CN106013571B - Light-steel roofing and photovoltaic module support compound increase bearing capacity method and structural system - Google Patents
Light-steel roofing and photovoltaic module support compound increase bearing capacity method and structural system Download PDFInfo
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- CN106013571B CN106013571B CN201610569310.4A CN201610569310A CN106013571B CN 106013571 B CN106013571 B CN 106013571B CN 201610569310 A CN201610569310 A CN 201610569310A CN 106013571 B CN106013571 B CN 106013571B
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 123
- 239000010959 steel Substances 0.000 title claims abstract description 123
- 150000001875 compounds Chemical class 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims abstract description 18
- 239000002131 composite material Substances 0.000 claims abstract description 31
- 238000010276 construction Methods 0.000 claims abstract description 25
- 239000000463 material Substances 0.000 claims abstract description 17
- 238000012916 structural analysis Methods 0.000 claims description 15
- 239000000203 mixture Substances 0.000 claims description 3
- 235000006508 Nelumbo nucifera Nutrition 0.000 claims 1
- 240000002853 Nelumbo nucifera Species 0.000 claims 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 4
- 239000002184 metal Substances 0.000 abstract description 2
- 239000007787 solid Substances 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B7/00—Roofs; Roof construction with regard to insulation
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S20/00—Supporting structures for PV modules
- H02S20/20—Supporting structures directly fixed to an immovable object
- H02S20/22—Supporting structures directly fixed to an immovable object specially adapted for buildings
- H02S20/23—Supporting structures directly fixed to an immovable object specially adapted for buildings specially adapted for roof structures
- H02S20/24—Supporting structures directly fixed to an immovable object specially adapted for buildings specially adapted for roof structures specially adapted for flat roofs
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/10—Photovoltaic [PV]
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Roof Covering Using Slabs Or Stiff Sheets (AREA)
Abstract
The present invention relates to photovoltaic solar cloths on Lightweight metal plant to set technology, and specifically light-steel roofing and photovoltaic module support compound increase bearing capacity method and structural system.The following steps are included: (1) calculates separately the bearing capacity of the column of existing light-steel roofing support construction, crossbeam and purlin；(2) bearing capacity of guide rail in existing photovoltaic module support construction, auxiliary girder and support is calculated separately；(3) load of existing light-steel roofing and photovoltaic component system application is calculated separately；(4) load that existing light-steel roofing and photovoltaic module apply jointly is calculated；(5) photovoltaic light-steel roofing composite supporting structure will be constituted above the guide rail and the corresponding purlin and crossbeam for being fixed on existing light-steel roofing support construction of auxiliary girder in photovoltaic module support construction；(6) according to the calculated result of above-mentioned (1), (2), (3), (4), connection type and guide rail, auxiliary girder and its support geometric dimension in (5) between guide rail and purlin, auxiliary girder and crossbeam is determined, uses material.
Description
Technical field
The present invention relates to photovoltaic solar cloths on Lightweight metal plant to set technology, specifically light-steel roofing and photovoltaic module branch
Support compound increase bearing capacity method and structural system.
Background technique
Solar energy power generating is existing because it has many advantages, such as cleaning, safe and convenient, efficient, renewable, sustainable development
The new industry for having become countries in the world common concern and giving priority to.Solar cell module (photovoltaic battery plate) is as power generation system
The important component of system needs to be arranged to suitable place and absorbs solar energy.The roof of industrial premises because area greatly and more
It is flat, it is the place of ideal placement photovoltaic battery plate, the construction suitable for roof photovoltaic power generation project.
Currently, existing building roof photovoltaic, based on light Steel-Structure Factory with Steel roofing, there is no consider photovoltaic in original structure design
The load of component and support system, therefore, light steel (workshop) roofing needs to carry out existing building structure increase load carrying mostly
The reinforcing or transformation of ability.To steel worm-gearing part carry out structural strengthening technology can there are many, such as section-increased method, steel bonding
Method, increase supporting methods etc., but these reinforcement means are affected to the production activity in workshop, and the duration of strengthening construction
It is longer, increase cost of manufacture.
Therefore, the laying of photovoltaic solar is reinforced without original structure in light Steel-Structure Factory with Steel, can be constructed outside workshop, not shadow
It rings in workshop and works normally, become the target of art technology research and development.
