CN219387939U - Steel pipe sheet stratum reinforcing tubular pile structure with limit soil fixing capability - Google Patents

Abstract

The utility model provides a steel pipe sheet stratum reinforcing pipe pile structure with limit soil fixing capability, which comprises reinforcing pipe sheets, reinforcing pipes, telescopic pipes, grouting pipes and an anchoring assembly.

Description

Steel pipe sheet stratum reinforcing tubular pile structure with limit soil fixing capability

Technical Field

The utility model relates to the technical field of civil engineering tunnel shield construction equipment, in particular to a steel pipe sheet stratum reinforcing tubular pile structure with limit soil fixing capability.

Background

At present, along with the rapid development of traffic roads in China, various mountain expressways and urban subways are built, the tunnel construction process is mature, especially the shield method construction has the advantages of safety, rapidness, high mechanization degree and the like, but shield tunneling is used in an earth stratum, soil subsidence around a tunnel is often not well controlled, the tunnel construction has very high requirements on the settlement control of surrounding rock soil, in the prior art, when the tunnel section is in shield tunneling, if the surrounding soil subsidence deformation is too large, tunnel collapse and dislocation are easily caused, and serious potential safety hazards exist, so that a tunnel inner layer needs to be reinforced by using a shield segment.

The shield segment is a main assembly component for shield construction, is an innermost barrier of a tunnel, bears the functions of resisting soil layer pressure, underground water pressure and some special loads, is a permanent lining structure of the shield tunnel, directly relates to the integral quality and safety of the tunnel, influences the waterproof performance and durability of the tunnel, and generally uses reinforcing piles to reinforce and connect the segment with the soil layer in the tunnel, so that the use effect of the segment can be directly influenced by the fixing effect of the reinforcing piles.

The utility model provides a miniature reinforced pile of shield tunnel concrete pipe piece that publication number is CN114922661A, it is through setting up the slip casting pipe, and three slip casting pipe is followed three position and is annotated the thick liquid, and the thick liquid is got up the loose earth parcel that the shield constructs the residue between section of jurisdiction and the country rock soil, and the caking is fixed with section of jurisdiction outer wall and country rock soil, forms firm caking, but still exists following not enough: 1. the length of the whole reinforcement pile is fixed, so that the soil layer within a certain distance can be reinforced, and the adjustment can not be carried out according to the distance between the soil layer and the reinforcement pile; 2. although the device can perform grouting, the grouting position cannot be completely wrapped around the reinforcing pile, and a complete whole is difficult to form.

Disclosure of Invention

The utility model aims to provide a steel pipe sheet stratum reinforcing tubular pile structure with the capacity of limiting soil fixation so as to solve the problems in the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

a steel-pipe sheet stratum reinforcing tubular pile structure with spacing soil fixing capability, comprising:

the reinforcing duct piece is annular, and a fixing frame is fixed in the middle of the reinforcing duct piece;

the reinforcing pipe penetrates through and is fixed on the fixing frame, one end of the reinforcing pipe is sealed, the inside of the reinforcing pipe is hollow, and an external grouting hole and a movement groove which are communicated with the outside are formed in the surface of the reinforcing pipe;

the telescopic pipe is hollow and sleeved in the reinforcing pipe, and an inner grouting hole and a grouting groove which are communicated with the outer grouting hole are formed in the surface of the telescopic pipe;

the grouting pipe is sealed at one end of the opening and the other end of the grouting pipe, is sleeved in the telescopic pipe, is provided with external threads on the outer side surface of the opening end, and sequentially penetrates through the telescopic pipe and the reinforcing pipe to be provided with an adjusting nut, and the surface of the grouting pipe is provided with a grouting hole communicated with the inside of the telescopic pipe;

the anchoring assembly is at least symmetrically provided with two groups and comprises an extension rod, one end of the extension rod is fixed on the outer side face of the grouting pipe, the other end of the extension rod penetrates through the grouting groove and the movement groove and then is fixed with a toothed plate, the surface of the reinforcing pipe is provided with a rotating frame, and a gear is arranged on the rotating frame and is in meshed connection with the toothed plate;

one end of the telescopic pipe is conical and extends outwards from the opening end of the reinforcing pipe, at least one screw rod is fixed at the other end of the telescopic pipe, a telescopic nut is arranged after the other end of the screw rod penetrates through the reinforcing pipe, and the grouting groove is positioned at the inner sides of the external grouting hole and the movement groove;

an anchoring claw is fixed on the gear and faces towards the opening end of the reinforcing pipe.

In one embodiment, the fixing frame is in a crisscross structure, and the reinforcing pipe is fixed at the center of the fixing frame.

