桥梁限位型减隔震支座试验及其参数敏感性分析

发布时间：2018-05-04 08:16

本文选题：减隔震支座 + 位移限制　；参考：《哈尔滨工程大学学报》2017年07期

【摘要】：为了将限位功能集成于普通支座,简化设计和施工过程,提高经济性能,提出一种具有限位功能的新型减隔震支座。新支座通过外加支座底盆限制位移,通过高阻尼橡胶块缓冲限位冲击力、提供自复位刚度和一定的耗能功能;将地震易损部件模块化,方便震后修复。足尺模型拟静力试验和参数敏感性分析结果表明,其减隔震和限位功能符合预期。摩擦系数越大,墩梁相对位移和桥墩剪力越小;橡胶块的缓冲刚度越大,剪力越大但位移越小;橡胶块的缓冲刚度和支座滑动间隙取值需综合考虑位移和剪力的影响。
[Abstract]:In order to integrate the limited function into the ordinary bearing, simplify the design and construction process, and improve the economic performance, a new type of shock isolation support with limited function is proposed. The new support limits the displacement through the external support bottom basin, provides the self-reset stiffness and certain energy dissipation function through the high damping rubber block buffer limited impact force, modularizes the seismic vulnerable parts, facilitates the post-earthquake repair. The results of pseudo-static test and parameter sensitivity analysis of full-scale model show that the shock isolation and limit function are in line with the expectation. The larger the friction coefficient, the smaller the relative displacement of pier beam and the shear force of pier; the greater the cushion stiffness of rubber block is, the greater the shear force is, but the smaller the displacement is, and the influence of displacement and shear force on the cushion stiffness of rubber block and sliding clearance of bearing should be considered comprehensively.
【作者单位】：河北省土木工程诊断改造与抗灾重点实验室;石家庄铁道大学土木工程学院;石家庄铁道大学河北省大型结构健康诊断与控制重点实验室;河北省减隔震技术与装置工程技术研究中心;
【基金】：国家自然科学基金项目(51508351、U1334209) 中国博士后科学基金项目(2016M601278) 河北省自然科学基金项目(E2017210117) 河北省土木工程诊断、改造与抗灾重点实验室开放课题
【分类号】：U442.55

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