多维地震动作用下应用摩擦摆支座K8型单层球面网壳结构抗震性能研究  

Research on seismic performance of K8 single-layer reticulated shells with FPB under multi-dimensional ground motions

作　　者：孔德文[1,2] 范峰[1,2] 支旭东[1,2] 孙梦涵[1,2] 

机构地区：[1]结构工程灾变与控制教育部重点实验室(哈尔滨工业大学),黑龙江哈尔滨150090 [2]哈尔滨工业大学土木工程学院,黑龙江哈尔滨150090

出　　处：《地震工程与工程振动》2014年第4期195-200,共6页Earthquake Engineering and Engineering Dynamics

基　　金：国家自然科学基金重大计划集成项目(91315301);国家自然科学基金面上项目(51278152);黑龙江省杰出青年科学基金资助课题(JQ2010-10)

摘　　要：将摩擦摆支座(FPB)应用到K8型单层球面网壳结构中,分析了摩擦摆支座的隔震机理,给出了结构的动力方程,并对多维地震动作用下应用铰支座和摩擦摆支座单层球面网壳结构进行动力时程分析。从杆件动应力、节点相对位移和加速度三个方面研究摩擦摆支座对网壳结构动力性能的影响,讨论了多维地震动作用下摩擦摆支座对单层球面网壳抗震性能的影响规律。结果表明,多维地震动作用下,应用摩擦摆支座K8型单层球面网壳结构具有显著的隔震效果,而且随着地震动强度的增加,结构的抗震性能增强。Friction pendulum bearings （FPB） were applied to K8 single-layer reticulated shells and isolation mechanism of friction pendulum bearings were analyzed and the dynamic equation of structure was given. Single-layer reticulated shells with hinge bearings or friction pendulum bearings were analyzed by dynamic time history analysis. Structures were also researched from three aspects including the dynamic stress of bars, acceleration and relative displacement of nodes under dynamic loading. The impact of FPBs on the seismic performance of single layer latticed shells was discussed. The results show that the seismic performance of K8 single-layer reticulated shells with FPBs is high under the multi-dimensional ground motions, while isolation effect of FPBs gradually increases with the increase of ground motion intensity.

关 键 词：单层球面网壳 摩擦摆支座 隔震 抗震性能 多维地震 

分 类 号：TU311.3[建筑科学—结构工程]