A kind of smw engineering method section steel pulling out grouting method
A type of steel and grouting technology, applied in infrastructure engineering, construction, sheet pile walls, etc., can solve problems such as gap blocking, achieve cost control, ensure dense filling, and achieve the effect of simultaneity
Active Publication Date: 2015-09-09
SHANGHAI ZHONGJIN CONSTR GRP
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Problems solved by technology
[0004] The technical problem to be solved by the present invention is to provide a SMW construction method steel removal grouting method, which can effectively solve the problem that the gap is blocked
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[0029] 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 content taught by the present invention, those skilled in the art may 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.
[0030] The embodiment of the present invention relates to a method for removing and grouting SMW section steel, which includes the following steps: welding steel pipes on the outside of the section steel web, the welding position is close to the center of the section steel web and avoids the hoisting holes on the section steel web; At the same time, it is lowered to the cement-soil mixing pile that has been stirred to comp...
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The invention relates to a method for pulling out structural steel and conducting grouting through an SMW construction method. The method comprises the following steps that a steel pipe is welded on the outer side of a structural steel web, and the welding position is close to the center of the structural steel web and avoids a suspension hole in the structural steel web; the structural steel and the steel tube are put down into a stirred cement soil stirring pile at the same time, and construction of a SMW construction method pile is completed; when the structural steel is pulled out, the steel pipe is pulled out along with the structural steel, meanwhile, grouting is carried out in a gap by a grouting pipe which is put down through the steel pipe, the gap is formed after the structural steel is pulled out, simultaneity of structural steel pull-out and grouting is achieved, and the steps cannot be stopped until the structural steel and the steel pipe are completely pulled out, and grouting is completed. The method can effectively solve that the gap is blocked, meanwhile, ensures the communication performance of the steel pipe and the gap, and ensures the dense filling of the gap.
Description
technical field [0001] The invention relates to the technical field of foundation pit engineering, in particular to a method for removing and grouting SMW engineering method section steel. Background technique [0002] Stiffened cement-soil mixing wall construction method (hereinafter referred to as SMW construction method) is to use a special multi-axis deep mixer to drill and cut in situ, and at the same time inject cement slurry, after repeated stirring and mixing, insert core materials such as H-shaped steel or steel sheet piles into the mixing pile In the wall, a composite underground continuous wall that can not only retain soil but also prevent water is formed. The SMW construction method has the characteristics of low cost, which is mainly because the section steel can be pulled out for recycling after the construction of the underground structure is completed. The gap left after the section steel is pulled out is generally backfilled with yellow sand or compacted a...
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IPC IPC(8): E02D11/00E02D9/02E02D5/46
Inventor 刘警毛灏耘秦浩李军
Owner SHANGHAI ZHONGJIN CONSTR GRP