CN108035735B - Tunnel secondary lining steel bar accurate positioning device and method - Google Patents
Tunnel secondary lining steel bar accurate positioning device and method Download PDFInfo
- Publication number
- CN108035735B CN108035735B CN201711243710.7A CN201711243710A CN108035735B CN 108035735 B CN108035735 B CN 108035735B CN 201711243710 A CN201711243710 A CN 201711243710A CN 108035735 B CN108035735 B CN 108035735B
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- tunnel
- telescopic
- secondary lining
- positioning device
- steel bars
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 42
- 239000010959 steel Substances 0.000 title claims abstract description 42
- 238000000034 method Methods 0.000 title claims description 12
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 18
- 230000003014 reinforcing effect Effects 0.000 claims description 6
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 8
- 239000011241 protective layer Substances 0.000 abstract description 4
- 239000010410 layer Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000002787 reinforcement Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
- E21D11/107—Reinforcing elements therefor; Holders for the reinforcing elements
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses a precise positioning device for secondary lining steel bars in a tunnel, which comprises a plurality of telescopic structures arranged on a waterproof board paving trolley, wherein the plurality of telescopic structures are arranged along the circumferential direction of the cross section of the tunnel, the telescopic structures are provided with fine adjustment structures, each fine adjustment structure is composed of a plurality of screw rods arranged side by side along the direction of the tunnel, and the screw rods can move along the self axial direction. The position of the two lining steel bars can be accurately adjusted through the telescopic structure and the fine adjustment structure, and the device is suitable for linear and curved tunnels, particularly curved tunnels. The steel bar positioning device can effectively control the space between two lining steel bars and the thickness of a protective layer, and ensure the construction quality.
Description
Technical Field
The invention relates to the technical field of tunnel construction, in particular to a device and a method for accurately positioning secondary lining steel bars of a tunnel.
Background
In the tunnel construction process, the accurate positioning of the secondary lining steel bar binding is a great problem which restricts the quality of secondary lining construction. The prior art mainly uses the elasticity of reinforcing steel bars to bend the reinforcing steel bars into rings through manual work, the circular arc-shaped annular reinforcing steel bars which are manually finished cannot be accurately positioned, especially when the secondary lining section is a curve section, the installation quality of the secondary lining reinforcing steel bars is difficult to guarantee, and the phenomenon generally exists in the prior art and becomes a common fault and hidden danger of the quality of tunnel engineering.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a device and a method for accurately positioning two lining steel bars in a tunnel, wherein the position of the two lining steel bars is accurately adjusted.
In order to achieve the purpose, the device for accurately positioning the secondary lining steel bars in the tunnel, which is designed by the invention, is characterized in that: including setting up the telescopic extending structure on waterproof board shop hanging platform truck, extending structure has arranged a plurality ofly along the circumference of tunnel cross-section, the last fine-tuning structure that is provided with of extending structure, the fine-tuning structure comprises a plurality of screw rod of arranging side by side along the tunnel trend, self axial displacement can be followed to the screw rod.
Further, extending structure includes two at least telescopic links, the telescopic link is cup jointed by the ring that sets up on the waterproof board shop hanging platform truck, still be provided with the hasp that is used for restricting the telescopic link activity on the waterproof board shop hanging platform truck, fine tuning structural connection is at the telescopic link end.
Furthermore, the waterproof board paving and hanging trolley is provided with scale marks corresponding to the position of the telescopic rod, the minimum scale is 1cm, the precision of coarse adjustment can reach 1cm, and the telescopic rod is provided with an indicating line used for indicating the scale marks.
Further, screw rod one end is provided with detachable reinforcing bar fixture, the screw rod other end is provided with the afterbody handle. The detachable reinforcing bar fixture makes things convenient for the installation of this structure, adjusts the afterbody handle, can realize accurate regulation, conveniently adjusts the operation.
Furthermore, the reinforcing steel bar fixture is made of a steel pipe with a groove at one end, and a limiting plate is arranged at the bottom of the groove.
