Pipe piles and open caisson combined construction method

Abstract

The invention discloses a pipe pile and open caisson combined construction method. The method comprises the steps of (1) geological exploration; (2) designing measurement calculation; (3) site leveling; (4) construction of pipe piles; (5) connecting an open caisson casting blade angle and the pipe piles into a whole; (6) sinking combination of an open caisson and the pipe piles; (7) enabling the open caisson in place; (8) construction of an open caisson cushion layer; (9) secondary construction of the open caisson and the pipe piles; (10) secondary pile construction and connection constructionof the open caisson cushion layer. Firstly, the pipe piles are driven into the soil, due to the fact that the pipe piles firstly sink into the ground to be positioned, deviation possibly generated inthe sinking process of the open caisson is reduced, the sinking speed can be controlled, the open caisson can be formed at a time, the time taken for disassembling and reshipping a scaffold and a formwork during sectional manufacturing of the open caisson can be shortened, the working efficiency is improved, and the construction period is shortened; and the pipe piles and the open caisson are poured into a whole and then sink, the mode that the cast-in-place piles are broken while then soil is taken is replaced, the construction difficulty is reduced, resources are effectively saved, and thecost is effectively controlled.

Description

Technical field [0001] The invention relates to the technical field of civil engineering construction, and more specifically, it relates to a method for combined construction of a pipe pile and a caisson. Background technique [0002] Caisson is a widely used construction method for underground engineering and deep foundation engineering, and it is also a structural form for building deep foundation basements and industrial plants. The principle is: on the ground and pit where the caisson is built, first make an open reinforced concrete wellbore to achieve full height or partial height (when subsection), and after reaching a certain strength, use manual or mechanical digging in the wellbore continuously The soil, as the soil surface in the well gradually decreases, the caisson body uses its own weight (or under the applied load) or additional weight to overcome the friction between the soil wall and the resistance of the soil at the blade foot, and continuously cut the soil and s...

AI Technical Summary

Problems solved by technology

[0003] In actual construction, the cast-in-place piles are constructed before the construction of the caisson. During the process of sinking the caisson, the poured-in-situ piles are removed while taking soil, which consumes construction time and increases the difficulty of construction, which needs to be improved.