键槽仿真材料结构模型试验研究

Model Test Study by keyway Emulated Material Structure

本文通过两个大比例尺仿真材料结构模型试验和非线性有限元分析,研究了东江水电站双曲拱坝坝后式引水管道与坝体连接键槽在各组荷载工况下的结构受力特征。依据键槽、缝面钢筋和锚筋在垂直荷载和水平荷载作用下的实测应力数据,分析了混凝土与钢筋之间的联合工作情况和应力分配规律,描述了超载状态下结构的破坏机理,为键槽结构设计提供了参考数据。

By the two big scale emulated material structure model test and nonlinear finite element analysis, the structure for cing feature under varied combined load on the jointing keyway between the penstock and the double curvature, arch dam of Dongjiang water-power station is studied, which is presented in this paper. According to the measured stress occurred by vertical and horizontal load on the keyway and sutura reinforcing bar and dowel, the joint work situaticn and stress distribution are analyzed, and the structure breaking process under the condition of overload is described, which provide the reference date for keyway structure design