CN211287709U

CN211287709U - Tunnel secondary lining steel bar binding positioning frame and positioning system

Info

Publication number: CN211287709U
Application number: CN201921862656.9U
Authority: CN
Inventors: 张敏; 于庆斌
Original assignee: Third Engineering Co Ltd of China Railway 19th Bureau Group Co Ltd
Current assignee: Third Engineering Co Ltd of China Railway 19th Bureau Group Co Ltd
Priority date: 2019-10-31
Filing date: 2019-10-31
Publication date: 2020-08-18
Anticipated expiration: 2029-10-31

Abstract

The utility model relates to a tunnel construction, in particular to two lining reinforcement locating racks in tunnel and positioning system. Including the base, be equipped with the stand that can follow its length direction activity on the base, be equipped with the supporting part on the stand, be equipped with on the supporting part and be used for carrying out spacing stop gear to the hoop reinforcing bar, still be equipped with the adjustment mechanism who is used for adjusting hoop reinforcing bar and tunnel inner wall distance on the supporting part. The utility model discloses can effectively adjust the hoop reinforcing bar interval and the line type accuracy of two linings to the effectual quality that improves secondary lining.

Description

Tunnel secondary lining steel bar binding positioning frame and positioning system

Technical Field

The utility model relates to a tunnel construction, in particular to two lining reinforcement locating racks in tunnel and positioning system.

Background

In tunnel construction, secondary lining is the one deck atress structural layer that is indispensable, it is reinforced concrete structure generally, wherein among the secondary lining reinforcement quality good or bad, direct influence secondary lining structure atress structure's effect, nevertheless in tunnel construction process, secondary lining reinforcement's accurate positioning is a big difficult problem of restriction two lining construction quality, among the two lining steel bar constructions in present tunnel, when ligature hoop reinforcing bar, mainly through artifically, both cost man-hour, reinforcing bar interval and line type also can't be ensured simultaneously, consequently, need to design a locating rack for fixing a position two lining reinforcing bar in tunnel urgently.

Therefore, a tunnel secondary lining steel bar binding positioning frame and a positioning system are provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a two lining reinforcement locating racks in tunnel and positioning system to in solving the tunnel construction process, the hoop reinforcing bar interval and the lower technical problem of line type accuracy of two linings.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a two lining reinforcement locating racks in tunnel, includes the base, is equipped with the stand that can follow its length direction activity on the base, is equipped with the supporting part on the stand, is equipped with on the supporting part to be used for carrying out spacing stop gear to the hoop reinforcing bar, still is equipped with the adjustment mechanism who is used for adjusting hoop reinforcing bar and tunnel inner wall distance on the supporting part.

Preferably, the supporting part comprises a first supporting rod and a second supporting rod which are respectively arranged on two sides of the stand column, one ends, far away from each other, of the first supporting rod and the second supporting rod are respectively fixed with a limiting mechanism, and the first supporting rod and the second supporting rod do telescopic motion on the stand column through an adjusting mechanism.

Preferably, stop gear includes the supporting shoe, and one side that the supporting shoe is close to tunnel inner wall is equipped with in proper order:

an opening for the circumferential reinforcement to enter;

a reinforcement placing groove for placing the circumferential reinforcement;

the shape of the clamping rib groove is matched with that of the circumferential reinforcing steel bar.

Preferably, the first supporting rod and the second supporting rod are threaded rods, through holes for the first supporting rod and the second supporting rod to penetrate through are formed in the stand column, the adjusting mechanism is an adjusting bolt, the adjusting bolt is connected with the opening of the through holes through a bearing and matched with the threaded rods, and the supporting block is connected with the threaded rods through the bearing.

Preferably, the bottom of stand is equipped with the slider, and the top of base is equipped with the spout along tunnel length direction, and slider activity joint is spacing through locking mechanism between slider and the spout in the spout.

Preferably, the spout includes two slide rails that set up along tunnel length direction symmetry, and the slide rail is close to one side of slider and has seted up the spacing groove, and the slider corresponds spacing groove department and is equipped with the stopper, and locking mechanism is including setting up the fixed plate in the slider both sides and be located the slide rail top, and threaded connection has the locking bolt on the fixed plate.

Preferably, the upright post and the sliding block are detachably connected.

