CN102383519B - Natural ventilation building structure for underground passage of street - Google Patents
Natural ventilation building structure for underground passage of street Download PDFInfo
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- CN102383519B CN102383519B CN201110301217.2A CN201110301217A CN102383519B CN 102383519 B CN102383519 B CN 102383519B CN 201110301217 A CN201110301217 A CN 201110301217A CN 102383519 B CN102383519 B CN 102383519B
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- 238000009423 ventilation Methods 0.000 title claims abstract description 54
- 230000000740 bleeding effect Effects 0.000 claims description 13
- 238000010276 construction Methods 0.000 claims description 5
- 239000010410 layer Substances 0.000 description 20
- 230000000694 effects Effects 0.000 description 3
- 239000011229 interlayer Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 2
- 238000007731 hot pressing Methods 0.000 description 2
- 230000003519 ventilatory effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009510 drug design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
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Abstract
The invention relates to a natural ventilation building structure for an underground passage of a street, belonging to the field of the traffic engineering. The building structure of the prior underground passage of the street is not changed, and the ventilation of the underground passage of the street is realized through changing the structures of awnings at underground entryways. The awnings at the left and right entryways are asymmetrical in structure; the planar awning at the left entryway is in the structure of a straight top plate, and the awning at the right entryway is in the structure of a concave curved-surface awning; and supporting columns and horizontal support tubes are adopted to support the planar awning and the concave curved-surface awning. The natural ventilation building structure realizes the natural ventilation of the underground passage of the street without adopting any power device and changing the civil structure of the underground passage of the street, is energy-saving and environmental-friendly and solves the problems that the air environment in the underground passage of the street is poor, the air is contaminated, the wall of the underground passage of the street is moldy and wet, and the health of people entering the underground passage of the street can be harmed.
Description
Technical field
To the present invention relates under one through street underground passage natural ventilation building structure, belong to traffic engineering field.
Background technology
Underground pedestrian passageway is by the restriction of ground level road width, and sleety weather uses safer, to ground landscape and traffic impact less.But in longer underground pedestrian passageway, due to people's residence time longer (as doing small business), particularly old man and weakling, if throw and have rational Design of ventilation, ventilation is not enough, in underground passage, air ambient certainly will be poor, and air becomes dirty, wall is mould wet, works the mischief to the health of the people in admission passage; In addition, also can affect it to use, as the safety etc. of electrical equipment in passage.Under minimum investment and operating cost condition, so how solve the ventilating problem of underground pedestrian passageway.This is a problem demanding prompt solution.
Following several scheme (" building heat-energy air conditioner " Municipal Design and Research Inst. Nanjing City is adopted in general in current engineering, Xie Ninghan, 2001 years the 4th phases, p47): 1. the mode the most extensively adopted is without wind pipe type induced draught, utilize ventilation to fan to entreat position to carry out forced ventilation in the channel, its shortcoming wants power consumption, and motor exists noise.2. the blast impact of ventilating on underground pedestrian passageway is very little, negligible.So, how to take measures, create and be conducive to carrying out the condition of ventilating with blast? one of measure, increase access area, strengthen the effect of blast and hot pressing, make under identical blast and hot pressing function, create larger ventilation motive force, its shortcoming is that construction costs increases; Measure two, increases hole wall height, and is designed to by hole barricade be conducive to the streamlined of ventilation, and profit uses it as ventilation deflector and introduces larger ventilation; Measure three, according to the long-term prevailing wind in locality always arrange hole towards, using population has the longer time towards windward side; Measure four, reduces the exit and entrance gradient, makes to block near hole less, reduces flowing resistance, increase ventilation.It is exactly have symmetry due to building structure that above-mentioned four main measures exists a shortcoming jointly, makes the air flow condition that can only improve underground passage two end entrance source, little to the change of passage centre.How to realize that underground passage is efficient, unpowered, low cost ventilation, its relevant patent is actually rare.
Summary of the invention
The object of this invention is to provide a kind of building structure that can realize down through street underground passage natural ventilation, poor to solve air ambient in underground passage, air be dirty, wall mould wet, to problems such as the health of the people in admission passage work the mischief.
Technical scheme of the present invention is: through street underground passage natural ventilation building structure under one, do not change existing under through the building structure of street underground passage, through the ventilation of street underground passage under being realized by the rain cover structure changing underground entrance passage.
The canopy of entrance, described underground passage natural ventilation building structure left and right adopts unsymmetric structure, the plane canopy 1 at left underground entrance passage 2 place adopts straight top board structure, the canopy at right underground entrance passage place adopts concave curvature rain cover structure, support post 9 and cross binding pipe 8 supporting plane canopy 1 and concave curvature canopy.
