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本文提出以双层油毡夹石墨粉作为基底摩擦减震层的建议。对两个6层带和不带减震基底的缩尺石膏模型进行的振动台对比试验结果表明,具有摩擦减震基底的结构具有显著的减震效果,可以有效地减低地震反应及上部结构震害,并防止了倒塌危险。另外,此种做法可较其他减震措施经济。本文对基底减震体系滑移摇摆的四种运动机制进行了分析,建立了弹性及弹塑性阶段的动力反应方程,并对水平地震波与竖向地震波的耦合作用进行了验算。通过综合分析,获得了减震多层砖结构在不同基底摩擦系数、不同地震烈度及不同场地类别时地震反应的相互关系,并对具有基底减震措施的多层住宅在地震中的失效概率进行了研究。文末对减震多层砖房设计中有关摩擦材料选择、上部结构及基础设计准则、建筑构造措施及滑移限位装置等提出了具体建议。
This paper proposes the proposal of using a double-layer linoleum-clad graphite powder as a base friction damping layer. The results of the shaking table comparison tests on the two-seater six-slab and non-stoichiometric plaster cast models show that the structure with friction damping base has a significant shock absorption effect, which can effectively reduce the seismic response and the upper structure earthquake Harm, and prevent the risk of collapse. In addition, this approach can be economical compared to other shock absorbers. In this paper, the four kinds of motion mechanisms of the base-slide system are analyzed. The dynamic response equations in the elastic and elastoplastic stages are established. The coupling of horizontal seismic waves and vertical seismic waves is checked. Through a comprehensive analysis, the relationship between seismic response of shock-absorbing multi-story brick structures with different base friction coefficients, earthquake intensity, and different site types was obtained, and the failure probability of multi-storey houses with basement damping measures in earthquakes was also investigated. Research. At the end of the paper, specific recommendations were made on the selection of friction materials, superstructure and foundation design criteria, building construction measures and slippage limit devices in the design of shock-absorbing multi-story brick houses.