The utility model provides a two lining reinforcement positioning system in tunnel, includes a plurality of locating racks, and a plurality of bases set up along tunnel length direction, and a plurality of stands are equidistant to be set up.

Preferably, two adjacent bases are connected with each other to form a base assembly.

Preferably, the sliding grooves between the bases are communicated with each other to form a sliding groove assembly, embedded grooves are uniformly distributed in the sliding rail along the length direction, and the embedded grooves are communicated with the limiting grooves and matched with the limiting blocks in shape.

Has the advantages that: the utility model discloses a set up two lining reinforcement locating racks in tunnel, can effectively adjust the hoop reinforcing bar interval and the line type accuracy of two linings to effectual secondary lining's quality of having improved.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural diagram of the middle limiting mechanism of the present invention.

Fig. 3 is an enlarged view of the position a of the present invention.

Fig. 4 is a top view of the base assembly of the present invention.

Fig. 5 is a schematic view of a partial structure of the base of the present invention.

Reference numerals:

1. a base; 101. a chute; 102. a slide rail; 103. a limiting groove; 104. a groove is embedded; 105. a slot; 106. inserting a block; 107. a positioning bead; 108. positioning a groove; 2. a column; 201. a slider; 202. a limiting block; 203. a fixing plate; 204. locking the bolt; 3. a support portion; 301. a first support bar; 302. a second support bar; 4. a limiting mechanism; 401. a support block; 402. an opening; 403. a rib placing groove; 404. a clamping rib groove; 5. an adjustment mechanism; 501. adjusting the nut; 6. and (4) calibration.

Detailed Description

In order to make the above objects, features and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and examples. It is to be understood that the embodiments described are some, but not all embodiments of the invention. The specific embodiments described herein are merely illustrative of the invention and are not intended to be limiting. All other embodiments, which can be derived from the description of the embodiments of the present invention by a person skilled in the art, are within the scope of the present invention.

Referring to fig. 1, a tunnel secondary lining steel bar binding and positioning frame includes a base 1, a column 2 movable along a length direction of the base 1 is disposed on the base 1, a supporting portion 3 is disposed on the column 2, a limiting mechanism 4 for limiting an annular steel bar is disposed on the supporting portion 3, and an adjusting mechanism 5 for adjusting a distance between the annular steel bar and an inner wall of a tunnel is further disposed on the supporting portion 3.

In the implementation process of the scheme, the base 1 can be fixed through the positioning drill rod, the bottom of the base 1 can be also provided with an anti-slip layer, the bottom of the anti-slip layer can be of a tooth-shaped structure, and the base 1 is ensured not to generate dislocation or displacement under the condition of later-stage stress by increasing friction force; after the base 1 is fixed, the position of the upright posts 2 and the distance between the upright posts 2 need to be adjusted, the reference standard of the position of the upright posts 2 is mainly based on the fixed circumferential reinforcing steel bars of the tunnel, and generally, the reinforcing steel bar laying of the tunnel secondary lining comprises the following steps: 1. arranging upper-layer circumferential reinforcing steel bars along the length direction of the tunnel; 2. binding the upper layer of circumferential steel bars with the upper layer of longitudinal steel bars; 3. hanging the lower layer longitudinal steel bar; 4. arranging a lower layer of circumferential reinforcing steel bars along the length direction of the tunnel; 5. and binding the lower-layer longitudinal steel bars with the lower-layer circumferential steel bars.

