CN214616564U - Reinforcing and reinforcing device for existing railway tunnel lining defect treatment - Google Patents

Abstract

The utility model discloses a reinforcement reinforcing apparatus for existing railway tunnel lining defect renovation, it includes: the fiber composite material layer is fixed at the defect position of the tunnel lining and comprises a fiber layer, and a plurality of sectional materials which are sequentially connected are arranged in the fiber layer; and the high-strength mortar layers are respectively filled in the sectional materials. Reinforcing apparatus, through the complex of a plurality of section bars, fibrous layer, the mortar layer three kinds of materials that excel in to adjust the combination cross-section of a plurality of section bars, fibrous compound number of piles or the intensity of the mortar that excels in, make this reinforcing apparatus's comprehensive bearing capacity reach the bearing capacity that surpasss the shaped steel bow member that the tunnel was commonly used even.

Description

Reinforcing and reinforcing device for existing railway tunnel lining defect treatment

Technical Field

The utility model relates to a railway tunnel traffic engineering technical field, concretely relates to reinforcement reinforcing apparatus for existing railway tunnel lining defect renovation.

Background

The importance and irreplaceability of tunnels in traffic engineering such as railways, highways and the like are determined by the special building structure form of the tunnels. As far as 2020, China railway mileage reaches 14.5 km, wherein 16798 railway tunnels are put into operation, the total length is about 19630km, 209 railway tunnels (the length is more than 10 km), and the total length is 2811 km. However, most tunnel linings are damaged to different degrees due to unavoidable geological and environmental conditions, design and construction technical limitations in the construction process, and incremental and excessive influences of later-stage operation. These diseases mainly include: cavities at the back of the lining, insufficient lining thickness, cracking of the lining, slab staggering, deformation, water leakage of the lining, corrosion of the lining, freezing damage and the like. If the diseases are not effectively treated, once an accident occurs, the driving is disturbed to influence the normal running of the train, and if the accident occurs, the lining falls off to smash the middle train to influence the operation safety. Therefore, in order to ensure the normal operation of the railway tunnel, the development of the disease control research aiming at the lining defect of the existing railway tunnel is not slow enough.

The treatment of the railway tunnel lining defects has timeliness. If the treatment occurs in the line without check or before the vehicle is not communicated, the machine tool and the personnel can easily arrive at the site, the construction time is not limited, the difficulty of implementing the disease treatment is small, and the treatment method is more; however, if the railway line becomes an existing line after passing through the inspection vehicle, the existing line damage control construction is performed according to the prescribed procedures and safety requirements in order to ensure safety. Tunnel construction needs to be carried out in skylight points, so that constructors and large-scale machines are difficult to or cannot reach the site due to the limitation of time and space. In general, before existing line tunnel lining defect treatment construction, a contact net is grounded, and before opening, a grounding wire is detached. The construction needs to set up an operation platform, and the operation platform can be set up on site or can be set up in a skylight point of a rail car in advance to reach the site. The site building platform needs to be built after a contact network is grounded, the platform needs to be dismantled in advance before construction is finished, if the rail car platform is adopted, a rail car needs to arrive at a working site from a nearby station after a skylight point starts, and leaves the working site to arrive at the nearby station before the skylight point is finished. Therefore, no matter which method is adopted, the effective operation time is shortened greatly, according to experience, the time required by grounding of a contact net and assembling and disassembling of a platform or passing of a rail car into and out of a tunnel is deducted from the skylight time of 3 hours, the effective operation time is only 1-1.5 hours, and the effect is very low.

Aiming at the defect characteristics of the existing railway tunnel lining, some common treatment methods exist at present, such as: grouting is adopted for filling holes behind tunnel lining backs, grouting plugging and grooving drainage are adopted for lining water leakage, heat preservation is increased for freezing damage, and an electric heating belt is additionally arranged to combine drainage. Common methods for the defects of insufficient lining thickness, cracking, slab staggering, deformation, corrosion and the like include methods of net hanging spray anchor, supporting steel arch centering, simultaneous net hanging spray anchor of the supporting steel arch centering, W steel belt reinforcement and the like, and in recent years, lining defects of high-speed railway tunnels are often remedied by adopting a lining and arch sleeving mode.

