CN104775844A - Design method for fire and smoke resisting separated air curtain of open stairway of subway station - Google Patents
Design method for fire and smoke resisting separated air curtain of open stairway of subway station Download PDFInfo
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- CN104775844A CN104775844A CN201510213727.2A CN201510213727A CN104775844A CN 104775844 A CN104775844 A CN 104775844A CN 201510213727 A CN201510213727 A CN 201510213727A CN 104775844 A CN104775844 A CN 104775844A
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- Prior art keywords
- air curtain
- fire
- subway
- smoke
- subway station
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- 239000000779 smoke Substances 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000013461 design Methods 0.000 title claims abstract description 15
- 238000004088 simulation Methods 0.000 claims abstract description 12
- 238000002474 experimental method Methods 0.000 claims abstract description 10
- 238000012360 testing method Methods 0.000 claims abstract description 6
- 238000004364 calculation method Methods 0.000 claims abstract description 4
- 238000004519 manufacturing process Methods 0.000 claims abstract description 4
- 235000019504 cigarettes Nutrition 0.000 claims description 15
- 238000009434 installation Methods 0.000 claims description 13
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 10
- 239000003546 flue gas Substances 0.000 claims description 10
- 238000012937 correction Methods 0.000 claims description 3
- 238000012795 verification Methods 0.000 claims description 3
- 238000005094 computer simulation Methods 0.000 abstract 4
- 238000005516 engineering process Methods 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Classifications
-
- 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
- E21F5/00—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
The invention discloses a design method for a fire and smoke resisting separated air curtain of an open stairway of a subway station. The design method comprises a computer simulation step, a full-size field experiment step and an air curtain producing and mounting step; the computer simulation step is realized by performing full-size computer modeling and calculation on the subway station by using an FDS (Fire Dynamics Simulator); the full-size field experiment step is realized by conducting a full-size experiment in the subway station to obtain experimental data under typical fire source power; testing the effectiveness of the smoke control effect of the air curtain under the typical fire source power, and meanwhile, verifying the effectiveness of numerical simulation; the air curtain producing and mounting step is realized by performing design, production, mounting and use of the air curtain at the open stairway of the subway station according to air curtain parameters obtained by computer simulation and full-size field experiment, wherein the parameters comprise air curtain size, a smog sensor threshold for triggering starting of the air curtain, an air curtain mounting position, wind speed size, a wind direction inclination and the like.
Description
Technical field
Patent of the present invention belongs to technical field of fire hazard safety, specifically, the present invention relates to a kind of method for designing for subway station open stairway fire-proof smoke-proof separate air air curtain.
Background technology
After reform and opening-up, the level of urbanization of China improves constantly, and city area constantly expands, and urban traffic pressure is also aggravated thereupon.Subway, as a kind of new traffic tool, can share urban traffic pressure well, but subway itself exists many potential safety hazards.Subway is huge as a kind of operation route, the underground traffic instrument of complex circuit, and running environment is different from general ground traffic, has the features such as visitors flowrate is large, fire escape is single, once breaking out of fire, extremely easily causes the dead group of group to hinder accident.
Safe escape, the reduction property loss of personnel during for ensureing that underground fire hazard occurs, the smoke evacuation system of subway and evacuation management system are carried out rational setting and are just seemed very necessary, and also seem very urgent for the research of subway station fire-proof smoke-proof isolation technique.Air curtain, in current building, especially in subway station, is use a kind of fire-proof smoke-proof isolation technique comparatively widely.Fire early period of origination, air curtain gear cigarette technology can separate instrument as the effective fire-proof smoke-proof of one; In fire and smoke spread process, air curtain effectively can stop fire and smoke spread when not affecting smoke evacuation system smoke evacuation, therefore air curtain gear cigarette technology is a kind of effective flue gas barrier technique, suitably should strengthen the application of air curtain at staircase mouth place, building, subway station and popularize.But the validity of its gear cigarette effect is mainly by air curtain wind speed and inclination effect, does not solve at present to the determination technology of air curtain wind speed and inclination angle optimum range.
In view of the foregoing, utilize computer mould to fit full-scalely to test on the spot, under giving different wind speed and inclination angle, subway station open stairway utilizes air curtain to keep off the effect of cigarette, and determine critical speed, the wind direction requirement of air curtain gear cigarette, for the application of subway station air curtain gear cigarette provides technical support.
