CN217896458U

CN217896458U - Novel grouting pipe pile

Info

Publication number: CN217896458U
Application number: CN202221002252.4U
Authority: CN
Inventors: 陈泽鑫; 梁仕华; 阮云鹏
Original assignee: Guangdong University of Technology
Current assignee: Guangdong University of Technology
Priority date: 2022-04-27
Filing date: 2022-04-27
Publication date: 2022-11-25
Anticipated expiration: 2032-04-27

Abstract

The utility model discloses a novel grout tubular pile specifically includes: specially-made pipe piles and grouting pipes. Wherein: the grouting pipe is a hollow pipe, and a grouting hole is formed near the tail end of the grouting pipe; the grout stopping plug comprises an upper grout stopping plug and a lower grout stopping plug, trays are arranged at the top and the bottom of the grout stopping plug, and electromagnets are fixed on the trays; in the pipe pile, a group of grouting holes are reserved in each meter range, and at least four grouting holes are reserved in each group of grouting holes; all grouting holes of each group of grouting holes are in the same plane, and each grouting hole plane is perpendicular to the vertical central axis of the tubular pile; the method provided by the utility model can effectively improve the strength of the soft soil layer and improve the bearing capacity of the tubular pile; grouting equipment construction is simple and convenient, can realize recycle.

Description

Novel grouting pipe pile

Technical Field

The utility model relates to a geotechnical engineering technical field especially relates to a novel grout tubular pile.

Background

The PHC tubular pile is widely applied to actual engineering, and has great advantages in the aspects of bearing capacity, construction cost and the like in engineering construction. In the existing PHC tubular pile pressing construction, certain soil layers are weak, so that a pile body cannot achieve the expected bearing capacity.

The existing solution is mostly to carry out soil layer grouting construction before construction, and the drilling is to pour into the curing agent to the soil layer for the soil layer hardens. The existing construction technology has the disadvantages of complex construction process and high cost. Therefore, there is a need to improve and perfect the current grouting and pile-pressing construction process.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of complex grouting process and low grouting efficiency of the prior soil layer. An object of the utility model is to provide a novel grout tubular pile.

The technical scheme who solves its technical problem and adopt of the utility model is:

comprises a novel tubular pile, a common tubular pile, a hollow steel pipe, a grouting pipe, a tray, a rubber grout stopping plug, an electromagnet, a power supply, a grouting pump and a waterproof cable; the novel tubular pile is a tubular pile with a grouting hole reserved on a pile body, and a one-way grout stop plug is arranged in the grouting hole; the grouting pipe is a hollow steel pipe with a closed tail end, and a grouting hole is reserved in the grouting pipe; the tray I and the tray IV are fixed on the grouting pipe; the upper rubber grout stopping plug is fixed at the bottom of the tray I, and the lower rubber grout stopping plug is fixed at the top of the tray IV; the tray II is fixed at the bottom of the upper rubber grout stopping plug, and the tray III is fixed at the top of the lower rubber grout stopping plug; the electromagnet I is fixed at the top of the tray I, and the electromagnet II is fixed at the bottom of the tray IV; waterproof cable I connects electro-magnet I, and waterproof cable II connects electro-magnet II.

Preferably, the novel tubular pile is consistent with a common tubular pile in all other aspects except that a grouting hole is reserved in the tubular pile, and mutual replacement and pile extension operation can be realized through the two tubular piles.

Preferably, novel tubular pile set up a set of grout punch combination at least in each meter scope, and the vertical axis of grout pore axis place plane perpendicular to tubular pile, 4 grout holes of the even symmetrical arrangement of pile body are followed at least to every grout punch combination.

Preferably, the two ends of the hollow steel pipe are connected by threads, the length of each section of the hollow steel pipe is 3-5m, and the thickness of the pipe wall is 3mm.

Preferably, the head end of the grouting pipe is provided with an internal thread which can be connected with the external thread end of the hollow steel pipe, two uniform and symmetrical grouting holes are arranged at a position 40cm away from the tail end, and the diameter of each grouting hole is 5mm; the length of the grouting pipe is 1m, and the thickness of the pipe wall is 3mm.

Preferably, the diameter of the tray is 5cm smaller than that of the inner wall of the tubular pile, and the tray is made of low-carbon steel.

Preferably, the diameters of the rubber grout stop plugs are all smaller than the inner wall of the tubular pile by 3cm.

Preferably, the tray is reserved with a wire hole of a waterproof cable, and a waterproof sealing ring is installed in the wire hole.

Preferably, the outer wall of the hollow steel pipe and the outer wall of the grout pipe are both provided with cable fixing buckles.

Preferably, after all soil layers are grouted, water in the grout stopping plug is drained as soon as possible, the grouting pipe is taken out, and the rubber grout stopping plug and the grouting pipe are cleaned by water so as to be recycled.

