冷水管布置线形及设置参数对承台水化热分析的影响
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摘要
以重庆市寨子坪大桥为工程背景,研究了管冷的布置线形、布置间距、入水方向以及入水温度对承台水化热分析的影响。通过研究冷水管的三种布置形状和两种入水方式,同时改变冷水管布置间距、入水水温等参数,得到了冷水管布置形状和入水方式对承台水化热分析的影响规律,并对冷水管布置间距和入水水温提出了建议取值。
Taking the Zhaiziping Bridge in Chongqing as the engineering background, the effects of tube cooling layout line, arrangement spacing, inlet water direction and inlet water temperature on the hydration heat analysis of the cap are studied. By studying the three layout shapes of the cold water pipe and the two water inlet modes, and changing the parameters such as the interval of the cold water pipe and the water temperature of the water inlet, the law of influence of the layout line of the cold water pipe and the water inlet mode on the hydration heat analysis of the cap is obtained.Suggested values are proposed for the spacing of the cold water pipes and the temperature of the incoming water.
Taking the Zhaiziping Bridge in Chongqing as the engineering background, the effects of tube cooling layout line, arrangement spacing, inlet water direction and inlet water temperature on the hydration heat analysis of the cap are studied. By studying the three layout shapes of the cold water pipe and the two water inlet modes, and changing the parameters such as the interval of the cold water pipe and the water temperature of the water inlet, the law of influence of the layout line of the cold water pipe and the water inlet mode on the hydration heat analysis of the cap is obtained.Suggested values are proposed for the spacing of the cold water pipes and the temperature of the incoming water.
引文
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[2]佘娜,张思颖.低温升低收缩磷渣大体积混凝土温度应力监测数值仿真分析[J].公路工程,2017,42(2):309-313.
[3]朱伯芳.大体积混凝土温度应力及温度控制[M].北京:中国电力出版社,1999.
[4]刘伟.矮塔斜拉桥承台大体积混凝土水化热分析与裂缝预防[J].施工技术,2014,43(增刊):204-207.
[5]李友好,何大治.桥墩承台大体积混凝土施工期温度控制与监测[J].华北水利水电学院学报,2011,32(4):56-60.
[6]张明,吴定俊,李奇,等.昼夜温差大地区承台水化热温度场实测与模拟[J].结构工程师,2012,28(2):53-57.
[7]张宏祥,李长平.大体积混凝土利用冷水管降温相关参数的确定[J].森林工程,2015,31(6):122-125.
[8]刘耀东,白应华,余天庆,等.基于MIDAS的大体积混凝土承台管冷技术优化研究[J].混凝土,2009(9):120-112.
[9]宋福春,刘策.考虑管冷的大体积混凝土水化热分析[J].沈阳建筑大学学报,2015,31(1):95-101.
[10]郭三元,黄彩萍,肖衡林.后河大桥大体积混凝土承台冷管控制及优化方案[J].公路工程,2016,41(2):136-139.
[11]李之达,孙绪涛.考虑管冷的大体积混凝土水化热初期温度场研究[J].重庆交通大学学报,2018,37(6):1-7.