水库溢洪道施工温控方案数值模拟与优化研究
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摘要
寒冷地区混凝土施工,保温防裂是大体积水工混凝土的主要控制指标。文章采用混凝土温度场有限元计算方法,以猴山水库溢洪道工程为案例,针对不同混凝土浇筑季节、不同保温板厚度及处理措施的4种施工方案进行了数值模拟,通过对比分析溢洪道关键部位温度场和温度应力,确定了溢洪道最优温控标准和温控防裂措施,为设计和施工提供了有力技术支撑。
Thermal insulation and crack prevention are main control indexes of mass hydraulic concrete during concrete construction in cold area. Concrete temperature field finite element calculation method is adopted in the paper. Houshan Reservoir spillway project is adopted as an example. Numerical simulation is implemented for four construction plans aiming at different concrete pouring seasons, different insulation board thicknesses and treatment measures. The optimal temperature control standards and thermal crack control measures of the spillway are determined by comparatively analyzing temperature fields and temperature stress of key parts in the spillway, thereby providing powerful technical support for design and construction.
Thermal insulation and crack prevention are main control indexes of mass hydraulic concrete during concrete construction in cold area. Concrete temperature field finite element calculation method is adopted in the paper. Houshan Reservoir spillway project is adopted as an example. Numerical simulation is implemented for four construction plans aiming at different concrete pouring seasons, different insulation board thicknesses and treatment measures. The optimal temperature control standards and thermal crack control measures of the spillway are determined by comparatively analyzing temperature fields and temperature stress of key parts in the spillway, thereby providing powerful technical support for design and construction.
引文
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[3] 杨林.青山水库溢洪道混凝土温控防裂措施[J].水利规划与设计,2016(5):86-88.
[4] 邵相伟,杜志达.考虑入仓因素的碾压混凝土重力坝施工模拟研究[J].水利技术监督,2017(4):90-93.
[5] SL 319—2005 混凝土重力坝设计规范[S].北京:中国水利水电出版社,2005.
[6] SL 282—2003 混凝土拱坝设计规范[S].北京:中国水利水电出版社,2003.
[7] 王福林,杜士斌.严寒地区碾压混凝土重力坝的温度裂缝及及其防治[J].水利水电技术,2001(1):60-62.
[8] 李宏伟.碾压混凝土大坝施工温度控制措施与效果[J].水利技术监督,2014(5):60-63.
[9] 张越.水利工程大体积混凝土温控防裂措施探究[J].水利规划与设计,2015(4):60-62,110.
[2] 毛远辉,侍克斌,牛景太.寒冷干旱地区高碾压混凝土坝的温控研究初探[J].水利科技与经济,2006,12(4):255-256.
[3] 杨林.青山水库溢洪道混凝土温控防裂措施[J].水利规划与设计,2016(5):86-88.
[4] 邵相伟,杜志达.考虑入仓因素的碾压混凝土重力坝施工模拟研究[J].水利技术监督,2017(4):90-93.
[5] SL 319—2005 混凝土重力坝设计规范[S].北京:中国水利水电出版社,2005.
[6] SL 282—2003 混凝土拱坝设计规范[S].北京:中国水利水电出版社,2003.
[7] 王福林,杜士斌.严寒地区碾压混凝土重力坝的温度裂缝及及其防治[J].水利水电技术,2001(1):60-62.
[8] 李宏伟.碾压混凝土大坝施工温度控制措施与效果[J].水利技术监督,2014(5):60-63.
[9] 张越.水利工程大体积混凝土温控防裂措施探究[J].水利规划与设计,2015(4):60-62,110.