CN113090288A - Corrugated steel shed tunnel structure and application thereof in existing tunnel lengthening construction - Google Patents
Corrugated steel shed tunnel structure and application thereof in existing tunnel lengthening construction Download PDFInfo
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- CN113090288A CN113090288A CN202110587776.8A CN202110587776A CN113090288A CN 113090288 A CN113090288 A CN 113090288A CN 202110587776 A CN202110587776 A CN 202110587776A CN 113090288 A CN113090288 A CN 113090288A
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- corrugated steel
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 130
- 239000010959 steel Substances 0.000 title claims abstract description 130
- 238000010276 construction Methods 0.000 title claims abstract description 21
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 17
- 239000000126 substance Substances 0.000 claims abstract description 16
- 239000011150 reinforced concrete Substances 0.000 claims abstract description 12
- 238000007789 sealing Methods 0.000 claims description 25
- 239000004567 concrete Substances 0.000 claims description 23
- 239000000463 material Substances 0.000 claims description 11
- 239000000945 filler Substances 0.000 claims description 10
- 230000000903 blocking effect Effects 0.000 claims description 5
- 239000004698 Polyethylene Substances 0.000 claims description 4
- -1 polyethylene Polymers 0.000 claims description 4
- 229920000573 polyethylene Polymers 0.000 claims description 4
- 239000011433 polymer cement mortar Substances 0.000 claims description 4
- 239000006261 foam material Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 2
- 101150097977 arch-1 gene Proteins 0.000 description 10
- 238000009415 formwork Methods 0.000 description 8
- 201000010099 disease Diseases 0.000 description 4
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 4
- 238000004873 anchoring Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000003566 sealing material Substances 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
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Classifications
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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
- E21D11/20—Special cross- sections, e.g. corrugated
-
- 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
- E21D11/24—Knuckle joints or links between arch members
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
The invention discloses a corrugated steel shed tunnel structure and application thereof in the lengthening construction of an existing tunnel, belonging to the technical field of tunnel construction structures, wherein the corrugated steel shed tunnel structure comprises a corrugated steel arch body arranged at the opening of the existing structure, and the corrugated steel arch body is connected with the opening of the existing structure through a chemical anchor bolt connecting structure; the outer wall of the corrugated steel arch body is provided with a plurality of reinforced concrete structure reinforcing members at intervals; the corrugated steel shed tunnel structure is used for lengthening the existing tunnel. The corrugated steel arch body is arranged at the opening of the existing structure through a chemical anchor bolt connecting structure, so that the lengthening of the existing structure is realized; meanwhile, a plurality of reinforced concrete structure reinforcing members are arranged on the outer wall of the corrugated steel arch body at intervals, so that the overall strength of the corrugated steel arch body is further improved. The invention can realize rapid construction, and traffic does not need to be sealed during construction, thereby reducing loss to the minimum; the construction cost is low, the integral strength is high, the earthquake resistance is high, and the method is particularly suitable for lengthening tunnels in mountainous areas and multi-earthquake areas.
Description
Technical Field
The invention belongs to the technical field of tunnel construction structures, and particularly relates to a corrugated steel shed tunnel structure and application thereof in existing tunnel lengthening construction.
Background
At present, a large number of concrete tunnels are built in China, and due to the limitation of the design level or the change of geological conditions at that time, the original tunnels need to be lengthened or open cut tunnels need to be built to prevent the earth stones on the two sides of the tunnel opening from falling. If the concrete tunnel is continuously built at the moment, firstly, the concrete tunnel is exposed outside, and diseases such as frost heaving cracking and the like are easy to occur. Secondly, the cost for building the concrete tunnel is very high, and the relative cost of the concrete tunnel with a shorter distance is higher. And thirdly, the building of the concrete tunnel can seal the traffic, thereby causing great loss on the railway. Therefore, a structure which is simple, convenient, high in strength, low in cost and capable of avoiding concrete diseases is urgently needed.
Disclosure of Invention
The invention aims to solve the technical problems that in the prior art, the cost is high, the number of diseases is large, and the influence of broken traffic construction is large when a concrete structure is built at the opening of an existing tunnel to be lengthened.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a corrugated steel shed tunnel structure comprises a corrugated steel arch body arranged at an opening of an existing structure, wherein the corrugated steel arch body is connected with the opening of the existing structure through a chemical anchor bolt connecting structure and is used for lengthening the existing structure; and a plurality of reinforced concrete structure reinforcing members are arranged on the outer wall of the corrugated steel arch body at intervals.