In the disease treatment method aiming at insufficient lining thickness, cracking, slab staggering, deformation and corrosion, the W steel strip reinforcement cannot adopt a thicker steel plate due to the steel strip forming, the bending resistance and the shearing resistance are limited, the method belongs to weak reinforcement, and other methods all need large equipment and heavier steel or sand stones, so that the carrying and transition processes are difficult during construction, the influence of effective operation time is added, the working efficiency is lower, often, only 2-3 days are needed before a line is opened, the treatment project can be completed after the opening is completed within 2-3 months, the whole process consumes a large amount of manpower, and the labor cost is increased. Therefore, the methods are more directed to the treatment of the sections with serious potential safety hazard caused by lining defects, and cannot be widely applied and implemented.

SUMMERY OF THE UTILITY MODEL

In view of this, the main object of the present invention is to provide a reinforcing device for the defect management of existing railway tunnel lining, so as to solve the technical problems of the existing tunnel lining defects such as insufficient lining thickness, cracking, slab staggering, deformation and corrosion reinforcement.

The purpose of the utility model and the technical problem thereof are realized by adopting the following technical scheme. The foundation the utility model provides a reinforcement reinforcing apparatus for existing railway tunnel lining defect is rectified, it includes:

the fiber composite material layer is fixed at the defect position of the tunnel lining and comprises a fiber layer, and a plurality of sectional materials which are sequentially connected are arranged in the fiber layer;

and the high-strength mortar layers are respectively filled in the sectional materials.

Further, in the reinforcing and reinforcing device for the defect treatment of the existing railway tunnel lining, the fiber composite material layer is fixedly connected with the tunnel lining through the anchor bolt.

Further, the compressive strength of the high-strength mortar layer is more than 50 MPa.

Further, in the reinforcing and reinforcing device for the defect treatment of the existing railway tunnel lining, the anchor bolt is a chemical anchor bolt, and the depth of the anchor bolt inserted into the tunnel lining is 10-30 cm.

Further, in the reinforcing and reinforcing device for the defect repair of the existing railway tunnel lining, the anchor bolts are distributed on the circumferential section of the fiber composite type material layer.

Further, in the reinforcing and reinforcing device for the defect treatment of the existing railway tunnel lining, a group of anchor bolt holes matched with the anchor bolts are formed in the fiber composite material layer, and the distance between every two anchor bolt holes is 0.4-1.5 m.

Further, in the reinforcing and reinforcing device for the existing railway tunnel lining defect treatment, the longitudinal distance of the fiber composite material layer is 0.5-2 m, and the section height is 3-10 cm.

Further, in the reinforcing and reinforcing device for the existing railway tunnel lining defect treatment, the fiber layer is made of basalt fibers, glass fibers, carbon fibers or aramid fibers, and the thickness of the fiber layer is more than 1 mm.

Further, in the reinforcing and reinforcing device for the defect treatment of the existing railway tunnel lining, a plurality of the sectional materials are sequentially and fixedly connected into a whole through connecting joints; the section bar is a steel pipe.

Further, the joints of the adjacent profiles are provided with reinforcing plates.

Furthermore, the connecting joint is a socket type connecting steel pipe which is matched with the cross section of the fiber composite material layer in shape, and the socket type connecting steel pipe is made of profile steel.

Further, the reinforcing plate is provided with anchor bolt holes matched with the anchor bolts, and the distance between the anchor bolt holes is 0.4-1.5 m; the tunnel lining is provided with a reserved bolt hole aligned with the anchor bolt hole.

Firstly, investigating a tunnel lining disease section to determine a disease treatment range and a disease treatment scheme, then scanning the section of the tunnel of the disease section by a section scanner, and then manufacturing a fiber composite material layer according to the section scanning shape and the designed size.

Compared with the prior art, the utility model, at least, have following advantage:

reinforcement reinforcing apparatus, through the complex of a plurality of section bars, fibrous layer, the mortar layer three kinds of materials that excel in to adjust the combination cross-section of a plurality of section bars, fibrous compound number of piles or the intensity of the mortar that excels in, make new combined material's comprehensive bearing capacity reach the bearing capacity that surpasss the shaped steel bow member that the tunnel was commonly used even. When the composite profile is installed, the composite profile is closely attached to the tunnel lining, the integral bearing capacity and the deformation resistance of the composite profile are improved by adjusting the distance between the adjacent composite profiles, and then the reinforcing effect is achieved on the defect section of the tunnel lining. In addition, the composite section formed by a plurality of sections and fibers adopted by the technology is lighter in weight and easy to carry, and the composite section can be manufactured in sections and assembled on site, and high-strength mortar grouting is performed only after the assembly is completed. The installation process is convenient, light and handy, and does not need to invest too much manpower. If necessary, multiple sections can be constructed simultaneously, and the working efficiency is greatly improved.

