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牛宗勝

（北京市首發高速公路建設管理有限責任公司 ，北京 100071)

摘   要 ：基于 OpenSees 有限元軟件構建深水高墩大跨連續剛構橋梁數值模型，考慮橋梁各構件的非線性特 性及深水動水作用的影響，研究橋梁在地震作用下的響應特性。結果表明：在深水環境中，引橋的橋墩動力響應會隨著水深增加而降低，主橋的橋墩及過渡墩則呈現增加趨勢；梁間及橋臺間的碰撞次數在不同水深下變化不明顯，但伸縮縫碰撞力隨著水深的增加而顯著增長。

關鍵詞：深水環境 ；動水作用 ；非線性時程響應分析 ；碰撞效應 ；連續剛構橋梁

中圖分類號：U448 . 23            

文獻標志碼：A            

文章編號： 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

作者簡介： 牛宗勝  (1972—) ,   男 ，本科 ， 高級工程師 ，研 究方向：道路橋梁工程。

收稿日期：2023 - 05 - 30