CN218150982U

CN218150982U - Umbrella type middle partition wall supporting structure for controlling tunnel vault integral settlement

Info

Publication number: CN218150982U
Application number: CN202222613212.XU
Authority: CN
Inventors: 任新; 汪镇; 侯代英; 张晓强
Original assignee: Lanzhou Jiaotong University
Current assignee: Lanzhou Jiaotong University
Priority date: 2022-09-30
Filing date: 2022-09-30
Publication date: 2022-12-27
Anticipated expiration: 2032-09-30

Abstract

The utility model discloses an umbrella type middle bulkhead supporting construction that control tunnel vault was whole to subside relates to tunnel engineering construction technical field, and this umbrella type middle bulkhead supporting construction includes base, support steelframe and supporting mechanism, support the lower extreme of steelframe and install the first linkage block of a plurality of, the pedestal mounting is subaerial, the vertical first support column that is provided with in top of base, the vertical second support column that is provided with in top of first support column, first connecting seat is installed to the upper end of second support column, first connecting seat passes through bolt erection joint with the first linkage block that supports steelframe lower extreme central point and puts, the utility model discloses a steel structural component assembles "umbrella" shape vertical middle bulkhead, has reduced the interim support anchor and has spouted and has demolishd work load, the utility model discloses utilize the turning block to drive the screw thread post and rotate, realize the flexible of an internal thread section of thick bamboo and screw thread post, be convenient for internal thread section of thick bamboo and screw thread post to support the support steelframe of different curvatures, improve the application scope of support.

Description

Umbrella type middle partition wall supporting structure for controlling tunnel vault integral settlement

Technical Field

The utility model relates to a tunnel engineering construction technical field specifically is an umbrella type median septum supporting construction that control tunnel vault is whole to subside.

Background

Along with the continuous acceleration of infrastructures such as high-speed railways and highways in western regions, loess tunnel projects are built more and more in loess plateau gullies and bridge loess hills regions, and tunnel sections are enlarged continuously. The loess tunnel is usually constructed by a three-step method, a CD method, a CRD method, a double-side-wall pit guiding method and the like, and different construction methods are usually selected according to the stratum condition, the section size and the like of the tunnel in the construction. At present, the tunnel crossing area condition is more and more complex, new requirements are provided for surface subsidence control, and the construction period is more urgent. The traditional 'CD' method excavation sequence is as follows: leading upper pilot hole → leading lower pilot hole → leading upper pilot hole → leading lower pilot hole. When pilot tunnel excavation is strutted under this excavation mode exists, machinery can't reach the pilot tunnel, goes up the pilot tunnel and uses manual excavation as the main, and the arc center bulkhead concatenation speed is slow, demolish the difficulty, work load is big, the efficiency of construction is low, the progress is slow. Although the construction speed of the traditional three-step construction method is high, the integral settlement of the arch part is large, and the deformation control of the tunnel is not facilitated.

Aiming at the problems, an improved umbrella-type middle partition wall supporting structure for controlling the integral settlement of the tunnel vault is designed at present.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an umbrella type middle bulkhead supporting construction that control tunnel vault is whole to subsides to solve the problem that provides among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides an umbrella type middle bulkhead supporting construction that control tunnel vault is whole to subside, includes base, support steelframe and supporting mechanism, the upper end of supporting the steelframe is hugged closely at the tunnel top, the first linkage block of a plurality of is installed to the lower extreme of supporting the steelframe, the pedestal mounting is subaerial, the vertical first support column that is provided with in top of base, first flange connection dish is all installed at the both ends of first support column, first flange connection dish and the base of first support column lower extreme pass through bolt erection joint, the vertical second support column that is provided with in top of first support column, second flange connection dish is installed to the lower extreme of second support column, second flange connection dish passes through bolt erection joint with the first flange connection dish of first support column upper end, first connecting seat is installed to the upper end of second support column, first connecting seat passes through bolt erection joint with the first linkage block that supports steelframe lower extreme central point and put.

The supporting mechanisms are arranged on two sides of the second supporting column and used for obliquely supporting the supporting steel frames on two sides of the second supporting column and adjusting the length according to the curvature of the supporting steel frames.

As a further aspect of the present invention: the supporting mechanism comprises two second connecting blocks which are symmetrically arranged, the second connecting blocks are installed at the upper end of a second flange connecting disc, a rotating block is obliquely arranged between the second connecting blocks and a supporting steel frame, threaded columns are installed at two ends of the rotating block, the side wall of each threaded column is connected with an internal thread cylinder through thread rotation, one end, far away from the rotating block, of each internal thread cylinder is provided with a second connecting seat, the second connecting seat below the rotating block is connected with the second connecting blocks through rotating of a rotating shaft, and the second connecting seats above the rotating block are connected with the first connecting blocks on two sides of the second supporting columns through rotating of a rotating shaft.

