CN110185479B - Tunnel secondary lining circumferential steel bar positioning control device and use method thereof - Google Patents
Tunnel secondary lining circumferential steel bar positioning control device and use method thereof Download PDFInfo
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- CN110185479B CN110185479B CN201910508391.0A CN201910508391A CN110185479B CN 110185479 B CN110185479 B CN 110185479B CN 201910508391 A CN201910508391 A CN 201910508391A CN 110185479 B CN110185479 B CN 110185479B
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 105
- 239000010959 steel Substances 0.000 title claims abstract description 105
- 238000000034 method Methods 0.000 title claims abstract description 23
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims abstract description 38
- 238000005259 measurement Methods 0.000 claims abstract description 11
- 238000009434 installation Methods 0.000 claims abstract description 5
- 238000010276 construction Methods 0.000 claims description 13
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 238000007689 inspection Methods 0.000 abstract description 4
- 238000012372 quality testing Methods 0.000 abstract description 3
- 239000011241 protective layer Substances 0.000 description 3
- 230000002787 reinforcement Effects 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000012797 qualification Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 239000010410 layer Substances 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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- 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
- E21D11/14—Lining predominantly with metal
- E21D11/18—Arch members ; Network made of arch members ; Ring elements; Polygon elements; Polygon elements inside arches
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- 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
- E21D11/40—Devices or apparatus specially adapted for handling or placing units of linings or supporting units for tunnels or galleries
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- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
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Abstract
The invention discloses a method for controlling and using the circumferential steel bar positioning of a secondary lining in a tunnel, which comprises the steps of S1 installation, S2 taking, S3 measurement, S4 circumferential steel bar positioning, S5 positioning cross bar withdrawing and 6 calculation principle of scale value of a measuring bar to be adjusted; the device has the advantages that the device measures the intermediate data through the tape measure, is simple and easy to operate, and solves the problem of difficulty in accurate positioning of the reinforcing steel bars in the curve section; quality testing personnel can check whether the annular reinforcing steel bars are clamped out at the reinforcing steel bar interval by reading scale values on the measuring rod, can judge the binding position deviation of the two lining reinforcing steel bars, and simplifies the flow of quality inspection. The positioning cross rod of the device is removed after the whole binding of the steel bar framework is finished, the condition that the two lining rings shift to the steel bars due to uneven stress in the binding process is eliminated, and the steel bar binding forming quality is ensured.
Description
Technical Field
The invention relates to the field of tunnel secondary lining circumferential steel bar positioning control, in particular to a tunnel secondary lining circumferential steel bar positioning control device and a using method thereof.
Background
The thickness of the steel bar protection layer of the secondary lining of the tunnel is of great importance, and the safety and the service life of the tunnel structure are concerned. At present, the thickness qualification rate of the steel bar protective layer in tunnel construction is very low. In the actual construction of the tunnel, the curve section line type of the secondary lining annular reinforcing steel bars is realized by manual bending of field workers according to the section of the tunnel. The manual bending mode can not meet the curve requirement of construction drawings on the circumferential reinforcing steel bars of the two lining linings and can not effectively control the thickness of the reinforcing steel bar protective layer. In view of the above, in order to improve the thickness qualification rate of the protective layer of the secondary lining steel bar, a positioning control device for the circumferential steel bar needs to be developed.
Disclosure of Invention
The invention aims to solve the problems and designs a device for controlling the positioning of a secondary lining ring of a tunnel to a steel bar and a using method thereof.
