井壁结构中混凝土强度提高系数的研究

An Study on Concrete Strengthening Coefficient in a Shaftlining Structure

通过对井壁结构中混凝土受力状态的分析．指出了混凝土由于处于复杂应力状态下其抗压强度将有较大程度地提高，根据井壁结构模型试验结果，得到了井壁结构中混凝土抗压强度提高系数的回归公式．从而为井壁结构的合理设计提供了试验依据。

Based on the analysis of the state in which forces act upon the concrete in shaftlining structure, it isproposed that the concrete's bearing strength increases greaterly in a complex stress state, and based on theresults of the model experiments of the shaftlining structure, an experience formula is obtained for the concrete's strengthening coefficient. The experimental evidences were provided for the reasonable design of shaftliningstructure.