Study on the Behavior of RC Infilled Frames with Multiple Bays Using ATENA 2D

Abstract

In the developing countries around the world especially in India, the reinforced concrete (RC) frame is the most popular construction in multi-storey buildings. Due to economically and abundant availability, brick infill is being used in multi-storey building. During the gravity load analysis, brick infill in RC frames is treated as nonstructural member. But during the lateral load subjected to infilled frame, infill wall tends to interact with the bounding frame by providing in-plane stiffness. Thus infill plays an important role in resisting lateral load. In RC frame with Multiple Bays are common in all structures in which it is necessary to understand the behaviour of RC frame with multiple bay with infill subjected to lateral load. To understand the complex of RC frame behaviour with multiple bay infill frame subjected to lateral load, analytical modeling is very popular to encompass the global behavior of the system. In the present study ATENA 2D (2015), software were used to capture the nonlinear behavior of the multiple bay infilled frame. Here a four storey 2D infilled frame with one-bay, two-bay and three-bay models were considered to study the behavior of RC frame with infill. The parameters like Load displacement curves, stresses distribution and pattern of cracks were identified to understand the behavior of RC frame with infill by conducting nonlinear analysis. As the numbers of bays are increased, the lateral stiffness and load carrying capacity of the frame also increased. Due to the presence of infill in multiple bays, overall performance of structure increased by increasing lateral stiffness.