可更换耗能波纹钢板拼装桥墩抗震性能试验

doi:10.13229/j.cnki.jdxbgxb.20241011

摘要/Abstract

摘要：

基于耗能集中和可更换的设计理念，提出了一种外置可更换波纹钢板-内嵌钢管榫卯的预制节段拼装桥墩结构形式。为研究节段拼装桥墩的可更换性能，设计了外置波纹钢板、外置开孔波纹钢板两组预制节段桥墩模型试件，一组直接采用拟静力往复加载试验；另一组先进行低周疲劳加载，更换耗能钢板后再进行拟静力破坏试验。通过对比两组桥墩的破坏过程、耗能能力、承载力等评估桥墩的抗震性能及可更换性能。研究结果表明：与外置波纹钢板相比，外置开孔波纹钢板与其预埋件的设计承载力更为匹配，虽然削弱了钢板的强度和刚度，但其耗能能力更优；因桥墩底部耗能主要集中于外置耗能钢板，试验前、后底部混凝土节段未出现压溃破坏；外置开孔波纹钢板桥墩在设计目标偏移率下具有良好的可更换性能。

关键词: 节段拼装桥墩, 波纹钢板, 拟静力试验, 可更换性, 滞回性能

Abstract:

Based on the concept of energy intensive and replaceable design， a segmental assembled pier with external replaceable corrugated steel plate and embedded steel pipe tenon and mortise is proposed. To verify the replaceability of prefabricated bridge piers， specimens with corrugated steel plates and perforated corrugated steel plates were designed and manufactured， respectively. The quasi-static cyclic loading test was carried out on one specimen. The fatigue loading test was conducted on the other one. After the test， the damaged corrugated steel plate was replaced by a new one， and then a quasi-static reciprocating loading test was conducted again. The seismic performance and replaceability of the pier were evaluated by comparison of the damage process， energy dissipation capacity， bearing capacity. The results show that external perforated corrugated steel plates have a better matching design bearing capacity with embedded parts compared with external corrugated steel plates. Although the strength and stiffness of the steel plate were reduced， the energy consumption capacity is better. Since the energy consumption of the bottom pier is mainly concentrated on the external corrugated steel plate， there is no crushing failure and damage of the bottom concrete section before and after the test. The external corrugated steel plate can achieve replaceable performance under the design target drift ratio.

Key words: precast assembled pier, corrugated steel plate, pseudo-static testing, replaceability, hysteretic behavior

中图分类号:

U443.22

金双双,周诗妤,万孝,周建庭. 可更换耗能波纹钢板拼装桥墩抗震性能试验[J]. 吉林大学学报(工学版), 2026, 56(3): 746-757.

Shuang-shuang JIN,Shi-yu ZHOU,Xiao WAN,Jian-ting ZHOU. Experiment on seismic performance of assembled piers with energy dissipation of replaceable corrugated steel plates[J]. Journal of Jilin University(Engineering and Technology Edition), 2026, 56(3): 746-757.

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试件	编号	竖向焊接开孔连接板厚度/mm		开孔L形连接件厚度/mm		钢管榫卯尺寸/mm		加载制度
试件	编号	承台	上部节段	承台	上部节段	长度	厚度	加载制度
1	-	10	5	15	15	100	2.5	滞回加载
2	1	10	5	18	18	100	2.5	疲劳加载
2	2	10	5	18	18	100	2.5	滞回加载

钢材	等级	直径或厚度/mm	屈服强度/MPa	极限强度/MPa
纵筋	HRB400	16	429	579
箍筋	HPB300	8	563	630
钢板	Q235	3.5	296.6	422.5