摘要
采用反应谱法计算在地震作用下大坝结构的动力响应。对高地震烈度区深山峡谷中的碾压混凝土重力坝的抗震问题,针对其建基面横河向坡度很大的特点,特别计入横河向的水平地震作用,并采用根据承载能力极限状态设计式转换得到的名义安全系数进行稳定复核,得出一些有益的结论。
The response spectrum method is applied to measure the dynamic response of dam structure under seismic action.As the RCC gravity dam,which is built in deep valley with strong seismic intensity,has a great slope transversal to river direction at its foundation base,horizontal seismic action transversal to river direction is taken into account in anti-seismic design.Nominal safety factors obtained from bearing capacity limit state design formula are used to conduct stability recheck,and some significant conclusions are drawn.
引文
[1]顾淦臣.土石坝地震工程[M].南京:河海大学出版社,1988.
[2]哈莉娅-达力列汗.反应谱及反应谱的局限性[J].四川建筑,2004,24(6):110-112.
[3]蔡德所.复杂坝基与滑坡研究中的新方法[M].北京:中国电力出版社,1998.
[4]COULGH R W,CHENG K T,CHEN Hou-qun,et al.Dynamic interaction effects in arch dams report No.EERC-85/11[R].Berkeley:Earthquake EngineeringResearch Center,University of California,1985.
[5]钱基宏,刘枫.大跨度空间结构抗震分析反应谱理论求解的快速算法[J].空间结构,2004,10(1):3-6.
[6]DL5073-2000,水工建筑物抗震设计规范[S].
[7]DL5073-2000,混凝土重力坝设计规范[S].
[8]杨华全,任旭华.碾压混凝土的层面结合与渗流[M].北京:中国水利水电出版社,1999.