CN208885341U - A kind of armored concrete foot plank evacuation platform for tunnel - Google Patents
A kind of armored concrete foot plank evacuation platform for tunnel Download PDFInfo
- Publication number
- CN208885341U CN208885341U CN201821588683.7U CN201821588683U CN208885341U CN 208885341 U CN208885341 U CN 208885341U CN 201821588683 U CN201821588683 U CN 201821588683U CN 208885341 U CN208885341 U CN 208885341U
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- bracket
- horizontal shore
- foot plank
- concrete foot
- tunnel
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Abstract
The utility model discloses a kind of armored concrete foot plank evacuation platforms for tunnel comprising concrete foot plank and several brackets；Bracket is mounted on the inside of shield tunnel；Concrete foot plank is erected on bracket；The surface of bracket is followed successively by galvanizing film and intumescent fire-resistant coating from inside to outside；Each bracket includes horizontal shore and raker beam；Horizontal shore is horizontally disposed, and one end is connect with the pre-buried channel flow of shield tunnel inner wall, and the other end is hanging；The lower section of horizontal shore is arranged in raker beam, and one end is connect with the pre-buried channel flow of shield tunnel inner wall, and the other end is connected to the bottom surface of horizontal shore.The utility model has the advantages that: refractory coating is used, the fire resistance of bracket can be significantly increased, even if fire occurs, bracket still can keep enough bearing capacitys.It using galvanizing film, can prevent bracket from corroding, enhance the durability of bracket.
Description
Technical field
The utility model relates to the evacuation platforms of shield tunnel, and in particular to a kind of armored concrete walking for tunnel
Plate evacuation platform.
Background technique
Shield construction has fast speed of application, with small vibration, low noise, the safe and reliable, spy small to surrounding environment influence
Point, it has also become urban track traffic underground section is built using most one of construction technologies, but the circle that shield duct piece is formed
Cavern's sectional dimension is limited, meet limit require while, carry out the reasonable Arrangement of large number of equipment pipeline and with section of jurisdiction can
It is particularly significant by connecting.Evacuation platform is responsible for daily operation maintenance in subterranean tunnel and passenger safety is quickly dredged in special circumstances
Scattered important function is the critical facility that must be provided in tunnel.
Shield tunnel evacuation platform in the prior art generallys use more light polymer composite as walking
Plate, however polymer composite foot plank durability is poor, usually only 20 to 30 years service life, and macromolecule is compound
Material foot plank fire resistance is general, and polymer composite foot plank is easily deformed collapsing when meeting with fire.
Summary of the invention
The purpose of this utility model is mixed according to a kind of reinforcing bar for tunnel in place of above-mentioned the deficiencies in the prior art, is provided
Solidifying soil foot plank evacuation platform, the armored concrete foot plank evacuation platform improve evacuation platform by using the component of fire resisting
Fire resistance.
The utility model aim realization is completed by following technical scheme:
A kind of armored concrete foot plank evacuation platform for tunnel comprising concrete foot plank and several branch
Frame；The bracket is mounted on the inside of shield tunnel；The concrete foot plank is set up on the bracket；The table of the bracket
Face is followed successively by galvanizing film and intumescent fire-resistant coating from inside to outside；Each bracket include horizontal shore and tiltedly
Support beam；The horizontal shore is horizontally disposed, and one end is connect with the pre-buried channel flow of the shield tunnel inner wall, another
One end is hanging；The lower section of the horizontal shore is arranged in the raker beam, and one end is pre-buried with the shield tunnel inner wall
Conduit connection, the other end are connected to the bottom surface of the horizontal shore.
It is attached by welding between the horizontal shore described in the bracket and the raker beam；It is described
Angle between horizontal shore and the raker beam is 45 °.
The concrete foot plank extends along the axis direction of the shield tunnel；Several brackets are along the shield tunnel
The axis direction in road is spaced apart；The distance between adjacent described bracket is 1m to 1.4m.
