期刊文献+
共找到1,228篇文章
< 1 2 62 >
每页显示 20 50 100
Rebuilding the Ancestral Temple and Hosting Daluo Heaven and Earth Prayer and Enlightenment Ceremony
1
作者 Wu Hui-Chiao 《Cultural and Religious Studies》 2020年第7期386-402,共17页
Kuo,Yeh-Tzu founded Taiwan’s Sung Shan Tsu Huei Temple in 1970.She organized more than 200 worshipers as a group named“Taiwan Tsu Huei Temple Queen Mother of the West Delegation to China to Worship at the Ancestral ... Kuo,Yeh-Tzu founded Taiwan’s Sung Shan Tsu Huei Temple in 1970.She organized more than 200 worshipers as a group named“Taiwan Tsu Huei Temple Queen Mother of the West Delegation to China to Worship at the Ancestral Temples”in 1990.At that time,the temple building of the Queen Mother Palace in Huishan of Gansu Province was in disrepair,and Temple Master Kuo,Yeh-Tzu made a vow to rebuild it.Rebuilding the ancestral temple began in 1992 and was completed in 1994.It was the first case of a Taiwan temple financing the rebuilding of a far-away Queen Mother Palace with its own donations.In addition,Sung Shan Tsu Huei Temple celebrated its 45th anniversary and hosted Yiwei Yuanheng Lizhen Daluo Tiandi Qingjiao(Momentous and Fortuitous Heaven and Earth Prayer Ceremony)in 2015.This is the most important and the grandest blessing ceremony of Taoism,a rare event for Taoism locally and abroad during this century.Those sacred rituals were replete with unprecedented grand wishes to propagate the belief in Queen Mother of the West.Stopping at nothing,Queen Mother’s love never ceases. 展开更多
关键词 Sung Shan Tsu Huei Temple Temple Master Kuo Yeh-Tzu Golden Mother of the Jade Pond Daluo Tiandi Qingjiao(Daluo heaven and earth Prayer Ceremony)
下载PDF
Variations of the Earth's rotation rate and cyclic processes in geodynamics 被引量:1
2
作者 B.W. Levin E.V. Sasorova +3 位作者 G.M. Steblov A.V. Domanski A.S. Prytkov E.N. Tsyba 《Geodesy and Geodynamics》 2017年第3期206-212,共7页
The authors analyzed the relationship between variations of the Earth's rotation rate and the geodynamic processes within the Earth's body, including seismic activity, The rotation rate of a planet determines its un... The authors analyzed the relationship between variations of the Earth's rotation rate and the geodynamic processes within the Earth's body, including seismic activity, The rotation rate of a planet determines its uniaxial compression along the axis of rotation and the areas of various surface elements of the body. The Earth's ellipticity variations, caused naturally by the rotation rate variations, are manifested in vertical components of precise GPS measurements. Comparative analysis of these variations is considered in view of modern theoretical ideas concerning the Earth's figure. The results justify further research that is of interest for improvement of space svstems and technologiesi. 展开更多
关键词 earth's rotation rate earth's ellipticity Changes in the planet's figure Seismic activity Pulsations of the vertical components of GPS measurements
下载PDF
DOUBLE SUBSTITUTE CALIBRATION FOR THE ISOTOPIC RATIO MEASUREMENT AMONG RARE EARTH ELEMENTS
3
作者 Teing Lien CHANG (Department of Chemistry, Peking University, Beijing 100871)Dun Min ZHAO (Institute of Geology, Academy of Geological Sciences. Beijing 100037) 《Chinese Chemical Letters》 SCIE CAS CSCD 1996年第5期499-502,共4页
Abstract: Through the application of the method of double substitute calibration using the true isotopic ratios of cerium and europium of our laboratory standards, the atomic weight of ytterbium has been determined a... Abstract: Through the application of the method of double substitute calibration using the true isotopic ratios of cerium and europium of our laboratory standards, the atomic weight of ytterbium has been determined as Ac(Yb) 173. 0428(15) on Zσ basis. 展开更多
