CN108708504A - The buried structure of roofing smoke-discharge skylight and roofing smoke-discharge skylight - Google Patents

The buried structure of roofing smoke-discharge skylight and roofing smoke-discharge skylight Download PDF

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Publication number
CN108708504A
CN108708504A CN201810736234.0A CN201810736234A CN108708504A CN 108708504 A CN108708504 A CN 108708504A CN 201810736234 A CN201810736234 A CN 201810736234A CN 108708504 A CN108708504 A CN 108708504A
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CN
China
Prior art keywords
smoke
roofing
skylight
discharge
tempered glass
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.)
Granted
Application number
CN201810736234.0A
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Chinese (zh)
Other versions
CN108708504B (en
Inventor
武鹏飞
李俊
付敏
汪雅莲
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.)
China Railway Siyuan Survey and Design Group Co Ltd
Southwest Survey and Design Co Ltd of China Railway Siyuan Survey and Design Group Co Ltd
Original Assignee
China Railway Siyuan Survey and Design Group Co Ltd
Southwest Survey and Design Co Ltd of China Railway Siyuan Survey and Design Group 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.)
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Priority to CN201810736234.0A priority Critical patent/CN108708504B/en
Publication of CN108708504A publication Critical patent/CN108708504A/en
Application granted granted Critical
Publication of CN108708504B publication Critical patent/CN108708504B/en
Active legal-status Critical Current
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Classifications

    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04DROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D13/00Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
    • E04D13/03Sky-lights; Domes; Ventilating sky-lights
    • E04D13/0325Sky-lights; Domes; Ventilating sky-lights provided with ventilating means
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04DROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D13/00Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
    • E04D13/04Roof drainage; Drainage fittings in flat roofs, balconies or the like
    • E04D13/0404Drainage on the roof surface
    • 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
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00Adapting or protecting infrastructure or their operation
    • Y02A30/24Structural elements or technologies for improving thermal insulation
    • Y02A30/254Roof garden systems; Roof coverings with high solar reflectance
    • 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
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B80/00Architectural or constructional elements improving the thermal performance of buildings
    • Y02B80/32Roof garden systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Special Wing (AREA)
  • Building Environments (AREA)

Abstract

The present invention provides a kind of roofing smoke-discharge skylights, the blind of metal of tempered glass, smoke evacuation steel grating and smoke evacuation including daylighting, the smoke evacuation steel grating is embedded in the tempered glass surrounding, the roofing smoke-discharge skylight further includes several columns for supporting the tempered glass edge, and the blind of metal is equipped between adjacent two columns.The present invention also provides a kind of buried structures of roofing smoke-discharge skylight, including armored concrete parapet pedestal, above-mentioned roofing smoke-discharge skylight, the roofing smoke-discharge skylight is located on the armored concrete parapet pedestal, the blind of metal, which wraps around, is provided with Reinforced Concrete Retaining Walls, and gutter is formed between the Reinforced Concrete Retaining Walls and the blind of metal, it is the smoke evacuation steel grating right over the gutter.

