CN204041090U - The flue sheet structure of tunnel exhast duct - Google Patents
The flue sheet structure of tunnel exhast duct Download PDFInfo
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- CN204041090U CN204041090U CN201420429508.9U CN201420429508U CN204041090U CN 204041090 U CN204041090 U CN 204041090U CN 201420429508 U CN201420429508 U CN 201420429508U CN 204041090 U CN204041090 U CN 204041090U
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Abstract
The utility model discloses the flue sheet structure of a kind of tunnel exhast duct, comprise some prefabricated flue plates, described prefabricated flue plate splices successively along length of tunnel direction, the cross section of prefabricated flue plate is arch, described prefabricated flue plate has a protruding end face, concave bottom surfaces and two docking end faces, butt end described in two is arranged towards the back of the body, described protruding end face and described concave bottom surfaces are arranged on described in two docks between end face, protruding end face is in above concave bottom surfaces, the junction of two docking end faces and protruding end face is all formed with strip breach, contiguous prefabricated flue plate is docked by described docking end face and described breach, cast-in-situ steel reinforced concrete is filled with in described breach.The utility model adopts domes plate, the Long-term Deflection under dead load effect can be weakened, the infiltration of tunnel vault simultaneously enters in tunnel drainage ditch, to reduce the impact of wet environment on plant equipment in flue after can being collected to flue sheet both sides by the arch gradient.
Description
Technical field
The utility model relates to the technical field of flue sheet structure design, particularly relates to the flue sheet structure of a kind of tunnel exhast duct.
Background technology
For meeting the comfortableness in tunnel normal operation situation and the safety under extreme case (fire), major long tunnel will arrange mechanical type ventilation smoke extraction system usually.The design of current tunnel smoke evacuation combines with draft type substantially, is ventilation function, meets the requirement of ring control in normal condition; And being smoke evacuation, Tobacco Control function in case of fire, its main purpose is that personnel create safe evacuation route and help firefighter to arrive scene of fire smoothly by bus.
The mode of smoke evacuation can be classified as two kinds: horizontal fume exhausting type and longitudinal fume exhausting type.Transversal ventilation mode arranges air outlet and exhast duct on top, tunnel, and in tunnel, gas is drained in the isolated exhast duct of tunnel top by the air outlet of tunnel top, then discharge extraneous by special vertical shaft or air outlet.Longitudinal ventilation mode exactly by producing longitudinally distinguished and admirable achieving the goal in tunnel.To sum up, beam wind realizes primarily of blower fan horizontal in the jet blower be arranged in exhast duct and tunnel, when tunnel ventilation, does not substantially produce the wind of longitudinal flow in tunnel, only has the beam wind that faint longitudinal natural wind and blower fan produce.In shield tunnel, because shield structure is generally circular cross section, the space that tunnel upper is vacated can as exhast duct.Domestic and international each conflagration test room passes through the multiple method such as full-scale test, CFD simulation, to flow of flue gas feature extraction ventilation smoke exhaust standard during tunnel fire hazard.PIARC issued " FireandSmoke Control in Road Tunnels 05.05.B " in 1999, within 2004, issue directive/guides such as " Systems and Equipment for Fire and Smoke Control in Road Tunnels ", determined in tunnel fire hazard scene, plume control, improve detailed requirement and suggestion in structural design for fire safety criterion etc.Smog control in limited range, can be improved the evacuation condition of blocking operating mode by the emphasis smoke evacuation technology that such as tunnel, Tokyo Bay, Shanghai Changjiang River tunnel use.
So-called smoke evacuation system refers to along tunnel upper longitudinal and arranges smoke vent opening to a determining deviation, under fire working, realizes the control to flow of flue gas in tunnel by opened smoke-discharging mouth, for tunnel evacuation and fire-fighting and rescue provide stable environment.In shield tunnel, particularly in overlength shield tunnel, emphasis smoke evacuation is widely adopted, and smoke vent is arranged on the idle space at circular tunnel top usually, and smoke vent and track, tunnel are separated by flue sheet.
