Construction method of a travelling primary branch segment positioning device suitable for tunnels with different inner diameters

Abstract

The present invention discloses a construction method of a traveling primary branch segment positioning device applicable to tunnels with different inner diameters, and the construction method comprises the following steps: installing a positioning device in a tunnel; installing the primary branch corrugated steel plate on the top of the tunnel on the roller arch, wherein the primary branch corrugated plate on the top of the tunnel is in contact with the roller arch through the positioning roller; moving the positioning device to a corresponding position, and supporting the primary branch corrugated plate on the top of the tunnel by using the positioning device to achieve support for the top of the tunnel. The advantages of the present invention are: a simple construction method, and achieving positioning and support for the primary branch corrugated plate on the top of the tunnel.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel support, and in particular to a construction method of a traveling primary branch segment positioning device suitable for tunnels with different inner diameters. Background Art

[0002] With the rapid development of modern transportation facilities, various tunnel construction projects are springing up, such as urban subway tunnels and western mountain tunnels. In the support design of mountain tunnel excavation construction, the prefabricated steel corrugated plate support structure can give full play to the advantages of prefabricated rapid support construction. However, in actual application, due to the limitations of the surrounding rock geological conditions, tunnel excavation construction is often not excavated into a hole at one time, but adopts a step method of segmented and layered excavation mode. In the support process, it is necessary to install support corrugated plates in layers according to the specific layered excavation steps. For example, in the commonly used three-step method construction process, it is necessary to install corrugated plates on the upper step, middle step and lower step excavation sections in turn. However, due to the heavy weight of the corrugated plate itself, it is difficult to quickly locate and install it during the construction process. In addition, the assembly interval between the upper step corrugated plate and the middle step corrugated plate is often long, and the arch foot of the upper step corrugated plate is suspended for a long time, which makes the upper step corrugated plate prone to obvious displacement and deformation, seriously affecting the support effect of the upper step corrugated plate and the overall splicing accuracy of the corrugated plate. In addition, the phenomenon of diameter change will be encountered during the tunnel excavation and support process. In order to facilitate the handling and positioning of corrugated plates with different inner diameters, and at the same time have a temporary support function, new requirements are placed on construction equipment. Summary of the invention

[0003] The purpose of the present invention is to provide a construction method of a movable primary branch segment positioning device suitable for tunnels with different inner diameters based on the above-mentioned deficiencies of the prior art, and to achieve positioning and support of the primary branch corrugated plate on the top of the tunnel by setting a positioning device.

[0004] The purpose of the present invention is achieved by the following technical solutions:

[0005] A construction method for a traveling primary branch segment positioning device applicable to tunnels with different inner diameters, characterized in that the construction method comprises the following steps:

[0006] (S1) Installing a positioning device in the tunnel; wherein the positioning device includes a top supporting structure and a bottom moving structure, the top supporting structure includes a supporting arch, an inner diameter adjustment column, an arch supporting beam, a roller arch and a positioning roller, the supporting arch is arranged transversely and a plurality of the supporting arches are arranged at intervals in the longitudinal direction, the supporting arch is installed on the bottom moving structure, a plurality of the inner diameter adjustment columns are arranged along the arc length direction of the supporting arch, the inner diameter adjustment columns in the same longitudinal direction are connected by the arch supporting beam, the arch supporting beams are connected by the roller arch and the roller arch and the arch supporting beam are movably connected, each of the roller arches is installed with a positioning roller and the positioning roller rotates freely around the roller arch; the bottom moving structure is installed on the track plate and can move along the length direction of the track plate, and the laying position of the track plate is determined by the installation position of the initial corrugated plate on the top of the tunnel;

[0007] (S2) installing the tunnel top primary supporting corrugated plate on the roller arch, wherein the tunnel top primary supporting corrugated plate is in contact with the roller arch through the positioning roller; wherein the distance from the supporting arch beam to the center of the supporting arch circle is controlled by adjusting the height of the inner diameter adjustment column to adapt to the diameter of the tunnel top primary supporting corrugated plate with different inner diameters and arcs; and the tunnel top primary supporting corrugated plate can be slid forward and backward on the top supporting structure by rotating the positioning roller to adjust the position of the tunnel top primary supporting corrugated plate;

[0008] (S3) Moving the positioning device to a corresponding position, and using the positioning device to support the initial corrugated plate on the top of the tunnel to achieve support for the top of the tunnel.

