不同轴压比下低剪跨比插槽式管墩抗震性能研究

doi:10.3969/j.issn.1674-0696.2022.03.10

重庆交通大学学报（自然科学版） ›› 2022, Vol. 41 ›› Issue (03): 65-71.DOI: 10.3969/j.issn.1674-0696.2022.03.10

不同轴压比下低剪跨比插槽式管墩抗震性能研究

王国清1，苏思博2，贾献卓2，李志聪3

(1. 河北工业大学土木与交通学院，天津 300401； 2. 北京工业大学城市与工程安全减灾教育部重点实验室，北京 100124； 3.河北省交通规划设计院，河北石家庄 053001)

收稿日期:2020-06-22 修回日期:2020-10-20 发布日期:2022-03-24
作者简介:王国清(1966—)，男，河北石家庄人，教授，博士，主要从事桥梁结构方面的研究。E-mail:wanggq98@163.com 通信作者：苏思博(1994—)，男，河北石家庄人，博士研究生，主要从事桥梁抗震方面的研究。E-mail:645006713@qq.com

Seismic Performance of Slot Type Pipe Pier with Low Shear Span Ratio under Different Axial Compression Ratio

WANG Guoqing1, SU Sibo1, JIA Xianzhuo2, LI Zhicong3

(1. School of Civil Engineering and Transportation, Hebei University of Technology, Tianjin 300401, China; 2.Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education, Beijing University of Technology, Beijing 100124, China; 3. Hebei Transportation Planning and Design Institute, Shijiazhuang 053001, Hebei, China)

Received:2020-06-22 Revised:2020-10-20 Published:2022-03-24

摘要/Abstract

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。

关键词: 桥梁工程；插槽式；抗震性能；轴压比；数值模拟

Abstract: 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.

Key words: bridge engineering; slot type; seismic performance; axial compression ratio; numerical simulation

中图分类号:

U443.22

王国清1，苏思博2，贾献卓2，李志聪3. 不同轴压比下低剪跨比插槽式管墩抗震性能研究[J]. 重庆交通大学学报（自然科学版）, 2022, 41(03): 65-71.

WANG Guoqing1, SU Sibo1, JIA Xianzhuo2, LI Zhicong3. Seismic Performance of Slot Type Pipe Pier with Low Shear Span Ratio under Different Axial Compression Ratio[J]. Journal of Chongqing Jiaotong University(Natural Science), 2022, 41(03): 65-71.

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不同轴压比下低剪跨比插槽式管墩抗震性能研究

Seismic Performance of Slot Type Pipe Pier with Low Shear Span Ratio under Different Axial Compression Ratio

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