Performance assesment of code based buildings using the new SAM PH atlas

• Main Authors: Ramos, Joaquin Miguel P., Mendoza, Rodolfo P., Jr., Luceno, Lennie, Toral, Kenneth
• Format: text
• Published: Animo Repository 2022
• Subjects: Earthquake resistant design—Philippines; Building; Structural Engineering
• Online Access: https://animorepository.dlsu.edu.ph/faculty_research/12559
• Institution: De La Salle University

The Philippine Institute of Volcanology and Seismology launched the Spectral Acceleration Maps of the Philippines (SAM PH) Atlas. The SAM PH Atlas incorporates the spectral acceleration parameters for the short period and 1.0 second period in both national and regional scales which can be utilized as references for engineers to design and assess structures. Using the SAM PH Atlas for different locations in the Philippines gives different spectral acceleration parameters given the same site conditions, which are the distance from the nearest active fault line and the soil type according to the NSCP. Therefore, the expected performance of the structure may be different based on the newly published maps. A regular reinforced concrete SMRF building is presented and designed based on the NSCP 2015. The building is 8 stories tall with a roof deck and a typical story height of 3.66 m and has a footprint of 27 m x 36 m with a typical column to column span of 9 m. The building is first designed using a code-based approach in accordance with the seismic provisions of NSCP 2015. The performance of the designed building is evaluated using the new SAM PH Atlas considering two different regions in the Philippines with different seismicity levels, which are Manila and Davao. A static pushover analysis is conducted with seismic parameters based on the given locations. The results of the static pushover analysis show that the building did not exceed the target displacement demand for collapse prevention when it is in Manila but exceeded the target displacement demand when in Davao.