CN220849695U - Open cut tunnel lining expansion joint protection structure and open cut tunnel - Google Patents

Open cut tunnel lining expansion joint protection structure and open cut tunnel Download PDF

Info

Publication number
CN220849695U
CN220849695U CN202322406698.4U CN202322406698U CN220849695U CN 220849695 U CN220849695 U CN 220849695U CN 202322406698 U CN202322406698 U CN 202322406698U CN 220849695 U CN220849695 U CN 220849695U
Authority
CN
China
Prior art keywords
open cut
cut tunnel
expansion joint
corrugated steel
steel plate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202322406698.4U
Other languages
Chinese (zh)
Inventor
孟令闻
王志宏
孙胜玮
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hengshui Yitong Pipe Industry Co Ltd
Original Assignee
Hengshui Yitong Pipe Industry Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hengshui Yitong Pipe Industry Co Ltd filed Critical Hengshui Yitong Pipe Industry Co Ltd
Priority to CN202322406698.4U priority Critical patent/CN220849695U/en
Application granted granted Critical
Publication of CN220849695U publication Critical patent/CN220849695U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/20Hydro energy

Landscapes

  • Lining And Supports For Tunnels (AREA)

Abstract

The utility model provides a open cut tunnel lining expansion joint protection structure and an open cut tunnel, which belong to the technical field of corrugated steel, and comprise two fixing seats, corrugated steel plates and fillers, wherein the fixing seats are fixedly arranged on two sides of a lining expansion joint, and the corrugated steel plates are arranged in an arc shape and are circumferentially arranged along the open cut tunnel; the corrugated steel plate is fixedly arranged between the two fixing seats, is positioned above the lining expansion joint, is provided with an accommodating gap with the outer side face of the open cut tunnel, and is provided with a communication hole; two ends of the corrugated steel plate are fixedly connected with the foundation structures at two sides of the open cut tunnel; the filler is filled in the accommodating gap and is used for forming an anti-seepage layer for sealing the expansion joint between the corrugated steel plate and the two fixing seats. According to the open cut tunnel lining expansion joint protection structure provided by the utility model, the filler is fully distributed in the whole containing gap, a closed impermeable layer is arranged around the expansion joint, external rainwater, sand dust and the like can not enter the expansion joint any more, and the use of facilities in the open cut tunnel and the running of vehicles can not be influenced.

