A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Precast pile end sinking assisting device
The invention discloses a prefabricated pile end sinking assisting device which comprises a pile tip arranged at the prefabricated pile end, and a static pressure grouting device is arranged in the pile tip in a penetrating mode. The static pressure grouting device comprises a hole opening pipe, a plurality of holes are formed in the surface of the hole opening pipe, a fixing piece is arranged on the outer side of the hole opening pipe, and diaphragms are arranged between the hole opening pipe and the fixing piece and on the outer side of the fixing piece respectively. And a grouting pipe communicated with the perforated pipe is arranged in the precast pile in a penetrating manner. According to the method, the pile does not need to be sunk after hole guiding in advance, bentonite slurry or water can be injected into the static pressure grouting device, the strength of a soil body at the pile end can be lubricated and weakened, the pile pressing dynamic resistance of the precast pile is reduced, and therefore the construction speed is increased, and the construction cost is reduced; furthermore, after pile pressing is completed, the static pressure grouting device can be used for grouting the pile end of the precast pile, and therefore the bearing capacity of the pile end and the pile side of the precast pile is improved.
本发明公开了预制桩桩端助沉装置，包括设置在预制桩桩端的桩尖，所述桩尖内穿设有静压注浆装置；所述静压注浆装置包括一表面开设若干开孔的开孔管，所述开孔管的外侧设置有固定片，所述开孔管和所述固定片之间、以及所述固定片的外侧分别设置有隔膜；所述预制桩内穿设有一与所述开孔管连通的注浆管。本发明无需预先引孔后再沉桩，静压注浆装置可注入膨润土浆液或水，润滑和削弱桩端土体强度，减少了预制桩的压桩动阻力，从而提高了施工速度且降低了施工成本；进一步地，在压桩完成后，可利用静压注浆装置进行预制桩的桩端注浆，从而提高了预制桩的桩端和桩侧承载力。
Precast pile end sinking assisting device
The invention discloses a prefabricated pile end sinking assisting device which comprises a pile tip arranged at the prefabricated pile end, and a static pressure grouting device is arranged in the pile tip in a penetrating mode. The static pressure grouting device comprises a hole opening pipe, a plurality of holes are formed in the surface of the hole opening pipe, a fixing piece is arranged on the outer side of the hole opening pipe, and diaphragms are arranged between the hole opening pipe and the fixing piece and on the outer side of the fixing piece respectively. And a grouting pipe communicated with the perforated pipe is arranged in the precast pile in a penetrating manner. According to the method, the pile does not need to be sunk after hole guiding in advance, bentonite slurry or water can be injected into the static pressure grouting device, the strength of a soil body at the pile end can be lubricated and weakened, the pile pressing dynamic resistance of the precast pile is reduced, and therefore the construction speed is increased, and the construction cost is reduced; furthermore, after pile pressing is completed, the static pressure grouting device can be used for grouting the pile end of the precast pile, and therefore the bearing capacity of the pile end and the pile side of the precast pile is improved.
本发明公开了预制桩桩端助沉装置，包括设置在预制桩桩端的桩尖，所述桩尖内穿设有静压注浆装置；所述静压注浆装置包括一表面开设若干开孔的开孔管，所述开孔管的外侧设置有固定片，所述开孔管和所述固定片之间、以及所述固定片的外侧分别设置有隔膜；所述预制桩内穿设有一与所述开孔管连通的注浆管。本发明无需预先引孔后再沉桩，静压注浆装置可注入膨润土浆液或水，润滑和削弱桩端土体强度，减少了预制桩的压桩动阻力，从而提高了施工速度且降低了施工成本；进一步地，在压桩完成后，可利用静压注浆装置进行预制桩的桩端注浆，从而提高了预制桩的桩端和桩侧承载力。
Precast pile end sinking assisting device
预制桩桩端助沉装置
JIANG YIPING (author) / CHEN HONGSHENG (author) / XIE PAN (author) / ZHU YUEMING (author) / HAN XIAO (author) / CHEN YAHUI (author)
2025-01-07
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
Elastic clamp for assisting pile sinking and pile sinking tool
| European Patent Office | 2024