As a further aspect of the present invention: and support rib plates are arranged at the lower end of the side wall of the first support column and the lower end of the side wall of the second support column.

As a further aspect of the present invention: the lateral wall of turning block is the circumference array and has seted up the jack of a plurality of the staff of being convenient for uses the iron rod to rotate the turning block.

As a further aspect of the present invention: and ribs for improving the structural strength of the internal thread cylinder are arranged on the side wall of the internal thread cylinder.

As a further aspect of the present invention: and the second connecting block is arranged on the second flange connecting disc and the second supporting column in a welding mode.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a steel structural component assembles "umbrella" shape vertical middle bulkhead, has reduced the temporary support anchor and has spouted and demolish work load, and environmental protection and material saving have guaranteed that arch springing and stand are stable, have reduced construction cost.

2. The utility model discloses be provided with supporting mechanism, utilize the turning block to drive the screw thread post and rotate to make the screw thread post drive the removal of an internal thread section of thick bamboo, realize the flexible of an internal thread section of thick bamboo and screw thread post, be convenient for an internal thread section of thick bamboo and screw thread post support the steelframe of support of different curvatures, improve the application scope of support, and when the installation, the staff of being convenient for adjusts, can improve the installation effectiveness of second connecting seat and second connecting block, second connecting seat and first connecting block, and then improve the support efficiency who supports the steelframe.

Drawings

Fig. 1 is a schematic diagram of the three-dimensional structure of the present invention.

Fig. 2 is a schematic structural view of the second support column of the present invention.

Fig. 3 is a schematic structural diagram of the middle supporting mechanism of the present invention.

Wherein: 1. a base; 2. a first flange connection disc; 3. a first support column; 4. a second flange connection disc; 5. a second support column; 6. a jack; 7. a first connecting seat; 8. supporting the steel frame; 9. a first connection block; 10. a threaded post; 11. rotating the block; 12. an internal thread cylinder; 13. a second connecting seat; 14. a second connecting block; 15. supporting the rib plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Please refer to fig. 1-3, in an embodiment of the present invention, an umbrella type middle partition supporting structure for controlling the overall settlement of a tunnel vault includes a base 1, a supporting steel frame 8 and a supporting mechanism, the upper end of the supporting steel frame 8 is tightly attached to the top of a tunnel, a plurality of first connecting blocks 9 are installed at the lower end of the supporting steel frame 8, the base 1 is installed on the ground, a first supporting column 3 is vertically arranged above the base 1, first flange connection discs 2 are installed at both ends of the first supporting column 3, the first flange connection discs 2 at the lower end of the first supporting column 3 are connected with the base 1 through bolt installation, a second supporting column 5 is vertically arranged above the first supporting column 3, a second flange connection disc 4 is installed at the lower end of the second supporting column 5, the second flange connection discs 4 are connected with the first flange connection discs 2 at the upper end of the first supporting column 3 through bolt installation, a first connection seat 7 is installed at the upper end of the second supporting column 5, a rib plate 15 is installed at the lower end of the side wall of the first connecting seat 7 and the first connecting block 9 at the central position of the lower end of the supporting steel frame 8.

The supporting mechanisms are arranged on two sides of the second supporting column 5 and used for obliquely supporting the supporting steel frames 8 on two sides of the second supporting column 5 and adjusting the length according to the curvature of the supporting steel frames 8.

The supporting mechanism includes the second connecting block 14 that two symmetries set up, the upper end at second flange connection dish 4 is installed to second connecting block 14, the slope is provided with turning block 11 between second connecting block 14 and the support steelframe 8, screw thread post 10 is all installed at the both ends of turning block 11, the lateral wall of screw thread post 10 is connected with interior thread cylinder 12 through the screw thread rotation, interior thread cylinder 12 is kept away from the one end of turning block 11 and is installed second connecting seat 13, second connecting seat 13 and second connecting block 14 of turning block 11 below are rotated through the pivot and are connected, second connecting seat 13 of turning block 11 top is rotated through the pivot with the first connecting block 9 of second support column 5 both sides and is connected, it sets up a plurality of staff of and uses the jack 6 that the iron rod rotated turning block 11 to be convenient for the staff on the lateral wall of turning block 11 to be the circumference array.

