Supporting structure with combination of preheated groove-shaped piles and mixing piles

Abstract

A supporting structure with combination of preheated groove-shaped piles and mixing piles comprises preheated groove-shaped piles and mixing piles. The supporting structure is characterized in that the groove-shaped piles are of groove-shaped sections combined by top flanges, bottom flanges and webs; thicknesses of the top flanges and the bottom flanges decrease progressively, and thicknesses close to the webs are greater than those of the outer ends; prestressed strands are embedded in the top flanges and the bottom flanges longitudinally; and the preheated groove-shaped piles are inserted in the mixing piles at the internals of at least one mixing pile distance, and the mixing piles are connected with one another in an overlapping manner. The groove-shaped piles are simple in production technique, high in work efficiency and production speed, and low in cost.

Description

technical field [0001] The invention relates to the field of geotechnical engineering, in particular to a support project for deep foundation pits in soft soil areas. Background technique [0002] Deep foundation pit support piles in soft soil areas usually use bored piles or prefabricated piles combined with cement mixing piles or high-pressure jet grouting piles to retain soil and water. The combination of mixing piles and support piles is poor, and it is difficult to avoid soil leakage. However, the SWM method of embedding I-beams in multi-axis mixing piles has good integrity between I-beams and mixing piles, but the specifications of I-beams are small, the cost is high, and the removal cost and loss are large. Prefabricated I-shaped reinforced concrete piles Instead of I-shaped steel, the cost is low and removal is not required, but the manufacturing process of I-shaped piles is complicated. A kind of supporting structure combining grooved pile and cement mixing pile wi...

AI Technical Summary

Problems solved by technology

[0002] Deep foundation pit support piles in soft soil areas usually use bored piles or prefabricated piles combined with cement mixing piles or high-pressure jet grouting piles to retain soil and water. The combination of mixing piles and support piles is poor, and it is difficult to avoid soil leakage. However, the SWM method of embedding I-beams in multi-axis mixing piles has good integrity between I-beams and mixing piles, but the specifications of I-beams are small, the cost is high, and the removal cost and loss are large. Prefabricated I-shaped reinforced concrete piles Instead of I-beams, the cost is low and removal is not required, but the manufacturing process of I-shaped piles is complicated

A support structure combining grooved piles and cement mixing piles with simple manufacturing process and lower cost has not been reported yet.

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