考虑流固耦合的大型渡槽地震响应分析
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摘要
针对大型渡槽结构动力响应问题,基于Housner理论的槽身与槽内水体的流固耦合模型,以南水北调中线某大型渡槽工程为例,分析了该渡槽各构件的受力特点,建立了三维有限元动力模型,采用ANSYS动力时程分析技术计算了不同工况下该大型渡槽的结构动力响应。结果表明,在地震荷载时考虑流固耦合作用,渡槽的不同运行工况对其结构的地震响应影响较大,为同类型大型渡槽结构提供了理论依据和设计参考。
Aiming at the problem of structural dynamic response of large-type flume,mechanical characteristics of flume components are analyzed in terms of the fluid solid coupling model of water body within flume based on the theory of Housner.Taking the large-type flume engineering located in the middle route of the South-to-North Water Transfer Project for an example,3D dynamic finite element model is established in this paper.The dynamic response of the flume has been calculated under different load cases using the time history analysis method in ANSYS.The results show that the different operation condition of flume has great influence of its structural seismic response when considering fluid solid coupling with earthquake load.Thus,it provides theoretical basis and design reference for the similar large-type flume projects.
Aiming at the problem of structural dynamic response of large-type flume,mechanical characteristics of flume components are analyzed in terms of the fluid solid coupling model of water body within flume based on the theory of Housner.Taking the large-type flume engineering located in the middle route of the South-to-North Water Transfer Project for an example,3D dynamic finite element model is established in this paper.The dynamic response of the flume has been calculated under different load cases using the time history analysis method in ANSYS.The results show that the different operation condition of flume has great influence of its structural seismic response when considering fluid solid coupling with earthquake load.Thus,it provides theoretical basis and design reference for the similar large-type flume projects.
引文
[1]刘云贺,胡宝柱,闫建文,等.Housner模型在渡槽抗震计算中的适用性[J].水利学报,2002,94(6):94-99.
[2]宋金峰,陈厚群.水体对渡槽结构地震空间响应的计算[A].第五届全国地震工程会议论文集[C].北京:中国建筑学会、中国地震学会,1998:697-703.
[3]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.
[4]徐建国,陈淮,王博,等.考虑流固动力相互作用的大型渡槽地震响应研究[J].土木工程学报,2005,38(8):67-73.
[5]李涛峰,刘勇文.不同支座形式对渡槽结构地震响应的影响[J].2009,7(4):116-119.
[6]王博,陈淮,徐伟,等.考虑槽身与槽内水体流固耦合的渡槽地震反应计算[J].水利水电科技进展,2005,25(3):5-7,50.
[2]宋金峰,陈厚群.水体对渡槽结构地震空间响应的计算[A].第五届全国地震工程会议论文集[C].北京:中国建筑学会、中国地震学会,1998:697-703.
[3]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.
[4]徐建国,陈淮,王博,等.考虑流固动力相互作用的大型渡槽地震响应研究[J].土木工程学报,2005,38(8):67-73.
[5]李涛峰,刘勇文.不同支座形式对渡槽结构地震响应的影响[J].2009,7(4):116-119.
[6]王博,陈淮,徐伟,等.考虑槽身与槽内水体流固耦合的渡槽地震反应计算[J].水利水电科技进展,2005,25(3):5-7,50.
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