The above description is only an overview of the technical solution of the present invention, and in order to make the technical means of the present invention clearer and can be implemented according to the content of the description, the following detailed description is made of preferred embodiments of the present invention.

Drawings

Fig. 1 is a schematic cross-sectional view of the reinforcing and reinforcing device for the existing railway tunnel lining defect remediation of the present invention;

FIG. 2 is a schematic cross-sectional view of the reinforcing and reinforcing device for the defect remediation of the existing railway tunnel lining of the present invention;

FIG. 3 is a schematic cross-sectional view of the composite material layer of the present invention;

FIG. 4 is one of the spigot-and-socket joint, the stiffener, and the installation thereof of the present invention;

fig. 5 is a second schematic view of the socket joint, the reinforcing plate and the installation thereof of the present invention;

fig. 6 is a schematic plan view of the composite material layer of the present invention;

fig. 7 is a detailed structure diagram of the socket joint of the present invention.

In the figure, the fiber composite material layer-1; a connecting joint-2; a reinforcing plate-3; an anchor bolt-4; high-strength mortar layer-5; section bar-6; fiber layer-7; tunnel lining-10.

Detailed Description

To further illustrate the technical means and effects of the present invention adopted to achieve the objectives of the present invention, the following preferred embodiments are combined to provide a reinforcement reinforcing device for the defect management of railway tunnel lining, the detailed description of the concrete embodiments, structures, features and effects thereof according to the present invention. In the following description, different "one embodiment" or "an embodiment" refers to not necessarily the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

Referring to fig. 1-7, the utility model provides a reinforcement reinforcing apparatus for existing railway tunnel lining defect remediation, it includes: the fiber composite material layer 1 is fixed at the defect position of the tunnel lining 10, the fiber composite material layer 1 comprises a fiber layer 7, a plurality of sectional materials 6 which are sequentially connected are arranged in the fiber layer 7, in the embodiment, the sectional materials 6 are steel pipes, the sectional materials 6 are made of 60mm multiplied by 3mm sectional materials, and the height is 60 mm; and the high-strength mortar layers 5 are respectively filled in the sectional materials 6.

Specifically, the fiber composite material layer 1 is fixedly connected with the tunnel lining 10 through an anchor bolt 4 and forms a whole. The anchor bolts 4 are chemical anchor bolts which are combined galvanized chemical anchor bolts, the depth d of inserting into the tunnel lining is 10-30 cm, and the inserting depth is determined according to the disease degree and the strength of the lining; the anchor bolts 4 are distributed on the circumferential section of the fiber composite material layer 1; the fiber composite material layer 1 is provided with a group of anchor bolt holes matched with the anchor bolts 4, the distance L2 between the anchor bolt holes is 0.4-1.5 m, and the distance value is determined according to the cross section size and the damage degree of the fixed tunnel.

Specifically, the fiber composite material layer 1 is a circumferential reinforced material layer, the shape and the number of the cross sections of the fiber composite material layer are determined according to the evaluation result of the damage degree of the tunnel lining and the bearing capacity condition of the tunnel lining, for example, at least one fiber composite material layer 1 can be arranged, the fiber composite material layers 1 are distributed along the longitudinal direction of the tunnel, the longitudinal distance L1 is 0.5-2 m, and the section height h is 3-10 cm; the longitudinal spacing is dependent on the degree of damage to the tunnel lining.

Specifically, the fiber layer is made of basalt fibers, carbon fibers, glass fibers or aramid fibers and the like, the thickness of the fiber layer is not less than 1mm, and the thickness of the fiber is determined according to the disease degree. In this embodiment, the fiber composite profile 1 is made of basalt fiber, which has the advantages of light weight, high strength, insulation, corrosion resistance and fatigue resistance, and thus has a significant reinforcing and reinforcing effect on the profile.

