[1]张晋,罗鑫昌,蔡建国,等.分段施工方法对大型张弦桁架结构设计的影响[J].深圳大学学报理工版,2012,29(No.2(095-188)):142-147.[doi:10.3724/SP.J.1249.2012.02142]
 ZHANG Jin,LUO Xin-chang,CAI Jian-guo,et al.Influence of segmented construction methods on the design state of the large-span truss string structure[J].Journal of Shenzhen University Science and Engineering,2012,29(No.2(095-188)):142-147.[doi:10.3724/SP.J.1249.2012.02142]
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分段施工方法对大型张弦桁架结构设计的影响()
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《深圳大学学报理工版》[ISSN:1000-2618/CN:44-1401/N]

卷:
第29卷
期数:
2012年No.2(095-188)
页码:
142-147
栏目:
土木建筑工程
出版日期:
2012-03-23

文章信息/Info

Title:
Influence of segmented construction methods on the design state of the large-span truss string structure
作者:
张晋 罗鑫昌 蔡建国 杨小敬 冯健
东南大学混凝土及预应力混凝土结构教育部重点实验室,南京 210096
Author(s):
ZHANG Jin LUO Xin-chang CAI Jian-guo YANG Xiao-jing and FENG Jian
Key Laboratory of Concrete & Prestressed Concrete Structures of the Ministry of Education, Southeast University, Nanjing 210096, P. R. China
关键词:
施工力学张弦桁架结构分段施工方法极限状态预应力张拉控制力承载能力极限状态应力比大型钢结构
Keywords:
construction mechanicstruss string structure segmented construction method ultimate limit state prestress tension control force ultimate limit state stress ratio large steel structure
分类号:
TU 394
DOI:
10.3724/SP.J.1249.2012.02142
文献标志码:
A
摘要:
以中国新疆国际会展中心张弦屋盖为例,分析不同分段施工对大型张弦桁架结构设计的影响,建立了考虑不同分段施工方法的设计模型,采用基于状态非线性的有限元单元生死法对设计模型的计算结果进行分析.结果表明,在统一的零状态以及有限的预应力张拉控制目标条件下,结构预应力状态下张弦桁架的拉索内力、滑动端位移及拉索张拉控制力需结合具体的分段施工来确定;承载能力极限状态下,一次成型设计方法得到的支承柱的应力比偏小,设计结果偏于不安全;滑动端极限位移与分段施工方法密切相关,传统一次成型设计方法得到的结果偏小,致使滑程的设计结果偏于不安全.
Abstract:
In order to obtain the influence of the design state of the large-span truss string structure, design models of the beam string roof from the Xinjiang Exhibition Center were set up with consideration of different segmented construction methods. The design results were discussed with the “birth-death” elemental method based on nonlinear states. The research shows that, under the pre-stressed state, cable forces, displacements of the sliding ends and tension control forces of large span truss string structures should be determined in consideration of specific segmented construction methods. Under the ultimate limit state, stress ratios of supporting columns with one-step design method are small and the design results tend to be unsafe. The maximum displacement of sliding ends is closely related to segmented construction methods. The displacement values obtained by traditional one-step design method are small, and the sliding range tends to be unsafe.

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备注/Memo

备注/Memo:
Received:2010-11-03;Revised:2012-01-10;Accepted:2012-02-10
Foundation:National Natural Science Foundation of China (50478075)
Corresponding author:Associate professor ZHANG Jin. E-mail: zhangjin0622@139.com
Citation:ZHANG Jin, LUO Xin-chang, CAI Jian-guo, et al. Influence of segmented construction methods on the design state of the large-span truss string structure[J]. Journal of Shenzhen University Science and Engineering, 2012, 29(2): 142-147.(in Chinese)
基金项目:国家自然科学基金资助项目(50478075);江苏省六大人才高峰资助项目(07-F-008)
作者简介:张晋(1974-),男(汉族),安徽省巢湖市人,东南大学副教授、博士. E-mail: zhangjin0622@139.com
引文:张晋,罗鑫昌,蔡建国,等. 分段施工方法对大型张弦桁架结构设计的影响[J]. 深圳大学学报理工版,2012,29(2):142-147.
更新日期/Last Update: 2012-03-28