CN106951609A - A kind of visual building glass curtain wall light reflections affect analysis method - Google Patents
A kind of visual building glass curtain wall light reflections affect analysis method Download PDFInfo
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Abstract
The invention discloses a kind of visual building glass curtain wall light reflections affect analysis method, this method is first to groups of building management threedimensional model；Then glazed facade to be analyzed is chosen in threedimensional model, for the glazed facade chosen respectively to sun altitude and solar azimuth demarcation interval, calculate cause building that glazed facade incident ray is blocked and cause that glazed facade reflection light is blocked potential and block building, afterwards using glazed facade as cut surface cutting its place building calculating building from shield portions；Finally by sunray with incident ray direction projection to glazed facade, and the region that glazed facade is not blocked is with reflection light direction projection to horizontal plane, glazed facade projects the region to be formed and subtracted causes the building blocked to project the actual smooth reflections affect figure that the region to be formed is glazed facade to reflection light.The present invention provides huge booster action to urban planning and building, therefore with actual application value.
Description
Technical field
The present invention relates to Computer Simulation field, more particularly to a kind of visual building glass curtain wall light reflections affect
Analysis method.
Background technology
In recent years, with the construction and development in city, increasing skyscraper is used as the outer of building using glass curtain wall
Body is decorated, and this make it that building is more attractive in appearance, but the problem of also bring a series of new to city to a certain extent, for example light is dirty
Dye, reflection of the glass curtain wall to light may threaten daily life.During building are built, people are usually not
Glass curtain wall is rightly used, the harmful effect of its generation is have ignored.This is due to current in the design process of building, is lacked
The instrument of effective detection reflected light influence, designer can not effectively predict that the reflected light currently built is lived for surrounding
The influence of the Sensitive Buildings such as residence, public utility.
Real-life building profile is often rich and varied, is not only conventional cube structure, asymmetric buildings
Body (as " U " type is constructed) light that can exist between different piece itself is blocked, and there is mutual shadow between adjacent building body
Ring, this just brings problem to the analysis that glass curtain wall light reflects.Some existing reflection optical detection techniques will generally carry glass
The building body Model of glass curtain wall is simplified, and is regarded as by several cubical combinations, is not accounted for the details of whole building,
And it have ignored glazed facade and build the possibility blocked and building in itself with the presence or absence of from the problem of blocking by other.It is existing in addition
Some instrument effect of visualization are undesirable, it is difficult to put into practical application.
The content of the invention
It is special for practical application scene the invention aims to overcome the shortcomings and limitations of above-mentioned prior art
Point there is provided it is a kind of efficiently, easily visual building glass curtain wall light reflections affect analysis method, support processing glass curtain wall
For the situation of curved surface, support processing other buildings to glazed facade to be analyzed block and asymmetric buildings block effect certainly
Should, realization automatically generates glass curtain wall light reflections affect figure.
Realizing the concrete technical scheme of the object of the invention is：
A kind of visual building glass curtain wall light reflections affect analysis method, this method includes step in detail below：
Step 1：Threedimensional model is built to building and road, building and road constitute light reflections affect analysis scene；
Step 2：In light reflective analysis scene, glass of building facade to be analyzed is chosen as analysis object；
Step 3：Annual sun altitude and azimuth demarcation interval are calculated in scene, treated in the annual period
That analyzes that the incident ray and reflection light of glazed facade cause to block all potential blocks building；
Step 4：Calculate building itself and cause the part that the incident ray and reflection light of glazed facade are blocked；
Step 5：Generate the light reflections affect figure for the reflection light formation that certain date sunray is radiated in glazed facade.
The three-dimensional model building contains each orientation glass curtain wall, glass curtain wall point curved surface and non-curved, non-curved
Glass curtain wall facade containing multiple pieces of glass, monoblock non-curved glass curtain wall is alien invasion, and its every piece of glazed facade included is interior vertical
Face；Bend glass curtain wall is made up of one piece of glazed facade, only alien invasion.
The step 2 is specifically included：
1) bend glass curtain wall and non-curved glass curtain wall are distinguished；
2) bend glass curtain wall only need to obtain the apex coordinate of whole alien invasion, reflection coefficient containing only one piece of glazed facade
And normal line vector；
3) normal of the non-curved glass curtain wall alien invasion comprising several interior facades and interior alien invasion is identical, the choosing of glazed facade
It is the normal for first obtaining glass curtain wall alien invasion to take, and then obtains the interior facade apex coordinate and corresponding reflection coefficient chosen.
