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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

发布时间:2018-05-23 23:29

  本文选题:大体积混凝土 + 磷渣 ; 参考:《公路工程》2017年02期


【摘要】:以重庆某大桥主墩承台为对象,采用C40低温升低收缩磷渣大体积混凝土,利用有限元软件对其温度应力监测数值进行了仿真研究。结果表明:利用有限元软件,仿真计算低温升低收缩磷渣大体积混凝土水化热,可对混凝土水化热实际情况进行较好的模拟及预测。利用有限元软件,对大桥4#承台水化热进行仿真分析,通过对冷却管采取降温措施,发现在承台内部,最高温为71.25℃,最大的内外温差为18.15℃,水化热得到控制,说明采用冷却管降温可行。通过检测拆模后大桥承台的外观,发现无温度裂缝产生,说明采取合理措施控制大体积混凝土水化热温升,能有效控制温度裂缝的产生。
[Abstract]:Taking the cap of the main pier of a Chongqing bridge as an example, the temperature stress monitoring value of C40 low shrinkage phosphorus slag mass concrete was simulated by using finite element software. The results show that the hydration heat of mass concrete with low temperature rise and low shrinkage can be simulated and predicted by using finite element software. By using the finite element software, the hydration heat of the abutment of the bridge is simulated and analyzed. Through the cooling measures of the cooling pipe, it is found that the maximum temperature is 71.25 鈩,

本文编号:1926812

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