[0009] The bottom movable structure includes a liftable column, a supporting beam, an inclination adjustment column and an inclination adjustment beam. The liftable columns are provided in three groups and each group of the liftable columns includes two liftable columns arranged opposite to each other. The tops of the liftable columns on the same side of the three groups of liftable columns are connected by the supporting beam. The top of each of the two ends of the supporting beam is provided with an inclination adjustment column, and the top of the inclination adjustment column is movably connected to the bottom of the inclination adjustment beam. The supporting arch of the top supporting structure is installed on the inclination adjustment beam, and the inclination adjustment beam is installed with an inclination display device.

[0010] A sliding roller is provided at the bottom of the liftable column, and the sliding roller is mounted on the track plate; a brake plate is provided on the sliding roller.

[0011] The steps of moving the positioning device from the lower step or the middle step to the upper step are: retracting the liftable column at the front to the height of the upper step, driving the bottom moving structure to move forward on the track plate until the liftable column at the front moves to a preset position on the upper step, arranging a group of the track plates on the upper step directly below the liftable column at the front, and then extending the liftable column at the front to support it on the track plate.

[0012] After the liftable column at the front is supported on the track plate on the upper step, the liftable column at the middle is retracted to the height of the upper step, and the liftable columns at the front and rear are driven forward on the track plate until the liftable column at the middle reaches a preset position on the upper step, and another group of track plates is arranged on the upper step directly below the liftable column at the middle, and then the liftable column at the middle is extended to support the group of track plates.

[0013] After the liftable columns in the middle are supported on the track plate on the upper step, the liftable columns in the rear are retracted to the height of the upper step, and the liftable columns in the front and middle are driven forward on the track plate until the liftable columns in the rear reach a preset position on the upper step, and another group of the track plates are arranged on the upper step directly below the liftable columns in the rear, and then the liftable columns in the rear are extended to support themselves on the group of track plates.

[0014] A connecting ball is arranged at the top of the inclination adjustment column, and a spherical connecting groove matched with the connecting ball is arranged at the bottom of the inclination adjustment cross beam, and the connecting ball can rotate freely in the spherical connecting groove.

[0015] The supporting crossbeam is provided with supporting oblique arches, wherein the number of the supporting oblique arches is two, and the two ends of the supporting oblique arches are respectively installed at the diagonal positions of the two supporting crossbeams, and an X-shaped structure is formed between the two supporting oblique arches.

[0016] When installing the initial corrugated plate on the top of the tunnel, first lay a panel that can adapt to the arch of the roller on the outside of the positioning roller, and then place the initial corrugated plate on the top of the tunnel on the panel to make the initial corrugated plate on the top of the tunnel fully contact with the positioning roller.

[0017] A notch for placing the sliding roller is provided on the top of the track plate, and a clamping plate and a clamping slot matched with the clamping plate are respectively provided at both ends of the track plate, and a limit rod and a flippable limit plate are respectively provided at both ends of the side of the track plate, and the limit plate is connected to the track plate through a rotating shaft, and a limit groove matched with the limit rod is provided on the top of the limit plate; the track plate is lengthened by inserting the clamping plate on one track plate into the clamping slot on another track plate; the track plate is fixed by flipping the limit plate on one track plate so that the limit groove on the limit plate opens downward and the limit groove matches with the limit rod on the other track plate.

[0018] The invention has the advantages of simple construction method and realization of positioning and supporting of the initial corrugated plate on the tunnel top. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a structural diagram of the positioning device of the present invention;

[0020] Figure 2 It is a schematic diagram of the connection between the inclination angle adjustment column and the inclination angle adjustment beam of the present invention;

[0021] Figure 3 It is a structural diagram of the track plate of the present invention;

[0022] Figure 4 It is a connection schematic diagram of the track plate of the present invention. DETAILED DESCRIPTION

[0023] The features of the present invention and other related features are further described in detail below through embodiments in conjunction with the accompanying drawings to facilitate understanding by those skilled in the art:

[0024] like Figure 1-4 As shown in the figure, marks 1-21 respectively represent: liftable column 1, supporting beam 2, inclination adjustment column 3, connecting ball 4, supporting inclined arch 5, inclination adjustment beam 6, roller arch 7, positioning roller 8, sliding roller 9, track plate 10, supporting arch 11, supporting arch beam 12, inner diameter adjustment column 13, spherical connecting groove 14, notch 15, clamping plate 16, clamping groove 17, limit rod 18, limit groove 19, limit plate 20, rotating shaft 21.

