Adjustable installation device for joint steel bars of tunnel low side wall and method for installing joint steel bars

Abstract

The present invention provides an adjustable installation device for joint steel bars of a short side wall of a tunnel and a method for installing the joint steel bars. The adjustable installation device comprises a first bracket and a second bracket. The first bracket and the second bracket cooperate with a first sliding rail extending in the transverse direction and a movable plate to realize relative movement of the two brackets, so as to realize adjustment of the transverse spacing between the two brackets. The two brackets are respectively provided with sliding pipes, which can move in the longitudinal direction. A plurality of sleeves are colinearly arranged on the sliding pipes, and the sleeves are used to set the joint steel bars. When installing the joint steel bars, firstly adjust the spacing between two rows of joint steel bars on the installation device in the transverse and longitudinal directions to realize accurate positioning of the installation position of the joint steel bars. The installation device is placed on the short side wall to avoid conflicts in installation space with a buried water stop. The insertion degree of the joint steel bars is referenced by the setting height of the sleeve, so as to ensure the consistency of the setting height of the joint steel bars in the same row.

Description

Technical Field

[0001] The present invention relates to the technical field of tunnel engineering construction, and in particular to an adjustable installation device for joint steel bars of a tunnel low side wall and a method for installing the joint steel bars. Background Art

[0002] In tunnel construction, the secondary lining and invert can be set up in two ways: full-ring reinforced or unreinforced. When the secondary lining and invert are set up with full-ring reinforced, the invert construction needs to reserve outward-extending lap reinforcement for the subsequent lap construction of the secondary lining reinforcement. When the secondary lining and invert are set up with full-ring unreinforced, it is necessary to install stub reinforcement at the top of the short side wall during the invert construction according to the design and inspection requirements. Figure 1 , at the short side wall 02 of the inverted arch section 01, install two rows of joint steel bars 03 and embedded water stop 04 before the secondary lining. The embedded water stop 04 is set between the two rows of joint steel bars 03. After the installation of the joint steel bars is completed, see Figure 2 , carry out secondary lining 04, and connect the secondary lining 04 and the invert arch section 01 with steel bars 03 to strengthen the overall connectivity of the two construction sites and improve the bearing capacity of the structure.

[0003] The general installation standard for joint steel bars is to set up two rows of joint steel bars, and the two rows of steel bars are staggered; the diameter of the steel bars is Φ16mm, the length is 50cm~60cm, the insertion depth is 25cm, the exposed 25cm~30cm, and the spacing between steel bars in the same row is 60cm; according to different lining types, thicknesses, etc., the horizontal and vertical spacing of the joint steel bars can be adjusted.

[0004] At present, the construction time for constructing joint steel bars in the low side wall of the inverted arch is mainly to install them at an appropriate time after the concrete is poured and before the initial setting. There are two main installation methods, namely manual installation and auxiliary tool installation. The overall requirement is to pull the wire when inserting the joint steel bars to ensure that the joint steel bars in the same row are in one line and the tops are at the same height.

[0005] However, both manual installation and installation with auxiliary tools have disadvantages to varying degrees. When manual installation is used, it is difficult to ensure the quality requirements of the linear shape, insertion depth, etc. of the same row of joint steel bars. Most of the existing auxiliary tools are simple fixed brackets that cannot adjust the horizontal and vertical spacing between the two rows of joint steel bars. They are only designed for one installation size. At the same time, the overall structure of most auxiliary installation brackets is thin, and they will bend and deform in the longitudinal direction, which will lead to deviations in installation accuracy. There is also a contradiction in the installation space position between them and the embedded water stop, which causes mutual interference in construction. In summary, there are many problems in the current construction of joint steel bars, which result in cumbersome operation, easy deformation, single size and poor adaptability. Summary of the Invention

[0006] The first object of the present invention is to provide an adjustable installation device for joint steel bars of a tunnel short side wall.

[0007] The second object of the present invention is to provide an adjustable method for installing joint steel bars on a short tunnel side wall.

[0008] In order to achieve the above-mentioned first purpose, the adjustable installation device for joint steel bars of a tunnel short side wall provided by the present invention includes a first bracket and a second bracket, the first bracket is provided with a first slide rail, the first slide rail extends horizontally, the second bracket is provided with a movable plate, the movable plate moves in the first slide rail, and the second bracket moves toward or away from the first bracket along the extension direction of the first slide rail; the first bracket is provided with a second slide rail, the second bracket is provided with a third slide rail, the second slide rail and the third slide rail extend longitudinally respectively, the first bracket is provided with a first slide tube, the first slide tube is cooperated and connected with the second slide rail, the first slide tube moves along the extension direction of the second slide rail, the second bracket is provided with a second slide tube, the second slide tube is cooperated and connected with the third slide rail, and the second slide tube moves along the extension direction of the third slide rail.

