Composite sleeve lining reinforced tunnel disease structure and construction method

Abstract

The invention relates to a composite sleeve lining reinforced tunnel disease structure and a construction method, a feet-lock bolt guide construction technology is adopted, the inclination angle of a drill rod is adjusted through a feet-lock bolt guide device, a feet-lock bolt is constructed through drilling of the drill rod, and the construction quality and the construction efficiency of the feet-lock bolt are improved; a shaped reinforcement cage built-in profile steel sleeve lining reinforcing technology is adopted, and the reinforcement cage for reinforcing the sleeve lining is reinforced by built-in profile steel and is welded with an anchor rod, so that the supporting capacity and stability of the secondary lining of the existing tunnel are enhanced; the steel frame beams are arranged on the upper portions of the grouting steel pipes, the grouting steel pipes are inserted into the sleeves on the lower portions of the steel cross beams to be welded and fixed, the steel frame beams form a whole, the efficiency and quality of tunnel construction are improved, and the supporting capacity and stability of a tunnel are remarkably enhanced.

Description

Technical Field

[0001] The invention belongs to the field of tunnel reinforcement, and in particular relates to a composite casing lining reinforcement tunnel defect structure and a construction method. Background Art

[0002] With the acceleration of urbanization, tunnels, as an important part of urban transportation construction, play an increasingly important role. However, due to the complexity of geological conditions, differences in construction quality and various loads during operation, tunnel structures often suffer from various diseases, such as lining cracks, water leakage, deformation and other problems. These problems not only affect the normal use of tunnels, but also pose a serious threat to the safety and durability of tunnels.

[0003] In summary, in order to effectively solve the tunnel disease problem and improve the bearing capacity and stability of the tunnel, it is very important to seek a composite casing lining reinforced tunnel disease structure with fast construction speed, simple operation, reliable construction quality, and the ability to improve the overall performance of the tunnel and extend its service life. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a composite casing lining reinforced tunnel defect structure and a construction method.

[0005] The construction method of the composite casing lining reinforcement tunnel disease structure comprises the following steps:

[0006] Step 1: Remove the electromechanical equipment, interior decoration, water ditches, cable trenches and original road surface structure in the tunnel;

[0007] Step 2: Construction of locking anchor rod: adjusting the inclination angle of the drill rod by the locking anchor rod guide device, and constructing the locking anchor rod by drilling holes with the drill rod;

[0008] Step 3: Construction of reinforced lining: Anchor rods are set in a ring on the secondary lining of the existing tunnel, and a steel cage is set on the inner side of the secondary lining of the existing tunnel, welded to the anchor rods, and then the reinforced lining is cast;

[0009] Step 4: Grouting reinforcement of the inverted arch: grouting steel pipes are installed at intervals, grouting is performed at the lower part of the inverted arch to form a reinforcement body, and a steel frame beam is arranged on the upper part of the grouting steel pipes;

[0010] Step 5: Construct new cable trenches and drainage ditches.

[0011] Preferably, in step 2, the locking foot anchor rod guiding device includes a square steel bracket, a steel plate, a drilling rig, a slide groove, an ear plate, a U-shaped reserved hole, a guide tube, a fixed screw, a slide rod, a guide rail and a drill rod; a steel plate is arranged on the upper part of the square steel bracket, wherein the steel plate is provided with a U-shaped reserved hole and a slide groove; an ear plate is arranged on the lower part of the drilling rig, and the ear plate is fixed to the steel plate by a fixed screw, wherein the drilling rig moves along the slide groove on the surface of the steel plate along the drill hole.

[0012] Preferably, in step 2, the guide rail is welded in the vertical direction of one end of the drilled hole of the square steel bracket, wherein a slide groove is arranged on the guide rail; a guide tube with a certain inclination angle is arranged on the slide rod; the slide rod moves up and down along the guide rail, wherein a fixed screw passes through the slide groove to fix the slide rod on the guide rail; the drill rod passes through the guide tube to drill a locking foot anchor hole; a plurality of locking foot anchor guide devices are arranged along the tunnel.

[0013] Preferably, in step three, the steel cage of the reinforcement sleeve is reinforced with built-in steel, the built-in steel is annular, anchor rods are arranged in a ring on the secondary lining of the existing tunnel, and the built-in steel is welded to the anchor rods; the bottom of the steel cage is fixed by welding the built-in steel to the locking anchor rods; after the steel cage of the reinforcement sleeve is fixed, a standardized steel formwork is installed, and concrete is poured synchronously and symmetrically.

