Assembly type steel crown beam supporting system in SMW construction method pile and construction method thereof

Abstract

The invention discloses an assembly type steel crown beam supporting system in an SMW construction method pile and a construction method thereof. The assembly type steel crown beam supporting system comprises H-shaped steel, an assembly type steel crown beam, a cross brace support and a cross brace, wherein the H-shaped steel is inserted into a concrete mixing pile, and the steel flange directionis parallel to a foundation pit supporting line; the steel crown beam comprises longitudinal steel plates attached to the outer sides of flanges on the two sides of the upper end of the H-shaped steelcorrespondingly, rib steel plates distributed and fixed along the inner sides of the longitudinal steel plates and clamping plates, the rib steel plates on the longitudinal steel plates on the two sides are stacked together front and back, the rib steel plates stacked on the two sides of an H-shaped steel web are oppositely pulled and fixed through bolts and supported on the H-shaped steel web, and the clamping plates are located on the two sides of the joint of the two longitudinal steel plates and clamp and fix the two longitudinal steel plates through bolts; and the cross brace support isclamped on the upper portions of the longitudinal steel plates through clamping grooves with downward inner side openings and fixed to the outer sides of the longitudinal steel plates through bolts, and the two ends of the cross brace support are supported and limited in limiting supporting grooves with upward outer side openings of the cross brace support correspondingly. The system can be repeatedly assembled and disassembled and is simple to operate.

Description

technical field [0001] The invention belongs to the field of foundation pile construction, and in particular relates to an assembled steel crown beam support system in SMW construction method piles and a construction method thereof. Background technique [0002] The SMW construction method pile takes into account the dual functions of retaining soil and waterproofing, and has been promoted and applied in foundation pile construction. Existing SMW construction method piles have the following problems in construction: 1) after the construction method piles are set up, in order to improve the integrity of the support piles, purlins need to be set on the top of the support piles. The commonly used method of SMW construction method piles is: For reinforced concrete crown beams, after the main body construction of the foundation pit is completed and the earthwork is backfilled, it is necessary to recycle the interpolated steel and the steel bars in the reinforced concrete crown be...

AI Technical Summary

Problems solved by technology

Existing SMW piles have the following problems during construction: 1) After the piles are driven, in order to improve the integrity of the supporting piles, purlins need to be set on the top of the piles. For reinforced concrete crown beams, after the main body of the foundation pit is completed and the earthwork is backfilled, it is necessary to recycle the interpolated steel and the steel bars in the reinforced concrete crown beams. The cost of recycling steel bars in the crown beams is relatively high, and labor costs may be far greater than the income of steel bar recycling; 2) Although reinforced concrete crown beams can improve the overall strength of SMW piles, the working surface is greatly affected by the climate and foundation pit environment, the construction period is long, material recycling is difficult, and construction waste is likely to be generated

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