[0009] It can be seen from the above scheme that the joint steel bars are installed in the first sleeve and the second sleeve respectively, and the installation position of the joint steel bars is positioned by the first sleeve and the second sleeve. In the installation device, the first slide rail and the movable plate cooperate to realize the horizontal adjustment of the spacing of the two rows of joint steel bars. In the installation device, the second slide rail and the first slide tube are cooperated and connected, and the third slide rail and the second slide tube are cooperated to realize the longitudinal movement of the two rows of joint steel bars, so as to realize the longitudinal adjustment of the spacing of the two rows of joint steel bars and realize the precise positioning of the installation position of the joint steel bars. At the same time, the installation is carried out after the spacing between the two rows of joint steel bars is adjusted, which can avoid the conflict in installation space with the embedded water stop. The adjustable installation device of the joint steel bars effectively controls the accuracy of the positioning of the joint steel bars, reduces labor input, and improves the overall construction efficiency. The sleeves are correspondingly arranged on the corresponding slide tubes along the longitudinal collinearity to ensure that the same row of steel bars are on the same line. The insertion degree of the joint steel bars is referenced by the setting height of the sleeve, thereby ensuring the consistency of the setting height of the joint steel bars in the same row, so that the joint steel bars have a better effect.

[0010] A further solution is that the adjustable installation device for splicing steel bars includes a connecting assembly, which is respectively connected to the first bracket and the second bracket; the connecting assembly includes a first rotating sleeve, a second rotating sleeve, an adjusting screw and a thread, the first rotating sleeve is arranged on the first bracket, the second rotating sleeve is arranged on the second bracket, the thread is arranged in the second rotating sleeve, the axial first end of the adjusting screw passes through the second rotating sleeve and the second bracket, the axial first end of the adjusting screw is connected to the second rotating sleeve, the axial second end of the adjusting screw can be arranged in the first rotating sleeve, and the adjusting screw is connected to the second rotating sleeve through the thread.

[0011] It can be seen that the adjusting screw rod passes through the first bracket and the second bracket respectively, and the adjusting screw rod is connected to the thread inside the second rotating sleeve on the second bracket. When the adjusting screw rod on the second bracket is driven to rotate, the second bracket moves away from or toward the first bracket, thereby realizing the adjustment of the distance between the joint steel bars on the first bracket and the second bracket.

[0012] A further solution is that a first positioning plate and a second positioning plate are provided on the first bracket. In the vertical direction, the first positioning plate is arranged above the second positioning plate, the first slide rail is formed between the first positioning plate and the second positioning plate, and the movable plate is respectively fitted with the first positioning plate and the second positioning plate in a clearance.

[0013] It can be seen that the first slide rail is formed between the first positioning plate and the second positioning plate, and the movable plate is respectively matched with the first positioning plate and the second positioning plate in a clearance, so that the first slide rail limits the moving direction of the movable plate, so that the movable plate can move more accurately in the transverse direction, thereby achieving more accurate adjustment of the transverse spacing between the two rows of joint steel bars.

[0014] A further solution is that the first bracket is provided with a third positioning plate, and along the vertical direction, the third positioning plate is arranged between the second positioning plate and the bottom of the first bracket.

[0015] It can be seen that the third positioning plate is set close to the bottom of the first bracket. When the adjustable installation device of the joint steel bar is placed on the concrete mark surface on the top surface of the short side wall, the third installation plate is adjacent to the top of the embedded waterstop in the short side wall. The height of the third positioning plate based on the concrete mark surface is the height value of the leakage of the embedded waterstop, which can be used as a reference for verifying the position of the waterstop after installation.

[0016] A further solution is that a plurality of first bases are provided on the first bracket, and the plurality of first bases are collinearly arranged in the longitudinal direction; a second base is provided on the second bracket, and the plurality of second bases are collinearly arranged in the longitudinal direction.