Preferably, the chemical anchor bolt connecting structure comprises a flange plate, an anchor bolt and a plugging material for sealing the end part of the corrugated steel arch body, wherein the flange plate is inverted T-shaped, the inner side of a bottom plate of the flange plate is abutted against the bottom of a trough at the tail end of the corrugated steel arch body, the inner side of a vertical plate of the flange plate is fixed with the art end of the corrugated steel arch body, and the bottom of the vertical plate is abutted against the outer wall of the existing structure; the tail end of the anchor bolt penetrates through the outer side of the bottom plate of the flange plate and is fixed in the existing structure, and a sealing gasket is arranged between the outer side of the bottom plate of the flange plate and the existing structure; the putty covers in the outside of crab-bolt, and fills in the contained angle department between the riser of flange board and existing structure.
Preferably, the blocking material is polymer cement mortar.
Preferably, the chemical anchor bolt connecting structure comprises a sealing ring, an anchor bolt and a filler for sealing, wherein the sealing ring is arranged between the corrugated steel arch body and the outer wall of the existing structure, and the tail end of the anchor bolt sequentially penetrates through the corrugated steel arch body and the sealing ring, extends into the existing structure and is used for connecting the corrugated steel arch body with the existing structure; the filler sets up in the outside of sealing washer and crab-bolt, just fills between corrugated steel arch body and existing structure.
Preferably, the filler is a polyethylene foam material.
Preferably, the reinforced concrete structure reinforcing member comprises a template buckled outside the corrugated steel arch body and a concrete structure inside the template, a shear member is embedded inside the concrete structure, and the lower end of the shear member is connected with the corrugated steel arch body; the edge of the template is connected with the corrugated steel arch body.
Preferably, the longitudinal section of the template is of a U-shaped structure with an opening facing the corrugated steel arch body, and the open ends on two sides of the template are connected with the corrugated steel arch body through connecting bolts.
Preferably, the top of the template is an arc corrugated steel plate, the two sides of the template are L-shaped steel plates, the upper end of the long side part of each L-shaped steel plate is welded and fixed with the corrugated steel plate, and the short side parts of the L-shaped steel plates face to the two sides and are connected with the corrugated steel arch body through connecting bolts; and reinforcing rib plates are arranged at the corners of the L-shaped steel plates.
Preferably, the shear pieces are quincunx shear pieces, and two rows of shear pieces are arranged in each template; the tail end of a center rod of the shear piece is connected with the corrugated steel arch body through a connecting bolt.
The invention also provides an application of the corrugated steel shed tunnel structure in the lengthening construction of the existing tunnel, the corrugated steel shed tunnel structure is installed at the hole opening of the existing tunnel, the existing structure is the existing tunnel, and the lengthening construction of the existing tunnel is completed by utilizing the corrugated steel shed tunnel structure.
Adopt the produced beneficial effect of above-mentioned technical scheme to lie in: compared with the prior art, the corrugated steel arch body is arranged at the opening of the existing tunnel through the chemical anchor bolt connecting structure, so that the lengthening of the existing tunnel is realized; meanwhile, a plurality of reinforced concrete structure reinforcing members are arranged on the outer wall of the corrugated steel arch body at intervals, so that the overall strength of the corrugated steel arch body is further improved. The invention can realize rapid construction, and traffic does not need to be sealed during construction, thereby reducing loss to the minimum; the construction cost is low, the integral strength is high, the earthquake resistance is high, and the method is particularly suitable for lengthening tunnels in mountainous areas and multi-earthquake areas. The invention has better universality and is convenient to popularize and apply.
Drawings
The invention is described in further detail in connection with the following drawings and detailed description.
FIG. 1 is a schematic structural diagram of a corrugated steel shed tunnel structure according to an embodiment of the present invention;
FIG. 2 is a schematic view of the connection of the corrugated steel arch ends to the existing structure of FIG. 1;
FIG. 3 is a schematic structural view of a reinforced structural member according to the present invention;
FIG. 4 is a schematic structural view of a chemical anchoring bolt connection according to an embodiment of the present invention;
FIG. 5 is a schematic structural view of a chemical anchoring bolt connection according to another embodiment of the present invention;
FIG. 6 is a schematic diagram of the structure of a template in one embodiment of the invention;
in the figure: 00-existing structure; 1-corrugated steel arch body, 2-chemical anchor bolt connecting structure, 3-flange plate, 4-anchor bolt, 5-blocking material, 6-sealing gasket, 7-sealing ring, 8-filling material, 9-reinforced concrete structure reinforcing member, 10-template, 11-concrete structure, 12-shearing force piece, 13-connecting bolt, 14-corrugated steel plate, 15-L-shaped steel plate and 16-reinforcing rib plate.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by one of ordinary skill in the art from the embodiments given herein without making any creative effort, shall fall within the scope of the present invention.
