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A platform for research: civil engineering, architecture and urbanism
Construction method for reinforcing pile-soil composite foundation
The invention discloses a construction method for reinforcing a pile-soil composite foundation. The method includes the steps that a centroid position of a soil body between minimum unit piles is calculated according to a pile arrangement form of the pile-soil composite foundation, a grouting hole is dug in the centroid position of the soil body between the piles by utilizing a Luoyang shovel, and the situation that the grouting hole is vertically formed is ensured; a grouting pipe of a grouting system is vertically placed in the center of the grouting hole and directly reaches the bottom of the grouting hole, packing is placed in the grouting hole around the outer wall of the grouting pipe for sealing, and the grouting hole is divided into an upper half portion and a lower half portion through the packing; and the upper half portion of the grouting hole is backfilled, the grouting system is started to conduct self-permeation grouting of water glass or alkali liquor into the grouting hole, and a small pile reinforcing body is formed, so that the pile-soil composite foundation is reinforced by the small pile reinforcing body. According to the construction method for reinforcing the pile-soil composite foundation, on the premise that loess collapsibility is not eliminated, the pile spacing of existing plain concrete piles is kept unchanged, and the small pile reinforcing body is formed at the center of the soil body between the piles by adopting the simple, convenient and low-cost method, so that the working performance of the composite foundation is effectively improved.
本发明公开了一种用于对桩土复合地基进行加固的施工方法，由以下步骤组成：根据桩土复合地基的布桩形式计算最小单元桩间土体的形心位置，利用洛阳铲在桩间土体的形心位置挖出注浆孔，保证注浆孔竖向开设，将注浆系统的注浆管竖直地放入注浆孔中心，并直达注浆孔的底部，在注浆孔内绕着注浆管外壁放入盘根进行密封，使得盘根将注浆孔分为上半部和下半部，将注浆孔的上半部进行回填，打开注浆系统向注浆孔内自渗注浆水玻璃或碱液，形成小桩加固体，使得小桩加固体对桩土复合地基进行加固。本发明在不消除黄土湿陷性的前题下，保持现有的素混凝土桩桩间距不变，采用简便低廉的方法在桩间土体形心位置形成小桩加固体，从而有效提高复合地基工作性能。
Construction method for reinforcing pile-soil composite foundation
The invention discloses a construction method for reinforcing a pile-soil composite foundation. The method includes the steps that a centroid position of a soil body between minimum unit piles is calculated according to a pile arrangement form of the pile-soil composite foundation, a grouting hole is dug in the centroid position of the soil body between the piles by utilizing a Luoyang shovel, and the situation that the grouting hole is vertically formed is ensured; a grouting pipe of a grouting system is vertically placed in the center of the grouting hole and directly reaches the bottom of the grouting hole, packing is placed in the grouting hole around the outer wall of the grouting pipe for sealing, and the grouting hole is divided into an upper half portion and a lower half portion through the packing; and the upper half portion of the grouting hole is backfilled, the grouting system is started to conduct self-permeation grouting of water glass or alkali liquor into the grouting hole, and a small pile reinforcing body is formed, so that the pile-soil composite foundation is reinforced by the small pile reinforcing body. According to the construction method for reinforcing the pile-soil composite foundation, on the premise that loess collapsibility is not eliminated, the pile spacing of existing plain concrete piles is kept unchanged, and the small pile reinforcing body is formed at the center of the soil body between the piles by adopting the simple, convenient and low-cost method, so that the working performance of the composite foundation is effectively improved.
本发明公开了一种用于对桩土复合地基进行加固的施工方法，由以下步骤组成：根据桩土复合地基的布桩形式计算最小单元桩间土体的形心位置，利用洛阳铲在桩间土体的形心位置挖出注浆孔，保证注浆孔竖向开设，将注浆系统的注浆管竖直地放入注浆孔中心，并直达注浆孔的底部，在注浆孔内绕着注浆管外壁放入盘根进行密封，使得盘根将注浆孔分为上半部和下半部，将注浆孔的上半部进行回填，打开注浆系统向注浆孔内自渗注浆水玻璃或碱液，形成小桩加固体，使得小桩加固体对桩土复合地基进行加固。本发明在不消除黄土湿陷性的前题下，保持现有的素混凝土桩桩间距不变，采用简便低廉的方法在桩间土体形心位置形成小桩加固体，从而有效提高复合地基工作性能。
Construction method for reinforcing pile-soil composite foundation
一种用于对桩土复合地基进行加固的施工方法
JIN XIN (author) / WANG TIEXING (author) / QIU ZIHAN (author)
2021-06-18
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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