[0017] It can be seen that the length of the adjustable installation device for splicing steel bars along the longitudinal direction is relatively large, and multiple bases are respectively provided on the first bracket and the second bracket, which increases the stability of the adjustable installation device for splicing steel bars, makes the device less likely to deform, and enables the installation device to better maintain balance when installing the splicing steel bars.

[0018] A further solution is that the second slide rail is provided based on the side wall protrusion of the second bracket, and the first slide tube is clearance-matched with the second slide rail along the circumference of the second slide rail.

[0019] It can be seen that the second sliding tube is connected to the second sliding rail along the circumference of the second sliding rail, and the second sliding rail positions the moving direction of the first sliding tube, so that the sleeve on the first sliding tube always remains in a collinear arrangement in the longitudinal direction, reducing the installation deviation of the joint steel bars.

[0020] To achieve the above-mentioned second purpose, the method for installing the reinforcement bars of the tunnel short side wall provided by the present invention sequentially performs the following steps:

[0021] Adjustment steps of the adjustable installation device for joint steel bars:

[0022] The adjustable installation device for joint steel bars is the above-mentioned adjustable installation device for joint steel bars of a tunnel low side wall, which drives the second bracket to move laterally toward or away from the first bracket to adjust the lateral spacing between the first sleeve and the second sleeve;

[0023] The first slide tube moves along the extension direction of the second slide rail, and the second slide tube moves along the extension direction of the third slide rail. The movement direction of the first slide tube is opposite to the movement direction of the second slide tube, and the longitudinal distance between the first sleeve and the second sleeve is adjusted.

[0024] Installation steps of adjustable installation device for joint steel bars:

[0025] After the concrete pouring of the inverted arch low side wall is completed but before the concrete sets, the adjustable installation device for the joint steel bar is placed on the concrete surface of the top surface of the low side wall;

[0026] Steps for installing joint steel bars:

[0027] Insert the joint steel bars in the first sleeve and the second sleeve into the concrete.

[0028] It can be seen from the above scheme that before the adjustable installation device of the joint steel bars is used to install the joint steel bars, the position of the joint steel bars is first determined. By adjusting the horizontal distance between the first bracket and the second bracket, and driving the first slide tube to move relative to the second slide rail, and the second slide tube to move relative to the third slide rail, the longitudinal movement position of the two rows of sleeves is adjusted, thereby driving the position of each sleeve, and then the joint steel bars are accurately inserted into the required position of the concrete through the sleeve.

[0029] A further solution is that in the adjustment step of the adjustable installation device for splicing steel bars, after completing the adjustment of the longitudinal spacing between the first sleeve and the second sleeve, the first sleeve and the second sleeve are arranged in an alternating manner along the longitudinal direction along the transverse projection direction.

[0030] It can be seen that the first sleeve and the second sleeve are staggered in the longitudinal direction, so that the setting of the joint steel bars on the short side wall is tighter and the connection effect of the joint steel bars is better.

[0031] A further solution is that in the installation step of the adjustable installation device for joint steel bars, the horizontal plane on the second bracket is adjacent to the top of the embedded waterstop on the short side wall, and the embedded waterstop is located at the midpoint of the first sleeve and the second sleeve in the horizontal direction.

[0032] It can be seen that the horizontal plane on the second bracket is adjacent to the top of the embedded waterstop, so that the installation device can be used as a reference for verifying the position of the waterstop after installation, and the position of the embedded waterstop determines the position of the two rows of joint steel bars, which can better avoid the installation position conflict between the joint steel bars and the embedded waterstop.

[0033] A further solution is that after the installation steps of the previous version of the joint steel bars are completed, the adjustable installation device of the joint steel bars moves forward, and when the next version of the joint steel bars is installed, the first sleeve and the second sleeve of the adjustable installation device of the joint steel bars are correspondingly connected to the previous version of the joint steel bars.

[0034] It can be seen that when installing the next version of the joint steel bars, the installation device selects the previous version of the joint steel bars for connection, which can position the installation of the next version of the joint steel bars so that the installation of the upper and lower versions of the joint steel bars remains consistent. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the installation position of the joint steel bars and the embedded water stop on the low side wall in the background technology.

[0036] Figure 2 It is a schematic diagram of the relationship between the installation positions of the joint steel bars and the embedded water stop on the low side wall and the secondary lining positions in the background technology.

[0037] Figure 3 It is a front view of an embodiment of the adjustable installation device for joint reinforcement of a tunnel short side wall according to the present invention.

