一种提高重力坝抗震性能的方法  

Method to improve anti-seismic performance of gravity dams

作　　者：周星德[1] 章青[1] 吴继敏[2] 刘谦敏[1] 刘广波[1] 石星星[1] 

机构地区：[1]河海大学力学与材料学院,江苏南京210098 [2]河海大学地球科学与工程学院,江苏南京210098

出　　处：《水利水电科技进展》2011年第3期31-33,共3页Advances in Science and Technology of Water Resources

基　　金："十一五"国家科技支撑计划(2008BAB29B03)

摘　　要：针对我国大坝多建于高烈度地震区、坝基中存在软弱结构面和缓倾角裂隙等现象,以某重力坝为研究对象,探讨了在大坝坝底铺设铅加球墨铸铁对坝体动力反应及动力深层抗滑稳定性的影响。计算结果表明,坝底铺设铅加球墨铸铁可有效降低坝体动力反应,提高重力坝动力深层抗滑稳定性,这为提高大坝抗震性能提供了一种新的途径。Aimed at the phenomenon of China＇s dams mostly built on high intensity earthquake areas with weak structural surfaces and low-inclined cracks in the dam foundation,the influences of laying lead and nodular cast iron at the dam bottom on its dynamic responses and dynamic deep anti-slide stability were investigated by taking a gravity dam as an example.The results show that laying lead and nodular cast iron at the dam bottom can effectively reduce its dynamic responses and enhance its deep anti-slide stability.It may provide a new approach for raising the anti-seismic performance of gravity dams.

关 键 词：重力坝 深层抗滑稳定性 动力分析 地震 

分 类 号：TV64[水利工程—水利水电工程] TV312