CN218027620U

CN218027620U - Precast pile capable of forming high-bearing capacity capillary pile

Info

Publication number: CN218027620U
Application number: CN202222157571.9U
Authority: CN
Inventors: 陈家冬; 汪小健
Original assignee: Jiangsu Foundation Engineering Co ltd
Current assignee: Jiangsu Foundation Engineering Co ltd
Priority date: 2022-08-16
Filing date: 2022-08-16
Publication date: 2022-12-13
Anticipated expiration: 2032-08-16

Abstract

The utility model relates to a precast pile field discloses a precast pile that can form high bearing capacity capillary pile, it includes the precast pile body, the inside of precast pile body is provided with the slip casting passageway along its length direction, the slip casting passageway is close to the one end and the outside intercommunication on precast pile body pile top, set up a plurality of slip casting mouths along precast pile body length direction on the lateral wall of precast pile body, slip casting mouth and slip casting passageway intercommunication, the slip casting passageway is used for carrying out high-pressure slip casting after the precast pile body is squeezed into the soil layer. This application has the effect that promotes stake bearing capacity in silt soil layer.

Description

Precast pile capable of forming high-bearing capacity capillary pile

Technical Field

The application relates to the field of precast piles, in particular to a precast pile capable of forming a high-bearing capacity capillary pile.

Background

The prebacked cement soil pile is called as a precast pile for short, can be precast in a factory or a construction site, and is suitable for foundation treatment such as silt, mucky soil, cohesive soil, silt, sandy soil, artificial filling and the like.

In the process of implementing the application, the inventor finds that at least the following problems exist in the technology: when the precast pile is driven into a silt soil layer, the bearing capacity of the pile is not high due to poor soil property of the pile side.

SUMMERY OF THE UTILITY MODEL

In order to promote the bearing capacity of a pile in a silt soil layer, the application provides a precast pile capable of forming a high-bearing capacity capillary pile.

The application provides a can form precast pile of high bearing capacity capillary pile adopts following technical scheme:

the utility model provides a can form precast pile of high bearing capacity capillary pile, includes the precast pile body, the inside of precast pile body is provided with the slip casting passageway along its length direction, the slip casting passageway is close to the one end and the outside intercommunication of precast pile body pile top, follow on the lateral wall of precast pile body a plurality of slip casting mouths are seted up to precast pile body length direction, the slip casting mouth with slip casting passageway intercommunication, the slip casting passageway is used for carry out high-pressure slip casting behind the precast pile body squeeze into the soil layer.

Through adopting above-mentioned technical scheme, will set up the precast pile body of slip casting passageway and slip casting mouth and squeeze into silt, after the construction to elevation, through to the inside high-pressure slip casting of slip casting passageway, make grout flow from slip casting mouth department, form continuous cement thick liquid in the weak soil of precast pile body lateral wall to promote the intensity index of the peripheral weak soil of precast pile body, increase the friction coefficient of precast pile body stake side, finally promote the bearing capacity of precast pile body. In addition, the cement grout on the side surface of the precast pile body and the cement grout of the grouting channel can be solidified together, and a capillary pile is formed at each grouting opening, so that the bearing capacity of the whole precast pile is improved.

Optionally, the grouting channel is provided with a plurality of along the periphery of precast pile body, the grouting opening corresponds every the grouting channel all is provided with a set of.

Through adopting above-mentioned technical scheme, through a plurality of slip casting passageway cooperation slip casting mouth, all form continuous cement thick liquid in the weak soil around making the precast pile body to further promote the intensity index of the weak soil around the precast pile body, promote the bearing capacity of precast pile body.

Optionally, an expansion groove is formed in the grouting opening, and the expansion groove gradually increases along a direction from the approach of the grouting opening to the distance of the grouting opening.

Through adopting above-mentioned technical scheme, offer the expansion groove in slip casting mouth department, make things convenient for the grout that two adjacent slip casting mouths flow to mix together to form continuous cement thick liquid in the weak soil of precast pile body lateral wall.

Optionally, reinforcing steel bars are arranged on the side walls of the expansion grooves, one ends of the reinforcing steel bars are embedded in the precast pile body, and the other ends of the reinforcing steel bars are bent towards the direction close to the grouting opening.

