深水桥梁墩水耦合抗震分析方法

刘浪; 杨万理; 李乔

doi:10.3969/j.issn.0258-2724.2015.03.010

深水桥梁墩水耦合抗震分析方法

doi: 10.3969/j.issn.0258-2724.2015.03.010

刘浪¹,
杨万理¹,
李乔^1,2

基金项目:

国家973计划资助项目(2011CB013605-5)

国家自然科学基金资助项目(51108383)

详细信息

作者简介:
刘浪(1988-),男,博士研究生,研究方向为桥梁结构抗震,电话:13882147363,E-mail:705119767@qq.com

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出版历程
- 收稿日期: 2014-05-04
- 刊出日期: 2015-06-25

Seismic Analysis Method of Deep-Water Bridge Pier and Water Coupling

摘要

摘要: 为正确采用动水压力计算方法,提出了一种新的深水桥梁墩水耦合计算方法结合法,即将Morison方程与计算流体力学相结合,分析深水桥梁墩水耦合抗震问题.ANSYS-CFX模型计算表明:结合法能较好地进行墩水耦合抗震分析;深水环境使墩顶最大弹性位移减小,最大刚体位移增大,结构整体变形增大;刚体运动附加动水力对桥墩起主要作用,但应同时考虑弹性振动引起的动水压力.
- 深水桥梁 /
- 流固耦合 /
- 结合法 /
- 地震响应
Abstract: To adopt a right method to calculate hydrodynamic pressure, a novel method, combining the Morison equation with CFD (computational fluid dynamics), for calculating the seismic responses of a deep-water bridge under pier-water coupling was proposed. The results based on the ANSYS-CFX model show that the proposed method can calculate the seismic responses of a deep-water bridge under pier-water coupling effectively. A deep-water environment will decrease the maximum elastic displace-ment at pier top, but it will increase the maximum rigid displacement and the total stsructure displacement. Additional hydrodynamic pressure generated by rigid motion plays a major role, and the effect of elastic vibration must be considered.
- deep-water bridge /
- fluid-structure interaction /
- combined method /
- seismic response

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