Summary of the invention
Increase existing light-steel roofing bearing capacity the object of the present invention is to provide a kind of, is wanted to meet its photovoltaic laying load
The light-steel roofing and photovoltaic module asked support compound increase bearing capacity method and structural system.
To achieve the above object, the present invention uses following technical scheme, and light-steel roofing and photovoltaic module support compound increasing
Large bearing capacity method, comprising the following steps:
Calculate separately the column of existing light-steel roofing support construction, the bearing capacity of crossbeam and purlin；
(2) bearing capacity of guide rail in existing photovoltaic module support construction, auxiliary girder and support is calculated separately；
(3) load of existing light-steel roofing and photovoltaic component system application is calculated separately；
(4) load that existing light-steel roofing and photovoltaic module apply jointly is calculated；
(5) by the guide rail and the corresponding purlin for being fixed on existing light-steel roofing support construction of auxiliary girder in photovoltaic module support construction
Photovoltaic light-steel roofing composite supporting structure is constituted above item and crossbeam；
(6) according to the calculated result of above-mentioned (1), (2), (3), (4), determine in (5) guide rail and purlin, auxiliary girder and crossbeam it
Between connection type and guide rail, auxiliary girder and its support geometric dimension, use material.
Guide rail, auxiliary girder are separately fixed on the purlin and crossbeam of existing light-steel roofing in photovoltaic module, and support is fixed on
Between guide rail and purlin, auxiliary girder and crossbeam, light-steel roofing bearing capacity is improved by the way that the position of support is arranged.Meanwhile making existing
Light-steel roofing structure and the bearing capacity of photovoltaic module support system forming composite structure can carry light-steel roofing and photovoltaic group
The load that part applies jointly.The support system that guide rail, auxiliary girder form in photovoltaic module can individually carry photovoltaic module, then photovoltaic
The auxiliary girder of component is fixed on the crossbeam of existing light-steel roofing, and guide rail is fixed on auxiliary girder, support be fixed on auxiliary girder and crossbeam it
Between, crossbeam bearing capacity is improved by the way that the position of support is arranged.
The crossbeam bearing capacity of existing light-steel roofing structure can satisfy photovoltaic module setting, then guide rail is fixed in photovoltaic module
On the purlin of existing light-steel roofing, support is fixed between guide rail and purlin, improves purlin by the way that the position of support is arranged
Bearing capacity.
Purlin is not enough to carry photovoltaic module load, but when material property is but also with certain bearing capacity, then purlin with lead
N number of hold-down support is set between rail and constitutes the compound purlin of photovoltaic light-steel roofing, and the number of N and position are by structural analysis and computation software
PK-PM is determined；
As N=2, the distance of support to purlin end fixed pivot is a,
q1For original structure roofing dead load, q2For the combination of the loads such as photovoltaic module load and roofing work, wind, snow, L is the span of purlin；
As N=4, two supports are located at the end of purlin, and the distance of other two support to purlin end is a,L is the span of purlin.
Crossbeam is not enough to carry photovoltaic module load, but when material property is but also with certain bearing capacity, then crossbeam and secondary
N number of hold-down support is set between beam and constitutes photovoltaic light-steel roofing composite transverse beam, and the number of N and position are by structural analysis and computation software
PK-PM is determined；
As N=2, the distance of support to beam-end fixed pivot is a,
q1For original structure roofing dead load, q2For the combination of the loads such as photovoltaic module load and roofing work, wind, snow, L is the span of crossbeam；
As N=4, two supports are located at the end of crossbeam, and the distance of other two support to beam-end is a,L is the span of crossbeam.
The purlin and crossbeam of existing light-steel roofing are not enough to carry photovoltaic module load, then purlin and guide rail, crossbeam and pair
N number of hold-down support is set between beam respectively and constitutes photovoltaic light-steel roofing composite supporting structure, the number of N and position are by structural analysis meter
Software PK-PM is calculated to determine；
As N=2, it is a at a distance from purlin or beam-end fixed pivot that guide rail arrives respectively with the support under auxiliary girder,q1For original structure roofing dead load, q2For photovoltaic module load and roofing work, wind,
The combination of the loads such as snow, L are the span of purlin or crossbeam；
As N=4, two supports under guide rail and auxiliary girder are located at the end of purlin or crossbeam, under guide rail and auxiliary girder
Other two support to arrive the distance of purlin or beam-end respectively be a,L be purlin or crossbeam across
Degree.
