Pit pile anchor wall concrete breast beam structure and construction method thereof

Abstract

Disclosed is a concrete middle beam structure with foundation pit piles and anchor breast wall and the construction method thereof. Prestressed anchor rods are fixed between slope protection piles towards the soil between piles, and side wall of the foundation pits is also provided with transverse concrete middle beams which are between concrete slope protection piles and are in casting connectionwith the prestressed anchor rods; the outer lateral surface of the transverse concrete middle beams is as parallel and level as the sheath of the pile bodies of the concrete slope protection piles; the inner lateral surface is close to the inner end of the pile bodies of the concrete slope protection piles, and the inner part close to the outer lateral surface is distributed with reinforced netswhich are coated at the outer lateral surface of the pile bodies of the row of the concrete slope protection piles and connected with anchor plates of the prestressed anchor rods; the prestressed anchor rods are embedded into the soil between piles from the side wall of the foundation pits, wherein, the anchor heads are positioned in the inner side of the connecting surface at the outer lateral surface of the row of the concrete slope protection piles. The structure of the invention changes the middle beams of section steel and the state that the prestressed anchor heads extrude the pile bodies, can reduce the excavation volume of foundation pits and needs no hoisting equipment to lift section steel middle beam, thereby greatly shortening construction time, simplifying construction stepsand reducing construction cost.

Description

technical field [0001] The invention relates to a construction engineering foundation pit supporting structure and a construction method thereof. Background technique [0002] In foundation engineering, the traditional deep foundation pit support often adopts pile-anchor wall protection structure. Several prestressed anchor rods are made in the soil between the piles between the slope protection piles, and the prestressed anchor rods and slope protection piles are connected through horizontal steel waist beams. Anchored together. Its defect is that when the engineering building uses the pile body as the outer edge of the structure, the section steel waist beam protruding from the pile body and the prestressed anchor head must be removed. At this time, if the completed structure has not formed the top unloading of the slope protection pile, the rash removal of the steel waist beam will affect the construction safety. In order to prevent engineering accidents, the constructio...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a concrete waist beam structure of foundation pit pile anchor retaining wall and its construction method, to solve the technical problem that removing the shaped steel waist beam will affect the construction safety and delay the construction period in the pile anchor retaining wall structure; and solve the traditional The construction time of foundation pit support structure in construction engineering is too long, too much material is wasted, the construction is complicated, and the construction cost is too high

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