[0038] Figure 4 It is a side view of an embodiment of the adjustable installation device for joint reinforcement of a tunnel short side wall according to the present invention.

[0039] Figure 5 This is a structural diagram of the first bracket in an embodiment of the adjustable installation device for joint steel bars of a tunnel low side wall of the present invention.

[0040] Figure 6 It is a structural diagram of the second bracket in an embodiment of the adjustable installation device for joint steel bars of a tunnel short side wall of the present invention.

[0041] Figure 7 It is a schematic diagram of the adjustment steps of the adjustable installation device for splicing steel bars in an embodiment of the method for installing splicing steel bars for a low side wall of a tunnel of the present invention.

[0042] Figure 8 It is a schematic diagram of the installation steps of the adjustable installation device for joint steel bars and the installation steps of the joint steel bars in an embodiment of the method for installing joint steel bars for the short side wall of a tunnel of the present invention.

[0043] Figure 9 yes Figure 8 Enlarged view of point A.

[0044] The present invention will be further described below with reference to the accompanying drawings and embodiments. DETAILED DESCRIPTION

[0045] The adjustable installation device for the joint steel bars of the tunnel low side wall of the present invention realizes the spacing adjustment in the transverse direction through the relative movement of two brackets. The sliding tubes extending longitudinally on the two brackets move in the longitudinal direction, so that a whole row of multiple joint steel bars are arranged in a longitudinal collinear manner, and the installation position of the joint steel bar core is accurately positioned. Before installation, the spacing between the two rows of joint steel bars in various directions is adjusted first, and then the joint steel bars are installed to avoid conflicts in installation space with the embedded water stop.

[0046] See also Figure 3 The adjustable installation device 1 for connecting reinforcement bars of a tunnel short side wall comprises a first bracket 2 and a second bracket 3. The first bracket 2 and the second bracket 3 move relative to each other. Figure 4 The first bracket 2 and the second bracket 3 are respectively in the shape of long strips, and the length of the first bracket 2 and the length of the second bracket 3 extend in the longitudinal direction respectively.

[0047] See also Figure 5 The first bracket 2 includes a first support plate 21, multiple first bases 22, a first positioning plate 23, a second positioning plate 24, and a third positioning plate 25. The first support plate 21 is provided with multiple first support legs 26. The multiple first support legs 26 are arranged in a longitudinal collinear manner. One first support leg 26 is connected to one first base 22, so that the multiple first bases 22 are arranged in a longitudinal collinear manner. The first positioning plate 23, the second positioning plate 24, and the third positioning plate 25 are arranged on the same side wall of the first support plate 21. The first positioning plate 23, the second positioning plate 24, and the third positioning plate 25 extend in the horizontal direction respectively. In the vertical direction, the first positioning plate 23 is arranged above the second positioning plate 24, the second positioning plate 24 is arranged above the third positioning plate 25, and the third positioning plate 25 is arranged between the second positioning plate 24 and the first base 22. A first slide rail 26 is formed between the first positioning plate 23 and the second positioning plate 24, and the first slide rail 26 extends in the horizontal direction. The first slide rail 26 is provided with an opening 261 toward the second bracket 3.

[0048] See also Figure 6The second bracket 3 includes a second support plate 31, a plurality of second bases 32 and a movable plate 33. The second support plate 31 is provided with a plurality of second support legs 34. The plurality of second support legs 34 are arranged in a longitudinal collinear manner. One second support leg 34 is connected to one second base 32, so that the plurality of second bases 32 are arranged in a longitudinal collinear manner. The movable plate 33 is arranged on the side wall of the second support plate 31 facing the opening 261 of the first slide rail 26. The movable plate 33 passes through the opening 261 and moves along the extension direction of the first slide rail 26 between the first positioning plate 23 and the second positioning plate 24 in the first slide rail 26. The movable plate 33 is respectively fitted with the first positioning plate 23 and the second positioning plate 24 in a clearance manner, so that the first positioning plate 23 and the second positioning plate 24 limit the moving direction of the movable plate 33, so that the movable plate 33 can move more accurately in the transverse direction, thereby achieving more accurate adjustment of the transverse spacing between the two rows of joint steel bars 03. In this embodiment, the first positioning plate 23, the second positioning plate 24, and the movable plate 33 are each a large plate. As another embodiment, the first positioning plate 23, the second positioning plate 24, and the movable plate 33 can also be a small spliced ​​plate. One first positioning plate 23, one second positioning plate 24, and one movable plate 33 form a set of transverse movable structures, and the multiple transverse movable structures are arranged in a longitudinal collinear manner. The first positioning plate 23 can be provided with an oil filling port 231 for injecting lubricating oil into the first slide rail 26, thereby facilitating smoother movement of the movable plate 33 within the first slide rail 26.

