Assembly type tunnel head ring installation counter-force device

Abstract

The utility model belongs to the technical field of tunnel construction, and particularly relates to an assembly type tunnel head ring installation counter-force device, a tunnel head ring comprises a horizontally arranged bottom plate and two side plates vertically arranged on the upper surface of the bottom plate, and vertical cast-in-place counter-force sections are arranged on the surface of one side of the tunnel head ring at intervals. A plurality of horizontally-arranged first connecting pieces are detachably connected between the cast-in-place counter-force section and the two side plates, each first connecting piece comprises a first profile steel piece and an abutting plate, the surface of the side, away from the cast-in-place counter-force section, of each abutting plate abuts against the surface of the adjacent side plate, and cast-in-place bases are arranged at the two ends, close to the ground, of the cast-in-place counter-force section. The surface of the cast-in-place base is fixedly provided with horizontally-arranged second connecting pieces, and the surface of the side, away from the cast-in-place base, of each second connecting piece abuts against the bottom plate and the adjacent side plate at the same time. And a counter-force device capable of accurately positioning is lacked.

Description

TECHNICAL FIELD

[0001] The utility model belongs to tunnel construction technical field, concretely relates to a kind of assembly type tunnel first ring installation counterforce device. BACKGROUND

[0002] Assembly type lining is often mentioned or applied in the process of tunnel open cut method construction due to its resource saving, low carbon environmental protection and other characteristics, and assembly type tunnel as a new technology is also gradually rising. First ring installation, as the most important construction link in the process of assembly type tunnel construction, is more and more concerned and valued, and the accuracy of its construction is directly related to the accuracy and progress of subsequent installation of assembly type tunnel. In the process of first ring installation of assembly type tunnel, counterforce device not only provides counterforce for precast component installation, but also serves as positioning device for precast component installation, and will also serve as anchor for subsequent precast component tensioning and locking, so the structure stability and position accuracy of counterforce device are directly related to whether assembly type tunnel can be successfully implemented and assembled, and in particular at the connection between open cut tunnel and underground excavation tunnel, not only geographical position, installation accuracy and construction technology and other problems need to be considered during construction, but also the stability of the connection between open cut tunnel and underground excavation tunnel needs to be ensured, therefore, in view of the problems existing in the prior art, the utility model provides a kind of assembly type tunnel first ring installation counterforce device, which is arranged at the connection between open cut tunnel and underground excavation tunnel, and has the characteristics of simple and efficient construction, stable structure, high accuracy and low cost, and can effectively improve the efficiency of assembly type tunnel construction. CONTENT OF UTILITY MODEL

[0003] Therefore, the utility model aims at providing a kind of assembly type tunnel first ring installation counterforce device, to solve the problem that there is no counterforce device capable of accurate positioning when installing first ring of assembly type tunnel at the connection between open cut tunnel and underground excavation tunnel.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0005] The utility model relates to a kind of assembled tunnel first ring installation counterforce device, it is arranged at the junction of open cut tunnel and tunneling construction, the tunnel first ring includes the bottom plate of horizontal arrangement and the two side plates of vertical arrangement on the upper surface of bottom plate, wherein, two the side plate is about the vertical center line of bottom plate symmetrically arranged, one side surface of the tunnel first ring is spaced apart and vertically casted counterforce section is arranged, the cast-in-place counterforce section is embedded in one end of tunneling, the two end faces of cast-in-place counterforce section adjacent to tunnel first ring are same, a plurality of first connectors of horizontal arrangement are detachably connected between cast-in-place counterforce section and two side plates, and each first connector is spaced apart along the end surface of side plate, each first connector includes first profile steel piece with one end embedded in cast-in-place counterforce section and abutment plate fixedly arranged at the free end of first profile steel piece, the side surface of each abutment plate away from cast-in-place counterforce section is abutted with the surface of adjacent side plate, wherein, the end surface of each side plate is embedded with a plurality of sleeves corresponding to the position of abutment plate, and abutment plate and corresponding sleeve are fixedly connected by bolt;The two ends of cast-in-place counterforce section close to ground are provided with cast-in-place base embedded in the end face of tunneling, the side surface of each cast-in-place base is spaced apart with abutment plate, and the surface of cast-in-place base is fixed with second connector of horizontal arrangement, the side surface of each second connector away from cast-in-place base is abutted with bottom plate and adjacent side plate simultaneously.

