无构造柱退层式砖砌体结构振动台试验研究

发布时间：2018-04-13 02:37

本文选题：自建民居 + 振动台试验　；参考：《土木工程学报》2014年S2期

【摘要】：通过模拟地震振动台试验和非线性有限元分析,对一种自建典型民居(无构造柱退层式砖砌体结构)的抗震性能进行研究。结果表明:1此类结构能够承受峰值加速度为0.2g的地震作用;当峰值加速度达到并超过0.3g时,结构严重破坏,甚至倒塌;2结构第1层纵墙退层处的墙体以及第3层楼梯间和窗间墙破坏最为严重,为结构的薄弱部位,应考虑加固;3砌体结构的有限元模拟可采用整体连续模型。计算中通过定义材料的塑性应力-应变关系和损伤因子来模拟构件的非线性,从而实现模型的非线性分析,与试验结果的对比表明该方法的有效性。研究的结构形式在我国村镇广泛存在,因此研究成果适用于不同地区同等结构形式的自建民居抗震性能评价与加固改造。
[Abstract]:Based on the shaking table test and nonlinear finite element analysis, the aseismic behavior of a typical self-built residential building (brick-masonry structure with no structure column and back story) is studied.The results show that this kind of structure can withstand the earthquake with a peak acceleration of 0.2 g, and when the peak acceleration reaches or exceeds 0.3 g, the structure is severely damaged.The wall at the retreat of the first floor longitudinal wall and the wall between the staircases and windows on the third floor of the collapsed structure are most seriously damaged. As the weak part of the structure, the integral continuous model should be adopted in the finite element simulation of the strengthening of the masonry structure.In the calculation, the plastic stress-strain relation and damage factor of the material are defined to simulate the nonlinearity of the member, and the nonlinear analysis of the model is realized. The comparison with the experimental results shows that the method is effective.The structural form of the study is widely used in villages and towns in China, so the research results can be applied to the seismic performance evaluation and reinforcement of self-built houses in the same structure form in different areas.
【作者单位】：中国地震局地球物理研究所;北京工业大学工程抗震与结构诊治北京市重点实验室;
【基金】：自然科学基金(51108429) 基本科研业务专项(DQJB11C22) 科技支撑项目(2012BAK15B01)
【分类号】：TU364;TU352.11

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