CN219754551U - Reinforcing structure of tunnel - Google Patents

Abstract

The utility model discloses a reinforcement structure of a tunnel, which is used for providing support for a newly-built tunnel to be close to an existing tunnel and comprises an anchoring assembly, a connecting assembly and at least two groups of arch units; the anchoring assembly is used for anchoring and connecting each arch frame unit with a newly-built tunnel, at least two groups of arch frame units are arranged at intervals, and the connecting assembly is respectively connected with at least two groups of arch frame units; the arch frame unit comprises a vault arc section and two groups of support sections which are oppositely arranged, the two groups of support sections are respectively connected with two ends of the vault arc section, the vault arc section is used for being abutted with the hole top of a newly-built tunnel, and the two groups of support sections are respectively used for being abutted with two side walls of the newly-built tunnel. The reinforcing structure of the tunnel is used for constructing a new tunnel nearby the existing tunnel and supporting and reinforcing the newly-constructed tunnel so as to ensure the safety and the progress of construction, and has the advantages of stable structure, less construction joints and difficult leakage.

Description

Reinforcing structure of tunnel

Technical Field

The utility model relates to the technical field of tunnel construction, in particular to a reinforcing structure of a tunnel.

Background

In tunnel construction, a new tunnel needs to be built nearby an existing tunnel according to design requirements, so that the traffic requirements are met.

The new tunnel is built nearby the existing tunnel, the safety of the new tunnel needs to be guaranteed, meanwhile, the existing tunnel needs to be guaranteed not to be interfered, so that a construction unit can take reinforcing measures on the new tunnel when the new tunnel is excavated according to geological conditions of construction, and the supporting safety of the excavated part of the new tunnel is guaranteed. The method comprises the steps that anchor rod grouting is adopted in the existing newly-built tunnel close to the existing tunnel, then net hanging and concrete spraying are carried out for primary support, and the requirement of supporting and reinforcing can be met by adopting the reinforcing mode, but the maintenance time is long, and the construction period requirement is not facilitated; or the steel arch is adopted for supporting, the existing steel arch is adopted for supporting and reinforcing the newly-built tunnel, the steel arch is independent, lining forming is required to be poured respectively, more concrete construction joints for lining pouring are formed, and leakage is easy to occur.

In view of this, it is necessary to provide a new reinforcing structure for tunnels that solves or at least alleviates the technical drawbacks mentioned above.

Disclosure of Invention

The utility model mainly aims to provide a tunnel reinforcing structure, and aims to solve the problems that in the prior art, a single steel arch is used for reinforcing concrete construction joints for lining casting are more and leakage is easy to occur.

In order to achieve the above-mentioned object, the present utility model provides a reinforcement structure of a tunnel for providing support for a newly-built tunnel approaching an existing tunnel, which includes an anchor assembly, a connection assembly, and at least two sets of arch units; the anchoring assembly is used for anchoring and connecting each arch frame unit with a newly-built tunnel, at least two groups of arch frame units are arranged at intervals, and the connecting assemblies are respectively connected with at least two groups of arch frame units; the arch center unit comprises a vault arc section and two groups of support sections which are oppositely arranged, the two groups of support sections are respectively connected with two ends of the vault arc section, the vault arc section is used for being abutted with the roof of the newly-built tunnel, and the two groups of support sections are respectively used for being abutted with two side walls of the newly-built tunnel.

In one embodiment, the anchor assembly includes a dome anchor passing through the dome-shaped section and adapted to extend into the tunnel top soil of the new tunnel, a sidewall anchor passing through the support section and adapted to extend into the sidewall soil of the new tunnel, and a foot lock anchor passing through the sidewall anchor and adapted to extend into the tunnel bottom soil of the new tunnel.

In one embodiment, the dome anchor includes a first dome anchor and a second dome anchor, the first dome anchor and the second dome anchor being spaced apart on the dome-shaped section.

In an embodiment, the side wall anchors include a first side wall anchor and a second side wall anchor, the first side wall anchor and the second side wall anchor being connected to two sets of the support sections, respectively.

