水下桥墩结构的振动分析

详细信息 本馆镜像全文    |  推荐本文 | | 获取馆网全文

英文篇名：Analysis of Vibration of Underwater Bridge Pier Structure 中文刊名：世界桥梁 英文刊名：World Bridges 作者：杨吉新 ; 雷凡 ; 李昆 英文作者：YANG Ji-xin1 ; LEI Fan1 ; LI Kun2(1.School of Transportation ; Wuhan University of Technology ; Wuhan 430063 ; China ; 2.Edong Changjiang River Highway Bridge Co. ; Ltd. ; Huangshi 435000 ; China) 中文关键词：桥墩 ; 实体结构 ; 空心结构 ; 流固耦合 ; 振动频率 英文关键词：bridge pier ; solid structure ; hollow structure ; fluid-solid interaction ; vibration frequency 出版日期：2009-09-17 机构：武汉理工大学交通学院;鄂东长江公路大桥有限公司; 年：2009 期：03 出版单位：世界桥梁

摘要

为研究水流对桥墩结构振动特性的影响,分别建立了水与实体桥墩和空心桥墩的流固耦合模型,计算了各自的振动频率,并与理论公式的计算结果比较,两者基本吻合。分析后得出结论:考虑内部水流作用时,空心桥墩的自振频率随壁厚的减小呈现先缓慢增大,后迅速减小的趋势;水流对高墩和薄壁墩自振频率的影响更大。
To study the influence of water current on the vibration characteristics of underwater bridge pier structure,the fluid-solid interaction models for the water current and solid pier and hollow pier were respectively built and the vibration frequency of each kind of the pier was calculated.The results of the calculation were then compared to those calculated by the theoretic formulas and it was found that the results were basically identical.The conclusions drawn from the analysis are that when the action of the internal water current is taken into account,the natural frequency of the hollow pier tends to first slowly increases and then promptly decreases with the decrease of the thickness of the pier walls and the water current has still greater influence on the natural frequency of the high-rise and thin-wall piers.

引文

[1]张敏.桥墩与河水流固耦合振动分析(硕士学位论文)[D].大连:大连交通大学,2006.
    [2]喻萌.基于ANSYS的输流管道流固耦合特性分析[J].中国舰船研究,2007,2(5):54-57,67.
    [3]陈华明.蛋形消化池流固耦合反应研究与动力可靠度分析(博士学位论文)[D].上海:同济大学,2005.
    [4]曹亮.输流管道流固耦合振动特性分析(硕士学位论文)[D].昆明:昆明理工大学,2004.
    [5]居荣初,曾心传.弹性结构与液体的耦联振动理论[M].北京:地震出版社,1983:222-237.