新型卷边部分外包组合柱-钢梁端板连接组合框架层间抗震机理研究  

STUDY OF SEISMIC MECHANISM OF A NEW STYLE LIPPED PEC COLUMN-STEEL BEAM WITH END PLATE-PRETENSION PENETRATING BOLTS CONNECTION

作　　者：杨彬[1] 戴雅萍[1,2] 方有珍[1] 赵宏康 安康[1] 

机构地区：[1]苏州科技学院江苏省结构重点实验室(土木工程学院),江苏苏州215011 [2]苏州市设计研究院有限公司,江苏苏州215021

出　　处：《工业建筑》2017年第5期144-150,共7页Industrial Construction

基　　金：国家自然科学基金项目(51078247;51478286);江苏省自然科学基金(BK2009558)项目;江苏省结构重点实验室开放基金(ZD0905)项目;江苏省"青蓝工程"中青年学术带头人资助(2014);江苏省高校首批优秀中青年教师出国研修计划(2011)项目

摘　　要：为进一步研究新型卷边部分外包组合柱(PEC柱)-钢梁组合框架层间抗震机理,以新型卷边PEC柱-钢梁端板预拉对穿螺栓连接组合框架中间层子结构试验试件作为研究对象,利用有限元软件ABAQUS对其进行水平低周往复荷载下抗震性能的有限元分析。基于计算数据整理,分析试件结构的承载力与抗侧刚度、节点连接性能、耗能能力、剪力分配、变形模式、节点域传力机理和破坏模式等抗震性能。研究结果表明:试件结构具有较高的承载力和初始抗侧刚度;新型卷边PEC柱平均分担试件层间水平剪力;预拉对穿螺栓具有部分自复位功效;梁端连接具有较大的转动刚度,相应限制了其转动能力的发挥;试件最终破坏模式为所有梁端端板附近截面形成塑性铰的塑性机构,而相应层间剪切角和节点连接转角均超过设防烈度地震层间侧移限值1/50,表明该结构体系具有良好的抗震倒塌性能。To further study the seismic mechanism of a new type lipped partially encased composite column （PEC column）-steel beam composite frame, the test specimen of inter-story substructure of lipped PEC colunm-steel beans composite frame with end plates-pretension high-strength penetrating bolts connection was selected as subject, the finite element software ABAQUS was adopted to analyze its seismic behavior under quasi-static cyclic lateral loading. Based on the data, the specimen＇ s primary performances were analyzed, including the bearing capacity, lateral stiffness, connection mechanical properties, shear distribution, deformation pattern, force-transfer mechanism of panel zone and failure mode. The results showed that the specimen processed high bearing capacity and initial lateral resisting stiffness; lateral shear of interstory was evenly resisted by PEC columns and the deformation pattern induced by shear; all joints exhibited various degrees of self-centering function due to pretension penetrating bolts; end plates and pretension high-strength penetrating bolts connection provided larger rotational stiffness to limit its rotation capacity; the failure mode of plastic mechanism primarily induced by plastic hinge forming at cross-section of steel beans nearby end-plate, and interstory drift and connection rotation both exceeded the limit（1/50） of design-based earthquake for frame structure, correspondingly the specimen owned collapse resistance.

关 键 词：PEC柱 组合框架 端板预拉对穿螺栓连接 抗震机理 水平低周循环荷载 有限元分析 

分 类 号：TU352.11[建筑科学—结构工程]