In an embodiment, the bottom end of the supporting section is provided with a fixed bottom plate, the foot locking anchoring piece comprises a first foot locking anchor rod and a second foot locking anchor rod, and the first foot locking anchor rod and the second foot locking anchor rod are respectively connected to the two groups of fixed bottom plates of the supporting section.

In an embodiment, the number of the first foot locking anchors is four, four mounting holes are formed in four corners of the fixed bottom plate, and the four first foot locking anchors penetrate through the four mounting holes respectively and extend into soil body at the bottom of the hole.

In an embodiment, the connection assembly comprises a plurality of arch reinforcement bars arranged at intervals, and each arch reinforcement bar is respectively penetrated with the arch arc-shaped sections for connecting at least two groups of arch units.

In an embodiment, the connection assembly further comprises connection bars, and the connection bars are respectively penetrated through the support sections connecting at least two groups of arch units.

In one embodiment, the dome-shaped section is removably connected to the support section by a threaded fastener.

In one embodiment, the dome-shaped section and the support section are both channel steel.

In the technical scheme of the utility model, the reinforcement structure is used for constructing a new tunnel nearby the existing tunnel and supporting and reinforcing the newly-constructed tunnel so as to ensure the safety and progress of construction; the reinforcement structure comprises at least two groups of arch units in the whole design, the arch units are connected together through the connecting assembly, and the arch units are in anchoring connection with the newly-built excavated tunnel and are used for integrally casting when concrete is cast, so that the newly-built excavated tunnel is integrally supported and reinforced, the number of construction joints is reduced, the possibility of tunnel leakage is reduced, and the construction quality is ensured; wherein, the arch centre unit that sets up all includes the vault arc section with the tunnel roof looks adaptation of newly-built excavation to and two sets of supporting sections with the both sides wall butt of newly-built tunnel respectively, two sets of supporting sections that set up are used for supporting stable vault arc section, and then reach the whole stable and do not take place when pouring lining concrete and remove or the requirement of deformation. When the method is specifically used in construction, firstly, according to the construction design requirement of a tunnel, the arch crown arc section of each arch frame unit matched with the tunnel top of a newly-built excavated tunnel and two groups of support sections for supporting and fixing the arch crown arc section are prefabricated in a prefabricated field, the number of the arch frame units is selected according to the requirement of excavation support, each arch frame unit is assembled in sequence through a connecting component according to the requirement of the width of each designed arch frame unit, and each arch frame unit is anchored in the newly-built excavated tunnel through an anchoring component so as to facilitate pouring lining concrete. In the implementation process, a proper arch frame unit can be selected according to the hole length of a newly-built excavated tunnel of each lining, so that the arch frame unit can be cast for lining forming at one time, the reserved quantity of construction is reduced, and further the construction of a drainage structure of the newly-built tunnel is reduced, thereby reducing the leakage of the newly-built tunnel and ensuring the construction quality safety of the newly-built tunnel. From this reinforced structure on the whole, this reinforced structure can link together single bow member unit to reduced the construction joint of lining cutting concreting, both guaranteed the wholeness of lining cutting, guaranteed again to the support reinforcement quality of newly-built tunnel, be favorable to going on smoothly of newly-built tunnel construction. The utility model has the advantages of stable structure, less construction joints and difficult leakage.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the following brief description will be given of the drawings required for the description of the embodiments or the prior art, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained from the structures shown in these drawings without the need for inventive effort for a person skilled in the art.

FIG. 1 is a schematic perspective view of a reinforcement structure of a tunnel according to an embodiment of the present utility model;

FIG. 2 is a schematic perspective view of an arch unit and anchor assembly according to an embodiment of the present utility model;

fig. 3 is an exploded view of an arch unit and anchor assembly according to an embodiment of the present utility model.

Reference numerals illustrate:

the achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. 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.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" is at least two groups, for example, two groups, three groups, etc., unless explicitly specified otherwise.

In the present utility model, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or in communication with each other within two sets of elements or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In addition, the technical solutions of the embodiments of the present utility model may be combined with each other, but it is necessary to be based on the fact that those skilled in the art can implement the technical solutions, and when the technical solutions are contradictory or cannot be implemented, the combination of the technical solutions should be considered as not existing, and not falling within the scope of protection claimed by the present utility model.

