CN107152026A - The mud jacking pipe support and its distribution method of a kind of steel-pipe pile - Google Patents

Abstract

The invention discloses a grouting pipe rack for steel pipe piles, and relates to the field of bridge engineering construction. The grouting pipe rack includes a plurality of connected grouting pipe rack segments, and each grouting pipe rack segment includes a There are several grouting pipes on the frame body; a high-pressure hose is arranged between the grouting pipes of two adjacent grouting pipe frame segments, and the high-pressure hose connects the pressure points of the two grouting pipe frame segments. The grout pipe, and the frames of the two grout pipe frame segments are connected. The grouting pipe frame for steel pipe piles provided by the invention has the advantages of convenient installation and disassembly, high construction efficiency, saving manpower and material resources, and is safe and reliable.

Description

A grouting pipe frame for steel pipe piles and its laying method

technical field

The invention relates to the field of bridge engineering construction, in particular to a grouting pipe frame for steel pipe piles and a laying method thereof.

Background technique

With the development of bridge science and technology and the application of large-scale mechanical equipment in the construction process, steel pipe piles with longer pile lengths, larger pile diameters and shear rings are widely used in bridge structures as a load-bearing pile foundation. middle. In order to give full play to the role of the bearing layer at the tip of the steel pipe inclined pile, it is usually necessary to grout at the bottom of the pipe pile to improve the ultimate bearing capacity of the steel pipe pile.

For the layout of such large-scale steel pipe pile grouting pipe racks with long pile length, large pile diameter and shear force ring, the grouting pipe rack includes the frame body and multiple grouting pipes. For piles, it is necessary to lay out grouting pipe racks in sections in steel pipe piles. The segments of traditional grouting pipe racks are connected by full welding. The pipe is welded. This welding method not only makes the installation of the grouting pipe frame troublesome, time-consuming and laborious, but also requires the operator to enter the steel pipe pile to cut the grouting pipe frame when removing the grouting pipe frame. Great security risk.

Contents of the invention

In view of the defects existing in the prior art, the purpose of the present invention is to provide a grouting pipe frame for steel pipe piles, which is easy to install and disassemble, high in construction efficiency, saves manpower and material resources, and is safe and reliable.

For achieving above object, the technical scheme that the present invention takes is:

A grouting pipe frame for steel pipe piles, the grouting pipe frame includes a plurality of connected grouting pipe frame segments, each of the grouting pipe frame segments includes a frame body, and the frame body A number of grouting pipes are arranged on the top; a high-pressure hose is arranged between the grouting pipes of two adjacent grouting pipe frame segments, and the high-pressure hose communicates with the pressure of the two grouting pipe frame segments. The grout pipe, and the frames of the two grout pipe frame segments are connected.

On the basis of the above technical solution, the grouting pipe frame segment also includes a plurality of guide slides arranged in the same direction as the grouting pipe, the guide slides are arranged outside the frame body, and the guide slides have The curved surface fits the inner wall of the steel pipe pile, and the two ends of the guide slide are respectively connected to the two ends of the frame body.

On the basis of the above technical solution, the guide slide is U-shaped, and the guide slide also includes two arc-shaped curved sections, one end of which is connected to the curved surface, and the other end is connected to the frame .

On the basis of the above technical solution, a plurality of reinforcing ribs are provided between the inner side of the guide slide and the outer side of the frame body.

On the basis of the above technical solution, a round steel is provided between the high-pressure hose and the grouting pipe, and the round steel is connected to the grouting pipe.

On the basis of the above technical solution, a limiting steel bar is further provided between the grouting pipes of the two grouting pipe frame segments, and the limiting steel bar is arranged beside the high-pressure hose.

On the basis of the above technical solution, a connecting piece is provided at the junction of the two frames, and the connecting piece is welded to the side of the frame.

On the basis of the above technical scheme, the grouting pipes of the remaining adjacent grouting pipe frame segments are integrally formed, and the frame joints of the remaining adjacent grouting pipe frame segments are provided with connecting plates, and the connecting plates Bolts are used to connect the frame body.

The present invention also provides a method for laying the grouting pipe rack, which includes the following steps: prefabricating the grouting pipe rack segments, lowering the grouting pipe rack segments one by one in the steel pipe pile, and connecting two adjacent racks , and connect the grouting pipes of two adjacent segments of the grouting pipe rack located near the concrete surface with a high-pressure hose.

On the basis of the above technical scheme, a connecting piece is provided at the junction of two adjacent frames near the top of the concrete surface, and a connecting plate is provided at the junction of the remaining adjacent frames, and the connecting plate is bolted to connect the adjacent two frames. .

