APPLICATION OF PERFORMANCE-BASED SEISMIC DESIGN ON CONCRETE GIRDER BRIDGE(LOCATION: PALU IV BRIDGE, SULAWESI TENGAH)

• Main Author: Agus Kurniawan, Reza
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/71355
• Institution: Institut Teknologi Bandung

The development of bridge seismic design in Indonesia which is based on SNI 2833:2016 currently still uses the LRFD method, which uses seismic design categories and operational categories to determine design parameters used in the analysis. This method lacks a relationship between engineering design parameters and performance level targets. Currently, National Cooperative Highway Research Program (NCHRP) proposes a performance-based seismic design method as future guidelines for bridge seismic design by determining engineering design parameters that are directly linked to damage limit states to identify the performance level of a bridge. This method is beneficial for the bridge owner and designer to anticipate the chosen performance level target that the bridge could resist as a design earthquake happen. Performance level targets are divided into 3 categories, the highest to the lowest: fully operational, operational, and life safety. This PBSD method has been developing towards the actual damage states on the bridge that invented engineering design parameters that can be linked to performance level by evaluating the strain limit states on bridge earthquake resisting elements first yielding. The application of a performance-based seismic design on a continuous reinforced concrete bridge named Palu IV bridge with a total length of main span (rigid frame) is 116 meters and two other side spans are 66,7 meters. This research will be evaluating the application of a performance-based seismic design on the selected bridge based on design parameters on the bridge pier (strain limits, drift and rotations limit) according to NCHRP 440, 949 and ASCE 41-17 document using Midas Civil 2022. This analysis would use nonlinear time history analysis with 7 couples of upper and lower-level ground motion acceleration to capture the design parameters based on the bridge performance level target. The result of this study shows that Palu IV bridge is in full operational performance level both for lowerlevel ground motion (100 years return period) and upper-level ground motion (1000 years return period).