东南大学学报（自然科学版）2025，Vol.55Issue(5)：1217-1227,11.DOI:10.3969/j.issn.1001-0505.2025.05.001
考虑桥面约束系统的跨断层简支梁桥模型试验研究
Model experiment study on simply-supported girder bridge across fault considering bridge deck restraint system
摘要
Abstract
To explore the influence of the bridge deck restraint system on the seismic performance of simply-supported girder bridge across fault,two 5-span simply-supported girder bridge models with and with-out bridge deck restraints were designed for comparative tests.Based on 1∶50 scale models,the composite ef-fect of fault dislocation and ground motion was simulated by a three-way loading system.The key parameters including pier displacement,girder acceleration and beam spacing variation were monitored to quantitatively analyze the influence of the bridge deck restraint system on the bridge dynamic responses.The experimental re-sults show that under the same working conditions,the dynamic responses of the main girder and pier of the simply-supported girder bridge with bridge deck constraints are significantly smaller than those without bridge deck constraints,and the constraint effect of the bridge deck constraints at the cross fault on the main girder is the most obvious.The bridge deck restraint system improves the overall structural stiffness of the multi-span simply-supported girder bridge and significantly reduces the dynamic responses of the main beam and the pier.The experimental data and conclusions can provide reference for the follow-up study of cross fault bridges and contribute to the seismic design of cross fault bridges in the future.关键词
跨断层简支梁桥/桥面约束系统/梁-轨相互作用/断层错动Key words
simply-supported girder bridge across fault/bridge deck restraint system/beam-rail interaction/fault dislocation分类
交通工程引用本文复制引用
谢礼立,刘秒,徐龙军,陈睿致..考虑桥面约束系统的跨断层简支梁桥模型试验研究[J].东南大学学报（自然科学版）,2025,55(5):1217-1227,11.基金项目
国家自然科学基金地震科学联合基金资助项目(U2139207) （U2139207）
湖北省自然科学基金(创新群体)重点资助项目(2023AFA030). （创新群体）