Supporting mechanism's effect utilizes turning block 11 to drive screw post 10 and rotates, thereby make screw post 10 drive an internal thread section of thick bamboo 12 and remove, realize the flexible of an internal thread section of thick bamboo 12 and screw post 10, be convenient for an internal thread section of thick bamboo 12 and screw post 10 support the support steelframe 8 of different curvatures, improve the application scope who supports, and when the installation, the staff of being convenient for adjusts, can improve second connecting seat 13 and second connecting block 14, the installation effectiveness of second connecting seat 13 and first connecting block 9, and then improve the support effectiveness who supports steelframe 8, convenient to use person uses.

The utility model discloses an umbrella type well next door supporting construction that control tunnel vault is whole to subside, when using, install first flange connection pad 2 of first support column 3 lower extreme on base 1 through the bolt, install second flange connection pad 4 of second support column 5 lower extreme on first flange connection pad 2 of first support column 3 upper end through the bolt, then pass through bolted connection with first connecting seat 7 and the first connecting block 9 that supports 8 central points of steelframe put, then link together second connecting seat 13 and second connecting block 14 of turning block 11 below through the pivot, then with second connecting seat 13 and the 9 joint of first connecting block of turning block 11 top, then rotate turning block 11, turning block 11 drives screw post 10 and rotates, under the effect of screw thread, screw post 10 and interior thread section of thick bamboo 12 stretch out and draw back, thereby make second connecting seat 13 align with first connecting block 9, and be in the same place through rotation axis connection, realize supporting 8 supports the support of steelframe to the tunnel top.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof.

Claims

1. The umbrella type middle partition supporting structure for controlling the integral settlement of the tunnel vault comprises a base (1), a supporting steel frame (8) and a supporting mechanism, wherein the upper end of the supporting steel frame (8) is tightly attached to the top of the tunnel, and a plurality of first connecting blocks (9) are installed at the lower end of the supporting steel frame (8), and is characterized in that the base (1) is installed on the ground, first supporting columns (3) are vertically arranged above the base (1), first flange connection discs (2) are installed at two ends of each first supporting column (3), the first flange connection discs (2) at the lower ends of the first supporting columns (3) are connected with the base (1) through bolts, second supporting columns (5) are vertically arranged above the first supporting columns (3), second flange connection discs (4) are installed at the lower ends of the second supporting columns (5), the second flange connection discs (4) are connected with the first flange connection discs (2) at the upper ends of the first supporting columns (3) through bolts, first connecting seats (7) are installed at the upper ends of the second supporting columns (5), and the first connecting blocks (9) are connected with the central connecting blocks;

the supporting mechanisms are arranged on two sides of the second supporting column (5) and used for obliquely supporting the supporting steel frames (8) on two sides of the second supporting column (5).

2. The umbrella-type middle partition supporting structure for controlling the overall settlement of the tunnel vault according to claim 1, wherein the supporting mechanism comprises two second connecting blocks (14) which are symmetrically arranged, the second connecting blocks (14) are installed at the upper ends of second flange connecting plates (4), rotating blocks (11) are obliquely arranged between the second connecting blocks (14) and a supporting steel frame (8), threaded columns (10) are installed at two ends of each rotating block (11), the side walls of the threaded columns (10) are connected with internal threaded cylinders (12) in a rotating mode through threads, one ends, far away from the rotating blocks (11), of the internal threaded cylinders (12) are provided with second connecting seats (13), the second connecting seats (13) below the rotating blocks (11) are rotatably connected with the second connecting blocks (14) through rotating shafts, and the second connecting seats (13) above the rotating blocks (11) are rotatably connected with first connecting blocks (9) on two sides of the second supporting columns (5) through rotating shafts.

3. The umbrella-type middle partition supporting structure for controlling the integral settlement of the arch top of a tunnel according to claim 1, wherein the lower ends of the side walls of the first supporting columns (3) and the second supporting columns (5) are provided with supporting rib plates (15).

4. The umbrella-type middle partition wall supporting structure for controlling the integral settlement of the arch crown of a tunnel according to claim 2, wherein the side wall of the rotating block (11) is circumferentially provided with a plurality of insertion holes (6) which are convenient for workers to use iron rods to rotate the rotating block (11).

5. The umbrella-type middle partition supporting structure for controlling the overall settlement of a tunnel arch according to claim 2, wherein ribs for improving the structural strength of the internally threaded cylinder (12) are installed on the side wall of the internally threaded cylinder (12).

6. The umbrella-type middle partition supporting structure for controlling the integral settlement of the tunnel vault according to claim 2, wherein the second connecting block (14) is installed on the second flange connecting plate (4) and the second supporting column (5) by welding.