Construction method of ultra-long bored concrete pile with large-diameter casing combination
A combination of casing and construction method technology, applied in sheet pile walls, foundation structure engineering, construction, etc., can solve the problems of steel casing wear, drilling difficulties, easy to bury pipes, etc., achieve low frictional resistance, reduce drilling Effects of power loss and deep hole depth
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[0043] Below in conjunction with specific embodiment, further illustrate the present invention. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the teachings of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.
[0044]The embodiment of the present invention relates to a construction method of super-long cast-in-situ piles with large-diameter combined casings. The method of combining multiple steel casings is used to complete the hole-forming construction of the pile foundation, and the gaps between the steel casings are backfilled with sand and soil. By hanging the reinforcement cage in the innermost steel casing, pouring concrete sect...
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