[0025] Example: Figure 1-4 As shown, this embodiment relates to a construction method of a traveling primary branch segment positioning device applicable to tunnels with different inner diameters, and the construction method comprises the following steps:

[0026] (S1) Install a positioning device in the tunnel, wherein the positioning device includes a top supporting structure and a bottom moving structure, the top supporting structure includes a supporting arch 11, an inner diameter adjustment column 13, a supporting arch beam 12, a roller arch 7 and a positioning roller 8, the supporting arch 11 is arranged horizontally and three supporting arches are arranged at intervals along the longitudinal direction, the supporting arch 11 is installed on the bottom moving structure, a plurality of inner diameter adjustment columns 13 are arranged along the arc length direction of the supporting arch 11, the inner diameter adjustment columns 13 in the same longitudinal direction are connected by the supporting arch beam 12, the supporting arch beams 12 are connected by the roller arch 7 and the roller arch 7 and the supporting arch beam 12 are hinged, each roller arch 7 is installed with a positioning roller 8 and the positioning roller 8 rotates freely around the roller arch 7. The bottom moving structure is installed on the track plate 10 and can move along the length direction of the track plate 10, and the laying position of the track plate 10 is determined by the installation position of the corrugated steel on the top of the tunnel.

[0027] like Figure 1 As shown, the bottom movable structure includes a liftable column 1, a supporting beam 2, an inclination adjustment column 3 and an inclination adjustment beam 6. The liftable columns 1 are provided with three groups and each group of liftable columns 1 includes two liftable columns 1 arranged opposite to each other. The tops of the liftable columns 1 on the same side of the three groups of liftable columns 1 are connected by the supporting beam 2. The tops of the two ends of the supporting beam 2 are each provided with an inclination adjustment column 3, and the tops of the inclination adjustment columns 3 and the bottoms of the inclination adjustment beam 6 are movably connected. The supporting arch 11 of the top supporting structure is installed on the inclination adjustment beam 6. The bottom of the liftable column 1 is provided with a sliding roller 9, which is installed on the track plate 10; the sliding roller 9 is provided with a brake plate, which can be locked to fix the sliding roller 9 when it does not need to be moved. In addition, an inclination display device is installed on the inclination adjustment beam 6, and the inclination of the inclination adjustment beam 6 can be controlled by adjusting the relative height of the four inclination adjustment columns 3, that is, the inclination of the primary corrugated plate at the top of the tunnel can be adjusted according to actual engineering requirements.

[0028] like Figure 2 As shown, a connecting ball 4 is provided at the top of the inclination adjustment column 3 , and a spherical connecting groove 14 matching with the connecting ball 4 is provided at the bottom of the inclination adjustment beam 6 , and the connecting ball 4 can rotate freely in the spherical connecting groove 14 .

[0029] like Figure 1 As shown, a supporting inclined arch 5 is provided on the supporting cross beam 2, wherein there are two supporting inclined arches 5, and both ends of the supporting inclined arch 5 are respectively installed at the diagonal positions of the two supporting cross beams 2, and an X-shaped structure is formed between the two supporting inclined arches 2. The supporting inclined arch 5 can increase the clearance at the bottom, and facilitate the operation and construction of the engineering machinery.

[0030] like Figure 3 and Figure 4As shown, a notch 15 for placing the sliding roller 9 is provided at the top of the track plate 10, a clamping plate 16 and a clamping slot 17 matched with the clamping plate 16 are provided at both ends of the track plate 10, a limiting rod 18 and a reversible limiting plate 20 are provided at both ends of the side of the track plate 10, the limiting plate 20 is connected to the track plate 10 through a rotating shaft 21, and a limiting slot 19 matched with the limiting rod 18 is provided at the top of the limiting plate 20. The track plate 20 is lengthened by inserting the clamping plate 16 on one track plate 10 into the clamping slot 17 on another track plate 10; the track plate 20 is fixed by reversing the limiting plate 20 on one track plate 10 so that the limiting slot 19 on the limiting plate 20 opens downward and the limiting slot 19 matches with the limiting rod 18 on the other track plate 10. When the positioning device needs to move a long distance, a complete longer track plate 10 can be laid, and the three groups of liftable columns 1 are on the same track plate 10 at the same time; when the positioning device can only move within a shorter distance, especially when the step method is used for construction, it is necessary to move on different steps, and shorter track plates 10 can be laid for the three groups of liftable columns 1 respectively, so that the three groups of liftable columns 1 move on their own independent track plates 10 respectively. During the forward movement, the track plates 10 passed by each group of liftable columns 1 are repeatedly transported to the front of the sliding roller 9 for laying the front track plate 10.

