高混凝土坝抗震设计面临的挑战  

Challenge Confronted in Seismic Design of High Concrete Dams

作　　者：陈厚群[1] 

机构地区：[1]中国水利水电科学研究院,北京市100048

出　　处：《水电与抽水蓄能》2017年第2期1-13,49,共14页Hydropower and Pumped Storage

摘　　要：高坝建设在我国的水资源和水能利用中有无可替代的重要作用,但面临难以避让的抗震安全问题的挑战,其震灾的次生灾害可能导致不堪设想的严重后果。目前我国已是高坝建设的世界大国,但尚难称更新高坝设计中现行常规理念和方法的强国。本文探讨了对200m高坝已不切实际的某些传统设计理念和方法。从地震动输入、结构响应、材料抗力等三个相互关联的方面,阐述了高坝抗震设计中创新的设计理念和方法的进展。提出了基于更切近实际的分析模型的、把抗震强度和稳定校核融为一体的、高坝地震损伤破坏过程分析的综合方法。The construction of high dams plays an important and irreplaceable role in utilization of water and hydropower resources in China. However, it has to face the challenge of seismic safety problem difficult to avoided as its consequences of secondary catastrophe resulted in severe earthquake once happened is unthinkable. China is now becoming a world giant in construction of high dams, but is yet to be power in updating the conventional design idea and methodology. Some having been impracticable traditions for dams higher 200m are discussed in this paper. Also the progresses of the creative innovated seismic design idea and methodology for high concrete dams in three closely connected each other aspects of seismic inputs, structural responses and material resistances are described. A comprehensive approach of analyzing the seismic damage-rupture process of high concrete dams to merge with strength and stability checking into an organic whole based on the model more fitted in with practical conditions is introduced.

关 键 词：抗震设计 高混凝土坝 损伤破坏过程 地震动输入 结构响应 材料抗力 

分 类 号：TV642.1[水利工程—水利水电工程]