高阻尼橡胶支座力学性能及其应用研究

发布时间：2018-01-15 20:35

本文关键词：高阻尼橡胶支座力学性能及其应用研究　出处：《北京工业大学》2016年硕士论文　论文类型：学位论文

【摘要】：本文根据高阻尼橡胶隔震支座的特点,尝试将其应用于建筑结构领域。论文研究了支座的力学模型,并对其力学性能进行了数值分析和试验研究,同时将该支座应用于框架结构中并分析其隔震效果,论文的主要研究工作和成果如下:(1)根据高阻尼橡胶隔震支座在桥梁隔震中的应用现状,探讨了其在建筑结构领域中应用的可行性。高阻尼橡胶隔震支座有足够的竖向刚度和水平刚度以及足够大的水平变形能力,能稳定的支撑上部结构并使结构的基本周期延长从而起到隔震作用,同时具有弹性复位功能,以及能满足结构在设计使用年限期间的耐久性要求。根据橡胶的材性选择支座的力学模型,并给出模型参数的计算方法。(2)采用ABAQUS有限元分析软件分别建立了按桥梁规范设计的高阻尼橡胶隔震支座和按建筑规范设计的高阻尼橡胶隔震支座的力学分析有限元模型,通过数值模拟研究了三种支座的基本力学性能、剪切性能相关性以及极限状态下的力学性能。(3)为验证理论计算模型和有限元分析的合理性,对高阻尼橡胶隔震支座进行了试验研究。试验内容包括橡胶的材性试验,包括橡胶硬度、单轴拉伸、压缩以及纯剪切的名义应力和名义应变,钢板的力学性能试验,支座的力学性能试验、相关性试验以及极限性能试验。结果表明数值模拟和试验数据吻合良好,高阻尼橡胶支座有很好的耗能能力。(4)对应用高阻尼橡胶支座的7度设防烈度地区的多层框架结构进行了隔震研究,验证支座在建筑结构中的隔震效果。考虑不同地震波类型对比隔震与非隔震结构的地震响应特征,分析了两种工况下框剪结构加速度、底部剪力和层间位移的变化。结果显示高阻尼橡胶隔震支座能显著改变框剪结构的动力特性,延长结构自振周期,对建筑结构有很好的隔震效果。
[Abstract]:According to the characteristics of high damping rubber bearing, applied to the field of building structure. The paper studies the mechanical model of bearing, and the mechanical properties are studied by numerical analysis and experimental research, the bearing is used in frame structure and analyze the effect of isolation, the main research work and achievements are as follows: (1) according to the application status of high damping rubber bearing in bridge isolation, and discussed the feasibility of application in the field of building structure. High damping rubber bearing has enough vertical stiffness and horizontal stiffness and large horizontal deformation, stability of the upper part of the supporting structure and make the structure of basic period in order to extend the isolation effect, and has the elastic reset function, and can satisfy the structure in the design life durability during requirements. According to the rubber material selection support force The model, calculation method and parameters of the model. (2) finite element analysis of mechanical model of high damping rubber bearings were established high damping rubber bearing design according to the code and design according to the architectural specification using ABAQUS finite element analysis software, numerical simulation of the basic mechanical properties of three kinds of bearings. The mechanical properties of shear performance correlation and limit state. (3) in order to verify the rationality of the theoretical calculation model and finite element analysis, the high damping rubber bearing is studied. The test includes material tests including rubber, rubber hardness, tensile, compression and shear stress and the name of the name strain test of Mechanical properties of steel plate, test of mechanical properties of bearing, correlation test and limit performance test. The results show that the numerical simulation and test data of Wen Heliang, high damping Rubber bearing has good energy dissipation capacity. (4) multi frame structure seismic fortification intensity of 7 degree area of application of high damping rubber bearing isolation of research, validation support in the isolation effect in architectural structures. Considering different seismic waves of different types of isolated and non isolated structure, the seismic response characteristics, analysis of shear structure the acceleration of frame under two different conditions, the change of base shear and layer displacement. The results showed that the high damping rubber bearing can significantly change the dynamic characteristics of frame shear wall structure, prolong the natural period of structure, has good isolation effect on the building structure.

【学位授予单位】：北京工业大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TU352.12

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