Compared with the prior art, the utility model provides a beneficial effect is: the utility model provides a novel grouting pipe pile, reserve the grout hole at the tubular pile, erect the mount at the pile top, put hollow steel pipe into the fixed sleeve and fix and overlap joint, when the grout hole of grouting pipe sinks to predetermined grout position, turn on the power and make the electro-magnet produce the appeal to the tray; when the tray is attracted by the electromagnet, the rubber grout stopping plug is extruded by the tray to enlarge the outer diameter of the grout stopping plug, so that a gap between the inner wall of the full pipe pile and the grout stopping plug is filled, and the grouting pump is connected with the hollow steel pipe for grouting; when the curing agent flows to the inner wall of the tubular pile from the grouting hole of the grouting pipe, the curing agent can only flow to a soil layer from the grouting hole of the tubular pile to finish grouting because the rubber grout stop plug blocks a channel for the up-and-down circulation of the curing agent; after grouting of a certain soil layer is finished, the grouting pump is closed, and the one-way grout stop plug can prevent the curing agent from being poured into the tubular pile from the soil layer; turning off the power supply to restore the rubber grout stop plug to the original state; the fixed sleeve is adjusted, the grouting pipe can be freely moved, when the fixed sleeve is moved to the next grouting position, the operations can be repeated until all soil layers are grouted, and the grouting pipe and the grouting position can be accurately positioned by adjusting the total length of the hollow steel pipe; to sum up, the utility model discloses can realize continuous, segmentation, directional, efficient grout operation.

Drawings

Fig. 1 is a schematic structural view of the novel grouting pipe pile provided by the utility model.

Fig. 2 is the utility model provides a novel grout pipe local enlargements of grout tubular pile.

Fig. 3 is a schematic view of the grouting state of the novel grouting pipe pile provided by the utility model.

Fig. 4 is a top view of the novel grouting pipe pile provided by the utility model.

The reference numerals in the above figures illustrate:

1-grouting pump, 2-grouting pump pipeline, 3-grouting pipe, 4-power supply, 5-waterproof cable fixing buckle, 6-one-way grout stop plug, 7-pipe pile grouting hole, 8-electromagnet I, 9-tray I, 10-upper rubber grout stop plug, 11-tray II, 12-waterproof cable I, 13-waterproof cable II, 14-tray III, 15-lower rubber grout stop plug, 16-tray IV, 17-electromagnet II, 18-fixing sleeve, 19-sleeve screw, 20-fixing frame, 21-novel pipe pile, 22-common pipe pile I, 23-hard soil layer A, 24-soft soil layer B, 25-hard soil layer C, 26-waterproof sealing ring, 27-waterproof cable hole position, 28-curing agent, 29-grouting pipe grouting hole, 30-hollow steel pipe and 31-common pipe pile II.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer and clearer, the present invention will be further described with reference to the accompanying drawings and examples.

A grouting hole 29 is reserved in the pile body of the novel tubular pile, and a one-way grout stop plug 6 is installed in the grouting hole 29; the fixing frame 20 is fixed on the pile top, and the hollow steel pipe 3 is fixed in the fixing sleeve 18 at the top of the fixing frame; a grouting hole 29 is reserved in the grouting pipe 3, and the tray 9 and the tray 16 are fixed on the grouting pipe 3; the upper rubber grout stopping plug 10 is fixed at the bottom of the tray 9, and the lower rubber grout stopping plug 15 is fixed at the top of the tray 16; the tray 11 is fixed at the bottom of the upper rubber grout stopping plug 10, and the tray 14 is fixed at the top of the lower rubber grout stopping plug 15; the electromagnet 8 is fixed at the top of the tray 9, and the electromagnet 17 is fixed at the bottom of the tray 16; the waterproof cable 12 is connected with the electromagnet 8, and the waterproof cable 13 is connected with the electromagnet 17. Wire holes 27 of waterproof cables are reserved in the trays, and waterproof sealing rings 26 are arranged in the wire holes 27 to prevent curing agents 28 from leaking from the wire holes 27 during grouting; after the power supply 4 is switched on, the

electromagnets

8 and 17 are electrified to generate magnetic force, the

electromagnets

8 and 17 attract the

trays

11 and 14 to move towards the

electromagnets

8 and 17, the rubber

grout stopping plugs

10 and 15 are extruded by the trays, so that the outer diameters of the rubber

grout stopping plugs

10 and 15 are increased, and gaps between the rubber

grout stopping plugs

10 and 15 and the inner wall of the tubular pile 21 are filled; after the grouting pump 1 is started, the curing agent 28 flows into the pipe pile from the grouting hole 29 of the grouting pipe, and the passage for the curing agent 28 to flow up and down is sealed by the rubber

grout stopping plugs

10 and 15, so that the curing agent 28 can only be pumped into the soil layer 24 from the grouting hole 7 of the pipe pile, the grouting operation is further completed, and the one-way grout stopping plug 6 in the grouting hole 7 can prevent the curing agent 28 from being poured into the pipe pile 21 from the soil layer; grout pump 1 and power 4 can be closed after the grout is accomplished, and the stopper 10 is only starched to rubber, 156 reconversion to grout pipe 3 can reciprocate, adjusts hollow steel pipe 30 total length this moment and can accurate location grout pipe 3 positions, thereby accurate removal grout pipe 3 is grout to next grout position.

