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Set bearing platform foundations and construction method thereof

A technology of foundation construction and construction method, applied in the direction of basic structure engineering, construction, etc., can solve problems such as difficult construction operation, difficulty in ensuring project quality and safety, slow construction progress, etc., to achieve reduced construction difficulties, reliable construction methods, and reasonable structural design Effect

Active Publication Date: 2012-11-07
CHINA RAILWAY FIFTH SURVEY & DESIGN INST GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional pile cap foundation adopts in-situ pouring piles and caps for bridge foundations. In-situ pouring piles and caps have strong technical and economic advantages on land, but there are many safety and quality problems in water, especially in deep water. General soil cofferdams, wooden sheet pile cofferdams and other waterproof technologies cannot be used for construction, and must be equipped with waterproof, soil (sand), anti-scouring, anti-landslide, and temporary enclosure structures that can support foundation pits, that is, cofferdams. The foundation construction of bored pile caps in water for the cofferdam still has disadvantages such as difficult construction operations, difficulty in guaranteeing project quality and safety, and slow construction progress.

Method used

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  • Set bearing platform foundations and construction method thereof
  • Set bearing platform foundations and construction method thereof
  • Set bearing platform foundations and construction method thereof

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specific Embodiment approach

[0019] The pile cap foundation of the present invention is set, and its preferred embodiment is:

[0020] Including piles, the piles are vertical, the caps are arranged on the top of the piles, the caps are horizontally arranged, the piles and the caps are connected by cast-in-place concrete, and the bottom of the cast-in-place concrete Equipped with a temporary water-tight air bag.

[0021] The pile includes a lower section pile and an upper section pile, the cross section of the upper section pile is circular, and the diameter is larger than that of the lower section pile, the upper section pile is a steel pipe and reinforced concrete composite material structure, and the lower section pile is a reinforced concrete structure. The bearing platform is an integral reinforced concrete structure, and the temporary water-stop air bag is inflated rubber.

[0022] The outer layer of the upper pile is a steel pipe with multiple horizontal circular flat steel welded on the inner wall...

specific Embodiment

[0034] Such as Figure 1 to Figure 6 As shown, the number of piles 1 determined according to the design calculation is included. The piles 1 are all vertical. The deck 2 is set horizontally, and the thickness of the deck is 3.5m. The pile 1 and the deck 2 are connected by cast-in-place concrete 3, and the bottom of the cast-in-place concrete 3 is provided with a temporary water-stop air bag 4. During the connection process of pouring the cast-in-place concrete 3, a temporary water-stop air bag 4 is used to stop water.

[0035] The pile 1 includes a lower section pile 5 and an upper section pile 6, the cross section of the upper section pile 6 is circular, the lower section pile 5 is a reinforced concrete structure, and the pile diameter is 1.2m, and the upper section pile 6 is steel pipe and reinforced concrete Composite material structure with a pile diameter of 1.4m. The platform platform 2 is an integral reinforced concrete structure, and the temporary water-stop air bag ...

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Abstract

The invention discloses set bearing platform foundations and a construction method thereof. The foundations comprise piles which are vertical. Bearing platform plates are arranged horizontally on the piles, the piles and the bearing platform plates are connected by cast-in-place concrete, temporary water stop air sacs are arranged on the bottom portion of the cast-in-place concrete. The piles are subjected to in-situ hole drilling and pouring, and the bearing platform plates are precast in overland precast yards. The precast bearing platform plates are transported to bridge locations by land or by water and hoisted by overwater hoisting devices, and the bearing platform foundations are constructed according to the construction method of the set bearing platform foundations. According to the set bearing platform foundations and the construction method, separate precast and assembly of bearing platform foundations can be achieved, influences of adverse factors of deep water, tides, shipping, ecology and the like on deep-water bridge foundation construction in rivers, lakes and seas are reduced, construction difficulties are reduced, the security of engineering quality is guaranteed, and construction progress is expedited. The structure design is reasonable, the construction method is reliable, and the method can be widely applied in deep-water bridge foundation construction of rivers, lakes and seas.

Description

technical field [0001] The invention relates to a bridge foundation and a construction method thereof, in particular to a pile cap foundation and a construction method thereof. Background technique [0002] At present, in the field of bridge construction, bored pile cap foundations are widely used. The traditional pile cap foundation adopts in-situ pouring piles and caps for bridge foundations. In-situ pouring piles and caps have strong technical and economic advantages on land, but there are many safety and quality problems in water, especially in deep water. General soil cofferdams, wooden sheet pile cofferdams and other waterproof technologies cannot be used for construction, and must be equipped with waterproof, soil (sand), anti-scouring, anti-landslide, and temporary enclosure structures that can support foundation pits, that is, cofferdams. The foundation construction of bored pile caps in water for the cofferdam still has disadvantages such as difficult construction...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D27/12E02D27/14
Inventor 张立青杨少宏李闻徐惠纯罗九林程慧林
Owner CHINA RAILWAY FIFTH SURVEY & DESIGN INST GRP
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