LU102274B1 - Double arch tunnel supporting structure suitable for soft rock condition - Google Patents
Double arch tunnel supporting structure suitable for soft rock condition Download PDFInfo
- Publication number
- LU102274B1 LU102274B1 LU102274A LU102274A LU102274B1 LU 102274 B1 LU102274 B1 LU 102274B1 LU 102274 A LU102274 A LU 102274A LU 102274 A LU102274 A LU 102274A LU 102274 B1 LU102274 B1 LU 102274B1
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- Luxembourg
- Prior art keywords
- tunnel
- middle pilot
- section
- supporting structures
- pilot tunnel
- Prior art date
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- 239000011435 rock Substances 0.000 title claims abstract description 16
- 210000000988 bone and bone Anatomy 0.000 claims description 27
- 239000011150 reinforced concrete Substances 0.000 claims description 8
- 238000003466 welding Methods 0.000 claims description 5
- 238000009412 basement excavation Methods 0.000 abstract description 16
- 238000010276 construction Methods 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 4
- 239000002689 soil Substances 0.000 abstract description 3
- 239000004567 concrete Substances 0.000 description 4
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241000180579 Arca Species 0.000 description 1
- 241000206607 Porphyra umbilicalis Species 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/14—Layout of tunnels or galleries; Constructional features of tunnels or galleries, not otherwise provided for, e.g. portals, day-light attenuation at tunnel openings
-
- 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
- E21D11/003—Linings or provisions thereon, specially adapted for traffic tunnels, e.g. with built-in cleaning devices
-
- 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
- E21D11/006—Lining anchored in the rock
-
- 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
-
- 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
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F11/00—Rescue devices or other safety devices, e.g. safety chambers or escape ways
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Civil Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Business, Economics & Management (AREA)
- Health & Medical Sciences (AREA)
- Emergency Management (AREA)
- Pulmonology (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The present invention discloses a double arch tunnel supporting structure suitable for a soft rock condition, including a tunnel supporting structure, a middle pilot tunnel cross beam and a middle pilot tunnel cross brace. In the double arch tunnel excavation process, tunnel section supporting structures are sequentially arranged along a tunnel excavation direction, the adjacent two tunnel section supporting structures arc connected through a purline in a direction of the tunnel, the tunnel section supporting structures are connected through the middle pilot tunnel cross beam and the middle pilot tunnel cross brace on the same plane, and the excavation and support work of the tunnel is completed by excavating and supporting; a driving space and a middle pilot tunnel are formed, and the middle pilot tunnel is used to ensure people to avoid risks in time when an accident occurs in the funnel: a section shape of a supporting structure is similar to a shape alter a soil layer under a soft rock geology is excavated, a model may be designed and constructed along with a section shape, thereby reducing filling of a section notch after a building is completed: and under the condition of ensuring the supporting strength, the double arch tunnel supporting structure is simple in structure and convenient to construct, and a construction period is effectively shortened.
Description
BI-5174 1 . LU102274
TECHNICAL FIELD The present invention relates to a double arch tunnel supporting structure. and in particular. to a double arch tunnel supporting structure suitable for a soft rock condition.
BACKGROUND The tunnel 1s an engineering building buried in the stratum and is a form that human utilizes underground space. With the development of soctety, there are numerous buildings on the ground and the available arca is becoming less and less, In order to facilitate peoples life and relieve the road traffic pressure. tunnels have emerged. Compared with the traditional tunnel. the double arch tunnel has the following advantages: (1) traffic jam may be avoided and traffic pressure may be relieved: (2) large space 1s beneficial to ventilation and meets the daylighting requirement: (3) the double arch tunnel has higher anti-seismic property relative to the single arch tunnel: (4) high water discharging property is achieved. multi-directional and multi-angle water discharge is realized. and the quality of the tunnel is ensure: and (5) high safety performance is achieved. However. there are still many problems in the construction of the double arch tunnel. Under the ecological conditions of soft rock, the excavation sections formed after stratum excavation are mostly irregular in shape. specifically. a variety of polygonal excavation sections. Therefore, for the traditional circular tunnel. the preliminary support of the tunnel. the construction of the tunnel and the gap backfilling of the tunnel accordingly face construction problems. Further. the partition walls in the ordinary traditional double-connected tunnels arc all made of solid concrete, so on one hand. space and materials are wasted; and on the other hand. since the internal part of the tunnel is the driving space and lacks of a safe escape exit. it is difficult to evacuate the crowd in case of emergency. Therefore. how to provide a double arch tunnel supporting structure which can overcome the original defects under the condition of maintaining the original advantages is the research direction of this industry,
SUMMARY For the above problems in the prior art. the present invention provides a double arch tunnel supporting structure suitable for a soft rock condition. The tunnel structure is multi-section
B1.-5174 2 arch-shaped and is consistent with a tunnel section formed by soft rock excavation and VA 02274 supporting strength can be effectively ensured; in addition the tunnel structure is simple and convenient to construct. thereby effectively shortening construction period and reducing the use of building materials. In addition. an escape space is provided and can ensure people to avoid risks in time when an accident occurs in the tunnel.
