维普资讯 http://www.cqvip.com 国际期刊导读 detailed experimental results of the fou r full—scale hybrid— steel concrete connections with limited seismic detailing have been discussed in a different paper.However,due to on moment—rotation behavior of bolted top and seat angle connections,with double web angles is studied.Several 3D parametric finite element(FE)models are presented in this study whose geometrialc and mechanical properties are used as parameters.In these models,all of the connection com— the inherent complexity of beam—column joints and the u— nique features of the tested specimens,the experimental study was not comprehensive enough.Therefore,in this aper,an analpytical investigation based on the FE models ponents,such as beam,column,angles and bolts are mod— eled using sol id elements.The effect of interactions be— tween components,such as slippage of bolts and frictional forces,are modeled using a surface contact algorithm.To and using the DIANA software is presented.The FE models were validated using the experimental results of the hybrid— evaluate the behavior of connection more precisely,bolt steel concrete connections tested in Nanyang Technolog ical University,Singapore.The critical parameters influencing pretensi0ning force is applied on bolt shanks as the first load the joint’s behaviour,such as the axial load on column,the acse.The results of this numerical modeling are compared connection plate thickness,and the continuation of beam with the results of experimental works done by other re- bottom reinforcement,are varied,and their effects,espe— searchers and good agreement was observed.To study the cially implications on code specifications,are studied. influence of shear force on behavior of these connections, Keywords:Finite element:Hybrid—steel concrete;Plane several models were analyzed using different values of stress element;Cyclic loading;Geometric nonlinearity; shear force.The effect of important parameters,especially Hysteresis loops the effect of web angle dimension,is studied then.An e— Journal of Constructional Steel Research。2008,64(2):190— quation is proposed to determine the reduction factor for in— 2l07 itial rotational stiffness of connection using connection ini— 摘 要:提出一种用于钢一混凝土混合连接的非线 tial rotational sti仟ness,yield moment,the expected shear force and web angle dimension.The proposed equation is 性有限元分析方法。考虑了部分抗震设计的四个足 compared with other existing formulations and it was ob— 尺钢一混连接点的详细的试验结果已在另一篇论文 served that the proposed model is a better estimator of con— 中予以讨论。然而,由于梁柱节点和试验构件特性 nection behavior. 的内在复杂性,试验研究是不够全面的。因此,提出 Keywords:Steel structures;Bolted angle connection;Finite 了一种基于有限元模型和DIANA程序的分析方 element modeling;Web angles;Shear force;Connection 法 有限元模型通过新加坡南洋理工大学钢一混凝 stiffness 土混合连接的试验结果证实有效。对于影响节点性 doumal of oCnstructional Steel Research,2008,64(4):436— 能的参数,如柱子的轴压力、连接板厚度、梁底部纵 446 筋进行了研究。 摘 要:研究了腹板角钢尺寸对双腹板顶底角钢的 关键词:有限元;钢一混凝土混合连接;平面应力元; 弯曲~转动性能影响。研究中采用了多个三维有限 循环荷载作用;几何非线性;滞回曲线 元模型,以其几何和材料特性作为影响参数。在这 些模型中,所有的连接组件,如梁、柱、角钢及螺栓都 采用实体单元建模。构件间的相互作用效应,如螺 弯剪作用下螺栓角部 栓滑移和摩擦,采用表面接触算法建模。为更精确 地评估连接件的性能,在栓杆上施加预拉力作为第 连接的性能分析 一荷载。建模计算的结果与其他研究人员的试验结 果进行对比,得到很好的验证。为研究剪力对连接 Behavior of Bolted Angle Connections 件的影响,分析了不同剪力作用下的模型。随后分 Subjected to Combined Shear 析了其他重要参数,尤其是腹板的影响。提出了利 Force and Moment 用连接件初始转动刚度、屈服弯矩、目标剪力和腹板 尺寸计算其初始转动刚度换算系数的公式,该公式 Akbe r Pi rmoz,Am Saedi Da ryan,Ahad 能更好地评估连接件性能。 Mazohe ri and Haja r Eb rahim Da rbandi 关键词:钢结构;螺栓角钢连接;有限元建模;腹板角 钢;剪切力;连接刚度 Abstract:In this paper,the effect of web angle dimensions 84 钢结构 2008年第8期第23卷总第110期