Firstly, constructors can lay upper-layer circumferential reinforcing steel bars, the constructors sequentially arrange a base 1 and stand columns 2 according to the longitudinal section of the upper-layer circumferential reinforcing steel bars, the upper-layer circumferential reinforcing steel bars are equidistant, therefore, the stand columns 2 are equidistant, and the base 1 is not necessarily fixed accurately, so that the equidistant arrangement between the stand columns 2 can be adjusted through the movement of the stand columns 2 on the base 1, at the moment, the upper-layer circumferential reinforcing steel bars need to be supported through a supporting part 3, the upper-layer circumferential reinforcing steel bars can be ensured to be limited and fixed under the action of a limiting mechanism 4, the distances between the side surfaces and the tops of the adjacent reinforcing steel bars can be consistent, the problem that the distances between the reinforcing steel bars are inconsistent due to the slight deviation of the upper-layer circumferential reinforcing steel bars to a certain side can be avoided, and then, the distances between the upper-layer circumferential reinforcing steel bars and the inner wall, can guarantee the line type of upper hoop reinforcing bar, through two above-mentioned regulation steps, can realize that upper hoop reinforcing bar keeps vertical, and accord with the design standard with the distance between the tunnel inner wall, after ending all upper hoop reinforcing bar supports, adopt prior art to carry out the ligature with upper longitudinal reinforcement and upper hoop reinforcing bar, the accuracy that can guarantee the size because of upper hoop reinforcing bar under supporting part 3's supporting role, under this basis, the size that can make the reinforcing bar net that forms between upper hoop reinforcing bar and the upper longitudinal reinforcement is also very accurate. In a similar way, also can support fixedly lower floor's hoop reinforcing bar to accomplish the ligature of lower floor's hoop reinforcing bar and lower floor's longitudinal reinforcement, it needs to notice that, because of the internal diameter of lower floor's longitudinal reinforcement is slightly littleer, consequently need adjust the distance between reinforcing bar and the tunnel inner wall through adjusting structure 5 according to the operating mode.

The supporting portion 3 includes a first supporting rod 301 and a second supporting rod 302 respectively disposed on two sides of the upright 2, the ends of the first supporting rod 301 and the second supporting rod 302 away from each other are fixed with a limiting mechanism 4, and the first supporting rod 301 and the second supporting rod 302 make telescopic movement on the upright 2 through an adjusting mechanism 5.

This embodiment then carries out specific implementation to supporting part 3, first bracing piece 301 and second bracing piece 302 through setting up in 2 both sides of stand then can realize, stop gear 4 through being located on the bracing piece then can carry on spacingly to the hoop reinforcing bar, the flexible of rethread bracing piece can extrude the hoop reinforcing bar, thereby guarantee the distance of hoop reinforcing bar and tunnel inner wall, and the bracing piece sets up the both sides at stand 2, can carry out balanced application of force to the hoop reinforcing bar, thereby make the hoop reinforcing bar can stabilize fixedly.

Referring to fig. 2, the limiting mechanism 4 includes a supporting block 401, and one side of the supporting block 401 close to the inner wall of the tunnel is sequentially provided with:

an opening 402 for the entry of the hoop reinforcement;

a bar placing groove 403 for placing the circumferential reinforcing bar;

and a rib clamping groove 404 with the shape matched with that of the annular reinforcing steel bar.

This embodiment then carries out concrete implementation to stop gear 4, mainly contact and support with the hoop reinforcing bar through supporting shoe 401, at concrete implementation in-process, the hoop reinforcing bar generally can be partial to tunnel center direction, can be great with the distance of tunnel inner wall promptly, consequently, need extrude it, opening 402 then can be used to the entering of reinforcing bar and put muscle groove 403, accomplish preliminary spacing of reinforcing bar, can guarantee that the hoop reinforcing bar is almost vertical, the skew angle is also basically zero, then through the extension of bracing piece, make with hoop reinforcing bar assorted card muscle groove 404 and the extrusion of hoop reinforcing bar mutually, under the limiting displacement in card muscle groove 404, the skew angle of hoop reinforcing bar can further be restoreed, thereby make it guarantee vertically in the at utmost, and under the extrusion in card muscle groove 404, the angle of hoop reinforcing bar and tunnel inner wall can be adjusted to the most reasonable position.

Referring to fig. 1, the first support rod 301 and the second support rod 302 are threaded rods, the upright column 2 is provided with through holes for the first support rod 301 and the second support rod 302 to penetrate through, the adjusting mechanism is an adjusting bolt, the adjusting bolt is connected with the opening of the through hole through a bearing and matched with the threaded rod, and the support block 401 is connected with the threaded rod through a bearing.

In this embodiment, the adjusting mechanism 5 is specifically implemented, and by screwing the adjusting nut 501, the threaded rod may be rotated, and since the adjusting nut 501 is connected to the through hole through the bearing, when the adjusting nut 501 rotates, the threaded rod may extend and contract in the through hole, so as to perform an adjusting function, and since the threaded rod may rotate, in order to avoid affecting the supporting block 401, the supporting block 401 and the threaded rod are connected through the bearing. It should be noted that the first support bar 301 and the second support bar 302 may be arranged in a top-bottom manner because the support bars are required to be located on the same longitudinal plane.

