CN200955146Y

CN200955146Y - Multi-stage sink-pipe bored concrete pile

Info

Publication number: CN200955146Y
Application number: CN 200620093004
Authority: CN
Inventors: 郑新俊
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-08-31
Filing date: 2006-08-31
Publication date: 2007-10-03
Anticipated expiration: 2016-08-31

Abstract

The utility model relates to a bottom-expanding pile for construction foundation use, in particular to a sinking cast-in-place pile for high-rise buildings. The structure of the utility model is: the lower inserted steel reinforcement of the upper pile body is positioned within the upper cast-in-situ pile body, the upper inserted steel reinforcement and the lower inserted steel reinforcement of the lower pile body are positioned within the lower tubular prefabricated pile body, the lower inserted steel reinforcement of the lower pile body is hammered into the hardpan through the cast-in-situ base, the upper inserted steel reinforcement of the lower pile body connects with the lower inserted steel reinforcement of the upper pile body, with the upper cast-in-situ pile body being connected with the anchor of the lower tubular prefabricated pile body through the upper cast-in-situ concrete base at the joints, the inferior part of the lower tubular prefabricated pile body is provided with a cast-in-situ concrete base, the radiation reinforcement is positioned within the cast-in-situ concrete base and the upper cast-in-situ concrete base, the superior of the upper cast-in-situ pile body is provided with one-level or multilevel cast-in-situ pile body. The utility model obviously improves bearing capacity of single pile and utilization ratio of material intensity and is used widely.

Description

Multistage tube-sinking cast-in-situ pile

Affiliated technical field

The utility model relates to the expanded bore pile that uses in a kind of building foundation, particularly relates to the multistage tube-sinking cast-in-situ pile that a kind of suitable highrise building is used.

Background technology

At present in the pile foundation engineering of ground, adopt three kinds of tube-sinking cast-in-situ pile, preformed pile and large diameter bored piles usually.Wherein the large diameter bored pile bearing capacity is the highest, but its involve great expense, work efficiency is low, and is and seriously polluted during construction, so only be used for highrise building and the high building of requirement for bearing capacity.The quality of preformed pile is good, bearing capacity is also higher, but its cost is also high, generally is used for the higher building of safe class.All belong to friction pile by the described three kinds of stakes of classifying of holding capacity situation.What wherein be most widely used is tube-sinking cast-in-situ pile, account for 50% of all kinds of stake total quantitys, but because the soil property age difference that the earth's crust forms, soft foundation is soft usually with the increase of the crust layer degree of depth, hardpan is alternately state, when continuous piling construction, after execute stake and can produce extruding soil layer, the stake that will have influence on perfusion formerly and not solidify fully as yet, especially especially serious at the intersection of weak soil layer and hardpan, broken pile often appears, necking, thus can't meet the quality requirement of tube-sinking cast-in-situ pile caused, cause down stake to be gathered, cause soil body gross distortion, even jeopardize the quality of pile body; This another shortcoming is that bearing capacity is low, be to increase bearing capacity, the general way that adopts at the bottom of after irritating concrete cast pile body, adding companding, but because of its utilization add companding at the bottom of mode make the uncertain and standard of its shape size, its application is limited to.

The utility model content

The utility model provides a kind of highly versatile applied widely at the problem that prior art exists, and can obviously improve strength of materials utilization rate, the multistage tube-sinking cast-in-situ pile that bearing capacity of single pile is high.

The technical scheme that the utility model technical solution problem is adopted is: multistage tube-sinking cast-in-situ pile, its structure is as follows: be provided with joint bar 6 under the epimere pile body in the cast-in-place pile body 4 of epimere, be provided with on the hypomere pile body joint bar 5 under the joint bar 7 and hypomere pile body in the hypomere tubulose precast pile 3, joint bar 5 passes cast-in-situ base 1 and hammers into hardpan under the hypomere pile body, on the hypomere pile body under joint bar 7 and the epimere pile body joint bar 6 overlap mutually, lap-joint by on Cast-in-place concrete base 2 cast-in-place pile body 4 of epimere and 3 anchorings of hypomere tubulose precast pile are fused, the lower end of hypomere tubulose precast pile 3 is provided with Cast-in-place concrete base 1, radiation muscle 8 is set in Cast-in-place concrete base 1 and last Cast-in-place concrete base 2, and the upper end of the cast-in-place pile body 4 of epimere also is provided with one or more levels cast-in-place pile body.