[0031] When the positioning device needs to move up the steps, for example, the front liftable column 1 goes up the steps first, the front liftable column 1 can be retracted first, the structural stability of the positioning device relies on the support of the middle and rear liftable columns 1, the positioning device is moved forward, so that the front liftable column 1 is moved to a certain position on the upper step, and the track plate 10 is arranged at the corresponding position of the upper step directly below the front liftable column 1, and then the front liftable column 1 is extended so that the front liftable column 1 is supported on the track plate 10 of the upper step; if the middle liftable column 1 still needs to be moved to the upper step, the middle liftable column 1 can be retracted at this time, the structural stability of the positioning device relies on the support of the rear liftable column 1 and the front liftable column 1, and the positioning device is moved forward so that the middle liftable column 1 The liftable column 1 is moved to a certain place on the upper step, and the track plate 10 is arranged at the corresponding position of the upper step directly below the middle liftable column 1, and then the middle liftable column 1 is extended so that the middle liftable column 1 is supported on the track plate 10 of the upper step; if the rear liftable column 1 still needs to be moved to the upper step, the rear liftable column 1 can be retracted at this time, and the structural stability of the positioning device is supported by the middle liftable column 1 and the front liftable column 1, and the positioning device is moved forward so that the rear liftable column 1 is moved to a certain place on the upper step, and the track plate 10 is arranged at the corresponding position of the upper step directly below the rear liftable column 1, and then the rear liftable column 1 is extended so that the rear liftable column 1 is supported on the track plate 10 of the upper step. The positioning device can be moved to the lower step by taking the opposite steps.

[0032] (S2) Install the initial corrugated plate on the top of the tunnel on the roller arch 7. The initial corrugated plate on the top of the tunnel is in contact with the roller arch 7 through the positioning roller 8. Since the surface of the initial corrugated plate on the top of the tunnel is corrugated and uneven, it cannot be completely in contact with the positioning roller 8. Therefore, when installing the initial corrugated plate on the top of the tunnel, it is necessary to first lay a panel that can adapt to the curvature of the roller arch 7 on the outside of the positioning roller 8, and then place the initial corrugated plate on the top of the tunnel on the panel. Among them, the distance from the supporting arch beam 12 to the center of the supporting arch 11 is controlled by adjusting the height of the inner diameter adjustment column 13 to adapt to the diameter of the initial corrugated plate on the top of the tunnel with different inner diameters and arcs; by rotating the positioning roller 8, the initial corrugated plate on the top of the tunnel can slide back and forth on the top support structure to adjust the position of the initial corrugated plate on the top of the tunnel.

[0033] (S3) Moving the positioning device to a corresponding position, and using the positioning device to support the initial corrugated plate on the top of the tunnel to achieve support for the top of the tunnel.

[0034] This embodiment also has the following beneficial effects: the construction method is simple, and the positioning and support of the initial corrugated plate on the top of the tunnel are achieved.

[0035] Although the above embodiments have described in detail the concepts and embodiments of the present invention with reference to the accompanying drawings, ordinary technicians in this field can recognize that various improvements and changes can still be made to the present invention without departing from the scope of the claims, so they are not described one by one here.

Claims

1. A construction method for a traveling primary branch segment positioning device applicable to tunnels with different inner diameters, characterized in that: The construction method comprises the following steps: (S1) Installing a positioning device in the tunnel; wherein the positioning device includes a top supporting structure and a bottom moving structure, the top supporting structure includes a supporting arch, an inner diameter adjustment column, an arch supporting beam, a roller arch and a positioning roller, the supporting arch is arranged transversely and a plurality of the supporting arches are arranged at intervals in the longitudinal direction, the supporting arch is installed on the bottom moving structure, a plurality of the inner diameter adjustment columns are arranged along the arc length direction of the supporting arch, the inner diameter adjustment columns in the same longitudinal direction are connected by the arch supporting beam, the arch supporting beams are connected by the roller arch and the roller arch and the arch supporting beam are movably connected, each of the roller arches is installed with a positioning roller and the positioning roller rotates freely around the roller arch; the bottom moving structure is installed on the track plate and can move along the length direction of the track plate, and the laying position of the track plate is determined by the installation position of the initial corrugated plate on the top of the tunnel; (S2) installing the tunnel top primary supporting corrugated plate on the roller arch, wherein the tunnel top primary supporting corrugated plate is in contact with the roller arch through the positioning roller; wherein the distance from the supporting arch beam to the center of the supporting arch circle is controlled by adjusting the height of the inner diameter adjustment column to adapt to the diameter of the tunnel top primary supporting corrugated plate with different inner diameters and arcs; and the tunnel top primary supporting corrugated plate can be slid forward and backward on the top supporting structure by rotating the positioning roller to adjust the position of the tunnel top primary supporting corrugated plate; (S3) Moving the positioning device to a corresponding position, and using the positioning device to support the initial corrugated plate on the top of the tunnel to achieve support for the top of the tunnel.