Description

Open cut tunnel lining expansion joint protection structure and open cut tunnel
Technical Field
The utility model belongs to the technical field of corrugated steel, and particularly relates to an open cut tunnel lining expansion joint protection structure and an open cut tunnel.
Background
The open cut tunnel lining is mainly applied to the exit part of a tunnel to prevent falling rocks, wind sand and water from entering, and the open cut tunnel lining is directly used as a protection structure of a railway line and a highway line. In areas with large temperature changes, expansion joints are required to be arranged in open cut tunnel lining. Because the expansion joint part of the open cut tunnel lining is broken, after a long time, the expansion joint part has the phenomena of dislocation, cracking and the like, so that the expansion joint part is seriously leaked, blown sand is poured in, and facilities and vehicles in the open cut tunnel can be influenced.
Disclosure of utility model
The utility model aims to provide an open cut tunnel lining expansion joint protection structure and an open cut tunnel, which are used for solving the technical problem that the expansion joint of the open cut tunnel lining in the prior art is easy to leak water and sand.
In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a open cut tunnel lining expansion joint protection architecture, include:
The number of the permanent seats is two, and the permanent seats are respectively arranged at two sides of the lining expansion joint and are fixedly connected with the open cut tunnel;
The corrugated steel plates are arranged in an arc shape and are circumferentially arranged along the open cut tunnel; the corrugated steel plate is arranged between the two fixing seats, and two sides of the corrugated steel plate are fixedly connected with the two fixing seats respectively; the corrugated steel plate is positioned above the lining expansion joint, an accommodating gap is formed between the corrugated steel plate and the outer side face of the open cut tunnel, and a communication hole communicated with the accommodating gap is formed in the corrugated steel plate; two ends of the corrugated steel plate are fixedly connected with the foundation structures at two sides of the open cut tunnel;
And the filler is filled in the accommodating gap from the communication hole and is used for forming an anti-seepage layer for sealing the expansion joint between the corrugated steel plate and the two fixing seats.
In a possible implementation manner, the fixing seat comprises an auxiliary mounting plate and a vertical mounting plate fixedly mounted on one side of the upper end of the auxiliary mounting plate, the auxiliary mounting plate is fixedly connected with the outer side of the open cut tunnel, both sides of the corrugated steel plate are respectively provided with a side flange corresponding to the vertical mounting plate, the vertical mounting plate is provided with a connecting hole, and the vertical mounting plate and the side flange are locked and fixed through bolts and nuts.
In one possible implementation, the lower end face of the auxiliary mounting plate is provided with a gasket.
In one possible implementation manner, the fixing base is an arc-shaped structure corresponding to the corrugated steel plate.
In one possible implementation manner, two ends of the corrugated steel plate are provided with end face flanges, and the end face flanges are provided with connecting holes; foundation bolts are prefabricated on the foundation structure, and the end face flange is connected with the foundation structure through the foundation bolts and is locked and fixed through nuts.
In one possible implementation, the anchor bolt is further provided with an elastic member, and the nut is pressed onto the elastic member from top to bottom.
In one possible implementation, the connection hole includes a plurality of elongated holes arranged along an axial direction of the deck plate, and a length direction of the elongated holes coincides with the axial direction of the deck plate.
In one possible embodiment, the corrugated steel plate is coated on its outer side with a protective layer.
In one possible implementation, the filler is a polyethylene foam material.
The open cut tunnel lining expansion joint protection structure provided by the utility model has the beneficial effects that: compared with the prior art, the open cut tunnel lining expansion joint protection structure comprises the steps that firstly, two fixing seats are fixedly arranged on two sides of an expansion joint, an installation distance is reserved between the two fixing seats and the expansion joint, a plurality of corrugated steel plates are spliced and fixed to form an arc-shaped structure, and the inner diameter of the arc-shaped structure is larger than the outer diameter of the open cut tunnel; the corrugated steel plate is arranged above the open cut tunnel from top to bottom and is positioned between the two fixing seats, the inner wall of the corrugated steel plate and the outer side face of the open cut tunnel are provided with accommodating gaps, two ends of the corrugated steel plate are fixedly connected with two sides of the open cut tunnel, the two sides of the corrugated steel plate are fixedly connected to the fixing seats, and expansion joints are surrounded by the corrugated steel plate and the two fixing seats; then, filler is added into the accommodating gap through the communicating holes on the corrugated steel plate, and the filler is fully distributed in the whole accommodating gap, so that a closed anti-seepage layer is arranged around the expansion joint, external rainwater, sand dust and the like can not enter the expansion joint any more, and the use of facilities in the open cut tunnel and the running of vehicles can not be influenced.
Another object of the utility model is to provide an open cut tunnel, which comprises any one of the open cut tunnel lining expansion joint protection structures.
According to the open cut tunnel provided by the utility model, as the open cut tunnel lining expansion joint protection structure is adopted, the filler is fully distributed in the whole accommodating gap, a closed impermeable layer is arranged around the expansion joint, external rainwater, sand dust and the like can not enter the expansion joint any more, the use of facilities in the open cut tunnel and the running of vehicles can not be influenced, and the open cut tunnel can be safely and reliably used.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of an installation structure of an open cut tunnel lining expansion joint protection structure provided by an embodiment of the utility model;
FIG. 2 is a second schematic diagram of an installation structure of an open cut tunnel lining expansion joint protection structure provided by an embodiment of the utility model;
FIG. 3 is a schematic diagram of connection between an end of a corrugated steel plate and an open cut tunnel according to an embodiment of the present utility model;
Fig. 4 is a schematic structural view of a corrugated steel sheet according to an embodiment of the present utility model.
Wherein, each reference sign in the figure:
1. A fixing seat; 11. an auxiliary mounting plate; 12. a vertical mounting plate; 13. a sealing gasket; 14. a bolt; 15. a nut; 2. corrugated steel plate; 21. an accommodation gap; 22. a side flange; 23. an end face flange; 24. a connection hole; 25. a slit hole; 3. a filler; 4. a base structure; 41. an anchor bolt; 42. an elastic member; 5. open cut tunnel; 51. expansion joints.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are merely for convenience in describing and simplifying the description based on the orientation or positional relationship shown in the drawings, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the utility model.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
Referring to fig. 1 to 3, a description will now be given of a protection structure for an open cut tunnel 5 lining expansion joint 51 provided by the present utility model. The patent tunnel 5 lining expansion joint 51 protection structure comprises two fixing seats 1, corrugated steel plates 2 and fillers 3, wherein the two fixing seats 1 are respectively arranged on two sides of the lining expansion joint 51 and are fixedly connected with the patent tunnel 5; the corrugated steel plates 2 are arranged in an arc shape and are circumferentially arranged along the open cut tunnel 5; the corrugated steel plate 2 is arranged between the two fixing seats 1, and two sides of the corrugated steel plate are fixedly connected with the two fixing seats 1 respectively; the corrugated steel plate 2 is positioned above the lining expansion joint 51, an accommodating gap 21 is arranged between the corrugated steel plate 2 and the outer side surface of the open cut tunnel 5, and a communication hole communicated with the accommodating gap 21 is formed in the corrugated steel plate 2; two ends of the corrugated steel plate 2 are fixedly connected with the foundation structures 4 at two sides of the open cut tunnel 5; the filler 3 fills the accommodating gap 21 from the communicating hole and is used for forming an anti-seepage layer for sealing the expansion joint 51 between the corrugated steel plate 2 and the two fixing seats 1.
