河北工业大学硕士学位论文带缝填充墙抗震性能有限元分析姓名：徐立英申请学位级别：硕士专业：结构工程指导教师：戎贤20081101河北工业大学硕士学位论文 I 带缝填充墙抗震性能有限元分析带缝填充墙抗震性能有限元分析 摘摘 要要 填充墙框架结构体系具有建筑平面布置灵活、室内空间大等优点，广泛用于厂房、商 店、办公楼、医院、教学楼及宾馆等建筑中。在具体的建筑结构设计中，无论分析框架承 受水平荷载或竖向荷载的抗力反应，均未考虑填充墙的作用，只是把填充墙作为一种均布 荷载输入到结构计算软件中，并简单地用周期折减来考虑填充墙对框架结构的影响。这样 的简化是很不合理的，也是很不安全的。由于填充墙的加入，整个结构体系的质量、刚度、 自振周期以及整体变形和位移较纯框架结构都会有较大的不同。 填充墙除了有提高框架结构的承载能力的有利影响外，还有刚度突变形成薄弱层、短 柱效应、扭转效应等不利影响。因此填充墙与框架的连接构造，既要保证正常使用时填充 墙与框架结构的可靠连接，又要避免地震作用时连接过牢或者刚接。本文就建筑抗震设 计规范 (GB 50011 - 2001)中第 13.3.3.2 条提出一种连接构造做法带缝填充墙， 它是 在填充墙中开设竖向通缝（通缝采用在砌体内嵌砌聚苯板来实现） ，并加强填充墙内的钢 筋混凝土现浇带，使得钢筋混凝土现浇带与竖向通缝相交处形成连接键，填充墙外表抹面 砂浆中，在有竖向缝处沿裂缝方向加设钢丝网片来防止正常使用中墙体在竖缝处开裂。使 其兼顾正常使用和地震作用时对结构刚度的不同要求。 本文通过对三榀不同缝宽的带缝填充墙框架试件进行低周反复加载试验，获取柱底钢 筋及连接键钢筋的应力、应变，柱顶的位移，框架的滞回曲线，并观测加载过程中的带缝 填充墙裂缝发展情况。从而分析三组试件的承载能力、刚度变化、延性及耗能能力和连接 键的受力情况。得出此种带缝填充墙框架试件在结构屈服之前具有很好的刚度及整体工作 性能，在结构屈服之后由于连接键的破坏使填充墙退出工作，构件具有很好的变形能力及 耗能能力。在试验研究的基础上，通过 ANSYS 有限元分析软件建立与试验参数相同的模 型进行非线性分析，分析结果与试验结果吻合较好，验证试验结果的正确性。同时建立普 通填充墙框架及纯框架模型，进行有限元非线性分析，得出结果与带缝填充墙框架模型对 比，验证这种连接结构做法的优越性。 最后针对本文所做的研究，提出一些进一步的研究建议。 关键词关键词: 填充墙，框架，连接键，抗震性能，有限元，ANSYS 软件 带缝填充墙抗震性能有限元分析 II FINITE ELEMENT ANALYSIS OF ASEISMATIC PERFORMANCE ON SLIT INFILLED WALLS ABSTRACT Infilled frame structural system with flexible layout and large interior space, are widely used in factories, shops, offices, hospitals, school buildings and hotel buildings. In the building design of the specific structure, no matter what analyse response to the resistance of framework under the level load or the vertical load, which not consider effects of the infilled wall. Just to treat the infilled wall as a uniformly distributed load input the software of the structure, and simply use the discount period to consider the effect of the frame with infilled wall. Such simplification is very unreasonable and unsafe. As the wall filled with the framework, overall framework of the quality, stiffness, the natural vibration, the overall deformation and displacement will be quite different from bare framework. In addition, the beneficial effects to increase the carrying capacity of the framework with infilled walls, and many unbeneficial influences, such as the stiffness effect of infilled walls is analysed for weakness story、short column effect、torsion response in the structure and so on. Therefore, the structure to connect of the wall filled with the framework, it is necessary to ensure that the use of normal time the wall filled with the framework with a reliable connection, and avoid the connections too fast or too stiff when an earthquake happened. In this paper, we suggest a new connecting structure practiceslit Infilled walls with The Code for Aseismic Design of Buildings ( GB50011 - 2001) 13.3.3.2. It opens vertical slits in the infilled walls (use polystyrene board to fill with the slits). And to strengthen the RC cast-in-place cingulum in the infilled walls, made connector with the RC cast-in-place cingulum and vertical slits in the infilled walls. When we plaster on the surface of infilled walls, along the direction of vertical slits set up steel mesh to prevent cracks in the normal used. So that keeping the balance of the different requirements between the normal use and seismic structural rigidity. This article, through three slit infilled walls with different slit width for low cyclic loading tests, obtain the stress and strain in the bottom of columns reinforced steel bars and connectors, 河北工业大学硕士学位论文 III the top of columns displacement, the framework of the hysteresis curve. And observe cracks developments of slit infilled wall in the process of loading. Sequentially, the bearing strength capacity, stiffness changes, ductility, hysteretic property and the force speciality of connectors are studied. Obtains the conclusion that the specimen of the slit infilled frame structure not only has a very good stiffness and overall performance before yield, but also a very good deformability and the capacity of energy after yield. Base on the test, through ANSYS finite element analysis software processed its non-linear analysis with the same parameter of the test, analysis of the results and the test results make good agreement. At the same time, a common filled framework model and a bare frame model were executed, and process the non-linear FEM analysis, compared with the analysis results and the results of slit infilled walls, verify the superiority of this connecting structure practice structure. Finally, some advices are put forward to the next studies in this paper. KEY WORDS: infilled wall，frame，connector，aseismatic performance，finite element，ANSYS software 符号说明符号说明 ekF地震时建筑物受到的水平地震作用，KN。 1地震影响系数, 无量纲。 eqG建筑物的重力荷载代表值，KN。 yf钢筋的屈服强度，N/mm2。 uf钢筋的极限强度，N/mm2。 sE钢筋的弹性模量，N/mm2。 cuf混凝土抗压强度，N/mm2。 tf混凝土抗拉强度，N/mm2。 cf混凝土单轴抗压强度，N/mm2。 cE混凝土弹性模量，N/mm2。 P梁顶处的水平荷载，KN。 柱顶处侧移，mm。 /P 顶点侧移刚度，KN/ mm。 位移延性系数，无量纲。 u结构破坏时的位移，mm。 y结构屈服时的位移，mm。 maxP结构最大荷载，mm。 构件的耗能系数，无量纲。 m平均剪应力强度，N/mm2。 河北工业大学硕士学位论文 1第一章绪论第一章绪论 本章为本文的绪论部分， 内容主