The technical scheme of the invention is that the method for positioning the circumferential steel bars of the tunnel secondary lining comprises the steps of S1 installation, S2 taking, S3 measurement, S4 circumferential steel bar positioning, S5 positioning transverse bar withdrawing and 6 planned adjustment of measuring bar scale value calculation principle;
step S1: selecting the vertical and horizontal spacing of the measuring device according to the size of the section of the tunnel and the control precision;
step S2: the tunnel secondary lining steel bar binding trolley reaches a steel bar binding position through a traveling system;
step S3: calculating the distance between the circumferential reinforcing steel bars at the outermost sides of the two linings on the horizontal line of the longitudinal slope surface of the tunnel according to a construction drawing, and calculating the scale value of the measurement rod to be adjusted;
step S4: an operator unscrews the positioning bolts on the two tunnel linings on the same horizontal line and the steel bar positioning control device, adjusts the measuring rod to enable the scale to reach a to-be-adjusted scale value, screws the positioning bolts, fixes the measuring rod, enables the positioning cross rod to reach a preset position, bends the circumferential steel bar to enable the circumferential steel bar to just abut against the outer side of the positioning cross rod and be in the steel bar spacing clamping position;
step S5: after all the steel bars are bound, loosening the positioning bolts, adjusting the measuring rod to the minimum scale, screwing the positioning bolts, fixing the positioning cross rod, and moving the tunnel secondary lining steel bar binding trolley to the secondary lining position of the next plate;
step 6: the distance L of the same circumferential reinforcing steel bar of the horizontal line Na on the cross section can be obtained by inquiring a construction drawing and calculating, the distance M between the locators of the horizontal line Na on the cross section can be obtained by measuring with a tape measure, the distances P1 and P2 between the outer side of the trolley leg of the horizontal line Na on the cross section and the edge line of the two linings can be obtained by measuring with the tape measure, and the simulated adjustment scale value L1 of the left measuring rod is (L-M) - (P1-P2)/2. The right-side measuring rod quasi-scale value L2 is (L-M) + (P1-P2)/2, and similarly, the measuring rod quasi-scale value on the horizontal line Nb on the cross section can be obtained by calculation;
the device for controlling the circumferential positioning of the reinforcing steel bars in the tunnel secondary lining adopted by the method comprises a fixer, positioning bolts, a measuring rod, a positioning cross rod and a reinforcing steel bar binding trolley, wherein the fixer is arranged on an operation platform of the reinforcing steel bar binding trolley, the measuring rod penetrates through the left side and the right side of the fixer, the positioning bolts are inserted on the front wall surface of the fixer, the top end of the positioning bolts touches the measuring rod penetrating through the inside of the fixer, the measuring rod is controlled to be fixed or movable in the fixer so as to move left and right, the positioning cross rod is in rigid vertical connection with the measuring rod, and reinforcing steel bar spacing clamping positions are arranged on the positioning cross rod at equal intervals.
And the fixer is rigidly connected with the tunnel secondary lining steel bar binding trolley.
In the step S3, the measuring tape may be used to measure the curved section of the steel bar at the same time.
More than two devices need to be installed on the same horizontal position and are matched with the positioning cross rod and the steel bar spacing clamping position on the positioning cross rod.
The positioning bolt and the measuring rod are in the same horizontal plane and are perpendicular to the direction of the measuring rod.
The device can also be fixed on other suitable positions of the steel bar binding trolley.
The tunnel secondary lining circumferential steel bar positioning control device manufactured by the technical scheme of the invention and the use method thereof measure intermediate data through the tape measure, are simple and easy to implement, solve the difficulty of accurately positioning the steel bars in the curve section, and a quality inspector can judge the binding position deviation of the secondary lining steel bars and simplify the quality inspection process by reading scale values on the measuring rod and checking whether the circumferential steel bars are clamped out at the intervals of the steel bars.
Drawings
FIG. 1 is a schematic structural diagram of a device for controlling positioning of circumferential steel bars in a tunnel secondary lining according to the present invention;
FIG. 2 is a partial side view of a device for controlling positioning of reinforcing steel bars in a secondary lining of a tunnel according to the present invention;
in the figure, 1, the steel bar is clamped at intervals; 2. a holder; 3. positioning the bolt; 4. a measuring rod; 5. positioning the cross bar; 6 and a steel bar binding trolley.
