水工混凝土结构抗震研究60年  

Research on concrete hydraulic structures in the past 6 decades

作　　者：陈厚群[1] CHEN Houqun(China Institute of Water Resources and Hydropower Research,Beijing 100048,China)

机构地区：[1]中国水利水电科学研究院,北京100048

出　　处：《中国水利水电科学研究院学报》2018年第5期322-330,共9页Journal of China Institute of Water Resources and Hydropower Research

摘　　要：本文简要介绍了中国水利水电科学研究院60年来在水工混凝土结构,主要是大坝的抗震研究方面的进展。回顾了其历经"启蒙"、追踪世界前沿的"跟跑"和"并跑"三个发展阶段。概述了主要研究成果,诸如:坝址的地震动输入及其场址相关地震动参数的确定;应用高性能"云计算"技术,对坝体-地基-库水体系地震响应及其基于损伤力学的损伤破坏过程的非线性并行计算分析;极端地震下地震灾变的定量判别准则的确定;采用三向六自由度地震模拟振动台进行坝体-地基-库水体系动力模型试验;大坝现场试验和地震动监测;大坝混凝土全级配试件包括损伤本构关系的动态特性试验及应用三维细观力学分析和CT技术研究其内部开裂状态;编制水工建筑物抗震设计国家标准等。最后,对常规的抗震设计理念和方法提出了改进建议。In this paper a brief introduction to major progress in the research on seismic aspects of concrete hydraulic structures,mainly high dams,conducted at the China Institute of Water Resources and Hydropower Research(IWHR)during the past 60 years,is presented.Its three development stages of starting,running after and catching up with the world frontiers are reviewed.Some major research achievements are described,such as:seismic input at dam site and defining its site specific seismic parameters,non-linear dynamic parallel analyses of seismic responses and damage-rupture process of dam-foundation-reservoir system by using high-performance‘cloud computing’,quantitatively evaluating the criterion of the limit state of dam-breach,dynamic model tests on triaxial earthquake simulator with six degrees of freedom,field experimental investigation of dams and seismic monitoring at dam site,study on dynamic behaviors of dam concrete including its damage institution laws by fully-graded specimen tests and investigating its internal cracking pattern using 3-D meso-mechanics analysis and X-ray CT technology,formulating state seismic design standard for hydraulic structures,etc.Finally,some comments on updating the conventional seismic design idea and methodology are suggested.

关 键 词：混凝土水工结构 大坝混凝土动态特性 坝址地震动输入 地震响应 抗震设计规范 常规设计改进 

分 类 号：TV331[水利工程—水工结构工程]