双轴对称不锈钢受弯构件残余变形的影响因素分析

山东大学学报(工学版) ›› 2011, Vol. 41 ›› Issue (1): 95-100.

双轴对称不锈钢受弯构件残余变形的影响因素分析

王元清¹,高博²*,戴国欣²,石永久¹,袁焕鑫¹

1. 清华大学土木工程系土木工程安全与耐久教育部重点实验室, 北京 100084;
2. 重庆大学土木工程学院, 重庆 400045

收稿日期:2010-05-28 出版日期:2011-02-16 发布日期:2010-05-28
通讯作者: 高博(1985- ),男,山东莱芜人,硕士研究生,主要研究方向为钢结构. E-mail: rightgaobo@yeah.net E-mail:rightgaobo@yeah.net
作者简介:王元清(1963- ),男,安徽霍山人,教授,博士生导师,主要研究方向为钢结构.E-mail: Wang-yq@tsinghua.edu.cn
基金资助:
“十一五”国家科技支撑计划重点项目课题资助项目(2006BAJ03A02-1)

Influencing factors analysis of residual deformation of doubly symmetric stainless steel flexural members

WANG Yuan-qing¹, GAO Bo²*, DAI Guo-xin², SHI Yong-jiu¹, YUAN Huan-xin¹

1. Key Laboratory of Civil Engineering Safety and Durability of China Education Ministry, Department of
Civil Engineering, Tsinghua University, Beijing 100084, China;
2. Faculty of Civil Engineering, Chongqing University, Chongqing 400045, China

Received:2010-05-28 Online:2011-02-16 Published:2010-05-28

摘要/Abstract

摘要：

为了研究对称截面不锈钢受弯构件的残余变形和抗弯强度设计方法,参考Mazzolani等人提出的控制残余挠度不超过梁长1／1000的方法,对340根梁进行了参数化有限元分析,并且确定了构件的截面塑性发展系数。通过有限元计算,指出了塑性发展系数与构件几何形状、材料性能等影响因素之间的关系,以有限元结果为基础,提出了对称截面不锈钢受弯构件强度和变形的设计方法。结果表明:通过限制截面塑性发展系数可以有效控制受弯构件的残余变形,从而满足不锈钢受弯构件强度和变形的要求。

Abstract:

In order to investigate residual deformation and strength of doubly symmetric stainless steel flexural members, influencing factors analysis was presented by adopting the residual displacement method suggested by Mazzolani. With finiteelement analysis (FEA), 340 stainless steel I-beams were computed and the plastic adaption coefficient was suggested, which controlled the residual displacement less than 1／1000 of the beam span. The relationship between the plastic adaption coefficient and the geometry of members and material property was deduced. Design methods based on the FEA results were also proposed. The results indicated that the plastic adaption coefficient is the best way to control the residual deformation and ensure the requirements of the strength and deformation of stainless steel flexural members.

Key words: stainless steel, flexural members, residual deformation, finite-element analysis, design method

王元清1,高博2*,戴国欣2,石永久1,袁焕鑫1. 双轴对称不锈钢受弯构件残余变形的影响因素分析[J]. 山东大学学报(工学版), 2011, 41(1): 95-100.

WANG Yuan-qing1, GAO Bo2*, DAI Guo-xin2, SHI Yong-jiu1, YUAN Huan-xin1. Influencing factors analysis of residual deformation of doubly symmetric stainless steel flexural members[J]. JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2011, 41(1): 95-100.

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