混合联肢部分外包组合剪力墙-钢连梁刚接节点极限承载力研究  

The Ultimate Bearing Capacity of Rigid Joint of Hybrid Coupled Partially Encased Composite Shear Wall-Steel Coupling Beam

作　　者：陈锘 石韵 苏明周[1,2] 贺小刚 CHEN Nuo;SHI Yun;SU Mingzhou;HEXiaogang(School of Civil Engineering,Xi'an University of Architecture and Technology,Xi'an 710055,China;National Level Civil Engineering Experimental Teaching Demonstration Center,Xian University of Architecture and Technology,Xi'an 710055,China;School of Civil Engineering,Xi'an Shiyou University,Xi'an 710065,China)

机构地区：[1]西安建筑科技大学土木工程学院,西安710055 [2]西安建筑科技大学土木工程国家级实验教学示范中心,西安710055 [3]西安石油大学土木工程学院,西安710065

出　　处：《建筑钢结构进展》2022年第9期12-24,共13页Progress in Steel Building Structures

基　　金：国家自然科学基金(51908461);陕西省高校科协青年人才托举计划项目(20200426)。

摘　　要：利用有限元软件ABAQUS模拟混合联肢部分外包组合剪力墙-钢连梁刚接节点在单调加载条件下的受力情况,并进行变参数有限元模拟。基于有限元模拟结果,研究该刚接节点的破坏模式,建立节点极限承载力的理论模型和计算公式。研究表明,混合联肢部分外包组合剪力墙-钢连梁刚接节点的极限承载力主要由以下5部分组成:节点核心区型钢腹板剪切强度、节点核心区翼缘框剪切强度、节点核心区内部混凝土斜压杆抗压强度、节点域范围内中间区格腹板剪切强度以及与钢连梁受拉翼缘相连的核心区型钢柱截面抗剪强度或与型钢柱受拉翼缘相连的中间区格腹板抗拉强度。结合变参数有限元模拟结果,验证了理论模型的可行性和承载力公式的准确性,可为混合联肢部分外包组合剪力墙-钢连梁刚接节点的承载力计算提供依据。The finite element software ABAQUS is used to study the force of a hybrid coupled partially encased composite shear wall-beam joint under monotonic loading,and the parametric study using finite element simulation is carried out.Based on the finite element analysis results,the failure mode of the rigid joint is studied,and a theoretical model and calculation formula of the ultimate bearing capacity of the joint is established.The results show the ultimate bearing capacity of the composite shear wall-beam joint is mainly composed of the following five parts:shear strength of steel webs in the core area of the joint,shear strength of flange frame in the core area of the joint,compressive strength of concrete diagonal compression rods in the core area of the joint,shear strength of intermediate cell web in the range of joint domain,the shear strength of column in the core area connected with the tension flange of the steel coupling beam,or the tensile strength of the intermediate partition web connected with the tension flange of the steel column.According to the results of finite element simulations,the feasibility of the theoretical model and the accuracy of the bearing capacity formula are verified,which can provide a reference for the design of the rigid joints of the hybrid coupled partially encased composite shear wall-steel coupling beam.

关 键 词：部分外包组合剪力墙 钢连梁 刚接节点 有限元分析 破坏模式 承载力公式 

分 类 号：TU398.2[建筑科学—结构工程]