Anti-continuous collapse analysis method for photovoltaic combined-row shed structure

Abstract

The invention relates to an anti-continuous collapse analysis method for a photovoltaic combined-row shed structure and relates to the technical field of photovoltaic light-steel combined-row shed. The method comprises the following steps: setting an LS-DYNA analysis environment; defining a unit type; defining a unit real constant; defining a material attribute; establishing a geometric model; performing mesh division on steel columns; carrying out the ground modeling and dividing a model into grids; building the part; converting the ground into a rigid body through a variable body; defining the contact information; applying a displacement boundary condition; defining a time and load array; applying a uniform distribution load to the top surface of a greenhouse; defining the damping; setting the solving time; checking a displacement time-range curve at a failure node through a post-processing result; dynamically displaying the deformation condition of the structure; dynamically displaying a stress contour line. According to the invention, the risk of continuous collapse of the shed type after the failure of a certain structure can be rapidly and accurately calculated. The local reinforcement is carried out in the region with the continuous collapse risk, and risks are avoided. The calculation data support can be provided for the design of the shed type, and whether the design is reasonable or not is verified.

Description

technical field [0001] The invention relates to the technical field of photovoltaic row sheds, in particular to a method for analyzing the resistance to continuous collapse of a photovoltaic row shed structure. Background technique [0002] The continuous collapse of the greenhouse steel structure refers to the initial damage caused by the local damage of the structure under the action of unconventional loads (such as impact, fire, etc.), and then the other parts of the structure are damaged due to the redistribution of internal forces. This in turn creates a cascading effect that eventually leads to partial or total collapse of the structure. The continuous collapse of photovoltaic greenhouse structures often leads to heavy casualties and property losses. It is more and more important to conduct progressive collapse analysis to study the collapse mechanism and anti-collapse design of photovoltaic greenhouse structures. LS-DYNA has the incomparable advantages of architectur...

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Problems solved by technology

[0003] The purpose of the present invention is to aim at the defects and deficiencies of the prior art, and to provide a method for analyzing the anti-successive collapse of the structure of photovoltaic row sheds. The results are accurate and efficient, and the performance has double insurance. It can analyze the connection position and local details of the greenhouse structure in detail, and judge whether it will collapse or continue to collapse; it solves the problem that finite element software such as PKPM and other finite element software cannot analyze the continuous collapse of the steel structure of the greenhouse problem of prediction

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