The mode that applies of current flue sheet mainly contains cast-in-place and prefabricated two kinds of modes, and construction period, the surface finish of cast-in-place flue sheet are difficult to engineering demands usually.Prefabricated assembled component has the advantages such as construction is convenient, system easy to control the quality and is widely adopted, and seam quality then becomes the key of assembling flue sheet construction control.Not yet find for similar tunnel flue sheet seam construction both at home and abroad at present, this be in positive/negative-pressure alternating action environment under, must the seam construction of sealing performance be ensured.
Therefore, the applicant is devoted to exploitation one can solve flue internal drainage problem and flue sheet dead load Long-term Deflection problem, and the flue sheet structure of the tunnel exhast duct of raising overall sealing performance.
Utility model content
Because the above-mentioned deficiency of prior art, the utility model proposes one can solve flue internal drainage problem and flue sheet dead load Long-term Deflection problem, and the flue sheet structure of the tunnel exhast duct of raising overall sealing performance.
For achieving the above object, the utility model provides the flue sheet structure of a kind of tunnel exhast duct, comprise some prefabricated flue plates, described prefabricated flue plate splices successively along length of tunnel direction, the cross section of described prefabricated flue plate is arch, described prefabricated flue plate has a protruding end face, concave bottom surfaces and two docking end faces, butt end described in two is arranged towards the back of the body, described protruding end face and described concave bottom surfaces are arranged on described in two docks between end face, described protruding end face is in above described concave bottom surfaces, the junction of docking end face and described protruding end face described in two is all formed with strip breach, contiguous prefabricated flue plate is docked by described docking end face and described breach, cast-in-situ steel reinforced concrete is filled with in described breach.
Preferably, it is trapezoidal strip groove that two breach of docking are combined to form a cross section, and the described groove notch area be positioned on described protruding end face is less than the groove bottom area of described groove.
Preferably, two inside walls of described groove are equipped with polyethylene and fill out shrouding.
Preferably, contiguous prefabricated flue plate carries out the docking end face that docks is disposed with fireproof seal gum, mineral wool, polyethylene bar, fireproof seal gum and described cast-in-situ steel reinforced concrete by concave bottom surfaces side to protruding top surface side.
Preferably, the protruding end face of described prefabricated flue plate is provided with the silicon powder concrete layer that with the addition of silica flour, the concave bottom surfaces of described prefabricated flue plate is provided with the polypropylene fiber concrete layer that with the addition of polypropylene fibre.
Preferably, polypropylene fibre is added with in described cast-in-situ steel reinforced concrete.
The beneficial effect of the flue sheet structure of tunnel of the present utility model exhast duct is as follows:
1) the flue sheet structure of tunnel of the present utility model exhast duct adopts domes plate, the Long-term Deflection under dead load effect can be weakened, the infiltration of tunnel vault simultaneously enters in tunnel drainage ditch, to reduce the impact of wet environment on plant equipment in flue after can being collected to flue sheet both sides by the arch gradient.
2) joint form between the prefabricated flue plate of the flue sheet structure of tunnel of the present utility model exhast duct, adopting and presetting breach docking Formation cross-section is trapezoidal strip groove, and the groove bottom area that the described groove notch area be positioned on described protruding end face is less than described groove is set, under ensureing negative pressure condition by trapezoidal seam, built-in joint filler is not sucked out.
3) the flue sheet structure of tunnel of the present utility model exhast duct also adopts the Waterproof gum etc. with certain hot strength to carry out filleting, meets the sealing performance requirement of seam.
4) the functionally gradient steel concrete of the concrete structure employing factorial praluction of prefabricated flue plate of the present utility model is built and is formed, namely, be made up of the concrete that 3 layers are added different additive according to different function requirements, be followed successively by silicon powder concrete layer, conventional concrete layer, polypropylene fiber concrete layer from top to bottom, meet surface roughness, normal carrying, fireproof requirement respectively.
Be described further below with reference to the technique effect of accompanying drawing to design of the present utility model, concrete structure and generation, to understand the purpose of this utility model, characteristic sum effect fully.
Accompanying drawing explanation
Fig. 1 is the flue sheet structural representation of specific embodiment tunnel exhast duct.
Fig. 2 is the structural representation of specific embodiment contiguous prefabricated flue plate joint.