Detailed Description
The following describes the present invention in detail with reference to the accompanying drawings, and as shown in fig. 1-2, a device for controlling positioning of circumferential steel bars in a tunnel with two liners and a method for controlling positioning of circumferential steel bars in a tunnel with two liners, the method for controlling positioning of circumferential steel bars in a tunnel with two liners includes steps of S1 installation, S2 fetching, S3 measurement, S4 circumferential steel bar positioning, S5 positioning cross bar withdrawing, and step 6 is a calculation principle of a scale value of a measuring bar to be adjusted; step S1: selecting the vertical and horizontal spacing of the measuring device according to the size of the section of the tunnel and the control precision; step S2: the tunnel secondary lining steel bar binding trolley reaches a steel bar binding position through a traveling system; step S3: calculating the distance between the circumferential reinforcing steel bars at the outermost sides of the two linings on the horizontal line of the longitudinal slope surface of the tunnel according to a construction drawing, and calculating the scale value of the measurement rod to be adjusted; step S4: an operator unscrews the positioning bolts on the two tunnel linings on the same horizontal line and the steel bar positioning control device, adjusts the measuring rod to enable the scale to reach a to-be-adjusted scale value, screws the positioning bolts, fixes the measuring rod, enables the positioning cross rod to reach a preset position, bends the circumferential steel bar to enable the circumferential steel bar to just abut against the outer side of the positioning cross rod and be in the steel bar spacing clamping position; step S5: after all the steel bars are bound, loosening the positioning bolts, adjusting the measuring rod to the minimum scale, screwing the positioning bolts, fixing the positioning cross rod, and moving the tunnel secondary lining steel bar binding trolley to the secondary lining position of the next plate; step 6: the distance L of the same circumferential reinforcing steel bar of the horizontal line Na on the cross section can be obtained by inquiring a construction drawing and calculating, the distance M between the locators of the horizontal line Na on the cross section can be obtained by measuring with a tape measure, the distances P1 and P2 between the outer side of the trolley leg of the horizontal line Na on the cross section and the edge line of the two linings can be obtained by measuring with the tape measure, and the simulated adjustment scale value L1 of the left measuring rod is (L-M) - (P1-P2)/2. The right-side measuring rod quasi-scale value L2 is (L-M) + (P1-P2)/2, and similarly, the measuring rod quasi-scale value on the horizontal line Nb on the cross section can be obtained by calculation; the method comprises the steps that a tunnel secondary lining circumferential steel bar positioning control device adopted by the method comprises a fixer 2, a positioning bolt 3, a measuring rod 4, a positioning cross rod 5 and a steel bar binding trolley 6, wherein the fixer 2 is arranged on an operation platform of the steel bar binding trolley 6, the measuring rod 4 penetrates through the left side and the right side of the fixer 2, the positioning bolt 3 is inserted on the front wall surface of the fixer 2, the top end of the positioning bolt is contacted with the measuring rod 4 penetrating through the inside of the fixer 2, the measuring rod 4 is controlled to fix or move in the fixer 2 so as to move left and right, the positioning cross rod 5 is in rigid vertical connection with the measuring rod 4, and steel bar interval clamping positions 1 are arranged on the positioning cross rod 5 at equal intervals; the fixer 2 is rigidly connected with the tunnel secondary lining steel bar binding trolley 6; when the step S3 is performed, the measuring tape may be used to measure the curved section of the steel bar; the more than two devices need to be arranged at the same horizontal position and are matched with the positioning cross rod 5 and the reinforcing steel bar spacing clamp position 1 on the positioning cross rod; the positioning bolt 3 and the measuring rod 4 are in the same horizontal plane and are perpendicular to the measuring rod 4 in direction; the device can also be fixed on other suitable positions of the steel bar binding trolley 6.
The method is characterized by comprising the steps of S1 installation, S2 taking, S3 measurement, S4 annular steel bar positioning, S5 positioning cross bar withdrawing and 6 simulated adjustment of a measuring bar scale value calculation principle; step S1: selecting the vertical and horizontal spacing of the measuring device according to the size of the section of the tunnel and the control precision; step S2: the tunnel secondary lining steel bar binding trolley reaches a steel bar binding position through a traveling system; step S3: calculating the distance between the circumferential reinforcing steel bars at the outermost sides of the two linings on the horizontal line of the longitudinal slope surface of the tunnel according to a construction drawing, and calculating the scale value of the measurement rod to be adjusted; step S4: an operator unscrews the positioning bolts from the two tunnel linings on the same horizontal line to the steel bar positioning control device, adjusts the measuring cross rod to enable the scale to reach a to-be-adjusted scale value, screws the positioning bolts, fixes and adjusts the measuring rod, enables the positioning cross rod to reach a preset position, bends the circumferential steel bar to enable the circumferential steel bar to just abut against the outer side of the positioning cross rod and be in the steel bar space clamping position; step S5: after all the steel bars are bound, loosening the