[0014] Preferably, in step four, a steel frame beam is arranged on the upper part of the grouting steel pipe; the steel frame beam comprises a steel longitudinal beam, a steel cross beam, an insertion end and a sleeve, wherein the steel longitudinal beam and the steel cross beam constitute a load-bearing frame, an insertion end is reserved at the end of the steel longitudinal beam, and a sleeve is arranged at the lower part of the steel cross beam corresponding to the grouting steel pipe; the height of the steel longitudinal beam is smaller than the steel cross beam, and the insertion end of the steel longitudinal beam is inserted into the flange of the steel cross beam and fixed by welding; the grouting steel pipe is inserted into the lower sleeve of the steel cross beam and fixed by welding, so that the steel frame beam forms a whole.

[0015] Preferably, step six is ​​implemented after step five, and step six specifically comprises welding the steel frame beam to the pavement reinforcement cage, and performing tunnel pavement concrete pouring and interior decoration construction.

[0016] The construction method of composite lining reinforcement tunnel disease structure is obtained by any of the above methods.

[0017] The beneficial effects of the present invention are:

[0018] 1) The present invention adopts the locking foot anchor rod guiding construction technology, adjusts the inclination angle of the drill rod through the locking foot anchor rod guiding device, and constructs the locking foot anchor rod by drilling holes with the drill rod, thereby improving the construction quality and construction efficiency of the locking foot anchor rod.

[0019] 2) The present invention adopts standardized steel cage built-in steel lining reinforcement technology. The steel cage of the reinforced lining is reinforced with built-in steel and welded with anchor rods, thereby enhancing the supporting capacity and stability of the secondary lining of the existing tunnel.

[0020] 3) The present invention adopts the combined reinforcement technology of tunnel bottom grouting and steel frame beam reinforcement lining. A steel frame beam is arranged on the upper part of the grouting steel pipe. The grouting steel pipe is inserted into the lower sleeve of the steel cross beam and welded and fixed, so that the steel frame beam forms a whole. This not only improves the efficiency and quality of tunnel construction, but also significantly enhances the supporting capacity and stability of the tunnel, providing a strong guarantee for the safe operation of the tunnel. It can achieve good technical, economic and social benefits when applied to actual projects. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the cross section of the diseased structure of the composite casing lining reinforcement tunnel;

[0022] Figure 2 It is a schematic diagram of the cross section of the reinforcement sleeve;

[0023] Figure 3 It is a plan view of the steel frame beam;

[0024] Figure 4 It is a schematic diagram of the steel frame beam unit structure;

[0025] Figure 5 It is a schematic diagram of the assembly of steel frame beams and the fixing sleeve of grouting steel pipes;

[0026] Figure 6 This is a schematic diagram of the large-scale locking foot anchor rod guide device.

[0027] Explanation of the accompanying drawings: 1-existing tunnel secondary lining, 2-anchor rod, 3-reinforcement sleeve lining, 4-tunnel center line, 5-new cable trench, 6-new drainage ditch, 7-new pavement structure, 8-steel frame beam, 9-inverted arch, 10-locking anchor rod, 11-reinforcement body, 12-grouting steel pipe, 13-internal steel section, 14-rebar cage, 15-steel longitudinal beam, 16-steel cross beam, 17-insertion end, 18-sleeve, 19-square steel bracket, 20-steel plate, 21-drilling rig, 22-slide groove, 23-ear plate, 24-U-shaped reserved hole, 25-guide tube, 26-fixing screw, 27-slide rod, 28-guide rail, 29-drill rod. DETAILED DESCRIPTION

[0028] The present invention is further described below in conjunction with embodiments. The description of the following embodiments is only used to help understand the present invention. It should be noted that for ordinary persons in the art, without departing from the principle of the present invention, the present invention can also be modified in some ways, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

[0029] Embodiment 1

[0030] As an embodiment, the construction method of the composite casing lining reinforcement tunnel disease structure has the following main construction steps:

[0031] Step 1: Dismantle the mechanical and electrical equipment and interior decoration.

[0032] Step 2: Remove the water ditch, cable trench and original road surface structure.

[0033] Step 3: Construction of locking foot anchor rods: multiple locking foot anchor rod 10 guide devices are arranged along the tunnel, and the drill rod 29 passes through the guide tube 25 to drill the locking foot anchor rod 10 holes.

[0034] Step 4: Reinforcement lining construction:

[0035] like Figure 1 and Figure 2 As shown, a reinforcement sleeve 3 is constructed on the inner side of the secondary lining 1 of the existing tunnel; the steel cage 14 of the reinforcement sleeve 3 is reinforced by an internal steel section 13, and the internal steel section 13 is annular and welded to the anchor rod 2, wherein the anchor rod 2 is arranged in a ring on the secondary lining 1 of the existing tunnel; the bottom of the steel cage 14 is welded and fixed to the locking anchor rod 10 by the internal steel section 13; after the steel cage 14 of the reinforcement sleeve 3 is fixed, a standardized steel formwork is installed, and concrete is poured synchronously and symmetrically.

