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水平双向压剪状态下铅芯叠层橡胶支座力学性能研究

DOI: 10.13197/j.eeev.2014.05.197.wangjq.025, PP. 197-203

Keywords: 铅芯叠层橡胶支座,力学性能,水平单向压剪,水平双向压剪

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Abstract:

建立了铅芯叠层橡胶支座的有限元模型,对支座在水平单向和双向压剪状态下的力学性能进行了研究,表明铅芯叠层橡胶支座在水平双向压剪状态下,由于水平双向受力的耦合效应,支座的耗能性能、屈服后刚度和水平等效刚度均有一定程度的降低,而支座的屈服力和等效阻尼比变化较小;水平双向压剪状态下,支座的最大水平剪应力明显增大,并且随着支座剪切变形的增大,其剪应力的增大幅度加大,使支座易由于承载力不足而发生破坏。因而,在设计时应考虑水平双向受力的耦合效应对铅芯叠层橡胶支座力学性能的影响。

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