positioning bolts, adjusting the measuring rod to the minimum scale, screwing the positioning bolts, fixing and adjusting the positioning cross rod, and moving the tunnel secondary lining steel bar binding trolley to the secondary lining position of the next plate; step 6: the distance L of the same circumferential reinforcing steel bar of the horizontal line Na on the cross section can be obtained by inquiring a construction drawing and calculating, the distance M between the locators of the horizontal line Na on the cross section can be obtained by measuring with a tape measure, the distances P1 and P2 between the outer side of the trolley leg of the horizontal line Na on the cross section and the edge line of the two linings can be obtained by measuring with the tape measure, and the simulated adjustment scale value L1 of the left measuring rod is (L-M) - (P1-P2)/2. The right-side measuring rod quasi-scale value L2 is (L-M) + (P1-P2)/2, and similarly, the measuring rod quasi-scale value on the horizontal line Nb on the cross section can be obtained by calculation; the device comprises a fixer 2, a positioning bolt 3, a measuring rod 4, a positioning cross rod 5 and a steel bar binding trolley 6, wherein the fixer 2 is arranged on a working platform of the steel bar binding trolley 6, the measuring rod 4 penetrates through the left side and the right side of the fixer 2, the positioning bolt 3 is inserted on the front wall surface of the fixer 2, the top end of the positioning bolt touches the measuring rod 4 penetrating through the inside of the fixer 2, the measuring rod 4 is controlled to be fixed or movable in the fixer 2 so as to move left and right, the positioning cross rod 5 is in rigid vertical connection with the measuring rod 4, and steel bar spacing clamping positions 1 are arranged on the positioning cross rod 5 at equal intervals; the fixer 2 is rigidly connected with the tunnel secondary lining steel bar binding trolley 6; in the step S3, tape measure measurement can be performed at the same time, so as to measure the reinforcing steel bar of the curve segment; the two devices need to be arranged at the same horizontal position and are matched with the positioning cross rod 4 and the reinforcing steel bar spacing clamp position 1 on the positioning cross rod; the positioning bolt 3 and the measuring rod 4 are in the same horizontal plane and are perpendicular to the measuring rod 4 in direction; the device can be fixed or can be used for binding the steel bars at other proper positions of the trolley 6, the device measures intermediate data through a measuring tape, is simple and feasible, and solves the difficulty of accurately positioning the steel bars at the curve section; quality testing personnel can check whether the annular reinforcing steel bars are clamped out at the reinforcing steel bar interval by reading scale values on the measuring rod, can judge the binding position deviation of the two lining reinforcing steel bars, and simplifies the flow of quality inspection. The positioning cross rod of the device is removed after the whole binding of the steel bar framework is finished, the condition that the two lining rings shift to the steel bars due to uneven stress in the binding process is eliminated, and the steel bar binding forming quality is ensured.
In the present embodiment, the positioning and measuring device 1 includes a holder 2, a positioning bolt 3, a measuring rod 4, and a positioning cross bar 5. The measuring rod 4 penetrates through the fixer 2; the positioning bolt 3 is fixed on the fixer 2; the positioning bolt 3 and the measuring rod 4 are in the same horizontal plane and are vertical to the measuring rod 4; the positioning bolt 3 can be screwed or loosened to control the measuring rod 4 to be fixed or movable in the fixer 2; the positioning cross rod 5 is rigidly and vertically connected with the measuring rod 4; the positioning cross rod 5 is provided with reinforcing steel bar spacing clamping positions 6 at equal intervals; the device is used in the stage of binding the secondary lining reinforcing steel bars of the tunnel, and is fixedly arranged on an operation platform 8 or other proper positions of the secondary lining reinforcing steel bar binding trolley of the tunnel; selecting the vertical and horizontal spacing of the device according to the size of the section of the tunnel and the control precision; the connection between the fixer 2 and the tunnel secondary lining steel bar binding trolley 6 can be welding, bolting or other reliable connection modes; more than two devices are arranged on the same horizontal position, and can be matched with the positioning cross rod 4 and the steel bar spacing clamping position 1 on the positioning cross rod to position the circumferential steel bar 9; when the tunnel secondary lining reinforcement trolley 1 reaches the reinforcement binding position 6 through a walking system and walks, the trolley is ensured to be parallel to the section of the tunnel as much as possible; calculating the distance between the second lining outermost side circumferential reinforcing steel bars 9 on the horizontal line of the longitudinal slope surface of the tunnel according to a construction drawing, and calculating the scale value of the measurement rod to be adjusted; and (3) loosening the positioning bolt 3 from the second lining ring of the tunnel on the same horizontal line of an operator to the reinforcing steel bar positioning control device, adjusting the measuring cross rod 4 to enable the scale to reach a to-be-adjusted scale value, screwing the positioning bolt 3, fixing the adjusting measuring rod 4, and enabling the positioning cross rod 5 to reach a preset position. The annular reinforcing steel bars are bent to just abut against the outer side of the positioning cross rod 5 and are positioned in the reinforcing steel bar spacing clamping positions 1. At this point, the