By annual sun altitude demarcation interval described in step 3, calculate in scene, to glass to be analyzed in the annual period
Glass facade incident ray cause to block it is all it is potential block building, specifically include：
1) n deciles are carried out to sun altitude h, forms n parts of intervals；Wherein, 0 °≤h≤90 °, n=9；
2) n parts of traversal sun altitude are interval, if current altitude of the sun angle range is (h1,h2)；
3) sent respectively from glazed facade projection in the horizontal plane and level ground forms h1Angle and h2The light of angle
Line, is regarded as causing the building that blocks to glazed facade incident ray with the building of this ray intersection, calculates the current sun
All buildings that incident ray is blocked are caused in height angle range and result of calculation is preserved.
By annual solar azimuth demarcation interval described in step 3, calculate in scene, to glass to be analyzed in the annual period
Glass facade reflection light cause to block it is all it is potential block building, specifically include：
1) m deciles are carried out to solar azimuth α, forms m parts of intervals, wherein, -180 °≤α≤180 °, m=30；
2) each piece of glazed facade to be analyzed chosen in building model is traveled through, if current glass facade is S；
3) n parts of traversal solar azimuth are interval, if current solar azimuth interval is (α1,α2), α2=α1+360/m；
4) glazed facade S angle β of the normal N with due south direction is calculated；Judge α1And α2Normal N with glazed facade S is
It is no to be more than 90 degree, it is legal more than 90 degree；If α1And α2It is all illegal, handle next solar azimuth angle range；If α1It is illegal,
α2It is legal, update α1For β+pi/2；If α1It is legal, α2It is illegal, update α2=β-pi/2；
5) set glazed facade S in the horizontal plane be projected as line segment as LAB, α is taken to point A1As incident external boundary, to point B
Take α2It is used as incident external boundary；
6) α known to1If A incident ray vector isEach component computing formula of incident ray vector is such as
Under：
X=sin α, y=-cos α, z=0
Utilize formulaIt is Ra to calculate A point reflections light, using and calculate A point reflection light
Line is same method, calculates the incident ray L of B pointsBIt is Rb with reflection light；
7) calculate in reflection light Ra, Rb interval in it is all build to block build building, preserve each glazed facade
The corresponding building for causing to block to reflection light in different solar azimuth angle ranges.
The step 4 is specifically included：
1) cutting building is removed in itself by the use of glazed facade to be analyzed as cut surface；
2) building is cut into after module, and the building modules not comprising glazed facade are regarded as to incident ray and reflection
Light causes to block；
3) blocked causing the building modules blocked to be added to incident ray glazed facade incident ray in list,
Cause the building modules blocked to be added to reflection light reflection light to block in list.
The step 5 is specifically included：
1) sun altitude on certain date is calculated, according to the different sun calculated in sun altitude obtaining step 3
Height angle range is corresponding to block building, while incident ray blocks the building that blocks preserved in list in obtaining step 4, will
All buildings of blocking got are with incident ray direction projection to glazed facade；
2) it is that incident ray is blocked part to block the region that projects in glazed facade of building, will be incident in glazed facade
The region that light is not blocked is with reflection light direction projection to horizontal plane, if the view field on horizontal plane is pa；
3) solar azimuth on certain date is calculated, according to glazed facade and solar azimuth, pair preserved in step 3 is taken out
Glazed facade reflection light causes the buildings blocked, while reflection light blocks the screening preserved in list in obtaining step 4
Building is kept off, building is blocked by what is got with reflection light direction projection to horizontal plane, if the view field on ground
For pb；
4) calculated using difference operation, then light reflection actual influence region is p=pa-pb, region p is drawn out, is most
Whole glass curtain wall light reflections affect figure.
The present invention is applied to urban planning, and architectural environment protects field, and there is provided glass of building curtain wall light reflections affect point
Analysis.The light back projection that glass of building curtain wall is caused is analyzed by visual glazed facade light reflections affect figure and Impact Report
Ring, be that planning building and environmental protection provide very big help.Operationally also accomplish easy to use, building has been carried out
When environmental protection is assessed, it is only necessary to import the model of the impacted building of building and periphery, therefore the present invention should with actual
With value.
Brief description of the drawings
Fig. 1 is the schematic diagram of the BUILDINGS MODELS glazed facade to be analyzed of the present invention；
Fig. 2 is the schematic diagram of the light reflections affect figure generation of the glass curtain wall of the present invention.