[0049] The adjustable installation device 1 for jointed steel bars includes a connecting assembly 4, which is respectively connected to the first bracket 2 and the second bracket 3; the connecting assembly 4 is arranged between the second positioning plate 24 and the third positioning plate 25. The connecting assembly 4 includes a first rotating sleeve 41, a second rotating sleeve 42, an adjusting screw 43 and a thread 44. The first rotating sleeve 41 is arranged on the first bracket 2, the second rotating sleeve 42 is arranged on the second bracket 3, and the thread 44 is arranged in the second rotating sleeve 42. The axial first end of the adjusting screw 43 passes through the second rotating sleeve 42 and the second bracket 3 in sequence. The adjusting screw 43 is connected to the second rotating sleeve 42 via the thread 44. The axial second end of the adjusting screw 43 can be arranged in the first rotating sleeve 41 or in the first bracket 2. The adjusting screw rod 43 is connected to the first bracket 2 and the second bracket 3 respectively, and the adjusting screw rod 43 is connected to the thread 44 in the second rotating sleeve 42 on the second bracket 3. When the adjusting screw rod 43 on the second bracket 3 is driven to rotate, the second bracket 3 moves away from or toward the first bracket 2 along the extension direction of the first slide rail 26, thereby realizing the adjustment of the horizontal distance between the joint steel bars 03 on the first bracket 2 and the second bracket 3.

[0050] The first bracket 2 is provided with a second slide rail 28, which extends in the longitudinal direction. The second bracket 3 is provided with a third slide rail 35, which extends in the longitudinal direction. The second slide rail 28 is arranged parallel to the third slide rail 35. In this embodiment, the second slide rail 28 is arranged on the side wall of the first support plate 21 away from the second bracket 3, and the second slide rail 28 is arranged to protrude based on the first support plate 21. The third slide rail 35 is arranged on the side wall of the second support plate 31 away from the first bracket 2, and the third slide rail 35 is arranged to protrude based on the second support plate 31. The first bracket 2 is provided with a first slide tube 28, which is cooperatively connected to the second slide rail 28. The second bracket 3 is provided with a second slide tube 36, which is cooperatively connected to the third slide rail 35. In this embodiment, the first slide tube 28 is connected to the second slide rail 28 with a clearance fit along the circumference of the second slide rail 28, forming a C-shape at the connection between the second slide tube 36 and the second slide rail 28. The second slide rail 28 positions the movement direction of the first slide tube 28, thereby reducing installation deviation of the jointed rebar 03. Similarly, the second slide tube 36 is connected to the third slide rail 35 with a clearance fit along the circumference of the third slide rail 35.

[0051] In this embodiment, a first step 271 is provided on the side wall of the second slide rail 28 away from the first base 22, and a second step 281 is provided on the side wall of the first slide tube 28 facing the second slide rail 28. The first step 271 and the second step 281 cooperate and abut to prevent the first slide tube 28 from falling off the second slide rail 28. Similarly, a two-step mating connection structure is also provided between the third slide rail 35 and the second slide tube 36.

[0052] A plurality of first sleeves 210 are provided on the first sliding tube 28, and the plurality of first sleeves 210 are arranged in a collinear manner in the longitudinal direction. A plurality of second sleeves 37 are provided on the second sliding tube 36, and the plurality of second sleeves 37 are arranged in a collinear manner in the longitudinal direction. The first sleeves 210 and the second sleeves 37 are respectively used to set the joint steel bars 03, and the joint steel bars 03 pass through the sleeves.

[0053] The installation method of the joint steel bars of the tunnel low side wall is as follows:

[0054] Adjustment steps of the adjustable installation device for joint steel bars:

[0055] The adjustable installation device for joint steel bars is the above-mentioned adjustable installation device for joint steel bars of tunnel short side wall 1, see Figure 7 , driving the adjusting screw 43 to rotate, so that the second bracket 3 moves toward or away from the first bracket 2, so that the movable plate 33 moves in the first slide rail 26, and the lateral spacing between the first sleeve 210 and the second sleeve 37 is adjusted. An adjusting scale 5 can be provided between the first bracket 2 and the second bracket 3, and the adjusting scale 5 is used to determine whether the spacing between the first sleeve 210 and the second sleeve 37 has reached the desired spacing;

[0056] The first slide tube 29 is driven to move along the extension direction of the second slide rail 28 and the second slide tube 36 is driven to move along the extension direction of the third slide rail 35. The movement direction of the first slide tube 29 is opposite to the movement direction of the second slide tube 36, or the movement direction of the first slide tube 29 is the same as the movement direction of the second slide tube 36, so as to adjust the longitudinal distance between the first sleeve 210 and the second sleeve 37.