The bottom of stand 2 is equipped with slider 201, and base 1's top is equipped with spout 101 along tunnel length direction, and slider 201 activity joint is spacing through locking mechanism between slider 201 and the spout 101 in spout 101.

This embodiment is then to the activity between stand 2 and the base 1 carry out concrete implementation, through slider 201 and spout 101, stand 2 that be can be on base 1 along tunnel length direction motion to be convenient for adjust the position of stand 2, rethread locking mechanical system then can lock stand 2, thereby avoid stand 2 to take place to remove the problem that the precision that causes descends because of receiving external force

The sliding groove 101 comprises two sliding rails 102 symmetrically arranged along the length direction of the tunnel, a limiting groove 103 is formed in one side, close to the sliding block 201, of the sliding rail 102, a limiting block 202 is arranged at the position, corresponding to the limiting groove 103, of the sliding block 201, the locking mechanism comprises fixing plates 203 which are arranged on two sides of the sliding block 201 and located above the sliding rail 102, and locking bolts 204 are connected to the fixing plates 203 through threads.

In this embodiment, the fixing of the upright column 2 and the base 1 is optimized, and the position of the upright column 2 needs to be adjusted according to the working condition, and the adjustment range is not fixed, so that the upright column 2 can be fixed at any position by the above arrangement, that is, the locking bolt 204 is screwed, and at this time, the locking bolt 204 and the fixing plate 203 generate relative displacement, that is, the fixing plate 203 rises upwards, so that the limiting block 202 can be driven to rise and contact with the upper wall of the limiting groove 103 in a pressing manner, thereby achieving the fixing effect. Therefore, in this scheme, the limiting block 202 not only can play the role of assisting the sliding of the sliding block 201 in the sliding groove 101, and avoid the sliding to slip, but also can play the role of limiting the sliding block 201 at last.

The upright post 2 is detachably connected with the sliding block 201.

This embodiment then is the installation of optimizing stand 2 and base 1, in this scheme, slider 201 can select the lighter aluminum alloy of usefulness, the aluminum alloy material has lighter quality, through adopting the aluminum alloy material, make slider 201 portable, and be convenient for installation and dismantlement, the aluminum alloy material has stronger toughness, great hardness and stronger corrosion resistance, through adopting the aluminum alloy material, it is sturdy and durable to make slider 201, it is not fragile, the effectual life who prolongs slider 201, the effectual cost of having saved the engineering. Then the slider 201 and the upright post 2 are fixed, and the detachable mode can adopt the conventional means, such as clamping, bolt connection and the like.

The utility model provides a two lining reinforcement binding positioning system in tunnel, includes a plurality of locating racks, and a plurality of bases 1 set up along tunnel length direction, equidistant setting between a plurality of stands 2. This embodiment has then carried out concrete implementation to the application of locating rack, through above-mentioned setting, can accomplish the location of hoop reinforcing bar, and then ensures the accuracy of ligature.

Two adjacent bases 1 are connected to each other and form a base assembly.

This embodiment then is the installation of optimizing base 1, because of base 1 is single existence, be unfavorable for monolithic stationary stability and accuracy, consequently, need connect fixedly between to base 1, the connected mode can adopt conventional connected mode can, preferably joint, it forms to follow mutual joint on the tunnel length direction if base 1, base 1's one end is equipped with slot 105, base 1's the other end is equipped with inserted block 106, slot 105 and inserted block 106 phase-match, the upper end of inserted block 106 is equipped with location pearl 107, slot 105 corresponds location pearl 107 department and has seted up constant head tank 108, then be convenient for between the dismantlement through above-mentioned mode. The base assembly can also be equipped with scale 6 along tunnel length direction, and the interval between the stand 2 of being convenient for is adjusted to setting up scale 6.

The sliding grooves 101 between the bases 1 are communicated with each other to form a sliding groove assembly, the sliding rails 102 are evenly distributed with embedded grooves 104 along the length direction, and the embedded grooves 104 are communicated with the limiting grooves 103 and matched with the limiting blocks 202 in shape.