In one embodiment, the surface of the fixing frame is fixed with a crisscrossed reinforcing frame through bolts, and the reinforcing pipe penetrates through the reinforcing frame.

In one embodiment, the grouting holes, the inner grouting holes and the grouting grooves are arranged in a crisscross manner, and the inner grouting holes are positioned on the outer sides of the grouting grooves close to the conical ends of the telescopic pipes.

In one embodiment, a limiting block is fixed on the toothed plate and used for limiting the movement displacement of the toothed plate.

In one embodiment, the inner surface and the outer surface of the reinforcing segment are both arc-shaped structures.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the utility model, the telescopic pipe can be driven to perform telescopic movement in the reinforcing pipe through the cooperation of the telescopic nut and the screw rod, so that the two-stage pipe piles of the telescopic pipe and the reinforcing pipe are pushed in, the length of the whole reinforcing pipe pile is adjusted, the soil layer reinforcement of different distances can be adapted, and the applicability is strong;

2. according to the utility model, cement paste can be injected into the grouting pipe, the cement paste penetrates into the reinforcing pipe, the telescopic pipe and the grouting pipe and permeates into the soil layer along the outer grouting holes, so that the whole reinforcing pipe pile and surrounding soil particles are consolidated into a whole, the mechanical property of soil around a tunnel can be effectively improved, the bearing capacity of load is improved, the integrity of lining and soil is greatly increased, the stress range of the reinforcing pipe pile main body is enlarged, and excessive settlement deformation is effectively avoided.

Drawings

FIG. 1 is a schematic diagram of the overall exploded construction of the present utility model;

FIG. 2 is a schematic view showing an exploded structure of a reinforcing pipe, a telescopic pipe and a grouting pipe according to the present utility model;

FIG. 3 is a schematic view of the structure of the anchor assembly of the present utility model;

FIG. 4 is a schematic view showing a connecting cross-sectional structure of a reinforcing pipe, a telescopic pipe and a grouting pipe according to the present utility model;

FIG. 5 is a schematic view showing the overall structure of the reinforcing pipe, the telescopic pipe and the grouting pipe according to the present utility model;

fig. 6 is a schematic diagram of the overall structure of the present utility model.

In the figure: the device comprises a reinforcing pipe piece 10, a fixing frame 11, a bolt 12, a reinforcing frame 13, a reinforcing pipe 20, an external grouting hole 21, a movement groove 22, a telescopic pipe 30, an internal grouting hole 31, a grouting groove 32, a screw rod 33, a telescopic nut 34, a grouting pipe 40, a grouting hole 41, an adjusting nut 42, an anchoring component 50, an extending rod 51, a toothed plate 52, a rotating frame 53, a gear 54, an anchoring claw 55 and a limiting block 56.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Examples:

referring to fig. 1 to 6, the present utility model provides a technical solution:

the utility model provides a steel-pipe piece stratum reinforcing tubular pile structure that possesses spacing soil fixing ability, includes reinforcing segment 10, reinforcing pipe 20, flexible pipe 30, slip casting pipe 40 and anchor assembly 50, wherein:

the reinforcing pipe piece 10 is annular, the middle part is hollow, the inner side wall in the middle part is fixedly provided with a fixing frame 11, and the reinforcing pipe pile is fixed on the fixing frame 11, so that the whole reinforcing pipe piece 10 is fixed on the inner side wall of the shield tunnel.

Further, the fixing frame 11 is in a cross-shaped structure, the reinforcing pipe 20 is fixed at the center of the fixing frame 11, the cross-shaped reinforcing frame 13 is fixed on the surface of the fixing frame 11 through the bolts 12, the reinforcing pipe 20 penetrates through the reinforcing frame 13, and the reinforcing frame 13 enhances the strength of the fixing frame 11.

Further, the inner surface and the outer surface of the reinforcing duct piece 10 are both arc-shaped structures, and the arc-shaped surface structures are identical to the inner side wall of the shield tunnel in shape, so that the reinforcing duct piece 10 is tightly attached to the inner side wall of the tunnel.

The reinforcing pipe 20 penetrates through and is fixed on the fixing frame 11, one end of the reinforcing pipe 20 is open, one end of the reinforcing pipe is sealed, the reinforcing pipe is hollow, and an external grouting hole 21 and a movement groove 22 which are communicated with the outside are formed in the surface of the reinforcing pipe.

