THE ANALYSIS OF MASONRY INFILL WALL BEHAVIOUR <BR />ON CYCLICAL LATERAL FORCE

• Main Author: (NIM : 25099047), Herwani
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/5262
• Institution: Institut Teknologi Bandung

<b>Abstract :</b><p align="justify"> <br /> In the structural design for frames most likely the designers do not consider the infill wall such as masonries to be structural components. The masonries are assumed to act as gravity load on beams. However, for some degree of horizontal loading, masonries as the the infill walls between columns are capable to resist the load as shear walls. This different behaviour of the masonry in this case will change the stiffness as well as the strength of the structures. Ignoring this contribution of the masonry develops a misleading concept and design for the frame structures. In this study, the effect of the masonries as infill wall is taken into account. The analysis use the non-linear finite element plane stress method. Eight nodal isoparametrik elements are developed for concrete and masonry. Steel reinforcement and linkage elements are modelled as three nodal plane truss element. The discrete model is used to represent the elements assembled in their nodals. To represent the effect of seismic load on the structures, the mathematical model is developed subjected to cyclic loading. The variables studied in the analysis are degree of displacement ductility, energy dissipation, strength and stiffness degradation under different types of height to depth ratios (H/B). The result showed that the infill masonry walls for some extent under horizontal loading increase the strength and stiffness of the structures, reducing the ductility. The higher H/B ratio the lower the degree of energy dissipation is observed in the study. In most case the model gives satisfactory results. However, some improvement need to be considered in the linkage element model.