Described concave curvature canopy has three layer construction, upper strata is concave curvature canopy transparent outer layer face 7, middle level is heat-sink shell 15, heat-sink shell 15 is provided with air-vent, lower floor is curved surface canopy bottom 13, curved surface canopy bottom 13 seals with the outward flange of concave curvature canopy transparent outer layer face 7 periphery, forms cavity.
Institute tells on concave curvature canopy transparent outer layer face 7 and chimney 6 of bleeding is housed, chimney 6 bottom air inlet port of bleeding is communicated with concave curvature canopy mezzanine space, bleed chimney 6 tube wall and concave curvature canopy transparent outer layer face 7 seals, and the upper port of induced ventilation pipe 12 is communicated with concave curvature canopy central authorities mezzanine spaces.
Described induced ventilation pipe 12 upper port is positioned at the center lowest part inside the bottom 13 of concave curvature canopy, tube wall and curved surface canopy bottom 13 seal, the other end of induced ventilation pipe 12 is to downward-extension, two-way is divided into enter into down through street underground passage 4 entrance, two lower port close to the lower ground through street underground passage 4, and extend one section in passage.
Operating principle of the present invention is: utilize air-flow different, the principle that pressure is also different, air-flow is larger, and pressure is less.When there being wind to blow over street, the right and left access road has air-flow to enter simultaneously.The plane canopy 1 at left underground entrance passage 2 place is flat top, and the canopy at right underground entrance passage 11 place is concave curvature canopy, and this makes the sectional area of two access roades there is huge difference.When left underground entrance passage 2 enters air, air-flow is at access road center cavity expansion, and sectional area is maximum, and sectional area is S, and air-flow velocity is minimum, and pressure is minimum herein.Meanwhile, identical air-flow enters in right underground entrance passage 11, and concave curvature canopy top board structure makes channel cavity shrink, and in access road center, sectional area is minimum, and sectional area is s, s < S.Owing to locating in underground entrance channel center, there is huge difference in sectional area, make when there being air-flow to flow through passage, two passage air-flow velocities there are differences, cross section is that the passage air-flow velocity of S is slow, and cross section is that the passage air-flow velocity of s is fast, makes down to there is differential pressure of atmospheric pressure through street underground passage 4, form convected air, take a breath through street underground passage under realization.
In order to strengthen ventilation effect, when considering calm situation, add solar heat convection current ventilatory.The canopy at right entry passage place adopts concave curvature rain cover structure, and canopy has three layers.Curved surface canopy bottom 13 seals with the outward flange of concave curvature canopy transparent outer layer face 7 periphery, forms cavity.When having sunlight, lighttight heat-sink shell 15 absorbs sunlight, and the temperature in curved surface canopy cavity is heated, and hot gas is excluded by chimney 6 of bleeding.On the other hand, the upper port of its mezzanine space induced ventilation pipe 12 is communicated with the central mezzanine space of concave curvature canopy, and upper port be positioned at concave curvature canopy bottom 13 inside center lowest part, tube wall and curved surface canopy bottom 13 seal, the other end of induced ventilation pipe 12 is to downward-extension, be divided into two-way to enter into down through street underground passage 4 entrance, two lower port are close to the lower ground through street underground passage 4, and two lower port extend internally one section.By this pipe-line system, the lower gas for heating through street underground passage 4 dirt is extracted out, the upper port delivering to induced ventilation pipe 12 enters interlayer cavity and heats, and hot gas travels up to inclined-plane chimney 6 of bleeding and gets rid of, and so just achieves forced convection ventilation by solar energy.
The invention has the beneficial effects as follows: achieve down the natural ventilation through street underground passage, without the need to any power set, also do not change its civil structure, energy-conserving and environment-protective.Solve air ambient in underground passage poor, air be dirty, wall mould wet, to problems such as the health of the people in admission passage work the mischief.
Accompanying drawing explanation
Fig. 1 is top view of the present invention;
Fig. 2 is the present invention's left underground passage entrance A-A sectional view;
Fig. 3 is the present invention's right underground passage entrance B-B sectional view;
Fig. 4 is the main sectional plane schematic diagram of overall structure of the present invention;
In figure, each label is: 1: plane canopy, 2: left underground entrance passage, 3: blast pipe, 4: under through street underground passage, 5: exhaust column, 6: chimney of bleeding, 7: concave curvature canopy transparent outer layer face, 8: cross binding pipe, 9: support post, 10: underground passage entrance steps, 11: right underground entrance passage, 12: induced ventilation pipe, 13: bottom, 14: interlayer staple, 15: heat-sink shell.
Detailed description of the invention
Below in conjunction with drawings and Examples, the invention will be further described, but content of the present invention is not limited to described scope.
Embodiment 1: as Figure 1-4, through street underground passage natural ventilation building structure under one, do not change existing under through the building structure of street underground passage, through the ventilation of street underground passage under being realized by the rain cover structure changing underground entrance passage.
