所属单位：

土木工程学院

发表刊物：

proceeding of Shanghai Internationnal Conference on Technology of Architecture and Structure(ICTAS 2009)（Ⅰ)

关键字：

中文关键字：钢拱；大跨度结构；现场试验；几何非线性分析；初始缺陷，英文关键字：steel arch; long-span structure; field test; geome

摘要：

This paper mainly describers the stability and the defect effect of long-span steel multi-arches. The field in-situ test of long-span steel with multi-arches is conducted and the whole element model of long-span steel multi-arches is established by the ANSYS software. Then eigenvalue buckling analysis and geometrical nonlinear analysis are carried out, the buckling mode of the structure is identified and the effect of initial geometric imperfection is analyzed .Mechanism of the structure, destruction of shape and weak position are put out. Comparing with the test data and theoretical analysis, its calculated results accords well with those from the test data. The results of calculation show the stability of long-span steel multi-arches plays a control role in structural ultimate bearing capacity，and the structure is sensitive to the initial geometric defect. It is of important reference for the kind of design in security and reasonable.

备注：

熊仲明

合写作者：

徐元刚,韦俊,曹欣

第一作者：

熊仲明

论文类型：

期刊论文

卷号：

卷：

期号：

期：

页面范围：

页：198-210

是否译文：

否

发表时间：

2009-10-01