Through adopting above-mentioned technical scheme, through setting up the reinforcing bar on the expansion groove lateral wall, the cement thick liquid flows out behind the slip casting mouth with the reinforcing bar cladding to make the inside grout of expansion groove solidify the back and be more reliable with precast pile body coupling.

Optionally, the reinforcing steel bars are provided with a plurality of reinforcing steel bars along the circumferential direction of the grouting opening, and the reinforcing steel bars are exposed out of the end part of the precast pile body and fixedly connected with the end part of the precast pile body.

Through adopting above-mentioned technical scheme, through the quantity that increases the reinforcing bar, make the grout of expansion inslot portion solidify the back higher with the joint strength of precast pile body, carry the bearing capacity of precast pile body.

Optionally, the distance between two adjacent grouting holes is 10cm.

Through adopting above-mentioned technical scheme, set up the distance between two adjacent slip casting mouths into 10cm, can conveniently form continuous cement thick liquid in the weak soil of precast pile body lateral wall, reduce because of the distance between two slip casting mouths is too big, lead to the unable continuous possibility of cement thick liquid.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the precast pile body with the grouting channel and the grouting opening is driven into silt, after construction to elevation, through to the inside high-pressure grouting of grouting channel, the grout flows out from the grouting opening, forms continuous cement grout in the weak soil of precast pile body lateral wall, thereby promotes the intensity index of the peripheral weak soil of precast pile body, increases the friction coefficient of precast pile body pile side, finally promotes the bearing capacity of precast pile body. In addition, the cement grout on the side surface of the precast pile body and the cement grout of the grouting channel can be solidified together, and a capillary pile can be formed at each grouting opening, so that the bearing capacity of the whole precast pile is improved;

2. continuous cement slurry is formed in soft soil around the precast pile body by matching the plurality of grouting channels with the grouting ports, so that the strength index of the soft soil around the precast pile body is further improved, and the bearing capacity of the precast pile body is improved;

3. the expansion groove is formed in the grouting opening, so that high-pressure grouting cement slurry can conveniently flow out of the grouting opening to reach the adjacent grouting opening, and continuous cement slurry is formed in soft soil on the side wall of the precast pile body.

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment of the present application.

Fig. 2 is a schematic view of an embodiment of the present application embodying a reinforcing bar structure.

Description of the reference numerals:

1. prefabricating a pile body; 2. grouting a channel; 3. a grouting port; 4. an expansion slot; 5. and reinforcing the steel bars.

Detailed Description

The present application is described in further detail below with reference to figures 1-2.

The embodiment of the application discloses a precast pile capable of forming a high-bearing capacity capillary pile. Referring to fig. 1 and 2, a precast pile that can form high bearing capacity capillary pile includes precast pile body 1, and this embodiment precast pile body 1 is square precast pile, is provided with slip casting passageway 2 along its length direction in precast pile body 1's inside, and slip casting passageway 2 evenly is provided with four on precast pile body 1, and slip casting passageway 2 is located the position that is close to precast pile body 1 lateral wall. All be provided with a set of slip casting mouth 3 on precast pile body 1 lateral wall all around, every group slip casting mouth 3 is provided with a plurality of along 1 length direction of precast pile body, and every slip casting mouth 3 all communicates with slip casting passageway 2.

Referring to fig. 2, after the precast pile body 1 is constructed to the elevation, high-pressure grouting is performed inside the grouting channel 2, so that high-pressure cement slurry flows out from the grouting opening 3, continuous cement slurry is formed in soft soil on the side wall of the precast pile body 1, the strength index of the soft soil on the periphery of the precast pile body 1 is improved, and the friction coefficient of the pile side of the precast pile body 1 is increased. In addition, after the poured cement slurry is solidified, a capillary pile is formed at each grouting port 3, thereby improving the bearing capacity of the whole precast pile.

