中空夹层预制装配式桥墩的抗震性能

doi:10.6040/j.issn.1672-3961.0.2021.562

山东大学学报 (工学版) ›› 2022, Vol. 52 ›› Issue (4): 191-200.doi: 10.6040/j.issn.1672-3961.0.2021.562

• • 上一篇

中空夹层预制装配式桥墩的抗震性能

付涛¹,朱志鑫¹,孟凌霄²,孙中华³,朱经纬^1*

1. 山东建筑大学交通工程学院, 山东济南 250101;2. 中国建设基础设施有限公司, 北京 100044;3. 中建八局第一建设有限公司, 山东济南 250102

发布日期:2022-08-24
作者简介:付涛(1981— ),男,山东潍坊人,副教授,博士,主要研究方向为桥梁结构理论和桥梁船撞. E-mail:greenvillage_17@163.com. *通信作者简介:朱经纬(1986— ),男,黑龙江齐齐哈尔人,副教授,博士,主要研究方向为钢与组合结构桥梁. E-mail:zhujingweicadx@126.com
基金资助:
中建基础科技研发资助项目(CSCIC-2020-KT-05);国家自然科学基金资助项目(51408339);山东省自然科学基金资助项目(ZR2021ME227);山东省研究生教育质量提升计划资助项目(SDYAL19110);山东省高等学校科技计划资助项目(J18KA216)

The seismic performance of prefabricated pier with a hollow interlayer

FU Tao¹, ZHU Zhixin¹, MENG Lingxiao², SUN Zhonghua³, ZHU Jingwei^1*

1.School of Transportation Engineering, Shandong Jianzhu University, Jinan 250101, Shandong, China;
2. China State Construction Infrastructure Corporation, Beijing 100044, China;
3. The First Company, China Eighth Engineering Bureau Ltd, Jinan 250102, Shandong, China

Published:2022-08-24

摘要/Abstract

摘要： 提出一种中空夹层预制装配式桥墩,设计基于灌浆套筒连接的中空夹层预制装配式桥墩试件,采用拟静力试验对其抗震性能进行研究。研究结果表明:在低周循环往复荷载作用下,中空夹层预制装配式桥墩荷载-位移滞回曲线较为饱满,加载后期均出现较明显的捏拢效应,水平承载力峰值与普通装配式桥墩相当;预埋中空钢管使新型中空夹层预制装配式桥墩的屈服位移、屈服荷载较普通预制装配式桥墩分别提高8.3%和3.7%,墩身初始切线刚度减小约6.4%,增大了加载初期的墩身柔度,有利于桥墩耗能;在低周循环往复荷载作用下,中空夹层预制装配式桥墩墩身曲率在墩底接缝及刚度变化截面具有较为明显的突变,与普通预制装配式桥墩类似,中空夹层预制装配式桥墩和普通预制装配式桥墩主要受力纵筋最终均接近或达到屈服,塑性铰区上移明显;对比两类桥墩耗能曲线、刚度退化曲线和残余位移曲线,中空夹层预制装配式桥墩最终耗能曲线峰值较普通装配式桥墩提高约22%,刚度退化趋势基本一致,在达到屈服位移后有更大的残余位移,墩身变形能力较普通预制装配式桥墩更好。中空夹层预制装配式桥墩可充分发挥钢管变形能力强、刚度退化慢等优势,墩身钢筋混凝土与中空钢管协同工作,共同承受荷载,减轻墩身质量的同时表现出良好的抗震性能。

关键词: 预制装配式桥墩, 抗震性能, 拟静力试验, 滞回耗能, 中空夹层

中图分类号:

TU997

付涛,朱志鑫,孟凌霄,孙中华,朱经纬. 中空夹层预制装配式桥墩的抗震性能[J]. 山东大学学报 (工学版), 2022, 52(4): 191-200.

FU Tao, ZHU Zhixin, MENG Lingxiao, SUN Zhonghua, ZHU Jingwei. The seismic performance of prefabricated pier with a hollow interlayer[J]. Journal of Shandong University(Engineering Science), 2022, 52(4): 191-200.

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中空夹层预制装配式桥墩的抗震性能

The seismic performance of prefabricated pier with a hollow interlayer

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