摘要
渡槽是输水工程中的控制性工程,在地震中容易发生破坏,导致沿线供水中断。虽然大量渡槽已经建成并投入使用,但关于渡槽的抗震研究还不够完善,在国内还没有统一的渡槽抗震简化计算方法。该文以流固耦合动力学为基础,结合反应谱理论,推导了渡槽横向地震响应的简化计算公式,并与非线性流固耦合有限元时程分析进行对比。对比结果表明:该文提出的简化计算方法可以快速计算渡槽的横向地震响应,计算结果不仅能够有效反映水体晃动对渡槽结构的减震作用,且与数值分析结果吻合较好。
An aqueduct is a controlling structure in water diversion engineering, which can possibly be damaged during earthquakes, triggering interruptions in the supply of water. Although numerous aqueducts have been built and operated, research on aqueduct earthquake resistance is not sufficient, and simplified seismic design methods for aqueducts are not unified. Based on fluid-structure interaction dynamics and response spectra analysis, a simplified formula was proposed to calculate the transverse seismic response of aqueducts. The obtained result was compared with the results derived using nonlinear finite element time-history response calculation of fluid-structure interaction. It is concluded that the simplified method proposed in this paper can quickly calculate the transverse seismic response of aqueducts. Additionally, the results not only can effectively reflect the damping effect of the water sloshing acting on aqueduct structure, but also matched well with the numerical analysis results.
出处
《工程力学》
EI
CSCD
北大核心
2017年第8期69-75,95,共8页
Engineering Mechanics
基金
国家自然科学基金面上项目(51378034)
北京市自然科学基金面上项目(8122007)
关键词
渡槽
抗震简化计算
流固耦合
反应谱法
数值模拟
aqueduct
simplified seismic calculation
fluid-structure interaction
response spectrum method
numerical simulation
