CN219034772U

CN219034772U - Support grid steel frame for tunnel construction

Info

Publication number: CN219034772U
Application number: CN202320222893.9U
Authority: CN
Inventors: 蔡志勇; 杨祥亮; 刘腾; 孔恒; 吕金彪; 李星晨; 王涛; 张亮; 杨海健; 陈进财; 张晟源; 高枫; 郑文宇; 秦东平; 郑立钢; 张飞; 陈恺; 杨扬; 甄海平
Original assignee: Beijing Municipal Construction Co Ltd
Current assignee: Beijing Municipal Construction Co Ltd
Priority date: 2023-02-03
Filing date: 2023-02-03
Publication date: 2023-05-16
Anticipated expiration: 2033-02-03

Abstract

The utility model belongs to the field of tunnel construction, in particular to a support grid steel frame for tunnel construction, which comprises a base, wherein two groups of bases are arranged, the tops of the two groups of bases are fixedly connected with fixed columns, the tops of the fixed columns are connected with telescopic columns in a sliding manner, the tops of the two groups of telescopic columns are fixedly connected with a cross beam, and the tops of the cross beams are fixedly connected with arc plates; install at the crossbeam top through the arc, fix the base at ground through instrument such as ground nail again, then through pulling the support arm, make the support arm support flexible post go up and down, until arc top supports tunnel top inner wall, then pass the hole that the fixed section of thick bamboo aligns through the gim peg, run through in the fixed section of thick bamboo again, make the support arm top fixed, be triangular structure between flexible post, support arm and the crossbeam three, guarantee that the crossbeam is stable, this support grid steelframe can be adjusted according to tunnel height, need not the cutting concatenation, reduce support grid steelframe installation degree of difficulty, improve support grid steelframe installation effectiveness.

Description

Support grid steel frame for tunnel construction

Technical Field

The utility model relates to the field of tunnel construction, in particular to a supporting grid steel frame for tunnel construction.

Background

When the tunnel construction excavates, the inner wall of the tunnel hole to be excavated is required to be supported by using the supporting grid steel frame, the tunnel hole is prevented from collapsing, the supporting grid steel frame is of a steel structure, the top is arc-shaped, and is matched with the inner wall of the top of the tunnel hole, and the whole shape is arch-shaped.

The existing support grid steel frame mainly comprises an arc-shaped top plate, two groups of support columns and a base, wherein the two groups of support columns are symmetrically and fixedly connected to the bottom of the top plate through bolts and support the top plate, so that the top plate is tightly pressed with the top of a tunnel, and the base increases the stability of the support columns and the ground.

The current support grid steelframe can not be adjusted according to tunnel inner wall actual height, and the support grid steelframe needs to cut the concatenation according to the tunnel of co-altitude, increases the support grid steelframe installation degree of difficulty, reduces support grid steelframe installation effectiveness, consequently, proposes a support grid steelframe for tunnel construction to above-mentioned problem.

Disclosure of Invention

In order to overcome the defects in the prior art and solve the problems, the utility model provides a support grid steel frame for tunnel construction.

The technical scheme adopted for solving the technical problems is as follows: the utility model discloses a support grid steel frame for tunnel construction, which comprises a base, wherein two groups of bases are arranged, the tops of the two groups of bases are fixedly connected with fixing columns, the tops of the fixing columns are connected with telescopic columns in a sliding manner, the tops of the two groups of telescopic columns are fixedly connected with a cross beam, the tops of the cross beam are fixedly connected with an arc plate, the bottom of the cross beam is provided with a rectangular opening, the side wall of the rectangular opening is provided with a plurality of groups of holes, the tops of the side walls of the two groups of fixing columns are fixedly connected with shaft seats, the two groups of shaft seats are respectively and rotatably connected with a supporting arm, the other ends of the two groups of supporting arms are respectively and fixedly connected with a fixing cylinder, the two groups of fixing cylinders are respectively and fixedly connected with the rectangular opening, two groups of fixing bolts penetrate through the holes, and the two groups of fixing bolts penetrate through the two groups of fixing cylinders respectively.

Preferably, the two groups of shaft seats are symmetrical with each other, and the two groups of support arms are symmetrical with each other.

Preferably, a plurality of groups of supporting plates are fixedly connected to the inner wall of the arc-shaped plate, and the shape of each group of supporting plates is V-shaped.

Preferably, two ends of the arc-shaped plate are fixedly connected to the tops of two ends of the cross beam through bolts respectively.

Preferably, the top of each of the two groups of fixing columns is provided with a sliding groove, springs are fixedly connected in the sliding grooves, one ends of the springs are fixedly connected to the bottoms of the sliding grooves, and the other ends of the springs are fixedly connected to the bottoms of the telescopic columns.

Preferably, the bottoms of the two groups of fixing columns are fixedly connected with shock absorbers, and the bottoms of the two groups of shock absorbers are fixedly connected with bases.