Compared with the prior art, the protection structure for the open cut tunnel 5 lining expansion joint 51 has the advantages that firstly, two fixing seats 1 are fixedly arranged on two sides of the expansion joint 51 and have an installation distance from the expansion joint 51, a plurality of corrugated steel plates 2 are spliced and fixed to form an arc-shaped structure, and the inner diameter of the arc-shaped structure is larger than the outer diameter of the open cut tunnel 5; the corrugated steel plate 2 is arranged above the open cut tunnel 5 from top to bottom and is positioned between the two fixing seats 1, an accommodating gap 21 is formed between the inner wall of the corrugated steel plate 2 and the outer side surface of the open cut tunnel 5, two ends of the corrugated steel plate 2 are fixedly connected with two sides of the open cut tunnel 5, the two sides are fixedly connected to the fixing seats 1, and an expansion joint 51 is surrounded by the corrugated steel plate 2 and the two fixing seats 1; then, the filler 3 is added into the accommodating gap 21 through the communicating holes on the corrugated steel plate 2, and the filler 3 is fully distributed in the whole accommodating gap 21, so that a closed impermeable layer is arranged around the expansion joint 51, external rainwater, sand dust and the like can not enter the expansion joint 51 again, and the use of facilities in the open cut tunnel 5 and the running of vehicles can not be influenced.
Referring to fig. 1 and 2, as a specific embodiment of a protection structure for an open cut tunnel 5 lining expansion joint 51 provided by the utility model, a fixing base 1 comprises an auxiliary mounting plate 11 and a vertical mounting plate 12 fixedly mounted on one side of the upper end of the auxiliary mounting plate 11, wherein the auxiliary mounting plate 11 is fixedly connected with the outer side of the open cut tunnel 5, two sides of a corrugated steel plate 2 are respectively provided with a side flange 22 corresponding to the vertical mounting plate 12, a connecting hole 24 is formed in the vertical mounting plate 12, and the vertical mounting plate 12 and the side flange 22 are connected through a bolt 14 and locked and fixed through a nut 15; the vertical section of the fixed seat 1 is of an L-shaped structure, the auxiliary mounting plate 11 is fixedly mounted on the outer side surface of the open cut tunnel 5, and the vertical mounting plate 12 is perpendicular to the auxiliary mounting plate 11 and extends upwards; the corrugated steel plate 2 is installed between the two vertical installation plates 12, a side flange 22 which is in butt joint with the vertical installation plates 12 is arranged on the side surface, bolts 14 penetrate through the vertical installation plates 12 and the side flange 22 and are locked and fixed by nuts 15 when the side flange 22 is installed with the vertical installation plates 12, so that the corrugated steel plate 2 is firmly installed, and an accommodating gap 21 is formed between the corrugated steel plate 2 and the outer side surface of the open cut tunnel 5 by means of the vertical installation plates 12. The lower end face of the auxiliary mounting plate 11 is provided with a matched mounting surface matched with the outer side face of the open cut tunnel 5, so that the auxiliary mounting plate is fastened on the open cut tunnel 5 through foundation bolts 41 and the like.
Referring to fig. 1 and fig. 2, as a specific embodiment of the protection structure of the open cut tunnel 5 lining expansion joint 51 provided by the utility model, the lower end surface of the auxiliary mounting plate 11 is provided with a sealing gasket 13; the sealing gasket 13 is arranged between the auxiliary mounting plate 11 and the outer side surface of the open cut tunnel 5, so that the sealing performance and the firmness of the connection between the auxiliary mounting plate 11 and the open cut tunnel 5 are improved, and rainwater, dust and the like cannot enter the accommodating gap 21.
Referring to fig. 1 and fig. 2, as a specific embodiment of the protection structure for the open cut tunnel 5 lining expansion joint 51 provided by the present utility model, the fixing base 1 has an arc structure corresponding to the corrugated steel plate 2, so that the installation length of the fixing base 1 and the corrugated steel plate 2 is increased, and the fixing base 1 with more and more firm installation points of the whole corrugated steel plate 2 has an arc structure or an arch structure.
Referring to fig. 1, 3 and 4, as a specific embodiment of the protection structure of the open cut tunnel 5 lining expansion joint 51 provided by the utility model, two ends of the corrugated steel plate 2 are provided with end flanges 23, and the end flanges 23 are provided with connecting holes 24; foundation bolts 41 are prefabricated on the foundation structure 4, and the end face flange 23 is connected with the foundation structure 4 through the foundation bolts 41 and locked and fixed through nuts 15; after the corrugated steel plate 2 is installed above the open cut tunnel 5, two ends of the corrugated steel plate span two sides of the open cut tunnel 5, so that end face flanges 23 are installed at two ends of the corrugated steel plate 2, and the corrugated steel plate is fixedly installed at two sides of the open cut tunnel 5 through the end face flanges 23; specifically, the connection holes 24 on the end flange 23 are fitted with anchor bolts 41 pre-installed on the foundation structure 4, and locked and fixed using nuts 15.
Referring to fig. 1 and fig. 3, as a specific embodiment of the protection structure for the open cut tunnel 5 lining expansion joint 51 provided by the present utility model, the anchor bolt 41 is further provided with an elastic member 42, and the nut 15 is pressed onto the elastic member 42 from top to bottom; the foundation bolts 41 are additionally provided with springs to allow deformation of the open cut tunnel 5 lining the expansion joints 51 to adapt to environmental changes.
Referring to fig. 1 and 4, as a specific embodiment of the protection structure for the open cut tunnel 5 lining expansion joint 51 provided by the present utility model, the connection hole 24 includes a plurality of elongated holes 25 arranged along the axial direction of the corrugated steel plate 2, the length direction of the elongated holes 25 is consistent with the axial direction of the corrugated steel plate 2, and the elongated holes 25 are also arranged so that displacement can occur by means of the elongated holes 25 when the open cut tunnel 5 lining expansion joint 51 is deformed.
Referring to fig. 1 and 2, as a specific embodiment of the protection structure of the open cut tunnel 5 lining expansion joint 51 provided by the utility model, the outer side surface of the corrugated steel plate 2 is sprayed with a protection layer, so that the wear resistance, corrosion resistance and the like of the corrugated steel plate 2 are improved, the service life of the corrugated steel plate 2 is prolonged, and the corrugated steel plate is more suitable for areas with more wind, sand, rain and snow.
Referring to fig. 1 and 2, as a specific implementation manner of the protection structure of the open cut tunnel 5 lining expansion joint 51 provided by the utility model, the filler 3 is made of polyethylene foam material, so that the formed anti-seepage layer has various advantages of water and moisture resistance, shock resistance, sound insulation and the like.
Not shown in the figure, the embodiment of the utility model also provides an open cut tunnel 5, wherein the open cut tunnel 5 comprises any one of the protection structures of the expansion joints 51 lined by the open cut tunnel 5.
According to the open cut tunnel 5 provided by the utility model, the protection structure of the expansion joint 51 is lined by the open cut tunnel 5, the filler 3 is fully distributed in the whole accommodating gap 21, a closed impermeable layer is arranged around the expansion joint 51, external rainwater, sand dust and the like can not enter the expansion joint 51 again, the use of facilities in the open cut tunnel 5 and the running of vehicles can not be influenced, and the open cut tunnel 5 can be safely and reliably used.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims (10)

