附加可更换阻尼器装配式桥墩的抗震性能  

Seismic performance of prefabricated pier with replaceable damper

作　　者：张晶 申彦利[1,2] ZHANG Jing;SHEN Yanli(College of Civil Engineering,Hebei University of Engineering,Handan,Hebei 056038,P.R.China;Hebei Provincial Research Center of Assembly Structural Engineering Technology,Handan 056000,Hebei,P.R.China)

机构地区：[1]河北工程大学土木工程学院,河北邯郸056038 [2]河北省装配式结构工程技术研究中心,河北邯郸056000

出　　处：《重庆大学学报》2023年第2期98-106,共9页Journal of Chongqing University

基　　金：国家自然科学基金资助项目(51378169);河北省高等学校科学技术研究重点项(ZD2016147)。

摘　　要：为减轻灌浆套筒装配式桥墩的地震损伤,尽快恢复震后桥墩使用功能,在常规灌浆套筒装配式桥墩的基础上,提出一种在桥墩墩底连接处设置可更换阻尼器的改进方案。采用数值模拟方法对常规灌浆套筒装配式桥墩和附加阻尼器灌浆套筒装配式桥墩进行对比分析,研究附加可更换阻尼器装配式桥墩的抗震性能。结果表明,灌浆套筒装配式桥墩安装可更换阻尼器后,水平承载力提高了10%,累积耗能提高了27%,桥墩墩底连接处的损伤减轻,其中最大残余位移减少了19%,桥墩抗震性能提高,对桥梁韧性抗震研究具有一定参考意义。In order to reduce the plastic seismic damage of prefabricated pier with grouting sleeve and resume the function of the pier in a timely manner, the concept of the prefabricated pier with grouting sleeve and replaceable damper was proposed. A conventional prefabricated pier with grouting sleeve and a pier with grouting sleeve and replaceable damper were analyzed using numerical modeling method. Two models were established to compare the seismic performance between the conventional pier and the bridge pier with replaceable damper. The result shows that the horizontal bearing capacity and cumulative energy dissipation of the prefabricated pier with replaceable damper are 10% and 27% higher than conventional bridge pier, respectively. The maximum residual displacement of the prefabricated pier with replaceable damper decreases by 19%. The damper can effectively control the structural dynamic responses, reducing the prefabricated pier damage.

关 键 词：可更换阻尼器 灌浆套筒 装配式桥墩 抗震性能 有限元分析 

分 类 号：U448.213[建筑科学—桥梁与隧道工程]