CN202202326U

CN202202326U - High-strength concrete precast pipe pile splicing structure

Info

Publication number: CN202202326U
Application number: CN201120324087XU
Authority: CN
Inventors: 刘衍华; 石立国; 袁建华; 丁鹏; 李严; 余德浩
Original assignee: China Construction Second Engineering Bureau Co Ltd
Current assignee: China Construction Second Engineering Bureau Co Ltd
Priority date: 2011-08-31
Filing date: 2011-08-31
Publication date: 2012-04-25
Anticipated expiration: 2021-08-31

Abstract

The utility model provides a high-strength concrete precast pipe pile splicing structure which comprises a first precast pipe pile and a second precast pipe pile, a reinforcement cage, a reinforcement cage supporting device and pile core concrete, wherein the pile head of the first precast pipe pile and the pile tip of the second precast pipe pile are connected together through welding; the reinforcement cage supporting device is hung in the second precast pipe pile; the reinforcement cage is arranged on the reinforcement cage supporting device; and C40 concrete is fully poured in the pile core. By virtue of the construction of the splicing structure of the first precast high-strength concrete pipe pile and the second precast high-strength concrete pipe pile, the purpose of stably splicing piles in two adjacent soft soil foundations with larger height difference can be realized; the construction method is simple and effective; and the two pipe piles are effectively combined, so that the vertical carrying capacity and horizontal shearing resistance of the piles can be improved while the defects of pile bodies are avoided.

Description

A kind of strong concrete prefabricated tubular pile pile extension structure

Technical field

The present invention relates to civil engineering groundwork and foundation construction field, particularly relate to the construction of strong concrete prefabricated tubular pile.

Background technology

Adopt the prefabricated tubular pile technology in the market in a large number, its speed of application is fast, and quality is controlled easily; Cost is relatively low, receives the welcome of engineering construction and society deeply, and prefabricated tubular pile generally is applicable to soft foundation; Be mainly used in the raising vertical bearing capacity, but in some special landform, because deep foundation ditch is faced in building one side in work progress; Cause foundation soil that pile tube is produced horizontal side pressure, the pile tube cross section is produced shearing, only carry out shearing resistance by weld seam; So this pile tube shear resistant capacity is lower, therefore, should improve the shear resistance of pile tube simply, fast and effectively.

Summary of the invention

The objective of the invention is: a kind of strong concrete prefabricated tubular pile pile extension structure is provided; Can in the soft foundation of the big discrepancy in elevation of adjacent two existence, use; This job practices is simple, effective; Two root canal piles are effectively combined, when avoiding pile defect, can positively improve the vertical bearing capacity and the horizontal shear resistance of stake.

To achieve these goals, technical scheme of the present invention provides a kind of strong concrete prefabricated tubular pile pile extension structure, comprises first prefabricated tubular pile; Second prefabricated tubular pile, reinforcing cage, reinforcing cage bracing or strutting arrangement and inner concrete; The pile crown of first prefabricated tubular pile and the second prefabricated tubular pile stake point link together with the mode of welding; The reinforcing cage bracing or strutting arrangement hangs on second prefabricated tubular pile inside, and reinforcing cage places on the reinforcing cage bracing or strutting arrangement, stake core full irrigation C40 concrete.

Further, the reinforcing cage bracing or strutting arrangement comprises a steel plate pallet more smaller than pile tube internal diameter, and end has the reinforcing bar and the welding of steel plate pallet of crotch, and the reinforcing bar that has crotch can hang on the pile crown place of second prefabricated tubular pile.

Description of drawings

Fig. 1: strong concrete prefabricated tubular pile pile extension organigram.

Fig. 2: the hammering first prefabricated tubular pile sketch map.

Fig. 3: second prefabricated tubular pile stake point is docked and weld sketch map with the first prefabricated tubular pile pile crown.

Fig. 4: hammering second prefabricated tubular pile, until the first prefabricated tubular pile stake point to the bearing stratum sketch map.

Fig. 5: reinforcing cage bracing or strutting arrangement and reinforcing cage sketch map.

Reference numeral: 1-first prefabricated tubular pile, 2-second prefabricated tubular pile, 3-pallet, 4-location-plate, 5-reinforcing cage, 6-cushion cap joint bar, 7-C40 concrete.