circumferential reinforcement positioning is completed; after all the steel bars are bound, loosening the positioning bolts 3, adjusting the measuring rods 4 to the minimum scale, screwing the positioning bolts 3, fixing and adjusting the positioning cross rods 5, and moving the tunnel secondary lining steel bar binding trolley to the secondary lining position of the next plate; the distance L of the same circumferential reinforcing steel bar of the horizontal line Na on the cross section can be obtained by inquiring a construction drawing and calculating, the distance M between the locators of the horizontal line Na on the cross section can be obtained by measuring with a tape measure, the distances P1 and P2 between the outer side of the trolley leg of the horizontal line Na on the cross section and the edge line of the two linings can be obtained by measuring with the tape measure, and the simulated adjustment scale value L1 of the left measuring rod is (L-M) - (P1-P2)/2. The right side bar pseudo-scale value L2 ═ (L-M) + (P1-P2)/2; similarly, the scale value to be adjusted of the measuring rod scale value on the horizontal line Nb on the cross section can be obtained through calculation, the device measures intermediate data through the tape measure, the operation is simple and easy, and the difficulty in accurately positioning the reinforcing steel bar of the curve section is solved; quality testing personnel can check whether the annular reinforcing steel bars are clamped out at the reinforcing steel bar interval by reading scale values on the measuring rod 4, can judge the binding position deviation of the two lining reinforcing steel bars, and simplifies the flow of quality inspection. The positioning cross rod 5 of the device is removed after the whole binding of the steel bar framework is finished, the condition that the two lining rings shift to the steel bars due to uneven stress in the binding process is eliminated, and the steel bar binding forming quality is ensured.
The technical solutions described above only represent the preferred technical solutions of the present invention, and some possible modifications to some parts of the technical solutions by those skilled in the art all represent the principles of the present invention, and fall within the protection scope of the present invention.
Claims (6)
1. The method for controlling the circumferential steel bar positioning and using of the secondary lining in the tunnel is characterized by comprising the steps of S1 installation, S2 taking, S3 measurement, S4 circumferential steel bar positioning, S5 positioning cross bar withdrawing and 6 calculation principle of the scale value of the measuring bar to be adjusted;
the device for controlling the positioning of the circumferential reinforcing steel bars of the secondary lining of the tunnel comprises a fixer
(2) The device comprises a positioning bolt (3), a measuring rod (4), a positioning cross rod (5) and a steel bar binding trolley (6), wherein the fixer (2) is arranged on an operation platform of the steel bar binding trolley (6), the measuring rod (4) penetrates through the left side and the right side of the fixer (2), the positioning bolt (3) is inserted on the front wall surface of the fixer (2), the top end of the positioning bolt touches the measuring rod (4) penetrating through the inside of the fixer (2), the measuring rod (4) is controlled to fix or move in the fixer (2) so as to move left and right, the positioning cross rod (5) is rigidly and vertically connected with the measuring rod (4), and steel bar spacing clamping positions (1) are arranged on the positioning cross rod (5) at equal intervals;
step S1: selecting the vertical and horizontal spacing of the tunnel secondary lining circumferential steel bar positioning control device according to the size of the section of the tunnel and the control precision;
step S2: the tunnel secondary lining steel bar binding trolley reaches a steel bar binding position through a traveling system;
step S3: calculating the distance between the circumferential reinforcing steel bars at the outermost sides of the two linings on the horizontal line of the longitudinal slope surface of the tunnel according to a construction drawing, and calculating the scale value of the measurement rod to be adjusted;
step S4: an operator unscrews the positioning bolts on the two tunnel linings on the same horizontal line and the steel bar positioning control device, adjusts the measuring rod to enable the scale to reach a to-be-adjusted scale value, screws the positioning bolts, fixes the measuring rod, enables the positioning cross rod to reach a preset position, bends the circumferential steel bar to enable the circumferential steel bar to just abut against the outer side of the positioning cross rod and be in the steel bar spacing clamping position;
step S5: after all the steel bars are bound, loosening the positioning bolts, adjusting the measuring rod to the minimum scale, screwing the positioning bolts, fixing the positioning cross rod, and moving the tunnel secondary lining steel bar binding trolley to the secondary lining position of the next plate;
step S6: the distance L of the same circumferential steel bar of a horizontal line Na on the cross section is obtained by inquiring a construction drawing and calculating, the distance M between locators of the horizontal line Na on the cross section is obtained by measuring a tape measure, the distances P1 and P2 between the outer side of a trolley leg of the horizontal line Na on the cross section and the edge line of the two lining are obtained by measuring the tape measure, and the simulated adjustment scale value L1= (L-M) - (P1-P2)/2 of the left side measuring rod is obtained; the rod scale pseudo-scale value L2= (L-M) + (P1-P2)/2 on the right side, and similarly, the rod scale pseudo-scale value on the horizontal line Nb on the cross section is calculated.