1. The utility model provides a open cut tunnel lining expansion joint protection architecture which characterized in that includes:
The number of the permanent seats is two, and the permanent seats are respectively arranged at two sides of the lining expansion joint and are fixedly connected with the open cut tunnel;
The corrugated steel plates are arranged in an arc shape and are circumferentially arranged along the open cut tunnel; the corrugated steel plate is arranged between the two fixing seats, and two sides of the corrugated steel plate are fixedly connected with the two fixing seats respectively; the corrugated steel plate is positioned above the lining expansion joint, an accommodating gap is formed between the corrugated steel plate and the outer side face of the open cut tunnel, and a communication hole communicated with the accommodating gap is formed in the corrugated steel plate; two ends of the corrugated steel plate are fixedly connected with the foundation structures at two sides of the open cut tunnel;
And the filler is filled in the accommodating gap from the communication hole and is used for forming an anti-seepage layer for sealing the expansion joint between the corrugated steel plate and the two fixing seats.
2. The open cut tunnel lining expansion joint protection structure according to claim 1, wherein the fixing base comprises an auxiliary mounting plate and a vertical mounting plate fixedly mounted on one side of the upper end of the auxiliary mounting plate, the auxiliary mounting plate is fixedly connected with the outer side of the open cut tunnel, side flanges corresponding to the vertical mounting plate are arranged on two sides of the corrugated steel plate, connecting holes are formed in the vertical mounting plate, and the vertical mounting plate and the side flanges are fixedly locked through bolts and nuts.
3. The open cut tunnel lining expansion joint protection structure according to claim 2, wherein a sealing gasket is provided on the lower end face of the auxiliary mounting plate.
4. The open cut tunnel lining expansion joint protection structure according to claim 2, wherein the fixing base is of an arc-shaped structure corresponding to the corrugated steel plate.
5. The open cut tunnel lining expansion joint protection structure according to claim 1, wherein both ends of the corrugated steel plate are provided with end face flanges, and the end face flanges are provided with connecting holes; foundation bolts are prefabricated on the foundation structure, and the end face flange is connected with the foundation structure through the foundation bolts and is locked and fixed through nuts.
6. The open cut tunnel lining expansion joint protection structure according to claim 5, wherein the foundation bolt is further provided with an elastic member, and the nut is pressed on the elastic member from top to bottom.
7. The open cut tunnel lining expansion joint protection structure according to claim 5, wherein the connecting hole comprises a plurality of elongated holes arranged along the axis direction of the corrugated steel plate, and the length direction of the elongated holes is consistent with the axis direction of the corrugated steel plate.
8. The open cut tunnel lining expansion joint protection structure according to claim 1, wherein a protective layer is sprayed on the outer side surface of the corrugated steel plate.
9. The open cut tunnel lining expansion joint protection structure according to claim 1, wherein the filler is polyethylene foam material.
10. An open cut tunnel comprising the open cut tunnel lining expansion joint protection structure according to any one of claims 1 to 9.
CN202322406698.4U 2023-09-05 2023-09-05 Open cut tunnel lining expansion joint protection structure and open cut tunnel Active CN220849695U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202322406698.4U CN220849695U (en) 2023-09-05 2023-09-05 Open cut tunnel lining expansion joint protection structure and open cut tunnel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202322406698.4U CN220849695U (en) 2023-09-05 2023-09-05 Open cut tunnel lining expansion joint protection structure and open cut tunnel

