The rising of aging and the declining of birth rates have forced the public to focus on the youth’s view on marriage.Based on critical discourse analysis and combined with Fairclough’s three-dimensional discourse an...The rising of aging and the declining of birth rates have forced the public to focus on the youth’s view on marriage.Based on critical discourse analysis and combined with Fairclough’s three-dimensional discourse analysis model,this paper builds a“Chinese media News Report Corpus on the topic of‘marriage’”whose news are collected from China Daily.It is found that the discourses are neutral and objective with regard to the advantages and disadvantages of marriage,but in general,it is still a traditional view of marriage that is inevitable and closely related to fertility.Although this is controlled by the policies and the social reasons including declining fertility rate,it deviates from the current view of the youth towards marriage,resulting in many serious consequences such as young people’s rejection.In addition,this research found that male and female have great differences in their views on marriage,and men’s resistance to marriage is far greater than that of women,which is departure from the public’s cognition.The reasons behind this need to be explored in order to solve the marriage and love problems of young people in today’s era and realize the healthy development of young marriage.展开更多
This study employs Norman Fairclough’s Critical Discourse Analysis(CDA)three-dimensional model,using the Republic of Kazakhstan as a case study,to delve into the discourse construction of China’s Belt and Road Initi...This study employs Norman Fairclough’s Critical Discourse Analysis(CDA)three-dimensional model,using the Republic of Kazakhstan as a case study,to delve into the discourse construction of China’s Belt and Road Initiative(BRI)in Central Asian countries.Through detailed analysis of policy documents,media reports,and public discussions in Central Asian countries,this paper reveals how the BRI constructs specific social practices,discourse events,and textual meanings within these nations.The findings indicate that through this global development strategy,China has not only strengthened its economic ties with Central Asian countries but has also exerted profound influences on political,cultural,and social levels.展开更多
The Critical Discourse Analysis(CDA)is an interdisciplinary tool in various conditions,which aims to provide a better understanding of sociocultural aspects of texts and accounts of the production of internal structur...The Critical Discourse Analysis(CDA)is an interdisciplinary tool in various conditions,which aims to provide a better understanding of sociocultural aspects of texts and accounts of the production of internal structure,and overall organization of texts as well as to provide a critical dimension in its theoretical and descriptive accounts of texts.Since June last year,HK protests or HK violence have been frequently reported by worldwide media.In this paper,the author aims to find out how the HK protesters and the Mainland media describe the same event based on the three-dimensional framework of CDA.At last,the author concludes that the mainland media generally describe the event as violence and riot while the HK protesters define themselves as warriors striving for more freedom,justice and democracy.Besides,on this event,the Mainland media mainly accuses some western countries of interference into HK affairs,which is undoubtedly of China’s internal affairs,and the media give full support to the HK police in safeguarding the peace and stability of Hong Kong.But from the perspective of HK protesters,they firmly believe that they are using their actions to protect all the people of HK,and they are defending their values such as freedom,democracy and justice.These are two totally different systems of language,and the author also gives its potential reasons in the paper so as to offer some viewpoints in this aspect in combination with the CDA theory.展开更多
Researches on discourse analysis have been broadly conducted from various perspectives in linguistics. Many of them focus on analyzing the discourse with respect to cohesion, coherence, and the co-operative principle....Researches on discourse analysis have been broadly conducted from various perspectives in linguistics. Many of them focus on analyzing the discourse with respect to cohesion, coherence, and the co-operative principle. This paper, however, attempts at the discourse coherence and the understanding of conversational implicature through the application of schema theory in doing discourse analysis.展开更多
