Positioning device for tunnel inverted arch lining reserved steel bars

Abstract

The utility model belongs to the technical field of tunnel engineering, and particularly relates to a positioning device for tunnel inverted arch lining reserved steel bars. According to the positioning device for the tunnel inverted arch lining reserved steel bar, the tunnel depth direction ruler frame, the positioning clamping groove and the tunnel width direction positioning plate unit are arranged, so that the position of the steel bar is positioned through the positioning clamping groove in the tunnel depth direction ruler frame; the two ends of the tunnel width direction positioning plate unit are connected with the tunnel depth direction ruler frame at the front end and the tunnel depth direction ruler frame at the rear end respectively, the transverse intervals of the different rows of reserved steel bars in the tunnel width direction are controlled, meanwhile, the positioning clamping grooves also play a fixing role, and the structural integrity is higher; under tunnel blasting vibration and other factors, it is guaranteed that the constructed reinforcing steel bars do not displace, the construction efficiency is improved, and the construction quality is also guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of tunnel engineering, and particularly relates to a positioning device for tunnel inverted arch lining reserved steel bars. BACKGROUND

[0002] The inverted arch is a reverse arch structure arranged at the bottom of the tunnel to improve the stress condition of the upper support structure and is one of the main components of the tunnel structure, and the construction process mainly comprises the following steps: excavating the arch wall part, excavating the inverted arch part, leveling the concrete cushion, installing the inverted arch steel frame, performing the inverted arch primary support construction, installing the arch foot drainage pipe, binding the inverted arch secondary lining steel bars, erecting the formwork, pouring the inverted arch concrete and performing the inverted arch upper layer filling construction. Steel arch frames are arranged in the lining of the inverted arch, and the model, spacing and spacing between the steel frames of the inverted arch steel frame directly affect the structural strength of the inverted arch.

[0003] The conventional tunnel inverted arch lining reserved steel bar construction adopts the on-site line pulling method to position the horizontal position of the reserved steel bars, and this method is time-consuming, has large spacing errors and size line offset, thereby affecting the construction progress and effect, and then the tunnel inverted arch lining steel scale ruler is used to position the spacing of the reserved steel bars, mainly comprising a scale ruler arranged along the length direction of the tunnel, and recesses for embedding the steel bars are formed in the scale ruler according to the construction requirements, so as to position the reserved steel bars.

[0004] For example, the Chinese utility model patent with the patent publication number CN202938826U and the publication date of May 15, 2013 discloses a tunnel inverted arch lining steel scale ruler, which comprises two identical scale ruler frames, a plurality of recesses parallel to each other are formed in the upper portion of the scale ruler frame, and the circumferential main bars are embedded in the recesses.

[0005] The tunnel inverted arch lining steel scale ruler in the utility model patent has the following general structure principle: the recesses are through in the width direction of the scale ruler frame, the spacing of the recesses is equal to the spacing of the circumferential main bars, the width of the recesses is equal to the diameter of the circumferential main bars, and the depth of the recesses is greater than or equal to the radius of the circumferential main bars, so as to ensure that the circumferential main bars will not slide out of the recesses.

[0006] However, the tunnel inverted arch lining steel scale ruler has at least the following deficiencies in the actual use process, in other words, the technical problems to be solved by the utility model.

[0007] The scale ruler frame structure can only relatively fix one row of reserved steel bars in the depth direction of the tunnel, and the practicability is relatively poor.

[0008] Therefore, in view of the above, there is an urgent need for a new positioning device for tunnel inverted arch lining reserved steel bars, which can position the horizontal and vertical spacing of the reserved steel bars. UTILITY MODEL CONTENTS

[0009] The utility model provides a kind of positioning device for tunnel inverted arch lining reserved steel bars, it can be by being arranged tunnel depth direction ruler, positioning slot and the way of tunnel width direction positioning plate unit, so that: the position of steel bar is positioned by positioning slot on tunnel depth direction ruler, control the longitudinal spacing between reserved steel bars in tunnel depth direction, the tunnel depth direction ruler of tunnel depth direction ruler of tunnel width direction positioning plate unit two ends is connected respectively before and after, control the transverse spacing of different rows reserved steel bars in tunnel width direction, positioning slot also plays the role of fixation simultaneously, and the overall structure is stronger, under tunnel blasting vibration and other factors, it is guaranteed that the steel bar of having been constructed is not displaced, improve construction efficiency, also guarantee construction quality.