The canopy of entrance, described underground passage natural ventilation building structure left and right adopts unsymmetric structure, the plane canopy 1 at left entry passage 2 place adopts straight top board structure, the canopy at right entry passage place adopts concave curvature rain cover structure, support post 9 and cross binding pipe 8 supporting plane canopy 1 and concave curvature canopy.
Described concave curvature canopy has three layer construction, upper strata is concave curvature canopy transparent outer layer face 7, middle level is heat-sink shell 15, heat-sink shell 15 is provided with air-vent, lower floor is curved surface canopy bottom 13, curved surface canopy bottom 13 seals with the outward flange of concave curvature canopy transparent outer layer face 7 periphery, forms cavity.
Institute tells on concave curvature canopy transparent outer layer face 7 and chimney 6 of bleeding is housed, chimney 6 bottom air inlet port of bleeding is communicated with concave curvature canopy mezzanine space, bleed chimney 6 tube wall and concave curvature canopy transparent outer layer face 7 seals, and the upper port of induced ventilation pipe 12 is communicated with concave curvature canopy central authorities mezzanine spaces.
Described induced ventilation pipe 12 upper port is positioned at the center lowest part inside the bottom 13 of concave curvature canopy, tube wall and curved surface canopy bottom 13 seal, the other end of induced ventilation pipe 12 is to downward-extension, two-way is divided into enter into down through street underground passage 4 entrance, two lower port close to the lower ground through street underground passage 4, and extend one section in passage.
Operating principle of the present invention is: utilize air-flow different, the principle that pressure is also different, air-flow is larger, and pressure is less.When there being wind to blow over street, the right and left access road has air-flow to enter simultaneously.The plane canopy 1 at left underground entrance passage 2 place is flat top, and the canopy at right underground entrance passage 11 place is concave curvature canopy, and this makes the sectional area of two access roades there is huge difference.When left underground entrance passage 2 enters air, air-flow is at access road center cavity expansion, and sectional area is maximum, and sectional area is S, and air-flow velocity is minimum, and pressure is minimum herein.Meanwhile, identical air-flow enters in right underground entrance passage 11, and concave curvature canopy top board structure makes channel cavity shrink, and in access road center, sectional area is minimum, and sectional area is s, s < S.Due to underground entrance channel center place, there is huge difference in sectional area, makes when there being air-flow to flow through passage, under there is differential pressure of atmospheric pressure through street underground passage 4, formation convected air, take a breath through street underground passage under realization.
Embodiment 2: as Figure 1-4, through street underground passage natural ventilation building structure under one, do not change existing under through the building structure of street underground passage, through the ventilation of street underground passage under being realized by the rain cover structure changing underground entrance passage.
The canopy of entrance, described underground passage natural ventilation building structure left and right adopts unsymmetric structure, the plane canopy 1 at left entry passage 2 place adopts straight top board structure, the canopy at right entry passage place adopts concave curvature rain cover structure, support post 9 and cross binding pipe 8 supporting plane canopy 1 and concave curvature canopy.
Described concave curvature canopy has three layer construction, upper strata is concave curvature canopy transparent outer layer face 7, middle level is heat-sink shell 15, heat-sink shell 15 is provided with air-vent, lower floor is curved surface canopy bottom 13, curved surface canopy bottom 13 seals with the outward flange of concave curvature canopy transparent outer layer face 7 periphery, forms cavity.
Institute tells on concave curvature canopy transparent outer layer face 7 and chimney 6 of bleeding is housed, chimney 6 bottom air inlet port of bleeding is communicated with concave curvature canopy mezzanine space, bleed chimney 6 tube wall and concave curvature canopy transparent outer layer face 7 seals, and the upper port of induced ventilation pipe 12 is communicated with concave curvature canopy central authorities mezzanine spaces.
Described induced ventilation pipe 12 upper port is positioned at the center lowest part inside the bottom 13 of concave curvature canopy, tube wall and curved surface canopy bottom 13 seal, the other end of induced ventilation pipe 12 is to downward-extension, two-way is divided into enter into down through street underground passage 4 entrance, two lower port close to the lower ground through street underground passage 4, and extend one section in passage.