The compound structural system for increasing bearing capacity method, photovoltaic module branch are supported using above-mentioned light-steel roofing and photovoltaic module
Guide rail and auxiliary girder correspondence in support are fixed on the purlin and crossbeam of existing light-steel roofing structure, collectively form support photovoltaic module
With the composite construction of light-steel roofing.
1. it is common with photovoltaic module that the crossbeam of existing light-steel roofing and the bearing capacity of purlin can not carry light-steel roofing
The load of application, then the guide rail in photovoltaic module support system and auxiliary girder correspond to the purlin and crossbeam for being fixed on existing light-steel roofing
On, collectively form the composite construction of support photovoltaic module and light-steel roofing；2. when the support of guide rail, auxiliary girder composition in photovoltaic module
System can individually carry photovoltaic module, then the auxiliary girder of photovoltaic module is fixed on the crossbeam of existing light-steel roofing, and guide rail is fixed
On auxiliary girder, support is fixed between auxiliary girder and crossbeam, collectively forms composite transverse beam；3. when the crossbeam of existing light-steel roofing structure
Bearing capacity can satisfy photovoltaic module setting, then guide rail is fixed on the purlin of existing light-steel roofing in photovoltaic module, and support is solid
It is scheduled between guide rail and purlin, collectively forms compound purlin.
The purlin of existing light-steel roofing is not enough to carry photovoltaic module load, but material property is but also with certain bearing capacity
When, then set N number of hold-down support between purlin and guide rail and constitute photovoltaic light-steel roofing composite supporting structure, the number of N and position by
Structural analysis and computation software PK-PM is determined；
As N=2, the distance of support to purlin end fixed pivot is a,
q1For original structure roofing dead load, q2For the combination of the loads such as photovoltaic module load and roofing work, wind, snow, L is the span of purlin；
As N=4, two supports are located at the end of purlin, and the distance of other two support to purlin end is a,L is the span of purlin.
The crossbeam of existing light-steel roofing is not enough to carry photovoltaic module load, but material property is but also with certain bearing capacity
When, then set N number of hold-down support between crossbeam and auxiliary girder and constitute photovoltaic light-steel roofing composite supporting structure, the number of N and position by
Structural analysis and computation software PK-PM is determined；
As N=2, the distance of support to beam-end fixed pivot is a,
q1For original structure roofing dead load, q2For the combination of the loads such as photovoltaic module load and roofing work, wind, snow, L is the span of crossbeam；
As N=4, two supports are located at the end of crossbeam, and the distance of other two support to beam-end is a,L is the span of crossbeam.
The purlin of existing light-steel roofing and crossbeam are not enough to carry photovoltaic module load, then purlin and guide rail, crossbeam with
N number of hold-down support is set between auxiliary girder respectively and constitutes photovoltaic light-steel roofing composite supporting structure, the number of N and position are by structural analysis
Software for calculation PK-PM is determined；
As N=2, it is a at a distance from purlin or beam-end fixed pivot that guide rail arrives respectively with the support under auxiliary girder,q1For original structure roofing dead load, q2For photovoltaic module load and roofing work, wind,
The combination of the loads such as snow, L are the span of purlin or crossbeam；
As N=4, two supports under guide rail and auxiliary girder are located at the end of purlin or crossbeam, under guide rail and auxiliary girder
Other two support to arrive the distance of purlin or beam-end respectively be a,L be purlin or crossbeam across
Degree.
Compared with prior art, the beneficial effects of the present invention are: photovoltaic panel guide undertakes photovoltaic module etc. as new support
Load, by purlin or crossbeam erection support reduce the sectional dimension of guide rail or auxiliary girder, reach reduction material as far as possible
Doses, meanwhile, pass through the mechanics such as amount of deflection, moment of flexure in purlin or crossbeam of the adjustment of support position to reduce existing steel structural roof
Parameter makes it meet new roofing loading demands, i.e. photovoltaic component system support passes through it with existing light Steel-Structure Factory with Steel structural elements
Between the measures such as support, the two forms steel construction compound system, supports all load of new roofing jointly.
