Supporting structure with two rows of steel sheet piles and construction method of supporting structure

Abstract

The invention discloses a supporting structure with two rows of steel sheet piles and a construction method of the supporting structure. The supporting structure comprises the front-row steel sheet piles, the back-row steel sheet piles, enclosing purlins, clamping grooves, connecting beams and bolts; each row of the steel sheet piles are connected into a whole through the corresponding enclosing purlin, the clamping grooves are formed in the pile tops of the steel sheet piles, the ends of the connecting beams are aligned with the clamping grooves, and the steel sheet piles, the clamping grooves and the connecting beams are all provided with bolt holes and fixed through the bolts for one time. The construction method comprises the steps that firstly, the front-row steel sheet piles and the back-row steel sheet piles are driven, and the enclosing purlins are erected; secondly, the clamping grooves are formed, the connecting beams are fixed, and precipitation is conducted on soil masses and foundation pits which are located between the pile rows; lastly, the foundation pits are excavated, and underground structures are constructed. According to the supporting structure and the construction method, steel structures can be recycled, and the pile tops of the front-row steel sheet piles and the pile tops of the back-row steel sheet piles achieve deformation coordination by fixing the connecting beams; by conducting precipitation on the soil masses between the pile rows, the horizontal borne force of the front-row steel sheet piles is greatly decreased, the seepage path is widened, the foundation pit excavation safety is improved, and the construction cost is reduced.

Description

technical field [0001] The invention relates to the technical field of geotechnical engineering, and more specifically relates to a support structure of double-row steel sheet piles and a construction method thereof. Background technique [0002] With the development of high-rise buildings in our country, the traditional single-row support structure can no longer better meet the engineering requirements. The double-row pile enclosure structure is widely used in foundation pit engineering because of its better implementation and has achieved Good economic and social benefits. Bored cast-in-place piles are usually used for double-row piles. Bored cast-in-place piles have the advantages of large bearing capacity, good stability, and small settlement, but there are also many problems such as complicated process, more mud garbage, and high cost. A large number of engineering examples and theoretical analysis have proved that the rigid connection of the top of the row of piles is...

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Problems solved by technology

[0003] The purpose of the present invention is to address the deficiencies of the above-mentioned prior art and provide a support structure and construction method for double-row steel sheet piles to solve the pile top connection problem of double-row steel sheet piles and the foundation pit seepage caused by foundation pit excavation Deformation and deformation of steel sheet piles

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