Locked steel pipe pile cofferdam and its construction method

A construction method and technology of steel pipe piles, which are applied in the direction of infrastructure engineering and construction, can solve the problems of steel pipe pile instability, inconvenient copying, time-consuming and labor-intensive problems, and achieve high overall rigidity, convenient operation, and good economy Effect

Active Publication Date: 2021-01-26
CHINA RAILWAY MAJOR BRIDGE ENG GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the method of inserting steel plate pads is used, the effect is limited. If the load on the outside of the cofferdam is large, it will still cause local instability of the steel pipe piles, and it is inconvenient to copy; The method of inserting concrete blocks has great limitations. When the locked steel pipe piles are buried deep in the soil and the poured concrete is below the soil surface, the soil inside the pipe piles needs to be taken out before implementation. The process is complicated, time-consuming and laborious.

Method used

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  • Locked steel pipe pile cofferdam and its construction method
  • Locked steel pipe pile cofferdam and its construction method
  • Locked steel pipe pile cofferdam and its construction method

Examples

Experimental program
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Embodiment 1

[0056] Embodiment 1: the template includes a plurality of wooden templates, each wooden template includes a side plate 141 and two webs 142 arranged in parallel, one side of the side plate 141 is close to the inner support 2 of the top floor, and the two webs 142 are vertically arranged on On the other side of the side plate 141, gaps are left between adjacent wooden formworks.

Embodiment 2

[0057] Embodiment 2: the template is a geotextile 17, and the concrete pad 6 also includes a plurality of steel bars 16, and the two ends of each steel bar 16 are respectively fixedly connected with the bottom of the internal support and the locking steel pipe pile 1, and the plurality of steel bars 16 are all located at The bottom of the geotextile 17 serves as a supporting structure for the geotextile 17 .

[0058] The embodiment of the present invention also provides a construction method of the interlocking steel pipe pile cofferdam. The method includes the following steps: assembling the inner support, inserting and driving the interlocking steel pipe pile 1 during simultaneous construction, passing a plurality of connecting pieces through the inner support, The bottom of each connector is connected with the bottom of the inner support that needs to be lowered to ensure that multiple connectors are installed at the bottom of the inner support that needs to be lowered, and ...

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Abstract

The invention discloses a locking steel pipe pile cofferdam and a construction method thereof, and relates to the field of bridge engineering. The cofferdam includes a plurality of interlocking steel pipe piles that are closely connected in sequence. Internal supports are provided in the foundation pit surrounded by the plurality of interlocking steel pipe piles. There are bored piles in the cofferdam, and the cofferdam also includes The concrete pad is arranged between the inner support and the locked steel pipe pile. The method includes the following steps: assembling the inner support, fixing the inner support to be lowered on the suspension system; lowering the inner support to be lowered to the design position through the suspension system; Concrete pads for construction. In the invention, a concrete pad is arranged between the locked steel pipe pile and the inner support, which improves the pressure bearing capacity between the locked steel pipe pile and the inner support, and has convenient construction and high construction efficiency.

Description

technical field [0001] The invention relates to the field of bridge engineering, in particular to a locking steel pipe pile cofferdam and a construction method thereof. Background technique [0002] At present, the traditional installation method of the internal support of the lock steel pipe pile cofferdam is: the internal support is assembled on the construction platform or the ground according to the design requirements. Then, use the hanging equipment to put it in place, and then insert and drive the locked steel pipe piles to complete the cofferdam construction. When assembling with this method, if the number of inner support layers is greater than or equal to 2, the overall height of the structure is usually between a few meters and more than ten meters. The height is relatively high, and the construction operation is more inconvenient, which affects the construction efficiency. [0003] In addition, since the interlocking steel pipe pile is a thin-walled circular pip...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D19/04
CPCE02D19/04
Inventor 张春新王寅峰胡军陶建山胡海波杨文明李鹏刘承亮张爱花马涛毛伟琦涂满明
Owner CHINA RAILWAY MAJOR BRIDGE ENG GRP CO LTD
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