摘要
龙羊峡水电站是黄河上游开发的龙头电站,大坝抗震设防烈度高达9度,大坝动力特性倍受关注,抗震安全至关重要。本文应用现行规范规定的方法和原则以及考虑地基辐射阻尼、地震动非均匀输入以及坝体伸缩横缝强震开合等综合复杂因素影响的非线性有限元波动分析方法,对大坝-地基-库水系统进行深入的地震动力分析,研究了重力拱坝的动力特性,分析了大坝的动态反应,综合评价了大坝的抗震安全性。
Longyangxia gravity arch dam, which belongs to Longyangxia Hydrop>ower Station with a height of 178m and within the design earthquake intensity of 9 degree district, is a key project for hydropower development at upper reaches of Yellow River. The dynamic behavior, the dynamic reaction and the aseismic safety of the gravily arch dam including body of dam-foundation-storage capacity of water system, have been studied, analyzed and comprehensive evaluated thoroughly. By applying the provisions of corresponding cunnent codes and using the dynamic trial load method, the three diamensional finite element method and nonlinear wave analysis technique, that the overall influence of real geological and topographical condition of dam site, the opening of transverse expansion joint under strong shock, the radiation damping of infinite foundation and the non-uniform earthquake input are taken into consideration.
出处
《土木工程学报》
EI
CSCD
北大核心
2003年第10期41-45,59,共6页
China Civil Engineering Journal