A three-dimensional(3D)asymptotic theory is reformulated for the static analysis of simply-supported,isotropic and orthotropic single-layered nanoplates and graphene sheets(GSs),in which Eringen’s nonlocal elasticity...A three-dimensional(3D)asymptotic theory is reformulated for the static analysis of simply-supported,isotropic and orthotropic single-layered nanoplates and graphene sheets(GSs),in which Eringen’s nonlocal elasticity theory is used to capture the small length scale effect on the static behaviors of these.The perturbation method is used to expand the 3D nonlocal elasticity problems as a series of two-dimensional(2D)nonlocal plate problems,the governing equations of which for various order problems retain the same differential operators as those of the nonlocal classical plate theory(CST),although with different nonhomogeneous terms.Expanding the primary field variables of each order as the double Fourier series functions in the in-plane directions,we can obtain the Navier solutions of the leading-order problem,and the higher-order modifications can then be determined in a hierarchic and consistent manner.Some benchmark solutions for the static analysis of isotropic and orthotropic nanoplates and GSs subjected to sinusoidally and uniformly distributed loads are given to demonstrate the performance of the 3D nonlocal asymptotic theory.展开更多
Nowadays, the multimodal discourse analysis theory becomes increasingly important in the language teaching. This paper tries to elaborate the ways to apply the multimodal discourse analysis theory into College English...Nowadays, the multimodal discourse analysis theory becomes increasingly important in the language teaching. This paper tries to elaborate the ways to apply the multimodal discourse analysis theory into College English teaching after analyzing the status-quo of College English teaching on the basis of the theory and the significance of the application of multimodal discourse analysis theory in the College English teaching, hoping to contribute to the College English teaching reform.展开更多
Emotion Model is the basis of facial expression recognition system. The constructed emotional model should not only match facial expressions with emotions, but also reflect the location relationship between different ...Emotion Model is the basis of facial expression recognition system. The constructed emotional model should not only match facial expressions with emotions, but also reflect the location relationship between different emotions. In this way, it is easy to understand the current emotion of an individual through the analysis of the acquired facial expression information. This paper constructs an improved three-dimensional model for emotion based on fuzzy theory, which corresponds to the facial features to emotions based on the basic emotions proposed by Ekman. What’s more, the three-dimensional model for motion is able to divide every emotion into three different groups which can show the positional relationship visually and quantitatively and at the same time determine the degree of emotion based on fuzzy theory.展开更多
Discourse connectives can be dealt with in relevance-theoretic terms, as indicators of types of relevance. These connectives can be used to constrain the interpretation of an utterance. They are analyzed in a broad cl...Discourse connectives can be dealt with in relevance-theoretic terms, as indicators of types of relevance. These connectives can be used to constrain the interpretation of an utterance. They are analyzed in a broad classification outlined in discourse connectives which introduce contextual implications, which are concerned with strengthening and which introduce denials. A relevance based approach to discourse is a more adequate framework than a coherence based one for the analysis of discourse connectives.展开更多
The discourse construction of ideological and political education in colleges and universities is an important task to strengthen the leadership and discourse power of ideological work in colleges and universities.The...The discourse construction of ideological and political education in colleges and universities is an important task to strengthen the leadership and discourse power of ideological work in colleges and universities.The relevant theories of western multidisciplinary discourse research provide rich theoretical reference for the discourse construction of ideological and political education in colleges and universities.Based on linguistics,sociology,political science,philosophy and other disciplines,ideological and political education in colleges and universities should reasonably absorb its theoretical achievements on the sociality,power,democracy and authenticity of discourse,providing theoretical and practical references for the construction of ideological and political education discourse in colleges and universities in terms of content,power,expression and value.展开更多
Appraisal theory is developed based on Halliday's interpersonal system theory, and it has been applied to the discourseanalysis of different genres of texts, like commercial, historical, and autobiographical disco...Appraisal theory is developed based on Halliday's interpersonal system theory, and it has been applied to the discourseanalysis of different genres of texts, like commercial, historical, and autobiographical discourses. However, the use of appraisal the-ory in the analysis of political speech is rare. In this paper, appraisal theory is employed to analyze Ivanka Trump's speech with aquantitative analysis, aiming to reveal that how interpersonal meanings can be conveyed through language in political speech.展开更多
