Rotary excavating steel sheet pile under complex stratum and construction technology

Abstract

The rotary excavating steel sheet pile under the complex stratum comprises a plurality of steel pipe piles which are annularly distributed and a plurality of steel plates, the multiple sets of steel plates are annularly distributed differently, part of the steel plates are erected and fixed to the steel pipe piles, and the two vertical side edges of each steel plate are bent to form clamping plates with the U-shaped cross sections correspondingly; the clamping plates of every two adjacent steel plates are buckled with each other, a sealing assembly is arranged in at least one clamping plate of the same steel plate and comprises a plugging piece and a sealing piece, the plugging piece is connected to the edge of an opening in the lower end of the clamping plate, and the sealing piece comprises a plurality of expansion sealing strips and a plurality of elastic sealing strips; the expansion sealing strips are made of water expansion materials, the multiple expansion sealing strips and the multiple elastic sealing strips are distributed in a U shape, and the expansion sealing strips and the elastic sealing strips are distributed at intervals. Sealing treatment can be effectively conducted through the expansion sealing strip and the elastic sealing strip.

Description

technical field [0001] The present application relates to the field of steel sheet pile results, and in particular, to a rotary excavated steel sheet pile under complex strata and a construction technique. Background technique [0002] Steel sheet pile is an enclosure device used for foundation construction in water areas. It mainly uses a plurality of mutually spliced ​​steel sheets to be inserted on the ground to form a continuous and tight steel structure for retaining soil or water, so as to facilitate The construction is completed on the inner side of the steel sheet piles, currently mainly Larsen steel sheet piles. [0003] In the face of complex strata, when the steel plate is inserted into the stratum, the adjacent steel plates will be inserted successively due to different geological obstacles and different forces during the process of inserting the steel plate into the stratum. After being installed in the stratum, there is a certain dislocation and deformation, w...

AI Technical Summary

Problems solved by technology

[0005] Using welding method, after the construction is completed, when removing the steel sheet pile, it is often necessary to cut or discard the material of the steel sheet pile, which will cause a great waste of construction and increase the construction process; It is necessary to use mixing equipment on site, and then pump the water-stop material into the lock between adjacent steel plates, which will greatly occupy the limited construction space on site

And when the water level changes greatly, the steel sheet piles will bear relatively large repeated impact loads. At this time, repeated strains will occur between adjacent steel plates. , it will cause a gap between the locks of two adjacent steel plates

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