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All Journal MEDIA KOMUNIKASI TEKNIK SIPIL Astonjadro
Pasya, Namira Risza
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Civil Engineering, Building, Construction & Architecture

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Seismic Performance Evaluation of Simple Reinforced Masonry Houses with Brick Walls: Experimental and Numerical Approaches Pasya, Namira Risza; Saputra, Ashar; Setiawan, Angga Fajar; Priyosulistyo, Henricus
ASTONJADRO Vol. 14 No. 4 (2025): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v14i4.19253

Abstract

This study aims to evaluate the performance of brick houses against earthquakes through experimental and numerical approaches. The research objects include two single-story houses located at University of Gadjah Mada (UGM) and Turi, Sleman, Yogyakarta. Microtremor measurement was carried out using accelerometers to record building vibrations, which were then analyzed using Fast Fourier Transform (FFT) to obtain the natural frequency on site of the structure. Numerical modeling was carried out using finite element analysis to validate and asses the building’s frequency response to earthquake loads based on Service Level Earthquake (SLE), Design Basis Earthquake (DBE), and Maximum Considered Earthquake (MCE). The results of the study indicate that the modeling can be validated based on the natural frequency approach from field and numerical evaluate. The maximum displacement that occured at the SLE, DBE, and MCE levels exceeded the allowable limits, indicating that both houses are in an unsafe condition. The structural performance evaluation based on Federal Emergency Management Agency (FEMA 356) shows that the houses in UGM and Turi fall into the Collapse Prevention (CP) category, which mean that the building can no longer be used as houses on the verge of collapse. Although the maximum acceleration analysis of the houses indicates that the values are lower than the design peak ground acceleration (PGAM), structural failure may still occur. The results of this study are expected to provide insights into earthquake-resistant house design as well as recommendations for improving structural resistance to seismic load.
Pendekatan Statistik Model Hubungan Tegangan-Regangan Beton dengan Agregat Daur Ulang Pasya, Namira Risza; Idris, Yunita; Abdullah, Abdullah
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 28, Nomor 1 (2022)
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (358.603 KB) | DOI: 10.14710/mkts.v28i1.40075

Abstract

Penggunaan agregat daur ulang menjadi salah satu alternatif solusi untuk permasalahan ketersediaan agregat alam sebagai bahan beton. Tujuan dari penelitian ini adalah untuk menganalisis kurva hubungan tegangan-regangan tekan beton berdasarkan data studi literatur dan menggunakan pendekatan statistik. Dalam penelitian ini ditinjau kuat tekan (f’c), modulus elastisitas (Ec), dan regangan (εo) sebagai dasar analisis. Penelitian menggunakan 124 data dari 25 jurnal peneliti terdahulu dengan proporsi campuran agregat daur ulang sebesar 50% dan 100% untuk mendapatkan suatu model hubungan kurva tegangan- regangan. Metode yang digunakan adalah analisis regresi linear sederhana menggunakan aplikasi Statistical Package for The Social Sciences (SPSS). Penelitian ini dibagi atas tiga fase analisis, yaitu analisis untuk hubungan tegangan-regangan untuk keseluruhan data, tanpa menggunakan zat aditif, dan menggunakan zat aditif. Hasil analisis pengaruh FAS terhadap kuat tekan beton menunjukan nilai signifikansi yang lebih kecil dari 0,05 yang merupakan batas dari nilai signifikansi. Ini menunjukkan bahwa nilai FAS memiliki pengaruh terhadap nilai kuat tekan beton yang menggunakan agregat daur ulang.
Co-Authors Abdullah Abdullah Ashar Saputra Henricus Priyosulistyo, Henricus Idris, Yunita Setiawan, Angga Fajar