[0036] Step 5: Invert filling grouting reinforcement:

[0037] After the original road surface structure, cable trench and drainage ditch on the upper part of the inverted arch 9 are broken, grouting steel pipes 12 are evenly spaced, and grouting is performed by a high-pressure grouting machine to form a reinforcement body 11 at the lower part of the inverted arch 9 to improve the bearing capacity of the inverted arch 9;

[0038] Step 6: Construction of new cable trench and water trench:

[0039] After the construction of the steel frame beam 8 is completed, the construction of the new cable trench 5 and the new drainage trench 6 is carried out;

[0040] Step 7: Pavement and interior construction:

[0041] The tunnel pavement concrete pouring and interior decoration construction are carried out, and the steel frame beam 8 is welded to the pavement reinforcement cage.

[0042] Embodiment 2

[0043] As another embodiment, this embodiment 2 proposes, based on the embodiment 1, in the construction method of the composite casing lining reinforced tunnel disease structure:

[0044] like Figure 6As shown, in step three, the guide device of the locking foot anchor rod 10 is composed of a square steel bracket 19, a steel plate 20, a drilling rig 21, a slide 22, an ear plate 23, a U-shaped reserved hole 24, a guide tube 25, a fixing screw 26, a slide rod 27, a guide rail 28, a drill rod 29, etc.; a steel plate 20 is arranged on the upper part of the square steel bracket 19, wherein the steel plate 20 is provided with a U-shaped reserved hole 24 and a slide 22; an ear plate 23 is arranged on the lower part of the drilling rig 21, and is fixed to the steel plate 20 by a fixing screw 26, wherein the drilling rig 21 can move along the slide 22 according to the drilling needs; The guide rail 28 is welded to the middle position of a drilling section of the square steel bracket 19, wherein a slide groove 22 is arranged on the guide rail 28; a guide tube 25 with a certain inclination angle is arranged on the slide rod 27, wherein the guide tube 25 is cut and processed by a steel tube; the slide rod 27 can move up and down in the guide rail 28, wherein a fixed screw 26 passes through the slide groove 22 to fix the slide rod 27 on the guide rail 28; the drill rod 29 passes through the guide tube 25 to drill a hole for the locking foot anchor rod 10; a plurality of the guide devices for the locking foot anchor rod 10 can be arranged along the tunnel, thereby improving the drilling efficiency of the locking foot anchor rod 10.

[0045] like Figure 1 and Figure 5 As shown, in step five, a steel frame beam 8 is arranged on the upper part of the grouting steel pipe 12; the steel frame beam 8 adopts a unit assembly structure, and is composed of a steel longitudinal beam 15, a steel cross beam 16, an insertion end 17, a sleeve 18, etc., wherein the steel longitudinal beam 15 and the steel cross beam 16 are made by H-shaped processing to form a force-bearing frame, an insertion end 17 is reserved at the end of the steel longitudinal beam 15, and a sleeve 18 is arranged at the lower part of the steel cross beam 16 at a position corresponding to the grouting steel pipe 12; the height of the steel longitudinal beam 15 is less than that of the steel cross beam 16, and the insertion end 17 of the steel longitudinal beam 15 can be inserted into the flange of the steel cross beam 16 and welded and fixed; the grouting steel pipe 12 is inserted into the lower sleeve 18 of the steel cross beam 16 and welded and fixed, so that the steel frame beam 8 forms a whole.

[0046] It should be noted that the parts in this embodiment that are the same or similar to those in the first embodiment can be referenced to each other and will not be described in detail in this application.

[0047] Embodiment 3

[0048] As another embodiment, this embodiment 3 is proposed on the basis of the embodiment 2, the composite casing reinforced tunnel defect structure obtained by this method is as follows: Figure 1 and Figure 5 As shown:

[0049] Locking anchor rods 10 are constructed on both sides of the tunnel bottom, anchor rods 2 are arranged in a ring on the secondary lining 1 of the existing tunnel, and a reinforcement sleeve lining 3 is cast on the inner side of the secondary lining 1 of the existing tunnel.

[0050] Grouting steel pipes 12 are drilled at intervals at the inverted arch, and the lower part of the inverted arch 9 is grouted to form a reinforcement body 11. A steel frame beam 8 is arranged on the upper part of the grouting steel pipe 12, and the newly built pavement structure 7 is arranged on the steel frame beam 8. A newly built cable trench 5 and a newly built drainage trench 6 are arranged on both sides of the newly built pavement structure 7.

