A kind of skirt-type underground diaphragm wall-pile composite foundation

Abstract

The invention belongs to the technical field of industrial architecture, power plant construction and bridge and tunnel engineering, and relates to a skirt separation plate underground diaphragm wall-pile combined foundation; and the skirt separation plate underground diaphragm wall-pile combined foundation mainly consists of a main underground diaphragm wall, inner vertical separation plates, bearing platform plates, a skirt underground diaphragm wall, outer vertical separation plates and piles. The main underground diaphragm wall and the skirt underground diaphragm wall form a zigzag structure; the skirt underground diaphragm wall sleeves the upper part of the main underground diaphragm wall; multiple inner vertical separation plates form two symmetrical triangular space in the main underground diaphragm wall; multiple piles are uniformly distributed in the main underground diaphragm wall; the skirt underground diaphragm wall, the main underground diaphragm wall and the piles are connected as an overall structure through the bearing platform plates; through a synergistic effect of the three, the overall rigidity of the combined foundation is improved; and the outer vertical separation plates are used for connecting the internal of the skirt underground diaphragm wall with the main underground diaphragm wall. The combined foundation is reasonable in stress of the overall structure, saves the construction cost, is wide in application range, and can be applied to the field of industrial architecture, power plant construction, wind power generation and bridge and tunnel engineering.

Description

technical field [0001] The invention belongs to the technical fields of industrial buildings, power plant construction and bridge-tunnel engineering, and relates to a structural form of a composite foundation, in particular to a skirt-type underground diaphragm wall-pile composite foundation with partitions. Background technique [0002] With the development of society and the increasing number of large-scale projects at home and abroad, industrial buildings, power plant buildings, bridge and tunnel engineering and other fields are facing more and more situations that need to resist large horizontal bearing capacity, horizontal loads (such as ship loads, wave loads, etc.) Force, water flow force, wind load, etc.) become its control load in the foundation design. In recent years, it is not uncommon for the foundation of structures to be damaged due to large horizontal loads. Most of the traditional solutions adopt the form of pile foundation, underground diaphragm wall, cais...

AI Technical Summary

Problems solved by technology

Most of the traditional solutions adopt the form of pile foundation, underground diaphragm wall, caisson, suction barrel foundation, etc.; although the pile group foundation has a large vertical bearing capacity, its ability to resist horizontal load is insufficient; the overall use of underground diaphragm wall, The cost of the caisson foundation is too high; the rigidity of the conventional suction barrel is small, and the deflection deformation is large under the action of the horizontal load. As a shallow foundation form, its own stability is insufficient

[0003] The Chinese utility model patent "submarine skirt suction anchor" (CN 201581410 U) and the Chinese invention patent "submarine suction anchor" (200910019282.9) disclose a submarine skirt suction anchor, which includes a barrel with an open bottom and a closed top. There is a drainage hole on the top surface of the barrel, and there is a ring-shaped reinforcing plate on the outer side of the upper end of the barrel. The ring-shaped reinforcing plate and the barrel together form an overall structure with a T-shaped longitudinal section; this suction foundation can solve the problem of existing suction foundations. The problem of small bearing capacity, but mainly involves the foundation of offshore wind power projects

The Chinese utility model patent "A Suction Bucket-Pile Composite Foundation" (CN 202273241 U) discloses a suction bucket-pile composite foundation, which includes a suction bucket and piles. The barrel cover is provided with through holes, and the piles run through the entire suction barrel from top to bottom, and the piles are fixedly connected to the barrel cover; this composite foundation can improve the ability to resist horizontal and overturning, but the single pile and single barrel Formal economic cost is too high

The Chinese invention patent "Horizontal load-bearing composite foundation and method based on piles and underground diaphragm walls" (CN 105756075 A) discloses a horizontal load-bearing composite foundation of piles and underground diaphragm walls, which includes underground diaphragm walls and multiple Horizontal loaded piles; while taking advantage of the advantages of the large horizontal rigidity of the underground diaphragm wall, it ensures the embeddedness of the foundation, but the connection point between the underground diaphragm wall and the pile will cause stress concentration problems

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