Abstract: Based on the prototype monitoring data of displacement of Chongqing Jiangkou arch dam, the inversion on the elastic modulus of dam concrete is conducted. The water pressure component of displacement is separated from the stepwise regression statistical model and the arch beam load sharing model is established to estimate the water pressure component as the concrete elastic modulus of the dam body is assumed. Then the hybrid model is established and the comprehensive elastic modulus of the dam concrete is obtained. It is found that the inversion analysis of elastic modulus of dam concrete with arch beam load sharing method and statistical analysis method as the main means is feasible.

Key words: inversion, elastic modulus, arch beam load sharing

摘要： 基于重庆江口拱坝原型位移监测资料，对大坝混凝土弹性模量进行反演。首先从逐步回归统计模型中分离出位移水压分量，建立拱梁分载模型，推求假设坝体混凝土弹性模量时的水压分量，再建立混合模型进而反演得到坝体混凝土综合弹性模量。结果表明，以拱梁分载法和统计分析法为主要手段反演拱坝坝体混凝土综合弹性模量是可行的。

关键词: 反演, 弹性模量, 拱梁分载