The utility model has the advantages that:

according to the utility model, the arc-shaped plate is arranged at the top of the cross beam, the base is fixed on the ground through tools such as ground nails, and then the support arm is pulled to support the telescopic column to lift until the top of the arc-shaped plate butts against the inner wall of the top of the tunnel, then the arc-shaped plate passes through the aligned holes of the fixing cylinder and penetrates through the fixing cylinder, so that the top of the support arm is fixed, the telescopic column, the support arm and the cross beam are in a triangular structure, the stability of the cross beam is ensured, the support grid steel frame can be adjusted according to the height of the tunnel, cutting and splicing are not needed, the installation difficulty of the support grid steel frame is reduced, and the installation efficiency of the support grid steel frame is improved.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained from these drawings without inventive faculty for a person skilled in the art.

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic view of an arcuate plate mounting structure of the present utility model;

FIG. 3 is a schematic cross-sectional view of the present utility model;

fig. 4 is a schematic view of a support arm structure according to the present utility model.

In the figure: 1. an arc-shaped plate; 2. a support plate; 3. a shaft seat; 4. a cross beam; 5. a rectangular opening; 6. a hole; 7. a support arm; 8. a fixed cylinder; 9. a telescopic column; 10. fixing the column; 11. a spring; 12. a base; 13. a fixing bolt; 14. a damper; 15. and a sliding groove.

Detailed Description

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

Referring to fig. 1-4, a supporting grid steel frame for tunnel construction includes a base 12, wherein two groups of the base 12 are provided, the tops of the two groups of the base 12 are fixedly connected with a fixing column 10, the tops of the fixing columns 10 are slidably connected with a telescopic column 9, the tops of the two groups of the telescopic columns 9 are fixedly connected with a cross beam 4, the tops of the cross beam 4 are fixedly connected with an arc plate 1, a rectangular opening 5 is formed in the bottom of the cross beam 4, a plurality of groups of holes 6 are formed in the side wall of the rectangular opening 5, shaft seats 3 are fixedly connected to the tops of the side walls of the two groups of the fixing columns 10, supporting arms 7 are rotatably connected in the two groups of the shaft seats 3, fixing cylinders 8 are fixedly connected to one ends of the two groups of the supporting arms 7 far from the shaft seats 3, the two groups of the fixing cylinders 8 are slidably connected in the rectangular opening 5, two groups of fixing bolts 13 penetrate through the holes 6, and the two groups of fixing bolts 13 penetrate through the two groups of fixing cylinders 8 respectively; during operation, current support grid steelframe can not be adjusted according to tunnel inner wall actual height, support grid steelframe needs to cut the concatenation according to the tunnel of co-altitude, increase support grid steelframe installation degree of difficulty, reduce support grid steelframe installation effectiveness, support grid steelframe is through using the bolt to install arc 1 bottom both ends at crossbeam 4 tops, fix base 12 through instruments such as ground screw on ground again, then through pulling support arm 7, the fixed cylinder 8 of support arm 7 top rigid coupling can slide in rectangle mouth 5, make support arm 7 support telescopic column 9 lift, until arc 1 top supports tunnel top inner wall, then pass fixed cylinder 8 through dead bolt 13 and align hole 6, run through in fixed cylinder 8 again, make support arm 7 top fixed, be triangular structure between telescopic column 9, support arm 7 and the crossbeam 4 three, guarantee that crossbeam 4 is stable, the structure in the support grid steelframe is steel construction, make support grid steelframe bearing capacity strong, this support grid steelframe can adjust according to tunnel height, need not to cut the concatenation, reduce support grid installation degree of difficulty, improve support grid installation effectiveness.

The two groups of shaft seats 3 are symmetrical with each other, and the two groups of supporting arms 7 are symmetrical with each other; when the device works, the two groups of shaft seats 3 are positioned at the bottom of the cross beam 4, and the two groups of supporting arms 7 are used for jointly fixing and supporting the cross beam 4 and the arc-shaped plate 1.

A plurality of groups of support plates 2 are fixedly connected to the inner wall of the arc-shaped plate 1, and the shape of each group of support plates 2 is V-shaped; during operation, adopt backup pad 2 to support in arc 1 inside, thereby both reduced arc 1 steel quantity and reduced arc 1 weight and conveniently installed, can guarantee arc 1 stability again through making forming the triangle structure between backup pad 2 and the arc 1.

The two ends of the arc-shaped plate 1 are fixedly connected to the tops of the two ends of the cross beam 4 through bolts respectively; during operation, the arc-shaped plate 1 and the cross beam 4 are fixed through bolts, and the arc-shaped plate 1 and the cross beam 4 are convenient to install and detach.

The tops of the two groups of fixed columns 10 are provided with sliding grooves 15, springs 11 are fixedly connected in the sliding grooves 15, one end of each spring 11 is fixedly connected to the bottom of each sliding groove 15, and the other end of each spring 11 is fixedly connected to the bottom of each telescopic column 9; when the support arm 7 is in operation, the spring 11 can prevent the telescopic column 9 from greatly ascending and descending when the support arm 7 is adjusted, so that accidents are caused by instability in the installation process of the support grid steel frame.

