Plastic-sleeve bamboo-reinforcement cemented soil pile and construction method thereof

Abstract

The invention discloses a bamboo-reinforced cement-soil pile with a plastic sleeve, which comprises a pile hole arranged in the soil body; a plastic sleeve is arranged in the pile hole, and a bamboo reinforcement cage is arranged inside the plastic sleeve; the plastic sleeve A grouting channel is provided in the pipe; cement soil is injected from the grouting channel, and the inner hole of the plastic casing is filled and the bamboo reinforcement cage is wrapped; a grouting filling is provided between the outer layer of the plastic casing and the pile hole. The construction method is construction preparation → pile driver in place → immersed pipe → hoisting into plastic casing → hoisting into bamboo reinforcement cage → pouring cement soil → vibrating pipe pulling → grouting or filling with sand and gravel → pile formation; construction method Simple, high construction efficiency, good construction quality and low project cost, can ensure the bearing capacity of the foundation of the project and meet the requirements of the construction period, effectively increase the pile side friction resistance, improve the bending and shearing resistance of cement-soil piles, and at the same time The pile body and the soft soil foundation are used to form a composite foundation with geogrid, which has high bearing capacity and can effectively solve the uneven settlement of the structure.

Description

Technical field [0001] The invention relates to a cement-soil pile, in particular to a plastic casing bamboo-reinforced cement-soil pile and a construction method thereof. Background technique [0002] With the continuous development of infrastructure construction in my country, a large number of construction projects, road projects, water conservancy projects, etc. have to be built on soft soil foundations. Due to the characteristics of large void ratio, high water content, and large settlement, soft soils must be Foundation treatment. Especially in the locations of culverts, retaining walls and other structural foundations, bridge head transition sections, and new and old subgrade splicing sections that require high foundation bearing capacity and allowable post-construction settlement, the soft soil layer treatment is difficult, demanding, and the construction period is tight. However, although the general traditional foundation treatment methods can carry out foundation reinf...

AI Technical Summary

Problems solved by technology

Especially in the foundations of structures such as culverts and retaining walls that require high foundation bearing capacity and allowable post-construction settlement, as well as the bridge head transition section and the location of the new and old subgrade splicing sections, the treatment of soft soil layers is difficult, demanding, and tight in construction schedule. , although the general traditional foundation treatment methods can carry out foundation reinforcement treatment, they also have their own limitations

For example: 1. The preloading method has a long construction period, and it is difficult to achieve the construction period target for projects with a tight construction period; 2. Although the replacement and filling method is simple in construction, its treatment depth is relatively shallow, and it can only treat the foundation soil surface layer as a cushion. Poor adaptability; 3. Although the cost of the dynamic compaction method is low, it is mainly suitable for dealing with thicker soft foundations, but its construction has a great impact on the surrounding environment; 4. The cement-soil mixing pile method is a flexible pile, and its bearing capacity is small and Difficult to guarantee pile quality

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