何文福, 侯雨晴, 潘宁, 刘文燕, 方贝舒. 摩擦曲面隔震结构动力学模型及地震响应分析[J]. 工程力学, 2021, 38(8): 111-120. DOI: 10.6052/j.issn.1000-4750.2020.08.0551
引用本文: 何文福, 侯雨晴, 潘宁, 刘文燕, 方贝舒. 摩擦曲面隔震结构动力学模型及地震响应分析[J]. 工程力学, 2021, 38(8): 111-120. DOI: 10.6052/j.issn.1000-4750.2020.08.0551
HE Wen-fu, HOU Yu-qing, PAN Ning, LIU Wen-yan, FANG Bei-shu. DYNAMIC MODEL AND SEISMIC RESPONSE ANALYSIS OF FRICTION SURFACE ISOLATION STRUCTURES[J]. Engineering Mechanics, 2021, 38(8): 111-120. DOI: 10.6052/j.issn.1000-4750.2020.08.0551
Citation: HE Wen-fu, HOU Yu-qing, PAN Ning, LIU Wen-yan, FANG Bei-shu. DYNAMIC MODEL AND SEISMIC RESPONSE ANALYSIS OF FRICTION SURFACE ISOLATION STRUCTURES[J]. Engineering Mechanics, 2021, 38(8): 111-120. DOI: 10.6052/j.issn.1000-4750.2020.08.0551

摩擦曲面隔震结构动力学模型及地震响应分析

DYNAMIC MODEL AND SEISMIC RESPONSE ANALYSIS OF FRICTION SURFACE ISOLATION STRUCTURES

  • 摘要: 针对强震下摩擦滑移隔震系统位移较大且震后存在较大残余变形的现象,提出了一种摩擦曲面隔震结构体系,在地震作用和结构重力作用下上部结构绕隔震层曲率中心做往复滑移运动。建立了摩擦曲面结构的简化单质点双支座力学模型,基于模型的运动方程得到了支座轴力的表达式及其参数相关关系。完成了钢筋混凝土框架剪力墙结构模型的地震模拟振动台试验,试验结果表明摩擦曲面隔震结构相比于平面摩擦滑移结构,上部结构加速度略有增大,但在控制隔震层位移及支座应力方面具有更优的效果。进行了振动台试验的数值模拟,通过试验结果对比验证了正确性,并通过数值模拟分析了曲率半径和隔震层摩擦系数对结构响应的影响。

     

    Abstract: In view of the large displacement and residual deformation of friction-slip isolation systems under strong earthquakes, we propose a friction surface isolation structural system, in which the superstructure moves reciprocally around the curvature center of the isolation layer under earthquakes and gravity. A simplified single-point double-mount editing mechanical model of the friction surface structure is established. The expression of the bearing axial force and its parameter correlation are obtained based on the equation of motion. The shake table test of a reinforced concrete frame shear wall structure model was completed. The experimental results show that the acceleration response of the friction surface isolation structure is slightly increased compared with that of plane friction slip structures, but it has better effect in controlling the displacement of the barrier layer and bearing stress of the isolation layer. The numerical simulation of the shake table test was carried out. The correctness was verified by comparison of the test results. The effect of the curvature radius and the coefficient of friction of the isolation layer on the structural response was analyzed by numerical simulation.

     

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