As shown in fig. 1 to 4, this embodiment also discloses a novel grouting pipe pile, which mainly comprises the following steps:

step S1: and (3) carrying out pile pressing operation on the two

tubular piles

21 and 22, so that the novel tubular pile grouting hole 6 is in the depth range of the soft soil layer 24.

Step S2: erecting a fixing frame 20 on the top of the pile, overlapping the grouting pipe 3 and the hollow steel pipe 30 and placing the overlapped grouting pipe and the hollow steel pipe into the pipe pile 21, placing the tail end of the hollow steel pipe 30 into a fixing sleeve 18 and screwing a sleeve screw 19.

And step S3: the

waterproof cables

12 and 13 are connected with the

electromagnets

8 and 17, and the

waterproof cables

12 and 13 are buckled on the cable fixing buckle 5.

And step S4: the hollow steel pipes 30 are sequentially overlapped so that the grout holes 29 of the grout pipes are aligned with the predetermined grouting positions.

Step S5: and starting the power supply 4 and the grouting pump 1 to perform grouting operation.

Step S6: and after the soil layer grouting is finished, the power supply 4 and the grouting pump 1 are turned off, and the grouting pipe 3 is positioned to the next grouting position by adjusting the total length of the hollow steel pipe 30.

Step S7: and repeating the steps S4-S6 until all soil layers are grouted.

The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be equivalent replacement modes, and all are included in the scope of the present invention.

Claims

1. A novel grouting tubular pile comprises a novel tubular pile body and a grouting device and is characterized in that the novel tubular pile is a tubular pile with a pile body reserved with a grouting hole, and a one-way grout stop plug is installed in the grouting hole; the grouting pipe is a hollow steel pipe with a closed tail end, and a grouting hole is reserved in the grouting pipe; the grouting device includes: the device comprises a tray I, a tray II, a tray III, a tray IV, an electromagnet I, an electromagnet II, a waterproof cable I, a waterproof cable II, an upper rubber grout stop plug and a lower rubber grout stop plug; the tray I and the tray IV are fixed on the grouting pipe; the upper rubber grout stopping plug is fixed at the bottom of the tray I, and the lower rubber grout stopping plug is fixed at the top of the tray IV; the tray II is fixed at the bottom of the upper rubber grout stopping plug, and the tray III is fixed at the top of the lower rubber grout stopping plug; the electromagnet I is fixed at the top of the tray I, and the electromagnet II is fixed at the bottom of the tray IV; waterproof cable I connects electro-magnet I, and waterproof cable II connects electro-magnet II.

2. The novel grouting tubular pile of claim 1, wherein at least one group of grouting hole groups are arranged in each meter range of the novel tubular pile, the plane where the central axis of the grouting hole is located is perpendicular to the vertical central axis of the tubular pile, and at least 4 grouting holes are uniformly and symmetrically arranged along the pile body in each grouting hole group.

3. The novel grouting pipe pile according to claim 1, wherein two ends of the hollow steel pipe are connected by threads, each section of the hollow steel pipe is 3-5m in length, and the thickness of the pipe wall is 3mm.

4. A novel grouting pipe pile according to claim 1, characterized in that the head end of the grouting pipe is provided with an internal thread which can be connected with the external thread end of the hollow steel pipe, two uniform and symmetrical grouting holes are arranged at a distance of 40cm from the tail end, and the diameter of each grouting hole is 5mm.

5. The novel grouting pipe pile of claim 1, wherein the diameter of the tray is 5cm smaller than the inner wall of the pipe pile, the tray is made of low-carbon steel, and the tray and the grouting pipe are fixed by welding.

6. The novel grouting pipe pile of claim 1, wherein the tray I is fixed at a position 40cm above a grouting hole of the grouting pipe, and the tray IV is fixed at the tail end of the grouting pipe.

7. The novel grouting pipe pile of claim 1, wherein the rubber grout stopping plugs are smaller than the inner wall of the pipe pile by 3cm in diameter and at least 2cm in thickness.

8. The novel grouting pipe pile of claim 1, wherein wire holes for waterproof cables are reserved on the trays, and waterproof sealing rings are installed in the wire holes.

9. The novel grouting pipe pile of claim 1, wherein cable fixing buckles are arranged on the outer wall of the hollow steel pipe and the outer wall of the grouting pipe.