[0006] Further, the first connector further includes a connecting plate opposite to the abutment plate and a second profile steel piece disposed between the connecting plate and the abutment plate, the connecting plate is vertically fixedly connected to the end surface of the first profile steel piece away from the side plate, and the second profile steel piece is provided with two pieces and symmetrically disposed above and below on both sides of the corresponding sleeve, one side surface of each second profile steel piece is fixed to the surface of the connecting plate, and the other side surface is fixed to the surface of the abutment plate.

[0007] Further, the surface of each first profile steel piece is vertically fixed with a plurality of pegs, and each peg is disposed in the cast-in-place counterforce section.

[0008] Further, the end face of the tunneling close to the tunnel first ring is provided with a groove matched with the shape of the cast-in-place counterforce section and the cast-in-place base, and the cast-in-place counterforce section is provided with a plurality of anchoring steel bars inserted into the tunneling in the vertical plane.

[0009] Further, the plurality of anchoring steel bars are uniformly spaced apart along the end surface of the cast-in-place counterforce section in the same vertical plane.

[0010] The utility model has the advantages that:

[0011] 1. The utility model discloses a cast-in-situ counterforce segment is set to the one end of the tunneling tunnel as the connecting foundation with the open cut tunnel, and through detachable connection between the first connecting piece of multiple interval setting of tunnel first ring and counterforce segment realizes the tension and positioning of prefabricated tunnel, effectively improves the positioning accuracy of tunnel first ring, and provides effective support for the assembly of subsequent tunnel, simplifies the construction process and improves the assembly efficiency.

[0012] Other advantages, objects, and features of the present utility model will be set forth in the following specification and, in part, will be apparent to those skilled in the art from the present utility model, or can be learned by practice of the present utility model. The objects and other advantages of the present utility model can be realized and obtained by the following specification. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to make the purpose, technical scheme and beneficial effect of the utility model more clear, the utility model provides the following drawings for explanation:

[0014] Figure 1 It is tunnel first ring and cast-in-situ counterforce segment structure schematic view of the utility model;

[0015] Figure 2 It is tunnel first ring and cast-in-situ counterforce segment side view of the utility model;

[0016] Figure 3 It is tunnel first ring and cast-in-situ counterforce segment plan view of the utility model;

[0017] Figure 4 It is cast-in-situ counterforce segment structure schematic view of the utility model;

[0018] Figure 5 It is Figure 4 enlarged schematic view of the utility model in A place;

[0019] Figure 6 It is first connecting piece and cast-in-situ counterforce segment connecting structure schematic view of the utility model.

[0020] The signs in the drawings are as follows:

[0021] 1 mountain, 2 tunneling tunnel, 3 tunnel first ring, 301 bottom plate, 302 side plate, 4 cast-in-situ counterforce segment, 5 first connecting piece, 501 first steel piece, 502 stop plate, 503 connecting plate, 504 second steel piece, 6 cast-in-situ base, 7 second connecting piece, 8 bolt. DETAILED DESCRIPTION

[0022] As Figures 1-6 indicated,

[0023] The utility model provides an assembly type tunnel first ring installation counterforce device, is arranged in the connection place (the opening for the tunneling tunnel 2 construction is set up in the mountain 1) of open cut tunnel and tunneling tunnel 2 construction, the tunnel first ring 3 includes the bottom plate 301 of horizontal arrangement and the two side plates 302 of vertical arrangement on the upper surface of bottom plate 301, wherein, bottom plate 301 is horizontally arranged on the ground, two side plates 302 are symmetrically arranged about the vertical center line of bottom plate 301, two side plates 302 jointly constitute the arched structure of tunnel, and each side plate 302 and the support of bottom plate 301 between two side plates 302 can be fixedly connected through the cooperation of bolt and nut, the vertical section of cast-in-place counterforce section 4 is embedded in one end of tunneling tunnel 2, the vertical section of cast-in-place counterforce section 4 is the same as the vertical section after the combination of two side plates 302, the inside of cast-in-place counterforce section 4 is provided with reinforcement cage or section steel to improve its own strength, a plurality of horizontally arranged first connecting pieces 5 can be detachably connected between cast-in-place counterforce section 4 and two side plates 302, and each first connecting piece 5 is arranged along the end face arc of side plate 302, each first connecting piece 5 includes first section steel piece 501 embedded in cast-in-place counterforce section 4 and abutment plate 502 fixedly arranged at the free end of first section steel piece 501, and abutment plate 502 is vertically arranged, and the side surface of each abutment plate 502 away from cast-in-place counterforce section 4 abuts with the surface of adjacent side plate 302, wherein, the end face of each side plate 302 is embedded with a plurality of sleeves (the sleeve is not shown in the figure) corresponding to abutment plate 502, each sleeve is horizontally arranged, and the inside of sleeve is provided with screw thread (one end of sleeve is located on the outer surface of cast-in-place counterforce section 4), and the surface of each abutment plate 502 is provided with through hole corresponding to sleeve, and each abutment plate 502 and corresponding sleeve are fixedly connected through bolt; the two ends of cast-in-place counterforce section 4 close to the ground are integrally formed with cast-in-place base 6, cast-in-place base 6 is also embedded in one end surface of tunneling tunnel 2, and the side surface of each cast-in-place base 6 is arranged at intervals with abutment plate 502, and the surface of cast-in-place base 6 is fixedly provided with horizontally arranged second connecting piece 7 through bolt, and the side surface of each second connecting piece 7 away from cast-in-place base 6 is vertically arranged and abuts with part of surface of bottom plate 301 and adjacent side plate 302.