Operating principle of the present invention is: in order to strengthen ventilation effect, when considering calm situation, has added solar heat convection current ventilatory.The canopy at right entry passage place adopts concave curvature rain cover structure, and canopy has three layers.Curved surface canopy bottom 13 seals with the outward flange of concave curvature canopy transparent outer layer face 7 periphery, forms cavity.When having sunlight, lighttight heat-sink shell 15 absorbs sunlight, and the temperature in curved surface canopy cavity is heated, and hot gas is excluded by chimney 6 of bleeding.On the other hand, the upper port of its mezzanine space induced ventilation pipe 12 is communicated with the central mezzanine space of concave curvature canopy, and upper port be positioned at concave curvature canopy bottom 13 inside center lowest part, tube wall and curved surface canopy bottom 13 seal, the other end of induced ventilation pipe 12 is to downward-extension, be divided into two-way to enter into down through street underground passage 4 entrance, two lower port are close to the lower ground through street underground passage 4, and two lower port extend internally one section.By this pipe-line system, the lower gas for heating through street underground passage 4 dirt is extracted out, the upper port delivering to induced ventilation pipe 12 enters interlayer cavity and heats, and hot gas travels up to inclined-plane chimney 6 of bleeding and gets rid of, and so just achieves forced convection ventilation by solar energy.
Claims (3)
1. under one kind through street underground passage natural ventilation building structure, it is characterized in that: the canopy of entrance, left and right adopts unsymmetric structure, the plane canopy (1) at left underground entrance passage (2) place adopts straight top board structure, the canopy at right underground entrance passage (11) place adopts concave curvature rain cover structure, support post (9) and cross binding pipe (8) supporting plane canopy (1) and concave curvature canopy; Described concave curvature canopy has three layer construction, upper strata is concave curvature canopy transparent outer layer face (7), middle level is heat-sink shell (15), heat-sink shell (15) is provided with air-vent, orlop is curved surface canopy bottom (13), curved surface canopy bottom (13) seals with the outward flange of concave curvature canopy transparent outer layer face (7) periphery, forms cavity.
2. through street underground passage natural ventilation building structure under according to claim 1, it is characterized in that: institute tells on concave curvature canopy transparent outer layer face (7) and chimney of bleeding (6) is housed, chimney (6) bottom air inlet port of bleeding is communicated with concave curvature canopy mezzanine space, bleed chimney (6) tube wall and concave curvature canopy transparent outer layer face (7) seals, and the upper port of induced ventilation pipe (12) is communicated with concave curvature canopy central authorities mezzanine spaces.
3. through street underground passage natural ventilation building structure under according to claim 2, it is characterized in that: induced ventilation pipe (12) upper port is positioned at the center lowest part of concave curvature canopy bottom (13) inner side, tube wall and curved surface canopy bottom (13) seal, the other end of induced ventilation pipe (12) is to downward-extension, two-way is divided into enter into down through street underground passage (4) entrance, two lower port close to the lower ground through street underground passage (4), and extend one section in passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110301217.2A CN102383519B (en) | 2011-10-09 | 2011-10-09 | Natural ventilation building structure for underground passage of street |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110301217.2A CN102383519B (en) | 2011-10-09 | 2011-10-09 | Natural ventilation building structure for underground passage of street |
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| Publication Number | Publication Date |
|---|---|
| CN102383519A CN102383519A (en) | 2012-03-21 |
| CN102383519B true CN102383519B (en) | 2015-04-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110301217.2A Expired - Fee Related CN102383519B (en) | 2011-10-09 | 2011-10-09 | Natural ventilation building structure for underground passage of street |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004183344A (en) * | 2002-12-04 | 2004-07-02 | Hokkaido Railway Co | Hollow underground structure for burying |
| CN201148586Y (en) * | 2008-01-03 | 2008-11-12 | 黄子铭 | Underground pavement of split stream type wind guide |
| CN100570058C (en) * | 2007-05-10 | 2009-12-16 | 方兴 | The asymmetrical type underground passage of bootable natural wind convection current |
| CN202416659U (en) * | 2011-10-09 | 2012-09-05 | 昆明理工大学 | Building structure for natural ventilation of underpass underground passage |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101638899A (en) * | 2009-08-16 | 2010-02-03 | 屈社文 | Underground passage |
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2011
- 2011-10-09 CN CN201110301217.2A patent/CN102383519B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004183344A (en) * | 2002-12-04 | 2004-07-02 | Hokkaido Railway Co | Hollow underground structure for burying |
| CN100570058C (en) * | 2007-05-10 | 2009-12-16 | 方兴 | The asymmetrical type underground passage of bootable natural wind convection current |
| CN201148586Y (en) * | 2008-01-03 | 2008-11-12 | 黄子铭 | Underground pavement of split stream type wind guide |
| CN202416659U (en) * | 2011-10-09 | 2012-09-05 | 昆明理工大学 | Building structure for natural ventilation of underpass underground passage |
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| CN102383519A (en) | 2012-03-21 |
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Effective date of registration: 20170705 Address after: 650093 Ring Road in Yunnan city of Kunming province No. 50 Kunming University of Science and Technology Xinying Campus Patentee after: INDUSTRY MANAGEMENT LTD KUNMING University OF SCIENCE AND TECHNOLOGY Address before: 650093 Kunming, Yunnan, Wuhua District Road, No. 253 Patentee before: Kunming University of Science and Technology |
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