Compared with the prior art, the present invention has the advantages of:

(1) In the present invention, the grouting pipes of the two grouting pipe frame sections near the concrete surface are connected through high-pressure hoses. When disassembling, it is only necessary to apply an upward force to the grouting pipe frame section above the concrete , which can break the high-pressure hose connected between the two grouting pipe racks near the concrete surface, without manual cutting, high construction efficiency, saving manpower and material resources, and is safe and reliable.

(2) The grouting pipe frame of the present invention is also provided with a plurality of guide slides, which reduces the friction between the grouting pipe frame and the inner wall of the steel pipe pile, and facilitates the lowering of the grouting pipe frame.

(3) Limiting steel bars are also provided beside the high-pressure hose of the present invention, which can prevent the high-pressure hose from twisting and deforming, and avoid grout leakage.

Description of drawings

Fig. 1 is the front view of grouting pipe support near the concrete surface in the embodiment of the present invention;

Fig. 2 is the enlarged view of place A in Fig. 1;

Fig. 3 is a schematic diagram of a grouting pipe rack located above the concrete surface in an embodiment of the present invention;

Fig. 4 is a top view of the grouting pipe frame in the embodiment of the present invention.

In the figure: 1- grouting pipe frame section, 11- frame body, 12- grouting pipe, 13- guide slide, 131- curved surface, 132- bending section, 133- reinforcement rib, 2- high pressure hose, 3 -round steel, 4-limiting reinforcement, 5a-connector, 5b-connecting plate.

detailed description

The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

Referring to Fig. 1 and Fig. 2, an embodiment of the present invention provides a grouting pipe frame for steel pipe piles. The grouting pipe frame includes a plurality of connected grouting pipe frame segments 1, and each grouting pipe frame segment Each section 1 includes a frame body 11, on which a number of grouting pipes 12 are arranged, wherein a high-pressure hose 2 is arranged between the grouting pipes 12 of two adjacent grouting pipe frame sections 1, and the high-pressure soft The pipe 2 communicates with the grouting pipes 12 of the two grouting pipe frame segments 1 , and the frames 11 of the two grouting pipe frame segments 1 are connected.

A round steel 3 is arranged between the high-pressure hose 2 and the grouting pipe 12, and the round steel 3 is connected with the grouting pipe 12. A limiting steel bar 4 is also provided between the grouting pipes 12 of the two grouting pipe frame segments 1 , and the limiting steel bar 4 is arranged beside the high-pressure hose 2 . The limiting steel bar 4 is welded to the two grouting pipes 12, which can prevent the high-pressure hose 2 from twisting and deforming, and avoid grouting leakage.

A connecting piece 5 a is provided at the joint of the two grouting pipe frame segments 1 , and the connecting piece 5 a is welded to the side of the frame body 11 . In this embodiment, the connecting piece 5a is a steel pipe.

Referring to Fig. 3, the grouting pipes 12 of the remaining adjacent grouting pipe frame segments 1 are integrally formed, and the joints of the frame bodies 11 of the remaining adjacent grouting pipe frame segments 1 are provided with connecting plates 5b, connecting The plate 5b is bolted to the frame body 11 .

The grouting pipe frame segment 1 also includes a plurality of guide slides 13 arranged in the same direction as the grouting pipe 12. The guide slides 13 are arranged outside the frame body 11. The guide slides 13 have a curved surface 131 that fits the inner wall of the steel pipe pile. Two ends of the slide plate 13 are respectively connected to two ends of the frame body 11 .

The guide slide 13 is U-shaped, and the guide slide 13 also includes two arc-shaped curved sections 132 . One end of the curved section 132 is connected to the curved surface 131 , and the other end is connected to the frame body 11 . A plurality of reinforcement ribs 133 are provided between the inner side of the guide slide 13 and the outer side of the frame body 11 . The guide slide 13 reduces the friction between the grouting pipe frame and the inner wall of the steel pipe pile, and is convenient for lowering the grouting pipe frame.

Referring to Fig. 4, the frame body 11 is in the shape of a cuboid, and the frame body 11 is spliced by a plurality of channel steels. Guide slides 13 are provided at the four corners of the frame body 11, and the curved surface 131 is attached to the inner wall of the steel pipe pile.

The present invention also provides a grouting pipe frame laying method, including the following steps: prefabricating the grouting pipe frame segment 1, lowering the grouting pipe frame segment 1 section by section in the steel pipe pile, and connecting two adjacent frames body 11, and connect the grouting pipes 12 of two adjacent grouting pipe frame segments 1 located near the top of the concrete surface with a high-pressure hose 2.

In the laying method of the grouting pipe frame of the present embodiment, a connecting piece 5a is provided at the junction of the two frame bodies 11 of the two grouting pipe frame segments 1 near the top of the concrete, and the side of the connecting piece 5a and the frame body 11 Edge welding. A connecting plate 5b is provided at the junction of the other two frame bodies 11 of the adjacent grouting pipe frame segment 1 above the concrete, and the connecting plate 5b is bolted to connect the remaining two adjacent frame bodies 11 .