To achieve the above objective. the present invention adopts the technical solution: a double arch tunnel supporting structure suitable for a soft rock condition includes two tunnel supporting structures. a plurality of middle pilot tunnel cross beams and a plurality of middle pilot tunnel cross braces, a driving space being formed in each of the tunnel supporting structures: cach of the tunnel supporting structures consists of a plurality of tunnel section supporting structures and a plurality of purlines. the plurality of tunnel section supporting structures are parallel to cach other along a direction of the tunnel and are arranged equidistantly. and the adjacent two tunnel section supporting structures are fixedly connected through the plurality of purlines: cach of the tunnel section supporting structures includes an arch frame, two bone columns and a cross brace. the two bone columns are respectively arranged on two sides of the arch-shaped tunnel and lower ends of the two bone columns are vertically fixed to a bottom plate of the arch-shaped tunnel. the cross brace is horizontally placed on the bottom plate of the arch-shaped tunnel. two ends of the cross brace are respectively fixedly connected to the lower ends of two bone columns. the arch frame consists of a top beam. two rafters. two web members and a cross beam. the top beam is fixed at the top of the arch-shaped tunnel. the two rafters are symmetrically arranged on two sides of the top beam and upper ends of the two rafters are respectively fixedly connected to two ends of the top beam. lower ends of the two rafters are respectively fixedly connected to upper ends of the two bone columns. upper ends of the two web members are fixedly connected to a center point of the top beam, lower ends of the two web members are respectively fixedly connected to side parts of the two rafters. and the cross beam and the top beam are arranged in parallel and two ends of the cross beam arc respectively fixedly connected to the lower ends of the web members. so that the two web members and the cross beam form an isosceles triangle structure and an include angle between the two web members is 120°: and the
BL-3174 3 two tunnel section supporting structures most proximal to two ports of the tunnel may not b92274 provided with the cross beam, so the tunnel section supporting structures at the two ports of the tunnel still can ensure the supporting strength under the condition of omitting the cross beam, the cross brace and the middle pilot tunnel cross brace by utilizing the edge effect of the whole rock stratum.
Two tunnel section supporting structures located on the same section are connected through the middle pilot tunne! cross beam and the middle pilot tunnel cross brace. two ends of the middle pilot tunnel cross beam are respectively fixedly connected to the lower ends of the rafters of the two tunnel section supporting structures. two ends of the middle pilot tunnel cross brace are respectively fixedly connected to the lower ends of the bone columns of the two tunnel section supporting structure, and the middle pilot tunnel cross brace and the cross braces of the two tunnel section supporting structures arc located on the same straight line. so that the middle pilot tunnel cross beam, the middle pilot tunnel cross brace and the bone columns of the two tunnel section supporting structures form a middle pilot tunnel and the middle pilot tunnel is parallel to the direction of the tunnel.
Further. à width of the middle pilot tunnel is less than or equal to 1/5 of a width of a driving space: and a height of the middle pilot tunnel is less than a height of a driving space.
Further. the fixed connection is welding.
Further. the rafier. the web member. the top beam. the cross beam. the bone column. the cross brace. the middle pilot tunnel cross beam. the middle pilot tunnel cross brace and the purline arc reinforced concrete components.
Further. a strength grade of each reinforced concrete component is not less than C25.