[0024] In combination with the drawings, when the tunnel first ring 3 is installed at the connection of the open-cut tunnel and the tunnel 2, a groove is first grooved at one end of the tunnel 2 for the construction of the cast-in-place reaction segment 4, then a formwork frame is erected at the corresponding position and the cast-in-place reaction segment 4 and the cast-in-place base 6 are made, and then the tunnel first ring 3 is installed after the curing of the cast-in-place reaction segment 4 and the cast-in-place base 6, the bottom plate 301 is first placed horizontally on the ground and simultaneously abuts against the side surface of the two second connecting pieces 7, then the two side plates 302 are fixed and installed on the upper surface of the bottom plate 301 through bolt and nut combination, the side surface of the side plate 302 is abutted against the surface of each abutting plate 502 by moving the two side plates 302 in the width direction of the bottom plate 301, then the bolt is passed through the through hole in the surface of each abutting plate 502 and is fixedly connected with the corresponding sleeve through the thread, so that the cast-in-place reaction segment 4 is fixedly connected with the two side plates 302, at this time, the surface of the two side plates 302 is also abutted against and aligned with the surface of the second connecting piece 7, the end surface of the two side plates 302 and the bottom plate 301 is in the same vertical plane, the connection position between each side plate 302 and the bottom plate 301 corresponds, then the two side plates 302 and the bottom plate 301 are fixedly connected through the bolt, the whole installation process of the tunnel first ring 3 is realized, the reaction force of the tunnel first ring 3 can be applied through the cast-in-place reaction segment 4, and accurate positioning during the installation of the tunnel first ring 3 is realized, so that the construction efficiency is effectively improved; of course, the gap between the tunnel first ring 3 and the cast-in-place reaction segment 4 can be consolidated by erecting a formwork and pouring concrete, so that the stability and integrity of the two are effectively improved.

[0025] In the embodiment, the first connecting piece 5 further comprises a connecting plate 503 arranged opposite to the abutting plate 502 and a second steel piece 504 arranged between the connecting plate 503 and the abutting plate 502, the connecting plate 503 is vertically arranged and fixedly welded at the end surface of the first steel piece 501 away from the side plate 302, and the second steel piece 504 is arranged in two pieces and symmetrically arranged above and below the two sides of the corresponding sleeve, the second steel piece 504 is a I-beam, one side surface of each second steel piece 504 is fixedly welded with the surface of the connecting plate 503, and the other side surface is fixedly welded with the surface of the abutting plate 502.

[0026] In combination with the drawings, the second steel piece 504 is arranged between the connecting plate 503 and the abutting plate 502 to space them apart, so that the bolt is convenient to install and the abutting plate 502 and the tunnel first ring 3 are fixed, the working efficiency of the construction personnel is improved, and the stability between the abutting plate 502 and the connecting plate 503 and the first steel piece 501 is effectively ensured through the arrangement of the second steel piece 504, so that the reaction force can be effectively provided to the tunnel first ring 3.

[0027] In this embodiment, a plurality of bolts 8 are vertically welded and fixed on the surface of each of the first steel parts 501 (as shown in the figure, only part of the cast-in-place reaction segment 4 is shown in the figure), and each bolt 8 is arranged in the cast-in-place reaction segment 4, which can effectively improve the stability between the first steel part 501 and the cast-in-place reaction segment 4.