Furthermore, a positioning rod supporting piece is arranged on the telescopic structure, a plurality of nuts matched with the screw rods are arranged on the positioning rod supporting piece, and the nuts are sleeved on the screw rods.
In another aspect, the present invention further provides a method for positioning a device for accurately positioning a secondary lining steel bar in a tunnel, which is characterized by comprising the following steps:
moving the waterproof board paving and hanging trolley to a position in the tunnel where reinforcing steel bars need to be bound;
the fine adjustment structure is abutted against the steel bar at the position to be adjusted, the position of the telescopic rod is adjusted, and the steel bar is preliminarily positioned;
and the screw rod is adjusted, so that the accurate positioning of the reinforcing steel bar in the radial direction and the circumferential direction of the tunnel can be completed.
The invention has the advantages that:
1. the invention realizes the accurate positioning of the circumferential main reinforcement of the inner layer and the outer layer of the secondary lining of the tunnel, greatly improves the construction efficiency, and eliminates the hidden trouble of tunnel engineering quality caused by the space between two lining reinforcements and the shortage of protective layer culverts.
2. The telescopic structure and the accurate positioning structure are adopted to stretch back and forth to accurately position the circumferential ribs, the operation is simple, and the positioning effect is obvious.
3. According to the size of tunnel headroom start appropriate extending structure number to according to the reinforcing bar interval of design at any time adjusting screw rod interval, strengthen its practicality.
4. The traditional method utilizes the elasticity of the steel bars and manual bending positioning, so that the circumferential main bar interval is uneven, the stress of the steel bars is uneven after the secondary lining concrete construction is finished, cracks appear on the surface of a secondary lining structure, the internal steel bars are corroded, and the structural stress is influenced. The telescopic rod is used for greatly adjusting along the track direction, the distance can be accurately adjusted to 1cm, and the positioning efficiency of the steel bar is favorably improved; and the screw rod is rotated in a small range to be adjusted, so that the accuracy can be improved to 1mm, the positioning accuracy is improved, and the uniform stress of the annular main rib is ensured.
5. The positioning device is simply and firmly arranged on the waterproof board trolley.
6. The method is suitable for linear and curved tunnels, especially curved tunnels. The steel bar positioning device can effectively control the space between two lining steel bars and the thickness of a protective layer, and ensure the construction quality.
Drawings
Fig. 1 is a schematic structural diagram of a device for accurately positioning a secondary lining steel bar in a tunnel according to the present invention.
Fig. 2 is a schematic diagram of the telescopic structure and the fine adjustment structure of the present invention.
Fig. 3 is a schematic view of the locking structure of the present invention.
Fig. 4 is a schematic view of the ring structure of the present invention.
Fig. 5 is a schematic view of the screw nut of the present invention.
Fig. 6 is a schematic view of the reinforcing bar fixture according to the present invention.
In the figure: waterproof board paving and hanging trolley 1, telescopic rod 2, lock catch 4, ring 5, screw 6, nut 7, draw-in groove 8, locating rod support piece 9, limiting plate 10 and tail handle 11.
Detailed Description
The invention is described in further detail below with reference to the following figures and specific examples:
as shown in the figure, two lining reinforcing bar accurate positioning device in tunnel, including setting up the telescopic extending structure on waterproof board shop hanging platform truck 1, extending structure has arranged a plurality ofly along tunnel cross-section's circumference, is provided with the accurate adjustment structure on the extending structure, and the accurate adjustment structure comprises a plurality of screw rod 6 of arranging side by side along the tunnel trend, and self axial displacement can be followed to the screw rod.
Wherein, extending structure includes two at least telescopic links 2, and telescopic link 2 cup joints by setting up ring 5 on waterproof board shop trailer 1, still is provided with the hasp 4 that is used for restricting the activity of telescopic link 2 on the waterproof board shop trailer 1, and waterproof board shop trailer 1 is provided with the scale mark for 2 positions of telescopic link department, and the scale adopts centimetre as the unit, is provided with an indicator mark that is used for instructing the scale on the telescopic link 2.