Description

The buried structure of roofing smoke-discharge skylight and roofing smoke-discharge skylight
Technical field
The present invention relates to building field more particularly to the buried knots of a kind of roofing smoke-discharge skylight and roofing smoke-discharge skylight Structure.
Background technology
There are mainly three types of forms for existing roofing smoke evacuation roof light:The first is the high skylight of roofing, and design concept is logical Blinds is opened at the four sides for crossing the skylight for being higher by roofing, is discharged fume, top light, and the landscape and the stream of people to roofing can have an impact.
Second is roofing flat skylight, and skylight protrudes roofing, usually closes slightly, is used as aperture.When generation fire When needing smoke evacuation, electric opening, as smoke outlet.But such skylight is only capable of being arranged on not accessible roof.
The third is roofing opening skylight, is not closed, and can also serve as aperture and smoke outlet, and when fire need not act, but Sleety weather can float rain, only be useful in limited occasion.
Existing roofing skylight be primarily present of both contradiction, predominantly can the accessible roof stream of people and skylight to the stream of people and Contradiction between the obstruction of landscape.When roofing is to have the accessible roof of roof planting soil layer (such as subway upper cover Estate Development When), it discharges fume according to high skylight side, then skylight needs the firebreak certain with other construction bonds of roofing, while day Window protrudes ground, just needs to avoid a day window position when designing flow space, just have to the design of the building, landscape of upper cover Certain limitation.When flat skylight electronic using roofing, then there is some potential safety problems, such as in smoke evacuation, power sunroof It opens, the people of roofing has the risk fallen, while power sunroof needs to install window opener, and cost is higher.
Invention content
It is an object of the invention to overcome the defect of the prior art, a kind of roofing smoke-discharge skylight and roofing smoke evacuation day are provided The buried structure of window is suitable for subway, parking lot upper cover Estate Development band earth covered roof skylight, and band covers on China Democratic National Construction Association's scaoffold Earth house face skylight.
The invention is realized in this way:
The present invention provides a kind of roofing smoke-discharge skylight, including the tempered glass of daylighting, smoke evacuation steel grating and smoke evacuation Blind of metal, the smoke evacuation steel grating are embedded in the tempered glass surrounding, and the roofing smoke-discharge skylight further includes described in support Several columns at tempered glass edge are equipped with the blind of metal between adjacent two columns.
Preferably, the tempered glass is equipped with protection steel grating, the column extends the tempered glass support The protection steel grating.
Preferably, the tempered glass intermediate region is equipped with the column of supporting role.
Preferably, the small lattice window that the tempered glass, which includes several, to be stitched together, the small lattice window and the steel Change glass to be generally aligned in the same plane, each small lattice window is embedded in the smoke evacuation steel grating.
The present invention also provides a kind of buried structure of roofing smoke-discharge skylight, including armored concrete parapet pedestal, on The roofing smoke-discharge skylight stated, the roofing smoke-discharge skylight are located on the armored concrete parapet pedestal, the blind of metal It wraps around and is provided with Reinforced Concrete Retaining Walls, and be formed between the Reinforced Concrete Retaining Walls and the blind of metal Gutter, the gutter surface is the smoke evacuation steel grating.
Preferably, the armored concrete parapet pedestal includes from top to bottom concrete water-proof layer, lime mortar successively Separation layer, the double-deck polyvinyl chloride sheet waterproof layer, cement mortar screeding layer, cement haydite sloping layer, cast-in-situ steel reinforced concrete room Panel layer.
Preferably, the Reinforced Concrete Retaining Walls are embedded in roof planting soil.
Preferably, the drainpipe being connected with the gutter is placed along roof slope making direction.
Preferably, being equipped with metal in the drainpipe keeps off stone net.
The invention has the advantages that:
1, the present invention can obviously improve landscape effect on original subway upper cover or scaoffold, and the stream of people is facilitated to walk, can Substitute the design of original high skylight.
2, the present invention in earthing by the way of solving smoke evacuation, the whole non-bulging ground of skylight, and skylight is pressed from both sides using tempering Glue glass, people can be in walking on skylight.
3, for the present invention while taking into account smoke evacuation, skylight is fixing lighting skylight, does not need to electric opening, does not also need It is permanent to open wide, it can prevent personnel from falling, the rain that floats when raining can be prevented.
4, whole implementation method of the present invention is simple, is connected with the siphon drainage system against rain of roofing, can drain in time Rainwater in ditch.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with Other attached drawings are obtained according to these attached drawings.
Fig. 1 is the vertical view of the buried structure of roofing smoke-discharge skylight provided in an embodiment of the present invention;
Fig. 2 is the a-a sectional views of the buried structure of roofing smoke-discharge skylight provided in an embodiment of the present invention;
Fig. 3 is the b-b sectional views of the buried structure of roofing smoke-discharge skylight provided in an embodiment of the present invention.
In figure:1, tempered glass;2, smoke evacuation steel grating;3, blind of metal;4, column;5, steel grating is protected;6, reinforcing bar Concrete dwarf wall pedestal;7, Reinforced Concrete Retaining Walls;8, gutter;9, metal keeps off stone net;10, steel grating skeleton is protected;11, it arranges Water hole;12, structure secondary beam;13, roof slope making direction.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts all other Embodiment shall fall within the protection scope of the present invention.
Such as Fig. 1-Fig. 3, the embodiment of the present invention one provides a kind of roofing smoke-discharge skylight, including the tempered glass 1 of daylighting, row Cigarette steel grating 2 and the blind of metal of smoke evacuation 3, the smoke evacuation steel grating 2 are embedded in 1 surrounding of the tempered glass, the roofing Smoke-discharge skylight further includes several columns 4 for supporting 1 edge of tempered glass, is all provided between adjacent two columns 4 State blind of metal 3.Traditional roofing opening skylight, is not closed, and can also serve as aperture and smoke outlet, and when fire need not be moved Make, but sleety weather can float rain, only be useful in limited occasion.Traditional roofing flat skylight, skylight protrude roofing, usually close slightly It closes, is used as aperture.When generation fire needs smoke evacuation, electric opening, as smoke outlet.But such skylight is only capable of setting and exists Not on accessible roof, otherwise people has the danger fallen when electric opening skylight.In the present embodiment, the roofing smoke-discharge skylight Top is only used for daylighting, does not need electric opening, also need not permanently open wide, can prevent pedestrian from falling, and can prevent from floaing when raining Rain.The roofing smoke-discharge skylight that the present embodiment proposes walks for pedestrian, does not interfere with roofing landscape and flow space.