The horizontal shore is I-steel, and the horizontal shore includes web, top plate and bottom plate；The web edge
Vertical direction setting, is connected between the top plate and the bottom plate；If being provided between the top plate and the bottom plate
Dry stiffening plate, the stiffening plate are connected between the top plate and the bottom plate.
The utility model has the advantages that: by using refractory coating, the fire resistance of bracket can be significantly increased, even if shield
Fire occurs for tunnel internal, and bracket still can keep enough bearing capacitys；By using galvanizing film, bracket can be prevented
It is corroded during long-time service, enhances the durability of bracket；Prefabricated concrete foot plank has fire resistance
The advantages that good, non-aging and at low cost.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Specific embodiment
The feature of the utility model and other correlated characteristics are made further specifically by embodiment below in conjunction with attached drawing
It is bright, in order to the understanding of technical staff of the same trade:
As shown in Figure 1, marking 1-10 to be respectively as follows: concrete foot plank 1, bracket 2, shield tunnel 3, horizontal shore in figure
4, raker beam 5, junction steel plate 6, web 7, top plate 8, bottom plate 9, stiffening plate 10.
Embodiment: as shown in Figure 1, the present embodiment is flat more particularly to a kind of armored concrete foot plank evacuation for tunnel
Platform comprising concrete foot plank 1 and several brackets 2.Bracket 2 is mounted on the inside of shield tunnel 3；Concrete foot plank
1 is erected on bracket 2.Concrete foot plank 1 extends along the axis direction of shield tunnel 3.Several brackets 2 are along shield tunnel 3
Axis direction is spaced apart；The distance between adjacent stent 2 is 1m to 1.4m.
In the present embodiment, concrete foot plank 1 is precast reinforced concrete structure, with a thickness of 50mm, the length is
1190mm.Each bracket 2 includes horizontal shore 4 and raker beam 5.Horizontal shore 4 is horizontally disposed, one end with
The pre-buried channel flow of 3 inner wall of shield tunnel connects, and the other end is hanging.The lower section of horizontal shore 4, one is arranged in raker beam 5
End is connect with the pre-buried channel flow of 3 inner wall of shield tunnel, and the other end is connected to the bottom surface of horizontal shore 4.
It is being attached by welding between horizontal shore 4 and raker beam 5 in bracket 2；Horizontal shore 4 with
Angle between raker beam 5 is 45 °.Horizontal shore 4 and the end that raker beam 5 is used for and shield tunnel 3 connects are respectively provided with
There is one piece of junction steel plate 6.The size of junction steel plate 6 is 350 × 350 × 20mm.Bolt hole is offered on junction steel plate 6.Connection
Steel plate 6 is connect with horizontal shore 4 and raker beam 5 by welding, and passes through the pre- of bolt and 3 inner wall of shield tunnel
Conduit is buried to be fixedly connected.
In the present embodiment, horizontal shore 4 is I-steel, and horizontal shore 4 includes web 7, top plate 8 and bottom plate 9；Abdomen
Plate 7 is arranged along the vertical direction, is connected between top plate 8 and bottom plate 9.Top plate 8 is contacted for direct with concrete foot plank 1,
The upper surface of top plate 8 is bonded with the lower surface of concrete foot plank 1.Due to concrete foot plank 1 be self-possessed it is larger, top plate 8 and
Four stiffening plates 10 are provided between bottom plate 9.Stiffening plate 10 is vertical with web, is connected between top plate 8 and bottom plate 9.Four
Stiffening plate 10 is symmetrically dispersed in the two of web 7.Stiffening plate 10 can effectively enhance the rigidity and carrying energy of horizontal shore 4
Power.
