铝合金板件螺栓连接承压强度试验与计算方法  

Experiments and Computational Method on Bearing Capacity of Bolted Joint for Aluminum Alloy Sheets

作　　者：王元清[1] 袁焕鑫[1] 石永久[1] 张贵祥 

机构地区：[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]北京万科企业有限公司,北京100125

出　　处：《四川大学学报（工程科学版）》2011年第5期203-208,共6页Journal of Sichuan University (Engineering Science Edition)

基　　金：高等学校博士学科点专项科研基金资助项目(20090002110046)

摘　　要：螺栓连接是铝合金结构中最常用的节点形式,对铝合金板件螺栓连接节点的承压性能进行试验研究与分析是十分必要的。结合建筑结构领域常用的2种铝合金材料6061-T6和6063-T5,设定螺栓直径和端距为试验参数,总共对20个螺栓连接节点试件进行了加载试验,得出了节点试件的承压承载力以及荷载与螺栓孔变形的关系。利用ANSYS建立了有限元模型对节点试件进行了数值模拟,计算结果与试验值吻合良好;基于试验验证的有限元模型,分析了螺栓端距、预拉力和摩擦系数等因素对承压性能的影响,总结提出了铝合金板件螺栓连接承压强度的计算公式,可以作为相关设计的参考依据。Twenty specimens of alloys 6061-T6 and 6063-T5 were tested,with screw diameter and end distance as testing parameters.Ultimate bearing capacities of the bolted joints were obtained,as well as the relationship between applied load and deformation of bolt hole.Corresponding numerical simulation was implemented on the basis of finite element（FE） model set up by ANSYS software.The accuracy of the FE model was verified with respect to the perfect agreement between test results and those predicted by numerical simulation.The contribution of end distance,pretension and friction coefficient to the bearing capacity of bolted joints was elaborated.Eventually,a new computational formula for bearing capacity of bolted joint for aluminum alloy sheets was proposed.

关 键 词：铝合金 螺栓连接 承压性能 计算方法 

分 类 号：TU395[建筑科学—结构工程]