[0028] In this embodiment, a groove matching the shape of the cast-in-place reaction segment 4 and the cast-in-place base 6 is provided on one end face of the dark-excavated tunnel 2 near the tunnel head ring 3, and a plurality of anchor steel bars (the anchor steel bars are not shown in the figure) inserted into the dark-excavated tunnel 2 in the vertical plane are provided in the cast-in-place reaction segment 4, wherein the plurality of anchor steel bars are evenly spaced along the end face of the cast-in-place reaction segment 4 in the same vertical plane.

[0029] As shown in the figure, by setting up multiple anchor steel bars 9, the stability of the cast-in-place reaction segment 4 can be effectively improved, the integrity of the entire reaction device and the end face of the dark tunnel 2 in the mountain 1 is strengthened, and the installation and positioning accuracy of the subsequent tunnel first ring 3 are guaranteed.

[0030] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. An assembled tunnel first ring installation counter-force device, which is arranged at the connection of the open cut tunnel and the tunnel (2) construction, characterized in that: The tunnel first ring (3) comprises a horizontally arranged bottom plate (301) and two vertically arranged side plates (302) on the upper surface of the bottom plate (301), wherein the two side plates (302) are symmetrically arranged about the vertical center line of the bottom plate (301), a vertically arranged cast-in-place counterforce segment (4) is arranged on one side surface of the tunnel first ring (3), the cast-in-place counterforce segment (4) is embedded in one end of the tunnel (2), the cast-in-place counterforce segment (4) is adjacent to the two end surfaces of the tunnel first ring (3), a plurality of horizontally arranged first connecting pieces (5) are detachably connected between the cast-in-place counterforce segment (4) and the two side plates (302), each first connecting piece (5) is arranged at intervals along the end surface of the side plate (302), each first connecting piece (5) comprises a first profile steel piece (501) embedded in one end of the cast-in-place counterforce segment (4) and a stop plate (502) fixedly arranged at the free end of the first profile steel piece (501), and the side surface of each stop plate (502) away from the cast-in-place counterforce segment (4) abuts against the surface of the adjacent side plate (302), wherein a plurality of sleeves corresponding to the positions of the stop plates (502) are embedded in the end surface of each side plate (302), and the stop plate (502) and the corresponding sleeve are fixedly connected by bolts; the two ends of the cast-in-place counterforce segment (4) close to the ground are provided with cast-in-place bases (6) embedded in the end surface of the tunnel (2), the side surface of each cast-in-place base (6) is arranged at intervals with the stop plate (502), and the surface of the cast-in-place base (6) is fixedly provided with a horizontally arranged second connecting piece (7), and the side surface of each second connecting piece (7) away from the cast-in-place base (6) abuts against the bottom plate (301) and the adjacent side plate (302) at the same time.

2. The mounting reaction force device for the assembled tunnel first ring according to claim 1, characterized in that: The first connecting piece (5) further comprises a connecting plate (503) arranged opposite to the stop plate (502) and a second profile steel piece (504) arranged between the connecting plate (503) and the stop plate (502), the connecting plate (503) is vertically and fixedly connected to the end surface of the first profile steel piece (501) away from the side plate (302), and the second profile steel piece (504) is provided with two pieces and symmetrically arranged above and below the two sides of the corresponding sleeve, the side surface of each second profile steel piece (504) is fixed to the surface of the connecting plate (503), and the other side surface is fixed to the surface of the stop plate (502).

3. The mounting reaction force device for the assembled tunnel first ring according to claim 2, characterized in that: The surface of each first profile steel piece (501) is vertically fixed with a plurality of pegs (8), and each peg (8) is arranged in the cast-in-place counterforce segment (4).

4. The mounting reaction force device for the assembled tunnel first ring according to claim 3, characterized in that: The end surface of the tunnel (2) close to the tunnel first ring (3) is provided with a groove matched with the shape of the cast-in-place counterforce segment (4) and the cast-in-place base (6), and a plurality of anchoring steel bars are arranged in the cast-in-place counterforce segment (4) and inserted into the tunnel (2) in the vertical plane.

5. The mounting reaction force device for the assembled tunnel first ring according to claim 4, characterized in that: A plurality of anchoring steel bars are uniformly and interval arranged along the end surface of the cast-in-place counterforce segment (4) in the same vertical plane.

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