关键词 RATIO CALIBRATION DOUBLE earth ELEMENTS FOR ISOTOPIC measureMENT RARE AMONG
下载PDF
Effect of the Earth Movement on the Measured Moon Trajectory
4
作者 HUANG Yuke CUI Weicheng 《Journal of Philosophy Study》 2022年第12期641-680,共40页
All lunar theories within the framework of classical mechanics are based on the assumption of an inertial frame of reference,which is physically non-existent and has scarcely been examined in previous studies.This pap... All lunar theories within the framework of classical mechanics are based on the assumption of an inertial frame of reference,which is physically non-existent and has scarcely been examined in previous studies.This paper aims to examine the consequence of giving up the assumption of the existence of an inertial frame and the relevant influence on the measured moon trajectories.The general formulation of the lunar orbit is built from the perspective of the new general system theory(NGST),where the moon is modelled as a 6-DOF living body and active forces are introduced.This formulation can be retrograded to the framework of classical mechanics.Firstly,we calculate the active forces on the moon when a fixed earth movement and a fixed moon movement are assumed in the god-coordinate system.Then we investigate what will happen to the measured moon trajectory in the human-coordinate system when the earth movement and other parameters are perturbed in several cases.It is found that the results are sometimes inconsistent with the explanations using inertia forces in classical mechanics but can be well explained by NGST.We also discovered that the active forces on the moon should be adjusted constantly to maintain the stable measured moon trajectory. 展开更多
关键词 earth movement measured moon trajectory the new general system theory active force
下载PDF
Influence of the Earth's rotation on measurement of gravitational constant G with the time-of-swing method
5
作者 Jie Luo Tao Dong +2 位作者 Cheng-Gang Shao Yu-Jie Tan Hui-Jie Zhang 《Chinese Physics B》 SCIE EI CAS CSCD 2020年第2期137-141,共5页
In the measurement of the Newtonian gravitational constant G with the time-of-swing method,the influence of the Earth's rotation has been roughly estimated before,which is far beyond the current experimental preci... In the measurement of the Newtonian gravitational constant G with the time-of-swing method,the influence of the Earth's rotation has been roughly estimated before,which is far beyond the current experimental precision.Here,we present a more complete theoretical modeling and assessment process.To figure out this effect,we use the relativistic Lagrangian expression to derive the motion equations of the torsion pendulum.With the correlation method and typical parameters,we estimate that the influence of the Earth's rotation on G measurement is far less than 1 ppm,which may need to be considered in the future high-accuracy experiments of determining the gravitational constant G. 展开更多
关键词 the earth's ROTATION RELATIVISTIC LAGRANGIAN G measurement time-of-swing method
下载PDF
Process of source dynamics of the Jingtai earthquake (M=6. 2 ) 被引量:4
6
作者 杜学彬 闫志德 邹明武 《Acta Seismologica Sinica(English Edition)》 CSCD 1994年第3期379-388,共10页
In this paper, the process of source dynamics of the Jingtai earthquake (M= 6. 2) is studied on the basis of both earth resistivity changes before the event and the spatial directivity of single-observatory magnitude ... In this paper, the process of source dynamics of the Jingtai earthquake (M= 6. 