Referring to fig. 1, the present utility model provides a reinforcement structure 100 for a tunnel, which is used to provide support for a newly-built tunnel approaching an existing tunnel. The reinforcing structure 100 of the tunnel comprises an anchor assembly 1, a connecting assembly 2 and at least two groups of arch units 3; the anchoring assembly 1 is used for anchoring and connecting each arch frame unit 3 with a newly-built tunnel, at least two groups of arch frame units 3 are arranged at intervals, and the connecting assembly 2 is respectively connected with at least two groups of arch frame units 3; the arch frame unit 3 comprises a vault arc-shaped section 31 and two groups of support sections 32 which are oppositely arranged, the two groups of support sections 32 are respectively connected with two ends of the vault arc-shaped section 31, the vault arc-shaped section 31 is used for being abutted with the roof of a newly-built tunnel, and the two groups of support sections 32 are respectively used for being abutted with two side walls of the newly-built tunnel.

In the above embodiment, the reinforcement structure is used for constructing a new tunnel near the existing tunnel and supporting and reinforcing the newly-constructed tunnel so as to ensure the safety and progress of construction; the reinforcement structure comprises at least two groups of arch units 3 in the whole design, the arch units 3 are connected together through the connecting assembly 2, and the arch units 3 are in anchor connection with a newly-built excavated tunnel and are used for integrally casting when concrete is cast, so that the newly-built excavated tunnel is integrally supported and reinforced, the number of construction joints is reduced, the possibility of tunnel leakage is reduced, and the construction quality is ensured; wherein, the arch center unit 3 that sets up all includes the arch crown arc section 31 with the tunnel roof looks adaptation of newly-built excavation to and two sets of supporting sections 32 with the both sides wall butt of newly-built tunnel respectively, two sets of supporting sections 32 that set up are used for supporting stable arch crown arc section 31, and then reach the whole stable and do not take place when pouring lining concrete and remove or warp the requirement. When the method is specifically used in construction, firstly, according to the construction design requirement of a tunnel, the vault arc sections 31 of each arch frame unit 3 matched with the top of a newly-built excavated tunnel and two groups of support sections 32 for supporting and fixing the vault arc sections 31 are prefabricated in a prefabricated field, the number of the appropriate arch frame units 3 is selected according to the requirement of excavation supporting, each arch frame unit 3 is assembled in sequence through the connecting component 2 according to the requirement of the designed width of each arch frame unit 3, and each arch frame unit 3 is anchored in the newly-built excavated tunnel through the anchoring component 1, so that lining concrete is poured. In the implementation process, the proper arch frame unit 3 can be selected according to the hole length of the newly-built tunnel of lining each time, so that the arch frame unit can be cast for lining forming at one time, the reserved quantity of construction is reduced, and further the construction of the drainage structure of the newly-built tunnel is reduced, thereby reducing the leakage of the newly-built tunnel and ensuring the construction quality safety of the newly-built tunnel. From this reinforced structure on the whole, this reinforced structure can link together single bow member unit 3 to the construction joint of lining casting concrete has been reduced, has both guaranteed the wholeness of lining, has guaranteed again to the support reinforcement quality of newly-built tunnel, is favorable to going on smoothly of newly-built tunnel construction. The embodiment has the advantages of stable structure, less construction joints and difficult leakage.

