ANALYSIS OF FRICTION PENDULUM BASE ISOLATION SYSTEM ON REINFORCED CONCRETE BUILDING WITH TORSIONAL IRREGULARITY

• Main Author: Patrick Muliana, Simon
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/66974
• Institution: Institut Teknologi Bandung

Earthquake is a common natural phenomena in Indonesia. Lateral loads from earthquakes may cause damages to structural and nonstructural elements in a building, and these damages can disrupt human activities that is involved inside buildings. Many innovations are being developed to increase the structural performance and anticipate the loss caused by the effects of earthquakes. Base isolation system is a method that is being developed to achieve better structural performance by reducing the effects of earthquake on the superstructures. Friction pendulum system is a type of base isolation system that utilizes pendulum mechanisms and friction force to reduce the seismic loads on superstructures. Certain factors may impact the effectiveness of friction pendulum system, such as soil and structural characteristics. In this research, the effectiveness of friction pendulum system on reinforced concrete buildings with torsional irregularity will be analysed on a variety of 10 story and 5 story building. Building model of 10 story and 5 story will be compared between fixed-base model and base-isolated model on soft soil conditions in Bandung. Nonlinear time history analysis with seven pairs of time history data is used to compare the models. This research will cover the concepts of double concave friction pendulum (DCFP) design, comparing the effects of friction pendulum on 10 story and 5 story building, comparing the design of friction pendulum on different locations in base level, and comparing structural responses and the structural performance of building with and without base isolation.