南水北调工程氵名河渡槽耦合动力分析

在合理模拟临跨的静态荷载以及质量影响的基础上,采用三维有限元对南水北调工程氵名河大型渡槽典型槽段单跨渡槽进行结构地震动力分析.对于影响渡槽结构动力响应的盆式支座、槽内水体与结构的流固耦合作用以及桩基-土体的动力相互作用,参照相关规范的原则和相关研究成果,在尽可能反映其实际影响和合理简化的基础上进行模拟,研究了结构自振特性、结构各部位的动力位移、应力以及内力响应.计算结果表明:采用不同水体模拟方法和不同计算分析方法得到的动力响应规律是一致的,动力响应值比较接近.

Coupled Aseismatic Dynamic Analysis of Minghe Aqueduct in South-to-North Water Transfer Project

Three dimensional coupled aseismatic dynamic analysis of typical single span structure system of Minghe large scale aqueduct in south-to-north water transfer project was carried out,based on the rational thinking of static load and mass coming from the neighbor spans.According to relative principles and research results,bowl rubber bearings,water flow and aqueduct wall interaction and pilesoil-structure dynamic interaction were simulated.The research results included the characteristic of the natural vibration of aqueduct and dynamic response of structure system.The result has shown that the response trends are similar and the response is close.