Quality traceability plays an essential role in assembling and welding offshore platform blocks.The improvement of the welding quality traceability system is conducive to improving the durability of the offshore platf...Quality traceability plays an essential role in assembling and welding offshore platform blocks.The improvement of the welding quality traceability system is conducive to improving the durability of the offshore platform and the process level of the offshore industry.Currently,qualitymanagement remains in the era of primary information,and there is a lack of effective tracking and recording of welding quality data.When welding defects are encountered,it is difficult to rapidly and accurately determine the root cause of the problem from various complexities and scattered quality data.In this paper,a composite welding quality traceability model for offshore platform block construction process is proposed,it contains the quality early-warning method based on long short-term memory and quality data backtracking query optimization algorithm.By fulfilling the training of the early-warning model and the implementation of the query optimization algorithm,the quality traceability model has the ability to assist enterprises in realizing the rapid identification and positioning of quality problems.Furthermore,the model and the quality traceability algorithm are checked by cases in actual working conditions.Verification analyses suggest that the proposed early-warningmodel for welding quality and the algorithmfor optimizing backtracking requests are effective and can be applied to the actual construction process.展开更多
In recent years,China has made significant progress in the construction of highways,resulting in an improved highway network that has provided robust support for economic and social development.However,the rapid expan...In recent years,China has made significant progress in the construction of highways,resulting in an improved highway network that has provided robust support for economic and social development.However,the rapid expansion of highway construction,power supply,and distribution has led to several challenges in mechanical and electrical engineering technology.Ensuring the safe,stable,and cost-effective operation of the power supply and distribution system to meet the diverse requirements of highway operations has become a pressing issue.This article takes an example of a highway electromechanical engineering power supply and distribution construction project to provide insight into the construction process of highway electromechanical engineering power supply and distribution technology.展开更多
The three-hinge precast arch culvert consists of two segmental precast units and three hinge points.It harnesses the passive resistance of an embankment by permitting deflection,resulting in a mechanically stable stru...The three-hinge precast arch culvert consists of two segmental precast units and three hinge points.It harnesses the passive resistance of an embankment by permitting deflection,resulting in a mechanically stable structure.However,the design of the three-hinge precast arch culvert differs from that of a conventional culvert,prompting the mechanical behavior of the culvert to become an important issue.In this study,therefore,1/5 scale model tests were conducted on a three-hinge precast arch culvert to measure the changes in the inside width and earth pressure acting on the culvert at each step in order to investigate the culvert’s mechanical behavior at each construction stage.Moreover,the deflection measurement of the culvert was obtained at the in-situ construction site.The results indicate that the arch members were displaced according to the embankment depth in a similar manner to the design load.Therefore,the horizontal earth pressure,which was larger than the earth pressure at rest,acted on the culvert at the end of its construction.展开更多
As Constructivist theory is applied into lexical processing in teaching of college English reading, understanding word meaning should be seen as a reconstruction rather than a transmission of knowledge. Teachers shoul...As Constructivist theory is applied into lexical processing in teaching of college English reading, understanding word meaning should be seen as a reconstruction rather than a transmission of knowledge. Teachers should set up linguistic environment where students as sociate what they are learning with previous experience, and accomplish the construction of meaning in collaborative circumstance.展开更多
Urbanization has led to the rapid development of the construction industry.However,this has also led to higher requirements for the construction engineering management.Other than the quality monitoring of engineering ...Urbanization has led to the rapid development of the construction industry.However,this has also led to higher requirements for the construction engineering management.Other than the quality monitoring of engineering construction,the energy-saving properties of the building should also be considered.Therefore,a scientific management approach should be adopted to improve green building management.This paper primarily examines the importance of quality management in green building construction,along with the factors influencing it.It also identifies the quality issues present in current green building construction.Finally,it proposes measures for quality management in the green building construction process to facilitate the industry’s healthy development.展开更多
At the end of August,Chinalco Southeast Coast Aluminum Deep Processing Base broke ground at the Fujian-Taiwan(Fuzhou)Industrial Park for Blue Economy.Based on Chilco Ruimin(an aluminum processing subsidiary of Chinalc...At the end of August,Chinalco Southeast Coast Aluminum Deep Processing Base broke ground at the Fujian-Taiwan(Fuzhou)Industrial Park for Blue Economy.Based on Chilco Ruimin(an aluminum processing subsidiary of Chinalco in Fujian Province)as the main body,Chinalco展开更多
This paper aims to study the different vertical displacements in tall hybrid-structures and the corresponding engineering measures.First,the method to calculate the different vertical displacements in tall hybrid-stru...This paper aims to study the different vertical displacements in tall hybrid-structures and the corresponding engineering measures.First,the method to calculate the different vertical displacements in tall hybrid-structures is presented.This method takes into account the effects of construction process by applying loads sequentially story by story.Based on the concrete creep and shrinkage calculation formula in American Concrete Institute(ACI)code,with the assumption that loads are increased linearly in members,the creep and shrinkage effects of members are analyzed by adopting two parameters named average load-aged-coefficient and average age-last coefficient.The effects of steel ratio on members creep are analyzed by age-adjusted module method(AEMM).The effects that core-tube were constructed in advance to outer steel frame were also considered.Then,based on the samplecalculation,the measures to effectively reduce the different vertical displacements in hybrid-structures are proposed.This method is simple and practical in the calculation of different vertical displacements in tall and super-tall hybrid-structures.展开更多
基金funded by Ministry of Industry and Information Technology of the People’s Republic of China[Grant No.2018473].
