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Settlement control method for PS-C double-grouting micro piles of red-layer high-fill foundation
The invention belongs to the technical field of red-layer region reinforcement, discloses a red-layer high-fill foundation PS-C double-grouting micro pile settlement control method, and aims to solve the problems that the pouring quality is poor and the settlement amount exceeds a reasonable range due to the fact that the grouting amount in a micro steel pipe pile cannot be accurately obtained in a red-layer high-fill. The method comprises the steps of surveying and setting out, drilling to form a hole, cleaning a pile hole and implanting a micro steel pipe, wherein a grouting pipe is mounted in the micro steel pipe; the method further comprises the following steps: (1) filling granite; and (2) grout is injected through the grouting pipe. On the one hand, the underground grouting condition can be accurately obtained, then the grouting pipe is lifted, and the purpose of improving the pouring quality is achieved, on the other hand, a double-pipe grouting mode is adopted, the permeability of grout can be improved, and therefore the bonding tightness of the grout and a red layer around the steel pipe pile is improved, the settlement amount is further reduced, and the reinforcing quality is improved.
本发明属于红层地区加固技术领域，公开了一种红层高填方地基PS‑C双注浆微型桩沉降控制方法，为了解决红层高填方由于无法准确获取微型钢管桩内的注浆量而导致浇筑质量差、沉降量超出合理范围的问题。本发明包括测量放线、钻进成孔、桩孔清理、植入微型钢管，所述微型钢管内安装有注浆管；还包括如下步骤：(1)填充米石；(2)通过注浆管注入浆液。本发明一方面能够准确获取地下注浆情况进而提升注浆管达到提高浇筑质量的目的，另一方面采用双管注浆的方式，能够增加浆液的渗透性能，从而提高与钢管桩周围红层的粘结的紧固性，进一步减少沉降量，提高加固的质量。
Settlement control method for PS-C double-grouting micro piles of red-layer high-fill foundation
The invention belongs to the technical field of red-layer region reinforcement, discloses a red-layer high-fill foundation PS-C double-grouting micro pile settlement control method, and aims to solve the problems that the pouring quality is poor and the settlement amount exceeds a reasonable range due to the fact that the grouting amount in a micro steel pipe pile cannot be accurately obtained in a red-layer high-fill. The method comprises the steps of surveying and setting out, drilling to form a hole, cleaning a pile hole and implanting a micro steel pipe, wherein a grouting pipe is mounted in the micro steel pipe; the method further comprises the following steps: (1) filling granite; and (2) grout is injected through the grouting pipe. On the one hand, the underground grouting condition can be accurately obtained, then the grouting pipe is lifted, and the purpose of improving the pouring quality is achieved, on the other hand, a double-pipe grouting mode is adopted, the permeability of grout can be improved, and therefore the bonding tightness of the grout and a red layer around the steel pipe pile is improved, the settlement amount is further reduced, and the reinforcing quality is improved.
本发明属于红层地区加固技术领域，公开了一种红层高填方地基PS‑C双注浆微型桩沉降控制方法，为了解决红层高填方由于无法准确获取微型钢管桩内的注浆量而导致浇筑质量差、沉降量超出合理范围的问题。本发明包括测量放线、钻进成孔、桩孔清理、植入微型钢管，所述微型钢管内安装有注浆管；还包括如下步骤：(1)填充米石；(2)通过注浆管注入浆液。本发明一方面能够准确获取地下注浆情况进而提升注浆管达到提高浇筑质量的目的，另一方面采用双管注浆的方式，能够增加浆液的渗透性能，从而提高与钢管桩周围红层的粘结的紧固性，进一步减少沉降量，提高加固的质量。
Settlement control method for PS-C double-grouting micro piles of red-layer high-fill foundation
一种红层高填方地基PS-C双注浆微型桩沉降控制方法
CHEN LONGFEI (author) / PENG TAO (author) / DENG AN (author) / HE FANMIN (author) / LI YAN (author) / ZHANG XIAOXI (author)
2023-11-21
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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