Discourse markers are a common discourse phenomenon that is now widely used in spoken and written language.For the study of discourse markers,all major schools have their own characteristics and advantages.The unique ...Discourse markers are a common discourse phenomenon that is now widely used in spoken and written language.For the study of discourse markers,all major schools have their own characteristics and advantages.The unique understanding of the cogni?tive characteristics and process of human communicative activities fully demonstrates the rationale for the existence of discourse markers.The pragmatic role of discourse markers in the process of discourse generation and discourse comprehension points out a new direction for the study of discourse markers.This paper draws on the relevant viewpoints of relevance theory and attempts to explore the discourse markers to illustrate that the unique interpretation of the discourse markers of relevance theory has broad ap?plication prospects.展开更多
It is based on multimodal discourse theory,with the help of a questionnaire survey,to study the multimodal choice of online courses and its dominant factors under the condition of virtual technology.It puts forward ta...It is based on multimodal discourse theory,with the help of a questionnaire survey,to study the multimodal choice of online courses and its dominant factors under the condition of virtual technology.It puts forward targeted implementation suggestions for online teaching and providings references for the rapid deployment and implementation of online teaching in domestic colleges and universities.展开更多
The China Society of Human Rights Studies and the Human Rights Research Center at Nankai University jointly hosted a seminar on"The 10th Anniversary of the Blue Book on Human Rights and the Chinese Human Rights C...The China Society of Human Rights Studies and the Human Rights Research Center at Nankai University jointly hosted a seminar on"The 10th Anniversary of the Blue Book on Human Rights and the Chinese Human Rights Concept,Discourse and Theory"on December 19th,2020.Experts at the meeting expressed their views and discussed the organization,style,and system of the Blue Book on Human Rights;the concept,expression,and dissemination of the Chinese human rights discourse;the paradigm,principle,and structure of the Chinese human rights theory;and the objectives,paths,and development of the Chinese human rights enterprise.展开更多
Discourse analysis has become more and more important in field of English Language Teaching.Based on the "moves" theory and the "problem-solution" rhetorical pattern,this paper aims to discuss diff...Discourse analysis has become more and more important in field of English Language Teaching.Based on the "moves" theory and the "problem-solution" rhetorical pattern,this paper aims to discuss different communicative purposes related to discourse analysis with reference to the discourse structures.Also the implication of exploiting this analysis for teaching purpose will be discussed.展开更多
Inspired by one of the maxims in a Chinese classics entitled The Roots of Wisdom,the present paper borrows the typical culturally-loaded Chinese discourses of Gu-qin — "stringed lute" and "non-stringed...Inspired by one of the maxims in a Chinese classics entitled The Roots of Wisdom,the present paper borrows the typical culturally-loaded Chinese discourses of Gu-qin — "stringed lute" and "non-stringed lute"—to add to the literary translation terminology and to enrich some Chinese literary translation theories.On the basis of analyzing some related theories in linguistics,pragmatics,aesthetics and communication which show different perspectives relevant with the study of translation,the present paper offers a new angle to illustrate how the Chinese discourses of Gu-qin,rich in cultural implications,can best describe translation and bring new vigor and vitality into the diversity and further expansion of the field of translation research.展开更多
This article aims to develop a head pursuit (HP) guidance law for three-dimensional hypervelocity interception, so that the effect of the perturbation induced by seeker detection can be reduced. On the basis of a no...This article aims to develop a head pursuit (HP) guidance law for three-dimensional hypervelocity interception, so that the effect of the perturbation induced by seeker detection can be reduced. On the basis of a novel HP three-dimensional guidance model, a nonlinear variable structure guidance law is presented by using Lyapunov stability theory. The guidance law positions the interceptor ahead of the target on its tlight trajectory, and the speed of the interceptor is required to be lower than that of the target, A numerical example of maneuvering ballistic target interception verifies the rightness of the guidance model and the effectiveness of the proposed method.展开更多
