摘要
介绍了基于性能的设计方法的发展与应用,对重力坝性能指标进行了初步探索。对坝体裂缝与重力坝性能的关系进行了讨论,并分析认为裂缝是致使重力坝性能降低的主要因素与表现形式。介绍了3种性能指标,并对3种指标各自的优劣进行了探讨。基于上述分析,提出使用坝顶下游侧水平位移作为重力坝的性能指标,并结合实例对这一指标的合理性进行了详细探讨。最后,探究了位移性能指标的改进方式。
In this paper,the development history and application of PBSD（Performance-Based Seismic Design） is introduced and re- search is clone to determine the performance index of gravity dams. First, the relationship between cracking and the performance of gravity dams is discussed. Then it is concluded that cracking is the main factor lowering the performance. 3 indexes raised by some scholars are robed into and the advantages and disadvantages of each index are discussed and presented in the context. Based on the a- nalysis made above,the dam crest displacement is determined to be the performance index of gravity dams, and the reasons for sup- porting this attitude are listed in detail. Finally, one improved method of Performance Index based on crest displacement is put forward.
出处
《中国农村水利水电》
北大核心
2013年第2期85-88,91,共5页
China Rural Water and Hydropower
基金
国家自然科学基金资助项目(51079044)
关键词
水工结构
基于性能
性能指标
重力坝
裂缝
损伤力学
hydraulic structure
Performance-Based
performance index
gravity dam
cracking
damage mechanics
