Abstract
In this paper, the ABAQUS finite element software is used to model and analyze the single-layer reticulated shell structure. And the method of removing the constraints of key components is used to analyze the anti-continuous collapse performance of this reticulated shell structure under the action of geometric defects and welding deformation. Welding deformation is mainly caused by welding and prestressed cable tensioning of single-layer reticulated shell. The results show that the removal of the key columns under the reticulated shell will lead to the continuous collapse of the upper part, which leads to the continuous collapse of the whole structure, and the welding deformation can make the continuous collapse of the whole reticulated shell more obvious. Thus determining the influence of geometric defects and temperature shrinkage deformation on the anti-continuous collapse performance.
Highlights
Single-layer reticulated shell structure is a kind of space bar system structure
Analysis method After adding self weight to the reticulated shell, find the place where the column reaction force is the largest, and remove the column bottom constraint of the column here, that is, delete the column here in the finite element simulation software to simulate the continuous collapse of the reticulated shell due to the damage of structural column caused by accidental load (This is the method to obtain geometric defects in this paper)
The temperature stress caused by prestressed cable tensioning is to analyze the stress of the prestressed component and the overall structure as a whole by implementing the temperature drop on the unit of the prestressed component [6], so as to simulate the prestress effect of the prestressed component on the overall structure
Summary
- Parametric modeling program of singlelayer spherical reticulated shell structure and prediction program of global stability ultimate bearing capacity H Qi, X R Wang, Z Y Huang et al. - The Progressive Partition Method to Identify Damage of Single-Layer Reticulated Shell Xiaomin Fu, Cuijuan Ma, Huidi Zhang et al. - Failure Analysis of the Top Reticulated Shell Structure of a 20,000 Cubic Meter Floating Roof Storage Tank Liang Du, Shu Xing, Deyu Liu et al. This content was downloaded from IP address 154.13.228.12 on 02/03/2022 at 15:00
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