In one embodiment, to ensure anchoring stability, referring to fig. 2, the anchor assembly 1 comprises a dome anchor 11, a sidewall anchor 12 and a foot locking anchor 13, the dome anchor 11 passing through the dome arc section 31 and being adapted to extend into the tunnel top soil of the new tunnel, the sidewall anchor 12 passing through the support section 32 and being adapted to extend into the sidewall soil of the new tunnel, and the foot locking anchor 13 passing through the sidewall anchor 12 and being adapted to extend into the tunnel bottom soil of the new tunnel. The arch crown arc section 31 is anchored with the newly-excavated tunnel roof through the arch crown anchoring piece 11, the arch crown anchoring piece 11 passes through the arch crown arc section 31, is placed in the newly-excavated tunnel roof soil body and is anchored with the tunnel roof soil body, specifically, the arch crown anchoring piece 11 is used for extending into the tunnel roof soil body, grouting is carried out on the arch crown anchoring piece 11, the arch crown anchoring piece 11 is anchored with the tunnel roof soil body, and then the arch crown arc section 31 of each arch crown unit 3 is anchored with the tunnel roof soil body, so that the integral framework connected together is fixed; in the same principle, during construction, each supporting section 32 is respectively anchored with the side wall of the newly-excavated tunnel by grouting through the side wall anchoring piece 12, and each supporting section 32 is respectively anchored with the bottom of the newly-excavated tunnel by grouting through the locking foot anchoring piece 13, so that each arch frame unit 3 is respectively stabilized and reinforced, and the anchoring with the bottom of the newly-excavated tunnel is stabilized, thereby avoiding the movement during pouring lining concrete and influencing the pouring quality.

In one embodiment, referring to fig. 3, the dome anchor 11 includes a first dome anchor 111 and a second dome anchor 112, the first dome anchor 111 and the second dome anchor 112 being spaced apart on the dome-shaped section 31. The arch arc-shaped section 31 is semicircular, and the first arch-shaped anchor rod 111 and the second arch-shaped anchor rod 112 are oppositely arranged at two positions of the arch arc-shaped section 31, so that anchoring with a hole roof is more stable; the first dome anchor 111 and the second dome anchor 112 may be symmetrically arranged, and the number is not limited to one. Also, as shown in fig. 3, the side wall anchors 12 include a first side wall anchor 121 and a second side wall anchor 122, the first side wall anchor 121 and the second side wall anchor 122 being connected to the two sets of support sections 32, respectively; the first and second sidewall anchors 121 and 122 are used to stabilize the two sets of support sections 32 of each arch unit 3 to the two sidewalls of the newly-built tunnel, respectively, and the number is not limited to one.

In an embodiment, referring to fig. 3, a bottom end of the support section 32 is provided with a fixing base 321, and the foot locking anchor 13 includes a first foot locking anchor 131 and a second foot locking anchor 132, where the first foot locking anchor 131 and the second foot locking anchor 132 are respectively connected to the fixing base 321 of the two sets of support sections 32. The fixed bottom plate 321 is horizontally arranged, and the first foot locking anchor rods 131 and the second foot locking anchor rods 132 vertically extend downwards into soil bodies at the bottom of the holes to anchor each group of support sections 32. Specifically, the number of the first locking anchor rods 131 is four, four mounting holes are formed in four corners of the fixing base plate 321, and the four first locking anchor rods 131 penetrate through the four mounting holes respectively and extend into soil at the bottom of the hole, so that anchoring is more stable. Likewise, the number of the second leg locking bolts 132 may be 4.

In an embodiment, referring to fig. 1, the connection assembly 2 includes a plurality of spaced apart dome reinforcements 21, each dome reinforcement 21 being respectively threaded with a dome-shaped section 31 connecting at least two sets of arch units 3. Each arch crown arc-shaped section 31 is connected with the newly-excavated tunnel roof in an anchoring manner, and each arch crown arc-shaped section 31 is connected through the arch crown reinforcing steel bar 21 to form a whole, so that the integrity is ensured, and the reservation of a construction joint is reduced. Specifically, the arch arc sections 31 of each arch unit 3 are uniformly provided with a plurality of connecting holes, the connecting holes are used for penetrating the arch reinforcing steel bars 21, the arch arc sections 31 of at least two groups of arch units 3 are connected together, and the number of the arch units 3 which are suitable for connecting is selected according to the requirement of supporting and reinforcing, and the arch units are symmetrically arranged. Each arch reinforcement 21 which is symmetrically arranged passes through the corresponding connecting hole on the same side of each arch arc section 31, the arch units 3 which need to be connected are connected together, and then the arch reinforcement 21 and each arch arc section 31 are welded in a welding mode to be connected into a whole.

