Construction method for extruding and expanding foundation in soft foundation area

Abstract

The invention discloses a construction method for extruding and expanding a foundation in a soft foundation area, and belongs to the technical field of construction of extruding and expanding foundations in soft foundation areas. The construction method comprises the following steps that 1, according to the requirements of a design drawing, the size and depth of foundation drilling and drilling equipment used are determined; 2, measurement and positioning are conducted, the drilling position is determined, the drilling equipment is placed in place, foundation drilling is conducted till the depth is 200mm or above the design depth value and the remaining depth is 200mm, and construction continues after hole cleaning and measuring and setting; 3, after hole forming, a hydraulic hole expanding device is placed for correction, a hydraulic conveyor is used for hole expanding, the preset width and stress are achieved, and the extruding and expanding effect is formed; and 4, after extruding and expanding are conducted in place, the hydraulic hole expanding device is taken out, a foundation reinforcement cage is placed, foundation concrete is poured, and the extruding and expanding foundation is formed. According to the construction method, the foundation construction efficiency can be effectively improved, the construction period is shortened, and cost is saved; and meanwhile, the pile length is shortened, the pile diameter or the pile number is reduced, the manufacturing cost is low, and the settling amount is small.

Description

technical field [0001] The invention relates to the technical field of construction of extruded and expanded foundations in soft ground areas, and more specifically relates to a construction method for extruded and expanded foundations in soft ground areas. Background technique [0002] Traditional foundation construction usually uses bored piles for foundation treatment or requires large-scale slotting construction, and a large number of formwork is configured. The process is complicated, the cost is high, the settlement is large, the construction period is long, the construction efficiency is low, and the labor cost is large. These issues need to be further resolved. Contents of the invention [0003] 1. Problems to be solved [0004] Aiming at the defects and deficiencies of the existing technology, the present invention provides a construction method of extrusion and expansion in soft ground areas, which eliminates the steps of slotting construction, formwork support,...

AI Technical Summary

Problems solved by technology

[0002] Traditional foundation construction usually uses bored piles for foundation treatment or requires large-scale slotting construction, and a large number of formwork is configured. The process is complicated, the cost is high, the settlement is large, the construction period is long, the construction efficiency is low, and the labor cost is large. These problems need to be further resolved

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