2) is studied on the basis of both earth resistivity changes before the event and the spatial directivity of single-observatory magnitude measurements of the seismic network of China. The following conclusions are obtained: the NW-SE directional tension stress (or the one about in the direction) inside the source region was enhanced during the short period from three to five months before the event, and done still further about in twenty odd days before the event, so that it finally leads the fault in about the EW strike to produce dislocation in NWW-SEE direction. Finally, this dislocation pattern caused the strong ground vibration to be received at the seismic observatories which were located in the NWW and SEE directions of the epicenter, while the weak vibration to be received at the ones in NE and south directions of the epicenter. At last, understandings on the imminent earthquake prediction through earth resistivity method are set forth. 展开更多
关键词 earth resistivity magnitude measurement active fault
下载PDF
Microtremor-based analysis of the dynamic response characteristics of earth-fissured sites in the Datong basin, China 被引量:3
7
作者 Xuan You Deng Yahong +3 位作者 He Jia Chang Jiang Yan Zuofei Wu Wei 《Earthquake Engineering and Engineering Vibration》 SCIE EI CSCD 2021年第3期567-582,共16页
This study conducted microtremor testing along six survey lines that cross three typical earth fissures in the Datong basin to determine the dynamic response characteristics of earth fissure sites with regard to the F... This study conducted microtremor testing along six survey lines that cross three typical earth fissures in the Datong basin to determine the dynamic response characteristics of earth fissure sites with regard to the Fourier amplitude spectrum,response spectrum,and Arias intensity.The results show the following.(1)The predominant frequency of an earth fissure site is mainly affected by the thickness and the shear wave velocity of the soil layer and is minimally effected by the presence of an earth fissure.(2)Earth fissures have a pronounced amplification effect on dynamic response.Fourier amplitude,response acceleration,and Arias intensity are high near an earth fissure and decrease with an increase in distance from the earth fissure,tending toward stability at a distance of 20 m.(3)The area that is seriously affected by this amplification is within 6-8 m of an earth fissure,and the general affected area is farther out than this,to a distance of 25 m.(4)New construction should be avoided in an area affected by the amplification,and existing buildings in general and seriously affected areas need to be reinforced to increase their seismic fortification intensity. 展开更多
关键词 earth fissures microtremor testing predominant frequency amplification effect affected area mitigation measures
下载PDF
Numerical simulation of the sensor output on Macao Science Satellite-1
8
作者 XiZhi Li LiGang Li +4 位作者 Kai Tang YaBing Wang JianXia Cheng Qing Yan Zhong Huang 《Earth and Planetary Physics》 EI CSCD 2023年第1期136-143,共8页
Macao Science Satellite-1(MSS-1)will be launched at the early of 2023 into a near-circular orbit.The mission is designed to measure the Earth’s geomagnetic field with unpreceded accuracy through a new perspective.The... Macao Science Satellite-1(MSS-1)will be launched at the early of 2023 into a near-circular orbit.The mission is designed to measure the Earth’s geomagnetic field with unpreceded accuracy through a new perspective.The most important component installed on the satellite,to ensure high accuracy,is the deployable boom(Optical Bench).A Vector Field Magnetometer(VFM),an Advanced Stellar Compass(ASC),and a Couple Dark State Magnetometers(CDSM)are deployed on the deployable boom.In order to maximize the mission’s scientific output,a numerical simulator on MSS-1’s deployable boom was required to evaluate the adaptability of all devices on the deployable boom and assist the satellite’s data pre-processing.This paper first briefly describes the synthesis of the Earth’s total magnetic field and then describes the method simulating the output of scalar and vector magnetometers.Finally,the calibration method is applied to the synthetic magnetometer data to analyze the possible noise/error of the relevant instruments.Our results show that the simulator can imitate the disturbance of different noise sources or errors in the measuring system,and is especially useful for the satellite’s data processing group. 展开更多