In the same principle, referring to fig. 1, the connection assembly 2 further includes connection bars 22, where the connection bars 22 respectively penetrate through the support sections 32 that connect at least two groups of arch units 3, so that the support sections 32 on the same side of different arch units 3 are connected into a whole, and the integrity is better. This reinforced structure can be through linking to each other into a whole with a plurality of bow member units 3 respectively through the reinforcing bar, and through carrying out the anchor with the vault arc section 31 of every bow member unit 3 and the tunnel roof of newly-built excavation stable, and anchor two sets of supporting sections 32 of every bow member unit 3 with the tunnel hole lateral wall and the hole bottom of newly-built excavation respectively, so anchor and stabilize every bow member unit 3, and then realize holistic stability, take place to remove when avoiding pouring lining concrete and warp, influence the quality of pouring.

In one embodiment, the dome-shaped section 31 is removably connected to the support section 32 by threaded fasteners. The detachable connection facilitates the manufacturing, assembly and disassembly of the various components of the arch unit 3, wherein the threaded fasteners may be in particular bolts.

In one embodiment, the dome-shaped section 31 and the support section 32 are both channel-shaped. The channel steel has the advantages of good mechanical property, high structural strength and lighter weight.

The foregoing description of the preferred embodiments of the present utility model should not be construed as limiting the scope of the utility model, but rather should be understood to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the utility model as defined by the following description and drawings or any application directly or indirectly to other relevant art(s).

Claims (10)

1. The utility model provides a reinforced structure of tunnel for the nearly current tunnel of newly-built tunnel provides support, its characterized in that includes anchor subassembly, coupling assembling and two at least groups bow member units; the anchoring assembly is used for anchoring and connecting each arch frame unit with a newly-built tunnel, at least two groups of arch frame units are arranged at intervals, and the connecting assemblies are respectively connected with at least two groups of arch frame units; the arch center unit comprises a vault arc section and two groups of support sections which are oppositely arranged, the two groups of support sections are respectively connected with two ends of the vault arc section, the vault arc section is used for being abutted with the roof of the newly-built tunnel, and the two groups of support sections are respectively used for being abutted with two side walls of the newly-built tunnel.

2. The tunnel reinforcing structure of claim 1, wherein the anchor assembly comprises a dome anchor passing through the dome-shaped section and adapted to extend into a tunnel top soil body of the new tunnel, a sidewall anchor passing through the support section and adapted to extend into a sidewall soil body of the new tunnel, and a foot lock anchor passing through the sidewall anchor and adapted to extend into a tunnel bottom soil body of the new tunnel.

3. The tunnel reinforcement structure of claim 2, wherein the dome anchor comprises a first dome anchor and a second dome anchor, the first dome anchor and the second dome anchor being spaced apart on the dome-shaped section.

4. The tunnel reinforcement structure of claim 2, wherein the sidewall anchors comprise a first sidewall anchor and a second sidewall anchor, the first and second sidewall anchors being connected to two sets of the support sections, respectively.

5. The tunnel reinforcement structure of claim 2, wherein a bottom end of the support section is provided with a fixed bottom plate, and the foot locking anchor comprises a first foot locking anchor rod and a second foot locking anchor rod, and the first foot locking anchor rod and the second foot locking anchor rod are respectively connected to the fixed bottom plates of the two groups of support sections.

6. The tunnel reinforcing structure according to claim 5, wherein the number of the first foot locking anchors is four, four mounting holes are formed in four corners of the fixing base plate, and the four first foot locking anchors penetrate through the four mounting holes respectively and extend into the soil body at the bottom of the tunnel.

7. A tunnel reinforcing structure according to claim 1, wherein said connection assembly includes a plurality of spaced apart dome rebars, each of said dome rebars being respectively threaded to connect said dome-shaped sections of at least two sets of said arch units.

8. A tunnel reinforcing structure according to claim 7, wherein said connection assembly further comprises connection bars respectively penetrating said support sections connecting at least two sets of said arch units.

9. The tunnel reinforcing structure according to any one of claims 1 to 8, wherein the dome-shaped section and the support section are detachably connected by a threaded fastener.

10. The tunnel reinforcing structure according to any one of claims 1 to 8, wherein the dome-shaped section and the support section are both channel steel.