Pub Date : 2011-04-22DOI: 10.1109/ICETCE.2011.5776149
Mingfu Lu, Yi-long Bai
In this paper, the biaxial loading experiment for concrete is performed. The boundary displacements of the specimen in two directions, as the governing variables, maintain certain ratios. Two failure modes are found, catastrophic rupture and gradual failure. The biaxial loads drop simultaneously in catastrophic rupture. And the fluctuation value of deformation rise rapidly before the catastrophic rupture occurs. This reveals a sign of localization under biaxial loading.
{"title":"Experimental research on the deformation and failure of concrete under biaxial loading","authors":"Mingfu Lu, Yi-long Bai","doi":"10.1109/ICETCE.2011.5776149","DOIUrl":"https://doi.org/10.1109/ICETCE.2011.5776149","url":null,"abstract":"In this paper, the biaxial loading experiment for concrete is performed. The boundary displacements of the specimen in two directions, as the governing variables, maintain certain ratios. Two failure modes are found, catastrophic rupture and gradual failure. The biaxial loads drop simultaneously in catastrophic rupture. And the fluctuation value of deformation rise rapidly before the catastrophic rupture occurs. This reveals a sign of localization under biaxial loading.","PeriodicalId":6340,"journal":{"name":"2011 International Conference on Electric Technology and Civil Engineering (ICETCE)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78218591","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2011-04-22DOI: 10.1109/ICETCE.2011.5774247
Liu Xinxin, Liu Xiaomei, Jin Hong, Xu Xinlian
Glass curtain wall atrium can provide the building with good lighting and sight-seeing, but since thermal property of glass is unstable, interior environment usually alters with the climate, air condition system is required to reach the comfortable level of body. Hangzhou is taken as a typical example in subtropical monsoon climate region to certificate the limitation of glass atrium use in the south of China. Zhejiang University is taken as the study case, through on spot research and computer simulation, adaptable alteration methods in shading, ventilation, heat insulation, cooling are used on traditional glass curtain wall atrium. Results were stimulated by professional software to improve the interior physical environment to the comfortable level. Complex design including technology and art, correspondence strategies should use in the space which has geographic limitation to break the restraint.
{"title":"Adaptable alteration design in geographic limited space","authors":"Liu Xinxin, Liu Xiaomei, Jin Hong, Xu Xinlian","doi":"10.1109/ICETCE.2011.5774247","DOIUrl":"https://doi.org/10.1109/ICETCE.2011.5774247","url":null,"abstract":"Glass curtain wall atrium can provide the building with good lighting and sight-seeing, but since thermal property of glass is unstable, interior environment usually alters with the climate, air condition system is required to reach the comfortable level of body. Hangzhou is taken as a typical example in subtropical monsoon climate region to certificate the limitation of glass atrium use in the south of China. Zhejiang University is taken as the study case, through on spot research and computer simulation, adaptable alteration methods in shading, ventilation, heat insulation, cooling are used on traditional glass curtain wall atrium. Results were stimulated by professional software to improve the interior physical environment to the comfortable level. Complex design including technology and art, correspondence strategies should use in the space which has geographic limitation to break the restraint.","PeriodicalId":6340,"journal":{"name":"2011 International Conference on Electric Technology and Civil Engineering (ICETCE)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74977010","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2011-04-22DOI: 10.1109/ICETCE.2011.5774225
Duan Jian-hua, Song Wei-dong, Cong En-wei, Pan Tong-bin
Close-vertical underpass existing subway is the hardest condition during civil subway construction. Taking Beijing Metro Line 10 vertical Underpass Metro line 1 as the project background, the paper focus on the interacting of the new building and existing tunnel during the whole construction process. Adopting Ansys and Flac-3d to build large-scale mathematical and physical artificial models, by the analysis of the new building and existing tunnel deformation and stress alteration we got the Mechanical Characteristic of the new and existing subway tunnel. The research indicates that the main affect range of the new tunnel construction to the old tunnel is mainly in double excavation scope (6m). The main characterizations of the existing tunnel include the liner stress decreased, incline and recover. The existing of metro line 1 takes block conductive effect to surrounding rock stress and deformation caused by excavation.