[0051] A steel frame beam 8 is arranged on the upper part of the grouting steel pipe 12; the steel frame beam 8 includes a steel longitudinal beam 15, a steel cross beam 16, an insertion end 17 and a sleeve 18, wherein the steel longitudinal beam 15 and the steel cross beam 16 form a load-bearing frame, an insertion end 17 is reserved at the end of the steel longitudinal beam 15, and a sleeve 18 is arranged at the lower part of the steel cross beam 16 at a position corresponding to the grouting steel pipe 12; the height of the steel longitudinal beam 15 is smaller than that of the steel cross beam 16, and the insertion end 17 of the steel longitudinal beam 15 is inserted into the flange of the steel cross beam 16 and is welded and fixed; the grouting steel pipe 12 is inserted into the lower sleeve 18 of the steel cross beam 16 and is welded and fixed, so that the steel frame beam 8 forms a whole.

[0052] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

Claims

1. A construction method for composite lining reinforcement of tunnel disease structure, characterized in that: The following steps are involved: Step 1: Remove the electromechanical equipment, interior decoration, water ditches, cable trenches and original road surface structure in the tunnel; Step 2: Construction of locking anchor rod: adjusting the inclination angle of the drill rod by the locking anchor rod guide device, and constructing the locking anchor rod by drilling holes with the drill rod; Step 3: Construction of reinforced lining: Anchor rods are set in a ring on the secondary lining of the existing tunnel, and a steel cage is set on the inner side of the secondary lining of the existing tunnel, welded to the anchor rods, and then the reinforced lining is cast; Step 4: Grouting reinforcement of the inverted arch: grouting steel pipes are installed at intervals, grouting is performed at the lower part of the inverted arch to form a reinforcement body, and a steel frame beam is arranged on the upper part of the grouting steel pipes; Step 5: Construct new cable trenches and drainage ditches.

2. The construction method of composite lining reinforcement tunnel defect structure according to claim 1 is characterized in that: In step two, the locking foot anchor rod guiding device includes a square steel bracket, a steel plate, a drilling rig, a slide groove, an ear plate, a U-shaped reserved hole, a guide tube, a fixing screw, a slide rod, a guide rail and a drill rod; a steel plate is arranged on the upper part of the square steel bracket, wherein the steel plate is provided with a U-shaped reserved hole and a slide groove; an ear plate is arranged on the lower part of the drilling rig, and the ear plate is fixed to the steel plate by a fixing screw, wherein the drilling rig moves along the slide groove on the surface of the steel plate along the drill hole.

3. The construction method of composite lining reinforcement tunnel defect structure according to claim 2 is characterized in that: In step two, the guide rail is welded in the vertical direction of one end of the drilled hole of the square steel bracket, wherein a slide groove is arranged on the guide rail; a guide tube with a certain inclination angle is arranged on the slide rod; the slide rod moves up and down along the guide rail, wherein a fixed screw passes through the slide groove to fix the slide rod on the guide rail; the drill rod passes through the guide tube to drill a locking foot anchor hole; a plurality of locking foot anchor guide devices are arranged along the tunnel.

4. The construction method of composite lining reinforcement tunnel defect structure according to claim 1 is characterized in that: In step three, the steel cage of the reinforcement lining is reinforced with built-in steel, which is annular. Anchor rods are arranged in a ring on the secondary lining of the existing tunnel, and the built-in steel is welded to the anchor rods. The bottom of the steel cage is fixed by welding the built-in steel and the locking anchor rods. After the steel cage of the reinforcement lining is fixed, a standardized steel formwork is installed, and concrete is poured synchronously and symmetrically.

5. The construction method of composite lining reinforcement tunnel defect structure according to claim 1 is characterized in that: In step four, a steel frame beam is arranged on the upper part of the grouting steel pipe; the steel frame beam includes a steel longitudinal beam, a steel cross beam, an insertion end and a sleeve, wherein the steel longitudinal beam and the steel cross beam constitute a load-bearing frame, an insertion end is reserved at the end of the steel longitudinal beam, and a sleeve is arranged at the lower part of the steel cross beam corresponding to the grouting steel pipe; the height of the steel longitudinal beam is smaller than the steel cross beam, and the insertion end of the steel longitudinal beam is inserted into the flange of the steel cross beam and welded and fixed; the grouting steel pipe is inserted into the lower sleeve of the steel cross beam and welded and fixed, so that the steel frame beam forms a whole.

6. The construction method of composite lining reinforcement tunnel defect structure according to claim 1 is characterized in that: After step five, step six is ​​implemented. Specifically, step six comprises welding the steel frame beam to the road surface reinforcement cage, and performing tunnel road surface concrete pouring and interior decoration construction.

7. A construction method for reinforcing a tunnel defect structure with a composite casing, characterized in that: Obtained by the method according to any one of claims 1 to 6.

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