框支短肢剪力墙论文：框支短肢剪力墙结构的静力弹塑性分析.doc

框支短肢剪力墙论文：框支短肢剪力墙结构的静力弹塑性分析【中文摘要】框支短肢剪力墙结构体系自问世以来,以其诸多优点获得了人们的不断肯定和推广。由于这种结构形式出现较晚,且受力特征明显不同于框支剪力墙结构和短肢剪力墙结构,对其理论研究尚不完善。近年来,针对此种结构体系,国内的学者进行了一些理论分析和研究,但遗憾的是,绝大多数的分析和研究都是针对结构在多遇地震作用下进行的弹性计算分析。我们知道,结构在罕遇地震作用下,部分结构构件将率先步入非线性工作状态,结构整体刚度也将随之发生改变,此阶段下分析完全不同于弹性阶段的分析。因此,对框支短肢剪力墙结构在罕遇地震作用下的弹塑性分析就显得尤为重要。为了深入研究框支短肢剪力墙结构在罕遇地震作用下的受力性能,为工程设计提供参考,本文借助有限元通用软件SAP2000中Push-over法对框支短肢剪力墙结构在不同水平侧向力加载模式下进行静力弹塑性分析,对结构的周期、塑性铰出现顺序及状态、层间位移角、性能点等因素进行分析,并结合能力谱法对结构的抗震性能进行评估,判断结构是否存在薄弱层。通过改变模型参数,包括外筒刚度,核心筒刚度,框支柱刚度,转换层刚度,对算例模型进行对比分析,总结框支短肢剪力墙结构在罕遇地震作用下的静力弹塑性性能规律。【英文摘要】Since the frame-supported short-leg shear wall structure came out, the frame-supported short-leg shear wall structure won peoples constantly affirmation and promotion, with its many advantages. This structure form relatively late, and its mechanical characteristics is clearly different from frame-supported shear wall and short-leg shear wall, theoretical study is still not perfect.In recent years, domestic scholars have made some theoretical studies on such a structural system, but unfortunately, most of the analysis on the structure is in frequent seismic action. As we know, under the rare earthquake, there may be some elements first to enter the plastic stage, the stiffness is no longer maintained, the calculation of this stage is very different from the elastic stage. Therefore, Push-over analysis on frame-supported shear wall structure under rare earthquake is particularly important.In order to study the bearing performance of frame-supported shear wall structure under the rare earthquake, provide reference to engineering design, the universal finite element analysis and design software SAP2000 was used to carry through Push-over analysis on framed-supported short-leg shear wall, under two levels of loading mode. The period, displacement, sequence of hinges and performance point are analysed. Combining the capacity spectrum method, evaluate structural seismic performance and weak layer. Meanwhile, change structure parameters, including stiffness of outside box, stiffness of the core box, stiffness of the frame columns, stiffness of the transfer floor structure, in order to get the seismic performance rule of frame-supported short-leg shear wall structure under the rare earthquake.【关键词】框支短肢剪力墙 静力弹塑性分析 SAP2000 抗震性能 罕遇地震【英文关键词】frame-supported short-leg shear all Push-over analysis SAP2000 seismic performance rare earthquake【目录】框支短肢剪力墙结构的静力弹塑性分析摘要4-5Abstract5第1章 绪论9-141.1 课题背景及意义9-101.2 框支短肢剪力墙结构概述10-131.2.1 框支短肢剪力墙结构特点10-111.2.2 框支短肢剪力墙结构的研究现状11-131.3 本文研究内容13-14第2章 静力弹塑性分析综述14-222.1 引言142.2 静力弹塑性分析方法的本质14-152.3 静力弹塑性分析方法的思路和特点152.3.1 静力弹塑性分析的思路152.3.2 静力弹塑性分析的特点152.4 静力弹塑性分析方法的发展及研究现状15-172.4.1 国外的发展及研究现状15-162.4.2 国内的发展及研究现状16-172.5 静力弹塑性分析在SAP2000 中的实现17-212.5.1 塑性铰18-192.5.2 剪力墙的非线性模拟19-202.5.3 水平侧向力分布模式20-212.6 本章小结21-22第3章 典型算例模型分析22-333.1 算例模型设计22-243.2 框架单元塑性铰添加243.3 剪力墙模拟24-253.4 荷载指定和分析工况25-263.5 分析结果的处理26-313.5.1 结构周期263.5.2 性能点26-283.5.3 层间弹塑性位移角28-293.5.4 出铰顺序及状态29-303.5.5 剪力墙分析30-313.6 本章小结31-33第4章 框支短肢剪力墙的弹塑性性能规律分析33-694.1 外筒刚度对结构弹塑性性能的影响33-424.1.1 等效侧向刚度比规律33-344.1.2 结构周期规律34-354.1.3 性能点规律35-364.1.4 层间弹塑性位移角规律36-404.1.5 出铰顺序及状态40-414.1.6 剪力墙受力性能规律41-424.2 核心筒刚度对结构弹塑性性能的影响42-504.2.1 等效侧向刚度比规律424.2.2 结构周期规律42-444.2.3 性能点规律44-454.2.4 层间弹塑性位移角规律45-484.2.5 出铰顺序及状态48-504.2.6 剪力墙受力性能规律504.3 框支柱刚度对结构弹塑性性能的影响50-594.3.1 等效侧向刚度比规律50-514.3.2 结构周期规律51-524.3.3 性能点规律52-534.3.4 层间弹塑性位移角规律53-574.3.5 出铰顺序及状态57-584.3.6 剪力墙受力