拱坝横缝配筋动力响应的模型试验和计算分析  

Model tests and numerical analyses of the nonlinear seismic behavior of arch dams with reinforced contraction joints

作　　者：盛志刚[1] 徐艳杰[2] 刘海笑[1] 

机构地区：[1]天津大学建筑工程学院,天津300072 [2]清华大学水利水电工程系,北京100084

出　　处：《清华大学学报（自然科学版）》2009年第3期317-320,共4页Journal of Tsinghua University(Science and Technology)

基　　金：国家自然科学基金资助项目(50209004)

摘　　要：配置横向跨缝钢筋后,拱坝在动力荷载下的非线性响应是高拱坝领域的一个重要课题。该文在采用脆性材料制作的带横缝配筋拱坝模型的基础上,通过振动台模型试验研究了带横缝拱坝在谐波和地震波作用下的动力响应,并运用改进的拱坝非线性分析有限元程序ADAP-88(增加配筋数值模型)进行计算比较。试验结果验证了横向配筋数值分析模型的正确性,揭示出带横缝拱坝在地震荷载作用下的一些反应规律,包括配置跨缝钢筋可明显减小强震作用下横缝的张开度,防止止水遭到破坏,并明显提高拱坝的整体性。The nonlinear seismic behavior of arch dams with reinforced contraction joints is one of the key topics in arch dam engineering. The behavior of an arch dam model with brittle materials and reinforced contraction joints was investigated in shaking table tests with harmonic loadings and earthquake waves. The same dynamic process was then simulated with the finite element program of ADAP-88 in which the strengthening effect of the contraction joint reinforcement can be considered. The numerical results agree well with the experimental data. The test results show that the contraction joint openings are significantly reduced by the reinforcements and that the arch dam integrity is obviously improved.

关 键 词：水工结构 拱坝横缝 横缝配筋 地震反应 

分 类 号：TV312[水利工程—水工结构工程]