The specific embodiment

Below in conjunction with the practical implementation case the present invention is specified as follows: as the strong concrete prefabricated tubular pile pile extension structure of one embodiment of the present of invention, as shown in Figure 1, it comprises first prefabricated tubular pile 1; Second prefabricated tubular pile 2; Reinforcing cage 5, reinforcing cage bracing or strutting arrangement and inner concrete, the pile crown of first prefabricated

tubular pile

1 and 2 points of second prefabricated tubular pile link together with the mode of welding; Reinforcing cage 5 bracing or strutting arrangements hang on second prefabricated tubular pile, 2 inside; The reinforcing cage bracing or strutting arrangement comprises a steel plate pallet 3 more smaller than pile tube internal diameter, and end has the reinforcing bar and 3 welding of steel plate pallet of crotch, and the reinforcing bar that has crotch can hang on the pile crown place of second prefabricated tubular pile 2; Reinforcing cage 5 places on the reinforcing cage bracing or strutting arrangement, stake core full irrigation C40 concrete seven.

The job practices of strong concrete prefabricated tubular pile pile extension structure comprises the steps: at first, and is as shown in Figure 2, behind the preformed pile location; With 1 hammering of first prefabricated tubular pile to the face of land certain depth, till pile driver can not hit once more, as shown in Figure 3 then; 2 points of second prefabricated tubular pile are docked with first prefabricated tubular pile, 1 pile crown, adopt the mode of welding that first prefabricated tubular pile, 1 pile crown and 2 points of second prefabricated tubular pile are linked together, in the welding process; Carry out the weld bond cleaning, remove moisture content, iron rust, grease, dust in the welding point 30mm scope, until exposing metallic luster; Adopt tacking; Second prefabricated tubular pile is hung in the location-plate 4 after the in place and straightening, adopt welding gun electric welding symmetrically 4 ~ 6 points around seam, treat that the fixing back of first, second prefabricated

tubular pile

1,2 pile extensions removes baffle plate; Formally weld 2 sharp docking location stakes of first prefabricated tubular pile, 1 pile crown and second prefabricated tubular pile whole body, one circle full weld; After first prefabricated tubular pile 1 and the 2 welding completion of second prefabricated tubular pile, carry out the test of ultrasonic testing/ ultrasonic examination and small strain; As shown in Figure 4, continue to adopt the mode of hammering, hammering second prefabricated tubular pile 2, hammering repeatedly, until 1 point of first prefabricated tubular pile to bearing stratum; Fig. 5 is reinforcing cage bracing or strutting arrangement and the reinforcing cage 5 that completes, and the reinforcing cage bracing or strutting arrangement comprises a steel plate pallet 3 more smaller than pile tube internal diameter, and end has the reinforcing bar and 3 welding of steel plate pallet of crotch; The reinforcing bar that has crotch can hang on the pile crown place of second prefabricated tubular pile 2, puts into pallet 3 before this, as the fulcrum of reinforcing cage 5; End is had the reinforcing bar and 3 welding of 3mm steel plate pallet of crotch; The reinforcing bar that has crotch hangs on the pile crown place of second prefabricated tubular pile 2, and the reinforcing cage 5 of prefabricated completion is positioned on the pallet 3 of reinforcing cage bracing or strutting arrangement, puts into cushion cap joint bar 6 at last; Adopt artificial C40 inner concrete 7, until the pile crown of second prefabricated tubular pile 2.

Claims

1. a strong concrete prefabricated tubular pile pile extension is constructed; It is characterized in that: comprise first prefabricated tubular pile (1); Second prefabricated tubular pile (2), reinforcing cage (5), reinforcing cage (5) bracing or strutting arrangement and inner concrete; The pile crown of first prefabricated tubular pile (1) and second prefabricated tubular pile (2) stake point link together with the mode of welding; Reinforcing cage (5) bracing or strutting arrangement hangs on second prefabricated tubular pile (2) inside, and reinforcing cage (5) places on the reinforcing cage bracing or strutting arrangement, stake core full irrigation C40 concrete (7).

2. strong concrete prefabricated tubular pile pile extension structure according to claim 1; It is characterized in that the reinforcing cage bracing or strutting arrangement comprises a steel plate pallet (3) more smaller than pile tube internal diameter; End has the reinforcing bar and steel plate pallet (3) welding of crotch, and the reinforcing bar that has crotch can hang on the pile crown place of second prefabricated tubular pile (2).