Cotton straw supporting structure for cemented soil mixing pile

Abstract

The invention relates to a cotton straw supporting structure for a cemented soil mixing pile. The cotton straw supporting structure is composed of multiple cotton straw net frames in lap joint together up and down. Each cotton straw net frame comprises multiple layers of cotton straw net pieces stacked together and arranged vertically, and the cotton straw net pieces are formed by binding multiplepieces of cotton straw in the longitudinal direction and the transverse direction. At the lap joint portion of every two adjacent cotton straw net frames, the lower ends of the cotton straw in the upper cotton straw net frame are inserted into the lower cotton straw net frame, and the cotton straw net frames are inserted into each other and bound together through rabbets formed by natural branchbranching of the cotton straw. By means of the supporting structure, the flexural rigidity of the cemented soil mixing pile can be improved, and the physical and mechanical properties of different portions of the cemented soil mixing pile can keep consistent.

Description

technical field [0001] The invention relates to a cotton straw support structure used for cement-soil mixing piles, and belongs to the technical field of foundation pit and side slope support. Background technique [0002] As an in-situ soil reinforcement method, the cement-soil mixing pile method uses cement as a curing agent, and through a special mixing machine, the soft soil and the curing agent are forcibly stirred deep in the foundation, and the solidification agent is used between the curing agent and the soft soil. A series of physical and chemical reactions produced make the soft soil harden into a high-quality foundation with integrity, water stability and certain strength to form cement-soil mixing piles, which are widely used in the fields of foundation treatment, foundation pit or slope support engineering. Applications. The cement-soil mixing pile is a kind of pile body between the soil body and the concrete row pile. Its strength is obvious. Generally, it can...

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Problems solved by technology

Although these measures of adding reinforcement can enhance the engineering properties of cement-soil mixing piles, there are still some shortcomings: 1. In terms of reinforcing and curing piles with section steel, I-beam, etc., the reinforcement of these reinforcements is mostly plane reinforcement , the reinforcement range is limited, the reinforcement effect is not good, and the use process also involves multiple links such as renting, entering and exiting, driving in, and pulling back, so the cost of use is high; in addition, it is difficult to pull out (back) the later section steel , easily causing ground disturbance

2. In terms of reinforcing the solidified pile with moso bamboo, etc., its disadvantages include: 1) Bamboo is an uneven material, and different parts have different effects on the physical and mechanical properties of the solidified pile, and the length is limited, and some parts are too thin. 2) The reliability and convenience of the connection between bamboo materials are lacking, and the length of the bamboo itself is limited, so the length of the reinforcement of the bamboo materials is limited

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