CN104631464A

CN104631464A - Construction method for blocking up between bridge high-pile cap underwater steel jacket box bottom and steel casing

Info

Publication number: CN104631464A
Application number: CN201510029608.1A
Authority: CN
Inventors: 王林冬; 黄磊; 陈武军; 章志; 梁炳辉; 刘建国
Original assignee: Shanghai Foundation Engineering Group Co Ltd
Current assignee: Shanghai Foundation Engineering Group Co Ltd
Priority date: 2015-01-21
Filing date: 2015-01-21
Publication date: 2015-05-20

Abstract

The invention relates to a construction method for blocking up between a bridge high-pile cap underwater steel jacket box bottom and a steel casing. A circular flange is formed by a steel plate which is 8 mm thick and 25 cm wide and divided into three pieces, the circular flange is arranged between the steel jacket box bottom plate and the steel casing, and the three wide steel plates are connected with each other through binding with rubber tape; 16# bolts are used for anchoring 25 cm wide and 25 mm thick cord fabric rubber plates at the spacing distance of 10 cm on the flange pieces, the cord fabric rubber plates are connected with the flange in a lap joint mode by 10 cm, and the connecting portions of the flange overlap with each other by 10 cm; on the base plate of the steel jacket box, six 10# steel channels are arranged along a circle of the steel casing to press the tail end of the flange. According to the construction method for blocking up between the bridge high-pile cap underwater steel jacket box bottom and the steel casing, rigidity-flexibility combination is adopted, the situations that concrete leakage occurs when the underwater steel jacket box sinks to the designed position to conduct sub-sealing concrete pouring, and sub-sealing concrete pouring is failed are prevented. A diver does not need to go down to the steel jacket box bottom to check the spacing distance situation between the steel jacket box and the steel casing, the construction operation is simple, the sub-sealing concrete quality and the construction efficiency are improved, and the construction cost is reduced.

Description

Plugging construction method at the bottom of steel jacket box and between steel pile casting in bridge highrise pile cap water

Technical field

To the present invention relates in a kind of bridge highrise pile cap water at the bottom of steel jacket box and blocking technology between steel pile casting, highrise pile cap bottom concrete construction quality in raising bridge water is a kind of less investment and effective construction method.

Background technology

Along with the increase of navigation channel shipping vessels flow and resist crashproof Capability Requirement to improve to bridge, when sluicing of controlling flood allows, major part cross a river, Oversea bridge underwater support table adopt highrise pile cap form, cushion cap are exposed ordinary water level to guarantee navigation safety and to improve bridge-collision-avoidance ability.High-rise pile cap construction all belongs to underwater work, it is most important that cushion cap bottom concrete builds effect, build if having concrete leakage path not check out before bottom concrete is built between steel jacket box and steel pile casting and carry out bottom concrete, it is failed certainly that bottom concrete builds effect, cannot accomplish in casing it is anhydrous operation during bearing platform construction, and follow-up secondary plugging builds certainly comparatively first time, and successful back cover weak effect is a lot, the duration of bearing platform construction also can extend greatly, labor waste is a lot; So steel jacket box how to control well at the bottom of steel pile casting and steel jacket box after sinking to design elevation between gap particularly important.

Summary of the invention

The present invention will solve in existing highway bridge highrise pile cap water easily to form bottom concrete leakage path at the bottom of steel jacket box and between steel pile casting, bottom concrete builds unsuccessful or that effect is poor technical problem, and to provide in a kind of bridge highrise pile cap water plugging construction method between steel jacket box and steel pile casting.

For achieving the above object, the present invention is achieved by the following technical solutions:

In a kind of highrise pile cap water, plugging construction method between steel jacket box and steel pile casting, the steps include:

1) between steel jacket box base plate and steel pile casting, arrange one divides three pieces to organize conglobate flange with the wide steel plate of the thick 25CM of 8mm, connects between three blocks of wide steel plates with rubber strip colligation;

2) press the thick cord rubber tile of the wide 25mm of spacing 10CM anchoring 25CM with 16# bolt thereon by flange piecemeal, cord rubber tile and flange overlap 10CM, dish junction, method hurdle overlapping 10CM each other;

3) on steel jacket box base plate, 6 10# channel-section steels are set along steel pile casting one circle and push down method hurdle dish tail end.