Specifically, a plurality of the sectional materials 6 are sequentially fixedly connected into a whole through the connecting joints 2. The connecting joint 2 is a socket type connecting steel pipe which is matched with the cross section shape of the fiber composite material layer 1, the socket type connecting steel pipe is made of profile steel and is made of 50 x 2mm profile steel, and the length of the socket type connecting steel pipe is 205 mm. The joints of adjacent profiles 6 are provided with a reinforcing plate 3 for further reinforcing the joints of two adjacent profiles 6. The reinforcing plate 3 is bent by adopting a 6mm steel plate, and the length is 420 mm; the reinforcing plate 3 is respectively provided with anchor bolt holes matched with the anchor bolts 4, the distance between every two anchor bolt holes is 0.4-1.5 m, and the distance value is determined according to the cross section size and the damage degree of the fixed tunnel; have on the tunnel lining with the reserve bolt hole that the anchor bolt hole aligns, make fibre compound material layer 1 and reinforcing plate 3 and tunnel lining 10 connect as an organic wholely through the connection of crab-bolt 4 with anchor bolt hole and reserve bolt hole.

Specifically, the compressive strength of the high-strength mortar layer is greater than 50Mpa, and the high-strength mortar layer is composed of mortar with the compressive strength greater than 50 Mpa; preferably, the compressive strength of the high-strength mortar layer is 70-80 MPa, and the high-strength mortar in the value range can be quickly set and hardened, so that the effects of early strength and high strength are realized.

The fiber composite material layer 1, the connecting joint 2 and the reinforcing plate 3 are customized in a factory according to a reinforcing scheme. After the manufacturing is finished, the surfaces of the fiber composite section bar 1, the spigot-and-socket connecting steel pipe and the reinforcing plate 3 are all subjected to anticorrosion treatment (the anticorrosion treatment is carried out by adopting paint coating). During site operation, the fiber composite material layer 1 is installed according to the designed interval, and high-strength mortar is circularly injected into the fiber composite material through grouting equipment after installation, so that the fiber composite material layer 1 is full in grouting and dense in filling.

The utility model discloses an implementation as follows:

firstly, investigating a tunnel lining defect section, and determining a disease treatment range and a disease treatment scheme;

according to the renovation range and the renovation scheme, clear marks and marked lines are made on the left side and the right side of the lining of the renovation section by using marking pens;

scanning by a section scanner to accurately measure the section of the tunnel at the marked part, and measuring and fitting section data for multiple times;

processing a plurality of sectional materials 6 according to the section scanning data, wherein the plurality of sectional materials 6 can be processed respectively;

performing fiber compounding on the steel pipe assembly by a fiber-profile steel compounding technology;

before field installation, the surface of the concrete lining is polished and cleaned, and epoxy resin is coated (the coating thickness is 1-3mm, and the aim is to strengthen the combination of the fiber composite material layer 1 and the tunnel lining 10);

all fabricated composite sections (each fiber composite material layer 1 for treating tunnel lining defects) must be pre-assembled once before formal assembly. Each section of each fiber composite material layer 1 is pre-spliced into a whole ring according to a formal splicing sequence, the whole ring is matched with the inner side of a tunnel lining, the starting and stopping position of each section is marked on the tunnel lining, and the position of a reserved bolt hole (which is aligned with an anchor bolt hole on the fiber composite material layer 1) is marked, particularly the central position of a vault is marked;

installing the fiber composite material layer in sections according to the marked position, compacting the fiber composite material layer during installation, and punching a tunnel lining at the anchor bolt hole position of the fiber composite material layer in sequence (aiming at fixing the reinforcing device on the tunnel lining);

cleaning the hole, implanting a combined type zinc-plated chemical anchor bolt, and fixing the fiber composite material layer. The anchor bolt hole operation is sequentially and synchronously performed from the central position to the left end and the right end (the purpose is to prevent the installation fiber composite material layer 1 from rotating and ensure that the center of the fiber composite material layer 1 is coincident with the central position of the tunnel lining);

when in installation, the adjacent two sections are connected by adopting socket type connecting steel pipes and reinforced by adopting a reinforcing plate;

checking whether the composite section is closely attached to the tunnel lining or not, checking whether the joints are aligned or not, and if so, coating resin to seal the joints;