Preferably, the tempered glass 1 is equipped with protection steel grating 5,5 middle part of the protection steel grating and edge are uniform It is dispersed with protection steel grating skeleton 10, the column 4 extends the tempered glass 1 and supports the protection steel grating skeleton 10. Protection steel grating 5 can be added on the tempered glass 1 of daylighting to be used for protecting tempered glass 1, can prevent the tempered glass 1 from scratching Or it is damaged, ensure the daylighting degree of tempered glass 1, extends the service life of tempered glass 1.Preferably, in the tempered glass 1 Between region be equipped with supporting role column 4, when the tempered glass 1 of daylighting is larger, in addition to 1 edge of tempered glass be equipped with it is several Outside column 4, the intermediate region of the tempered glass 1 also needs to add some columns 4, for supporting tempered glass 1 so that tempering glass The structure of glass 1 is more stable, can bear more weight, will not be damaged easily.
Preferably, the tempered glass 1 includes the small lattice window (not shown) that several are stitched together, the small lattice window It is generally aligned in the same plane with the tempered glass 1, each small lattice window is embedded in the smoke evacuation steel grating 2.When the tempering glass When glass 1 is larger, the tempered glass 1 can be spliced by several small lattice windows, not only make the structure of the tempered glass 1 more Stablize, and aesthetics can be increased.
Second embodiment of the present invention provides a kind of buried structures of roofing smoke-discharge skylight, including armored concrete parapet pedestal 6, above-mentioned roofing smoke-discharge skylight, the roofing smoke-discharge skylight are located on the armored concrete parapet pedestal 6, ensure roofing row Cigarette skylight is embedded enough to firm.The armored concrete parapet pedestal 6 is used as structure girder, is equipped between the structure girder Structure secondary beam 12.The blind of metal 3, which wraps around, is provided with Reinforced Concrete Retaining Walls 7, and is kept off in the armored concrete It is formed with gutter 8 between wall 7 and the blind of metal 3, is the smoke evacuation steel grating 2 right over the gutter 8.From institute The flue gas for stating the discharge of blind of metal 3 enters in gutter 8, is passing through the smoke evacuation steel grating 2 right over the gutter 8 Discharge.The buried structure for the roofing smoke-discharge skylight that the present embodiment proposes is different from the high skylight structure of traditional roofing, the room For the tempered glass 1 of face smoke-discharge skylight with roofing in same level, the rest part of the roofing smoke-discharge skylight is all located at roofing Hereinafter, forming buried structure.Blind of metal 3 is used to discharge fume in the present embodiment, the tempered glass 1 at top only does daylighting With the blind of metal 3 is located at roofing hereinafter, can not only discharge fume, and pedestrian will not be interfered to walk, and will not limit roofing On building, landscape design, and the high skylight of traditional roofing, the skylight four sides by being higher by roofing is opened blinds, is arranged Cigarette, skylight needs the firebreak certain with other construction bonds of roofing, while skylight protrudes ground, landscape to roofing and The stream of people can have an impact, and be designed with certain limitation to the building of upper cover, landscape.
Preferably, the armored concrete parapet pedestal 6 includes from top to bottom concrete water-proof layer, lime mortar successively Separation layer, the double-deck polyvinyl chloride sheet waterproof layer, cement mortar screeding layer, cement haydite sloping layer, cast-in-situ steel reinforced concrete room Panel layer.The armored concrete parapet pedestal 6 of this structure is relatively more firm, will not collapse easily, while ensure that positioned at reinforcing bar The stability of roofing smoke-discharge skylight on concrete dwarf wall pedestal 6 and safety.Preferably, the Reinforced Concrete Retaining Walls 7 It is embedded in roof planting soil, is the earth-retaining of entire buried smoke-discharge skylight while ensureing 7 stability of Reinforced Concrete Retaining Walls.
Preferably, the drainpipe being connected with the gutter 8 is placed along roof slope making direction 13.In the gutter 8 Water can be drained by siphon drainage system against rain vertically downward, also can be by the drainpipe of horizontal direction along slope of roof side To draining.What the osculum 11 in the gutter 8 had a horizontal direction also has a vertical direction, the osculum 11 of horizontal direction with Horizontal drainpipe is connected, and the osculum 11 of vertical direction is connected with siphon drainage system against rain, the bore of the osculum 11 Less than the drain aperture.
Preferably, be equipped with metal gear stone net 9 in the drainpipe, the mesh of the metal gear stone net 9 no more than 1cm × 1cm can prevent larger rubble or dregs from entering and block drainpipe in drainpipe.
Concordant at the top of overburden layer at the top of roofing smoke-discharge skylight, center is roof light, and surrounding is smoke evacuation steel grating.Roofing Smoke-discharge skylight arranges that entire skylight is all embedded in underground using " returning " character form structure.An interior circle is aperture, and bottom is a circle Highly it is 0.6 meter of armored concrete parapet pedestal 6, steel structural roof smoke-discharge skylight is installed on the pedestal.The skylight four Face is out that the smoke outlet of blind of metal 3, top are fixed daylighting tempered glass 1, the skylight top and overburden layer top Portion is concordant.The skylight use toughened rubber-laminated vacuum glass, people can with walk above.If its window ara is excessive, several small lattice can be divided into Window, lower part, as support, ensure whole safety using steel structural upright column.The Reinforced Concrete Retaining Walls 7 of an outermost circle, are buried In roof planting soil, the retaining wall as entire buried smoke-discharge skylight.The armored concrete parapet pedestal 6 and reinforcing bar are mixed It is gutter between solidifying soil barricade 7, is smoke evacuation steel grating 2 at the top of the gutter, ensures the smoke evacuation of skylight.8 internal drainage of gutter Pipe is connected to the siphon drainge system of rain water on roof, can drain rainwater in time when rainy.Flue gas first passes around skylight side Blind of metal 3 drains into gutter 8, then drains into outdoor by the smoke evacuation steel grating 2 at 8 top of gutter.The road entirely discharged fume Diameter is completed in overburden layer, and entire window design is passive type, does not need motor.
Specific embodiment of the present invention:The concrete dwarf wall pedestal for reserving aperture periphery in roofing first, then exists Specialized factory's customized production roofing smoke-discharge skylight, roofing smoke-discharge skylight is installed on the concrete dwarf wall pedestal, then is constructed An outermost circle retaining wall and drainpipe.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention With within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention god.

