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All Journal Civil Engineering Journal Journal of Civil Engineering and Vocational Education
Saputra, Dezy
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Civil Engineering, Building, Construction & Architecture Education Engineering Environmental Science Transportation

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Seismic Performance Assessment of Sustainable Shelter Building Using Microtremor Method Putra, Rusnardi Rahmat; Kiyono, Junji; Ono, Yusuke; Saputra, Dezy
Civil Engineering Journal Vol 10, No 11 (2024): November
Publisher : Salehan Institute of Higher Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28991/CEJ-2024-010-11-06

Abstract

The increasing intensity of earthquakes in West Sumatra could trigger megathrust earthquakes and tsunamis at the inter-plate in the Mentawai Islands. Building assessments are necessary to determine their vulnerability to predicted earthquakes. The target is a four-story building that serves as an education building and vertical evacuation. This research proposes a complete vulnerability assessment method using single microtremor observations, and the results are used to determine seismic building performance. The natural frequency is derived from the spectral analysis of the horizontal components (NS and EW) for each level, and we considered the largest earthquake peak ground motion (PGA) in this region to be the September 30, 2009, Padang earthquake (PGA 380 gals as ground motion input). We calculated the resonance index, seismic vulnerability index, and damping ratio. The results show that the resonance index of the structure is less than 1, the vulnerability index of the UNP Faculty of Economics building ɤ > (1/100-1/200) and is 1/234 to 1/699 for the x direction and 1/207 to 1/709 for the y direction; the average damping ratio is <5% for both directions (x, y) and RDM and FSR relationship is 0.78 and 0.69 for x and y respectively. The overall findings indicate that the structural response of the evaluated buildings falls within the 'slight' damage category during seismic events. Doi: 10.28991/CEJ-2024-010-11-06 Full Text: PDF
Socialization of Earthquake Friendly House Planning with a Theme "Nagari is Resilient to Earthquake Disasters" in Nagari Kajai, West Pasaman Regency Putra, Rusnardi Rahmat; Saputra, Dezy; Agung, M. Darma
CIVED Vol. 11 No. 1 (2024): March 2024
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/cived.v11i1.520

Abstract

West Pasaman Regency is an area that has a fairly large threat of earthquake and tsunami disasters. The 6.2 Mw West Pasaman earthquake that occurred on February 25 2022 was quite large and resulted in 25 people dying, 465 people being injured and at least 16,000 people being displaced. This earthquake was located on the slopes of Mount Talamau at a depth of 10 km which was triggered by the activity of the Semangko fault fault, precisely in the unmapped Talamau segment. Apart from the loss of life, another impact caused by this earthquake disaster was the large number of collapses in people's houses. People's houses that have simple construction have a greater potential for collapse compared to other buildings whose designs comply with existing regulatory standards. In general, people's houses are only built by builders who do not know the technicalities of building earthquake-friendly houses. Builders are the main key to the quality of housing construction in society, so more attention is needed from people who are experts in their field because it is in their hands that the structural strength of a house is built. The community service organized by the Institute for Research and Community Service (LP2M) Padang State University together with several Civil Engineering lecturers aims to channel their knowledge to the community, especially to builders to increase knowledge in building earthquake-friendly houses. This activity is also expected to reduce damage in the future if an earthquake occurs, which has been designed according to standards applicable in Indonesia. From the results of interviews with several builders and local residents, it turns out that their knowledge of the basic techniques for building earthquake-friendly houses is still limited. So that this outreach can provide a useful contribution to builders' knowledge of the basics of earthquake-friendly house construction.
Co-Authors Agung, M. Darma Kiyono, Junji Putra, Rusnardi Rahmat Yusuke Ono, Yusuke