An analytical solution for the three-dimensional scattering and diffraction of plane P-waves by a hemispherical alluvial valley with saturated soil deposits is developed by employing Fourier-Bessel series expansion te...An analytical solution for the three-dimensional scattering and diffraction of plane P-waves by a hemispherical alluvial valley with saturated soil deposits is developed by employing Fourier-Bessel series expansion technique. Unlike previous studies, in which the saturated soil deposits were simulated with the single-phase elastic theory, in this paper, they are simulated with Biot's dynamic theory for saturated porous media, and the half space is assumed as a single-phase elastic medium. The effects of the dimensionless frequency, the incidence angle of P-wave and the porosity of soil deposits on the surface displacement magnifications of the hemispherical alluvial valley are investigated. Numerical results show that the existence of a saturated hemispherical alluvial valley has much influence on the surface displacement magnifications. It is more reasonable to simulate soil deposits with Biot's dynamic theory when evaluating the displacement responses of a hemispherical alluvial valley with an incidence of P-waves.展开更多
This paper proposes a based on 3D-VLE (three-dimensional nonlinear viscoelastic theory) three-parameters viscoelastic model for studying the time-dependent behaviour of concrete filled steel tube (CFT) columns. Th...This paper proposes a based on 3D-VLE (three-dimensional nonlinear viscoelastic theory) three-parameters viscoelastic model for studying the time-dependent behaviour of concrete filled steel tube (CFT) columns. The method of 3D-VLE was developed to analyze the effects of concrete creep behavior on CFT structures. After the evaluation of the parameters in the proposed creep model, experimental measurements of two prestressed reinforced concrete beams were used to investigate the creep phenomenon of three CFT columns under long-term axial and eccentric load was investigated. The experimentally obtained time-dependent creep behaviour accorded well with the cu~'es obtained from the proposed method. Many factors (such as ratio of long-term load to strength, slenderness ratio, steel ratio, and eccentricity ratio) were considered to obtain the regularity of influence of concrete creep on CFT structures. The analytical results can be consulted in the engineering practice and design.展开更多
Abstract An analytical solution to the three-dimen-sional scattering and diffraction of plane SV-waves by a saturated hemispherical alluvial valley in elastic half-space is obtained by using Fourier-Bessel series expa...Abstract An analytical solution to the three-dimen-sional scattering and diffraction of plane SV-waves by a saturated hemispherical alluvial valley in elastic half-space is obtained by using Fourier-Bessel series expan-sion technique. The hemispherical alluvial valley with saturated soil deposits is simulated with Biot's dynamic theory for saturated porous media. The following conclusions based on numerical results can be drawn: (1) there are a significant differences in the seismic response simulation between the previous single-phase models and the present two-phase model; (2) the nor-malized displacements on the free surface of the alluvial valley depend mainly on the incident wave angles, the dimensionless frequency of the incident SV waves and the porosity of sediments; (3) with the increase of the incident angle, the displacement distributions become more complicated; and the displacements on the free surface of the alluvial valley increase as the porosity of sediments increases.展开更多
文摘The rising of aging and the declining of birth rates have forced the public to focus on the youth’s view on marriage.Based on critical discourse analysis and combined with Fairclough’s three-dimensional discourse analysis model,this paper builds a“Chinese media News Report Corpus on the topic of‘marriage’”whose news are collected from China Daily.It is found that the discourses are neutral and objective with regard to the advantages and disadvantages of marriage,but in general,it is still a traditional view of marriage that is inevitable and closely related to fertility.Although this is controlled by the policies and the social reasons including declining fertility rate,it deviates from the current view of the youth towards marriage,resulting in many serious consequences such as young people’s rejection.In addition,this research found that male and female have great differences in their views on marriage,and men’s resistance to marriage is far greater than that of women,which is departure from the public’s cognition.The reasons behind this need to be explored in order to solve the marriage and love problems of young people in today’s era and realize the healthy development of young marriage.
