About Load-bearing requirements of photovoltaic brackets
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The optimized main beam adopts a section height of 100mm, a section width of 36mm, and a section thickness of 2mm. Compared to the original bracket, the optimized bracket has reduced weight by 8.459kg, with a weight reduction rate of 14.45%.
Cable-supported photovoltaic (PV) modules have been proposed to replace traditional beam-supported PV modules. The new system uses suspension cables to bear the loads of the PV modules and therefore has the characteristics of a long span, light weight, strong load capacity, and adaptability to complex terrains.
The results showed that the structure had a strong load-bearing capacity. Failure of the cables and triangular brackets are the two main types of failure of the primary structure.
Through simulation and mechanical analysis, the design suggestions for the fixed photovoltaic support are given. The experimental results indicate that under the uniform load the failure mode of PV support is overall instability due to the torsion deformation of the purlins, but the bearing capacity of the beam and column is basically enough.
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6 FAQs about [Load-bearing requirements of photovoltaic brackets]
What factors affect the bearing capacity of new cable-supported photovoltaic modules?
The pretension and diameter of the cables are the most important factors of the ultimate bearing capacity of the new cable-supported PV system, while the tilt angle and row spacing have little effect on the mechanical characteristics of the new type of cable-supported photovoltaic modules.
How does torsion stiffness affect load bearing capacity of PV system?
The increase of torsion stiffness when the torsion displacement rises benefits the stability of the new PV system. The load bearing capacity of the PV system is discussed under self-weight, static wind load, snow load, and their combination.
What is a new cable-supported photovoltaic system?
A new cable-supported photovoltaic system is proposed. Long span, light weight, strong load capacity, and adaptability to complex terrains. The nonlinear stiffness of the new cable-supported photovoltaic system is revealed. The failure mode of the new structure is discussed in detail.
How does cable size affect load bearing capacity?
However, the initial force of cables and cable diameter obviously affects the load bearing capacity of the structure. When the initial cable force increases from 10 kN to 50 kN, the bearing capacity decrease by 14%. When the diameter of the cable increases from (14,16) mm to (24,32) mm, the bearing capacity increases by 272%. Table 11.
What is a new cable supported PV structure?
New cable supported PV structures: (a) front view of one span of new PV modules; (b) cross-section of three cables anchored to the beam; (c) cross-section of two different sizes of triangle brackets. The system fully utilizes the strong tension ability of cables and improves the safety of the structure.
How safe are flexible PV brackets under extreme operating conditions?
Safety Analysis under Extreme Operating Conditions For flexible PV brackets, the allowable deflection value adopted in current engineering practice is 1/100 of the span length . To ensure the safety of PV modules under extreme static conditions, a detailed analysis of a series of extreme scenarios will be conducted.
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