after the fiber composite material layer is installed, grouting operation is performed in sequence. The grouting material adopts high-strength mortar, and the grouting mode is circulating grouting (aiming at discharging air in the section bar 6 through circulating grouting and improving the filling degree of the grouting material in the section bar);

after grouting is finished, the pipeline is immediately disassembled and cleaned, exposed parts of the grouting hole embedded pipes are cut after grout is solidified (the embedded pipes are temporarily added parts in the grouting process and can be disassembled after use), and the embedded pipes are plugged by using an anchoring agent (the plugging of the anchoring agent prevents the unsolidified grout in some pipes from flowing out), so that the structure is prevented from leaking water after hole sealing.

Engineering practice shows, to the reinforcement problem of existing tunnel lining defect, adopt a reinforcement reinforcing apparatus for existing railway tunnel lining defect renovation, can reduce construction cost and reduce under the condition of the construction degree of difficulty, effectively promote tunnel lining's whole bearing capacity and anti deformability, be one kind to the reinforced effective measure of existing railway tunnel lining defect.

The numerical range recited in the present invention includes all the numerical values within this range, and includes the range value composed of any two numerical values within this range. The utility model discloses the different numerical values of the same index that appear in all embodiments can make up wantonly, constitutes the scope value.

The features of the invention claimed in the claims and/or in the description may be combined, but the combination is not limited to the combination defined in the claims by the reference. The technical solution obtained by combining the technical features in the claims and/or the specification is also the scope of the present invention.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any simple modification, equivalent change and modification made by the technical spirit of the present invention to the above embodiments are all within the scope of the technical solution of the present invention.

Claims (10)

1. A reinforcement reinforcing apparatus for existing railway tunnel lining defect remediation, its characterized in that, it includes:

the fiber composite material layer is fixed at the defect position of the tunnel lining and comprises a fiber layer, and a plurality of sectional materials which are sequentially connected are arranged in the fiber layer;

and the high-strength mortar layers are respectively filled in the sectional materials.

2. A reinforcing and strengthening device for the amelioration of defects in existing railroad tunnel liners as recited in claim 1, wherein said fibrous composite lumber layer is fixedly connected to said tunnel liner by anchor bolts; the compressive strength of the high-strength mortar layer is more than 50 Mpa.

3. A reinforcing and reinforcing apparatus for the rehabilitation of existing railway tunnel lining defects as set forth in claim 2, wherein said anchor bolts are chemical anchor bolts inserted into the tunnel lining to a depth of 10-30 cm.

4. A reinforcing and strengthening device for the lining defect management of an existing railway tunnel according to claim 3, in which said anchor bolts are distributed over the circumferential cross-section of the layer of fibre composite material.

5. A reinforcing and strengthening device for the lining defect of the existing railway tunnel according to claim 4, wherein said fiber composite type material layer has a plurality of anchor bolt holes, and the distance between each anchor bolt hole is 0.4-1.5 m.

6. A reinforcing and strengthening device for the lining defect remediation of an existing railway tunnel as claimed in claim 5, wherein the longitudinal spacing of the fibre composite layers is 0.5 to 2m and the section height is 3 to 10 cm.

7. A reinforcing and strengthening device for the treatment of the defects of the existing railway tunnel lining as recited in claim 6, wherein said fiber layer is made of basalt fiber, glass fiber, carbon fiber or aramid fiber, and the thickness thereof is more than 1 mm.

8. A reinforcing and strengthening device for the rehabilitation of the existing railway tunnel lining defect as recited in claim 7, wherein a plurality of said section bars are fixedly connected in sequence into a whole by means of connecting joints; the section bar is a steel pipe.

9. A reinforcing and strengthening device for the rehabilitation of existing railway tunnel lining defects as recited in claim 8, wherein a reinforcing plate is provided at the junction of adjacent said sections.

10. A reinforcing and strengthening device for the rehabilitation of existing railway tunnel lining defects as recited in claim 9, wherein said connection fitting is a socket type connection steel pipe which is fitted to the cross-sectional shape of said fiber composite material layer, said socket type connection steel pipe being made of profile steel; the reinforcing plate is provided with an anchor bolt hole matched with the anchor bolt; the tunnel lining is provided with a reserved bolt hole aligned with the anchor bolt hole.

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