Comparing Cracking Diagram of Lightweight Filler Concrete by Increasing the Number of Frames in Light Constructions in FEM

Abstract

Due to existing major problems, construction with traditional techniques and for optimal use of the country's steel
industry requires a specific system with pre-fabricated capability to be replaced. Present study concerns about Cold–
Formed Steel constructions light filled with lightweight concrete with joint conjunctions (cap screws). Using
ABAQUS software, comparison between cracking diagrams of lightweight concrete by increasing the number of
their frames and constructional behavior has been made. The results indicate that lightweight filler concrete
increases the load-displacement area under curve (AUC), increases strain, energy absorption capacity, ductility and
behavior coefficient and finally increases its construction strength. Crack diagrams indicate that rupture in the
highest amount of strain or what we call it in frames with one crater, the most cracking are in the area connected to
the fulcrum, concrete connection to stud and bottom of the frame; and non-linear behavior of construction is a
bending behavior but by increasing the number of frames, the highest concentration of pressure and cracks are
created at the bottom of the frame. According to the shear cracking of the five crater samples, diameters cracking are
evident in the middle of the walls. Normal concrete, due to the less displacement in frames with five craters, are not
recommended to fill the walls in light constructions.