Detailed description of the invention
Fig. 1 is structural schematic diagram one of the invention.
Fig. 2 is structural schematic diagram two of the invention.
Specific embodiment
Light-steel roofing and photovoltaic module support compound increase bearing capacity method, comprising the following steps:
(1) column of existing light-steel roofing support construction, the bearing capacity of crossbeam and purlin are calculated separately；
(2) bearing capacity of guide rail in existing photovoltaic module support construction, auxiliary girder and support is calculated separately；
(3) load of existing light-steel roofing and photovoltaic component system application is calculated separately；
(4) load that existing light-steel roofing and photovoltaic module apply jointly is calculated；
(5) by the guide rail and the corresponding purlin for being fixed on existing light-steel roofing support construction of auxiliary girder in photovoltaic module support construction
Photovoltaic light-steel roofing composite supporting structure is constituted above item and crossbeam；
(6) according to the calculated result of above-mentioned (1), (2), (3), (4), determine in (5) guide rail and purlin, auxiliary girder and crossbeam it
Between connection type and guide rail, auxiliary girder and its support geometric dimension, use material.
Existing light-steel roofing structure and the bearing capacity of photovoltaic module support system forming composite structure can carry light steel
The load that roofing and photovoltaic module apply jointly, then the guide rail 4 in photovoltaic module support and auxiliary girder correspondence are fixed on existing light steel
On the purlin 7 and crossbeam 8 of roof structure, the composite construction of support photovoltaic module and light-steel roofing is collectively formed.
The support system that guide rail 4 in photovoltaic module, auxiliary girder 5 form can individually carry photovoltaic module, then photovoltaic module
Auxiliary girder 5 is fixed on the crossbeam 8 of existing light-steel roofing, and guide rail 4 is fixed on auxiliary girder 5, support 3 be fixed on auxiliary girder 5 and crossbeam 8 it
Between, 8 bearing capacity of crossbeam is improved by the way that the position of support 3 is arranged.
8 bearing capacity of crossbeam of existing light-steel roofing structure can satisfy photovoltaic module setting, then guide rail 4 is solid in photovoltaic module
It is scheduled on the purlin 7 of existing light-steel roofing, support 3 is fixed between guide rail 4 and purlin 7, is mentioned by the way that the position of support 3 is arranged
High 7 bearing capacity of purlin.
Guide rail 4, auxiliary girder 5 are separately fixed on the purlin 7 and crossbeam 8 of existing light-steel roofing in photovoltaic module, and support 3 is solid
It is scheduled between guide rail 4 and purlin 7, auxiliary girder 5 and crossbeam 8, improves light-steel roofing bearing capacity by the way that the position of support 3 is arranged.
Purlin 7 is not enough to carry photovoltaic module load, but when material property is but also with certain bearing capacity, then purlin 7 with
N number of hold-down support 3 is set between guide rail 4 and constitutes the compound purlin of photovoltaic light-steel roofing, and the number of N and position are soft by structural analysis and computation
Part PK-PM is determined；
As N=2, the distance of support 3 to 7 end fixed pivot of purlin is a,q1
For original structure roofing dead load, q2For the combination of the loads such as photovoltaic module load and roofing work, wind, snow, L is the span of purlin；Work as N
When=4, two supports 3 are located at the end of purlin 7, and the distance of other two support 3 to 7 end of purlin is a,
L is the span of purlin.
Crossbeam 8 is not enough to carry photovoltaic module load, but when material property is but also with certain bearing capacity, then crossbeam 8 with
N number of hold-down support 3 is set between auxiliary girder 5 and constitutes photovoltaic light-steel roofing composite transverse beam, and the number of N and position are soft by structural analysis and computation
Part PK-PM is determined；
As N=2, the distance of support 3 to 8 end fixed pivot of crossbeam is a,
q1For original structure roofing dead load, q2For the combination of the loads such as photovoltaic module load and roofing work, wind, snow, L is the span of crossbeam；
As N=4, two supports 3 are located at the end of crossbeam 8, and the distance of other two support 3 to 8 end of crossbeam is a,L is the span of crossbeam.