The outer end of the telescopic rod 2 is connected with a positioning rod supporting piece 9, the positioning rod supporting piece 9 is an equilateral angle steel with the thickness of 50 multiplied by 3mm, a plurality of nuts 7 matched with the screw rods 6 are arranged on the positioning rod supporting piece 9, and the nuts 7 are sleeved on the screw rods 6. A detachable reinforcing steel bar clamp is arranged at one end of the screw 6, the reinforcing steel bar clamp is made of a steel pipe with a groove at one end, the length of the reinforcing steel bar clamp is about 5cm, a limiting plate 10 is arranged at the bottom of the groove, and the limiting plate 10 is formed by welding thin steel plates and is prevented from sliding on the screw; the other end of the screw rod 6 is provided with a tail handle 11. The telescopic rod 2 is utilized to greatly adjust along the direction of the rail, and can be accurate to 1cm, so that the positioning efficiency of the steel bar is improved; and the screw rod is rotated in a small range to be adjusted, so that the accuracy can be improved to 1mm, the positioning accuracy is improved, and the uniform stress of the annular main rib is ensured.
The invention also designs a positioning method of the device for accurately positioning the secondary lining steel bars in the tunnel, which comprises the following specific processes:
1. moving a waterproof board paving and hanging trolley 1 to a secondary lining reinforcing steel bar binding section;
2. the telescopic rod 2 moves to a designated position along the circular ring in a telescopic mode, the lock catch 4 is locked to prevent the telescopic rod from moving, the telescopic rod is large in adjustment distance range, and coarse adjustment of the device can be achieved;
3. the handle 11 at the tail part of the screw 6 is rotated to enable the positioning rod to move forwards or backwards along the nut 7, so that accurate positioning is realized;
4. a clamping groove 8 made of a steel pipe is sleeved at the front end of the screw 6, and a secondary lining steel bar is temporarily fixed;
5. binding steel bars;
6. and loosening the fastener 4 to integrally move the telescopic rod and the support piece to the designated position backwards, completing coarse adjustment before positioning the outer layer of steel bars, and then simultaneously adjusting the fine adjustment screw rods 6 at the two ends to complete precise positioning.
The invention has the following advantages: 1. the invention realizes the accurate positioning of the circumferential main reinforcement of the inner layer and the outer layer of the secondary lining of the tunnel, greatly improves the construction efficiency, and eliminates the hidden trouble of tunnel engineering quality caused by the space between two lining reinforcements and the shortage of protective layer culverts. 2. The screw rod with the reinforcing steel bar fixture stretches back and forth to accurately position the circumferential reinforcing steel bars, so that the operation is simple, and the positioning effect is obvious. 3. The number of the positioning devices is properly adjusted according to the size of the tunnel clearance, and the distance between the positioning rods is adjusted at any time according to the distance between the reinforcing steel bars in design, so that the practicability of the tunnel is enhanced. 4. The screw rod can move along the track by a large margin, which is beneficial to improving the positioning efficiency of the reinforcing steel bar. 5. The detachable clamping groove is arranged at the front end of the screw rod, and the clamping device is simple and convenient. 6. The tail of the screw rod is welded with a handle, and fine adjustment can be completed by rotating the handle, so that the operation is simple. 7. The positioning device is simply and firmly arranged on the waterproof board trolley.
The foregoing is only illustrative of the principles of the invention. The invention is not limited thereto, and insubstantial modifications of the invention shall fall within the scope of infringement of the invention.
Claims (7)
1. The utility model provides a two lining reinforcing bar accurate positioning device in tunnel which characterized in that: including setting up the telescopic extending structure on waterproof board shop hanging platform truck, extending structure has arranged a plurality ofly along the circumference of tunnel cross-section, the last fine-tuning structure that is provided with of extending structure, the fine-tuning structure comprises a plurality of screw rod of arranging side by side along the tunnel trend, self axial displacement can be followed to the screw rod.
2. The precise positioning device for the secondary lining steel bars in the tunnel according to claim 1, wherein: the telescopic structure comprises at least two telescopic rods, the telescopic rods are sleeved by a ring arranged on the waterproof board paving and hanging trolley, a lock catch used for limiting the movement of the telescopic rods is further arranged on the waterproof board paving and hanging trolley, and the fine adjustment structure is connected to the ends of the telescopic rods.
