干砌填充墙面外受力性能研究

发布时间：2018-04-18 22:36

本文选题：半嵌固填充墙 + 面外受力性能　；参考：《哈尔滨工业大学》2014年硕士论文

【摘要】：填充墙框架结构在世界各地是一种应用广泛的建筑结构体系，体系中填充墙对房屋仅仅只有空间的分割和维护作用，，而框架则承担了承重、支撑和抗剪的作用。各种震害资料表明了填充墙框架结构在地震中容易发生整体面外倒塌，这也让国内外学者越来越关心填充墙平面外的安全问题。而随着结构体系和材料的发展，一种新型的填充墙——干砌填充墙逐渐地受到人们的关注，此类填充墙在面内对整体结构体系的耗能减震的贡献很大，能够较好地解决刚度和能耗之间的矛盾，但其面外受力性能也是不容忽视的，故本文着重研究砌块凸榫形状的改变对填充墙平面外的受力性能影响，这对推进新型砌块的研究以及推进新型砌块在实际工程的应用有着借鉴和参考的意义。本文主要展开了以下工作：基于Ansys的有限元平台，对澳大利亚纽卡斯尔大学的Totoev等人所做额干砌填充墙框架结构试验进行有限元数值模拟，不但对该试验进行一个有限元模拟的补充，还验证了该有限元模型在建模方法、材料模型和单元选择上具备合理性，用以保证不同嵌固形状和嵌固比例的干砌填充墙参数分析的可靠度；在Totoev试验的有限元模型基础上，建立出方形、梯形、圆弧型和悬链型嵌固面填充墙框架结构，分析嵌固形状改变对填充墙面外极限承载力、局部等效应力和裂缝分布的影响，研究这四种不同嵌固形状的优劣；除此之外，通过建立起不同嵌固高度和不同嵌固宽度的填充墙框架结构，分析此类因素的变化对干砌填充墙面外受力性能的影响，得出较优的嵌固比例，以达到嵌固面优化的目的；参考传统框架填充墙平面外承载力的计算模型，并且模拟不同高厚比和不同砌体抗压强度的干砌填充墙平面外受力，用以验证干砌填充墙和传统填充墙有相似的面外受力性能；基于有限元的模拟数据，提出干砌填充墙平面外承载力的计算公式。
[Abstract]:The infilled wall frame structure is a kind of widely used building structure system all over the world. In the system, the infilled wall has only the function of space partition and maintenance, while the frame takes on the functions of bearing, supporting and shearing.All kinds of seismic damage data show that the infilled wall frame structure is prone to collapse outside the plane in the earthquake, which makes scholars at home and abroad pay more and more attention to the safety problem of the infilled wall outside the plane.With the development of structural system and materials, a new type of infilled wall, dry masonry infill wall, has been paid more and more attention, and this kind of infill wall has made a great contribution to the energy dissipation and seismic absorption of the whole structure system in the plane.The contradiction between stiffness and energy consumption can be solved well, but the out-of-plane mechanical properties can not be ignored. Therefore, this paper focuses on the influence of the change of the mortise shape of masonry blocks on the out-of-plane mechanical performance of the infilled wall.It is useful for the research of new block and the application of new block in practical engineering.The main work of this paper is as follows:Based on the finite element platform of Ansys, the finite element numerical simulation is carried out for the structural test of the fore-dry-filled wall frame made by Totoev et al of Newcastle University, Australia, which is not only a supplement to the finite element simulation of the test.It is also verified that the finite element model is reasonable in modeling method, material model and element selection to ensure the reliability of parameter analysis of dry-masonry infill wall with different embedded shapes and ratios, based on the finite element model of Totoev test,The frame structure of square, trapezoidal, circular arc and catenary infilled wall is established. The influence of the change of embedded shape on the ultimate bearing capacity, local equivalent stress and crack distribution of the wall is analyzed, and the advantages and disadvantages of these four kinds of inlay shapes are studied.In addition, by setting up the infill wall frame structure with different embedded height and width, and analyzing the influence of the change of this kind of factors on the external mechanical performance of the dry-filled wall, a better fixed ratio is obtained.In order to achieve the purpose of the optimization of the fixed plane, referring to the calculation model of the out-of-plane bearing capacity of the traditional frame infilled wall, and simulating the out-of-plane force of the dry-filled wall with different ratio of height to thickness and different compressive strength of masonry,Based on the finite element simulation data, a formula for calculating the out-of-plane bearing capacity of dry infilled wall is proposed.
【学位授予单位】：哈尔滨工业大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TU364

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