Embodiment
The present invention is described in further detail with example below in conjunction with the accompanying drawings：
The present invention is applied in urban planning and environmental protection analyze the reflection of City Building glass curtain wall light, examines
The various aspects that building glass curtain wall light reflects in city are considered：Blocked including incident ray by building, reflection light is built
Build that thing is blocked and asymmetric buildings bodies is blocked certainly.Glazed facade light reflections affect map generalization calculate block glass stand
The incident ray in face and the building of reflection light, also calculate the building for causing incident ray and reflection light to be blocked certainly
Body part, the light reflections affect figure ultimately produced to have cut cause the incident ray and reflection light of glazed facade to be analyzed and hidden
The view field of the building of gear in the horizontal plane, generates actual light reflections affect figure.
Implementation process of the present invention includes three key steps：Building model to be analyzed is built, to be analyzed build is chosen
Thing glazed facade is built, the light reflections affect figure of glazed facade is generated.
Step one：Build building model to be analyzed
Three-dimensional model building needs to build each orientation glass curtain wall, glass curtain wall point curved surface and non-curved, non-curved
Glass curtain wall facade containing multiple pieces of glass, monoblock non-curved glass curtain wall is alien invasion, and its every piece of glazed facade included is interior vertical
Face；Bend glass curtain wall is made up of one piece of glazed facade, only alien invasion.
Step 2：Choose glass of building facade to be analyzed
It is the process for obtaining the glazed facade data chosen to choose object to be analyzed, and data are built where glazed facade
Thing model, includes the normal line vector of the apex coordinate of glazed facade, reflection coefficient and glazed facade.Bend glass curtain wall is only wrapped
Containing one piece of glazed facade, the selection of bend glass curtain wall only need to obtain the apex coordinate of whole alien invasion, reflection coefficient and normal
Vector.Normal of the non-curved glass curtain wall alien invasion comprising multiple interior facades and interior alien invasion is identical, the selection of glazed facade
Journey should first obtain the normal of glass curtain wall alien invasion, then obtain the interior facade apex coordinate and corresponding reflection coefficient chosen,
Fig. 1 shows that the place that non-curved glass curtain wall chooses in the schematic diagram of glazed facade, figure where circle is glazed facade.
Step 3：Generate glazed facade light reflections affect figure
In the present invention reflections affect map generalization of glazed facade light calculate to the incident ray of glazed facade to be analyzed and
Reflection light causes the view field of the building that blocks in the horizontal plane, and blocking building includes building where glazed facade
Itself cut out to incident ray and the building modules of reflection light, calculate actual glass curtain wall light using difference operation anti-
Projection rings figure.
Glazed facade light reflections affect map generalization of the present invention mainly includes three phases：
First stage:Annual solar azimuth and elevation angle splitting is interval, calculate in scene, it is right in the annual time
What glazed facade incident ray to be analyzed and reflection light caused to block all potential blocks building
Calculate the potential building of blocking of cause to block to glazed facade incident ray to be analyzed in the annual period all
Process comprises the following steps：
1) n deciles are carried out to sun altitude h, forms n parts of intervals；Wherein, 0 °≤h≤90 °, n=9；
2) n parts of traversal sun altitude are interval, if current altitude of the sun angle range is (h1,h2)；
3) sent respectively from glazed facade projection in the horizontal plane and level ground forms h1Angle and h2The light of angle
Line, is regarded as causing the building that blocks to glazed facade incident ray with the building of this ray intersection, calculates the current sun
All buildings that incident ray is blocked are caused in height angle range and result of calculation is preserved.
Calculate the potential building of blocking of cause to block to glazed facade reflection light to be analyzed in the annual period all
Process comprises the following steps：
1) m deciles are carried out to solar azimuth α, forms m parts of intervals, wherein, -180 °≤α≤180 °, m=30；；
2) each piece of glazed facade to be analyzed chosen in building model is traveled through, if current glass facade is S；
3) n parts of traversal solar azimuth are interval, if current solar azimuth interval is (α1,α2), α2=α1+360/m；
4) glazed facade S angle β of the normal N with due south direction is calculated；Judge α1And α2Normal N with glazed facade S is
It is no to be more than 90 degree, it is legal more than 90 degree；If α1And α2It is all illegal, handle next solar azimuth angle range；If α1It is illegal,
α2It is legal, update α1For β+pi/2；If α1It is legal, α2It is illegal, update α2=β-pi/2；
5) set glazed facade S in the horizontal plane be projected as line segment as LAB, α is taken to point A1As incident external boundary, to point B
Take α2It is used as incident external boundary；
6) α known to1If A incident ray vector isEach component computing formula of incident ray vector is such as
Under：
X=sin α, y=-cos α, z=0
Utilize formulaIt is Ra to calculate A point reflections light, using and calculate A point reflection light
Line is same method, calculates the incident ray L of B pointsBIt is Rb with reflection light；
7) calculate in reflection light Ra, Rb interval in it is all build to block build building, preserve each glazed facade
The corresponding building for causing to block to reflection light in different solar azimuth angle ranges.
