高烈度区碾压混凝土重力坝抗震评价方法研究  

Research on Seismic Evaluation Method of RCC Gravity Dam in High Seismic Intensity Regions

作　　者：李金友 张以胜[3] LI Jinyou;ZHANG Yisheng(Hunan Institute of Water Resources and Hydropower Research, Changsha 410007, Hunan, China;College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, Jiangsu, China;Shanghai Investigation, Design and Research Institute Co . , Ltd . , Shanghai 200434, China)

机构地区：[1]湖南省水利水电科学研究院,湖南长沙410007 [2]河海大学水利水电学院,江苏南京210098 [3]上海勘测设计研究院有限公司,上海200434

出　　处：《水力发电》2019年第5期54-57,共4页Water Power

基　　金：国家自然科学基金项目(51579083;51579085);水利部公益性行业科研专项经费项目"高混凝土坝抗震安全研究"(20155015412)

摘　　要：通过借鉴美国水工抗震设计规范(US-ACE),提出了适用于高烈度区的碾压混凝土重力坝抗震评估指标及分级设防评价方法。结合混凝土塑性损伤模型,首先建立以DCR为评价指标的反应谱法评价方法;然后逐渐过渡到线弹性时程评价分析法、非线性时程评价分析法,并依次构建OBE、设计地震和MCE作用下坝体-坝基-库水系统的抗震性能评价方法;最后将上述评价方法运用于高烈度区巴基斯坦玛尔水电站碾压重力坝工程,评估该坝的抗震性能。By referring to American Seismic Design Code for Hydraulic Engineering (US-ACE), the seismic evaluation index and graded fortification evaluation method suitable for RCC gravity dam in high seismic region are proposed. Combined with the plastic damage model of concrete, the evaluation method of response spectrum method with DCR as the evaluation index is firstly set up. Then it gradually changes to linear elastic time history analysis method and nonlinear time history analysis method, and the evaluation method of the dam-foundation-water system under OBE, design earthquake and MCE is constructed in turn. Finally, the evaluation method is applied to the RCC gravity dam of Mahl Hydropower Station in Pakistan to evaluate its seismic performance.

关 键 词：抗震评价 MCE 动力响应 评价指标 损伤指数 碾压混凝土重力坝 

分 类 号：TV642[水利工程—水利水电工程]