According to the measured data by the strain gauge group and the supporting stress-free gauge embedded in an arch dam,the temperature linear expansion coefficient,autogenous volume defor-mation and uniaxial strain of the concrete of dam section No.9 are obtained by calculation.The mea-sured dam stress(including normal stress,shear stress and principal stress,etc.)by the strain gauge group is obtained by using the deformation method.The actual stress distribution characteristics,varia-tion law and stress magnitude of the concrete of dam section No.9 are analyzed.The calculation and analysis results show that the variation law and distribution characteristics of concrete stress of dam sec-tion No.9 are basically reasonable,the stress magnitude is within the allowable range,and the stress of dam body is in normal state.
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万方数据