钢框架 内填预制RC剪力墙结构整体抗侧力性能研究-建筑与土木工程专业论文.docxVIP

Research on Lateral Resistance Performance of Steel Frame- Precast Reinforced Concrete Infill Wall A Dissertation Submitted for the Degree of Master in Engineering Candidate：Yu Lin Supervisor：Prof. Zhou Tianhua Senior Eng. Chen Junwu Chang’an University, Xi’an, China -I- -I- - - PAGE IV- 摘 要 钢框架-内填预制 RC 剪力墙结构通过内填 RC 剪力墙来提高结构的抗侧刚度同时 又能同钢框架同步安装，实现预制装配化，充分发挥钢框架和 RC 剪力墙二者的优点， 具有良好的经济效益。本文对钢框架-内填预制 RC 剪力墙结构整体的抗侧力性能进行 研究，具体内容如下： 1.利用通用有限元软件 ABAQUS，对钢框架和钢框架-内填预制 RC 剪力墙结构进 行数值模拟，对比了二者在单调加载下的力学性能，认为在钢框架中加入 RC 剪力墙 后，可有效提高结构抗侧刚度和抗侧承载力；同时，分析钢框架-内填预制 RC 剪力墙 结构中内填 RC 剪力墙和钢框架剪力的分配关系，随着结构侧移的增大，内填 RC 剪 力剪力分担率减小。对钢框架-内填预制 RC 剪力墙结构做变参数分析，认为内填 RC 剪力墙高宽比和钢框架轴压比是影响结构抗侧刚度和承载力的最主要因素，内填 RC 剪力墙高厚比、加入型钢以及分片布置剪力墙对结构刚度、承载力以及延性都有影响， 并给出相关参数的合理取值建议。 2.对 3 跨 6 层、18 层钢框架和钢框架-内填预制 RC 剪力墙结构在倒三角分布侧向 荷载作用下的力学性能进行对比分析，并对内填 RC 剪力墙布置方式对结构整体抗侧 力性能的影响进行了研究，给出内填 RC 剪力墙布置方式的建议。 3.以实际工程为背景，建立 6、18 层钢框架和钢框架-内填预制 RC 剪力墙结构整 体模型，分别代表多、高层结构，应用模态分析法对结构的动力特性进行研究，应用 反应谱法和时程分析法对结构在地震作用下的动力响应进行分析。 关键词：钢框架-内填预制 RC 剪力墙、抗侧力性能、动力特性、地震响应 Abstract Through the precast RC infill wall, the composite steel frame-precast reinforced concrete infill wall can increase the lateral stiffness of the structure. And the infill RC wall can be installed at the same time with steel frame. Thus the composite steel frame-precast RC infill wall give full play to the advantages of the steel frame and the RC shear wall, and have a good economic benefit. The paper was aimed at the investigation of the lateral resistance performance of the whole steel frame-precast RC infill wall and conclusions of the investigation were listed as following: Numerical simulations of steel frame and steel frame-precast reinforced concrete infill wall were carried out using the ABAQUS program to compare the mechanical property of the two structures under monotonic loading. The lateral stiffness and bearing capacity have been improved after infilling RC walls into steel frame. The ratio of the shear force bore by infill RC walls reduced along with the increasing of t