|Table of Contents|

Analysis of Member Shortening and Forces of Super Tall Composite Building Based on Temperature Change(PDF)

《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

Issue:
2010年04期
Page:
78-85
Research Field:
Publishing date:
2010-12-20

Info

Title:
Analysis of Member Shortening and Forces of Super Tall Composite Building Based on Temperature Change
Author(s):
ZHENG Yi-min1;  ZHANG Pan-pan2;  ZHAO Xin1
1. Architectural Design & Research Institute of TongjiUniversity(Group)Co., Ltd., Shanghai 200092, China; 2. Department of Building Engineering, Tongji University, Shanghai 200092, China
Keywords:
temperature prediction;  extreme temperature;  super tall composite building;  vertical shortening;  out-trigger internal force
PACS:
TU375.3
DOI:
-
Abstract:
The effect of solar irradiance and greenhouse gas on the climate was considered. A linear relation model was established by examining the quantitative relations between global warming and radiative forcing. Based on it, the predictions of the extreme highest temperature and extreme lowest temperature in Shanghai were carried out in the next one hundred years. The most adverse cases of positive and negative temperature difference were obtained by analyzing all kinds of the most adverse temperature effect. Based on the temperature change method and normal method, MIDAS software was adopted to analyze the vertical shortening and differential shortening of typical members of super tall composite building caused by temperature differences under the construction stage and the serviceability stage, as well as the effect to the out-trigger and the axial force of typically vertical members was studied. Study results show that the extreme highest temperature and extreme lowest temperature in Shanghai rise frequently, and the extreme highest temperature in Shanghai will rise by 3 ℃ in 2110. There will be considerably differences in the vertical shortening and the differential shortening between the huge column and the core-wall, and the axial force of the bottom and the middle floors under the two different temperature methods. Sharp change occurs in the out-trigger floors. The out-trigger internal force caused by temperature difference achieves 63% of the most adverse load combination.

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Last Update: 2010-12-20