关键词 synthesize earth’s magnetic field simulate satellite orbit numerical simulation of satellite’s measurement system
下载PDF
Comparison of TMI and AMSR-E sea surface temperatures with Argo near-surface temperatures over the global oceans 被引量:1
9
作者 CHEN Xingrong LIU Zenghong +1 位作者 SUN Chaohui WANG Haiyan 《Acta Oceanologica Sinica》 SCIE CAS CSCD 2017年第3期52-59,共8页
Satellite-derived sea surface temperatures(SSTs) from the tropical rainfall measuring mission(TRMM)microwave imager(TMI) and the advanced microwave scanning radiometer for the earth observing system(AMSR-E) we... Satellite-derived sea surface temperatures(SSTs) from the tropical rainfall measuring mission(TRMM)microwave imager(TMI) and the advanced microwave scanning radiometer for the earth observing system(AMSR-E) were compared with non-pumped near-surface temperatures(NSTs) obtained from Argo profiling floats over the global oceans. Factors that might cause temperature differences were examined, including wind speed, columnar water vapor, liquid cloud water, and geographic location. The results show that both TMI and AMSR-E SSTs are highly correlated with the Argo NSTs; however, at low wind speeds, they are on average warmer than the Argo NSTs. The TMI performs slightly better than the AMSR-E at low wind speeds, whereas the TMI SST retrievals might be poorly calibrated at high wind speeds. The temperature differences indicate a warm bias of the TMI/AMSR-E when columnar water vapor is low, which can indicate that neither TMI nor AMSR-E SSTs are well calibrated at high latitudes. The SST in the Kuroshio Extension region has higher variability than in the Kuroshio region. The variability of the temperature difference between the satellite-retrieved SSTs and the Argo NSTs is lower in the Kuroshio Extension during spring. At low wind speeds, neither TMI nor AMSR-E SSTs are well calibrated, although the TMI performs better than the AMSR-E. 展开更多
关键词 Argo near-surface temperature tropical rainfall measuring mission(TRMM) microwave imager advanced microwave scanning radiometer for the earth observing system sea surface temperature
下载PDF
莎剧《安东尼与克莉奥佩特拉》中“New Heaven,New Earth”对圣经典故的借用及汉译
10
作者 赵艾东 《圣经文学研究》 2023年第1期150-179,共30页
莎士比亚的文学作品对圣经语言和内容有大量借用和模仿;其中,悲剧《安东尼与克莉奥佩特拉》中的“new heaven,new earth”就与《启示录》中的“新天新地”存在互文关系。译者和读者若对圣经缺乏充分的了解,或是圣经文化圈外的“他者”,... 莎士比亚的文学作品对圣经语言和内容有大量借用和模仿;其中,悲剧《安东尼与克莉奥佩特拉》中的“new heaven,new earth”就与《启示录》中的“新天新地”存在互文关系。译者和读者若对圣经缺乏充分的了解,或是圣经文化圈外的“他者”,在汉译中就易发生问题。本文对圣经的天地观及其“新天新地”、其与《安东尼与克莉奥佩特拉》“新天新地”存在的三种互文关系以及剧中该典故的汉译等问题进行探讨,提出要想准确地理解和翻译西方经典,必须顾及文本产生的文化语境。 展开更多
关键词 新天新地 圣经 莎士比亚 《安东尼与克莉奥佩特拉》 互文性
下载PDF
Field Measurements and Pullout Tests of Reinforced Earth Retaining Wall
11
作者 陈群 何昌荣 朱分清 《Journal of Southwest Jiaotong University(English Edition)》 2004年第2期165-172,共8页
In this paper, field measurements and pullout tests of a new type of reinforced earth retaining wall, which is reinforced by trapezoid concrete blocks connected by steel bar, are described. Field measurements included... In this paper, field measurements and pullout tests of a new type of reinforced earth retaining wall, which is reinforced by trapezoid concrete blocks connected by steel bar, are described. Field measurements included settlements of the earth fill, tensile forces in the ties and earth pressures on the facing panels during the construction and at completion. Based on the measurements, the