The bottoms of the two groups of the fixed columns 10 are fixedly connected with shock absorbers 14, and the bottoms of the two groups of the shock absorbers 14 are fixedly connected with bases 12; in operation, the shock absorber 14 can reduce the influence of ground vibration on the fixed column 10, thereby reducing the vibration to which the support grid steel frame is subjected and prolonging the service life of the support grid steel frame.

The working principle is that the prior support grid steel frame can not be adjusted according to the actual height of the inner wall of a tunnel, the support grid steel frame is required to be cut and spliced according to tunnels with different heights, the installation difficulty of the support grid steel frame is increased, the installation efficiency of the support grid steel frame is reduced, the support grid steel frame is used for installing two ends at the bottom of an arc plate 1 at the top of a cross beam 4 through using bolts, a base 12 is fixed on the ground through tools such as ground nails, then a fixed cylinder 8 fixedly connected with the top of the support arm 7 can slide in a rectangular opening 5 through pulling a support arm 7, the support arm 7 supports a telescopic column 9 to lift until the top of the arc plate 1 butts against the inner wall of the top of the tunnel, then the arc plate passes through an aligned hole 6 of the fixed cylinder 8 through a fixed bolt 13 and then penetrates through the fixed cylinder 8, the top of the support arm 7 is fixed, the top of the support arm 7 is made to be in a triangular structure among the telescopic column 9, the support arm 7 and the cross beam 4, the beam 4 is ensured to be stable, the structure in the supporting grid steel frame is a steel structure, the supporting capacity of the supporting grid steel frame is high, the supporting plate 2 is adopted to support the inside of the arc plate 1, the steel consumption of the arc plate 1 is reduced, the weight of the arc plate 1 is reduced, the installation is convenient, the triangular structure is formed between the supporting plate 2 and the arc plate 1, the stability of the arc plate 1 is ensured, the spring 11 can prevent the telescopic column 9 from greatly ascending and descending when the supporting arm 7 is regulated, the accident is caused in the installation process of the supporting grid steel frame, the shock absorber 14 can reduce the influence of the ground shock on the fixed column 10, thereby reducing the shock to the supporting grid steel frame, prolonging the service life of the supporting grid steel frame, regulating the supporting grid steel frame according to the tunnel height, avoiding cutting and splicing, reducing the installation difficulty of the supporting grid steel frame, and the installation efficiency of the support grid steel frame is improved.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims.

Claims

1. The utility model provides a tunnel construction is with supporting grid steelframe, includes base (12), its characterized in that: base (12) are provided with two sets of, two sets of base (12) top rigid coupling has fixed column (10), fixed column (10) top sliding connection has telescopic column (9), two sets of telescopic column (9) top rigid coupling has crossbeam (4), crossbeam (4) top rigid coupling has arc (1), rectangle mouth (5) have been seted up to crossbeam (4) bottom, multiunit hole (6) have been seted up to rectangle mouth (5) lateral wall, two sets of fixed column (10) lateral wall top all rigid coupling has axle bed (3), two sets of all rotate in axle bed (3) and be connected with support arm (7), two sets of support arm (7) other end all sliding connection in rectangle mouth (5), two sets of support arm (7) are kept away from in the one end of axle bed (3) all rigid coupling has fixed cylinder (8), two sets of fixed cylinder (8) sliding connection in rectangle mouth (5), run through in hole (6) have two sets of fixed pegs (13), two sets of fixed pegs (13) run through respectively in two sets of fixed cylinders (8).

2. The supporting grid steel frame for tunnel construction according to claim 1, wherein: the two groups of shaft seats (3) are symmetrical, and the two groups of supporting arms (7) are symmetrical.

3. The supporting grid steel frame for tunnel construction according to claim 2, wherein: the inner wall of the arc-shaped plate (1) is fixedly connected with a plurality of groups of supporting plates (2), and the shape of each group of supporting plates (2) is V-shaped.

4. A supporting grid steel frame for tunnel construction according to claim 3, wherein: the two ends of the arc-shaped plate (1) are fixedly connected to the tops of the two ends of the cross beam (4) through bolts respectively.

5. The supporting grid steel frame for tunnel construction according to claim 4, wherein: two sets of fixed column (10) tops have all seted up spout (15), all rigid coupling has spring (11) in spout (15), spring (11) one end rigid coupling is in spout (15) bottom, and spring (11) other end rigid coupling is in telescopic column (9) bottom.

6. The supporting grid steel frame for tunnel construction according to claim 5, wherein: the bottoms of the two groups of fixing columns (10) are fixedly connected with shock absorbers (14), and the bottoms of the two groups of shock absorbers (14) are fixedly connected with bases (12).