[0057] After the longitudinal spacing between the first sleeve 210 and the second sleeve 37 is adjusted, the first sleeve 210 and the second sleeve 37 can be staggered in the longitudinal direction along the transverse projection direction, that is, a second sleeve 37 is provided between two adjacent first sleeves 210 .

[0058] Installation steps of adjustable installation device for joint steel bars:

[0059] See also Figure 8 and Figure 9 After the concrete of the inverted arch low side wall is poured and before the concrete begins to set, the adjustable steel bar installation device 1 is placed on the concrete surface of the top surface of the low side wall 02, so that the side wall of the third installation plate facing the first base 22 is adjacent to the top of the embedded waterstop 04 on the low side wall 02, and the embedded waterstop 04 is located at the midpoint between the first sleeve 210 and the second sleeve 37;

[0060] Installation steps of joint steel bar 03:

[0061] Insert the joint steel bars 03 in the first sleeve 210 and the second sleeve 37 into the concrete, and insert half the length of the joint steel bars 03; after the installation steps of the previous version of the joint steel bars 03 are completed, the adjustable joint steel bar installation device 1 moves forward, and when installing the next version of the joint steel bars 03, at least two of the first sleeves 210 and at least two second sleeves 37 of the adjustable joint steel bar installation device 1 are connected to the previous version of the joint steel bars 03 correspondingly, so that the upper and lower versions of the joint steel bars remain consistent in the longitudinal direction.

[0062] The joint steel bars 03 are respectively installed in the first sleeve 210 and the second sleeve 37, and the installation position of the joint steel bars 03 is positioned by the first sleeve 210 and the second sleeve 37. The installation device 1 realizes the horizontal spacing adjustment of the two rows of joint steel bars 03 through the cooperation between the first slide rail 26 and the movable plate 33. The installation device 1 realizes the longitudinal movement of the two rows of joint steel bars 03 through the cooperation connection between the second slide rail 28 and the first slide tube 29, and the cooperation connection between the third slide rail 35 and the second slide tube 36, thereby realizing the longitudinal spacing adjustment of the two rows of joint steel bars 03 and realizing the installation of the joint steel bars 03. The precise positioning of the position and the installation after adjusting the spacing between the two rows of joint steel bars 03 can avoid the conflict in installation space with the embedded water stop 04. The adjustable installation device 1 of the joint steel bar can effectively control the accuracy of the positioning of the joint steel bar 03 while reducing labor input and improving the overall construction efficiency. The sleeves are correspondingly arranged on the corresponding sliding pipes along the longitudinal collinearity to ensure that the same row of steel bars are on the same line. The insertion degree of the joint steel bar 03 is referenced by the setting height of the sleeve, thereby ensuring that the setting height of the joint steel bar 03 in the same row is consistent, so that the joint steel bar 03 has a better effect.

[0063] Finally, it should be emphasized that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various changes and modifications. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An adjustable installation device for joint reinforcement of a tunnel low side wall, characterized in that: include: A first bracket and a second bracket, wherein the first bracket and the second bracket are respectively in a long strip shape, and the lengths of the first bracket and the second bracket extend in the longitudinal direction; The first bracket is provided with a first slide rail, the first slide rail extends in a transverse direction, the second bracket is provided with a moving plate, the moving plate moves on the first slide rail, and the second bracket moves toward or away from the first bracket along the extension direction of the first slide rail; The first bracket is provided with a second slide rail, the second bracket is provided with a third slide rail, the second slide rail and the third slide rail extend longitudinally respectively, the first bracket is provided with a first slide tube, the first slide tube is matched and connected with the second slide rail, the first slide tube moves along the extension direction of the second slide rail, the second bracket is provided with a second slide tube, the second slide tube is matched and connected with the third slide rail, the second slide tube moves along the extension direction of the third slide rail; The first sliding tube is provided with a plurality of first sleeves, which are collinearly arranged in the longitudinal direction; the second sliding tube is provided with a plurality of second sleeves, which are collinearly arranged in the longitudinal direction; the first sleeves and the second sleeves are respectively used for setting the joint steel bars.

