CN202247871U

CN202247871U - Annular seal pile head for supersoft foundation cast-in-place thin-wall concrete composite pile

Info

Publication number: CN202247871U
Application number: CN2010206561670U
Authority: CN
Inventors: 常雷
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-12-10
Filing date: 2010-12-10
Publication date: 2012-05-30
Anticipated expiration: 2020-12-10

Abstract

The utility model discloses an annular seal pile head for a supersoft foundation cast-in-place thin-wall concrete composite pile, which comprises a reinforced concrete annular pile head labeled C30, an annular seal pile head waistline seal belt, an inner steel casing bottom steel pressing plate and an inner steel casing bottom seal steel ring. The construction technology is that force is transferred by the inner steel casing bottom steel pressing plate to the annular seal pile head to conduct vibration and pressing, and the pile head waistline seal belt slides downward along the outer steel casing inner wall in a sealing mode simultaneously so as to enable the pile head to be rapidly sunk at the position of designed soil layer elevation in a vibrating mode. The annular seal pile head can effectively prevent water from entering an inner steel casing cavity and an outer inner steel casing cavity so as to avoid influence on quality of the cast-in-place concrete composite pile, can save more than 80% of seawall explosion silt-extruding excavated rocks, can improve sing-pile bearing capability of the composite pile and is suitable for construction in supersoft foundations of oceans, lakes, rivers and the like.

Description

The ring packing pile crown that is used for the cast-in-place thin wall concrete composite pile of ultra-soft foundation

Technical field

The utility model relates to a kind of construction technology that is used for the ring packing pile crown of the cast-in-place thin wall concrete composite pile of ultra-soft foundation; Be in order to ensure the pile quality of cast-in-place composite pile in all kinds of oceans, lake, river ultra-soft foundation soil better, to guarantee the total quality of all kinds of composite foundation processing and dykes and dams, barricade and foundation pit supporting construction better.

Background technology

At present; Handle in the construction of the cast-in-place mixed earth stake of all kinds of ultra-soft foundation soil in ocean, lake, river etc.; Traditional cast-in-situ concrete pile construction method is earlier single steel casing to be squeezed into to fetch earth through punching, excavation or auger again not only to have increased engineering quantity and bring pollution in secondary desilting transportation, to pollute surrounding enviroment once more for on-the-spot regional environment; Also cause the too much blocked up pile quality that influences of residue at the bottom of the concrete pile easily, further need use consuming time the taking a lot of work again of a large amount of cast-in-situ concrete and increase engineering cost.

At present, the pile crown of multi-disc interlock steel flap valve is applied in and still has deficiency and defective in ocean, lake, the river construction:

1, in the ocean, lake, river construct in the ultra-soft base waters, secondary water can penetrate in the casing chamber through steel flap valve plate interlock pile crown weak part place influences pile quality.

2, for guaranteeing that pile quality must be through drawing water in the chamber or building the back cover underwater concrete in advance, this construction link has increased construction intensity and difficulty has also increased the equipment cost expense.

In order to overcome the above-mentioned deficiency that in work progress, exists; Avoid in the casing chamber water inlet influence in situ concrete pile pile quality minimizing construction intensity and difficulty; Shorten construction period and improve the efficiency of construction expense that reduces cost, just become the technical problem that this patent scheme will solve.

The utility model content

To the problems referred to above; The utility model aims to provide a kind of ring packing pile crown that is used for the cast-in-place thin wall concrete composite pile of ultra-soft foundation, and it comprises C30 label steel concrete ring packing pile crown, ring packing pile crown stringcourse band, interior steel casing bottom steel pressing plate, interior steel casing bottom seals steel loop composition; Said pile crown stringcourse is provided with the groove band; Said pile crown end face has keeper plate of steel; Said pile crown end face has the sealing steel loop.

Description of drawings

Fig. 1 is the utility model steel concrete ring packing pile crown technological principle sketch map.

Fig. 2 is the utility model steel concrete ring packing pile crown floor map.

Fig. 3 is a steel casing bottom steel pressing plate and sealing steel loop generalized section in the utility model.

Fig. 4 is the utility model steel concrete ring packing pile crown generalized section.