When it is necessary to disassemble the grouting pipe frame, a certain force is applied upward to the grouting pipe frame segment 1 located above the concrete. Since the limiting steel bar 4 and the high-pressure hose 2 can bear less action, the limiting steel bar 4 will be separated from the grouting pipes 12, and the high-pressure hose 2 is disconnected, so that the two grouting pipe frame segments 1 near the top of the concrete surface and the grouting pipe frame segment 1 in the concrete are disconnected, and then Decompose the disassembled multiple grouting pipe frame segments 1, and remove the connecting bolts between two adjacent frame bodies 11 section by section, thereby completing the multi-stage disassembly of the grouting pipe frame, and disassembled multiple individual The grouting pipe frame segment 1 is used in other steel pipe piles, and the grouting pipe frame is reused, saving resources and cost.

In the present invention, the grouting pipes of the two grouting pipe frame segments 1 located near the top of the concrete surface are connected through high-pressure hoses. When disassembling, only the grouting pipe frame segment 1 located above the concrete surface needs to be exerted an upward action It can break the high-pressure hose connected between the two grouting pipe racks near the top of the concrete surface without manual cutting. The construction efficiency is high, manpower and material resources are saved, and it is safe and reliable.

The present invention is not limited to the above-mentioned embodiments. For those of ordinary skill in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications are also considered protection of the present invention. within range. The content not described in detail in this specification belongs to the prior art known to those skilled in the art.

Claims (10)

1. the mud jacking pipe support of a kind of steel-pipe pile, it is characterised in that the mud jacking pipe support includes multiple connected mud jacking pipe support sections Section (1), each mud jacking pipe support section (1) includes a support body (11), and the support body (11) is provided with some madjack pipes (12)；A high-pressure hose (2), the high pressure are provided between the madjack pipe (12) of the adjacent mud jacking pipe support section (1) of two of which Flexible pipe (2) connects the madjack pipe (12) of two mud jacking pipe support sections (1), and the frame of two mud jacking pipe support sections (1) Body (11) is connected.

2. the mud jacking pipe support of steel-pipe pile as claimed in claim 1, it is characterised in that：The mud jacking pipe support section (1) is also wrapped Multiple blade fins (13) set in the same direction with the madjack pipe (12) are included, the blade fin (13) is located at the support body (11) Outside, the blade fin (13) has the curved surface (131) fitted with the steel-pipe pile inwall, the two of the blade fin (13) End connects the two ends of the support body (11) respectively.

3. the mud jacking pipe support of steel-pipe pile as claimed in claim 2, it is characterised in that：The blade fin (13) is U-shaped shape, The blade fin (13) also includes the bending section (132) of two arcs, described bending section (132) one end and the curved surface (131) it is connected, the other end is connected with the support body (11).

4. the mud jacking pipe support of steel-pipe pile as claimed in claim 3, it is characterised in that：Blade fin (13) inner side and frame Provided with multiple reinforcing floors (133) between on the outside of body (11).

5. the mud jacking pipe support of steel-pipe pile as claimed in claim 1, it is characterised in that：The high-pressure hose (2) and madjack pipe (12) round steel (3) is provided between, the round steel (3) is connected with madjack pipe (12).

6. the mud jacking pipe support of steel-pipe pile as claimed in claim 1, it is characterised in that：Two mud jacking pipe support sections (1) Madjack pipe (12) between be additionally provided with a limit steel bar (4), the limit steel bar (4) is other located at the high-pressure hose (2).

7. the mud jacking pipe support of steel-pipe pile as claimed in claim 1, it is characterised in that：Two support body (11) junctions are set There are a connection piece (5a), the side welding of the connector (5a) and support body (11).

8. the mud jacking pipe support of steel-pipe pile as claimed in claim 1, it is characterised in that：Remaining adjacent mud jacking pipe support section (1) madjack pipe (12) is formed in one, and support body (11) junction of remaining adjacent mud jacking pipe support section (1) is provided with connecting plate (5b), support body (11) described in connecting plate (5b) bolt connection.

9. the distribution method of mud jacking pipe support as described in any one of claim 1 to 8, it is characterised in that comprise the following steps：It is prefabricated Mud jacking pipe support section (1), transfers mud jacking pipe support section (1) section by section in steel-pipe pile, connects two adjacent support bodys (11), is used in combination High-pressure hose (2) connection is located at the madjack pipe of the two neighboring mud jacking pipe support section (1) near above concrete surface (12)。

10. the distribution method of mud jacking pipe support as claimed in claim 9, it is characterised in that：It will be located at attached above concrete surface Near two neighboring support body (11) junction sets connector (5a), and remaining adjacent support body (11) junction sets connecting plate (5b), the two neighboring support body of connecting plate (5b) bolt connection (11).