Steel pipe pile for rectangular pier cofferdam

A technology for steel pipe piles and bridge piers, which is applied to sheet pile walls, buildings, and foundation structure engineering, and can solve the problem that the bending modulus of steel sheet pile cofferdams cannot meet the cross-sectional resistance moment, and it is difficult for large tugboats and floating cranes to enter, and internal In order to achieve the effect of simple structure, enhanced rigidity, and simple and convenient support, the construction cannot be carried out due to the intensive support.

Inactive Publication Date: 2012-05-30
CHINA RAILWAY 18TH BUREAU GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] For bridge piers with large and rectangular caps, ordinary steel sheet pile cofferdams cannot be self-contained like circular cofferdams. The denseness of the internal support makes construction impossible. deep, the pressure on the inner and outer water sides is relatively high, and the flexural modulus of the steel sheet pile cofferdam is far from meeting the required section resistance moment; if a steel box cofferdam is used, a large amount of steel is required, large construction sites, and large transportation , lifting equipment and assembly platforms
Due to the limitation of navigation conditions and floating crane equipment, it is difficult for large tugboats and floating crane equipment to enter the pier construction site, so it is also difficult to use steel box cofferdams

Method used

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  • Steel pipe pile for rectangular pier cofferdam
  • Steel pipe pile for rectangular pier cofferdam
  • Steel pipe pile for rectangular pier cofferdam

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Embodiment Construction

[0010] A steel pipe pile for a cofferdam of a rectangular pier, in which a female buckle 2 and a male buckle 3 are respectively processed on both sides of a spiral pipe 1. Above-mentioned male buckle and female buckle adopt unequal angle steel to make and male buckle and female buckle axis become 180 °, and corner pipe 5 becomes 90 °. In order to ensure the accuracy of positioning and the spatial position of the inner cavity of the female buckle during the insertion and driving of the steel pipe pile, a stopper 4 is added to the outer side of the male buckle. When carrying out lock grouting, the cloth bag 6 is lined at the lock mouth of the male buckle and the female buckle.

[0011] When using the present invention, the steel pipe piles are connected to each other from the beginning along the periphery of the cap to form an integral steel pipe pile, and they are lifted one by one, and then the steel pipe piles are lifted to the design position by mechanical assistance.

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Abstract

The invention provides a steel pipe pile for a rectangular pier cofferdam. The steel pipe pile is characterized in that female buckles and male buckles are respectively processed on the two sides of spiral pipes. The steel pipe pile provided by the invention has the following advantages: the steel pipe pile has a simple structure and is convenient to use; and the section strength and rigidity of the cofferdam can be enhanced, the cofferdam can be simply and conveniently supported and the construction speed can be increased by using the steel pipe pile when the rectangular pier cofferdam is constructed.

Description

Technical field: [0001] The invention belongs to building construction equipment, in particular to a steel pipe pile for a cofferdam of a rectangular pier. Background technique: [0002] For bridge piers with large and rectangular caps, ordinary steel sheet pile cofferdams cannot be self-contained like circular cofferdams. deep, and the pressure on the inner and outer water sides is relatively high, the flexural modulus of the steel sheet pile cofferdam is far from meeting the required cross-sectional resistance moment; if a steel box cofferdam is used, a large amount of steel is required, large construction sites, and large transportation , lifting equipment and assembled platforms. Due to the limitation of navigation conditions and floating crane equipment, it is difficult for large tugboats and floating crane equipment to enter the pier construction site, so it is also difficult to use steel box cofferdams. Invention content: [0003] The purpose of the present invent...

Claims

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Application Information

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IPC IPC(8): E02D5/28E02D5/56E02D19/04
Inventor 张运书辛自洋
Owner CHINA RAILWAY 18TH BUREAU GRP CO LTD
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