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浙江大学学报(工学版)
浙江大学学报(工学版)  2023, Vol. 57 Issue (5): 977-987    DOI: 10.3785/j.issn.1008-973X.2023.05.014
土木与交通工程     
带耗能系梁的摇摆自复位双肢薄壁高墩抗震性能研究
佘振扬1(),黎雅乐2,*(),李雪红1,徐秀丽1,刘径恺1
1. 南京工业大学 土木工程学院，江苏 南京 211816
2. 江苏开放大学 建筑工程学院，江苏 南京 210036
Investigation on seismic performance of thin-walled high piers with rocking self-centering double-limb with energy-consuming tie beam
Zhen-yang SHE1(),Ya-le LI2,*(),Xue-hong LI1,Xiu-li XU1,Jing-kai LIU1
1. School of Civil Engineering, Nanjing Tech University, Nanjing 211816, China
2. School of Building Engineering, Jiangsu Open University, Nanjing 210036, China
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摘要：

探索适用于山区连续刚构桥双肢薄壁高墩的摇摆自复位体系，设计和制作了混凝土双肢薄壁高墩(RCDTP)和带耗能系梁的摇摆自复位双肢薄壁高墩(RSDTP)构件. 开展双肢薄壁墩的拟静力试验，研究破坏形态、滞回特性、骨架曲线、耗能能力、延性和残余位移等. 与RCDTP墩进行比较，结果表明耗能系梁的设置和摇摆体系的设计能够显著提高墩柱抗震性能、减轻损伤程度. RSDTP墩极限承载力、延性系数、耗能能力分别提高了51.4%、12.31%、42%，RSDTP墩的残余位移降低了24%. 预应力钢筋的设置为桥墩提供了自复位能力，有效地控制桥墩的震后残余位移，保障了双肢高墩的震后可恢复性.
关键词： 抗震性能;  拟静力试验;  摇摆自复位桥墩;  耗能系梁;  薄壁双肢高墩    
Abstract:

The reinforced concrete double-limb thin-walled high piers (RCDTP) and the rocking self-centering double-limb thin-walled high piers (RSDTP) with energy-consuming tie beams were designed and fabricated to explore the swing self-reset system applicable to the double-leg thin-walled high piers of continuous rigid frame bridges in mountainous areas. Quasistatic tests were conducted to study the failure patterns, hysteretic characteristics, skeleton curves, energy dissipation capacity, ductility, residual displacement. Compared with those of the RCDTP piers, the results showed that the setting of energy-consuming tie beam and the design of rocking system could significantly improve the seismic performance and reduce the damage. The ultimate bearing capacity, ductility and energy dissipation capacity of RSDTP piers increased by 51.4%, 12.3% and 42.0% respectively. The residual displacement of the RSDTP piers was reduced by 24%. The prestressing tendons provide the self-centering capacity, effectively control residual displacement and guarantee the post-earthquake repair capacity.
Key words: aseismic performance    quasi-static test    rocking self-centering bridge column    energy-consuming tie beam    double-limb thin-walled high pier
收稿日期: 2022-08-02 出版日期: 2023-05-09
CLC:  U 448.23  
基金资助: 国家自然科学基金资助项目（52008187）；2021年江苏高校“青蓝工程”资助项目
通讯作者: 黎雅乐     E-mail: yyzqshezhenyang@163.com;liyl@jsou.edu.cn
作者简介: 佘振扬（1998—），男，硕士生，从事桥梁抗震研究. orcid.org/0000-0002-9373-9933. E-mail： yyzqshezhenyang@163.com
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佘振扬
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引用本文:

佘振扬,黎雅乐,李雪红,徐秀丽,刘径恺. 带耗能系梁的摇摆自复位双肢薄壁高墩抗震性能研究[J]. 浙江大学学报(工学版), 2023, 57(5): 977-987.

Zhen-yang SHE,Ya-le LI,Xue-hong LI,Xiu-li XU,Jing-kai LIU. Investigation on seismic performance of thin-walled high piers with rocking self-centering double-limb with energy-consuming tie beam. Journal of ZheJiang University (Engineering Science), 2023, 57(5): 977-987.

链接本文:

https://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2023.05.014    或    https://www.zjujournals.com/eng/CN/Y2023/V57/I5/977

图 1  试件0和1的立面和截面
图 2  耗能系梁阻尼器示意图
图 3  拟静力试验加载及装置示意图
图 4  测点布置及受压区高度测量示意图
图 5  在加载位移110mm时试件0的破坏形态
图 6  在加载位移110mm时试件1的破坏形态
图 7  试件0和1的滞回曲线
图 8  试件0和1的骨架曲线
图 9  试件0和1的等效黏滞阻尼系数-位移延性变化曲线
图 10  试件0和1的规格化累计滞回耗能系数-位移延性变化曲线
图 11  试件0和1的残余位移-水平位移变化曲线
图 12  试件0和1的弯矩-曲率关系示意图
图 13  试件预应力增量分析模型示意图
图 14  文献中预应力增量比较曲线
图 15  墩底受压区高度随墩顶水平位移的变化曲线
图 16  公式修正后预应力增量比较曲线
图 17  试验-数值滞回曲线与骨架曲线的对比
图 18  不同参数下滞回曲线与骨架曲线的对比
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