摘要
针对插槽式连接预制桥墩的抗震性能,基于荣乌新线高速公路某桥梁工程,采用ABAQUS有限元分析软件对不同轴压比的插槽式连接桥墩进行数值仿真分析,重点分析了3种桥墩模型的承载能力、延性性能、滞回特性、骨架曲线、刚度退化以及耗能能力,设计并制作了插槽式连接预制灌芯管墩试件,并采用拟静力试验对构件进行验证。分析结果发现:低剪跨比的插槽式管墩破坏形式均为剪切破坏。随着轴压比的增加,其承载力逐渐提高,但管墩承载力失效的速度也越来越快,延性系数逐渐降低,刚度逐渐增大,耗能能力逐渐增强,低剪跨比插槽式管墩的轴压比在0.2左右时具有较好的抗震性能。
For the seismic performance of slot connected precast piers,based on a bridge project of Rongwu Xinxian expressway,ABAQUS finite element analysis software was used to conduct numerical simulation analysis on slot connected piers with different axial compression ratio.The bearing capacity,ductility,hysteretic characteristics,skeleton curve,stiffness degradation and energy dissipation capacity of the three kinds of pier models were focused and analyzed.The test pieces of slot connection precast core filling pipe pier were designed and manufactured,and the components were verified by quasi-static test.The analysis results show that the failure mode of slotted pipe pier with low shear span ratio is shear failure.With the increase of axial compression ratio,its bearing capacity increases gradually,but the failure rate of pipe pier bearing capacity is faster and faster,the ductility coefficient decreases gradually,the stiffness increases gradually,and the energy dissipation capacity increases gradually.The slotted pipe pier with low shear span ratio has good seismic performance when the axial compression ratio is about 0.2.
作者
王国清
苏思博
贾献卓
李志聪
WANG Guoqing;SU Sibo;JIA Xianzhuo;LI Zhicong(School of Civil Engineering and Transportation,Hebei University of Technology,Tianjin 300401,China;Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education,Beijing University of Technology,Beijing 100124,China;Hebei Transportation Planning and Design Institute,Shijiazhuang 053001,Hebei,China)
出处
《重庆交通大学学报（自然科学版）》
CAS
CSCD
北大核心
2022年第3期65-71,共7页
Journal of Chongqing Jiaotong University(Natural Science)
关键词
桥梁工程
插槽式
抗震性能
轴压比
数值模拟
bridge engineering
slot type
seismic performance
axial compression ratio
numerical simulation
