新型耗能防落梁装置研发及其效应研究  

Development of a new-type anti-seismic device and study of its effect

作　　者：李雪红[1] 李文琳 顾以明[1] 王蕊[1] 徐秀丽[1] LI Xuehong;LI Wenlin;GU Yiming;WANG Rui;XU Xiuli(School of Architecture and Construction, Nanjing Tech University, Nanjing 211816,China)

机构地区：[1]南京工业大学土木工程学院

出　　处：《中国安全科学学报》2018年第2期139-144,共6页China Safety Science Journal

基　　金：江苏省六大人才高峰项目(2014-JZ-006);江苏省科技支撑计划项目(BE2014716);江苏省科技计划项目(BY2016005-12)

摘　　要：为提高混凝土梁式桥的整体抗震性能,研发一种具有耗能、限位双重作用的新型防落梁装置。首先,结合连梁装置的设计思想,将E形钢板与连接钢板相组合,通过设置合理的不工作长度和最大工作长度设计该装置,并试验研究其耗能能力;然后,将装置用于一座混凝土连续梁桥,对比分析设置装置前后墩（台）梁相对位移、墩底剪力等参数,并分析装置在地震作用下的受力及耗能。结果表明：新型耗能防落梁装置滞回曲线形状饱满,有很好的耗能能力;设置该装置能有效降低桥梁的地震响应,其中墩（台）梁相对位移减小60%左右,非过渡墩墩底剪力减小40%左右。For the sake of improving the overall seismic performance of concrete beam bridges,a newtype anti-seismic device having functions of energy consuming and position limitation was developed.According to the design idea of the coupling beam device,the E-shaped steel plates and the connecting steel plates were assembled,and a reasonable non-working length and a maximum working length were set.A new energy-dissipating anti-seismic device was developed to achieve the multi-level seismic performance of bridges. The energy-saving capacity was studied. This method was applied to a concrete continuous girder bridge. The effects of the device on the relative displacements of the piers（ beams） and the shearing force acting on the pier bottom were studied. The stress state and energy consumption of the device under the earthquake were examined. The results show that the shape of the hysteresis curve of the energy-dissipating anti-seismic device is plump and the device has a good energy consumption capacity,that the device can effectively reduce the seismic response of bridges,that the relative displacement of piers（ beams） is reduced by about 60%,and that the non-transition pier shearing is reduced by about 40%.

关 键 词：防落梁装置 耗能 试验研究 地震响应 抗震性能 

分 类 号：X913.4[环境科学与工程—安全科学]