The movable range of the sliding block 201 can be further strengthened by the formation of the sliding groove assembly, that is, the adjusting range of the upright post 2 is increased, the installation of the sliding block 201 and the sliding groove 101 is optimized in the embodiment, and the limiting block 202 can enter the limiting groove 103 through the embedded groove 104, so that the installation and the disassembly of the sliding block 201 and the sliding groove 101 are completed. It should be noted that, since the size of the limiting block 202 and the size of the insertion groove 104 are small, the size of the fixing plate 203 can be increased adaptively in order to ensure the stability of the support of the upright 2.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. The utility model provides a two lining reinforcement locating racks in tunnel, its characterized in that, includes base (1), be equipped with stand (2) that can follow its length direction activity on base (1), be equipped with supporting part (3) on stand (2), be equipped with on supporting part (3) and be used for carrying out spacing stop gear (4) to the hoop reinforcing bar, still be equipped with adjustment mechanism (5) that are used for adjusting hoop reinforcing bar and tunnel inner wall distance on supporting part (3).

2. The tunnel secondary lining steel bar binding positioning frame according to claim 1, wherein the supporting portion (3) comprises a first supporting rod (301) and a second supporting rod (302) which are respectively arranged at two sides of the upright column (2), the limiting mechanisms (4) are fixed at the ends, far away from each other, of the first supporting rod (301) and the second supporting rod (302), and the first supporting rod (301) and the second supporting rod (302) do telescopic motion on the upright column (2) through the adjusting mechanisms (5).

3. The tunnel secondary lining steel bar binding positioning frame according to claim 2, wherein the limiting mechanism (4) comprises a supporting block (401), and one side of the supporting block (401) close to the inner wall of the tunnel is sequentially provided with:

an opening (402) for the entry of the hoop reinforcement;

a bar placing groove (403) for placing the annular reinforcing bar;

and a clamping rib groove (404) with the shape matched with that of the annular reinforcing steel bar.

4. The tunnel secondary lining steel bar binding positioning frame according to claim 3, wherein the first supporting rod (301) and the second supporting rod (302) are threaded rods, through holes for the first supporting rod (301) and the second supporting rod (302) to penetrate through are formed in the upright column (2), the adjusting mechanism (5) is an adjusting bolt (501), the adjusting bolt (501) is connected with the opening of the through holes through a bearing and matched with the threaded rods, and the supporting block (401) is connected with the threaded rods through a bearing.

5. The tunnel secondary lining steel bar binding positioning frame according to claim 1, wherein a sliding block (201) is arranged at the bottom end of the upright column (2), a sliding groove (101) is arranged at the top end of the base (1) along the length direction of the tunnel, the sliding block (201) is movably clamped in the sliding groove (101), and the sliding block (201) and the sliding groove (101) are limited through a locking mechanism.

6. The tunnel secondary lining steel bar binding positioning frame according to claim 5, wherein the sliding groove (101) comprises two sliding rails (102) symmetrically arranged along the length direction of the tunnel, a limiting groove (103) is formed in one side of each sliding rail (102) close to the corresponding sliding block (201), a limiting block (202) is arranged at the position, corresponding to the limiting groove (103), of the corresponding sliding block (201), the locking mechanism comprises fixing plates (203) arranged on two sides of the corresponding sliding block (201) and located above the corresponding sliding rail (102), and locking bolts (204) are connected to the fixing plates (203) in a threaded manner.

7. The tunnel secondary lining steel bar binding positioning frame according to claim 6, wherein the upright column (2) is detachably connected with the sliding block (201).

8. A tunnel secondary lining steel bar binding and positioning system is characterized by comprising a plurality of positioning frames according to any one of claims 1 to 7, a plurality of bases (1) are arranged along the length direction of a tunnel, and a plurality of upright posts (2) are arranged at equal intervals.

9. The tunnel secondary lining reinforcing steel bar binding and positioning system according to claim 8, wherein two adjacent bases (1) are connected with each other to form a base assembly.

10. The tunnel secondary lining steel bar binding and positioning system according to claim 9, wherein the sliding grooves (101) between the bases (1) are communicated with each other to form a sliding groove assembly, the sliding rails (102) are uniformly provided with embedded grooves (104) along the length direction, and the embedded grooves (104) are communicated with the limiting grooves (103) and matched with the limiting blocks (202) in shape.