A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Composite pile foundation
The invention provides a composite pile foundation which comprises a precast pile and a pile foundation, the precast pile comprises a pile frame, the pile frame comprises a keel frame and a grouting floral tube, the grouting floral tube comprises a main pipe fitting and a plurality of branch pipe fittings, and each branch pipe fitting is connected with the main pipe fitting; all the branch pipe fittings are sequentially arranged at equal intervals from top to bottom along a spiral track, and the included angle formed by every two adjacent branch pipe fittings is 90 degrees. Concrete is poured on the pile frame to form a precast pile; after the precast pile is driven into original-state foundation soil, compaction grouting is conducted from a grouting opening of the main pipe fitting, slurry for compaction grouting is sprayed out through the main pipe fitting and the branch pipe fittings, soil particles and cracks of the original-state foundation soil are cemented into a pile side consolidated soil body through the slurry, and the pile side consolidated soil body and the precast pile form a composite pile foundation. Compared with an existing precast pile, the composite pile foundation has the advantages that the negative influence caused by the soil squeezing effect is effectively reduced, and the vertical bearing capacity and the horizontal bearing capacity of the composite pile foundation are improved.
本发明提供一种复合桩基，包括:预制桩：所述预制桩包括桩架，所述桩架包括龙骨架和注浆花管，注浆花管包括主干管件和多个支管件，每个支管件与主干管件连接；所有的支管件沿着螺旋轨迹由上至下依次等间隔设置，相邻的两个支管件所形成的夹角为90度；在桩架上浇筑混凝土，构成预制桩；将预制桩打入原状地基土中后，从主干管件的注浆口进行压密注浆，压密注浆的浆液经过主干管件和支管件喷出，浆液使得原状地基土的土粒与裂隙胶结成桩侧固结土体，桩侧固结土体与预制桩，构成复合桩基。本发明的复合桩基相较于现有的预制桩，有效地降低了挤土效应带来的负面影响，提高了复合桩基的竖向承载力和水平承载力。
Composite pile foundation
The invention provides a composite pile foundation which comprises a precast pile and a pile foundation, the precast pile comprises a pile frame, the pile frame comprises a keel frame and a grouting floral tube, the grouting floral tube comprises a main pipe fitting and a plurality of branch pipe fittings, and each branch pipe fitting is connected with the main pipe fitting; all the branch pipe fittings are sequentially arranged at equal intervals from top to bottom along a spiral track, and the included angle formed by every two adjacent branch pipe fittings is 90 degrees. Concrete is poured on the pile frame to form a precast pile; after the precast pile is driven into original-state foundation soil, compaction grouting is conducted from a grouting opening of the main pipe fitting, slurry for compaction grouting is sprayed out through the main pipe fitting and the branch pipe fittings, soil particles and cracks of the original-state foundation soil are cemented into a pile side consolidated soil body through the slurry, and the pile side consolidated soil body and the precast pile form a composite pile foundation. Compared with an existing precast pile, the composite pile foundation has the advantages that the negative influence caused by the soil squeezing effect is effectively reduced, and the vertical bearing capacity and the horizontal bearing capacity of the composite pile foundation are improved.
本发明提供一种复合桩基，包括:预制桩：所述预制桩包括桩架，所述桩架包括龙骨架和注浆花管，注浆花管包括主干管件和多个支管件，每个支管件与主干管件连接；所有的支管件沿着螺旋轨迹由上至下依次等间隔设置，相邻的两个支管件所形成的夹角为90度；在桩架上浇筑混凝土，构成预制桩；将预制桩打入原状地基土中后，从主干管件的注浆口进行压密注浆，压密注浆的浆液经过主干管件和支管件喷出，浆液使得原状地基土的土粒与裂隙胶结成桩侧固结土体，桩侧固结土体与预制桩，构成复合桩基。本发明的复合桩基相较于现有的预制桩，有效地降低了挤土效应带来的负面影响，提高了复合桩基的竖向承载力和水平承载力。
Composite pile foundation
复合桩基
LI XIAOQI (author) / HUA PENGFEI (author) / WAN LIPIAO (author)
2023-07-07
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
| European Patent Office | 2021
Foundation engineering composite pile and pile foundation construction method
| European Patent Office | 2022
Foundation engineering composite pile and pile foundation construction method
| European Patent Office | 2023