{"title":"Analysis on interacting of close-vertical underpass existing subway during construction","authors":"Duan Jian-hua, Song Wei-dong, Cong En-wei, Pan Tong-bin","doi":"10.1109/ICETCE.2011.5774225","DOIUrl":"https://doi.org/10.1109/ICETCE.2011.5774225","url":null,"abstract":"Close-vertical underpass existing subway is the hardest condition during civil subway construction. Taking Beijing Metro Line 10 vertical Underpass Metro line 1 as the project background, the paper focus on the interacting of the new building and existing tunnel during the whole construction process. Adopting Ansys and Flac-3d to build large-scale mathematical and physical artificial models, by the analysis of the new building and existing tunnel deformation and stress alteration we got the Mechanical Characteristic of the new and existing subway tunnel. The research indicates that the main affect range of the new tunnel construction to the old tunnel is mainly in double excavation scope (6m). The main characterizations of the existing tunnel include the liner stress decreased, incline and recover. The existing of metro line 1 takes block conductive effect to surrounding rock stress and deformation caused by excavation.","PeriodicalId":6340,"journal":{"name":"2011 International Conference on Electric Technology and Civil Engineering (ICETCE)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76491866","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2011-04-22DOI: 10.1109/ICETCE.2011.5774205
Xi Yang, R. Klette
Vision-based driver assistance requires basic vision modules for stereo analysis or optic flow calculation. Driving situations change frequently, and methods need to be evaluated in the real world. The paper proposes ways for evaluating optic flow techniques by using estimated geometries for surrounding buildings or ‘road furniture’. It demonstrates the value of such an evaluation by discussing four different optic flow techniques.
{"title":"Approximate ground truth in the real world for testing optical flow algorithms","authors":"Xi Yang, R. Klette","doi":"10.1109/ICETCE.2011.5774205","DOIUrl":"https://doi.org/10.1109/ICETCE.2011.5774205","url":null,"abstract":"Vision-based driver assistance requires basic vision modules for stereo analysis or optic flow calculation. Driving situations change frequently, and methods need to be evaluated in the real world. The paper proposes ways for evaluating optic flow techniques by using estimated geometries for surrounding buildings or ‘road furniture’. It demonstrates the value of such an evaluation by discussing four different optic flow techniques.","PeriodicalId":6340,"journal":{"name":"2011 International Conference on Electric Technology and Civil Engineering (ICETCE)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77558976","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2011-04-22DOI: 10.1109/ICETCE.2011.5775261
L. Lihua, Zhangchao Li, Li Jiuyang
By means of a software package ANSYS10.0 of finite element analysis, this paper studies the influences of steel reinforced ratio, wallboard thickness and bidirectional cross mode of wire-mesh frame on mechanical properties of wire-mesh frame wallboard. It provides a basis for development and commercial applications of the new type structure and insulation wall cladding with energy saving.
{"title":"Finite element analysis on mechanical properties of new energy saving wire-mesh frame wallboard under horizontal load","authors":"L. Lihua, Zhangchao Li, Li Jiuyang","doi":"10.1109/ICETCE.2011.5775261","DOIUrl":"https://doi.org/10.1109/ICETCE.2011.5775261","url":null,"abstract":"By means of a software package ANSYS10.0 of finite element analysis, this paper studies the influences of steel reinforced ratio, wallboard thickness and bidirectional cross mode of wire-mesh frame on mechanical properties of wire-mesh frame wallboard. It provides a basis for development and commercial applications of the new type structure and insulation wall cladding with energy saving.","PeriodicalId":6340,"journal":{"name":"2011 International Conference on Electric Technology and Civil Engineering (ICETCE)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77681774","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2011-04-22DOI: 10.1109/ICETCE.2011.5774679
Q. Cheng, Wen-lin Wang
The effects of the inhibition activity of chitosan on the bacteria isolated from drinking water were studied. The bacteriostasis circle sizes of chitosan were observed, and the inhibitory effects with different concentration of chitosan (0.1, 0.2, 0.5 mg/l) and different cell concentration were also studied respectively. The results showed that chitosan could inhibit the growth of the bacteria isolated, and the ability was directly proportional to its concentrations. Though the bactericidal effect of chitosan with 0.2 mg/l concentration was after that of 0.5 mg/l, and longer settling time was needed, the turbidity was lower for the full flocculation of the residual bacteria. 0.2 mg/l concentration of chitosan could completely inhibit the growth of bacillus with low concentration; the holding time was extended with higher concentration of bacterial suspension and the same effect was also achieved. The actual use of chitosan as a disinfectant agent should be based on the bacterial contamination of water; tests were needed to find the optimal concentration of chitosan; and the flocculation time should be adjusted to achieve satisfactory results.