2. The adjustable installation device for joint steel bars of a tunnel short side wall according to claim 1 is characterized in that: The adjustable installation device for jointed steel bars includes a connecting assembly, and the connecting assembly is connected to the first bracket and the second bracket respectively; The connecting assembly includes a first rotating sleeve, a second rotating sleeve, an adjusting screw and a thread, the first rotating sleeve is arranged on the first bracket, the second rotating sleeve is arranged on the second bracket, the thread is arranged in the second rotating sleeve, the axial first end of the adjusting screw passes through the second rotating sleeve and the second bracket, the axial first end of the adjusting screw is connected to the second rotating sleeve, the axial second end of the adjusting screw can be arranged in the first rotating sleeve, and the adjusting screw is connected to the second rotating sleeve through the thread.

3. The adjustable installation device for joint steel bars of a tunnel short side wall according to claim 1 is characterized in that: The first bracket is provided with a first positioning plate and a second positioning plate. In the vertical direction, the first positioning plate is arranged above the second positioning plate, the first slide rail is formed between the first positioning plate and the second positioning plate, and the movable plate is respectively fitted with the first positioning plate and the second positioning plate in a clearance.

4. The adjustable installation device for joint steel bars of a tunnel short side wall according to claim 3 is characterized in that: The first bracket is provided with a third positioning plate, and along the vertical direction, the third positioning plate is arranged between the second positioning plate and the bottom of the first bracket.

5. The adjustable installation device for joint steel bars of a tunnel short side wall according to claim 1 is characterized in that: The first bracket is provided with a plurality of first bases, and the plurality of first bases are collinearly arranged in the longitudinal direction. The second bracket is provided with a second base, and the plurality of second bases are collinearly arranged in the longitudinal direction.

6. The adjustable installation device for joint reinforcement of a tunnel short side wall according to any one of claims 1 to 5, characterized in that: The second slide rail is provided based on the side wall protrusion of the second bracket, and the first slide tube is clearance-matched with the second slide rail along the circumference of the second slide rail.

7. A method for installing reinforcement bars at the short side wall of a tunnel, characterized in that: Follow these steps in order: Adjustment steps of adjustable installation device for joint steel bars: The adjustable installation device for joint steel bars is the adjustable installation device for joint steel bars for tunnel short side walls as claimed in any one of claims 1 to 6, which drives the second bracket to move laterally toward or away from the first bracket to adjust the lateral spacing between the first sleeve and the second sleeve; The first slide tube moves along the extension direction of the second slide rail, and the second slide tube moves along the extension direction of the third slide rail. The movement direction of the first slide tube is opposite to the movement direction of the second slide tube, and the longitudinal distance between the first sleeve and the second sleeve is adjusted; Installation steps of adjustable installation device for joint steel bars: After the concrete pouring of the short side wall of the inverted arch is completed but before the concrete is initially set, the adjustable installation device for the joint steel bars is placed on the concrete surface of the top surface of the short side wall; Installation steps of joint steel bars: Insert the joint steel bars in the first sleeve and the second sleeve into concrete.

8. The method for installing joint steel bars of a tunnel short side wall according to claim 7 is characterized in that: In the adjustment step of the adjustable installation device for jointed steel bars, after the adjustment of the longitudinal spacing between the first sleeve and the second sleeve is completed, the first sleeve and the second sleeve are arranged alternately in the longitudinal direction along the transverse projection direction.

9. The method for installing joint steel bars of a tunnel short side wall according to claim 7 is characterized in that: In the installation steps of the adjustable installation device for joint steel bars, the horizontal plane on the second bracket is adjacent to the top end of the embedded waterstop on the short side wall, and the embedded waterstop is located at the midpoint of the first sleeve and the second sleeve in the horizontal direction.

10. The method for installing joint steel bars for short side walls of a tunnel according to any one of claims 7 to 9, characterized in that: After the installation steps of the previous version of the joint steel bars are completed, the adjustable installation device for the joint steel bars moves forward. When installing the next version of the joint steel bars, the first sleeve and the second sleeve of part of the adjustable installation device for the joint steel bars are correspondingly connected to the previous version of the joint steel bars.

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