The purlin 7 and crossbeam 8 of existing light-steel roofing are not enough to carry photovoltaic module load, then purlin 7 and guide rail 4, crossbeam 8
It sets N number of hold-down support 3 respectively between auxiliary girder 5 and constitutes photovoltaic light-steel roofing composite supporting structure, the number of N and position are by structure
Analytical calculation software PK-PM is determined；
As N=2, the distance of 8 end fixed pivot of support to purlin 7 or crossbeam is a,
q1For original structure roofing dead load, q2For the combination of the loads such as photovoltaic module load and roofing work, wind, snow, L is purlin or crossbeam
Span；
As N=4, two supports 3 are located at the end of purlin 7 or crossbeam 8, other two support 3 arrives purlin 7 or crossbeam 8
The distance of end is a,L is the span of purlin or crossbeam.
Light-steel roofing and photovoltaic module support the compound structural system for increasing bearing capacity method, leading in photovoltaic module support
Rail 4 and the correspondence of auxiliary girder 5 are fixed on the purlin 7 and crossbeam 8 of existing light-steel roofing structure, collectively form support photovoltaic module and light
The composite construction of steel roofing.The crossbeam 8 of existing light-steel roofing and the bearing capacity of purlin 7 can not carry light-steel roofing and photovoltaic
The load that component applies jointly, then the guide rail 4 in photovoltaic module support system and the correspondence of auxiliary girder 5 are fixed on existing light-steel roofing
On purlin 7 and crossbeam 8, the composite construction of support photovoltaic module and light-steel roofing is collectively formed；When guide rail 4, pair in photovoltaic module
The support system that beam 5 forms can individually carry photovoltaic module, then the auxiliary girder 5 of photovoltaic module is fixed on the cross of existing light-steel roofing
On beam 8, guide rail 4 is fixed on auxiliary girder 5, and support 3 is fixed between auxiliary girder 5 and crossbeam 8, collectively forms composite transverse beam；When existing
8 bearing capacity of crossbeam of light-steel roofing structure can satisfy photovoltaic module setting, then guide rail 4 is fixed on existing light steel in photovoltaic module
On the purlin 7 of roofing, support 3 is fixed between guide rail 4 and purlin 7, collectively forms compound purlin.
As shown in Figure 1, the purlin of existing light-steel roofing is not enough to carry photovoltaic module load, but material property is but also with one
When determining bearing capacity, then N number of hold-down support is set between purlin and guide rail and constitutes photovoltaic light-steel roofing composite supporting structure, of N
Several and position is determined by structural analysis and computation software PK-PM；
As N=2, the distance of support to purlin end fixed pivot is a,
q1For original structure roofing dead load, q2For the combination of the loads such as photovoltaic module load and roofing work, wind, snow, L is the span of purlin；
As N=4, two supports are located at the end of purlin, and the distance of other two support to purlin end is a,L is the span of purlin.
As shown in Fig. 2, the crossbeam of existing light-steel roofing is not enough to carry photovoltaic module load, but material property is but also with one
When determining bearing capacity, then N number of hold-down support is set between crossbeam and auxiliary girder and constitutes photovoltaic light-steel roofing composite supporting structure, of N
Several and position is determined by structural analysis and computation software PK-PM；
As N=2, the distance of support to beam-end fixed pivot is a,
q1For original structure roofing dead load, q2For the combination of the loads such as photovoltaic module load and roofing work, wind, snow, L is the span of crossbeam；
As N=4, two supports are located at the end of crossbeam, and the distance of other two support to beam-end is a,L is the span of crossbeam.
The purlin of existing light-steel roofing and crossbeam are not enough to carry photovoltaic module load, then purlin and guide rail, crossbeam with
N number of hold-down support is set between auxiliary girder respectively and constitutes photovoltaic light-steel roofing composite supporting structure, the number of N and position are by structural analysis
Software for calculation PK-PM is determined；
As N=2, the distance of support to purlin or beam-end fixed pivot is a,
q1For original structure roofing dead load, q2For photovoltaic module load and roofing
The combination of the loads such as work, wind, snow, L are the span of purlin or crossbeam；
As N=4, two supports under guide rail and auxiliary girder are located at the end of purlin or crossbeam, under guide rail and auxiliary girder
Other two support to arrive the distance of purlin or beam-end respectively be a,L be purlin or crossbeam across
Degree.