The telescopic pipe 30 is hollow inside and sleeved inside the reinforcing pipe 20 and can move back and forth in the reinforcing pipe 20, one end of the telescopic pipe 30 is conical and extends outwards from the opening end of the reinforcing pipe 20, at least one screw rod 33 is fixed to the other end of the telescopic pipe, the conical port can penetrate into the soil layer after penetrating through the reinforcing pipe 20, a telescopic nut 34 is installed at the other end of the screw rod 33, the screw rod 33 is provided with external threads, the telescopic nut 34 is provided with internal threads, the telescopic nut 34 is connected with the screw rod 33 through threads, the telescopic nut 34 abuts against the outer side wall of the sealing end of the reinforcing pipe 20, the screw rod 33 can be driven to move by screwing the telescopic nut 34, so that the movement of the telescopic pipe 30 is realized, the pushing of the telescopic pipe 30 and the reinforcing pipe 20 is realized, the length of the whole reinforcing pipe pile is adjusted, the soil layer with different distances can be adapted, and the applicability is strong.

The inner grouting holes 31 and grouting grooves 32 communicated with the outer grouting holes 21 are formed in the surface of the telescopic pipe 30, the grouting grooves 32 are located on the inner sides of the outer grouting holes 21 and the moving grooves 22, after grouting is conducted inside the telescopic pipe 30, cement slurry can enter the outer grouting holes 21 through the inner grouting holes 31 and the grouting grooves 32 and then infiltrate into a soil layer, the whole reinforced pipe pile and surrounding soil particles are glued to form a whole, the mechanical property of soil surrounding a tunnel can be effectively improved, the bearing capacity of load is improved, the integrity of lining and soil is greatly improved, the stress range of the reinforced pipe pile main body is enlarged, and accordingly excessive settlement deformation is effectively avoided.

Further, the inner grouting holes 31 are located at the outer side of the grouting groove 32, which is close to the conical end of the telescopic pipe 30, and cement paste inside the telescopic pipe 30 can be penetrated into the reinforced pipe pile and the soil layer through the inner grouting holes 31, so that grouting effect is improved.

The grouting pipe 40 one end opening other end is sealed, the sleeve is inside the flexible pipe 30, the lateral surface of open end is provided with the external screw thread to install adjusting nut 42 after running through flexible pipe 30, reinforcement pipe 20 in proper order, grouting hole 41 with flexible pipe 30 inside intercommunication has been seted up on grouting pipe 40 surface, adjusting nut 42 has the internal screw thread, adjusting nut 42 and grouting pipe 40 pass through threaded engagement and connect, twist adjusting nut 42, can drive grouting pipe 40 back-and-forth movement.

Further, the grouting holes 41, the inner grouting holes 31 and the grouting grooves 32 are arranged in a crisscross manner, so that cement slurry can flow between the telescopic pipe 30 and the grouting pipe 40 during grouting.

The anchoring assembly 50 is at least symmetrically provided with two groups, and comprises an extension rod 51, one end of the extension rod 51 is fixed on the outer side surface of the grouting pipe 40, the other end of the extension rod is fixed with a toothed plate 52 after passing through the grouting groove 32 and the movement groove 22, and when the grouting pipe 31 moves towards the conical end of the telescopic pipe 30, the extension rod 51 moves in the movement groove 22 and the grouting groove 32 to drive the toothed plate 52 to move forwards.

The reinforcing pipe 20 surface is provided with the rotating frame 53, installs the gear 54 on the rotating frame 53, and the gear 54 can rotate around the rotating frame 53, and gear 54 and pinion rack 52 meshing are connected, be fixed with anchor claw 55 on the gear 54, anchor claw 55 is towards the open end of reinforcing pipe 20, and pinion rack 52 when the forward motion, drive gear 54 and rotate, and corresponding anchor claw 55 opens, can enlarge the bearing area of pile tip, improves the bearing capacity of reinforcing pipe pile, and the effect of similar anchor nail, this structure greatly increased the anchor effect of reinforcing pipe pile, improved the bearing capacity of soil layer, avoided the excessive settlement deformation in the shield tunneling process effectively.

Further, a limiting block 56 is fixed on the toothed plate 52, and is used for limiting the movement displacement of the toothed plate 52, when the toothed plate 52 moves forward, the gear 54 touches the toothed plate 52, so that the toothed plate cannot move, and the opening angle of the anchoring claw 55 is limited.

Alternatively, the number of the anchoring assemblies 50 may be set according to the requirement, and in order to ensure the stress balance, the respective anchoring assemblies 50 are symmetrically arranged, and the number and positions of the moving grooves 22 and the grouting grooves 32 are matched with those of the anchoring assemblies 50.

