预张力值对郑州会展中心斜拉结构的稳定性能影响分析

任俊超; 张其林; 童丽萍

doi:10.13204/j.gyjz200805024

预张力值对郑州会展中心斜拉结构的稳定性能影响分析

doi: 10.13204/j.gyjz200805024

1.
1. 亚太建设科技信息研究院,北京 100044;
2.
2. 同济大学土木工程学院,上海 200092;
3.
3. 郑州大学土木工程学院,郑州 450002

详细信息

作者简介:
任俊超,女,1978年11月出生,博士.E-mail:rejao@163.com

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- 文章访问数: 69
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- 被引次数: 0
出版历程
- 收稿日期: 2007-03-20
- 刊出日期: 2008-05-20

INFLUENCE OF PRE-TENSION ON STABILITY PERFORMANCE OF SPATIAL STAY STRUCTURE FOR ZHENGZHOU CONFERENCE AND EXHIBITION CENTER

1.
1. Asia-Pacific Institute of Construction Scientific Information,Beijing 100044;
2.
2. School of Civil Engineering,Tongji University,Shanghai 200092;
3.
3. School of Civil Engineering,Zhengzhou University,Zhengzhou 450002

摘要

摘要: 郑州国际会展中心钢屋盖采用空间斜拉式张弦桁架结构,预张力的施加成为影响结构稳定性能的主要因素之一。以其钢屋盖的一个矩形单元为算例,借助ANSYS分析软件,模拟结构的初始状态进行分析。在自重和预张力作用下,对下悬张拉索分别施加不同大小的预张力,从0 kN到1 500 kN共计18种,研究预张力值变化与结构稳定安全系数以及屈曲模态变化所呈现出的关系。结果表明,预张力值对结构稳定性能的影响趋于复杂化和无规律化。建议在预张力施加过程中,对于稳定性能的影响评判要兼顾多方面的考虑。为斜拉张弦桁架体系在初始状态下的预张力取值提供了设计依据。
- 预张力影响分析 /
- 初始状态 /
- 稳定性能 /
- 斜拉张弦桁架
Abstract: Stay pre-tension truss-string structure is introduced into the steel roof of Zhengzhou International Conference and Exhibition Center. The introduction of pre-tension is turned into one of primary factors which can affect structural stability performances. Based on this, a rectangular steel roof unit as an example is computed with the help of ANSYS soft. The calculative model subjected to deadweight and pre-tension is attempted to simulate structural initial state by choosing eighteen numerical values, ranging from 0 kN to 1 500 kN of pre-tension suspending cables in this system. The relations between pretension and stability safety coefficients and buckling modes are investigated. The results indicate that changes of pre-tension values can seriously affect stablility performances, in particular, rules of variation of stability safety coefficients and buckling modes can not be followed any longer in the design process. It is suggested that some factors can be taken into consideration when effects of pre-tension on stablity are explored. The work of this paper provides a design basis for the pre-tension value of stayed truss-string structures at initial state.
- analysis of pre-tension influences /
- initial state /
- stability performances /
- stay truss-string structure

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参考文献(11)

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