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Cast-in-place reinforced concrete large-diameter tubular pile with reinforced pile end and pile forming tool and construction method of cast-in-place reinforced concrete large-diameter tubular pile
The invention aims to provide a cast-in-place reinforced concrete large-diameter tubular pile with a reinforced pile end and a pile forming tool and a construction method of the cast-in-place reinforced concrete large-diameter tubular pile. The pile forming tool comprises a reinforcement cage, a grouting pipe, a pile mold outer pipe, a pile mold inner pipe, a rubber bag, a movable inner support and a valve pile tip. A hollow annular cavity is formed between the pile mold outer pipe and the pile mold inner pipe, and the reinforcement cage is arranged in the annular cavity. A grouting pipe is bound in the main reinforcement direction of the reinforcement cage, a rubber bag is bound at the lower end of the reinforcement cage, and the grouting pipe is communicated with the rubber bag. When concrete is poured, the concrete is injected into the rubber bag at the pile end through the grouting pipe, so that the bearing capacity of the pile foundation is improved. The method is suitable for a soft soil layer, can be constructed to a poor bearing soil layer, and is wide in application range and free of environmental pollution in the construction process. The problems that the pile end of the cast-in-place reinforced concrete large-diameter pipe pile is prone to sediment and low in strength are effectively solved, and the method plays an important role in post-construction settlement control of the cast-in-place reinforced concrete large-diameter pipe pile.
本发明的目的是提供一种桩端增强的现浇钢筋混凝土大直径管桩及其成桩工具和施工方法，成桩工具包括有包括钢筋笼、注浆管、桩模外管、桩模内管、橡胶囊袋、活动内支撑、活瓣桩尖。桩模外管、桩模内管之间形成了一个中空的环形腔体，钢筋笼布置在环形腔体内。在钢筋笼主筋方向上绑扎注浆管，在钢筋笼下端绑扎橡胶囊袋，注浆管与橡胶囊袋连通。浇筑混凝土时，将混凝土通过注浆管注入到桩端的橡胶囊袋中，以提高桩基的承载力。本发明适用于软弱土层中，可施工到较差的持力土层，适用范围广，且施工过程中无环境污染。有效解决了现浇钢筋混凝土大直径管桩桩端易沉渣和强度低的问题，对现浇钢筋混凝土大直径管桩的工后沉降控制起到重要作用。
Cast-in-place reinforced concrete large-diameter tubular pile with reinforced pile end and pile forming tool and construction method of cast-in-place reinforced concrete large-diameter tubular pile
The invention aims to provide a cast-in-place reinforced concrete large-diameter tubular pile with a reinforced pile end and a pile forming tool and a construction method of the cast-in-place reinforced concrete large-diameter tubular pile. The pile forming tool comprises a reinforcement cage, a grouting pipe, a pile mold outer pipe, a pile mold inner pipe, a rubber bag, a movable inner support and a valve pile tip. A hollow annular cavity is formed between the pile mold outer pipe and the pile mold inner pipe, and the reinforcement cage is arranged in the annular cavity. A grouting pipe is bound in the main reinforcement direction of the reinforcement cage, a rubber bag is bound at the lower end of the reinforcement cage, and the grouting pipe is communicated with the rubber bag. When concrete is poured, the concrete is injected into the rubber bag at the pile end through the grouting pipe, so that the bearing capacity of the pile foundation is improved. The method is suitable for a soft soil layer, can be constructed to a poor bearing soil layer, and is wide in application range and free of environmental pollution in the construction process. The problems that the pile end of the cast-in-place reinforced concrete large-diameter pipe pile is prone to sediment and low in strength are effectively solved, and the method plays an important role in post-construction settlement control of the cast-in-place reinforced concrete large-diameter pipe pile.
本发明的目的是提供一种桩端增强的现浇钢筋混凝土大直径管桩及其成桩工具和施工方法，成桩工具包括有包括钢筋笼、注浆管、桩模外管、桩模内管、橡胶囊袋、活动内支撑、活瓣桩尖。桩模外管、桩模内管之间形成了一个中空的环形腔体，钢筋笼布置在环形腔体内。在钢筋笼主筋方向上绑扎注浆管，在钢筋笼下端绑扎橡胶囊袋，注浆管与橡胶囊袋连通。浇筑混凝土时，将混凝土通过注浆管注入到桩端的橡胶囊袋中，以提高桩基的承载力。本发明适用于软弱土层中，可施工到较差的持力土层，适用范围广，且施工过程中无环境污染。有效解决了现浇钢筋混凝土大直径管桩桩端易沉渣和强度低的问题，对现浇钢筋混凝土大直径管桩的工后沉降控制起到重要作用。
Cast-in-place reinforced concrete large-diameter tubular pile with reinforced pile end and pile forming tool and construction method of cast-in-place reinforced concrete large-diameter tubular pile
一种桩端增强的现浇钢筋混凝土大直径管桩及其成桩工具和施工方法
ZHANG RUNHONG (author) / LIU HANLONG (author) / CHEN YUMIN (author) / WU QI (author) / MA KE (author)
2023-10-20
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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