文摘Quality traceability plays an essential role in assembling and welding offshore platform blocks.The improvement of the welding quality traceability system is conducive to improving the durability of the offshore platform and the process level of the offshore industry.Currently,qualitymanagement remains in the era of primary information,and there is a lack of effective tracking and recording of welding quality data.When welding defects are encountered,it is difficult to rapidly and accurately determine the root cause of the problem from various complexities and scattered quality data.In this paper,a composite welding quality traceability model for offshore platform block construction process is proposed,it contains the quality early-warning method based on long short-term memory and quality data backtracking query optimization algorithm.By fulfilling the training of the early-warning model and the implementation of the query optimization algorithm,the quality traceability model has the ability to assist enterprises in realizing the rapid identification and positioning of quality problems.Furthermore,the model and the quality traceability algorithm are checked by cases in actual working conditions.Verification analyses suggest that the proposed early-warningmodel for welding quality and the algorithmfor optimizing backtracking requests are effective and can be applied to the actual construction process.
文摘In recent years,China has made significant progress in the construction of highways,resulting in an improved highway network that has provided robust support for economic and social development.However,the rapid expansion of highway construction,power supply,and distribution has led to several challenges in mechanical and electrical engineering technology.Ensuring the safe,stable,and cost-effective operation of the power supply and distribution system to meet the diverse requirements of highway operations has become a pressing issue.This article takes an example of a highway electromechanical engineering power supply and distribution construction project to provide insight into the construction process of highway electromechanical engineering power supply and distribution technology.
基金supported by the National Institute for Land and Infrastructure Management,MLIT,Japan(grant for the research and development of technologies for improving the quality of road policies,no.24-4,2012-2015).
文摘The three-hinge precast arch culvert consists of two segmental precast units and three hinge points.It harnesses the passive resistance of an embankment by permitting deflection,resulting in a mechanically stable structure.However,the design of the three-hinge precast arch culvert differs from that of a conventional culvert,prompting the mechanical behavior of the culvert to become an important issue.In this study,therefore,1/5 scale model tests were conducted on a three-hinge precast arch culvert to measure the changes in the inside width and earth pressure acting on the culvert at each step in order to investigate the culvert’s mechanical behavior at each construction stage.Moreover,the deflection measurement of the culvert was obtained at the in-situ construction site.The results indicate that the arch members were displaced according to the embankment depth in a similar manner to the design load.Therefore,the horizontal earth pressure,which was larger than the earth pressure at rest,acted on the culvert at the end of its construction.
文摘As Constructivist theory is applied into lexical processing in teaching of college English reading, understanding word meaning should be seen as a reconstruction rather than a transmission of knowledge. Teachers should set up linguistic environment where students as sociate what they are learning with previous experience, and accomplish the construction of meaning in collaborative circumstance.
文摘Urbanization has led to the rapid development of the construction industry.However,this has also led to higher requirements for the construction engineering management.Other than the quality monitoring of engineering construction,the energy-saving properties of the building should also be considered.Therefore,a scientific management approach should be adopted to improve green building management.This paper primarily examines the importance of quality management in green building construction,along with the factors influencing it.It also identifies the quality issues present in current green building construction.Finally,it proposes measures for quality management in the green building construction process to facilitate the industry’s healthy development.
文摘At the end of August,Chinalco Southeast Coast Aluminum Deep Processing Base broke ground at the Fujian-Taiwan(Fuzhou)Industrial Park for Blue Economy.Based on Chilco Ruimin(an aluminum processing subsidiary of Chinalco in Fujian Province)as the main body,Chinalco
文摘This paper aims to study the different vertical displacements in tall hybrid-structures and the corresponding engineering measures.First,the method to calculate the different vertical displacements in tall hybrid-structures is presented.This method takes into account the effects of construction process by applying loads sequentially story by story.Based on the concrete creep and shrinkage calculation formula in American Concrete Institute(ACI)code,with the assumption that loads are increased linearly in members,the creep and shrinkage effects of members are analyzed by adopting two parameters named average load-aged-coefficient and average age-last coefficient.The effects of steel ratio on members creep are analyzed by age-adjusted module method(AEMM).The effects that core-tube were constructed in advance to outer steel frame were also considered.Then,based on the samplecalculation,the measures to effectively reduce the different vertical displacements in hybrid-structures are proposed.This method is simple and practical in the calculation of different vertical displacements in tall and super-tall hybrid-structures.