Summary of the invention
The object of the present invention is to provide a kind of method for designing for subway station open stairway fire-proof smoke-proof separate air air curtain, not only the degree of accuracy be high, applicability is wide for this method for designing, effective, but also can megastore etc. be promoted the use of.
Object of the present invention can be realized by following scheme:
For a method for designing for subway station open stairway fire-proof smoke-proof separate air air curtain, it is characterized in that: the step of this method for designing is as follows:
Step (1), utilize Numerical Simulation on Fire software FDS (Fire Dynamics Simulator), full-scale modeling is carried out in subway station for reality, and carry out the numerical simulation calculation of air curtain gear cigarette, in conjunction with correlation theories knowledge, air curtain gear plume field is analyzed, tentatively determine the designing requirement of air curtain gear cigarette;
Step (2), in subway station, carry out full-scale experiment, obtain the experimental data under typical fire source power; Under testing typical fire source power, the validity of air curtain gear cigarette effect; Simultaneous verification and correction numerical simulation result;
The result that step (3), Comprehensive Correlation step (1) and step (2) draw, determine air curtain relevant parameter, parameter comprises air curtain size, triggers the smoke detectors threshold value, air curtain installation site, wind speed size, wind direction inclination angle etc. of air curtain startup;
Step (4), according to obtained air curtain relevant parameter, design and fabrication is applicable to the air curtain of the uncovered stair of specific subway platform, and carries out installation application.
Described method for designing is applicable to the air curtain of the uncovered stair of specific subway platform, when subway breaking out of fire, fire and smoke spread is to air curtain place, when reaching smoke detectors trigger value, air curtain is opened automatically, the air curtain inclination angle produced conforms to design load with wind speed, thus obstruct flue gas spreads outside subway platform open stairway, thus in auxiliary subway, personnel in time, successfully evacuate to outside subway.
The subway platform open stairway of air curtain is being installed, when subway breaking out of fire, fire and smoke spread is to air curtain place, when reaching smoke detectors trigger value, air curtain is opened automatically, its inclination angle conforms to design load with wind speed, can intercept flue gas to spread outside subway platform open stairway, thus in auxiliary subway, personnel in time, successfully evacuate to outside subway.
Compared with prior art, the present invention has the following advantages:
(1), the present invention fits in conjunction with computer mould and full-scalely to test on the spot, guarantees high accuracy;
(2), generalization of the present invention is high, can not only be applied to subway station, can promote the use of megastore etc. simultaneously;
(3), the principle of the invention is simple, conveniently realizes.
Accompanying drawing explanation
Fig. 1 is the principle schematic of a kind of method for designing for subway station open stairway fire-proof smoke-proof separate air air curtain of the present invention.Wherein 1 to discharge fume experiment on the spot for air curtain large scale, and 2 be the smoke evacuation of FDS numerical simulation air curtain, and 3 for determining air curtain parameter, and 4 is that air curtain installation is applied, and 5 is application case.
Fig. 2 is the simulated flue gas diffusion effect do not installed air curtain and have air curtain according to design and installation.Wherein scheming (a) is the smoke modelling result of not installing air curtain; Figure (b) is the smoke modelling result having air curtain according to design and installation.
Fig. 3 does not install air curtain and the flue gas of the experiment on the spot diffusion effect according to design and installation air curtain.Wherein scheming (a) is the flue gas experimental result of not installing air curtain; Figure (b) is the flue gas experimental result having air curtain according to design and installation.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, patent of the present invention is described in detail.
For a method for designing for subway station open stairway fire-proof smoke-proof separate air air curtain, the signal of its principle as shown in Figure 1.
In Fig. 1,1 is the smoke evacuation of FDS numerical simulation air curtain, and 2 is air curtain smoke evacuation experiment, and 3 for determining air curtain parameter, and 4 apply for air curtain installation, and 5 is application case.
When using the method, should in accordance with the following steps:
Step (1), utilize Numerical Simulation on Fire software FDS (Fire Dynamics Simulator), full-scale modeling is carried out in subway station for reality, and carry out the numerical simulation calculation of air curtain gear cigarette, in conjunction with correlation theories knowledge, air curtain gear plume field is analyzed, tentatively determine the designing requirement of air curtain gear cigarette;
Step (2), in subway station, carry out full-scale experiment, obtain the experimental data under typical fire source power; Under testing typical fire source power, the validity of air curtain gear cigarette effect; Simultaneous verification and correction numerical simulation result;
The result that step (3), Comprehensive Correlation step (1) and step (2) draw, determine air curtain relevant parameter, parameter comprises air curtain size, triggers the smoke detectors threshold value, air curtain installation site, wind speed size, wind direction inclination angle etc. of air curtain startup;
Step (4), according to obtained air curtain relevant parameter, design and fabrication is applicable to the air curtain of the uncovered stair of specific subway platform, and carries out installation application.
At the uncovered stair of the subway platform being provided with air curtain, when subway breaking out of fire, after fire and smoke spread to air curtain place, after reaching smoke detectors trigger value, air curtain is opened automatically, air curtain can be produced, its inclination angle conforms to design load with wind speed, thus obstruct flue gas spreads outside the uncovered stair of subway platform, thus auxiliarily iron man person also evacuates to outside subway smoothly timely.
After Fig. 2 and Fig. 3 can see installation air curtain, flue gas can be intercepted effectively.
Claims (2)
1., for a method for designing for subway station open stairway fire-proof smoke-proof separate air air curtain, it is characterized in that: the step of this method for designing is as follows:
Step (1), utilize Numerical Simulation on Fire software FDS (Fire Dynamics Simulator), full-scale modeling is carried out in subway station for reality, and carry out the numerical simulation calculation of air curtain gear cigarette, in conjunction with correlation theories knowledge, air curtain gear plume field is analyzed, tentatively determine the designing requirement of air curtain gear cigarette;
Step (2), in subway station, carry out full-scale experiment, obtain the experimental data under typical fire source power; Under testing typical fire source power, the validity of air curtain gear cigarette effect; Simultaneous verification and correction numerical simulation result;
The result that step (3), Comprehensive Correlation step (1) and step (2) draw, determine air curtain relevant parameter, parameter comprises air curtain size, the smoke detectors threshold value triggering air curtain startup, air curtain installation site, wind speed size, wind direction inclination angle;
Step (4), according to obtained air curtain relevant parameter, design and fabrication is applicable to the air curtain of the uncovered stair of specific subway platform, and carries out installation application.
2. a kind of method for designing for subway station open stairway fire-proof smoke-proof separate air air curtain according to claim 1, it is characterized in that: described method for designing is applicable to the air curtain of the uncovered stair of specific subway platform, when subway breaking out of fire, fire and smoke spread is to air curtain place, when reaching smoke detectors trigger value, air curtain is opened automatically, the air curtain inclination angle produced conforms to design load with wind speed, thus obstruct flue gas spreads outside subway platform open stairway, thus in auxiliary subway, personnel in time, successfully evacuate to outside subway.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510213727.2A CN104775844A (en) | 2015-04-29 | 2015-04-29 | Design method for fire and smoke resisting separated air curtain of open stairway of subway station |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510213727.2A CN104775844A (en) | 2015-04-29 | 2015-04-29 | Design method for fire and smoke resisting separated air curtain of open stairway of subway station |
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| CN104775844A true CN104775844A (en) | 2015-07-15 |
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| CN201510213727.2A Pending CN104775844A (en) | 2015-04-29 | 2015-04-29 | Design method for fire and smoke resisting separated air curtain of open stairway of subway station |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105221180A (en) * | 2015-10-10 | 2016-01-06 | 上海市政工程设计研究总院（集团）有限公司 | A kind of subway platform fire separation method |
| CN105370309A (en) * | 2015-10-10 | 2016-03-02 | 上海市政工程设计研究总院（集团）有限公司 | Fire separation device for subway platform |
| CN108681649A (en) * | 2018-05-24 | 2018-10-19 | 西南交通大学 | City integrated piping lane cable cabin fire disaster simulation method and device |
-
2015
- 2015-04-29 CN CN201510213727.2A patent/CN104775844A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105221180A (en) * | 2015-10-10 | 2016-01-06 | 上海市政工程设计研究总院（集团）有限公司 | A kind of subway platform fire separation method |
| CN105370309A (en) * | 2015-10-10 | 2016-03-02 | 上海市政工程设计研究总院（集团）有限公司 | Fire separation device for subway platform |
| CN105221180B (en) * | 2015-10-10 | 2020-06-05 | 上海市政工程设计研究总院（集团）有限公司 | Subway platform fire prevention separation method |
| CN108681649A (en) * | 2018-05-24 | 2018-10-19 | 西南交通大学 | City integrated piping lane cable cabin fire disaster simulation method and device |
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Application publication date: 20150715 |
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