Claims (9)
1. light-steel roofing and photovoltaic module support compound increase bearing capacity method, comprising the following steps:
(1) the column of existing light-steel roofing support construction, the bearing capacity of crossbeam and purlin are calculated separately；
(2) the bearing capacity of guide rail in existing photovoltaic module support construction, auxiliary girder and support is calculated separately；
(3) the load of existing light-steel roofing and photovoltaic component system application is calculated separately；
(4) the load that existing light-steel roofing and photovoltaic module apply jointly is calculated；
By in photovoltaic module support construction guide rail and the corresponding purlin for being fixed on existing light-steel roofing support construction of auxiliary girder and
Photovoltaic light-steel roofing composite supporting structure is constituted above crossbeam；
(6) it according to the calculated result of above-mentioned (1), (2), (3), (4), determines in (5) between guide rail and purlin, auxiliary girder and crossbeam
Connection type and guide rail, auxiliary girder and its support geometric dimension use material；
Guide rail, auxiliary girder are separately fixed on the purlin and crossbeam of existing light-steel roofing in photovoltaic module, and support is fixed on guide rail
Between purlin, auxiliary girder and crossbeam, light-steel roofing bearing capacity is improved by the way that the position of support is arranged, meanwhile, make existing light steel
Roof structure and photovoltaic module support system forming composite structure can carry the load that light-steel roofing and photovoltaic module apply jointly
Lotus；
Or the support system of guide rail in photovoltaic module, auxiliary girder composition can individually carry photovoltaic module, then the auxiliary girder of photovoltaic module
It is fixed on the crossbeam of existing light-steel roofing, guide rail is fixed on auxiliary girder, and support is fixed between auxiliary girder and crossbeam, passes through setting
Crossbeam bearing capacity is improved in the position of support；
Or the crossbeam bearing capacity of existing light-steel roofing structure can satisfy photovoltaic module setting, then guide rail is fixed in photovoltaic module
On the purlin of existing light-steel roofing, support is fixed between guide rail and purlin, and the position by the way that support is arranged is held to improve purlin
Carry power.
2. light-steel roofing according to claim 1 and photovoltaic module support compound increase bearing capacity method, it is characterised in that:
Purlin is not enough to carry photovoltaic module load, but when material property is but also with certain bearing capacity, then N is set between purlin and guide rail
A hold-down support constitutes the compound purlin of photovoltaic light-steel roofing, and the number of N and position are determined by structural analysis and computation software PK-PM；
As N=2, the distance of support to purlin end fixed pivot is a,q1For original
Structure roofing dead load, q2For the combination of the loads such as photovoltaic module load and roofing work, wind, snow, L is the span of purlin；
As N=4, two supports are located at the end of purlin, and the distance of other two support to purlin end is a,L is the span of purlin.
3. light-steel roofing according to claim 1 and photovoltaic module support compound increase bearing capacity method, it is characterised in that:
Crossbeam is not enough to carry photovoltaic module load, but when material property is but also with certain bearing capacity, then N is set between crossbeam and auxiliary girder
A hold-down support constitutes photovoltaic light-steel roofing composite transverse beam, and the number of N and position are determined by structural analysis and computation software PK-PM；
As N=2, the distance of support to beam-end fixed pivot is a,q1For original
Structure roofing dead load, q2For the combination of the loads such as photovoltaic module load and roofing work, wind, snow, L is the span of crossbeam；
As N=4, two supports are located at the end of crossbeam, and the distance of other two support to beam-end is a,L is the span of crossbeam.