Its description of symbols: interior steel casing 1, outer steel casing 2, interior steel casing bottom steel pressing plate 3, interior steel casing bottom seals steel loop 4, ring packing pile crown stringcourse groove band 5, C30 label steel concrete ring packing pile crown 6, ring packing pile crown end face groove 7, interior steel casing bottom seals steel loop indent 8, the pile crown cage of reinforcement 9, the pile crown suspension ring 10

The specific embodiment

Below in conjunction with accompanying drawing and specifically execute the example the utility model scheme is explained further details:

Like Fig. 1,2,3, shown in 4; The utility model provides a kind of ring packing pile crown that is used for the cast-in-place thin wall concrete composite pile of ultra-soft foundation; It comprises C30 label steel concrete ring packing pile crown, ring packing pile crown stringcourse band, interior steel casing bottom steel pressing plate, interior steel casing bottom seals steel loop member composition; It is to execute to shake to the ring packing pile crown through the power transmission of interior steel casing bottom steel pressing plate to exert pressure; Pile crown stringcourse band is shaken pile crown fast and sinks to the construction technology at soil layer design elevation place simultaneously along the downward slippage of outer steel casing inner wall sealing; Ring packing stake point sinks in back, the position inspection casing chamber and whether seeps water and concrete perfusion steel casing in extricating oneself from a predicament and brace oneself up to action respectively more thereafter 1With outer steel casing 2And move on to subsequent processing construction.

In practice of construction, the constructure scheme of the utility model specifically adopts following steps:

One, by shown in Figure 1, the stake position of hanging appointment to outer steel casing is earlier gone up the location and is sunk to the soil layer absolute altitude place that designes and constructes fast.

Two, press Fig. 2,3, shown in 4; Hang C30 label steel concrete ring packing pile crown the stake position of appointment and go up the location; Execute to shake to the ring packing pile crown through the power transmission of interior steel casing bottom steel pressing plate and exert pressure; Pile crown stringcourse band is shaken pile crown fast and sinks to soil layer design elevation place simultaneously along the downward slippage of outer steel casing inner wall sealing.

Three, beginning fluid concrete, steel casing in treating to pull out slowly after cast-in-situ concrete is accomplished pulls out outer steel casing more slowly and hangs on next flow process stake position and locate.

Practical implementation method and result

1) cast-in-place plain concrete composite pile type

Soil layer design and construction absolute altitude place is upward located and sunk to fast in a, elder generation to the stake position that outer steel casing hangs appointment.

The location is gone up in b, the stake position of hanging appointment to C30 label steel concrete ring packing pile crown; Execute to shake to the ring packing pile crown through the power transmission of interior steel casing bottom steel pressing plate and exert pressure; Pile crown stringcourse band is shaken pile crown fast and sinks to soil layer design elevation place simultaneously along the downward slippage of outer steel casing inner wall sealing.

C, beginning fluid concrete, steel casing in treating to pull out slowly after cast-in-situ concrete is accomplished pulls out outer steel casing more slowly and hangs on next flow process stake position and locate.

2) the inner chamber earth pillar soil cast-in-place solid concrete composite pile type of reinforcing cage that fetches earth+put

Reach at 75% o'clock at the above-mentioned a of completion, b, c construction sequence concrete strength to be built; Adopting screw drilling machine or manual work to dig an inner chamber earth pillar soil takes out; And hang onto in the earth pillar soil inner chamber secondary fluid concrete again in location to the reinforcing cage made, finally form the solid composite stake.

The above; Be merely preferable case study on implementation in the utility model scheme; Every trickle modification of above case study on implementation being done according to the utility model patent scheme of any essence, be equal to replacement and improve, all should be included within the protection domain of the utility model patent scheme.

Claims

1. ring packing pile crown that is used for the cast-in-place thin wall concrete composite pile of ultra-soft foundation, it comprises that C30 label steel concrete ring packing pile crown, ring packing pile crown stringcourse band, interior steel casing bottom steel pressing plate, interior steel casing bottom seals steel loop form; Said pile crown stringcourse is provided with the groove band; Said pile crown end face has keeper plate of steel; Said pile crown end face has the sealing steel loop.