Cord rubber tile used adopts natural rubber to make, its tensile strength >=15Mpa, and continue your A level hardness 60 ± 5.

The invention has the beneficial effects as follows: blocking technology at the bottom of steel jacket box of the present invention and between steel pile casting, adopt the soft combination of steel; Can well carry out that concrete occurs when bottom concrete is built and leak sinking to design attitude by steel jacket box in anti-sealing, the situation that bottom concrete can not built occurs.Namely improve bottom concrete quality, bottom concrete also sinks at the bottom of steel jacket box without the need to diver before building and checks steel jacket box and steel pile casting spacer conditions, improves efficiency of construction, has saved construction cost.

The soft automatic regulating gap form that combines of steel is adopted with the gap between steel pile casting at the bottom of steel jacket box when construction method of the present invention has considered that when mounting flange steel jacket box sinks to design attitude, make that constructing operation is easy, efficiency of construction improve, construction quality promotes, construction cost saving, have a extensive future in similar bridge highrise pile cap steel jacket box construction operating mode.

Accompanying drawing explanation

Fig. 1 is flange mounting plane schematic diagram;

Fig. 2 is that generalized section installed by flange.

Detailed description of the invention

Below in conjunction with accompanying drawing and embodiment, the invention will be further described.

As shown in Figure 1 to Figure 2, plugging construction method between steel jacket box and steel pile casting in bridge highrise pile cap water of the present invention, its construction sequence is:

(1) between steel jacket box base plate 6 and steel pile casting 7, arrange one divides three pieces to organize conglobate flange with the wide steel plate of the thick 25CM of 8mm 3, between three blocks of wide steel plates, use rubber strip 5colligation connects.(Fig. 1)

(2) the thick cord rubber tile 1 of the wide 25mm of spacing 10CM anchoring 25CM is pressed with 16# bolt 2 thereon by flange 3 piecemeal, cord rubber tile 1 and flange 3 overlap 10CM, flange 3 junction is overlapping 10CM(Fig. 1,2 each other), can ensure in steel jacket box sinking watching, to guarantee that steel pile casting is close to by cord rubber tile.

(3) on steel jacket box base plate 6,6 10# channel-section steels are set along steel pile casting 7 one circle 4push down flange 3 tail end (Fig. 2), prevent flange tail end hind wing and form concrete leakage path.

Cord rubber tile 1 used adopts natural rubber to make, its tensile strength >=15Mpa, and continue your A level hardness 60 ± 5.

Claims

1. a plugging construction method at the bottom of steel jacket box and between steel pile casting in bridge highrise pile cap water, it is characterized in that, concrete steps are:

1) one is divided three pieces of circles formed flange (3) with the wide steel plate of the thick 25CM of 8mm is set between steel jacket box base plate (6) and steel pile casting (7), connects with rubber strip (5) colligation between three blocks of wide steel plates;

2) use 16# bolt (2) by the thick cord rubber tile (1) of the wide 25mm of spacing 10CM anchoring 25CM thereon by flange (3) piecemeal, cord rubber tile (1) and flange (3) overlap 10CM, flange (3) junction overlapping 10CM each other;

3) on steel jacket box base plate (6), 6 10# channel-section steels (4) are set along steel pile casting (7) circle and push down flange (3) tail end.

2. plugging construction method at the bottom of steel jacket box and between steel pile casting in bridge highrise pile cap water according to claim 1, it is characterized in that: cord rubber tile (1) used adopts natural rubber to make, its tensile strength >=15Mpa, continue your A level hardness 60 ± 5.