following statements can be made: (1) the tensile forces in the ties increased with the height of backfill above the tie and there is a tensile force crest in most ties; (2) at completion, the measured earth pressures along the wall face were between the values of the active earth pressures and the pressures at rest; (3) larger settlements occurred near the face of the wall where a zone of drainage sand and gravel was not compacted properly and smaller settlements occurred in the well-compacted backfill. The results of field pullout tests indicated that the magnitudes of pullout resistances as well as tensile forces induced in the ties were strongly influenced by the relative displacements between the ties and the backfill, and pullout resistances increased with the height of backfill above the ties and the length of ties. 展开更多
关键词 Reinforced earth retaining wall Field measurement Pullout test
下载PDF
Physical and Chemical Properties of GdN: A Critical Comparison between Single Crystals and Thin Films, Theory and Experiment
12
作者 Peter Wachter 《Advances in Materials Physics and Chemistry》 2016年第3期28-46,共19页
Since about 10 years, there is a controversy about physics and chemistry of GdN between stoichiometric (tested) large single crystals and off-stoichiometric thin films. GdN single crystals are anti-ferromagnetic for a... Since about 10 years, there is a controversy about physics and chemistry of GdN between stoichiometric (tested) large single crystals and off-stoichiometric thin films. GdN single crystals are anti-ferromagnetic for applied magnetic fields of only 10 Oe, become ferromagnetic for excess electrons and larger magnetic fields. They are semimetallic. Thin films are ferromagnetic and semiconductors. Over the time, many experiments have been performed on both systems and the physics in each system is consistent. Band structure computations either yield ferromagnetic semimetals or ferromagnetic semiconducting thin films. There seems to be two incompatible worlds, those of single crystals and those of thin films. In the present work, the author compares directly the various measurements and calculations and gives reasons for their different results. 展开更多
关键词 Rare earth Nitrides Preparation Methods Magnetic Electrical and Optical measurements on Single Crystals and Thin Films
下载PDF
Composite Scattering from the Electrically Very Large Ship-Sea Model Using the Hybrid High-Frequency Method 被引量:1
13
作者 罗伟 张民 +1 位作者 周平 殷红成 《Chinese Physics Letters》 SCIE CAS CSCD 2009年第11期63-65,共3页
A hybrid high-frequency method is proposed to analyze the bistatic electromagnetic scattering of the ship target on a very large two-dimensional randomly rough sea surface. The scattering of the ship-sea model is eva... A hybrid high-frequency method is proposed to analyze the bistatic electromagnetic scattering of the ship target on a very large two-dimensional randomly rough sea surface. The scattering of the ship-sea model is evaluated with the method of equivalent currents (MEC). The iterative physical optics method (IPO) is utilized to study the electromagnetic coupling effect caused by the hull and rough surface. The shadowing correction based on the Z-Buffer technology is introduced to eliminate the effects of the irrelevant scattering resources. The validity of the hybrid method is confirmed by the SAR simulation results and the scattering property of the ship-sea model is discussed. 展开更多
关键词 Instrumentation and measurement Optics quantum optics and lasers Environmental and earth science
下载PDF
Is the kinematics of special relativity incomplete? 被引量:1
14
作者 Ernst Karl Kunst 《Natural Science》 2014年第4期226-247,共22页
