Construction Method of Static Pressure Prestressed Pipe Pile Applied in Sea Reclamation Geology

Abstract

The invention provides a construction method for a static pressure prestressed pipe pile applied to sea-filling geology. The construction method mainly meets pipe pile demands in complex geology environments with rock-filled layer lithology being intermediary weathered and slightly weathered granite, wide distribution range of rock-filled layers, large buried depth, Yanshanian intrusion granite as foundation rocks, compact and hard lithology and uneven distributed rock elevation. According to the provided construction method, a reasonable effective pile foundation construction mode can be selected, and the influence of the geological conditions on basic foundation construction qualities is minimized. Besides, good features of small vibration, low noise and the like of the pipe pile can be guaranteed; the pile breaking rate is greatly reduced in pile foundation infrastructure under ultra-deep rock-filled geology and Yanshanian granite geology conditions; meanwhile, the construction cost is reduced; the construction period is shortened; the problem of difficult pile foundation construction under the complex sea-filled geology condition is completely solved; technological support and references are provided for the pile foundation construction under the similar sea-filled geological conditions.

Description

Technical field [0001] The invention relates to a building construction method, in particular to a construction method of static pressure prestressed pipe piles applied to sea reclamation geology. Background technique [0002] At present, with the continuous development of coastal cities in my country, more and more coastal cities need to expand construction land through reclamation. The geology of reclamation land is often more complicated. For example, the original landform unit of the reclaimed site belongs to the coastal beach, and then the land is artificially reclaimed. The order of geological conditions from top to bottom after geological exploration is: Quaternary artificial fill layer, Quaternary sea-land interactive sedimentary layer, Quaternary alluvial strata, Quaternary residual strata, and Yanshanian intrusive granite. Among them, the rockfill layer has a wide distribution range and deep burial depth. Its layer thickness is 0.5-14m, with an average thickness of 4....

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the existing pipe pile construction method for complex reclamation geology cannot well overcome the technical problems of hard rock filling layer, dense and hard foundation rock, and uneven distribution of rock mass elevation. The shortcomings of long construction period, high construction cost and poor construction quality provide a construction method for static pressure prestressed pipe piles applied to reclamation geology

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