2. The construction method of the traveling primary branch segment positioning device applicable to tunnels with different inner diameters as claimed in claim 1, characterized in that: The bottom movable structure includes a liftable column, a supporting beam, an inclination adjustment column and an inclination adjustment beam. The liftable columns are provided in three groups and each group of the liftable columns includes two liftable columns arranged opposite to each other. The tops of the liftable columns on the same side of the three groups of liftable columns are connected by the supporting beam. The top of each of the two ends of the supporting beam is provided with an inclination adjustment column, and the top of the inclination adjustment column is movably connected to the bottom of the inclination adjustment beam. The supporting arch of the top supporting structure is installed on the inclination adjustment beam, and the inclination adjustment beam is installed with an inclination display device.

3. The construction method of the traveling primary branch segment positioning device applicable to tunnels with different inner diameters as claimed in claim 2, characterized in that: A sliding roller is provided at the bottom of the liftable column, and the sliding roller is mounted on the track plate; a brake plate is provided on the sliding roller.

4. The construction method of the traveling primary branch segment positioning device applicable to tunnels with different inner diameters as claimed in claim 3 is characterized by: The steps of moving the positioning device from the lower step or the middle step to the upper step are: retracting the liftable column at the front to the height of the upper step, driving the bottom moving structure to move forward on the track plate until the liftable column at the front moves to a preset position on the upper step, arranging a group of the track plates on the upper step directly below the liftable column at the front, and then extending the liftable column at the front to support it on the track plate.

5. The construction method of the traveling primary branch segment positioning device applicable to tunnels with different inner diameters as claimed in claim 4, characterized in that: After the liftable column at the front is supported on the track plate on the upper step, the liftable column at the middle is retracted to the height of the upper step, and the liftable columns at the front and rear are driven forward on the track plate until the liftable column at the middle reaches a preset position on the upper step, and another group of track plates is arranged on the upper step directly below the liftable column at the middle, and then the liftable column at the middle is extended to support the group of track plates.

6. The construction method of the traveling primary branch segment positioning device applicable to tunnels with different inner diameters as claimed in claim 5, characterized in that: After the liftable columns in the middle are supported on the track plate on the upper step, the liftable columns in the rear are retracted to the height of the upper step, and the liftable columns in the front and middle are driven forward on the track plate until the liftable columns in the rear reach a preset position on the upper step, and another group of the track plates are arranged on the upper step directly below the liftable columns in the rear, and then the liftable columns in the rear are extended to support themselves on the group of track plates.

7. The construction method of the traveling primary branch segment positioning device applicable to tunnels with different inner diameters as claimed in claim 2, characterized in that: A connecting ball is arranged at the top of the inclination adjustment column, and a spherical connecting groove matched with the connecting ball is arranged at the bottom of the inclination adjustment cross beam, and the connecting ball can rotate freely in the spherical connecting groove.

8. The construction method of the traveling primary branch segment positioning device applicable to tunnels with different inner diameters as claimed in claim 2, characterized in that: The supporting crossbeam is provided with supporting oblique arches, wherein the number of the supporting oblique arches is two, and the two ends of the supporting oblique arches are respectively installed at the diagonal positions of the two supporting crossbeams, and an X-shaped structure is formed between the two supporting oblique arches.

9. The construction method of the traveling primary branch segment positioning device applicable to tunnels with different inner diameters as claimed in claim 1, characterized in that: When installing the initial corrugated plate on the top of the tunnel, first lay a panel that can adapt to the arch of the roller on the outside of the positioning roller, and then place the initial corrugated plate on the top of the tunnel on the panel to make the initial corrugated plate on the top of the tunnel fully contact with the positioning roller.

10. The construction method of the traveling primary branch segment positioning device applicable to tunnels with different inner diameters as claimed in claim 3, characterized in that: A notch for placing the sliding roller is provided on the top of the track plate, and a clamping plate and a clamping slot matched with the clamping plate are respectively provided at both ends of the track plate, and a limit rod and a flippable limit plate are respectively provided at both ends of the side of the track plate, and the limit plate is connected to the track plate through a rotating shaft, and a limit groove matched with the limit rod is provided on the top of the limit plate; the track plate is lengthened by inserting the clamping plate on one track plate into the clamping slot on another track plate; the track plate is fixed by flipping the limit plate on one track plate so that the limit groove on the limit plate opens downward and the limit groove matches with the limit rod on the other track plate.

Images