装配式钢框架梁柱节点变形及数值模拟研究  

Research on Deformation and Numerical Simulations of Beam-to-Column Joints for Prefabricated Steel Frames

作　　者：马康 叶锡豪 于海丰[1,2,3] 靳天姣 MA Kang;YE Xihao;YU Haifeng;JIN Tianjiao(School of Civil Engineering,Hebei University of Science and Technology,Shijiazhuang 050018,China;Innovation Center of Disaster Prevention and Mitigation Technology for Geotechnical and Structural Systems of Hebei Province(Preparation),Shijiazhuang 050018,China;Engineering Technology Research Center for Intelligent&Low-Carbon Assembled Building,Shijiazhuang 050018,China)

机构地区：[1]河北科技大学建筑工程学院,石家庄050018 [2]河北省岩土与结构体系防灾减灾技术创新中心(筹),石家庄050018 [3]智能低碳装配式建筑技术研究中心,石家庄050018

出　　处：《工业建筑》2022年第12期94-100,共7页Industrial Construction

基　　金：河北省自然科学基金项目(E2019208322、E2021208010、E2020208074);河北省高等学校科学研究项目(QN2019082);河北省研究生创新资助项目(CXZZSS2021100)。

摘　　要：为研究装配式钢框架梁柱节点的变形机理,明晰节点转动变形的来源,基于组件法对外伸端板连接梁柱节点的转动变形计算方法进行理论推导,对节点试件进行了低周往复荷载试验,采用图像处理方法对加载过程中节点变形情况进行分析,建立了外伸端板连接节点试件的等效简化数值模型。结果表明:外伸端板连接节点的转动变形由节点域剪切变形、端板与柱翼缘间的相对变形、端板加劲肋的屈服变形组成,其中端板与柱翼缘间的相对变形和端板加劲肋的屈服变形是影响节点转角的主要因素;与传统方法相比,转动弹簧考虑多个部件对节点变形的影响能使数值模拟结果与试验结果更为接近,有利于评估节点的抗震性能;采用节点转角组成计算方法对预估节点的抗震性能具有良好的精确度和适用性。To study the deformation mechanism of prefabricated steel frame beam-column joints and clarify the cause of joint rotation deformation, the calculation method of rotation deformation of beam-column joints with extended end-plate connections was theoretically deduced based on component method, and the joint specimens were tested under quasi-static loading. The deformation of joints during loading test was analyzed by image processing method, and the equivalent simplified numerical model of the joint specimens with extended end-plate connection was established. The results showed that the rotational deformation of the extended end-plate joint consists of shear deformation in the panel zone, relative deformation between end-plate and column flange, and yield deformation of end-plate stiffener, among which the relative deformation between end-plate and column flange and yield deformation of end-plate stiffener were the main factors affecting the joint rotation angle. Compared with the traditional processing method, considering the influence of multiple components on the deformation of the joint in the rotating spring could make the numerical simulation results closer to the test results, which was beneficial to evaluate the seismic performance of the joint. The calculation method of joint rotation angle showed good accuracy and applicability for predicting the seismic performance of joints.

关 键 词：装配式钢框架 梁柱组合节点 节点转角 外伸端板连接 抗震性能 

分 类 号：TU391[建筑科学—结构工程]