砂—橡胶粒隔震垫层1:8框架结构模型振动台试验研究

发布时间：2018-02-06 02:40

本文关键词： 村镇建筑砂-橡胶粒垫层振动台地震波模型试验　出处：《安徽理工大学》2017年硕士论文　论文类型：学位论文

【摘要】：地震是危及人类生命财产安全,且具有毁灭性的突发式自然灾害,目前,人类对地震震源机制以及地震监测研究还不完善,难以准确预测地震的发生,因此,预防地震、抗震减灾成为地震工作者迫切需要解决的课题。从地理位置上看,我国处于和地中海-喜马拉雅地震带和西太平洋地震带之间,是一个地震多发的国家[1]。历史资料显示,在过去四千年的历史里,除了浙江省和江西省之外,绝大部分地区都遭受过地震的危害。结合最近几次大地震,如汶川、玉树等大地震的震害和经验,地震对经济较为落后广大村镇地区房屋的破坏尤为严重。为此研究一种针对村镇建筑,取材广泛、经济适用、操作可行的隔震措施具有较高的现实意义。传统的抗震措施是通过提高建筑结构自身材料强度和塑性变形能力以抵抗地震,来保证结构的抗震安全性,随着新科技、新技术的不断引用,出现了各种新型隔减震措施。本文针对我国广大村镇低矮房屋,提出一种取材广泛、经济适用、操作可行的隔震材料,在建筑物地基和基础之间铺着一定厚度的砂-橡胶粒隔震垫层,地震时,剪切变形主要发生在垫层部分,消耗吸收地震能量[2],减少上部结构所能接收到的地震能量,为此进行了 1:8框架结构振动台模型试验。振动台试验表明,在地震发生时,模型基础与砂-橡胶粒隔震垫层有很明显的相对滑动位移,地震波在0.1～0.4g时减震效果明显,有效改善了结构的动力特性,这表明砂-橡胶粒隔震垫层阻碍了地震能量向上部结构的传递,因而具有一定的减震效果,垫层位于地基和建筑物基础之间,施工简单,且成本较低。本文通过振动台模型试验,研究砂-橡胶粒隔震垫层在不同强度地震波下的滑移隔震效果,对今后在工程上推广使用砂-橡胶粒隔震垫层提供一定的依据。
[Abstract]:The earthquake is endangering the safety of human life and property, and has the sudden natural disasters, destruction of human at present, earthquake focal mechanism and earthquake monitoring research is still not perfect, it is difficult to accurately predict the occurrence of earthquakes, therefore, the prevention of earthquake, earthquake disaster earthquake workers become an urgent task. Geographically, China in between and the Mediterranean - Himalaya earthquake belt and the Western Pacific seismic belt, is an earthquake prone country [1]. historical data show that in the past four thousand years, in addition to Zhejiang province and Jiangxi Province, most regions have suffered from earthquake hazards. Combined with the recent earthquakes, such as Wenchuan, Yushu large earthquake damage and earthquake on the economy is relatively backward, the vast rural area housing damage is particularly serious. Therefore the research for the village construction, widespread, affordable, operation Practical significance of isolation measures is higher. The traditional seismic measures is to improve building structure materials through strength and plastic deformation ability to resist earthquake, to ensure the seismic safety of the structure, with the new technology, continue to refer to the new technology, the emergence of a variety of new type damping measures. According to our village low rise buildings, put forward a kind of widespread, affordable, practical isolation material, between the building foundation and foundation with a certain thickness of sand cushion isolation rubber particle, earthquake, shear deformation mainly occurred in the cushion part, absorb seismic energy consumption [2], reduce the seismic energy of upper structure can be received. The 1:8 frame structure model shaking table test was performed. Shaking table test results show that when the earthquake occurred, the model foundation and sand cushion isolation rubber particle has obvious phase of sliding displacement, The seismic wave in 0.1 ~ 0.4g when the damping effect is obvious, can effectively improve the dynamic characteristics of the structure, which indicates that the sand cushion isolation rubber particle hinders the seismic response of the superstructure, thus has the damping effect of the cushion is located between the foundation and the building of simple construction, and low cost. This paper through the shaking table model test, sliding effect of sand cushion isolation of rubber particles in different intensity of earthquake wave, to promote the use of sand cushion isolation rubber particles provide a basis in engineering in the future.

【学位授予单位】：安徽理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TU352.12

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