高拱坝伸缩横缝间布设抗震钢筋的动力反应分析  

Numerical Modeling of Aseismic Reinforcement Between Contraction Joints in High Arch Dam

作　　者：郭永刚[1] 孙五继[2] 刘宪亮[2] 

机构地区：[1]中国水利水电科学研究院,北京100044 [2]黄河水利职业技术学院,开封475001

出　　处：《应用力学学报》2007年第1期16-20,共5页Chinese Journal of Applied Mechanics

摘　　要：应用动力非线性子结构理论,对设置伸缩横缝的小湾高拱坝实际工程结构抗震分析中的坝体横缝加抗震钢筋问题进行了研究。讨论并建立了坝体伸缩横缝在地震荷载作用下穿越缝间抗震钢筋的数学模型,给出了动力非线性子结构法考虑缝间抗震钢筋影响的求解公式;并就正常高水位常与低水位两种水位工况,对坝体的抗震性能进行了计算分析。讨论了在地震荷载作用下抗震钢筋对坝体横缝张开度、坝体应力以及加速度响应的影响。The seismic resistance of Xiaowan arch dam,where the contraction joints are considered based on substructure theory,is analyzed.Regarding the reinforcement as a engineering anti-seismic measure in the real dam,a numerical model is set up to simulate the reinforcement and the effects on the dam seismic resistance at two water levels are evaluated.The response of joints opening,dam stress and acceleration under earthquake loads are discussed.

关 键 词：伸缩横缝 高拱坝 动力子结构 

分 类 号：TV312[水利工程—水工结构工程]