梁式多侧墙渡槽结构地震位移响应分析

以开口型渡槽为研究对象,应用housner理论,建立流固耦合力学模型,选择中周期地震波,施加于渡槽结构的X、Y、Z方向,运用ANSYS分析软件及结构动力分析的时程分析法,对渡槽结构进行地震响应分析,计算4种工况(空槽、中槽过水、两边槽过水、全部过水)下,渡槽结构各部件(槽身、槽墩、侧墙、底板)的位移响应。结果可知,槽身侧墙的横向抗震能力相对较低,是各种工况下的安全控制因素;流固耦合作用下,渡槽的不同结构部位,其最不利的工作状况不同;水平向地震影响(无论是横槽向还是顺槽向)下,工况4最为不利;槽身横槽向地震位移远大于顺槽方向;水平向地震激励引起的渡槽地震响应,大于竖向激励引起的地震响应。

Analysis of Displacement Response of Beam Multi-flank Wall Aqueduct

With the open type aqueduct as object of study, applied housner theory and established the mechanical model of fluid-structure interaction, selected period seismic waves, applied to the aqueduct structure of X, Y, and Z directions, used ANSYS analysis software and time history analysis method of structural dynamic analysis, analyzed seismic response of the aqueduct structure, calculated the displacement response of aqueduct various parts of the structure（aqueduct, trough pier, side walls, floor） under four conditions （empty slot, Middle slot over water, Both sides of the trough over the water, All over the water） . The results shows that： Groove side of the trunk wall of the lateral seismic capacity is relatively low and it is the security control factors Under various conditions ; under the fluid - structure interaction , the most unfavor- able working conditions are different as the different structural parts of the aqueduct ;Under the Horizontal earthquake （cross slot to or crossheading ）, the four working conditions is most disadvantage; Aqueduct horizontal trough seismic dis- placement is much larger than along the groove direction; Horizontal seismic excitation caused by the the aqueduct earth- quake response is greater than the vertical excitation caused by the earthquake response.