CN219344700U - Section bar for tunnel lining reinforcement and tunnel lining reinforcing structure - Google Patents

Abstract

The embodiment of the application provides a section bar for tunnel bushing reinforcement and tunnel bushing reinforcement structure, including: the I-shaped section is used for fixing the template and can be arranged in a surrounding manner along the circumferential inner wall of the tunnel lining; the I-section bar comprises a side wall, a first wall and a second wall; the first wall and the second wall are perpendicular to the side wall and are arranged at two longitudinal ends of the side wall, and the first wall is used for being fixed with the circumferential inner wall of the tunnel lining. Adopt the section bar for tunnel sleeve lining reinforcement that provides in this application embodiment, compare in prior art, have following technical effect: the I-shaped section bar is fixed with the circumferential inner wall of the tunnel lining and is arranged along the circumferential inner wall in a surrounding way, and the I-shaped section bar is used for fixing the template, so that an anchor rod and a temporary support are not required to be additionally arranged in the fixing process of the template and the tunnel lining to fix the template and the tunnel lining, the fixing between the template and the tunnel lining is simplified, the construction process is simplified, and the construction period is shortened.

Description

Section bar for tunnel lining reinforcement and tunnel lining reinforcing structure

Technical Field

The application relates to the technical field of tunnel construction, in particular to a section bar for reinforcing a tunnel sleeve liner and a tunnel sleeve liner reinforcing structure.

Background

At present, the mountain tunnel is mainly constructed by adopting a mine method, primary support and secondary lining are basically cast and constructed on site, the construction environment is very bad, and the construction quality is difficult to be ensured. The built mountain tunnel can generate different degrees of diseases after being put into use, wherein lining cracking, void, block falling, water leakage and the like are most common. After the tunnel is damaged, the stress performance of the tunnel structure is reduced, so that the stability of the tunnel lining structure is affected, the service life of the structure is shortened, and the driving safety is endangered when serious. Along with the continuous increase of the operation period of the railway and highway tunnels in China, tunnel lining diseases gradually step into the high-rise period, and the traffic tunnels in China gradually transition from the construction peak period to the maintenance peak period.

When the existing railway tunnel has lining crack and block falling risks, common corrective measures include local disassembly and replacement, cast-in-situ reinforced concrete lining, spray concrete lining, spliced corrugated steel plates, anchor rods, W steel belts and other reinforcing measures. When the disease degree is serious, reinforcing measures of cast-in-situ reinforced concrete bushings are often adopted. The cast-in-situ reinforced concrete lining is required to pass through the links of existing lining roughening, drilling nails, erecting a steel frame, shi Zuosuo foot anchor rods, binding steel bars, installing a steel template or a bamboo plywood template, pouring concrete, backfilling grouting, removing a mould, polishing and the like, and has the advantages of multiple construction procedures, long construction period and high construction risk. Especially, the links of drilling nails, binding reinforcing steel bars and installing and dismantling templates are time-consuming and labor-consuming, and become key links for restricting tunnel renovation construction.

Disclosure of Invention

The embodiment of the application provides a section bar for reinforcing a tunnel lining, which aims to solve the problems of multiple construction procedures and long construction period of cast-in-situ concrete lining of a railway tunnel.

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

a tunnel liner reinforcing section bar comprising:

the I-shaped section bar is used for fixing the template or carrying out temporary support, and can be arranged in a surrounding manner along the circumferential inner wall of the tunnel lining; the I-shaped section bar comprises a side wall, a first wall and a second wall; the first wall and the second wall are perpendicular to the side wall and are arranged at two longitudinal ends of the side wall, and the first wall is used for being fixed with the circumferential inner wall of the tunnel lining.

Optionally, the first wall is provided with first mounting holes, and the first mounting holes are uniformly arranged along the surface of the first wall.

Optionally, a second mounting hole penetrating through the wall is formed in the side wall, and the second mounting hole is used for mounting a longitudinal split anchor rod so as to fix the side wall and the template.

Optionally, the second mounting holes are uniformly arranged in the longitudinal direction of the side wall.

Optionally, the surface area of the first wall is greater than the surface area of the second wall.

Optionally, the i-section bar has an arc structure.

Optionally, the number of the I-shaped sections is a plurality, and each I-shaped section is sequentially arranged along the circumferential direction of the tunnel lining to form an annular I-shaped section;

the number of the annular I-shaped sections is at least two, and the annular I-shaped sections are distributed along the longitudinal direction of the tunnel lining.

The application provides a tunnel liner reinforcing structure, comprising the tunnel liner reinforcing section bar according to any one of the above embodiments.

