摘要
进行了2根钢管格构柱偏心受压试验,对试验过程、破坏模式等进行了介绍.试验结果分析表明,采用《钢结构设计规范》(GB 50017-2003)计算的偏压钢格构柱极限承载力与试验结果吻合良好.但该方法当λ较小时,用加法考虑剪切影响的换算长细比的计算结果偏大,与其概念不符,建议采用放大系数的方法来计算.
Two steel tube laced columns subjected to eccentrically loads are tested. The process of the test and destroy mode are introduced. The ultimate load - carrying capacity of steel tube laced columns compressed eccentrically is calculated with code for design of steel structures （GB 50017 -2003）. The calculation results by this method are coincident with the test results. In this method, equivalent slenderhess ratio of laced column is calculated by an addition method to take account of the disadvantageous influence to ultimate load - carrying capacity caused by shearing deformation of lacing members. But for those members with small slenderness ratio, the calculation results of equivalent slenderness ratio are a little larger and are not agree with its definition. So it is suggested that equivalent slenderness ratio is calculated by using an enlarging parameter.
出处
《福州大学学报（自然科学版）》
CAS
CSCD
北大核心
2006年第4期578-582,共5页
Journal of Fuzhou University(Natural Science Edition)
基金
福建省重大科技项目(2003F007)
关键词
钢管
格构柱
偏心受压
极限承载力
steel tube
laced columns
compress eccentrically
ultimate load - carrying capacity