{"title":"Studies on inhibition activity of chitosan against bacteria from drinking water","authors":"Q. Cheng, Wen-lin Wang","doi":"10.1109/ICETCE.2011.5774679","DOIUrl":"https://doi.org/10.1109/ICETCE.2011.5774679","url":null,"abstract":"The effects of the inhibition activity of chitosan on the bacteria isolated from drinking water were studied. The bacteriostasis circle sizes of chitosan were observed, and the inhibitory effects with different concentration of chitosan (0.1, 0.2, 0.5 mg/l) and different cell concentration were also studied respectively. The results showed that chitosan could inhibit the growth of the bacteria isolated, and the ability was directly proportional to its concentrations. Though the bactericidal effect of chitosan with 0.2 mg/l concentration was after that of 0.5 mg/l, and longer settling time was needed, the turbidity was lower for the full flocculation of the residual bacteria. 0.2 mg/l concentration of chitosan could completely inhibit the growth of bacillus with low concentration; the holding time was extended with higher concentration of bacterial suspension and the same effect was also achieved. The actual use of chitosan as a disinfectant agent should be based on the bacterial contamination of water; tests were needed to find the optimal concentration of chitosan; and the flocculation time should be adjusted to achieve satisfactory results.","PeriodicalId":6340,"journal":{"name":"2011 International Conference on Electric Technology and Civil Engineering (ICETCE)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77684664","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2011-04-22DOI: 10.1109/ICETCE.2011.5775344
Haiyan Zhang, Xiaomei Chen, Zhi Luo
In the steel reinforced concrete members, since the main reinforcement in beams may pass through the steel web and flange of the steel reinforced concrete columns, perforation in the section steel can't be avoided. When the perforation ratio of the hole is large, it is necessary to strengthen the section steel. The regular practice is to welding the reinforcement plates to the main steel column with plug welding around the holes, which is not convenient in construction and the quality of the plug welding is hard to guarantee. In this paper another two strengthening methods were proposed, which were welding the reinforcement plates to the main steel column with front fillet welding and all around welding. Then, with three welding methods, several steel section columns, under axial and eccentric compression and of different perforation ratios, were analyzed and compared by ABAQUS finite element method. The results indicated that the two proposed welding methods are effective.
{"title":"Welding methods of reinforcement plates on the section steel in SRC columns","authors":"Haiyan Zhang, Xiaomei Chen, Zhi Luo","doi":"10.1109/ICETCE.2011.5775344","DOIUrl":"https://doi.org/10.1109/ICETCE.2011.5775344","url":null,"abstract":"In the steel reinforced concrete members, since the main reinforcement in beams may pass through the steel web and flange of the steel reinforced concrete columns, perforation in the section steel can't be avoided. When the perforation ratio of the hole is large, it is necessary to strengthen the section steel. The regular practice is to welding the reinforcement plates to the main steel column with plug welding around the holes, which is not convenient in construction and the quality of the plug welding is hard to guarantee. In this paper another two strengthening methods were proposed, which were welding the reinforcement plates to the main steel column with front fillet welding and all around welding. Then, with three welding methods, several steel section columns, under axial and eccentric compression and of different perforation ratios, were analyzed and compared by ABAQUS finite element method. The results indicated that the two proposed welding methods are effective.","PeriodicalId":6340,"journal":{"name":"2011 International Conference on Electric Technology and Civil Engineering (ICETCE)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78149215","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2011-04-22DOI: 10.1109/ICETCE.2011.5775867
Jiang Yin-jun, Zhu Yong-hua
Due to lack of effective detection method, channel quality accidents of post-tensioned concrete construction cannot to be discovered on time. An infrared detection principle based on electric heating is intended to be put forward to solve the above-mentioned problem. The results of the numeric simulation on the temperature field of a prestressed concrete component indicate that the electric heating infrared detection technology, for its energy consumption, efficiency and safety, is feasible for detecting the channel quality of prestressed concrete component, but the electric current needs to be controlled to avoid high temperature which affects the physical and mechanical properties of the strand and the concrete.