The application principle of the utility model is as follows: the telescopic nut 34 is screwed, the telescopic pipe 30 is driven to move in the reinforced pipe 10 by the screw 33, and the length of the whole reinforced pipe pile is adjusted to be suitable for soil layers with different distances;

according to the reserved holes for inserting the reinforcing pipe piles, the whole reinforcing pipe piles are inserted into the reserved holes, the reinforcing pipe pieces 10 are propped against the inner wall of a shield tunnel, then the adjusting nuts 42 are screwed to enable the grouting pipe 31 to move towards the conical end of the telescopic pipe 30, the extension rods 51 move in the moving grooves 22 and the grouting grooves 32 to drive the toothed plate 52 to move forwards, the gears 54 rotate, the corresponding anchoring claws 55 are opened, and the soil is anchored in the soil layer;

cement slurry is injected into the grouting pipe 40, the cement slurry flows into the telescopic pipe 30 through the grouting holes 41, the cement slurry in the telescopic pipe 30 flows into the outer grouting holes 21 through the inner grouting holes 31 and the grouting grooves 32 and finally permeates into a soil layer, so that the whole reinforced pipe pile and surrounding soil particles are cemented to form a whole, the mechanical property of soil around a tunnel is effectively improved, the bearing capacity is improved, and the reinforced pipe piece 10 is fixed on the inner wall of the shield tunnel.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The utility model provides a steel-pipe piece stratum reinforcing tubular pile structure that possesses spacing soil-fixing ability which characterized in that includes:

the reinforcing duct piece (10), wherein the reinforcing duct piece (10) is annular, and a fixing frame (11) is fixed in the middle of the reinforcing duct piece;

the reinforcing pipe (20) penetrates through and is fixed on the fixing frame (11), one end of the reinforcing pipe (20) is open, the other end of the reinforcing pipe is sealed, the inside of the reinforcing pipe is hollow, and an external grouting hole (21) and a movement groove (22) which are communicated with the outside are formed in the surface of the reinforcing pipe;

the telescopic pipe (30) is hollow in the telescopic pipe (30) and sleeved in the reinforcing pipe (20), and an inner grouting hole (31) and a grouting groove (32) which are communicated with the outer grouting hole (21) are formed in the surface of the telescopic pipe (30);

the grouting device comprises a grouting pipe (40), wherein an opening at one end of the grouting pipe (40) is sealed at the other end, the grouting pipe is sleeved inside a telescopic pipe (30), external threads are arranged on the outer side surface of the opening end, an adjusting nut (42) is arranged after the grouting pipe (40) and a reinforcing pipe (20) are sequentially penetrated through, and a grouting hole (41) communicated with the inside of the telescopic pipe (30) is formed in the surface of the grouting pipe (40);

the anchoring assembly (50) is at least symmetrically provided with two groups of anchoring assemblies, each anchoring assembly comprises an extension rod (51), one end of each extension rod (51) is fixed on the outer side face of the grouting pipe (40), the other end of each extension rod penetrates through the grouting groove (32) and the movement groove (22) and then is fixedly provided with a toothed plate (52), a rotating frame (53) is arranged on the surface of the reinforcing pipe (20), a gear (54) is arranged on each rotating frame (53), and the gears (54) are connected with the toothed plates (52) in a meshed mode;

one end of the telescopic pipe (30) is conical and extends outwards from the opening end of the reinforcing pipe (20), at least one screw rod (33) is fixed at the other end of the telescopic pipe, a telescopic nut (34) is arranged after the other end of the screw rod (33) penetrates through the reinforcing pipe (20), and the grouting groove (32) is positioned at the inner sides of the external grouting hole (21) and the movement groove (22);

an anchoring claw (55) is fixed on the gear (54), and the anchoring claw (55) faces to the opening end of the reinforcement pipe (20).

2. The steel pipe sheet stratum reinforcing pipe pile structure with limit soil fixing capability according to claim 1, wherein: the fixing frame (11) is of a crisscross structure, and the reinforcing pipe (20) is fixed at the center of the fixing frame (11).

3. The steel pipe sheet stratum reinforcing pipe pile structure with limit soil fixing capability according to claim 2, wherein: the surface of the fixing frame (11) is fixed with a crisscross reinforcement frame (13) through bolts (12), and the reinforcement pipe (20) penetrates through the reinforcement frame (13).

4. The steel pipe sheet stratum reinforcing pipe pile structure with limit soil fixing capability according to claim 1, wherein: the grouting holes (41), the inner grouting holes (31) and the grouting grooves (32) are arranged in a crisscross manner, and the inner grouting holes (31) are positioned on the outer side of the grouting grooves (32) close to the conical end of the telescopic pipe (30).

5. The steel pipe sheet stratum reinforcing pipe pile structure with limit soil fixing capability according to claim 1, wherein: and a limiting block (56) is fixed on the toothed plate (52) and is used for limiting the movement displacement of the toothed plate (52).

6. The steel pipe sheet stratum reinforcing pipe pile structure with limit soil fixing capability according to any one of claims 1 to 5, wherein: the inner surface and the outer surface of the reinforcing duct piece (10) are of arc structures.