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牛宗胜

（北京市首发高速公路建设管理有限责任公司 ，北京 100071)

摘   要 ：基于 OpenSees 有限元软件构建深水高墩大跨连续刚构桥梁数值模型，考虑桥梁各构件的非线性特 性及深水动水作用的影响，研究桥梁在地震作用下的响应特性。结果表明：在深水环境中，引桥的桥墩动力响应会随着水深增加而降低，主桥的桥墩及过渡墩则呈现增加趋势；梁间及桥台间的碰撞次数在不同水深下变化不明显，但伸缩缝碰撞力随着水深的增加而显著增长。

关键词：深水环境 ；动水作用 ；非线性时程响应分析 ；碰撞效应 ；连续刚构桥梁

中图分类号：U448 . 23            

文献标志码：A            

文章编号： 1005- 8249  (2025)  02- 0151- 05 

DOI:10. 19860/j.cnki.issn1005 - 8249.2025 .02.025

 

NIU Zongsheng

(Beijing First Expressway Construction Management Co . ,  Ltd . ,  Beijing 100071 ,  China)

Abstract: A numerical model of a deepwater high-pier, long-span continuous rigid-frame bridge was constructed using OpenSees finite element software, with consideration given to the nonlinear characteristics of the bridge components and the impact of hydrodynamic action in deepwater. The response characteristics of the bridge under seismic action were investigated. The results indicate that in a deepwater environment, the dynamic response of the approach bridge piers decreases with increasing water depth, whereas the main bridge piers and transition piers exhibit an increasing trend. The collision frequency between beams and between bridge abutments shows no significant variation under different water depths. However, the collision force at the expansion joints significantly increases with the rise in water depth.

Key words: deep-water environment; hydrodynamic action; nonlinear time-history response analysis; collision effect; continuous rigid-frame bridge

作者简介： 牛宗胜  (1972—) ,   男 ，本科 ， 高级工程师 ，研 究方向：道路桥梁工程。

收稿日期：2023 - 05 - 30