Second stage:Calculate building itself and cause the part that the incident ray and reflection light of glazed facade are blocked
The part that calculating building itself causes the incident ray and reflection light of glazed facade to be blocked in system includes
Following steps
1) cutting building is removed in itself by the use of glazed facade to be analyzed as cut surface；
2) building is cut into after module, and the building modules not comprising glazed facade are regarded as to incident ray and reflection
Light causes to block；
3) blocked causing the building modules blocked to be added to incident ray glazed facade incident ray in list,
Cause the building modules blocked to be added to reflection light reflection light to block in list.
Phase III：Generate the reflections affect figure that certain date sunray is radiated at reflection light formation in glazed facade
(1) sun altitude on certain date is calculated, if h is sun altitude, computing formula is as follows：
Sinh=sin β sin θ+cos β cos θ cos (15t+ λ -300)
β represents geographic latitude, and θ represents sun declination, and λ represents geographic logitude.First stage is obtained according to sun altitude
In the different altitude of the sun angle ranges that calculate are corresponding blocks building, while obtaining incident ray in second stage blocks row
What is preserved in table blocks building, by all buildings of blocking got with incident ray direction projection to glazed facade；
(2) it is that incident ray is blocked part to block the region that projects in glazed facade of building, will be entered in glazed facade
Region that light is not blocked is penetrated with reflection light direction projection to horizontal plane, if the view field on horizontal plane is pa；
(3) solar azimuth on certain date is calculated, if α is solar azimuth, computing formula is as follows：
T represents the time, and according to glazed facade and solar azimuth, what is preserved in the taking-up first stage reflects glazed facade
Light causes the buildings blocked, while obtaining second stage reflection light blocks the building that blocks preserved in list, will
What is got blocks building with reflection light direction projection to horizontal plane, if the view field on ground is pb；
(4) calculated using difference operation, then light reflection actual influence region is p=pa-pb, region p is drawn out, in Fig. 2
Place where circle is final glass curtain wall light reflections affect figure.
Claims (7)
1. a kind of visual building glass curtain wall light reflections affect analysis method, it is characterised in that this method includes following tool
Body step：
Step 1：Threedimensional model is built to building and road, building and road constitute light reflections affect analysis scene；
Step 2：In light reflective analysis scene, glass of building facade to be analyzed is chosen as analysis object；
Step 3：Annual sun altitude and azimuth demarcation interval are calculated in scene, to be analyzed in the annual period
What the incident ray and reflection light of glazed facade caused to block all potential blocks building；
Step 4：Calculate building itself and cause the part that the incident ray and reflection light of glazed facade are blocked；
Step 5：Generate the light reflections affect figure for the reflection light formation that certain date sunray is radiated in glazed facade.
2. visual building glass curtain wall light reflections affect analysis method according to claim 1, it is characterised in that：Institute
State three-dimensional model building and contain each orientation glass curtain wall, glass curtain wall point curved surface and non-curved, non-curved glass curtain wall contain
Multiple pieces of glass facade, monoblock non-curved glass curtain wall is alien invasion, and its every piece of glazed facade included is interior facade；Bend glass
Curtain wall is made up of one piece of glazed facade, only alien invasion.
3. visual building glass curtain wall light reflections affect analysis method according to claim 1, it is characterised in that：Institute
Step 2 is stated to specifically include：
1) bend glass curtain wall and non-curved glass curtain wall are distinguished；
2) bend glass curtain wall only need to obtain the apex coordinate of whole alien invasion, reflection coefficient and method containing only one piece of glazed facade
Line vector；
3) normal of the non-curved glass curtain wall alien invasion comprising several interior facades and interior alien invasion is identical, and the selection of glazed facade is
The normal of glass curtain wall alien invasion is first obtained, the interior facade apex coordinate and corresponding reflection coefficient chosen then is obtained.
4. visual building glass curtain wall light reflections affect analysis method according to claim 1, it is characterised in that：Step
By annual sun altitude demarcation interval described in rapid 3, calculate in scene, it is incident to glazed facade to be analyzed in the annual period
Light cause to block it is all it is potential block building, specifically include：
1) n deciles are carried out to sun altitude h, forms n parts of intervals, wherein, 0 °≤h≤90 °, n=9；
2) n parts of traversal sun altitude are interval, if current altitude of the sun angle range is (h1,h2)；
3) sent respectively from glazed facade projection in the horizontal plane and level ground forms h1Angle and h2The light of angle,
It is regarded as causing the building that blocks to glazed facade incident ray with the building of this ray intersection, calculates current altitude of the sun
All buildings that incident ray is blocked are caused in angle range and result of calculation is preserved.