4. light-steel roofing according to claim 1 and photovoltaic module support compound increase bearing capacity method, it is characterised in that:
The purlin and crossbeam of existing light-steel roofing are not enough to carry photovoltaic module load, then divide between purlin and guide rail, crossbeam and auxiliary girder
N number of hold-down support is not set and constitutes photovoltaic light-steel roofing composite supporting structure, and the number of N and position are by structural analysis and computation software
PK-PM is determined；
As N=2, it is a at a distance from purlin or beam-end fixed pivot that guide rail arrives respectively with the support under auxiliary girder,q1For original structure roofing dead load, q2For photovoltaic module load and roofing it is living,
The combination of the loads such as wind, snow, L are the span of purlin or crossbeam；
As N=4, two supports under guide rail and auxiliary girder are located at the end of purlin or crossbeam, guide rail with it is another under auxiliary girder
Outer two supports to the distance of purlin or beam-end be a,L is the span of purlin or crossbeam.
5. supporting the compound structural body for increasing bearing capacity method using any light-steel roofing of claim 1-4 and photovoltaic module
System, it is characterised in that: the corresponding purlin and cross for being fixed on existing light-steel roofing structure of guide rail and auxiliary girder in photovoltaic module support
Liang Shang collectively forms the composite construction of support photovoltaic module and light-steel roofing.
6. structural system according to claim 5, it is characterised in that: 1. the crossbeam of existing light-steel roofing and purlin are held
The load that loading capability can not carry light-steel roofing and photovoltaic module applies jointly, then the guide rail in photovoltaic module support system and
Auxiliary girder correspondence is fixed on the purlin and crossbeam of existing light-steel roofing, collectively form support photovoltaic module and light-steel roofing it is compound
Structure；2. when the support system of guide rail in photovoltaic module, auxiliary girder composition can individually carry photovoltaic module, then the pair of photovoltaic module
Beam is fixed on the crossbeam of existing light-steel roofing, and guide rail is fixed on auxiliary girder, and support is fixed between auxiliary girder and crossbeam, common structure
At composite transverse beam；3. when the crossbeam bearing capacity of existing light-steel roofing structure can satisfy photovoltaic module setting, then in photovoltaic module
Guide rail is fixed on the purlin of existing light-steel roofing, and support is fixed between guide rail and purlin, collectively forms compound purlin.
7. structural system according to claim 5, it is characterised in that: the purlin of existing light-steel roofing is not enough to carry photovoltaic
Component load, but when material property is but also with certain bearing capacity, then N number of hold-down support is set between purlin and guide rail constitutes photovoltaic
Light-steel roofing composite supporting structure, the number of N and position are determined by structural analysis and computation software PK-PM；As N=2, support is arrived
The distance of purlin end fixed pivot is a,q1For original structure roofing dead load,
q2For the combination of the loads such as photovoltaic module load and roofing work, wind, snow, L is the span of purlin；
As N=4, two supports are located at the end of purlin, and the distance of other two support to purlin end is a,L is the span of purlin.
8. structural system according to claim 5, it is characterised in that: the crossbeam of existing light-steel roofing is not enough to carry photovoltaic
Component load, but when material property is but also with certain bearing capacity, then N number of hold-down support is set between crossbeam and auxiliary girder constitutes photovoltaic
Light-steel roofing composite supporting structure, the number of N and position are determined by structural analysis and computation software PK-PM；As N=2, support is arrived
The distance of beam-end fixed pivot is a,q1For original structure roofing dead load,
q2For the combination of the loads such as photovoltaic module load and roofing work, wind, snow, L is the span of crossbeam；
As N=4, two supports are located at the end of crossbeam, and the distance of other two support to beam-end is a,L is the span of crossbeam.
9. structural system according to claim 5, it is characterised in that: the purlin of existing light-steel roofing is not enough to crossbeam
Photovoltaic module load is carried, then sets N number of hold-down support between purlin and guide rail, crossbeam and auxiliary girder respectively and constitutes photovoltaic light-steel roofing
Composite supporting structure, the number of N and position are determined by structural analysis and computation software PK-PM；
As N=2, it is a at a distance from purlin or beam-end fixed pivot that guide rail arrives respectively with the support under auxiliary girder,q1For original structure roofing dead load, q2For photovoltaic module load and roofing it is living,
The combination of the loads such as wind, snow, L are the span of purlin or crossbeam；
As N=4, two supports under guide rail and auxiliary girder are located at the end of purlin or crossbeam, guide rail with it is another under auxiliary girder
It is a that outer two supports arrive purlin or the distance of beam-end respectively,L is the span of purlin or crossbeam.
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