3. The precise positioning device for the secondary lining steel bars in the tunnel according to claim 2, is characterized in that: the waterproof board paving and hanging trolley is provided with scale marks relative to the position of the telescopic rod, and the telescopic rod is provided with an indicating line used for indicating the scales.
4. The precise positioning device for the secondary lining steel bars in the tunnel according to claim 1, wherein: one end of the screw rod is provided with a detachable reinforcing steel bar fixture, and the other end of the screw rod is provided with a tail handle.
5. The precise positioning device for the secondary lining steel bars in the tunnel according to claim 4, wherein: the steel bar fixture is made of a steel pipe with a groove formed in one end, and a limiting plate is arranged at the bottom of the groove.
6. The precise positioning device for the secondary lining steel bars in the tunnel according to claim 1, wherein: the telescopic structure is provided with a positioning rod supporting piece, the positioning rod supporting piece is provided with a plurality of nuts matched with the screw rods, and the nuts are sleeved on the screw rods.
7. The method for positioning the precise positioning device for the secondary lining steel bars in the tunnel according to claim 1, which comprises the following steps:
moving the waterproof board paving and hanging trolley to a position in the tunnel where reinforcing steel bars need to be bound;
the method comprises the following steps of (1) enabling a fine adjustment structure to abut against a steel bar at a position to be adjusted, adjusting the position of a telescopic structure, and preliminarily positioning the steel bar, wherein a clamping groove for temporarily fixing a secondary lining steel bar is formed in the end of the fine adjustment structure;
and the screw rod is adjusted, so that the precise positioning of the reinforcing steel bar in the radial direction and the circumferential direction of the tunnel can be completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711243710.7A CN108035735B (en) | 2017-11-30 | 2017-11-30 | Tunnel secondary lining steel bar accurate positioning device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711243710.7A CN108035735B (en) | 2017-11-30 | 2017-11-30 | Tunnel secondary lining steel bar accurate positioning device and method |
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| Publication Number | Publication Date |
|---|---|
| CN108035735A CN108035735A (en) | 2018-05-15 |
| CN108035735B true CN108035735B (en) | 2020-06-16 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109356611B (en) * | 2018-08-28 | 2020-10-16 | 中铁二十五局集团第四工程有限公司 | Positioning equipment of hoop rib for tunnel construction |
| CN110185479B (en) * | 2019-06-12 | 2022-04-08 | 中建七局第四建筑有限公司 | Tunnel secondary lining circumferential steel bar positioning control device and use method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202300426U (en) * | 2011-10-31 | 2012-07-04 | 招商局重庆交通科研设计院有限公司 | Trolley for precisely positioning colligated secondarily lined steel bars of tunnel |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1472684A1 (en) * | 1987-05-19 | 1989-04-15 | Всесоюзный Научно-Исследовательский И Проектно-Конструкторский Угольный Институт | Formwork shield |
| CN2755224Y (en) * | 2004-11-12 | 2006-02-01 | 卢兴明 | Template supporter |
| CN204371366U (en) * | 2014-12-23 | 2015-06-03 | 上海建工材料工程有限公司 | A kind of main muscle positioner of tunnel lining prefabricated pipe section |
| CN104711996B (en) * | 2015-02-16 | 2016-09-14 | 中交四航局第二工程有限公司 | A kind of end box hat installs rackwork and operational approach |
| CN107387127A (en) * | 2017-09-13 | 2017-11-24 | 中交公局桥隧工程有限公司 | A kind of tunnel inverted arch reserves ring muscle positioning fixture and application method |
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- 2017-11-30 CN CN201711243710.7A patent/CN108035735B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202300426U (en) * | 2011-10-31 | 2012-07-04 | 招商局重庆交通科研设计院有限公司 | Trolley for precisely positioning colligated secondarily lined steel bars of tunnel |
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| CN108035735A (en) | 2018-05-15 |
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