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Method for treating steel pipe pile foundation on riprap seabed foundation

A treatment method and technology of steel pipe piles, which are applied in the fields of infrastructure engineering, erection/assembly of bridges, soil protection, etc., can solve the problems of poor economy, high cost of riprap seabed foundation treatment, and long construction period, and achieve increased Work efficiency, reducing the input of large-scale measures, and the effect of reasonable structural stress

Active Publication Date: 2019-07-19
CHINA CONSTR SIXTH ENG BUREAU CIVILENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The cost of treating the riprap seabed foundation with this patented technology is too high, the construction period is too long, and the economy is poor

Method used

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  • Method for treating steel pipe pile foundation on riprap seabed foundation
  • Method for treating steel pipe pile foundation on riprap seabed foundation
  • Method for treating steel pipe pile foundation on riprap seabed foundation

Examples

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Effect test

Embodiment 1

[0068] A method for treating a riprap seabed foundation steel pipe pile foundation of the present invention comprises the following steps:

[0069] (1) Use a pontoon-type pile driver to drive multiple sand piles 1 on the seabed at the design position of the sand piles, make a riprap foundation 2 on the top surface of all the sand piles 1 and level them, and install a prefabricated foundation on the riprap foundation 2. Reinforced concrete caisson 3, and adjust the plane position coordinate error of the bottom surface of the prefabricated reinforced concrete caisson 3 within 100mm, and adjust the top elevation error of the prefabricated reinforced concrete caisson 3 within 100mm;

[0070] (2) On the described prefabricated reinforced concrete caisson 3 and on the left side of the left beam end connecting the first span Bailey beam 6-1, the construction of the bridge abutment 4 is carried out, and the described bridge abutment 4 construction includes: at the distance from the fir...

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Abstract

The invention discloses a method for treating a steel pipe pile foundation on a riprap seabed foundation. The method comprises the following steps: (1) a plurality of sand piles are driven into a seabed on the sand pile design position through a floating pontoon type pile driver, the riprap foundation is treated and levelled on the top faces of all the sand piles, and prefabricated steel bar concrete caisson is mounted on the riprap foundation; (2) a bridge abutment is constructed on the position, on the left side of the left beam end of a connected primary span Bailey beam, on the prefabricated steel bar concrete caisson; (3) the primary span Bailey beam and a bridge deck structure are mounted; (4) three steel pipe piles are subjected to testing driving within the riprap foundation bed range on the right side of the prefabricated steel bar concrete caisson through a crane; (5) steel pipe piles are erected on the outer sides of the three steel pipe piles subjected to testing driving; and (6) a stress system is converted. By adopting the method, the purpose of successful crossing when the riprap foundation affects pipe pile sinking is achieved.

Description

technical field [0001] The invention relates to the field of steel pipe pile foundation construction, in particular to a steel pipe pile construction method in case of riprap or other obstacle conditions. Background technique [0002] Cross-sea bridges have developed extremely rapidly in recent years, and they are constantly breaking records with the largest span and longest bridge. Since the operation at sea is different from the operation on land, the work space is limited. At present, offshore steel trestle and steel platform are mostly used in China to achieve the purpose of offshore construction. The structural design of steel trestle bridges is not uncommon, with little differences. Most of the foundations are based on steel pipe piles, which are inserted and driven to the design depth by vibrating hammers to meet the bearing requirements. However, the construction of steel pipe piles has requirements on the geological conditions of the seabed. In case of riprap, the ...

Claims

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Application Information

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IPC IPC(8): E02D3/08E02D15/10E02D23/00E01D21/00
CPCE01D21/00E02D3/08E02D15/10E02D23/00
Inventor 张凡亮余流李利剑李建辉
Owner CHINA CONSTR SIXTH ENG BUREAU CIVILENG
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