Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Crack control method for tunnel molded lining concrete
The invention discloses a crack control method for tunnel molded lining concrete. The crack control method comprises the following steps that a temperature stress simulation finite element calculation model is established according to the size of a tunnel lining structure; analyzing lining concrete cracking risk coefficients corresponding to different working condition parameter optimization combinations through a temperature stress simulation finite element calculation model; the anti-crack concrete is prepared by uniformly mixing and stirring the hydration temperature rise inhibitor, the calcium-magnesium composite expanding agent, the mineral admixture, the cement, the gravel and the water according to a certain proportion. After construction of the tunnel inverted arch and the inverted arch filling layer is completed, the mold entering temperature in the working condition parameters is adjusted and controlled, and the prepared anti-crack concrete is poured on the inverted arch at a time to form a lining concrete layer; and after anti-crack concrete pouring is completed, formwork removal and moisturizing maintenance after formwork removal are conducted according to the formwork removal time representing the formwork removal maintenance technology and the parameter requirements for maintenance after formwork removal.
本发明公开了一种隧道模筑衬砌混凝土的控裂方法，还包括如下步骤：按照隧道衬砌结构尺寸建立温度应力仿真有限元计算模型；通过温度应力仿真有限元计算模型分析不同工况参数优化组合所对应的衬砌混凝土开裂风险系数；按一定比例将水化温升抑制剂、钙镁复合膨胀剂、矿物掺合料、水泥、砂石和水混合搅拌均匀制得抗裂混凝土；待隧道仰拱及仰拱填充层施作完毕后，调整控制工况参数中入模温度将所制得抗裂混凝土一次性浇筑到仰拱之上形成衬砌混凝土层；待抗裂混凝土浇筑完成后，按照表征拆模养护工艺的拆模时间和拆模后养护的参数要求进行拆模和拆模后保湿养护。
Crack control method for tunnel molded lining concrete
The invention discloses a crack control method for tunnel molded lining concrete. The crack control method comprises the following steps that a temperature stress simulation finite element calculation model is established according to the size of a tunnel lining structure; analyzing lining concrete cracking risk coefficients corresponding to different working condition parameter optimization combinations through a temperature stress simulation finite element calculation model; the anti-crack concrete is prepared by uniformly mixing and stirring the hydration temperature rise inhibitor, the calcium-magnesium composite expanding agent, the mineral admixture, the cement, the gravel and the water according to a certain proportion. After construction of the tunnel inverted arch and the inverted arch filling layer is completed, the mold entering temperature in the working condition parameters is adjusted and controlled, and the prepared anti-crack concrete is poured on the inverted arch at a time to form a lining concrete layer; and after anti-crack concrete pouring is completed, formwork removal and moisturizing maintenance after formwork removal are conducted according to the formwork removal time representing the formwork removal maintenance technology and the parameter requirements for maintenance after formwork removal.
本发明公开了一种隧道模筑衬砌混凝土的控裂方法，还包括如下步骤：按照隧道衬砌结构尺寸建立温度应力仿真有限元计算模型；通过温度应力仿真有限元计算模型分析不同工况参数优化组合所对应的衬砌混凝土开裂风险系数；按一定比例将水化温升抑制剂、钙镁复合膨胀剂、矿物掺合料、水泥、砂石和水混合搅拌均匀制得抗裂混凝土；待隧道仰拱及仰拱填充层施作完毕后，调整控制工况参数中入模温度将所制得抗裂混凝土一次性浇筑到仰拱之上形成衬砌混凝土层；待抗裂混凝土浇筑完成后，按照表征拆模养护工艺的拆模时间和拆模后养护的参数要求进行拆模和拆模后保湿养护。
Crack control method for tunnel molded lining concrete
一种隧道模筑衬砌混凝土的控裂方法
XIE BIAO (Autor:in) / WANG YUJIANG (Autor:in) / YANG RUI (Autor:in) / LIU JIAPING (Autor:in) / MENG QINGYU (Autor:in) / HUO FEI (Autor:in) / WU QIANG (Autor:in) / WANG XU (Autor:in) / ZHAO DUO (Autor:in) / XI BOYANG (Autor:in)
07.01.2025
Patent
Elektronische Ressource
Chinesisch
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