建筑结构学报2017，Vol.38Issue(7)：1-8,8.DOI:10.14006/j.jzjgxb.2017.07.001
铝合金网壳箱形-工字形杆件盘式节点受力性能试验研究
Experimental study on mechanical performance of box-I section member TEMCOR joints in aluminum alloy shell structures
摘要
Abstract
In order to study the mechanical behavior of box-I section member TEMCOR joints used in aluminum alloy shell structures,experiments of two full-scale specimens of TEMCOR joints of different sizes used in Niushou Mountain Buddha Palace project under static load were conducted.Finite element analysis by ABAQUS was used to simulate the experimental process.In the experiment,the ends of the beams were simply supported,and the vertical loads were applied to the center region of the joint.The experimental data and phenomena show that failure mode of the two kinds of specimens is brittle failure.When subjected to ultimate load,failure mode of specimen JD1 whose two opposite members are box-section members is that the bottom flange of one box-section member is fractured,top and bottom plates buckle and bolts near the fracture surface are broken.Failure mode of specimen JD2 whose two opposite members are I-section members under ultimate load is that the bottom plate is fractured while members and bolts are intact.Stress distribution under ultimate load is that the web and plates of JD1 are elastic and satisfies plane cross-section assumption with neutral axis in the middle of the cross-section.Members of JD2 are elastic while neutral axis of I section member is at 1/6 height of the web lower than the major axis of the cross-section.Stress of the bottom plate where α =60° and α =180° is close to yield strength.The ultimate capacity and initial rotational stiffness of JD1 are both nearly 1.5 times that of JD2.The local stress distribution,load-vertical displacement curves and moment-rotation curves obtained from finite element models agree well with experimental results which can be references to similar joints.关键词
铝合金网壳/箱形-工字形杆件盘式节点/静力试验/有限元分析/受力性能/破坏模态Key words
aluminum alloy shell structure/box-I section member TEMCOR joint/static test/FEA/mechanical behavior/failure mode分类
建筑与水利引用本文复制引用
王元清,柳晓晨,石永久,欧阳元文,尹建..铝合金网壳箱形-工字形杆件盘式节点受力性能试验研究[J].建筑结构学报,2017,38(7):1-8,8.基金项目
国家自然科学基金重点项目(51038006). （51038006）