Referring to fig. 1 and 2, in the same group of grouting openings 3, the distance between two adjacent grouting openings 3 is 10cm, each grouting opening 3 is provided with an expansion groove 4, and the expansion grooves 4 gradually increase along the direction from the position close to the grouting opening 3 to the position far away from the grouting opening 3. When carrying out high-pressure slip casting to slip casting 2 insides, make things convenient for the grout that two adjacent slip casting mouths 3 flow to mix together to form continuous cement thick liquid easily in the weak soil of 1 lateral wall of precast pile body.

Referring to fig. 2, for further strengthen the bearing capacity of precast pile body 1, be provided with reinforcing bar 5 on the lateral wall of every expansion slot 4, reinforcing bar 5 one end is pre-buried inside precast pile body 1, and the other end orientation is buckled near the direction of slip casting mouth 3, and reinforcing bar 5 does not bulge precast pile body 1. When preparation precast pile body 1, reinforcing bar 5 is perpendicular with 1 length direction of precast pile body, after the 1 shaping drawing of patterns of precast pile body, carries out buckling of reinforcing bar 5 again.

Referring to fig. 2, the reinforcing steel bars 5 are provided with a plurality of reinforcing steel bars 5 along the circumferential direction of the grouting opening 3, two reinforcing steel bars 5 are taken as an example in the embodiment, and the end portions of the two reinforcing steel bars 5 exposed out of the precast pile body 1 are welded together. The reinforcing steel bar 5 is coated after the cement slurry flows out of the grouting opening 3, so that the cement slurry in the expansion groove 4 is more reliably connected with the precast pile body 1 after being solidified.

The implementation principle of the precast pile capable of forming the high-bearing capacity capillary pile in the embodiment of the application is as follows: after the precast pile body 1 provided with the grouting channel 2 and the grouting opening 3 is constructed to the elevation, high-pressure grouting is performed inside the grouting channel 2, so that cement slurry flows out from the grouting opening 3, continuous cement slurry is formed in soft soil around the precast pile body 1, the effect of improving the strength index of the soft soil around the precast pile body 1 is achieved, the friction coefficient of the pile side of the precast pile body 1 is increased, meanwhile, a capillary pile is formed at each grouting opening 3 after the poured cement slurry is solidified, and finally the bearing capacity of the whole precast pile is improved.

The above are preferred embodiments of the present application, and the scope of protection of the present application is not limited thereto, so: equivalent changes in structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A precast pile that can form high bearing capacity capillary pile, includes precast pile body (1), its characterized in that: the inside of precast pile body (1) is provided with slip casting passageway (2) along its length direction, slip casting passageway (2) are close to the one end and the outside intercommunication of precast pile body (1) pile top, follow on the lateral wall of precast pile body (1) a plurality of slip casting mouths (3) are seted up to precast pile body (1) length direction, slip casting mouth (3) with slip casting passageway (2) intercommunication, slip casting passageway (2) are used for carry out high-pressure slip casting after precast pile body (1) is squeezed into the soil layer.

2. A pre-formed pile capable of forming a high load bearing capillary pile as claimed in claim 1 wherein: slip casting passageway (2) are followed be provided with a plurality of around precast pile body (1), slip casting mouth (3) correspond every slip casting passageway (2) all are provided with a set ofly.

3. A pre-formed pile capable of forming a high load bearing capillary pile as claimed in claim 1 wherein: the expansion groove (4) is arranged at the grouting opening (3), and the expansion groove (4) is gradually enlarged along the direction from the approach of the grouting opening (3) to the distance of the grouting opening (3).

4. A pre-pile to form a high load bearing capillary pile as claimed in claim 3, wherein: be provided with on the lateral wall of expansion groove (4) reinforcing bar (5), reinforcing bar (5) one end is pre-buried inside precast pile body (1), the other end orientation is close to the direction of slip casting mouth (3) is buckled.

5. A pre-formed pile capable of forming a high load bearing capillary pile as claimed in claim 4 wherein: the reinforcing steel bars (5) are arranged in the circumferential direction of the grouting opening (3) and exposed out of the reinforcing steel bars (5) in a plurality of fixed connection with the end of the precast pile body (1).

6. A pre-fabricated pile for forming a high load bearing capillary pile according to claim 1, wherein: the distance between two adjacent grouting holes (3) is 10cm.