新型滑移隔震装置减震性能有限元分析

发布时间：2018-03-13 19:31

本文选题：二硫化钼　切入点：竖向地震　出处：《四川建筑科学研究》2016年06期 　论文类型：期刊论文

【摘要】：基于二硫化钼材料的低摩擦系数、高磨损寿命和润滑性能可靠等优点,以软钢实体圆锥棒作为限位消能元件,设计制作了一种新型滑移隔震装置。采用MTS电液伺服试验系统测试了滑移隔震支座的摩擦性能,并建立了1个1∶5的5层框架结构的ABAQUS有限元模型,分析了不同摩擦系数和竖向地震激励下结构体系的动力反应。结果表明:设计的新型滑移隔震支座摩擦系数曲线较为平缓,且随着试验次数的增加,摩擦系数逐渐减小,最终稳定在0.04~0.05,二硫化钼材料的摩擦性能稳定、摩擦系数低,可以作为建筑摩擦滑移隔震系统中的滑移材料。随着摩擦系数的增大,结构的加速度反应增大,而相对位移却不断减小,较小的摩擦系数使上部结构偏于安全,但隔震层会产生较大的位移。相比X向单向地震,在竖向地震作用下结构的加速度反应和位移反应都有所增大,但其增大幅度都不超过10%,表明在竖向地震荷载作用下,滑移隔震技术依然有效。
[Abstract]:Based on the advantages of low friction coefficient, high wear life and reliable lubrication performance of molybdenum disulfide material, the soft steel solid cone rod is used as the limited energy dissipation element. A new sliding isolation device is designed and manufactured. The friction performance of sliding isolation bearing is tested by MTS electro-hydraulic servo test system, and the ABAQUS finite element model of a 1: 5 five-story frame structure is established. The dynamic response of the structure system under different friction coefficients and vertical earthquake excitation is analyzed. The results show that the friction coefficient curve of the new sliding isolation bearing is relatively smooth, and the friction coefficient decreases gradually with the increase of test times. The final stability is 0.04 ~ 0.05. The friction property of molybdenum disulfide is stable and the friction coefficient is low. It can be used as slip material in building friction and slip isolation system. With the increase of friction coefficient, the acceleration response of the structure increases. However, the relative displacement decreases continuously, the smaller friction coefficient makes the superstructure more safe, but the isolated layer produces larger displacement. Compared with the X direction unidirectional earthquake, the acceleration response and displacement response of the structure under vertical earthquake are increased. However, the amplitude of the increase is not more than 10, which indicates that the sliding isolation technique is still effective under the vertical seismic load.
【作者单位】：宁夏建设职业技术学院;西安建筑科技大学土木工程学院;
【基金】：国家自然科学基金资助项目(51178388) 陕西省教育厅专项(14JK1420)
【分类号】：TU352.12

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