Simultaneous construction technology of supporting steel pipe column and concrete pouring pile in deep foundation pit
A technology for steel pipe columns and supporting steel pipes, which is applied in foundation structure engineering, sheet pile walls, buildings, etc., can solve the problems of large construction safety hazards, difficulty in guaranteeing construction quality, and low construction efficiency, and achieve low construction noise and fast construction speed , the effect of easy operation
Active Publication Date: 2015-09-30
CHINA CONSTR THIRD ENG BUREAU GRP CO LTD +1
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Problems solved by technology
[0003] In order to solve the problems of large potential safety hazards in traditional construction, low construction efficiency, and difficulty in ensuring construction quality, the present invention provides a deep foundation pit supporting steel pipe columns and concrete pouring piles that are easy to operate, low in construction safety hazards, and high in construction efficiency and construction quality. construction technology
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[0038] The present invention utilizes the steel pipe column 7 designed and adopted as the conduit for concrete pouring of the column pile, which is formed by connecting and combining the steel pipe column 7, the screw rod 2, the nut 3, the parallel iron 5, the rubber washer 6 and the flange plate 4 of the concrete hopper 1 The long concrete pouring conduit enables the installation of the steel pipe column and the concrete pouring of the column pile foundation to speed up the construction speed; the guide hoop 12, the oblique reinforcement 10, the radial short reinforcement 11 and the reinforcing stirrup 14 are welded to form the guide reinforcement Bell mouth, and more than 2 welds are set to be fixed on the inner side of the steel cage 8, which ensures the verticality of the installation of the steel pipe column 7.
[0039] like Figure 1-Figure 5 As shown, the steel pipe of the steel pipe column 7 is a steel pipe of φ300~φ450, the outer diameter of the screw rod 2 is the sam...
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Disclosed is a simultaneous construction technology for a deep foundation pit inner support steel tube column and a cast-in-place concrete pile. The steel tube column is in bolted connection with a flange of a concrete hopper conduit through a screw welded at one end of the steel tube column to form a long concrete poured conduit, and when the steel tube column is placed down and pulled up at a hole, through two guide reinforcing steel bar horn mouths fixed on the inner side of a reinforcement cage and with inner diameters slightly larger than the outer diameter of the steel tube column, the steel tube column is guaranteed to be vertical when pouring concrete is poured and vertically anchored into the cast-in-place concrete pile for a certain length finally. According to the simultaneous construction technology, the technical risk of follow-up insertion of the steel tube column can be avoided effectively, construction is convenient, vertical anchoring of the steel tube column and the cast-in-place concrete pile is guaranteed, and simultaneous construction and one-step molding of the steel tube column and the cast-in-place concrete pile are achieved. The simultaneous construction technology has the advantages of simple operation, low cost and high practicability.
Description
technical field [0001] The invention relates to a construction technology for supporting steel pipe columns and concrete filling piles in deep foundation pits, in particular to a simultaneous construction technology for supporting steel pipe columns and concrete filling piles in deep foundation pits. Background technique [0002] At present, it is more and more popular to use steel pipe column piles and concrete pouring piles as the vertical force-bearing members of the support system in the foundation pit. When constructing steel pipe column piles and concrete pouring piles, two methods are generally used: one is to pour the construction first and finish the concrete pouring After the pile, the steel pipe column is inserted into the concrete pouring pile to a certain depth. This construction method has a large resistance when the steel pipe is inserted, the pipe body is easy to incline, and the verticality of the steel pipe column is not easy to ensure, and there is a risk ...
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IPC IPC(8): E02D5/36E02D15/04
Inventor 黎兴文刘家甫陈汉彬桂芳游丹顾辰欢
Owner CHINA CONSTR THIRD ENG BUREAU GRP CO LTD