Reusable assembly type tunnel safety prestress support

Abstract

The utility model discloses a reusable assembly type tunnel safety prestress support which comprises two gate-type supporting frames, the two gate-type supporting frames are detachably connected through a connecting beam, each gate-type supporting frame comprises a cross beam, supporting columns are fixedly welded to the two ends of the cross beam, first installation seats are fixedly welded to the supporting columns, and second installation seats are fixedly welded to the first installation seats. A second reinforcing oblique beam is fixedly welded between the first mounting base and the supporting column, a second mounting base is fixedly welded to the upper end of the cross beam, third mounting bases are fixedly welded to the two ends of the top of the cross beam, and abutting mechanisms are arranged on the first mounting base, the second reinforcing oblique beam, the second mounting base and the third mounting bases; the two door type supporting frames are matched with the connecting beam, installation in a hole is convenient, prestress can be applied to the contact position of the pipe piece through the jack, supporting is more stable, safety in the construction process is guaranteed, and after using is finished, dismounting is convenient, and repeated using on other projects is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to a tunnel construction technical field, especially relate to a reusable assembly type tunnel safety prestress support. BACKGROUND

[0002] The connecting passage is a transverse passage arranged between two subway tunnels and serves for passenger safety evacuation, fire prevention and fire fighting. Before the shield interval connecting passage is excavated, the segment needs to be broken first. During the opening of the hole, there is a risk of water and sand gushing from the working face and stratum collapse. In order to ensure that the segment is not damaged by sudden stress when it collapses, the safety of the operating personnel and the integrity of the tunnel structure are guaranteed. Generally, the method of increasing the internal support of the segment is adopted to increase the overall stiffness of the segment.

[0003] The traditional segment support frame directly uses a steel blank to be welded to support the segment, which is used once and causes waste of raw materials. Moreover, it is not convenient for disassembly and assembly in the later period. Therefore, the reusable assembly type tunnel safety prestress support is proposed. UTILITY MODEL CONTENT

[0004] The utility model aims to provide a reusable assembly type tunnel safety prestress support, so as to solve or at least alleviate one or more of the above problems and other problems in the prior art.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following main technical scheme:

[0006] A reusable assembly type tunnel safety prestress support, comprising a portal support frame, the portal support frame is provided with two groups, two groups the portal support frame between through the connecting beam can detachable connection.

[0007] The portal support frame is provided with a plurality of abutting mechanisms capable of supporting the segment in the tunnel.

[0008] In the reusable assembly type tunnel safety prestress support according to the utility model, the portal support frame comprises a cross beam, support columns are fixedly welded at both ends of the cross beam, a first mounting seat is fixedly welded on the support column, a second reinforcing inclined beam is fixedly welded between the first mounting seat and the support column, a second mounting seat is fixedly welded at the upper end of the cross beam, third mounting seats are fixedly welded at the top of both ends of the cross beam, the abutting mechanisms are arranged on the first mounting seat, the second reinforcing inclined beam, the second mounting seat and the third mounting seat.

[0009] In the reusable assembly type tunnel safety prestress support according to the utility model, the abutting mechanism is provided as a jack.

[0010] The first reinforcing inclined beam is fixedly welded between the supporting column and the cross beam.

[0011] The third reinforcing inclined beam is fixedly welded between the third mounting seat and the cross beam.

[0012] The connecting beams are provided with five connecting beams, and the connecting beams and the portal support frame are fixedly connected through bolts.

[0013] The third mounting seat is fixedly welded between the third mounting seat and the cross beam.

[0014] The utility model at least has following beneficial effect:

[0015] The utility model discloses a kind of reusable assembly type tunnel safety prestress support, which is characterized by the following technical solutions.

[0016] The first reinforcing inclined beam is fixedly welded between the supporting column and the cross beam. BRIEF DESCRIPTION OF DRAWINGS

[0017] The accompanying drawings, which are incorporated herein by reference, are used to provide further understanding of the present application, and constitute a part of the present application.

[0018] Fig. 1 Fig. 1 is a structural schematic diagram of the reusable assembly type tunnel safety prestress support of the utility model;

[0019] Fig. 2 Fig. 2 is a structural schematic diagram of the portal support frame of the utility model;

[0020] Fig. 3 Fig. 3 is a structural schematic diagram of the utility model for supporting segment.

[0021] REFERENCE SIGNS

[0022] 1, door type support frame; 101, crossbeam; 102, support column; 103, first reinforcing inclined beam; 104, first mounting seat; 105, second reinforcing inclined beam; 106, second mounting seat; 107, third mounting seat; 108, third reinforcing inclined beam; 2, connecting beam; 3, abutting mechanism; 301, jack; 302, antiskid rubber pad. DETAILED DESCRIPTION

[0023] The implementation of the present application will be described in detail below with reference to the accompanying drawings and examples, so that the realization process of how the present application applies technical means to solve technical problems and achieve technical effects can be fully understood and implemented.

