钢隔震墩框架振动台试验研究  

Shaking table experimental research on steel isolation pier in frame

作　　者：尚守平[1] 罗惟贤 王振[1] 肖逸夫 SHANG Shouping;LUO Weixian;WANG Zhen;XIAO Yifu(College of Civil Engineering,Hunan University,Changsha 410082,China)

机构地区：[1]湖南大学土木工程学院

出　　处：《铁道科学与工程学报》2019年第8期2043-2051,共9页Journal of Railway Science and Engineering

基　　金：国家“十二五”科技支撑计划资助项目(2015BAL03B01)

摘　　要：针对广大村镇地区多层框架房屋抗震需求的现状,根据隔震理论,提出一种新型钢隔震墩。以2层钢筋混凝土框架结构为研究对象,采用新型钢隔震墩作为框架结构隔震装置,进行地震模拟振动台试验。通过在振动台台面及各层楼板布置拾振器测得各部分加速度及位移时程关系,分析上部框架结构地震反应及隔震墩的隔震性能。研究结果表明:在不同加速度峰值的地震波输入下,框架一层底板输出的加速度峰值较台面输入加速度峰值降低约50%~75%,2层顶板与1层底板的相对位移最大值为0.90mm。向钢隔震墩内灌注沥青油膏后,上部框架层间位移进一步减小。钢隔震墩用于框架结构时隔震效果显著。In view of the demand of seismic capacity of multi-layer frame houses in village areas.A new type of steel isolation pier was proposed according to the theory of isolation.This article took a two-layer reinforced concrete frame as the research objectand adopted the new steel isolation pier as the isolation layer in the shaking table test.The acceleration and displacement amplitudes of each part which were used to analyze the structural response and the isolation performance of the isolation pier were measured by sensors on shaking table and each floor.The results show that under the input of seismic waves with different peak acceleration,the peak output acceleration of the first floor is reduced by about 50%~75% compared with the peak input acceleration of the shaking table.The maximum displacement of the second floor and the first floor is 0.90 mm.After the asphalt ointment is poured into steel isolation piers,the displacement between the upper frame layers is further reduced.When steel isolation piers are used for the frame structure,the vibration isolation effect is remarkable.

关 键 词：钢筋混凝土框架 钢隔震墩 地震模拟振动台试验 隔震效果 

分 类 号：TU352[建筑科学—结构工程]