重力坝劈头裂缝成因分析  

Analysis of Cause of Vertical Crack in Gravity Dams

作　　者：邵勇[1] 任旭华[2] 

机构地区：[1]河海大学土木工程学院工程力学系,江苏南京210098 [2]河海大学水利水电工程学院,江苏南京210098

出　　处：《水电能源科学》2009年第1期119-121,共3页Water Resources and Power

摘　　要：针对重力坝劈头裂缝已构成危害重力坝结构的安全,采用三维有限单元法对Deorshak重力坝劈头裂缝的成因进行仿真计算和探讨,得出坝体内外温差、缝面水压和材料断裂韧度的下降导致了裂缝的扩展,指出采取有效的工程措施可避免重力坝出现劈头裂缝。Owing to the problem that the vertical cracks of gravity dams have jeopardized the structure safety, the 3D facture finite element method is applied in this paper to simulate and probe into the causes of vertical cracks in Deorshak gravity dam. water pressure in crack faces and the degradation of fracture toughness. In the conclusion, the effective engineering measures are carried out for prevention of the appearance of vertical cracks on gravity dams.

关 键 词：重力坝 劈头裂缝 断裂力学 仿真计算 

分 类 号：TV642.3[水利工程—水利水电工程]