{"title":"Simulation of a new approach of prestressed concrete component channel quality test","authors":"Jiang Yin-jun, Zhu Yong-hua","doi":"10.1109/ICETCE.2011.5775867","DOIUrl":"https://doi.org/10.1109/ICETCE.2011.5775867","url":null,"abstract":"Due to lack of effective detection method, channel quality accidents of post-tensioned concrete construction cannot to be discovered on time. An infrared detection principle based on electric heating is intended to be put forward to solve the above-mentioned problem. The results of the numeric simulation on the temperature field of a prestressed concrete component indicate that the electric heating infrared detection technology, for its energy consumption, efficiency and safety, is feasible for detecting the channel quality of prestressed concrete component, but the electric current needs to be controlled to avoid high temperature which affects the physical and mechanical properties of the strand and the concrete.","PeriodicalId":6340,"journal":{"name":"2011 International Conference on Electric Technology and Civil Engineering (ICETCE)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80526370","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2011-04-22DOI: 10.1109/ICETCE.2011.5775406
W. Lili, Yang Zheng, Yang Lipei
This paper examines the Dali Bai nationality courtyard folk residence, based on the ecological system theory, modern product design theory and landscape architecture viewpoint. It explores how to put a modern environmental facility into the local regional culture after remolding through the analysis on environmental facility of Bai nationality courtyard folk house in order to adapt the modern ecological residence model.
{"title":"The research on environmental facility of traditional Residence based on modern residence pattern —Takes the Dali courtyard traditional folk house as an example","authors":"W. Lili, Yang Zheng, Yang Lipei","doi":"10.1109/ICETCE.2011.5775406","DOIUrl":"https://doi.org/10.1109/ICETCE.2011.5775406","url":null,"abstract":"This paper examines the Dali Bai nationality courtyard folk residence, based on the ecological system theory, modern product design theory and landscape architecture viewpoint. It explores how to put a modern environmental facility into the local regional culture after remolding through the analysis on environmental facility of Bai nationality courtyard folk house in order to adapt the modern ecological residence model.","PeriodicalId":6340,"journal":{"name":"2011 International Conference on Electric Technology and Civil Engineering (ICETCE)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79144338","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2011-04-22DOI: 10.1109/ICETCE.2011.5776255
Lian-meng Chen, Guanglong Wu
Based on the conception of confined concrete, three kinds of confined concrete column with two lateral confinements, such as two steel tubes, two lateral spiral hoops, outer spiral hoops and inner steel tube, are brought forward firstly. Then the calculation formulas of bearing capacity subjected to the axial force for the above three confined concrete column are proposed, based on the existing calculation methods of bearing capacity for the concrete column confined with spiral hoops and steel tube. The existing experimental results indicate that the proposed methods are right and valid, and can be applied in the design of the confined concrete column.
{"title":"Bearing capacity analysis for confined concrete column with two lateral confinements","authors":"Lian-meng Chen, Guanglong Wu","doi":"10.1109/ICETCE.2011.5776255","DOIUrl":"https://doi.org/10.1109/ICETCE.2011.5776255","url":null,"abstract":"Based on the conception of confined concrete, three kinds of confined concrete column with two lateral confinements, such as two steel tubes, two lateral spiral hoops, outer spiral hoops and inner steel tube, are brought forward firstly. Then the calculation formulas of bearing capacity subjected to the axial force for the above three confined concrete column are proposed, based on the existing calculation methods of bearing capacity for the concrete column confined with spiral hoops and steel tube. The existing experimental results indicate that the proposed methods are right and valid, and can be applied in the design of the confined concrete column.","PeriodicalId":6340,"journal":{"name":"2011 International Conference on Electric Technology and Civil Engineering (ICETCE)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81290696","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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