Fig. 3 is the A place enlarged diagram of Fig. 2.
Fig. 4 is the application state schematic diagram of the flue sheet of specific embodiment tunnel exhast duct.
Detailed description of the invention
As shown in Figure 1, the flue sheet structure of a kind of tunnel exhast duct of the present embodiment, comprise some prefabricated flue plates 100, prefabricated flue plate 100 splices successively along length of tunnel direction, the cross section of prefabricated flue plate 100 is arch, prefabricated flue plate has a protruding end face 110, concave bottom surfaces 120 and two docking end faces 130, two docking end faces 130 are supported or opposed setting, protruding end face 110 and concave bottom surfaces 120 are arranged between two docking end faces 130, and protruding end face 110 is in above concave bottom surfaces 120.As shown in Figures 2 and 3, two docking end faces 130 are all formed with strip breach 140 with the junction of protruding end face 110, and contiguous prefabricated flue plate is docked by docking end face 130 and breach 140, is filled with cast-in-situ steel reinforced concrete 200 in breach 140.
Shown in composition graphs 2 and Fig. 3, it is trapezoidal strip groove that two breach 140 of docking are combined to form a cross section, the described groove notch area be positioned on protruding end face 110 is less than the groove bottom area of described groove, and on two inside walls of described groove, be equipped with polyethylene fill out shrouding 300, contiguous prefabricated flue plate 100 carries out the docking end face that docks is disposed with fireproof seal gum 400 by concave bottom surfaces 120 side to protruding end face 110 side, mineral wool 500, polyethylene bar 600, fireproof seal gum 400 and cast-in-situ steel reinforced concrete 200, the protruding end face 110 of prefabricated flue plate 100 is provided with the silicon powder concrete layer that with the addition of silica flour, the concave bottom surfaces 120 of prefabricated flue plate 100 is provided with the polypropylene fiber concrete layer that with the addition of polypropylene fibre, polypropylene fibre is added with in cast-in-situ steel reinforced concrete 200.
Exemplary, as shown in Figure 4, the situation that the flue sheet structure of the present embodiment tunnel exhast duct is particularly applicable on shield tunnel is as follows:
The prefabricated flue plate 100 of the present embodiment adopts the functionally gradient steel concrete of factorial praluction to build prefabricated forming, namely, be made up of the concrete that three layers are added different additive by different function requirements, the protruding end face 110 of prefabricated flue plate 100 is built the silicon powder concrete layer that with the addition of silica flour, the concave bottom surfaces 120 of prefabricated flue plate 100 is built the polypropylene fiber concrete layer that with the addition of polypropylene fibre, intermediate layer is conventional concrete layer, meets surface roughness, normal carrying and fireproof requirement respectively.Wherein, also need for the situation of different shield tunnel and demand, the arch angle of adjustment prefabricated flue plate and concrete size, repeat no more herein.
Prefabricated flue plate 100 is transported to the flue sheet erecting yard in shield tunnel, on-site consolidation is carried out in shield tunnel, as shown in Figure 1, polylith prefabricated flue plate 100 is docked successively along length of tunnel direction, carry out at contiguous prefabricated flue plate 100 the docking end face 130 that docks is disposed with fireproof seal gum by concave bottom surfaces side to protruding top surface side, mineral wool, polyethylene bar, fireproof seal gum and described cast-in-situ steel reinforced concrete (shown in figure 2), realize being tightly connected of prefabricated flue plate 100 and form the flue sheet structure of tunnel exhast duct, be applied in as shown in Figure 4 in shield tunnel, the concave bottom surfaces 120 making flue sheet structure meet side, track plays effective fire prevention, the protruding end face 110 smooth surface windage of meeting smoke vent is little, ventilation effect is good, and due to the arcuate surface of its projection and the arch gradient of entirety, solve the drainage problem in flue, better can resist the Long-term Deflection problem of flue structure deadweight simultaneously, connecting structure on the docking end face 130 of contiguous prefabricated flue plate 100 and breach 140 effectively ensure that connection reliability and the sealing performance of interface under the environment of positive/negative-pressure alternating action further.