[0010] The utility model discloses a kind of positioning device for tunnel inverted arch lining reserved steel bars, structure includes two tunnel depth direction ruler, positioning slot for being arranged on the side surface of the tunnel depth direction ruler and being used to be inserted into reserved steel bar, and two tunnel width direction positioning plate units are respectively arranged at the position of two tunnel depth direction ruler ends.

[0011] Further preferred technical solutions are that the tunnel width direction positioning plate unit includes a connecting plate, two fixed bolts are arranged at both ends of the connecting plate and connected with the two tunnel depth direction rulers respectively.

[0012] Further preferred technical solutions are that the tunnel width direction positioning plate unit further includes a reinforcing nut arranged on the fixed bolt and used to connect the tunnel depth direction ruler.

[0013] Further preferred technical solutions are that the connecting plate is provided with two, the tunnel width direction positioning plate unit further includes two internal threaded cylinders arranged on the two connecting plates, and a threaded rod arranged on the two internal threaded cylinders.

[0014] Further preferred technical solutions are that the connecting plate is provided with two, the tunnel width direction positioning plate unit further includes a plug and a cylinder body arranged on the two connecting plates respectively and inserted with each other, a threaded groove arranged on the plug, a fixing hole arranged on the cylinder body, and a connecting bolt arranged on the threaded groove and the fixing hole.

[0015] Further preferred technical solutions are that the number of threaded grooves is 3-10.

[0016] Further preferred technical solutions are that the side surface of the tunnel depth direction ruler is further provided with a limiting plate unit for blocking all the reserved steel bars on the same side.

[0017] Further preferably, the limiting plate unit comprises a rotating plate hinged to the side end of the tunnel depth ruler and used for closing / opening the side end of the positioning slot, end holes respectively arranged at both ends of the rotating plate, a pin shaft arranged on the tunnel depth ruler and used for rotating the rotating plate by inserting one of the end holes, a threaded hole arranged on the tunnel depth ruler, and a fastening bolt arranged on the other end hole and used for inserting the threaded hole.

[0018] Further preferably, the limiting plate unit comprises a limiting ring arranged on the top end of the tunnel depth ruler and close to the position of the positioning slot and used for inserting the reserved steel bar.

[0019] Further preferably, the limiting plate unit comprises two arc-shaped clamps rotatably arranged on the top end of the rotating plate, hinged to each other at one end, and used for clamping the reserved steel bar, a bushing arranged on the other end of the arc-shaped clamp, and a connecting screw rod arranged on the two bushings and used for fixing the two arc-shaped clamps. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a top view of the utility model.

[0021] Figure 2 It is a side view of the utility model.

[0022] Figure 3 It is a connection schematic diagram of the tunnel width direction positioning plate unit in the utility model.

[0023] Figure 4 It is a structure schematic diagram of the tunnel width direction positioning plate unit in the utility model.

[0024] Figure 5 It is a connection schematic diagram of the limiting plate unit under the top view angle in the utility model.

[0025] Figure 6 It is a position schematic diagram of the arc-shaped clamp in the closed state in the utility model.

[0026] Figure 7 It is a position schematic diagram of the arc-shaped clamp in the open state in the utility model.

[0027] Figure 8 It is a connection schematic diagram under the front view angle in the utility model.

[0028] Figure 9 It is a use scene diagram of the utility model.

[0029] Figure 10 It is an enlarged view of the positioning state of the utility model.

[0030] In the drawings, the meanings of the respective marks are as follows:

[0031] Reserved steel bar a;

[0032] Tunnel depth ruler 1, positioning slot 2, tunnel width positioning plate unit 3, limiting plate unit 4;

[0033] Connecting horizontal plate 301, fixing bolt 302, reinforcing nut 303, inner threaded cylinder 304, threaded rod 305, plug 306, cylinder 307, threaded groove 308, fixing hole 309, connecting bolt 310, rotating plate 401, end hole 402, pin shaft 403, threaded hole 404, fastening bolt 405, limiting ring 406, arc-shaped hoop body 407, insertion hole 408, connecting screw 409, anti-skid damping piece 410. DETAILED DESCRIPTION

[0034] The following description is merely exemplary of the present application and is not intended to limit the scope of the present application.

[0035] As shown in the accompanying drawings Figures 1-10 A positioning device for tunnel inverted arch lining reserved steel bars, the structure comprises two tunnel depth rulers 1, positioning slots 2 arranged on the side of the tunnel depth rulers 1 and used for clamping the reserved steel bars a, and two tunnel width positioning plate units 3 arranged at the positions of the two ends of the two tunnel depth rulers 1 respectively.

[0036] In the embodiment, the tunnel depth ruler 1 is used for fixing and positioning the reserved steel bar a, so as to ensure that the constructed steel bars do not displace under the influence of tunnel blasting vibration and other factors. The tunnel depth ruler 1 is arranged along the depth direction of the tunnel, and considering the deformation of the material itself, a plurality of tunnel depth rulers 1 can be arranged in the tunnel. A plurality of positioning slots 2 are arranged on the side end of the tunnel depth ruler 1 in the depth direction, and the shape of the positioning slots 2 in the top view can be rectangular, circular or trapezoidal with the upper part wider than the lower part, etc., which are used for clamping the reserved steel bar a and are arranged according to the diameter of the reserved steel bar a. The positioning slots 2 can be used for limiting and fixing the reserved steel bars a in the same row in the depth direction of the tunnel, so as to prevent the reserved steel bars a from being dislocated under force and affecting the construction.

[0037] Finally, the tunnel depth ruler frame 1 is provided with two on both ends in the tunnel width direction, that is, at least a total of four rows of the reserved steel bars a on the left and right sides of the tunnel, the tunnel depth ruler frame 1 is arranged according to the number of rows of the reserved steel bars a, and each row of the reserved steel bars a is positioned and fixed, and then the tunnel width positioning plate unit 3 is used to fixedly connect the tunnel depth ruler frames 1 on the same side, so that the positions of the reserved steel bars a on the same side are consistent, and the overall stability of the reserved steel bars a is improved.

[0038] The tunnel width positioning plate unit 3 comprises a connecting horizontal plate 301, and two fixed bolts 302 are arranged at both ends of the connecting horizontal plate 301 and connected with the two tunnel depth ruler frames 1 respectively.

[0039] In the embodiment, the connecting horizontal plate 301 is used to fixedly connect the two tunnel depth ruler frames 1 on the same side, the spacing between the two adjacent rows of the reserved steel bars a is further increased, and the overall stability of the structure is improved. The fixed bolt 302 is used to fixedly connect the connecting horizontal plate 301 and the tunnel depth ruler frame 1.

[0040] The tunnel width positioning plate unit 3 further comprises a reinforcing nut 303 arranged on the fixed bolt 302 and used to connect the tunnel depth ruler frame 1.

[0041] In the embodiment, the reinforcing nut 303 is used to further fix the fixed bolt 302, and the connection strength between the fixed bolt 302 and the tunnel depth ruler frame 1 is increased.

[0042] The connecting horizontal plate 301 is provided with two, and the tunnel width positioning plate unit 3 further comprises two inner threaded cylinders 304 arranged on the two connecting horizontal plates 301 and a threaded rod 305 arranged on the two inner threaded cylinders 304.

[0043] In the embodiment, the connecting horizontal plate 301 is provided with two, the connecting horizontal plate 301 is provided with two inner threaded cylinders 304 respectively, the two inner threaded cylinders 304 are connected by the threaded rod 305, the spacing between the two connecting horizontal plates 301 can be adjusted by rotating the threaded rod 305, so that the tunnel width positioning plate unit 3 can adjust the spacing between the two tunnel depth ruler frames 1, and the reserved steel bars a with different spacings can be applied.

[0044] The connecting horizontal plates 301 are provided with two, the tunnel width positioning plate unit 3 further comprises plug blocks 306 and cylinders 307 respectively provided on the two connecting horizontal plates 301 and inserted with each other, threaded grooves 308 provided on the plug blocks 306, fixing holes 309 provided on the cylinders 307, and connecting bolts 310 provided on the threaded grooves 308 and the fixing holes 309.

[0045] In the embodiment, the connecting horizontal plates 301 are provided with two, the plug blocks 306 and the cylinders 307 are respectively provided on the two connecting horizontal plates 301, the connecting bolts 310 are inserted into the threaded grooves 308 and the fixing holes 309 on the plug blocks 306 and the cylinders 307, so that the spacing of the two connecting horizontal plates 301 can be adjusted, and the connecting bolts 310 can increase the connecting strength of the plug blocks 306 and the cylinders 307.

[0046] The number of the threaded grooves 308 is 3-10.

[0047] In the embodiment, the number of the threaded grooves 308 is preferably 3-10.

[0048] The side of the tunnel depth ruler 1 is further provided with a limiting plate unit 4 for blocking all the reserved steels a on the same side.

[0049] In the embodiment, the limiting plate unit 4 further limits the reserved steels a clamped into the positioning clamping grooves 2, preventing the reserved steels a from being forced out of the positioning clamping grooves 2. The limiting plate unit can close and limit the positioning clamping grooves 2 by a plate located at the side end of the tunnel depth ruler 1, or can be provided with a protrusion at the opening position of the positioning clamping groove 2, so that the reserved steels a can be clamped into the positioning clamping grooves 2, and the protrusion can block the reserved steels a to prevent them from falling off easily.

[0050] The limiting plate unit 4 comprises a rotating plate 401 hinged at the side end of the tunnel depth ruler 1 and used for closing / opening the side end of the positioning clamping groove 2, end head holes 402 respectively provided at both ends of the rotating plate 401, a pin shaft 403 provided on the tunnel depth ruler 1 and used for rotating the rotating plate 401 by being inserted into one of the end head holes 402, threaded holes 404 provided on the tunnel depth ruler 1, and fastening bolts 405 provided on the other end head hole 402 and used for being inserted into the threaded holes 404.

[0051] In the embodiment, the rotating plate 401 is arranged at the side end of the tunnel depth ruler 1 and located at the opening position of the positioning slot 2. The rotating plate 401 is used to close / open the positioning slot 2 by rotating, thereby facilitating the installation and positioning of the reserved steel bar a. The end hole 402 is arranged at the two ends of the rotating plate 401. The pin shaft 403 is arranged on one of the end holes 402. The pin shaft 403 is used to hinge the rotating plate 401 and the tunnel depth ruler 1, so that the rotating plate 401 can rotate relative to the tunnel depth ruler 1, thereby opening and closing the opening position of the positioning slot 2. The threaded hole 404 is arranged corresponding to the other end hole 402. The rotating plate 401 is rotated to a certain position around the pin shaft 403. The rotating plate 401 can close the opening position of the positioning slot 2. The fastening bolt 405 is used to fix the rotating plate 401, thereby preventing the reserved steel bar a from being separated from the positioning slot 2.

[0052] The limiting plate unit 4 includes a limiting ring 406 arranged on the top end of the tunnel depth ruler 1 and close to the positioning slot 2 and used for inserting the reserved steel bar a.

[0053] In the embodiment, the limiting ring 406 is arranged on the top end of the tunnel depth ruler 1 and is used to limit the reserved steel bar a by sleeving the reserved steel bar a. The limiting ring 406 can be fixed on the top end of the tunnel depth ruler 1 or arranged on the tunnel depth ruler 1 in a plug-in manner. The depth of the positioning slot 2 is greater than the diameter of the reserved steel bar a. After the reserved steel bar a is embedded in the positioning slot 2, there is a certain spacing from the rotating plate 401, thereby preventing the limiting ring 406 from blocking the opening / closing of the rotating plate 401. The anti-skid damping piece 410 can be arranged on the inner wall of the limiting ring 406, thereby reducing the impact of vibration on the reserved steel bar a and increasing the friction.

[0054] The limiting plate unit 4 includes two arc-shaped hoop bodies 407 arranged on the top end of the rotating plate 401 and hinged at one end and used for clamping the reserved steel bar a, a bushing 408 arranged on the other end of the arc-shaped hoop body 407, and a connecting screw 409 arranged on the two bushings 408 and used for fixing the two arc-shaped hoop bodies 407.

[0055] In the embodiment, one end of the arc-shaped hoop body 407 is rotatably arranged on the rotating plate 401, which can be hinged, and does not affect the rotation of the arc-shaped hoop body 407; the other end of the arc-shaped hoop body 407 is provided with the insertion hole 408, and the two arc-shaped hoop bodies 407 can be fixed through the connecting screw rod 409, so as to limit and fix the reserved steel bar a, and the anti-skid damping piece 410 can be arranged on the inner wall of the arc-shaped hoop body 407.

[0056] The embodiments of the utility model are described in detail above in combination with the drawings, but the utility model is not limited to the above-mentioned embodiments, and various modifications can be made within the knowledge range of ordinary skilled in the art without departing from the purpose of the utility model. These are all non-creative modifications, and are protected by the patent law as long as within the scope of the claims of the utility model.

Claims

1. A positioning device for tunnel invert formwork reinforcement, characterised in that: The structure comprises two tunnel depth direction rulers (1), positioning clamping grooves (2) arranged on the side of the tunnel depth direction rulers (1) and used for clamping reserved steel bars (a), and two tunnel width direction positioning plate units (3) arranged at the positions of the two ends of the two tunnel depth direction rulers (1) respectively, The side of the tunnel depth direction ruler (1) is further provided with a limiting plate unit (4) used for blocking all the reserved steel bars (a) on the same side, The limiting plate unit (4) comprises a rotating plate (401) hinged on the side end of the tunnel depth direction ruler (1) and used for closing / opening the side end of the positioning clamping groove (2), end hole (402) arranged at the two ends of the rotating plate (401) respectively, a pin shaft (403) arranged on the tunnel depth direction ruler (1) and used for rotating the rotating plate (401) by inserting one of the end holes (402), a threaded hole (404) arranged on the tunnel depth direction ruler (1), and a fastening bolt (405) arranged on the other end hole (402) and used for inserting the threaded hole (404), The limiting plate unit (4) comprises two arc-shaped clamping bodies (407) rotatably arranged on the top end of the rotating plate (401) and hinged at one end and used for clamping the reserved steel bars (a), a bushing (408) arranged on the other end of the arc-shaped clamping body (407), and a connecting screw rod (409) arranged on the two bushings (408) and used for fixing the two arc-shaped clamping bodies (407), The inner wall of the arc-shaped clamping body (407) is provided with anti-skid damping pieces (410).

2. The positioning device for tunnel inverted arch lining reserved steel bars according to claim 1, characterized in that: The tunnel width direction positioning plate unit (3) comprises a connecting horizontal plate (301), and two fixed bolts (302) arranged at the two ends of the connecting horizontal plate (301) and connected with the two tunnel depth direction rulers (1) respectively.

3. A positioning device for tunnel inverted arch lining reserved steel bars according to claim 2, characterized in that: The tunnel width direction positioning plate unit (3) further comprises a reinforcing nut (303) arranged on the fixed bolt (302) and used for connecting the tunnel depth direction ruler (1).

4. The positioning device for tunnel inverted arch lining reserved steel bars according to claim 2, characterized in that: The connecting horizontal plate (301) is provided with two, and the tunnel width direction positioning plate unit (3) further comprises two internal threaded cylinders (304) arranged on the two connecting horizontal plates (301), and a threaded rod (305) arranged on the two internal threaded cylinders (304).

5. The positioning device for tunnel inverted arch lining reserved steel bars according to claim 2, characterized in that: The connecting horizontal plate (301) is provided with two, and the tunnel width direction positioning plate unit (3) further comprises an insertion block (306) and a cylinder body (307) arranged on the two connecting horizontal plates (301) respectively and inserted with each other, a threaded groove (308) arranged on the insertion block (306), a fixed hole (309) arranged on the cylinder body (307), and a connecting bolt (310) arranged on the threaded groove (308) and the fixed hole (309).

6. A positioning device for tunnel invert formwork reinforcement reservation according to claim 5, characterized in that: The number of the threaded grooves (308) is 3-10.

7. The positioning device for tunnel inverted arch lining reserved steel bars according to claim 1, characterized in that: The limiting plate unit (4) comprises a limiting ring (406) arranged on the top end of the tunnel depth direction ruler (1) and close to the position of the positioning clamping groove (2) and used for inserting the reserved steel bars (a).

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