smw construction method pile top ring beam structure and its construction method

Abstract

The invention discloses a top ring beam structure for SMW piles and a construction method thereof. The top ring beam structure for the SMW piles comprises a top ring beam arranged on the soil mixing piles. All or part of the soil mixing piles is each internally provided with section steel. The top ring beam is of a bar-shaped reinforced cement structure. The upper surfaces of the section steel extend out of the upper surfaces of the soil mixing piles correspondingly by certain distances. The upper surface of the top ring beam is as high as or higher than the upper surfaces of the section steel. The upper portion of the top ring beam is provided with holes corresponding to the section steel. The upper portions of the section steel are each provided with a hoisting hole. The portions, where the hoisting holes are formed, of the section steel are higher than the bottoms of the holes of the top ring beam. On the premise that the structural strength and rigidity of the top ring beam are not weakened, the upper surface of the top ring beam is as high as or higher than the upper surfaces of the section steel by lowering the section steel, an access channel communicating with a landing stage can be formed by covering the top ring beam with an access cover plate, the space is effectively saved, holes exposed out of the hoisting holes of the section steel can be formed in the top ring beam, and recovery of the section steel can be guaranteed.

Description

technical field [0001] The invention relates to an SMW construction method pile top ring beam structure and a construction method thereof. Background technique [0002] The SMW construction method pile (steel cement soil pile wall) enclosure structure began in the 1980s, and has been widely used in foundation pit projects of various depths. The cement-soil wall of the SMW construction method pile can be used as a water-stop measure for the enclosure structure, and its own strength only needs to meet the shear bearing capacity, which can be fully satisfied when the distance between the section steel is not large; the section steel is the main force-bearing member , due to its high strength, less dosage, and can be recycled, the construction speed is fast and the economic performance is high. Therefore, the SMW construction method pile enclosure structure has become the first choice for engineers to design. [0003] However, in the current construction method, the general se...

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Problems solved by technology

This will bring the following problems: 1) The section steel is higher than the ground. If trestle bridges are required in the foundation pit, or due to the limited space around the foundation pit, the upper space of the ring beam needs to be used. The raised section steel becomes an obstacle for vehicles and pedestrians. ; 2) The on-site environment is poor; 3) It causes waste of space and section steel

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