A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
System for grouting pile side sealing and pile tip extrusion grouting of cast-in-place pile and construction method thereof
The invention relates to a cast-in-place pile side slurry sealing and pile end extrusion grouting system and a construction method thereof.The cast-in-place pile side slurry sealing and pile end extrusion grouting system comprises a pile side slurry sealing device and a pile end extrusion grouting device, and the pile side slurry sealing device is arranged on the outer side face of a reinforcement cage of a cast-in-place pile; the upper end face of the pile end extrusion grouting device is fixedly connected with the bottom end of the reinforcement cage, the lower end face of the pile end extrusion grouting device abuts against pile bottom sediment in the sinking process of the reinforcement cage, and the pile bottom sediment is axially and downwards pushed, compacted and compacted through the pile end extrusion grouting device; the pile side slurry sealing device forms a pile side slurry sealing section on the outer side of the reinforcement cage after slurry jacking, high-pressure grouting is conducted on the pile end of the cast-in-place pile and the pile side range below the pile side slurry sealing section through the pile end extrusion grouting device, and grouting reinforcing layers are formed on the pile bottom face and the pile side face. The method has the advantages that the construction process is simple, the flowing direction and the diffusion range of grout injected into the pile end and the pile side can be quantitatively and controllably controlled, then the single-pile bearing capacity of the cast-in-place pile can be greatly improved, and the settlement amount of a foundation pile is reduced.
本发明涉及一种用于灌注桩桩侧封浆及桩端挤压注浆系统及其施工方法，包括桩侧封浆装置和桩端挤压注浆装置，桩侧封浆装置设置于灌注桩的钢筋笼的外侧面；桩端挤压注浆装置的上端面与钢筋笼的底端固定连接，其下端面在钢筋笼沉放过程中与桩底沉渣相抵，并通过桩端挤压注浆装置轴向向下顶推挤密压实桩底沉渣；桩侧封浆装置通过压浆后在钢筋笼外侧形成桩侧封浆段，并通过桩端挤压注浆装置对灌注桩的桩端和桩侧封浆段以下的桩侧范围进行高压注浆且在桩底面和桩侧面形成注浆增强层；本发明具有施工工艺简单，能够定量可控地控制桩端和桩侧位置注入浆液的流动方向和扩散范围，进而可以大幅提高灌注桩的单桩承载力并降低基桩沉降量的优点。
System for grouting pile side sealing and pile tip extrusion grouting of cast-in-place pile and construction method thereof
The invention relates to a cast-in-place pile side slurry sealing and pile end extrusion grouting system and a construction method thereof.The cast-in-place pile side slurry sealing and pile end extrusion grouting system comprises a pile side slurry sealing device and a pile end extrusion grouting device, and the pile side slurry sealing device is arranged on the outer side face of a reinforcement cage of a cast-in-place pile; the upper end face of the pile end extrusion grouting device is fixedly connected with the bottom end of the reinforcement cage, the lower end face of the pile end extrusion grouting device abuts against pile bottom sediment in the sinking process of the reinforcement cage, and the pile bottom sediment is axially and downwards pushed, compacted and compacted through the pile end extrusion grouting device; the pile side slurry sealing device forms a pile side slurry sealing section on the outer side of the reinforcement cage after slurry jacking, high-pressure grouting is conducted on the pile end of the cast-in-place pile and the pile side range below the pile side slurry sealing section through the pile end extrusion grouting device, and grouting reinforcing layers are formed on the pile bottom face and the pile side face. The method has the advantages that the construction process is simple, the flowing direction and the diffusion range of grout injected into the pile end and the pile side can be quantitatively and controllably controlled, then the single-pile bearing capacity of the cast-in-place pile can be greatly improved, and the settlement amount of a foundation pile is reduced.
本发明涉及一种用于灌注桩桩侧封浆及桩端挤压注浆系统及其施工方法，包括桩侧封浆装置和桩端挤压注浆装置，桩侧封浆装置设置于灌注桩的钢筋笼的外侧面；桩端挤压注浆装置的上端面与钢筋笼的底端固定连接，其下端面在钢筋笼沉放过程中与桩底沉渣相抵，并通过桩端挤压注浆装置轴向向下顶推挤密压实桩底沉渣；桩侧封浆装置通过压浆后在钢筋笼外侧形成桩侧封浆段，并通过桩端挤压注浆装置对灌注桩的桩端和桩侧封浆段以下的桩侧范围进行高压注浆且在桩底面和桩侧面形成注浆增强层；本发明具有施工工艺简单，能够定量可控地控制桩端和桩侧位置注入浆液的流动方向和扩散范围，进而可以大幅提高灌注桩的单桩承载力并降低基桩沉降量的优点。
System for grouting pile side sealing and pile tip extrusion grouting of cast-in-place pile and construction method thereof
用于灌注桩桩侧封浆及桩端挤压注浆系统及其施工方法
LIU ZHONG (author) / HE PENGPENG (author) / ZHANG CHUFU (author) / LYU MEIDONG (author)
2022-04-15
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
| European Patent Office | 2020
Post-grouting device for pile side of cast-in-place pile
| European Patent Office | 2023
Pile end bottom grouting device, cast-in-place pile and construction method of cast-in-place pile
| European Patent Office | 2021