考虑流-固耦合梁式矩形渡槽横向地震响应研究  

TRANSVERSE SEISMIC RESPONSE OF BEAM AQUEDUCT CONSIDERING FLUID-STRUCTURE COUPLING

作　　者：季日臣[1,2] 夏修身[1] 陈尧隆[3] 王丽[1] 

机构地区：[1]兰州交通大学土木工程学院 [2]中国西安710048,西安理工大学水利水电学院 [3]西安理工大学水利水电学院

出　　处：《地震学报》2007年第3期328-334,337,共7页Acta Seismologica Sinica

基　　金：国家自然科学基金项目(50279024);兰州交通大学"青蓝"人才工程基金项目(QL-05-13A)资助.

摘　　要：根据豪斯纳尔(Housner)理论,建立了考虑槽内水体与渡槽槽身流-固耦合的横向地震响应计算模型,分析了槽身断面深宽比变化对渡槽结构抗震的影响,并对某大型渡槽进行了多工况地震时程响应计算.结果表明,在地震波作用下,渡槽槽内大质量水体对渡槽的横向地震响应有较大的影响,但水体的晃荡作用有明显的TLD效应.若将水体视为刚体,质量全部附加到槽体上,将严重地夸大水的地震惯性力作用,且在渡槽槽身断面选择时应考虑深宽比对墩身地震响应的影响,以减小地震力.Based on the theory of Housner, the transverse seismic response of beam aqueduct considering fluid-structure coupling is established. With the variation of aqueduct cross-section ratio of depth to width, the aqueduct transverse seismic response change. The transverse seismic response of a large-scale aqueduct in several work condition are calculated. It shows that the transverse seismic response is greatly influenced by the water mass in the aqueduct, but the shaking water play a TLD role. If the whole water is appended aqueduct body, it will magnify seismic inertia action. When aqueduct cross-section is selected, the influence of ratio of depth and width to pier seismic response should be considered in order to reduce seismic action.

关 键 词：渡槽 流-固耦合 地震响应 水体模型 TLD效应 

分 类 号：P315.9[天文地球—地震学]