Publications (1)

Publication Number Publication Date
CN220849695U true CN220849695U (en) 2024-04-26

Family

ID=90743314

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202322406698.4U Active CN220849695U (en) 2023-09-05 2023-09-05 Open cut tunnel lining expansion joint protection structure and open cut tunnel

Country Status (1)

Country Link
CN (1) CN220849695U (en)

Similar Documents

Publication Publication Date Title
CN108677769B (en) Double-deck buckled plate is assembled and is encircleed culvert structure
CN107435547B (en) Corrugated plate assembly for supporting and tunnel supporting method
CN220849695U (en) Open cut tunnel lining expansion joint protection structure and open cut tunnel
CN109457876B (en) Metal roof system with hidden maintenance horse way
CN217679972U (en) Connecting structure for assembled type external-hanging filling wallboard
CN215565997U (en) Prefabricated assembled arch wall structure of railway tunnel
CN213508003U (en) Damper device suitable for integral bridge and integral bridge
CN116516741A (en) Overhead double-track noise reduction system
CN210606555U (en) High-rise building bill-board mounting structure
CN210068201U (en) Corrugated plate supporting assembly
CN211498935U (en) Cantilever type retaining wall
CN113981904A (en) Water stopping installation structure and method between new concrete and old concrete
CN112376670A (en) Flexible connection structure between reinforced concrete pipes and construction method
CN111979909A (en) Anti-cracking bridge deck expansion joint device and construction method
CN218932858U (en) Steel-concrete combined high-speed bridge expansion device
CN108589797B (en) Underground structure and pier column separated type node waterproof system
CN219412672U (en) Prefabricated flue box culvert, integral assembly type flue structure and shield tunnel
CN210887819U (en) Enhancement mode assembled roofing cable seat structure
CN111287034A (en) Protective device for tramcar rail
CN110777843A (en) Cantilever type retaining wall and construction method thereof
CN219690417U (en) Flood control water-proof structure
CN220868553U (en) Photovoltaic integrated outer wall
CN220364819U (en) Temporary road structure for subway upper cover building construction
CN213649558U (en) Side wall panel assembly of railway vehicle
CN211286335U (en) Vibration-isolating roofing equipment foundation structure

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant