Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Cast-in-situ bored pile position crossing type drilling construction method
The invention discloses a cast-in-situ bored pile position spanning type drilling construction method, and particularly relates to a construction method for realizing spanning alternate construction by optimizing the plane construction sequence of cast-in-situ bored piles and adopting a piling mode of piling one pile every two piles according to the solidification rate of cast-in-situ concrete on site and carrying out reasonable interpenetration on the pile positions of the cast-in-situ bored piles. By means of the method, the problems of disturbance and segregation of concrete in the adjacent cast-in-place piles and even collapse of hole wall soil in the drilling process are solved, the influence on the shape of a reinforcement cage is reduced, the damage probability of the cast-in-place piles is reduced, meanwhile, the pile position precision is effectively controlled, the problem that the tail end pile position deviation is large due to pile-by-pile error superposition is solved, and the defect risk is reduced. The problems that when the cast-in-place pile is continuously constructed in the soft stratum, concrete of the adjacent pile is extremely prone to disturbance and segregation, and even the construction risk of hole wall collapse exists are solved.
本发明公开了一种钻孔灌注桩桩位跨越式钻孔施工方法，通过优化钻孔灌注桩平面施工顺序，根据现场现浇混凝土凝固速率，采用隔二打一的打桩方式，对灌注桩桩位进行合理穿插实现跨越交替施工的施工方法，通过此方法避免在钻孔过程中相邻灌注桩内混凝土发生扰动离析甚至孔壁土体坍塌的问题，减小对钢筋笼形态的影响和降低灌注桩损坏概率，同时有效控制桩位精度，避免逐桩误差叠加导致末端桩位偏差较大的问题，降低缺陷风险。本发明解决了在松软地层中连续施工灌注桩时，极易导致临桩混凝土扰动离析，甚至存在孔壁坍塌的施工风险的问题。
Cast-in-situ bored pile position crossing type drilling construction method
The invention discloses a cast-in-situ bored pile position spanning type drilling construction method, and particularly relates to a construction method for realizing spanning alternate construction by optimizing the plane construction sequence of cast-in-situ bored piles and adopting a piling mode of piling one pile every two piles according to the solidification rate of cast-in-situ concrete on site and carrying out reasonable interpenetration on the pile positions of the cast-in-situ bored piles. By means of the method, the problems of disturbance and segregation of concrete in the adjacent cast-in-place piles and even collapse of hole wall soil in the drilling process are solved, the influence on the shape of a reinforcement cage is reduced, the damage probability of the cast-in-place piles is reduced, meanwhile, the pile position precision is effectively controlled, the problem that the tail end pile position deviation is large due to pile-by-pile error superposition is solved, and the defect risk is reduced. The problems that when the cast-in-place pile is continuously constructed in the soft stratum, concrete of the adjacent pile is extremely prone to disturbance and segregation, and even the construction risk of hole wall collapse exists are solved.
本发明公开了一种钻孔灌注桩桩位跨越式钻孔施工方法，通过优化钻孔灌注桩平面施工顺序，根据现场现浇混凝土凝固速率，采用隔二打一的打桩方式，对灌注桩桩位进行合理穿插实现跨越交替施工的施工方法，通过此方法避免在钻孔过程中相邻灌注桩内混凝土发生扰动离析甚至孔壁土体坍塌的问题，减小对钢筋笼形态的影响和降低灌注桩损坏概率，同时有效控制桩位精度，避免逐桩误差叠加导致末端桩位偏差较大的问题，降低缺陷风险。本发明解决了在松软地层中连续施工灌注桩时，极易导致临桩混凝土扰动离析，甚至存在孔壁坍塌的施工风险的问题。
Cast-in-situ bored pile position crossing type drilling construction method
钻孔灌注桩桩位跨越式钻孔施工方法
XU ZHIMIN (Autor:in) / XIE WENQIANG (Autor:in) / HOU HAILIN (Autor:in) / HUANG SHANGXIN (Autor:in) / LI YUZHAO (Autor:in) / FAN DONGDONG (Autor:in) / WANG GAO (Autor:in)
27.06.2023
Patent
Elektronische Ressource
Chinesisch
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