Abstract
Introduction: An experiment was carried out on the basis of material nonlinearity, geometry nonlinearity and semi rigid fasteners for the internal force distribution and transfer rules of the scaffold. Methods: This paper presents results from a set of numerical studies on the influence of the random imperfection method, the interaction of various imperfections and the most disadvantageous stability limit load. Result and Conclusion: Data from numerical studies indicate that stress at the top of the vertical bar was larger within the scope of load; and the horizontal bar and brace participated in the work of the scaffold. The internal force that came through the two types of bars enabled us to realize the redistribution in every vertical bar in order to decrease the stress from the top to the bottom of the vertical bars and involve them in the work of the scaffold. Data from numerical studies also indicates that these imperfections all interact with each other and the load distribution also influences the scaffold’s stability.
Highlights
An experiment was carried out on the basis of material nonlinearity, geometry nonlinearity and semi rigid fasteners for the internal force distribution and transfer rules of the scaffold
The reason for this phenomenon was that the horizontal bars and the brace transferred force in the 10th vertical bar to the other vertical bars to result in a stress decrease from top to bottom in 10th vertical bar
The gauge point and the gauge point belonged to the same horizontal bar but were located on opposite sides of 10th vertical bar, as shown Fig. (4)
Summary
This paper presents results from a set of numerical studies on the influence of the random imperfection method, the interaction of various imperfections and the most disadvantageous stability limit load. Result and Conclusion: Data from numerical studies indicate that stress at the top of the vertical bar was larger within the scope of load; and the horizontal bar and brace participated in the work of the scaffold. The internal force that came through the two types of bars enabled us to realize the redistribution in every vertical bar in order to decrease the stress from the top to the bottom of the vertical bars and involve them in the work of the scaffold. Data from numerical studies indicates that these imperfections all interact with each other and the load distribution influences the scaffold’s stability
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