2. The method for controlling and using the positioning of the secondary lining ring to the steel bars in the tunnel according to claim 1, wherein the fixer (2) is rigidly connected with the secondary lining steel bar binding trolley (6) of the tunnel.
3. The method for controlling the positioning of the tunnel secondary lining to the steel bars according to claim 1, wherein the step S3 is performed by measuring the steel bars of the curved sections with a measuring tape.
4. The method for controlling the circumferential positioning of the steel bars in the tunnel secondary lining according to claim 1, wherein more than two devices are installed at the same horizontal position and matched with the positioning cross rod (5) and the steel bar spacing clip (1) thereon.
5. The method for controlling the positioning of the secondary tunnel lining to the steel bars according to claim 1, wherein the positioning bolts (3) and the measuring rods (4) are in the same horizontal plane and are perpendicular to the direction of the measuring rods (4).
6. The method for controlling the positioning of the secondary lining of the tunnel to the steel bars according to the claim 1 is characterized in that the device can be also arranged on other suitable positions of the steel bar binding trolley (6).
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| CN201910508391.0A CN110185479B (en) | 2019-06-12 | 2019-06-12 | Tunnel secondary lining circumferential steel bar positioning control device and use method thereof |
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| CN201910508391.0A CN110185479B (en) | 2019-06-12 | 2019-06-12 | Tunnel secondary lining circumferential steel bar positioning control device and use method thereof |
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| CN110185479B true CN110185479B (en) | 2022-04-08 |
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| CN111271094B (en) * | 2020-03-03 | 2021-02-26 | 中铁工程服务有限公司 | Mountain tunnel secondary lining reinforcing bar mechanized operation complete sets |
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| JP2001303900A (en) * | 2000-04-26 | 2001-10-31 | Hitachi Engineering & Services Co Ltd | Device and method for measuring pitch of bolt hole of steel segment for tunnel and measuring method of number of segment therefor |
| CN202788875U (en) * | 2012-09-25 | 2013-03-13 | 中铁十一局集团第五工程有限公司 | Tunnel second lining steel bar banding scaffolding |
| CN206205907U (en) * | 2016-10-27 | 2017-05-31 | 中交一公局第二工程有限公司 | Recyclable tunnel double-lining reinforcing bar colligation positioner |
| CN108035735A (en) * | 2017-11-30 | 2018-05-15 | 中国冶集团有限公司 | A kind of tunnel double-lining reinforcing bar accurate positioning device and method |
| CN208220819U (en) * | 2018-05-23 | 2018-12-11 | 中建七局第四建筑有限公司 | A kind of one-tunnel one-track tunnel change one-tunnel two-tracks constructing tunnel device |
| CN208619129U (en) * | 2018-08-30 | 2019-03-19 | 中铁一局集团有限公司 | A kind of tunnel-liner circumferential reinforcement positioning device |
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2019
- 2019-06-12 CN CN201910508391.0A patent/CN110185479B/en active Active
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| JP2001303900A (en) * | 2000-04-26 | 2001-10-31 | Hitachi Engineering & Services Co Ltd | Device and method for measuring pitch of bolt hole of steel segment for tunnel and measuring method of number of segment therefor |
| CN202788875U (en) * | 2012-09-25 | 2013-03-13 | 中铁十一局集团第五工程有限公司 | Tunnel second lining steel bar banding scaffolding |
| CN206205907U (en) * | 2016-10-27 | 2017-05-31 | 中交一公局第二工程有限公司 | Recyclable tunnel double-lining reinforcing bar colligation positioner |
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| CN208619129U (en) * | 2018-08-30 | 2019-03-19 | 中铁一局集团有限公司 | A kind of tunnel-liner circumferential reinforcement positioning device |
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