基金supported by Teaching and Research Project of North China Institute of Aerospace Engineering(JY-2023-19)Humanities and Social Science Research Project of Hebei Education Department(SQ2024272).
文摘This study employs Norman Fairclough’s Critical Discourse Analysis(CDA)three-dimensional model,using the Republic of Kazakhstan as a case study,to delve into the discourse construction of China’s Belt and Road Initiative(BRI)in Central Asian countries.Through detailed analysis of policy documents,media reports,and public discussions in Central Asian countries,this paper reveals how the BRI constructs specific social practices,discourse events,and textual meanings within these nations.The findings indicate that through this global development strategy,China has not only strengthened its economic ties with Central Asian countries but has also exerted profound influences on political,cultural,and social levels.
文摘The Critical Discourse Analysis(CDA)is an interdisciplinary tool in various conditions,which aims to provide a better understanding of sociocultural aspects of texts and accounts of the production of internal structure,and overall organization of texts as well as to provide a critical dimension in its theoretical and descriptive accounts of texts.Since June last year,HK protests or HK violence have been frequently reported by worldwide media.In this paper,the author aims to find out how the HK protesters and the Mainland media describe the same event based on the three-dimensional framework of CDA.At last,the author concludes that the mainland media generally describe the event as violence and riot while the HK protesters define themselves as warriors striving for more freedom,justice and democracy.Besides,on this event,the Mainland media mainly accuses some western countries of interference into HK affairs,which is undoubtedly of China’s internal affairs,and the media give full support to the HK police in safeguarding the peace and stability of Hong Kong.But from the perspective of HK protesters,they firmly believe that they are using their actions to protect all the people of HK,and they are defending their values such as freedom,democracy and justice.These are two totally different systems of language,and the author also gives its potential reasons in the paper so as to offer some viewpoints in this aspect in combination with the CDA theory.
文摘Researches on discourse analysis have been broadly conducted from various perspectives in linguistics. Many of them focus on analyzing the discourse with respect to cohesion, coherence, and the co-operative principle. This paper, however, attempts at the discourse coherence and the understanding of conversational implicature through the application of schema theory in doing discourse analysis.
文摘A three-dimensional(3D)asymptotic theory is reformulated for the static analysis of simply-supported,isotropic and orthotropic single-layered nanoplates and graphene sheets(GSs),in which Eringen’s nonlocal elasticity theory is used to capture the small length scale effect on the static behaviors of these.The perturbation method is used to expand the 3D nonlocal elasticity problems as a series of two-dimensional(2D)nonlocal plate problems,the governing equations of which for various order problems retain the same differential operators as those of the nonlocal classical plate theory(CST),although with different nonhomogeneous terms.Expanding the primary field variables of each order as the double Fourier series functions in the in-plane directions,we can obtain the Navier solutions of the leading-order problem,and the higher-order modifications can then be determined in a hierarchic and consistent manner.Some benchmark solutions for the static analysis of isotropic and orthotropic nanoplates and GSs subjected to sinusoidally and uniformly distributed loads are given to demonstrate the performance of the 3D nonlocal asymptotic theory.
文摘Nowadays, the multimodal discourse analysis theory becomes increasingly important in the language teaching. This paper tries to elaborate the ways to apply the multimodal discourse analysis theory into College English teaching after analyzing the status-quo of College English teaching on the basis of the theory and the significance of the application of multimodal discourse analysis theory in the College English teaching, hoping to contribute to the College English teaching reform.