A thorough analysis of composite inertial motion (relativistic sum) within the framework of special relativity leads to the conclusion that every translational motion must be the symmetrically composite relativistic s... A thorough analysis of composite inertial motion (relativistic sum) within the framework of special relativity leads to the conclusion that every translational motion must be the symmetrically composite relativistic sum of a finite number of quanta of velocity. It is shown that the resulting spacetime geometry is Gaussian and the four-vector calculus to have its roots in the complex-number algebra. Furthermore, this results in superluminality of signals travelling at or nearly at the canonical velocity of light between rest frames even if resting to each other. 展开更多
关键词 Special Relativity Quantization of Velocity Absolute Rest Frame Symmetric Minkowsky-Space Duality of Inertial Motion in Dependence on Two-Way or One-Way measurement Accelerated Propagation in the Galaxy and Beyond Variable Rest Time on earth Rise of Interaction-Radii and Total Cross Sections in High Energy Collision Events
下载PDF
秦汉畤祭遗址出土玉人功用研究
15
作者 高崇文 《考古与文物》 CSSCI 北大核心 2024年第9期74-80,共7页
目前发现秦汉畤祭遗址的祭祀坑内,多是男女玉人一对与玉琮组合,应是畤祭礼仪最主要的祭祀形式。文章认为玉琮象征天圆地方,是祭天礼地的祭器。周秦汉时期奉行“以天为父,以地为母”之信仰,男女玉人与琮组合用于祭祀,正符合天为阳,地为阴... 目前发现秦汉畤祭遗址的祭祀坑内,多是男女玉人一对与玉琮组合,应是畤祭礼仪最主要的祭祀形式。文章认为玉琮象征天圆地方,是祭天礼地的祭器。周秦汉时期奉行“以天为父,以地为母”之信仰,男女玉人与琮组合用于祭祀,正符合天为阳,地为阴,以天为父,以地为母的认知。并由此推断,男女玉人应分别是受祭的天神和地神之神主,用驷马车载之前往雍地进行畤祭之礼。西汉畤祭仍然继续沿用秦故礼仪,此正是由春秋至西汉数百年间,畤祭所用男女玉人造型及功用基本相同的缘由所在。 展开更多
关键词 秦汉畤祭 天圆地方 祭天礼地 男女玉人 天地神主
下载PDF
天圆地方时空观及其“取象”逻辑
16
作者 李川 《中原文化研究》 2024年第5期72-78,共7页
立象为中国古代典籍的重要词语之一。“象”是天人相参、王道政治的核心观念,六经皆可包括于象之中。不惟如此,我国战国时期的文学深于比兴,盖因其深于取象之故。由此说来,取象观实乃华夏文化的根本思维方式。“天圆地方”是人类历史上... 立象为中国古代典籍的重要词语之一。“象”是天人相参、王道政治的核心观念,六经皆可包括于象之中。不惟如此,我国战国时期的文学深于比兴,盖因其深于取象之故。由此说来,取象观实乃华夏文化的根本思维方式。“天圆地方”是人类历史上最早出现的宇宙观之一,是我国古代关于天地形状的一种认识,是中国古人宇宙论的基本观念。天圆地方观念以及其附属的四象二十八宿、分野观等乃是其取象观选择的必然结果。基于取象观发展出来的,是华夏先民独特的时空观,这套时空观又影响了华夏民族的生活方式,从而使其看待万物的眼光与现代科学时空观有所不同。 展开更多
关键词 天圆地方 取象 时空
下载PDF
作为编辑的作家徐訏与他的《天地人》
17
作者 李婷 《邵阳学院学报(社会科学版)》 2024年第2期110-116,共7页
徐訏曾被学界视为一位极富浪漫抒情笔调、雅俗共赏的后期浪漫派作家。通过对徐訏整个文学生涯的梳理,可以发现,徐訏在不断进行文学创作的同时,还曾担任多个刊物的编辑。特别是他独立创刊的第一个刊物《天地人》,其“比较少年”的办刊宗... 徐訏曾被学界视为一位极富浪漫抒情笔调、雅俗共赏的后期浪漫派作家。通过对徐訏整个文学生涯的梳理,可以发现,徐訏在不断进行文学创作的同时,还曾担任多个刊物的编辑。特别是他独立创刊的第一个刊物《天地人》,其“比较少年”的办刊宗旨,兼具“导演”“厨子”和“商人”角色的编辑定位,奉读者为“刊物真正主人”的接受预设,以及放眼世界、关注民心的编辑格局与情怀,渗透与实践着徐訏自己独特的编辑理念与文学理想,区别于论语派刊物的幽默、闲适格调。 展开更多
关键词 徐訏 编辑 《天地人》
下载PDF
宜宾真武山道教空间形态的“象天法地”意匠论析
18
作者 尤川宝 《宜宾学院学报》 2024年第8期87-92,共6页
宜宾真武山道教为川南道教圣地,在文化传承、王权统治和道教信仰的综合驱动下,其营建秉承“象天法地”的规划思想,构建出宜宾真武山道教空间形态和人文内涵之间的意象关联。宜宾真武山道教的山水形态、山林形貌、建筑布局均具有特定的... 宜宾真武山道教为川南道教圣地,在文化传承、王权统治和道教信仰的综合驱动下,其营建秉承“象天法地”的规划思想,构建出宜宾真武山道教空间形态和人文内涵之间的意象关联。宜宾真武山道教的山水形态、山林形貌、建筑布局均具有特定的物质表达和场所隐喻,并蕴含“象天法地”意匠,即“与天同构”的空间意象和“天人合一”的文化精神。 展开更多
关键词 宜宾真武山道教 空间形态 象天法地
下载PDF
宋代理学美学的生态审美境界论
19
作者 卢政 江珊 《温州大学学报(社会科学版)》 2024年第1期13-21,共9页
宋代理学家以一种带有生态意义的审美终极关怀去观照自然、社会和人生,构建了体系完备的生态审美境界论。宋代理学美学的生态审美境界论由“孔颜乐处”观、“曾点之乐”观、“圣贤气象”观组成,三者相辅相成,其实质是一种追求万物一体... 宋代理学家以一种带有生态意义的审美终极关怀去观照自然、社会和人生,构建了体系完备的生态审美境界论。宋代理学美学的生态审美境界论由“孔颜乐处”观、“曾点之乐”观、“圣贤气象”观组成,三者相辅相成,其实质是一种追求万物一体、人生圆融、社会和谐的天地境界,标志着中国古代美学达到了一个新的发展水平。 展开更多
关键词 宋代 理学美学 生态审美境界 天地大美 人生圆融 社会和谐
下载PDF
双层地下连续墙土压力的现场实测研究
20
作者 陕耀 董雅丞 +1 位作者 张旭辉 姚西平 《岩土力学》 EI CAS CSCD 北大核心 2024年第S01期507-516,共10页
南京某超深基坑工程采用异形围护结构双层地下连续墙进行施工,双墙间土体处于非极限平衡状态,土压力分布演变形式及墙土间相互作用机制并不明确。为探明深基坑开挖施工引起的双墙间有限土体的土压力变化规律及墙外侧土拱效应对土压力分... 南京某超深基坑工程采用异形围护结构双层地下连续墙进行施工,双墙间土体处于非极限平衡状态,土压力分布演变形式及墙土间相互作用机制并不明确。为探明深基坑开挖施工引起的双墙间有限土体的土压力变化规律及墙外侧土拱效应对土压力分布的影响,采用现场实测分析结合物理模型计算的方法开展研究。首先,通过现场试验在土层中布设土压力监测点,获取基坑开挖过程中墙间土压力演变规律;其后,建立考虑土体分层的曲面锥形土拱模型,计算侧土拱发展引起的墙外土压力变化量,并结合试验数据的参数反演和误差分析对模型计算结果的准确性展开讨论。研究结果表明:基坑开挖施工对双墙间土体的影响总体呈现为挤压变形,有限土体受到的侧向约束作用有助于进一步发挥土体的抗剪强度;基坑开挖各工序中土方开挖过程对地层扰动最为显著;侧土拱效应进一步增大了浅层土体挡土墙侧土压力,而中深层土体中几乎没有侧土拱发展;考虑侧土拱效应的土压力计算结果较传统水土分算的Coulomb理论计算方法与现场实测结果更加吻合。本研究可为异型围护结构的深基坑工程设计及施工提供思路与建议。 展开更多
关键词 地下连续墙 土压力 现场实测 侧土拱效应 对比分析
下载PDF
上一页 1 2 62 下一页 到第
使用帮助 返回顶部