摘要
针对淮安立交地涵空间薄壁结构的受力特点,采用高精度六面体8结点非协调单元,建立了有限元模型,模拟了结构的布置形式和细部特征。考虑到闸室、地涵和地基的相互作用,导出了可用于闸墙、闸室、渡槽的动水压力附加质量统一算式。计算了结构的自振特性,分析了 度地震作用时的动力反应。研究方法和研究成果可供立交地涵和其它同类结构的抗震分析和设计参考。
According to the force characteristics of the threedimensional thinwall structure of Huai′an overhead crossing underground culvert, a precise finite element model is developed by use of a highaccuracy nonconforming 8node hexahedron element and the layout form and detailed characteristics of the structure are simulated Considering interaction among the lock chamber, the culvert and the foundation, a unified formula of the attached mass of dynamic water pressure on lock wall, lock chamber, culvert and etc is derived The free vibration characteristic of the structure is calculated and the dynamic response in earthquake with intensity 7 is analyzed The study method and result are of referential values for earthquakeresistant analysis and design of underground culverts and other similar structures
出处
《灾害学》
CSCD
2002年第4期48-53,共6页
Journal of Catastrophology
关键词
立交地涵
非协调元
薄壁结构
动水压力
抗震分析
淮安市
水工建筑物
overhead crossing underground culvert
nonconforming element
thinwall structure
dynamic water pressure
earthquakeresistant analysis