文摘Emotion Model is the basis of facial expression recognition system. The constructed emotional model should not only match facial expressions with emotions, but also reflect the location relationship between different emotions. In this way, it is easy to understand the current emotion of an individual through the analysis of the acquired facial expression information. This paper constructs an improved three-dimensional model for emotion based on fuzzy theory, which corresponds to the facial features to emotions based on the basic emotions proposed by Ekman. What’s more, the three-dimensional model for motion is able to divide every emotion into three different groups which can show the positional relationship visually and quantitatively and at the same time determine the degree of emotion based on fuzzy theory.
文摘Discourse connectives can be dealt with in relevance-theoretic terms, as indicators of types of relevance. These connectives can be used to constrain the interpretation of an utterance. They are analyzed in a broad classification outlined in discourse connectives which introduce contextual implications, which are concerned with strengthening and which introduce denials. A relevance based approach to discourse is a more adequate framework than a coherence based one for the analysis of discourse connectives.
基金This paper is the 2020 Key Research Base Project of Philosophy and Social Sciences of Shaanxi Provincial Education Department,“Educational Research on Strengthening College Students’Mainstream Ideological Identity under Cyberspace Governance”(No:20JZ068)the key research project of Xi’an University of Technology’s education and teaching reform,“Research and Practice of Curriculum Ideological and Political Teaching Reform under the Guidance of Party Building”(No.XJY1911).
文摘The discourse construction of ideological and political education in colleges and universities is an important task to strengthen the leadership and discourse power of ideological work in colleges and universities.The relevant theories of western multidisciplinary discourse research provide rich theoretical reference for the discourse construction of ideological and political education in colleges and universities.Based on linguistics,sociology,political science,philosophy and other disciplines,ideological and political education in colleges and universities should reasonably absorb its theoretical achievements on the sociality,power,democracy and authenticity of discourse,providing theoretical and practical references for the construction of ideological and political education discourse in colleges and universities in terms of content,power,expression and value.
文摘Appraisal theory is developed based on Halliday's interpersonal system theory, and it has been applied to the discourseanalysis of different genres of texts, like commercial, historical, and autobiographical discourses. However, the use of appraisal the-ory in the analysis of political speech is rare. In this paper, appraisal theory is employed to analyze Ivanka Trump's speech with aquantitative analysis, aiming to reveal that how interpersonal meanings can be conveyed through language in political speech.
文摘Discourse markers are a common discourse phenomenon that is now widely used in spoken and written language.For the study of discourse markers,all major schools have their own characteristics and advantages.The unique understanding of the cogni?tive characteristics and process of human communicative activities fully demonstrates the rationale for the existence of discourse markers.The pragmatic role of discourse markers in the process of discourse generation and discourse comprehension points out a new direction for the study of discourse markers.This paper draws on the relevant viewpoints of relevance theory and attempts to explore the discourse markers to illustrate that the unique interpretation of the discourse markers of relevance theory has broad ap?plication prospects.
文摘It is based on multimodal discourse theory,with the help of a questionnaire survey,to study the multimodal choice of online courses and its dominant factors under the condition of virtual technology.It puts forward targeted implementation suggestions for online teaching and providings references for the rapid deployment and implementation of online teaching in domestic colleges and universities.
文摘The China Society of Human Rights Studies and the Human Rights Research Center at Nankai University jointly hosted a seminar on"The 10th Anniversary of the Blue Book on Human Rights and the Chinese Human Rights Concept,Discourse and Theory"on December 19th,2020.Experts at the meeting expressed their views and discussed the organization,style,and system of the Blue Book on Human Rights;the concept,expression,and dissemination of the Chinese human rights discourse;the paradigm,principle,and structure of the Chinese human rights theory;and the objectives,paths,and development of the Chinese human rights enterprise.
文摘Discourse analysis has become more and more important in field of English Language Teaching.Based on the "moves" theory and the "problem-solution" rhetorical pattern,this paper aims to discuss different communicative purposes related to discourse analysis with reference to the discourse structures.Also the implication of exploiting this analysis for teaching purpose will be discussed.
