Mixed grooved inserted combined prefabricated special-shaped section composite foundation structure and construction method

Abstract

The invention discloses a mixed grooved inserted combined prefabricated special-shaped section composite foundation structure and a construction method, and belongs to the field of foundations. The structure includes a plurality of mixing piles, and each mixing pile is embedded into the foundation in a circular pile shape; all mixing piles are arranged on a ground plane in an H shape, every adjacent mixing piles are mutually interlocked and connected, and a continuous wall type H-shaped mixing tank is formed; a prefabricated plate is inserted vertically in each mixing pile, and the prefabricated plates in all mixing piles are continuously spliced in the direction of the H-shaped mixing tank; and in each mixing pile, the position between the two sides of the prefabricated plates and foundation soil at the edges of the mixing piles is filled with cement soil as a transition layer. According to the mixed grooved inserted combined prefabricated special-shaped section composite foundation structure and the construction method, the principle is simple and reliable, construction operation is easy and convenient, applicable working conditions are wide, and the influence by site construction conditions is small; and according to a composite foundation, compared with conventional foundations, under the condition of using concrete mortar with the same volume, the bearing capacity is greatly improved, and the good application prospects are achieved.

Description

technical field [0001] The invention belongs to the field of ground foundations, and in particular relates to a composite foundation of a mixed prefabricated special-shaped cross-section inserted into a groove. Background technique [0002] As an important link in engineering construction, foundation construction has a decisive impact on the quality and economic benefits of the entire project. Prefabricated concrete circular tubular piles are widely used in the foundation engineering of buildings and structures due to the advantages of high concrete strength, good hammer resistance, short construction period, small impact on the environment, and low cost per unit bearing capacity. [0003] However, when dealing with deep soft soil foundations, due to the low strength of the soil around the pile, the circular tubular pile has the disadvantages of low pile side friction and low single pile bearing capacity. In order to improve this problem, researchers have carried out resear...

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Problems solved by technology

[0004] The purpose of this invention is to solve the problem that most of the current foundation forms have certain limitations when used in deep and soft soil areas, and the bearing capacity obtained per unit of concrete material is low, and proposes a mixed-groove-inserted combined prefabrication Special-shaped cross-section composite foundation structure

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