The center of cast-in-place pile body 4 of the center of described Cast-in-place concrete base 1 and last Cast-in-place concrete base 2 and epimere and hypomere tubulose precast pile 3 is on same axis.

The vertical section of described Cast-in-place concrete base 1 and last Cast-in-place concrete base 2 is up-small and down-big trapezoidal or sharpening triangle.

The utility model has compared with prior art improved the bearing capacity of single pile and the utilization rate of the strength of materials, reaches the Expected Results of design easily, satisfies the needs of construction work better, and is simultaneously applied widely.

Description of drawings

Fig. 1 is the structural representation of the multistage tube-sinking cast-in-situ pile of the utility model.

Among the figure: 1, Cast-in-place concrete base; 2, go up the Cast-in-place concrete base; 3, hypomere tubulose precast pile; 4, the cast-in-place pile body of epimere; 5, joint bar under the hypomere pile body; 6, joint bar under the epimere pile body; 7, joint bar on the hypomere pile body; 8, radiation muscle, 9, cast-in-place pile body.

The specific embodiment

Embodiment of the present utility model is described in detail in conjunction with the accompanying drawings, but protection domain of the present utility model is not limit by embodiment.

As shown in Figure 1 be the utility model structural representation, be provided with joint bar 6 under the epimere pile body in the cast-in-place pile body 4 of epimere, be provided with on the hypomere pile body joint bar 5 under the joint bar 7 and hypomere pile body in the hypomere tubulose precast pile 3, joint bar 5 passes cast-in-situ base 1 and hammers into hardpan under the hypomere pile body, on the hypomere pile body under joint bar 7 and the epimere pile body joint bar 6 overlap mutually, lap-joint by on Cast-in-place concrete base 2 cast-in-place pile body 4 of epimere and 3 anchorings of hypomere tubulose precast pile are fused, the lower end of hypomere tubulose precast pile 3 is provided with Cast-in-place concrete base 1, radiation muscle 8 is set in Cast-in-place concrete base 1 and last Cast-in-place concrete base 2, and the upper end of the cast-in-place pile body 4 of epimere also is provided with one or more levels cast-in-place pile body 9.The job practices of present embodiment can be constructed according to common process.

The center of cast-in-place pile body 4 of the center of Cast-in-place concrete base 1 and last Cast-in-place concrete base 2 and epimere and hypomere tubulose precast pile 3 is on same axis.

Cast-in-place concrete base 1 and last Cast-in-place concrete base 2 vertical sections are up-small and down-big trapezoidal or sharpening triangle.

Claims

1, multistage tube-sinking cast-in-situ pile, it is characterized in that structure is as follows: be provided with joint bar under the epimere pile body (6) in the cast-in-place pile body of epimere (4), be provided with joint bar (5) under joint bar on the hypomere pile body (7) and the hypomere pile body in the hypomere tubulose precast pile (3), joint bar under the hypomere pile body (5) passes cast-in-situ base (1) and hammers into hardpan, joint bar (6) overlaps mutually under joint bar on the hypomere pile body (7) and the epimere pile body, Cast-in-place concrete base (2) fuses cast-in-place pile body of epimere (4) and hypomere tubulose precast pile (3) anchoring on lap-joint passes through, the lower end of hypomere tubulose precast pile (3) is provided with Cast-in-place concrete base (1), radiation muscle (8) is set in Cast-in-place concrete base (1) and last Cast-in-place concrete base (2), and the upper end of the cast-in-place pile body of epimere (4) also is provided with one or more levels cast-in-place pile body (9).

2, multistage tube-sinking cast-in-situ pile according to claim 1, the center that it is characterized in that the center of described Cast-in-place concrete base (1) and last Cast-in-place concrete base (2) and cast-in-place pile body of epimere (4) and hypomere tubulose precast pile (3) is on same axis.

3, multistage tube-sinking cast-in-situ pile according to claim 1 is characterized in that the vertical section of described Cast-in-place concrete base (1) and last Cast-in-place concrete base (2) is up-small and down-big trapezoidal or sharpening triangle.