[0024] Please refer to Figs. 1 to 3 The embodiment of the present application provides a reusable assembled tunnel safety prestressed support, which comprises a door type support frame 1, the door type support frame 1 is provided with two groups, the two groups of door type support frames 1 are detachably connected through a connecting beam 2; in order to ensure the connection strength between the two door type support frames 1, the connecting beam 2 is provided with five, the connecting beam 2 and the door type support frame 1 are fixedly connected through bolts, and the door type support frame 1 is provided with a plurality of abutting mechanisms 3 capable of supporting the duct piece in the tunnel.

[0025] In the embodiment, the door type support frame 1 comprises a crossbeam 101, support columns 102 are fixedly welded at both ends of the crossbeam 101, a first mounting seat 104 is fixedly welded on the support column 102, a second reinforcing inclined beam 105 is fixedly welded between the first mounting seat 104 and the support column 102, a second mounting seat 106 is fixedly welded at the upper end of the crossbeam 101, third mounting seats 107 are fixedly welded at the top of both ends of the crossbeam 101, and the abutting mechanisms 3 are arranged on the first mounting seat 104, the second reinforcing inclined beam 105, the second mounting seat 106 and the third mounting seat 107.

[0026] In the embodiment, the abutting mechanism 3 is a jack 301, and an antiskid rubber pad 302 is arranged at the piston rod end of the jack 301, so that the jack 301 can tightly and stably abut against the duct piece in the tunnel when prestress is applied, sliding is prevented, and the safety of construction is further improved.

[0027] In the embodiment, in order to improve the rigidity and stability of the overall structure of the door type support frame 1, a first reinforcing inclined beam 103 is fixedly welded between the support column 102 and the crossbeam 101.

[0028] In the embodiment, a third reinforcing inclined beam 108 is fixedly welded between the third mounting seat 107 and the crossbeam 101, and the third reinforcing inclined beam 108 can support the third mounting seat 107 at the top of the crossbeam 101, so as to ensure the support strength.

[0029] In this embodiment, a space is left between the two third mounting seats 107 for the wind bag to pass through, which allows the wind bag to pass through the support structure without obstacles, without the need for additional supports or suspension devices to support the wind bag, which not only simplifies the layout inside the tunnel and reduces potential obstacles, but also reduces the difficulty and cost of construction.

[0030] In use, the portal support frame 1 and the connecting beam 2 are transported to the designated location, and then assembled using bolts. The jacks 301 can apply the required prestress to the segments inside the tunnel by adjusting the extension length of the piston rod. After construction is completed, the support frame can be easily disassembled and reassembled for use in other tunnel projects.

[0031] The above description shows and describes several preferred embodiments of the present application, but as previously mentioned, it should be understood that the present application is not limited to the forms disclosed herein, and should not be considered as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the application conceived herein, by the above teachings or related technical or knowledge. Any modification and change made by those skilled in the art without departing from the spirit and scope of the present application shall be within the scope of protection of the appended claims of the present application.

Claims

1. A reusable, modular tunnel safety prestressed support, characterized in that, It includes a portal frame (1), which is provided in two sets, and the two sets of portal frames (1) are detachably connected by a connecting beam (2); The portal support frame (1) is equipped with several clamping mechanisms (3) that can support the tunnel segments inside the tunnel.

2. The reusable assembled tunnel safety prestressed support according to claim 1, characterized in that: The portal frame (1) includes a crossbeam (101), with support columns (102) fixedly welded to both ends of the crossbeam (101). A first mounting seat (104) is fixedly welded to the support column (102). A second reinforcing inclined beam (105) is fixedly welded between the first mounting seat (104) and the support column (102). A second mounting seat (106) is fixedly welded to the upper end of the crossbeam (101). A third mounting seat (107) is fixedly welded to both ends of the top of the crossbeam (101). The clamping mechanism (3) is provided on the first mounting seat (104), the second reinforcing inclined beam (105), the second mounting seat (106), and the third mounting seat (107).

3. A reusable, modular tunnel safety prestressed support according to claim 2, characterized in that: The clamping mechanism (3) is configured as a jack (301).

4. A reusable, modular tunnel safety prestressed support according to claim 3, characterized in that: The piston rod end of the jack (301) is provided with an anti-slip rubber pad (302).

5. A reusable, modular tunnel safety prestressed support according to claim 4, characterized in that: A first reinforcing diagonal beam (103) is fixedly welded between the support column (102) and the crossbeam (101).

6. A reusable, modular tunnel safety prestressed support according to claim 5, characterized in that: A third reinforcing diagonal beam (108) is fixedly welded between the third mounting base (107) and the crossbeam (101).

7. A reusable, modular tunnel safety prestressed support according to claim 6, characterized in that: Five connecting beams (2) are provided, and the connecting beams (2) are fixedly connected to the portal support frame (1) by bolts.

8. A reusable, modular tunnel safety prestressed support according to claim 7, characterized in that: A space is left between the two third mounting bases (107) for the air bag to pass through.

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