Compared with the prior art. the section of the multi-scetion tunnel of the present invention is more similar to the section of the circular double arch tunnel and the section after soft rock excavation. thereby facilitating preliminary support in the construction and facilitating construction and gap backfilling. Through combination of two tunnel supporting assemblies. a plurality of middle pilot tunnel cross beams and a plurality of middle pilot tunnel cross braces. the tunnel supporting structure consists of a plurality of tunnel section supporting structures and a
B1-5174 4 plurality of purlines; in the excavation process of the double arch tunnel. the tunnel section 02274 supporting structures are arranged sequentially in an excavation direction of the tunnel. the adjacent two tunnel section supporting structures in a direction of the tunnel are connected through the purlines, the two tunnel section supporting structures on the same plane are connected through the middle pilot tunnel cross beam and the middle pilot tunnel cross brace. and the excavation and supporting work of the whole double arch tunnel is completed by excavating and supporting. so that two driving spaces and onc middle pilot tunnel are formed. and the middle tunnel is conligured to ensure people to avoid risks in time when an accident occurs in the tunnel: during connection and supporting of cach part of the tunnel supporting structure. the plurality of middle pilot tunnel cross beams and the plurality of middle pilot tunnel cross braces. welding is conducted through preset reinforcing steel bars and then concrete pouring 1s conducted. so that cach part is the reinforced concrete component and the required supporting strength is effectively ensured: therefore. the present invention is simple in structure and convenient to construct. and can realize construction of the driving spaces and the middle pilot tunnel of the double arch tunnel at the same time. thereby clfectively reducing the construction period: in addition. an escape space is provided and can ensure people to avoid risks in time when an accident occurs in the tunnel.
BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a structural schematic diagram of a tunnel section supporting structure according to the present invention: FIG. 2 is a structural schematic diagram of a tunnel section supporting structure without a cross beam. a cross brace and a middle pilot tunnel cross brace in FIG. 1: and FIG. 3 is a left view of FIG 1.
In the drawings: 1. top beam. 2. rafter. 3. web member. 4. cross beam. 5. bone column. 6. cross brace. 7. middle pilot tunnel cross brace. 8. middle pilot tunnel cross beam. 9. middle pilot tunnel. 10. driving space, 11. purline.
DETAILEP DESCRIPTION OF EMBODIMENTS The present invention will be further described hereafter.
B1-5174 5 As shown in FIG. 1 and FIG. 3, the present invention includes two tunnel supporting 02274 structures, a plurality of middle pilot tunnel cross beams 8 and a plurality of middle pilot tunnel cross braces 7. wherein a driving space 10 is formed in each of the tunnel supporting structures: a section of the tunnel supporting structure is similar to a polvgon and a shape after excavation of a soil laver under a soft rock geology. so that a worker may perform design construction on a model along with the shape of the section and filling of a section notch after the building is completed is reduced: and The tunnel plane includes two multi-section arch-shaped tunnels. and the section of the tunnel is created according to the section formed after rock stratum excavation under the soft rock geological condition and is similar to the section of the built arch-shaped tunnel. thereby facilitating construction.
Fach of the tunnel supporting structures consists of a plurality of tunnel section supporting structures and a plurality of purlines 11, the plurality of tunnel section supporting structures are parallel to cach other along a direction of the tunnel and arc arranged equidistantly. and the adjacent two tunnel section supporting structures are fixedly connected through the plurality of purlines 11; cach of the tunnel section supporting structures includes an arch frame, two bone columns 5 and a cross brace 6. the two bone columns 5 are respectively arranged on two sides of the arch-shaped tunnel and lower ends of the two bone columns 5 are vertically fixed to a bottom plate of the arch-shaped tunnel, the cross brace 6 is horizontally placed on the bottom plate of the arch-shaped tunnel. two ends of the cross brace 6 arc respectively fixedly connected 10 the lower ends of two bone columns 5. the arch frame consists of a top beam 1. two rafiers 2. two web members 3 and a cross beam 4. the top beam 1 is fixed at the top of the arch-shaped tunnel. the two rafters 2 are symmetrically arranged on two sides of the top beam 1 and upper ends of the two rafters 2 are respectively l'ixediv connected to two ends of the top beam 1. lower ends of the two rafters 2 arc respectively fixedly connected to upper ends of the two bone columns 5. upper ends of the two web members 3 are fixedly connected to a center point of the top beam 1. lower ends of the two web members 3 are respectively fixedly connected to side parts of the two rafters 2. and the cross beam 4 and the top beam | arc arranged in parallel and two ends of the cross beam 4
BL-5174 6 are respectively fixedly connected to the lower ends of the web members 3. so that the two web 02274 members 3 and the cross beam 4 form an isosceles triangle structure and an include angle between the two web members 3 is 120°: and the two tunnel section supporting structures most proximal to two ports of the tunnel may not be provided with the cross beam 4. the cross brace 6 and the middle pilot tunnel cross brace 7. so the tunnel section supporting structures at the two ports of the tunnel still can ensure the supporting strength under the condition of omitting the cross beam
4. the cross brace 6 and the middle pilot tunnel cross brace 7 by utilizing the edge effect of the whole rock stratum.
