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The Study of Environmental Temperature Effect on Overlong Concrete External Wall of Semi-basement

Author: ChenXiaoDong
Tutor: LiSiMing
School: Tongji University
Course: Structural Engineering
Keywords: Long structure Ambient temperature effect Finite Element Analysis Long-term observations
CLC: TU93
Type: Master's thesis
Year: 2006
Downloads: 131
Quote: 8
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Abstract


With the economic development and technological progress , all over the country have emerged a large number of long concrete structure , the research focuses on one of these structures is how to deal with a function of temperature and shrinkage of concrete structure caused cracking . A practical engineering background, two aspects of long-term observations calculated through theoretical analysis and on-site , to study the effect of the long concrete semi- basement of the external walls in the role of ambient temperature and shrinkage of concrete structure . Departure from the existing theory and engineering experience , need to be considered in the analysis of the environmental temperature effects long structure changes in ambient temperature , concrete shrinkage , creep and other factors , to determine the most unfavorable temperature load of the study wall , and through the empirical formula and finite element linear elastic analysis and calculation of the effect of the wall structure under the most adverse temperature load and come within the wall stress distribution law . Nonlinear process of the wall ambient temperature effect analysis to to discuss proposed calculation method based on creep , stress relaxation theory stress simplify . This article describes the work of his long-term observation of the actual wall , through the analysis of the observational data , qualitative summed up some of the laws of distribution of temperature and strain fields in the wall , and the strain field changes with the temperature field . Finally, a brief discussion on the direction of further work , and a new long structure cracking ideas .

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