Claims (9)

1. a kind of roofing smoke-discharge skylight, which is characterized in that the gold of tempered glass, smoke evacuation steel grating and smoke evacuation including daylighting Belong to shutter, the smoke evacuation steel grating is embedded in the tempered glass surrounding, and the roofing smoke-discharge skylight further includes the support steel Change several columns on glass edge edge, the blind of metal is equipped between adjacent two columns.
2. roofing smoke-discharge skylight as described in claim 1, it is characterised in that:The tempered glass is equipped with protection steel grating, The column extends the tempered glass and supports the protection steel grating.
3. roofing smoke-discharge skylight as described in claim 1, it is characterised in that:The tempered glass intermediate region is equipped with support and makees Column.
4. roofing smoke-discharge skylight as described in claim 1, it is characterised in that:The tempered glass includes several splicings one The small lattice window risen, the small lattice window are generally aligned in the same plane with the tempered glass, and each small lattice window is embedded in the smoke evacuation steel In grid.
5. a kind of buried structure of roofing smoke-discharge skylight, it is characterised in that:It is wanted including armored concrete parapet pedestal, such as right 1-4 any one of them roofing smoke-discharge skylights, the roofing smoke-discharge skylight is asked to be located on the armored concrete parapet pedestal, institute It states blind of metal and wraps around and be provided with Reinforced Concrete Retaining Walls, and in the Reinforced Concrete Retaining Walls and the metal louvres It is formed with gutter between window, is the smoke evacuation steel grating right over the gutter.
6. a kind of buried structure of roofing smoke-discharge skylight as claimed in claim 5, it is characterised in that:The armored concrete Parapet pedestal includes from top to bottom concrete water-proof layer, lime mortar separation layer, the double-deck polyvinyl chloride sheet waterproof layer, water successively Cement mortar screed-coat, cement haydite sloping layer, cast-in-situ steel reinforced concrete roof boarding layer.
7. a kind of buried structure of roofing smoke-discharge skylight as claimed in claim 5, it is characterised in that:The armored concrete Barricade is embedded in roof planting soil.
8. a kind of buried structure of roofing smoke-discharge skylight as claimed in claim 5, it is characterised in that:With the gutter phase Drainpipe even is placed along roof slope making direction.
9. a kind of buried structure of roofing smoke-discharge skylight as claimed in claim 8, it is characterised in that:It is set in the drainpipe There is metal to keep off stone net.
CN201810736234.0A 2018-07-06 2018-07-06 Roof smoke-discharging skylight and buried structure thereof Active CN108708504B (en)

