深水高墩大跨连续刚构桥抗震性能分析  

Seismic Performance Analysis of Deep-water High Pier Long Span Continuous Rigid Frame Bridge

作　　者：牛宗胜 NIU Zongsheng(Beijing First Expressway Construction Management Co.,Ltd.,Beijing 100071,China)

机构地区：[1]北京市首发高速公路建设管理有限责任公司,北京100071

出　　处：《粉煤灰综合利用》2025年第2期151-155,共5页Fly Ash Comprehensive Utilization

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。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.

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 

分 类 号：U448.23[建筑科学—桥梁与隧道工程]