H形截面6061-T6铝合金轴心受压构件试验及计算方法研究  

Experimental investigation and numerical method research on axially loaded H-section 6061-T6 aluminium compression members

作　　者：张铮[1,2] 陈学超[3] 庄金平[1,2] 郑秀梅 

机构地区：[1]福建工程学院土木工程学院,福建福州350118 [2]福建省土木工程新技术与信息化重点实验室,福建福州350118 [3]福州大学土木工程学院,福建福州350116

出　　处：《西安建筑科技大学学报（自然科学版）》2016年第2期195-201 206,共8页Journal of Xi'an University of Architecture & Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(51478119);福建省高校杰出青年科研人才培育计划资助项目(JA13209)

摘　　要：以长细比为主要参数,测试了6个两端铰支的H形截面6061-T6铝合金挤压型材轴压构件的稳定承载力,所有试件均在强轴平面内发生了整体弯曲屈曲,得到了实测稳定系数.同时进行了铝合金材料的性能测试,获得了材性数据.建立了有限元分析模型,并经由试验结果的验证.进行了参数分析,并据此建议了新的柱子曲线.将GB50429、EN1999和建议的柱子曲线与参数分析结果和国内现有试验数据分别进行了比较,发现这两部规范的计算结果很接近且均过于保守,而建议的柱子曲线与参数分析和试验结果均吻合最好且总体偏于安全,可供工程应用和规范修订参考.Stability tests were conducted on axially loaded extruded H-section 6061-T6 aluminum compression members.The main parameters varied in the tests are slenderness ratio.All 6 specimens that were hinged at both ends and tested failed by overall flexural buckling in the plane of the major axis.The measured stability coefficients were determined.At the same time,the performances of aluminum alloy material used in test were surveyed,and the material property data were obtained.The finite element analysis model was established and verified by the test results.A series of parametric analysis was carried out,and on the basis of this a new column curve was proposed by a nonlinear fitting.The computational column curves of GB50429,EN1999 and the proposal were compared with the parametric analysis results and the domestic existing test data at home.It is found that the two codes are very close and both are too conservative.Meanwhile,the proposed column curve is in agreement with the parametric analysis results and the experimental results and are overall safety,which can provide useful information for engineering application and specification revision of such aluminium structures.

关 键 词：铝合金轴心受压构件 H形截面 6061-T6 稳定系数 柱子曲线 

分 类 号：TU395[建筑科学—结构工程]