The corrugated steel shed tunnel structure shown in fig. 1 comprises a corrugated steel arch body 1 arranged at the opening of an existing structure 00, wherein the corrugated steel arch body 1 is connected with the opening of the existing structure 00 through a chemical anchor bolt connecting structure 2 and is used for lengthening the existing structure; and a plurality of steel-concrete structure reinforcing components 9 are arranged on the outer wall of the corrugated steel arch body 1 at intervals, so that the overall strength of the corrugated steel arch body can be improved. Wherein, the corrugated steel arch body adopts large-waveform corrugated steel, such as 380 × 140, 400 × 150 (wave distance × wave depth) waveform; and spraying a non-metallic coating or adopting galvanized corrugated steel outside the corrugated steel arch body. The existing structure in this embodiment is an existing tunnel.
In a specific embodiment of the present invention, as shown in fig. 1 and 4, the chemical anchor bolt connection structure 2 includes a flange plate 3, an anchor bolt 4 and a blocking material 5 for sealing an end of the corrugated steel arch 1, the flange plate 3 is in an inverted T shape, an inner side of a bottom plate of the flange plate 3 abuts against a bottom of a trough at a tail end of the corrugated steel arch 1, an inner side of a vertical plate of the flange plate 3 is fixed with the tail end of the corrugated steel arch 1, and a bottom of the vertical plate abuts against an outer wall of the existing structure 00; the tail end of the anchor bolt 4 penetrates through the outer side of the bottom plate of the flange plate 3 and is fixed in the existing structure 00, and a sealing gasket 6 is arranged between the outer side of the bottom plate of the flange plate 3 and the existing structure 00; the blocking material 5 covers the outer part of the anchor bolt 4 and is filled at the included angle between the vertical plate of the flange plate 3 and the existing structure 00. In addition, a reinforcing rib plate 16 is arranged between the back side of the vertical plate of the flange plate 3 and the tail end of the corrugated steel arch body 1, and the reinforcing rib plate is welded and fixed on the back side of the vertical plate of the corrugated steel arch body and the flange plate so as to improve the connection firmness of the flange plate and the corrugated steel arch body. Wherein the blocking material 5 is polymer cement mortar. By adopting the chemical anchor bolt connecting structure with the structure, the anchor bolt can be fixed on the outer wall of the existing structure, the sealing gasket between the flange pole and the wall of the existing structure is sealed by adopting rubber or other sealing materials, and polymer cement mortar is used as plugging material for plugging after the installation is finished.
In another embodiment of the present invention, as shown in fig. 5, the chemical anchor bolt connection structure 2 includes a sealing ring 7, an anchor bolt 4 and a filler 8 for sealing, wherein the sealing ring 7 is disposed between the corrugated steel arch 1 and the outer wall of the existing structure 00, and the end of the anchor bolt 4 sequentially penetrates through the corrugated steel arch 1 and the sealing ring 7 and extends into the existing structure 00 for connecting the corrugated steel arch 1 with the existing structure 00; the filler 8 is arranged outside the sealing ring 7 and the anchor bolt 4 and filled between the corrugated steel arch body 1 and the existing structure 00. Wherein, the filler 8 is polyethylene foam material. By adopting the structure, the corrugated steel arch body can be directly fixed on the existing structure wall by adopting the anchor bolt, the sealing ring between the corrugated steel arch body and the existing structure wall is sealed by adopting rubber or other sealing materials, and then the clearance between the corrugated steel arch body and the existing structural member is plugged by taking polyethylene foaming material as filler.
In one embodiment of the present invention, as shown in fig. 1 to 3, the reinforced concrete structure 9 includes a formwork 10 for being fastened to the outside of the corrugated steel arch 1 and a concrete structure 11 inside the formwork 10, a shear member 12 is embedded inside the concrete structure 11, and the lower end of the shear member 12 is connected to the corrugated steel arch 1; the edge of the formwork 10 is connected with the corrugated steel arch body 1. The steel-concrete structure reinforcing member is fixed on the corrugated steel arch body by using the shearing force piece so as to improve the strength of the corrugated steel arch body.
In one embodiment of the present invention, as shown in fig. 3 and 6, the longitudinal section of the formwork 10 is a U-shaped structure with an opening facing the corrugated steel arch 1, and the two open ends of the formwork 10 are connected with the corrugated steel arch 1 through connecting bolts 13. During specific manufacturing, as shown in fig. 6, the top of the formwork 10 is an arc-shaped corrugated steel plate 14, two sides of the formwork 10 are L-shaped steel plates 15, the upper ends of the long side portions of the L-shaped steel plates 15 are welded and fixed with the corrugated steel plate 14, and the short side portions of the L-shaped steel plates 15 face two sides and are connected with the corrugated steel arch body 1 through connecting bolts 13. In order to improve the overall strength of the formwork, reinforcing ribs 16 are arranged at the corners of the L-shaped steel plates 15. The radian of the L-shaped steel plate is consistent with that of the corrugated steel plate, and the template and the corrugated steel arch body are fixedly connected through high-strength bolts.
Meanwhile, the shear pieces 12 are quincunx shear pieces, and two rows of shear pieces 12 are arranged in each template 10; the tail end of the center rod of the shear member 12 is connected with the corrugated steel arch body 1 through a connecting bolt 13. After the shear piece and the template are fixedly connected with the corrugated steel arch body, grouting is performed inside the template, and a concrete structure is formed after solidification, so that the strength of the reinforced concrete structure reinforcing member is improved.
The invention also provides an application of the corrugated steel shed tunnel structure in the lengthening construction of the existing tunnel, the corrugated steel shed tunnel structure is installed at the hole opening of the existing tunnel, the existing structure is the existing tunnel, and the lengthening construction of the existing tunnel is completed by utilizing the corrugated steel shed tunnel structure. The tunnel lengthening structure containing the corrugated steel shed tunnel structure is within the scope of protection of the invention.
In summary, the invention has the following advantages:
1. the reinforced concrete structure reinforcing component at the top of the corrugated steel arch body adopts a reinforced concrete combined structure, and the overall strength is high.
2. Although the concrete is locally adopted in the reinforced member of the steel-concrete structure, because the corrugated steel plate is adopted to manufacture the template, the concrete is protected and expanded, the diseases such as cracking of the concrete and the like can not occur, and the template is used as a permanent template and does not need to be dismantled, so that the strength is increased.
3. The invention has the advantages of high construction speed and lower overall cost than a concrete upper structure.
4. The invention does not need to seal traffic during construction, and reduces loss to the minimum.
5. The whole corrugated steel arch body is of a galvanized structure, and can be sprayed with a non-metallic coating, so that the service life is long, and the corrugated steel arch body is not afraid of wind, rain and rain.
6. The invention has high anti-seismic performance, and is particularly suitable for mountainous areas and multi-seismic areas.
In the description above, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and thus the present invention is not limited to the specific embodiments disclosed above.
Claims (10)
1. The utility model provides a corrugated steel shed tunnel structure which characterized in that: the corrugated steel arch body is connected with the opening of the existing structure through a chemical anchor bolt connecting structure and is used for lengthening the existing structure; and a plurality of reinforced concrete structure reinforcing members are arranged on the outer wall of the corrugated steel arch body at intervals.
2. The corrugated steel shed tunnel structure according to claim 1, wherein: the chemical anchor bolt connecting structure comprises a flange plate, an anchor bolt and a plugging material for sealing the end part of the corrugated steel arch body, wherein the flange plate is inverted T-shaped, the inner side of a bottom plate of the flange plate is abutted against the bottom of a tail end wave trough of the corrugated steel arch body, the inner side of a vertical plate of the flange plate is fixed with the tail end of the corrugated steel arch body, and the bottom of the vertical plate is abutted against the outer wall of the existing structure; the tail end of the anchor bolt penetrates through the outer side of the bottom plate of the flange plate and is fixed in the existing structure. A sealing gasket is arranged between the outer side of the bottom plate of the flange plate and the existing structure; the putty covers in the outside of crab-bolt, and fills in the contained angle department between the riser of flange board and existing structure.
3. The corrugated steel shed tunnel structure according to claim 2, wherein: the blocking material is polymer cement mortar.
4. The corrugated steel shed tunnel structure according to claim 1, wherein: the chemical anchor bolt connecting structure comprises a sealing ring, an anchor bolt and a filler for sealing, wherein the sealing ring is arranged between the corrugated steel arch body and the outer wall of the existing structure, and the tail end of the anchor bolt sequentially penetrates through the corrugated steel arch body and the sealing ring, extends into the existing structure and is used for connecting the corrugated steel arch body and the existing structure; the filler sets up in the outside of sealing washer and crab-bolt, just fills between corrugated steel arch body and existing structure.
5. The corrugated steel shed tunnel structure according to claim 4, wherein: the filler is a polyethylene foam material.
6. The corrugated steel shed tunnel structure according to claim 1, wherein: the reinforced concrete structure reinforcing member comprises a template buckled outside the corrugated steel arch body and a concrete structure inside the template, a shear member is embedded inside the concrete structure, and the lower end of the shear member is connected with the corrugated steel arch body; the edge of the template is connected with the corrugated steel arch body.
7. The corrugated steel shed tunnel structure according to claim 6, wherein: the longitudinal section of the template is of a U-shaped structure with an opening facing the corrugated steel arch body, and the open ends of the two sides of the template are connected with the corrugated steel arch body through connecting bolts.
8. The corrugated steel shed tunnel structure according to claim 7, wherein: the top of the template is an arc corrugated steel plate, the two sides of the template are L-shaped steel plates, the upper end of the long side part of each L-shaped steel plate is fixedly welded with the corrugated steel plate, and the short side parts of the L-shaped steel plates face the two sides and are connected with the corrugated steel arch body through connecting bolts; and reinforcing rib plates are arranged at the corners of the L-shaped steel plates.
9. The corrugated steel shed tunnel structure according to claim 6, wherein: the shear pieces are quincunx shear pieces, and two rows of shear pieces are arranged in each template; the tail end of a center rod of the shear piece is connected with the corrugated steel arch body through a connecting bolt.
10. The utility model provides an application of corrugated steel shed tunnel structure in existing tunnel extension construction which characterized in that: installing the corrugated steel shed tunnel structure according to any one of claims 1 to 9 at the opening of an existing tunnel, wherein the existing structure is the existing tunnel, and the lengthening construction of the existing tunnel is completed by using the corrugated steel shed tunnel structure.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110385994 | 2021-04-12 | ||
| CN2021103859943 | 2021-04-12 |
Publications (1)
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| CN113090288A true CN113090288A (en) | 2021-07-09 |
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| CN202110587776.8A Pending CN113090288A (en) | 2021-04-12 | 2021-05-27 | Corrugated steel shed tunnel structure and application thereof in existing tunnel lengthening construction |
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Citations (6)
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|---|---|---|---|---|
| KR20120050747A (en) * | 2010-11-11 | 2012-05-21 | 평산에스아이 주식회사 | Precast tunnel structure using corrugated multi plate |
| CN207775743U (en) * | 2017-12-20 | 2018-08-28 | 衡水益通管业股份有限公司 | A kind of rectangle corrugated plating culvert for culvert linear |
| CN108915734A (en) * | 2018-06-18 | 2018-11-30 | 苏州大学 | A kind of corrugated steel-Combined concrete supporting construction and its construction method |
| CN210798990U (en) * | 2019-06-26 | 2020-06-19 | 衡水益通管业股份有限公司 | Corrugated steel lining combined member for tunnel |
| CN112031821A (en) * | 2020-08-04 | 2020-12-04 | 北京鸿锐嘉科技发展有限公司 | Reinforcing protection treatment method for tunnel lining defects |
| CN212774332U (en) * | 2020-07-14 | 2021-03-23 | 衡水益通管业股份有限公司 | Steel-concrete combined open cut tunnel |
-
2021
- 2021-05-27 CN CN202110587776.8A patent/CN113090288A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120050747A (en) * | 2010-11-11 | 2012-05-21 | 평산에스아이 주식회사 | Precast tunnel structure using corrugated multi plate |
| CN207775743U (en) * | 2017-12-20 | 2018-08-28 | 衡水益通管业股份有限公司 | A kind of rectangle corrugated plating culvert for culvert linear |
| CN108915734A (en) * | 2018-06-18 | 2018-11-30 | 苏州大学 | A kind of corrugated steel-Combined concrete supporting construction and its construction method |
| CN210798990U (en) * | 2019-06-26 | 2020-06-19 | 衡水益通管业股份有限公司 | Corrugated steel lining combined member for tunnel |
| CN212774332U (en) * | 2020-07-14 | 2021-03-23 | 衡水益通管业股份有限公司 | Steel-concrete combined open cut tunnel |
| CN112031821A (en) * | 2020-08-04 | 2020-12-04 | 北京鸿锐嘉科技发展有限公司 | Reinforcing protection treatment method for tunnel lining defects |
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| Title |
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| 上海申通地铁集团有限公司，上海建科工程咨询有限公司等: "《地铁盾构法隧道修复加固工程施工质量验收规范》", 30 June 2017 * |
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