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CN108708504B CN108708504B (en) 2024-04-02

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112746712A (en) * 2020-12-31 2021-05-04 清华大学 Special-shaped curve skylight
CN113232767A (en) * 2021-06-22 2021-08-10 中船黄埔文冲船舶有限公司 Outer walkway of ship and ship

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Publication number Priority date Publication date Assignee Title
US4833838A (en) * 1985-10-22 1989-05-30 James Van Dame Energy-efficient skylight structure
JP2005320705A (en) * 2004-05-06 2005-11-17 Sekisui Chem Co Ltd Natural lighting member and its installation structure
CN201426012Y (en) * 2009-04-22 2010-03-17 广东省电力设计研究院 Combined type fixing window used for transformer substation
KR20100064030A (en) * 2008-12-04 2010-06-14 (주) 종합건축사사무소 동일건축 Drainage canal structure of parking garage
CN203905248U (en) * 2014-05-27 2014-10-29 深圳市东方风光新能源技术有限公司 Light guiding structure for flat panel lighting
CN104481086A (en) * 2014-11-26 2015-04-01 华东建筑设计研究院有限公司 Efficient silent air duct well structure for roof
JP5945032B1 (en) * 2015-05-07 2016-07-05 本間 悦子 Skylight improvement method
CN106812265A (en) * 2017-03-24 2017-06-09 镇江市建设工程抗震和安全鉴定办公室 A kind of femerell constructs treating seepage structure and construction method
CN207245098U (en) * 2017-08-31 2018-04-17 江苏远瀚建筑设计有限公司 A kind of basement lighting ventilation shaft
CN208668795U (en) * 2018-07-06 2019-03-29 中铁第四勘察设计院集团有限公司 The buried structure of roofing smoke-discharge skylight and roofing smoke-discharge skylight

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4833838A (en) * 1985-10-22 1989-05-30 James Van Dame Energy-efficient skylight structure
JP2005320705A (en) * 2004-05-06 2005-11-17 Sekisui Chem Co Ltd Natural lighting member and its installation structure
KR20100064030A (en) * 2008-12-04 2010-06-14 (주) 종합건축사사무소 동일건축 Drainage canal structure of parking garage
CN201426012Y (en) * 2009-04-22 2010-03-17 广东省电力设计研究院 Combined type fixing window used for transformer substation
CN203905248U (en) * 2014-05-27 2014-10-29 深圳市东方风光新能源技术有限公司 Light guiding structure for flat panel lighting
CN104481086A (en) * 2014-11-26 2015-04-01 华东建筑设计研究院有限公司 Efficient silent air duct well structure for roof
JP5945032B1 (en) * 2015-05-07 2016-07-05 本間 悦子 Skylight improvement method
CN106812265A (en) * 2017-03-24 2017-06-09 镇江市建设工程抗震和安全鉴定办公室 A kind of femerell constructs treating seepage structure and construction method
CN207245098U (en) * 2017-08-31 2018-04-17 江苏远瀚建筑设计有限公司 A kind of basement lighting ventilation shaft
CN208668795U (en) * 2018-07-06 2019-03-29 中铁第四勘察设计院集团有限公司 The buried structure of roofing smoke-discharge skylight and roofing smoke-discharge skylight

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112746712A (en) * 2020-12-31 2021-05-04 清华大学 Special-shaped curve skylight
CN113232767A (en) * 2021-06-22 2021-08-10 中船黄埔文冲船舶有限公司 Outer walkway of ship and ship

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