The horizontal shore 4 and raker beam 5 of bracket 2 are made of H125 fashioned iron, and the steel of the fashioned iron are Q235B steel
Material.Horizontal shore 4 and raker beam 5 are welded using E43 type welding rod.All weld bead heights are not less than 8mm.Bracket 2
After completing, after carrying out derusting by sandblasting (Sa3 grades of derusting grade) to its surface, then using whole galvanizing by dipping processing, shape
At galvanizing film thickness be not less than 85 μm.It is swollen in the surface spraying of the galvanizing film of bracket 2 after the completion of galvanizing by dipping
Swollen type refractory coating.By spraying intumescent fire-resistant coating, it may make the fire endurance of bracket 2 not less than 1.5h.By using
Refractory coating can significantly increase the fire resistance of bracket 2, even if fire occurs inside shield tunnel, bracket 2 still can be kept
Enough bearing capacitys.It by using galvanizing film, can prevent bracket 2 from corroding during long-time service, enhance
The durability of bracket 2.Prefabricated concrete foot plank 1 has many advantages, such as that fire resistance is good, non-aging and at low cost.
Although above embodiments are elaborated referring to conception and embodiment of the attached drawing to the utility model aim,
But those skilled in the art will realize that still may be used in the case where no disengaging claim limits the precondition of range
To make various modifications and variations to the utility model, therefore will not repeat them here.
Claims (4)
1. a kind of armored concrete foot plank evacuation platform for tunnel, it is characterised in that: including concrete foot plank and
Several brackets；The bracket is mounted on the inside of shield tunnel；The concrete foot plank is set up on the bracket；It is described
The surface of bracket is followed successively by galvanizing film and intumescent fire-resistant coating from inside to outside；Each bracket includes horizontally-supported
Beam and raker beam；The horizontal shore is horizontally disposed, the pre-buried channel flow of one end and the shield tunnel inner wall
Connection, the other end are hanging；The raker beam is arranged in the lower section of the horizontal shore, in one end and the shield tunnel
The pre-buried channel flow of wall connects, and the other end is connected to the bottom surface of the horizontal shore.
2. a kind of armored concrete foot plank evacuation platform for tunnel according to claim 1, it is characterised in that:
It is attached by welding between horizontal shore described in the bracket and the raker beam；The horizontal shore
Angle between the raker beam is 45 °.
3. a kind of armored concrete foot plank evacuation platform for tunnel according to claim 1, it is characterised in that: institute
The axis direction that concrete foot plank is stated along the shield tunnel extends；Several brackets are along the axis side of the shield tunnel
To being spaced apart；The distance between adjacent described bracket is 1m to 1.4m.
4. a kind of armored concrete foot plank evacuation platform for tunnel according to claim 1, it is characterised in that: institute
Stating horizontal shore is I-steel, and the horizontal shore includes web, top plate and bottom plate；The web is set along the vertical direction
It sets, is connected between the top plate and the bottom plate；Several stiffening plates are provided between the top plate and the bottom plate,
The stiffening plate is connected between the top plate and the bottom plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821588683.7U CN208885341U (en) | 2018-09-28 | 2018-09-28 | A kind of armored concrete foot plank evacuation platform for tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821588683.7U CN208885341U (en) | 2018-09-28 | 2018-09-28 | A kind of armored concrete foot plank evacuation platform for tunnel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208885341U true CN208885341U (en) | 2019-05-21 |
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ID=66514326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821588683.7U Active CN208885341U (en) | 2018-09-28 | 2018-09-28 | A kind of armored concrete foot plank evacuation platform for tunnel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208885341U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111605566A (en) * | 2020-05-21 | 2020-09-01 | 中铁二院工程集团有限责任公司 | Rail transit evacuation platform capable of resisting high wind pressure |
| CN112127942A (en) * | 2020-08-24 | 2020-12-25 | 中铁第四勘察设计院集团有限公司 | Connection structure of evacuation platform in shield zone at interconnection channel |
-
2018
- 2018-09-28 CN CN201821588683.7U patent/CN208885341U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111605566A (en) * | 2020-05-21 | 2020-09-01 | 中铁二院工程集团有限责任公司 | Rail transit evacuation platform capable of resisting high wind pressure |
| CN111605566B (en) * | 2020-05-21 | 2021-04-27 | 中铁二院工程集团有限责任公司 | Rail transit evacuation platform capable of resisting high wind pressure |
| CN112127942A (en) * | 2020-08-24 | 2020-12-25 | 中铁第四勘察设计院集团有限公司 | Connection structure of evacuation platform in shield zone at interconnection channel |
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