Two tunnel section supporting structures located on the same section are connected through the middle pilot tunnel cross beam 8 and the middle pilot tunnel cross brace 7. two ends of the middle pilot tunnel cross beam 8 are respectively fixedly connected to the lower ends of the rafters 2 of the two tunnel section supporting structures. two ends of the middle pilot tunnel cross brace 7 are respectively fixedly connected to the lower ends of the bone columns 5 of the two tunnel section supporting structure. and the middle pilot tunnel cross brace 7 and the cross braces 6 of the two tunnel section supporting structures are located on the same straight line. so that the middle pilot tunnel cross beam 8. the middle pilot tunnel cross brace 7 and the bone columns 5 of the two tunnel section supporting structures form a middle pilot tunnel 9 and the middle pilot tunnel 9 is parallel to the direction of the tunnel. Since the tunnel is located in rock-soil. there is not only longitudinal load. but also horizontal load. The cross brace 6 and the middle pilot tunnel cross brace 7 not only bears the longitudinal load. but also bears horizontal load. and the cross brace 6 plays a role in protecting the bone column 5 in the process of applying the load. thereby preventing the bone column 5 from being in failure under the action of the horizontal load.
Further. a width of the middle pilot tunnel 9 is less than or equal to 1/5 of a width of the driving space 10: and a height of the middle pilot tunnel 9 is less than a height of the driving space 10.
Further. the fixed connection is welding.
Further. the rafter 2. the web member 3. the top beam 1. the cross beam 4. the bone column 5, the cross brace 6. the middle pilot tunnel cross beam 8. the middle pilot tunnel cross brace 7 and the purline 11 are reinforced concrete components.
131-5174 7
Further. a strength grade of each reinforced concrete component is not less than C25, LuT02274
In the excavation process of the double arch tunnel. the tunnel section supporting structures are arranged sequentially in an excavation direction of the tunnel. the adjacent two tunnel section supporting structures in a direction of the tunnel are connected through the purlines 11. the two tunnel] section supporting structures on the same plane are connected through the middle pilot tunnel cross beam 8 and the middle pilot tunnel cross brace 7. and the excavation and supporting work of the whole double arch tunnel is completed by excavating and supporting: during connection and supporting of each part of the tunnel supporting structure. the plurality of middle pilot tunnel cross beams 8 and the plurality of middle pilot tunnel cross braces 7, welding is conducted through preset reinforcing steel bars and then concrete pouring is conducted. so that each part is the reinforced concrete component and the required supporting strength is effectively ensured: after the whole supporting work 1s completed. the two tunnel supporting structures, the plurality of middle pilot tunnel cross beams 8 and the plurality of middle pilot tunnel cross braces 7 form a whole body through concrete pouring. so that two driving spaces 10 and one middle pilot tunnel 9 are formed, and the middle pilot tunnel 9 is configured to ensure people to avoid risks in time when an accident occurs in the tunnel: the whole supporting arrangement of the whole double arch tunnel is finally completed.
Claims (5)
1. A double arch tunnel supporting structure suitable for a soft rock condition. comprising two tunnel supporting structures. a plurality of middle pilot tunnel cross beams (8) and a plurality of middle pilot tunnel cross braces (7), a driving space (10) being formed in cach of the tunnel supporting structures: cach of the tunnel supporting structures consists of a plurality of tunnel section supporting structures and a plurality of purlines (11). the plurality of tunnel section supporting structures are parallel to each other along a direction of the tunnel and are arranged equidistantly. and the adjacent two tunnel section supporting structures are fixedly connected through the plurality of purlines (11): cach of the tunnel section supporting structures comprises an arch frame. two bone columns (5) and a cross brace (6), the two bone columns (5) are respectively arranged on two sides of the arch-shaped tunnel and lower ends of the two bone columns (5) are vertically fixed to a bottom plate of the arch-shaped tunnel. the cross brace (6) 1s horizontally placed on the bottom plate of the arch-shaped tunnel. two ends of the cross brace (6) are respectively fixedly connected to the lower ends of two bone columns (5). the arch frame consists of a top beam (1). two rafters (3). two web members (3) and a cross beam (4). the top beam (1) is fixed at the top of the arch-shaped tunnel. the two rafters (2) are symmetrically arranged on two sides of the top beam (1) and upper ends of the two rafters (2) are respectively fixedly connected to two ends of the top beam (1). lower ends of the two rafters (2) are respectively fixedly connected to upper ends of the two bone columns (3). upper ends of the two web members (3) are [ixedly connected to a center point of the top beam (1). lower ends of the two web members (3) are respectively fixedly connected to side parts of the two rafters (2). and the cross beam (4) and the top beam (1) are arranged in parallel and two ends of the cross beam (4) are respectively fixedly connected to the lower ends of the web members (33. so that the two web members (3) and the cross beam (4) form an isosceles triangle structure and an include angle between the two web members (3) is 120°: and two tunnel section supporting structures located on the same section are connected through the middle pilot tunnel cross beam (8) and the middle pilot tunnel cross brace (7). two ends of the middle pilot tunnel cross beam (8) are respectively fixedly connected to the lower ends of the
131-5174 9 a 3) of the tw A . tlt ra . - . LUA 02274 rafters (2) of the two tunnel section supporting structures. two ends of the middle pilot tunnel cross brace (7) are respectively fixedly connected to the lower ends of the bone columns (5) of the two tunnel section supporting structure, and the middle pilot tunnel cross brace (7) and the cross braces (6) of the two tunnel section supporting structures are located on the same straight line. so that the middle pilot tunnel cross beam (8). the middle pilot tunnel cross brace (7) and the bone columns (3) of the two tunnel section supporting structures form a middle pilot tunnel (9) and the middle pilot tunnel (9) is parallel to the direction of the tunnel.
2. The multi-section connected double arch tunnel supporting structure according 10 claim |. wherein a width of the middle pilot tunnel (9) is less than or equal to 1/5 of a width of a driving space (10): and a height of the middle pilot tunnel (9) is less than a height of a driving space (10).
3. The multi-section connected double arch tunnel supporting structure according to claim 1. wherein the fixed connection 1s welding.
4. The multi-section connected double arch tunnel supporting structure according to claim 1. wherein the rafter (2). the web member (3), the top beam (1). the cross beam (4). the bone column (3). the cross brace (6). the middle pilot tunnel cross beam (8). the middle pilot tunnel cross brace (7) and the purline (11} are reinforced concrete components.
5. The multi-section connected double arch tunnel supporting structure according to claim 4. wherein a strength grade of cach reinforced concrete component is not less than C25.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010017762.8A CN111101967A (en) | 2020-01-08 | 2020-01-08 | Duplex arched tunnel supporting structure suitable for soft rock condition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| LU102274B1 true LU102274B1 (en) | 2021-06-07 |
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ID=70426680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| LU102274A LU102274B1 (en) | 2020-01-08 | 2020-12-07 | Double arch tunnel supporting structure suitable for soft rock condition |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN111101967A (en) |
| LU (1) | LU102274B1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113738394A (en) * | 2021-09-11 | 2021-12-03 | 中建铁路投资建设集团有限公司 | Excavation supporting and reinforcing structure and excavation supporting and reinforcing device |
-
2020
- 2020-01-08 CN CN202010017762.8A patent/CN111101967A/en active Pending
- 2020-12-07 LU LU102274A patent/LU102274B1/en active IP Right Grant
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113738394A (en) * | 2021-09-11 | 2021-12-03 | 中建铁路投资建设集团有限公司 | Excavation supporting and reinforcing structure and excavation supporting and reinforcing device |
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| Publication number | Publication date |
|---|---|
| CN111101967A (en) | 2020-05-05 |
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Effective date: 20210607 |