文摘Inspired by one of the maxims in a Chinese classics entitled The Roots of Wisdom,the present paper borrows the typical culturally-loaded Chinese discourses of Gu-qin — "stringed lute" and "non-stringed lute"—to add to the literary translation terminology and to enrich some Chinese literary translation theories.On the basis of analyzing some related theories in linguistics,pragmatics,aesthetics and communication which show different perspectives relevant with the study of translation,the present paper offers a new angle to illustrate how the Chinese discourses of Gu-qin,rich in cultural implications,can best describe translation and bring new vigor and vitality into the diversity and further expansion of the field of translation research.
文摘This article aims to develop a head pursuit (HP) guidance law for three-dimensional hypervelocity interception, so that the effect of the perturbation induced by seeker detection can be reduced. On the basis of a novel HP three-dimensional guidance model, a nonlinear variable structure guidance law is presented by using Lyapunov stability theory. The guidance law positions the interceptor ahead of the target on its tlight trajectory, and the speed of the interceptor is required to be lower than that of the target, A numerical example of maneuvering ballistic target interception verifies the rightness of the guidance model and the effectiveness of the proposed method.
基金Project supported by the National Natural Science Foundation of China (No. 50478062) and Natural Science Foundation of Beijing (No. 8052015).
文摘An analytical solution for the three-dimensional scattering and diffraction of plane P-waves by a hemispherical alluvial valley with saturated soil deposits is developed by employing Fourier-Bessel series expansion technique. Unlike previous studies, in which the saturated soil deposits were simulated with the single-phase elastic theory, in this paper, they are simulated with Biot's dynamic theory for saturated porous media, and the half space is assumed as a single-phase elastic medium. The effects of the dimensionless frequency, the incidence angle of P-wave and the porosity of soil deposits on the surface displacement magnifications of the hemispherical alluvial valley are investigated. Numerical results show that the existence of a saturated hemispherical alluvial valley has much influence on the surface displacement magnifications. It is more reasonable to simulate soil deposits with Biot's dynamic theory when evaluating the displacement responses of a hemispherical alluvial valley with an incidence of P-waves.
文摘This paper proposes a based on 3D-VLE (three-dimensional nonlinear viscoelastic theory) three-parameters viscoelastic model for studying the time-dependent behaviour of concrete filled steel tube (CFT) columns. The method of 3D-VLE was developed to analyze the effects of concrete creep behavior on CFT structures. After the evaluation of the parameters in the proposed creep model, experimental measurements of two prestressed reinforced concrete beams were used to investigate the creep phenomenon of three CFT columns under long-term axial and eccentric load was investigated. The experimentally obtained time-dependent creep behaviour accorded well with the cu~'es obtained from the proposed method. Many factors (such as ratio of long-term load to strength, slenderness ratio, steel ratio, and eccentricity ratio) were considered to obtain the regularity of influence of concrete creep on CFT structures. The analytical results can be consulted in the engineering practice and design.
基金The project was supported by the National Natural Science Foundation of China (50478062 and 10532070)Open Fund at the Key Laboratory of Urban Security and Disaster Engineering (Beijing University of Technology)Chinese Ministry of Education.
文摘Abstract An analytical solution to the three-dimen-sional scattering and diffraction of plane SV-waves by a saturated hemispherical alluvial valley in elastic half-space is obtained by using Fourier-Bessel series expan-sion technique. The hemispherical alluvial valley with saturated soil deposits is simulated with Biot's dynamic theory for saturated porous media. The following conclusions based on numerical results can be drawn: (1) there are a significant differences in the seismic response simulation between the previous single-phase models and the present two-phase model; (2) the nor-malized displacements on the free surface of the alluvial valley depend mainly on the incident wave angles, the dimensionless frequency of the incident SV waves and the porosity of sediments; (3) with the increase of the incident angle, the displacement distributions become more complicated; and the displacements on the free surface of the alluvial valley increase as the porosity of sediments increases.