The tunnel sleeve lining that this application embodiment provided consolidates and uses section bar includes: the I-shaped section bar is used for fixing the template or carrying out temporary support and can be arranged in a surrounding manner along the circumferential inner wall of the tunnel lining; the I-section bar comprises a side wall, a first wall and a second wall; the first wall and the second wall are perpendicular to the side wall and are arranged at two longitudinal ends of the side wall, and the first wall is used for being fixed with the circumferential inner wall of the tunnel lining.

Adopt the section bar for tunnel sleeve lining reinforcement that provides in this application embodiment, compare in prior art, have following technical effect:

the I-shaped section bar is fixed with the circumferential inner wall of the tunnel lining and is arranged along the circumferential inner wall in a surrounding way, and the I-shaped section bar is used for fixing the template, so that the template is fixed with the tunnel lining without additional drilling nails and binding reinforcing steel bars in the fixing process of the template and the tunnel lining, the fixation between the template and the tunnel lining is simplified, the construction process is simplified, and the construction period is shortened.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application. In the drawings:

fig. 1 is a schematic cross-sectional structural view of a section bar for reinforcing a tunnel liner according to an embodiment of the present application;

fig. 2 is a schematic cross-sectional structural view of a tunnel liner reinforcing structure according to an embodiment of the present application.

The figures are marked as follows:

i-section bar 10, tunnel lining 20;

a second wall 11, a first wall 12, a side wall 13, a second mounting hole 14, a first mounting hole 15.

Detailed Description

The embodiment of the utility model discloses a section bar for reinforcing a tunnel lining, which aims to solve the problems of multiple construction procedures and long construction period of cast-in-situ concrete lining of a railway tunnel.

In order to make the technical solutions and advantages of the embodiments of the present application more apparent, the following detailed description of exemplary embodiments of the present application is given with reference to the accompanying drawings, and it is apparent that the described embodiments are only some of the embodiments of the present application and not exhaustive of all the embodiments. It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other.

Referring to fig. 1-2, fig. 1 is a schematic cross-sectional structural diagram of a section bar for reinforcing a tunnel liner according to an embodiment of the present application; fig. 2 is a schematic cross-sectional structural view of a tunnel liner reinforcing structure according to an embodiment of the present application.

In a specific embodiment, the section bar for reinforcing the tunnel sleeve liner provided by the application comprises at least two i-section bars 10, wherein the i-section bars 10 are arranged longitudinally along the tunnel liner 20, templates are arranged between adjacent i-section bars 10, and the templates are preferably arranged in grooves on two sides of the i-section bars 10 for pre-fixing, and are fixed with the tunnel liner 20 through the i-section bars 10. The i-section bar 10 comprises a side wall 13, a first wall 12 and a second wall 11; wherein, the first wall 12 and the second wall 11 are perpendicular to the side wall 13, and the first wall 12 and the second wall 11 are respectively disposed at two longitudinal ends of the side wall 13, and the first wall 12, the second wall 11 and the side wall 13 are preferably integrally disposed, so as to facilitate production and processing. The first wall 12 is detachably and fixedly connected with the circumferential inner wall of the tunnel lining 20, for example, in the form of an anchor rod or a bolt, etc., and can be arranged according to requirements.

Adopt the section bar for tunnel sleeve lining reinforcement that provides in this application embodiment, compare in prior art, have following technical effect:

the I-shaped section bar 10 is fixed with the circumferential inner wall of the tunnel lining 20, and is arranged along the circumferential inner wall in a surrounding manner, and the I-shaped section bar 10 is used for fixing the template, so that in the process of fixing the template and the tunnel lining 20, an anchor rod and a temporary support are not required to be additionally arranged to fix the template and the tunnel lining 20, the fixation between the template and the tunnel sleeve lining is simplified, the construction process is simplified, and the construction period is shortened.

In order to fix the i-section bar 10 and the tunnel lining 20, first mounting holes 15 are formed in the first wall 12, and the first mounting holes 15 are uniformly formed along the surface of the first wall 12 so as to improve stability; preferably, several rows are provided in the vertical direction of the tunnel lining 20, and two first installation holes 15 are provided in each row in the longitudinal direction of the tunnel lining 20; the first mounting hole 15 may be engaged with an anchor rod or a bolt to achieve fixation.

In order to fix the I-shaped section bar 10 and the template, the side wall 13 is provided with second mounting holes 14 penetrating through the wall thickness, and the second mounting holes 14 are distributed along the longitudinal direction of the side wall 13 so as to increase the number of fixing points; the second mounting hole 14 is used for mounting a longitudinal anchor rod, and fixes the i-section bar 10 and the formwork along the longitudinal direction of the tunnel lining 20 to form a reinforcing structure. In this embodiment, the second mounting holes 14 are uniformly provided in the longitudinal direction of the sidewall 13 to increase the stability of the device and enhance the connection strength.