More than describe preferred embodiment of the present utility model in detail.Should be appreciated that those of ordinary skill in the art just can make many modifications and variations according to design of the present utility model without the need to creative work.Therefore, all technician in the art according to design of the present utility model on the basis of existing technology by the available technical scheme of logical analysis, reasoning, or a limited experiment, all should by the determined protection domain of claims.
Claims (6)
1. the flue sheet structure of a tunnel exhast duct, comprise some prefabricated flue plates, described prefabricated flue plate splices successively along length of tunnel direction, it is characterized in that: the cross section of described prefabricated flue plate is arch, described prefabricated flue plate has a protruding end face, concave bottom surfaces and two docking end faces, butt end described in two is arranged towards the back of the body, described protruding end face and described concave bottom surfaces are arranged on described in two docks between end face, described protruding end face is in above described concave bottom surfaces, the junction of docking end face and described protruding end face described in two is all formed with strip breach, contiguous prefabricated flue plate is docked by described docking end face and described breach, cast-in-situ steel reinforced concrete is filled with in described breach.
2. the flue sheet structure of tunnel as claimed in claim 1 exhast duct, it is characterized in that: it is trapezoidal strip groove that two breach of docking are combined to form a cross section, and the described groove notch area be positioned on described protruding end face is less than the groove bottom area of described groove.
3. the flue sheet structure of tunnel as claimed in claim 2 exhast duct, is characterized in that: two inside walls of described groove are equipped with polyethylene and fill out shrouding.
4. the flue sheet structure of the tunnel exhast duct as described in any one of claims 1 to 3, is characterized in that: contiguous prefabricated flue plate carries out the docking end face that docks is disposed with fireproof seal gum, mineral wool, polyethylene bar, fireproof seal gum and described cast-in-situ steel reinforced concrete by concave bottom surfaces side to protruding top surface side.
5. the flue sheet structure of the tunnel exhast duct as described in any one of claims 1 to 3, it is characterized in that: the protruding end face of described prefabricated flue plate is provided with the silicon powder concrete layer that with the addition of silica flour, the concave bottom surfaces of described prefabricated flue plate is provided with the polypropylene fiber concrete layer that with the addition of polypropylene fibre.
6. the flue sheet structure of the tunnel exhast duct as described in any one of claims 1 to 3, is characterized in that: be added with polypropylene fibre in described cast-in-situ steel reinforced concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420429508.9U CN204041090U (en) | 2014-07-31 | 2014-07-31 | The flue sheet structure of tunnel exhast duct |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420429508.9U CN204041090U (en) | 2014-07-31 | 2014-07-31 | The flue sheet structure of tunnel exhast duct |
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| Publication Number | Publication Date |
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| CN204041090U true CN204041090U (en) | 2014-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420429508.9U Withdrawn - After Issue CN204041090U (en) | 2014-07-31 | 2014-07-31 | The flue sheet structure of tunnel exhast duct |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104088657A (en) * | 2014-07-31 | 2014-10-08 | 上海市城市建设设计研究总院 | Flue sheet structure for tunnel exhaust duct |
| CN104948216A (en) * | 2015-06-04 | 2015-09-30 | 浙江海洋学院 | Dual-use water draining and air exhausting grill for tunnel |
| CN107100661A (en) * | 2017-04-28 | 2017-08-29 | 上海城建物资有限公司 | A kind of prefabricated assembled ultra-high performance concrete flue sheet structure |
-
2014
- 2014-07-31 CN CN201420429508.9U patent/CN204041090U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104088657A (en) * | 2014-07-31 | 2014-10-08 | 上海市城市建设设计研究总院 | Flue sheet structure for tunnel exhaust duct |
| CN104088657B (en) * | 2014-07-31 | 2016-01-27 | 上海市城市建设设计研究总院 | The flue sheet structure of tunnel exhast duct |
| CN104948216A (en) * | 2015-06-04 | 2015-09-30 | 浙江海洋学院 | Dual-use water draining and air exhausting grill for tunnel |
| CN107100661A (en) * | 2017-04-28 | 2017-08-29 | 上海城建物资有限公司 | A kind of prefabricated assembled ultra-high performance concrete flue sheet structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141224 Effective date of abandoning: 20160127 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |