Soft soil foundation reinforcing method based on cement concrete cored piles

Abstract

The invention discloses a soft soil foundation reinforcing method based on cement concrete cored piles. Multiple cement concrete cored piles, vertically distributed, are adopted to reinforce a soft soil foundation; and the method comprises the steps of: (1) prefabrication of the cored piles; (2) conveying of the cored piles; and (3) reinforcement of the foundation: the cement concrete cored pilesare constructed by adopting an integrated cored pile machine; and when any one cement concrete cored pile is constructed, six steps of placement of the pile machine in place, construction of cement stirring piles, shifting of the pile machine, installation of the cored piles, vertical placement of the cored piles and pressing of the piles are carried out. The method is simple in step, reasonable in design, convenient for construction, high in construction efficiency and excellent in use effect; after prefabrication of all the cored piles, the integrated cored pile machine finishes the construction of the cement stirring piles in the cement concrete cored piles and the pressing process of the cored piles, so that the construction speed is high; and the verticality of the cored piles in thepile pressing process is easily controlled, so that the quality of the formed cement concrete cored piles can be effectively guaranteed, and the reinforcing effect of the soft soil foundation is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of foundation reinforcement construction, and in particular relates to a soft soil foundation reinforcement method based on cement concrete cored piles. Background technique [0002] Soft soil refers to fine-grained soil with high natural water content, large void ratio, high compressibility, and low shear strength deposited in coastal areas, lakes, valleys, and river beaches. The mixing pile method is an existing soft soil foundation treatment (also known as soft soil foundation reinforcement) method. The mixing pile method uses cement mixing piles (also known as cement-soil mixing piles) to reinforce soft soil foundations. The cement is used as the main agent of the curing agent, and the cement is sprayed into the soil with a mixing pile machine and fully stirred, so that a series of physical and chemical reactions between the cement and the soil will occur, and the soft soil will be hardened to improve th...

AI Technical Summary

Problems solved by technology

At present, when constructing cored mixing piles, the cement mixing piles are firstly constructed with a mixing pile machine, and then the pre-processed core piles are pressed into the cement mixing piles with a pile driver or pile pressing equipment added to the excavator. Therefore, it is necessary to configure pile pressing equipment separately, which has high investment cost, and the simultaneous use of pile pressing equipment and pile mixing machine requires a large construction space, limited construction occasions, slow construction speed, and low construction efficiency. The verticality control is poor, resulting in a reduction in the bearing capacity of the pile composite foundation and affecting the quality of the project

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