Wherein, in order to further improve the connection strength, the surface area of the first wall 12 contacting the tunnel liner 20 is larger than the surface area of the second wall 11, thereby increasing the contact area between the first wall 12 and the tunnel liner 20, further stabilizing during fixing. Preferably, the i-section 10 has an arc structure, and the contact area between the i-section and the circumferential inner wall of the tunnel lining 20 is further increased through the arc surface, and meanwhile, the fit degree between the i-section and the circumferential inner wall is increased, so that the connection mode is further optimized.

In this embodiment, the number of the i-section bars 10 is a plurality, each i-section bar 10 is sequentially arranged along the reversing direction of the tunnel lining 20 to form an annular i-section bar 10, and the split structure of the annular i-section bar 10 makes the installation simple and convenient, facilitates the transportation inside and outside the tunnel, and improves the convenience. It will be appreciated that the number of the annular i-section bars 10 is at least two, and the templates are arranged between the two annular i-section bars 10 and fixed with the second mounting holes 14 of the i-section bars 10 by means of longitudinal anchoring ties, arranged in the longitudinal direction of the tunnel lining 20.

When in installation, at least two oppositely arranged annular I-shaped sections 10 are erected at the bottom of the tunnel lining 20 in a region to be reinforced or a defect region of the tunnel according to preset intervals, and the annular I-shaped sections 10 are fixed with the tunnel lining 20 through chemical bolts;

arranging U-shaped templates between adjacent annular I-shaped sections 10, anchoring the U-shaped templates and tunnel lining 20 through radial anchor rods, and grouting and fixing;

installing a longitudinal opposite-pull anchor rod to fix the U-shaped template and the I-shaped section bar 10;

setting foot locking anchor rods at the two side wall feet of the I-shaped section 10 and grouting for fixation;

setting a backing plate at the bottom of the I-shaped section bar 10, setting chemical bolts into the hardened lower concrete foundation, and pouring the upper concrete foundation;

and pouring ultra-high-performance reinforced concrete/ultra-high-performance concrete and steel fiber or chopped basalt fiber mixture/high-strength self-compaction concrete and steel fiber or chopped basalt fiber mixture in a pouring cavity formed by the inner walls of the I-shaped section bar 10, the U-shaped template and the tunnel lining 20.

Based on the section bar for reinforcing the tunnel liner, the application also provides a tunnel liner reinforcing structure, which comprises the section bar for reinforcing the tunnel liner according to any one of the embodiments, and the section bar for reinforcing the tunnel liner has the technical effects, so that the tunnel liner reinforcing structure comprising the section bar for reinforcing the tunnel liner also has the technical effects.

While preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the application.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present application without departing from the spirit or scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims and the equivalents thereof, the present application is intended to cover such modifications and variations.

Claims (8)

1. A section bar for reinforcing a tunnel liner, comprising:

the I-shaped section bar is used for fixing the template or carrying out temporary support, and can be arranged in a surrounding manner along the circumferential inner wall of the tunnel lining; the I-shaped section bar comprises a side wall, a first wall and a second wall; the first wall and the second wall are perpendicular to the side wall and are arranged at two longitudinal ends of the side wall, and the first wall is used for being fixed with the circumferential inner wall of the tunnel lining.

2. The tunnel liner reinforcing section bar according to claim 1, wherein the first wall is provided with first mounting holes, and the first mounting holes are uniformly provided along a surface of the first wall.

3. The section bar for reinforcing a tunnel liner according to claim 1, wherein a second mounting hole penetrating through the wall thickness is provided on the side wall, and the second mounting hole is used for mounting a longitudinal split anchor rod so as to fix the side wall and the template.

4. A tunnel liner reinforcing section bar according to claim 3, wherein the second mounting holes are uniformly provided in the longitudinal direction of the side wall.

5. The tunnel liner reinforcing section bar of any one of claims 1-4, wherein the surface area of the first wall is greater than the surface area of the second wall.

6. The tunnel liner reinforcing section bar of claim 5, wherein the i-section bar is of arcuate configuration.

7. The section bar for reinforcing a tunnel liner according to claim 5, wherein the number of the i-section bars is a plurality, and each i-section bar is sequentially arranged along the circumferential direction of the tunnel liner to form an annular i-section bar;

the number of the annular I-shaped sections is at least two, and the annular I-shaped sections are distributed along the longitudinal direction of the tunnel lining.

8. A tunnel liner reinforcing structure comprising the tunnel liner reinforcing section bar according to any one of claims 1 to 7.

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