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Multifunctional cofferdam of steel sheet piles and concrete arch rings construction method thereof

A construction method and steel sheet pile technology, applied in sheet pile wall, foundation structure engineering, construction, etc., can solve the problems of long construction period and narrow working space, and achieve the effect of reducing construction cost, shortening construction period and concise enclosure structure.

Active Publication Date: 2011-08-10
GUANGDONG GUANYUE HIGHWAY & BRIDGE
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

The horizontal top strut support occupies most of the internal space of the cofferdam, so the working space is narrow and the construction period is long

Method used

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  • Multifunctional cofferdam of steel sheet piles and concrete arch rings construction method thereof
  • Multifunctional cofferdam of steel sheet piles and concrete arch rings construction method thereof
  • Multifunctional cofferdam of steel sheet piles and concrete arch rings construction method thereof

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Embodiment Construction

[0051] Examples see Figure 1 to Figure 6As shown, the Lijiasha Bridge is a super-large bridge on the Guangzhou South Second Ring Expressway. It is located at the Lijiasha Waterway at the junction of Guangzhou’s Panyu District and Foshan’s Shunde District. The prestressed concrete cable-stayed bridge with twin towers and four cable planes has a total length of 440m. It adopts two parallel up and down bridges. The two main girders are completely separated laterally. The width of the single bridge is 23 meters, the clear distance between the two bridges is 4m, and the total width of the bridge deck is 50m. The main piers Z3 and Z4 are near the inner side of the embankment. Among them, Z3 is all located in the water, and the bearing platform of Z4 is located on the shoal. Z3# and Z4# main piers have 4 caps in total, and each cap is set with 9 φ2.5m pile foundations, and the pile length is about 45-50m. The Z3# and Z4# main piers are double-width with a total of 4 caps. The str...

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Abstract

The invention relates to a multifunctional cofferdam of steel sheet piles and concrete arch rings and a construction method thereof. An annular cofferdam is surrounded by the steel sheet piles around the position of a bearing platform; the concrete arch rings are cast in site close to the inner side of the steel sheet piles; the steel sheet piles and the concrete arches are pulled and tied by diagonal pull rods welded on the inner sidewalls of the steel sheet piles; vertical rods are uniformly distributed between adjacent two concrete arch rings; and by manufacturing the cofferdam to be circular as well as digging away soil bodies and casting multilayer concrete arch rings on the inner side of the cofferdam at the same time, split rods and inner supports of a construction steel platform and a construction space in water are not needed to be erected in advance. Compared with a traditional cofferdam or steel suspension box, the multifunctional cofferdam has more excellent construction working space, is beneficial to reducing construction cost, and can shorten construction period. The multifunctional cofferdam can be widely applied to basic construction of large bridges and the like in positions of water, beaches, soft foundations and the like.

Description

technical field [0001] The invention relates to a steel sheet pile cofferdam and a construction method for a pier foundation thereof. Background technique [0002] For long-span bridges spanning large rivers or bays, the main piers (towers) are generally located in the water or shoal area near the embankment (extended bank), and most of the foundation structures are pile group caps, and for the sake of beauty, generally put The top surface of the cap is placed on the water surface (at low water level) or even under the river bed, which is what we often call the bottom cap foundation. [0003] According to the traditional construction method to construct this kind of bridge foundation, the steel platform for construction in water is generally erected first, and then the pile foundation steel casing is drilled to carry out the pile foundation construction in water. After all the pile foundations of the pier are completed, the steel platform is removed, and then the cofferdam o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D19/04E02D5/04
Inventor 房金钱刘剑雄王树林付荣华熊锋陈建红李自坤
Owner GUANGDONG GUANYUE HIGHWAY & BRIDGE
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