大跨空间结构新型支座抗震性能研究

发布时间：2018-04-04 01:35

本文选题：大跨空间网壳结构　切入点：板式橡胶支座　出处：《兰州理工大学》2010年硕士论文

【摘要】： 大跨空间网壳结构因其造型优美,受力合理,结构灵活多样,机械化、工厂化程度高等特点,已经成为近年来发展较快的一种空间结构,在体育馆、会展中心、游泳池、餐厅、工业厂房等建筑中获得广泛应用。网壳结构的跨度越来越大,随着跨度的加大引起屋盖自重的增加,在曲面网壳结构设计中遇到的最大问题是大跨空间网壳结构具有很大的水平推力,下部结构往往难以承受。而且我国大部分地区处于地震区,需要考虑地震的影响,为此“如何减小大跨空间网壳结构地震反应”的问题显得尤为突出。近年来,随着高层建筑结构减震控制技术研究的深入,人们已经将这门技术应用到大跨空间网壳结构上,通常采用板式橡胶支座来解决以上问题。因此,对橡胶支座的水平刚度和抗震性能进行深入细致的研究有着非常重要的理论意义和工程实用价值。本文主要进行了以下工作： 1.’对工程中经常使用的板式橡胶支座,通过改变螺栓直径及个数、橡胶垫板的厚度和平面尺寸、螺栓非对称布置时的加载方向,对橡胶支座的水平刚度进行了分析。 2.利用ANSYS大型通用有限元分析软件对带螺栓板式橡胶支座的滞回性能进行了分析,并与普通橡胶支座、铅芯橡胶支座的滞回性能做了简单对比。 3.最后由带螺栓板式橡胶支座的滞回曲线得出其骨架曲线,并做了简单分析。结果表明：螺栓可以有效改善板式橡胶支座的水平刚度和滞回性能,使其滞回曲线较饱满,表现出较好的滞回性能和耗能能力。同时通过螺栓非对称布置时,不同加载方向对板式橡胶支座水平刚度的影响总结了螺栓的布置原则,为板式橡胶支座的设计提供可借鉴的依据。本文的研究内容及成果对板式橡胶支座在实际工程中的应用推广具有一定的理论和现实意义。
[Abstract]:Because of its beautiful shape, reasonable force, flexible structure, mechanization and high degree of factory, the large-span space reticulated shell structure has developed rapidly in recent years, in gymnasium, exhibition center, swimming pool, restaurant, etc.Industrial buildings and other buildings have been widely used.The span of latticed shell structure is getting larger and larger. With the increase of span, the weight of roof increases. The biggest problem encountered in the design of curved reticulated shell structure is the large horizontal thrust of long-span space latticed shell structure, which is often difficult to bear in the lower part of the structure.In addition, most areas in China are in the earthquake area, so the problem of "how to reduce the seismic response of large space reticulated shell structure" is especially prominent.In recent years, with the development of the research on shock absorption and control technology of high-rise building structure, people have applied this technology to the large-span space latticed shell structure, usually using the plate rubber bearing to solve the above problem.Therefore, it is of great theoretical significance and practical value to study the horizontal stiffness and seismic performance of rubber bearings.The main work of this paper is as follows:1'The horizontal stiffness of rubber bearing is analyzed by changing the diameter and number of bolts, the thickness and plane size of rubber pad, and the loading direction when bolts are unsymmetrical arranged.2.The hysteretic properties of rubber bearings with bolts and plates were analyzed by using ANSYS software, and the hysteretic properties of rubber bearings with bolts and lead rubber bearings were simply compared with those of common rubber bearings and lead rubber bearings.3.Finally, the skeleton curve is obtained from the hysteretic curve of the rubber bearing with bolt and plate, and a simple analysis is made.The results show that the bolt can effectively improve the horizontal stiffness and hysteretic performance of the plate rubber bearing, make the hysteretic curve fuller, and show better hysteretic performance and energy dissipation ability.At the same time, through the influence of different loading direction on horizontal stiffness of plate rubber bearing, the principle of bolt arrangement is summarized, which can be used as a reference for the design of plate rubber bearing.The research contents and results of this paper have certain theoretical and practical significance for the application and popularization of plate rubber bearings in practical engineering.
【学位授予单位】：兰州理工大学
【学位级别】：硕士
【学位授予年份】：2010
【分类号】：TU399

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