摘要
鉴于龙抬头式放空洞及其闸室抗震动力特性迄今研究鲜少,采用振型分解反应谱法对放空洞及其闸室工程实例进行抗震特性研究,通过有限元软件ANSYS进行模态分析得到自振频率和典型振型图,以及谱分析进行结构应力及位移状况研究,分析表明整体结构主要受到横河向地震作用,放空洞进水口、闸室顶部、反弧段始端的洞底等部位存在压应力集中现象,该研究为相关工程的优化设计提供了重要参数。
As so far, given the fact that the seismic dynamic characteristics of the dragon tunnel and lock chamber structure have been rarely studied, this article study the seismic characteristics of engineering example of dragon tunnel and lock chamber structure by using the mode-superposition response spectrum method.Through the finite element method software ANSYS, the paper does the model analysis and the spectrum analysis, and obtains the vibration frequency, typical vibration diagram and its structures’ stress and displacement conditions. The results show that the overall structure is mainly controlled by the Henghe earthquake; the chamber of sluice intake, the top of the chamber, flip bucket and other parts occur compressive stress concentration phenomenon. The study provides an important parameter for the optimization design of related projects
出处
《华南地震》
2016年第1期44-48,共5页
South China Journal of Seismology
关键词
龙抬头式放空洞
闸室
有限元
自振频率
抗震性能
The Dragon tunnel
Chamber of sluice
The finite element method
Natural frequency of vibration
Seismic performance
