Dynamic wind load analyzing method for photovoltaic winter warming shadowy and sunny greenhouse

Abstract

The invention discloses a dynamic wind load analyzing method for a photovoltaic winter warming shadowy and sunny greenhouse based on ANSYS Workbench. The problem that an existing analyzing method is long in analyzing time, high in difficulty and low in efficiency is solved. The dynamic wind load analyzing method comprises the following steps: three-dimensional molding and guiding-in, model geometric processing, mid-surface extracting treatment of a support of the greenhouse and treatment of a drawing beam of an arched rack, definition of material attributes, separate mesh generation of an arched girder and the support, restraining of degree of freedom, setting of load substeps, application of wind pressure spectra and running solving. By the analyzing method, stress and deformation conditions of the greenhouse can be accurately analyzed, the analyzing time can be saved, and the analyzing efficiency is improved; and meanwhile, the dynamic wind load analyzing method has abilities of carefully checking and quantifying details such as connection and local portions of the greenhouse.

Description

technical field [0001] The patent of the present invention provides a dynamic wind load analysis method based on ANSYS Workbench for photovoltaic winter warm shade shed. Background technique [0002] The photovoltaic winter warming shed is a new type of photovoltaic agricultural greenhouse developed according to market demand. It has the advantages of low cost and convenient installation, but the calculation of the structure of this type of greenhouse is more complicated. After the photovoltaic light steel herb shed is designed and determined, it is necessary to calculate the stability of the structure, especially when the connecting rods and other slender parts are subjected to dynamic wind loads, if the stress on the connecting parts is less than the allowable stress , the pressure bar will deform and lose its bearing capacity, that is, the problem of pressure bar instability. [0003] The design of the photovoltaic winter warm shade shed must comply with the "Code for De...

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Problems solved by technology

[0002] Photovoltaic winter warming shed is a photovoltaic agricultural greenhouse newly developed according to market demand. It has the advantages of low cost and convenient installation, but the calculation of the structure of this type of greenhouse is more complicated.

After the photovoltaic light steel herb shed is designed and determined, it is necessary to calculate the stability of the structure, especially when the connecting rods and other slender parts are subjected to dynamic wind loads, if the stress on the connecting parts is less than the allowable stress , the pressure bar will be deformed and lose its bearing capacity, that is, the problem of pressure bar instability

[0003] The design of the photovoltaic winter warm shade shed must comply with the "Code for Design of Steel Structures". According to the PKPM steel structure technical conditions issued by China Building Science and Technology, the greenhouse must meet the conditions of use under dynamic wind load conditions, that is, check the design of the shed The structural strength of the type under this working condition is usually checked by engineers and technicians at the current stage using PKPM software, which is cumbersome in modeling and difficult in model import. During the analysis process, the details of the connection and parts of the greenhouse cannot be checked carefully and quantified , compared with the use of ANSYS WORKBENCH module, the analysis of PKPM has the problems of long analysis time, high difficulty and low efficiency

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