5. visual building glass curtain wall light reflections affect analysis method according to claim 1, it is characterised in that：Step
By annual solar azimuth demarcation interval described in rapid 3, calculate in scene, glazed facade to be analyzed is reflected in the annual period
Light cause to block it is all it is potential block building, specifically include：
1) m deciles are carried out to solar azimuth α, forms m parts of intervals, wherein, -180 °≤α≤180 °, m=30；
2) each piece of glazed facade to be analyzed chosen in building model is traveled through, if current glass facade is S；
3) m parts of traversal solar azimuth are interval, if current solar azimuth interval is (α1,α2), α2=α2+360/m；
4) glazed facade S angle β of the normal N with due south direction is calculated；Judge α1And α2Whether the normal N with glazed facade S is big
It is legal more than 90 degree in 90 degree；If α1And α2It is all illegal, handle next solar azimuth angle range；If α2It is illegal, α2Close
Method, updates α1For β+pi/2；If α1It is legal, α2It is illegal, update α2=β-pi/2；
5) set glazed facade S in the horizontal plane be projected as line segment as LAB, α is taken to point A1As incident external boundary, α is taken to point B2
It is used as incident external boundary；
6) α known to1If A incident ray vector isEach component computing formula of incident ray vector is as follows：
X=sin α, y=-cos α, z=0
Utilize formulaIt is Ra to calculate A point reflections light, use and calculate A point reflections light for
Same method, calculates the incident ray L of B pointsBIt is Rb with reflection light；
7) calculate in reflection light Ra, Rb interval in it is all build to block build building, preserve each glazed facade difference
Solar azimuth angle range in the corresponding building for causing to block to reflection light.
6. visual building glass curtain wall light reflections affect analysis method according to claim 1, it is characterised in that：Institute
Step 4 is stated to specifically include：
1) cutting building is removed in itself by the use of glazed facade to be analyzed as cut surface；
2) building is cut into after module, and the building modules not comprising glazed facade are regarded as to incident ray and reflection light
Cause to block；
3) blocked causing the building modules blocked to be added to incident ray glazed facade incident ray in list, to anti-
Penetrate light and cause the building modules blocked to be added to reflection light and block in list.
7. visual building glass curtain wall light reflections affect analysis method according to claim 1, it is characterised in that：Institute
Step 5 is stated to specifically include：
1) sun altitude on certain date is calculated, according to the different altitude of the suns calculated in sun altitude obtaining step 3
Angle range is corresponding to block building, at the same in obtaining step 4 incident ray block preserved in list block building, will obtain
To it is all block building with incident ray direction projection to glazed facade；
2) it is that incident ray is blocked part to block the region that projects in glazed facade of building, by incident ray in glazed facade
The region not being blocked is with reflection light direction projection to horizontal plane, if the view field on horizontal plane is pa；
3) calculate the solar azimuth on certain date, according to glazed facade and solar azimuth, take out preserved in step 3 to glass
Facade reflection light causes the buildings blocked, while reflection light is blocked blocking of being preserved in list and built in obtaining step 4
Thing is built, building is blocked by what is got with reflection light direction projection to horizontal plane, if the view field on ground is pb；
4) calculated using difference operation, then light reflection actual influence region is p=pa-pb, region p is drawn out, it is as final
Glass curtain wall light reflections affect figure.
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| CN112001023A (en) * | 2020-08-28 | 2020-11-27 | 上海应用技术大学 | Method for analyzing light reflection pollution safety degree of glass curtain wall |
| CN114440836A (en) * | 2022-01-19 | 2022-05-06 | 南京市测绘勘察研究院股份有限公司 | Unmanned aerial vehicle photogrammetry modeling method with glass curtain wall building |
| CN115081078A (en) * | 2022-07-01 | 2022-09-20 | 中海环境科技(上海）股份有限公司 | Method for drawing light pollution thermodynamic diagram of glass curtain wall of urban building |
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| US20090110866A1 (en) * | 2007-10-30 | 2009-04-30 | Glass Xxi, S.A. | Structural glass system |
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Cited By (4)
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| CN112001023A (en) * | 2020-08-28 | 2020-11-27 | 上海应用技术大学 | Method for analyzing light reflection pollution safety degree of glass curtain wall |
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| CN106951609B (en) | 2020-05-12 |
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