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首页> 外文会议>International Conference on Material Engineering, Chemistry, Bioinformatics >Research on Autogenous Volume Deformation's Influence on Thermal Creep Stress of Concrete High Arch Dam
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Research on Autogenous Volume Deformation's Influence on Thermal Creep Stress of Concrete High Arch Dam

机译：自体变形对混凝土高拱坝热蠕变应力影响的研究

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摘要

Autogenous volume deformation is an important parameter of anti-cracking behaviors of concrete. The sensitivity analysis of influence of concrete autogenous volume deformation on thermal stress of Xiaowan high arch dam is carried out based on simulation of temperature field. When presuming autogenous volume deformation, expansion concrete and shrinkage concrete are considered. The results show that early expansion and early shrinkage concretes have obvious influence on arch dam's early thermal stress; however have less influence on dam center's maximum thermal stress. The longer of expansion period, the smaller of dam center's maximum thermal stress; the final residual thermal stress, which can benefit the concrete's anti-cracking quality.
机译：自生体积变形是混凝土防裂行为的重要参数。基于温度场仿真，进行了混凝土自体积变形对小湾高拱坝热应力影响的敏感性分析。当推测自体积变形时，考虑膨胀混凝土和收缩混凝土。结果表明，早期的膨胀和早期收缩混凝土对拱坝早期热应力的影响显而易见;然而，对大坝中心的最大热应力的影响较小。膨胀时期的较长，大坝中心的最大热应力越小;最终的残余热应力，可以使混凝土的防裂质量有益。

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