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All Journal BENTANG : Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil
Maulida, Alfia Salma Mei
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Civil Engineering, Building, Construction & Architecture Transportation

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Performance Based Design: Performance Analysis on Fixed Base Structure and Structures with High Damping Rubber Bearing (HDRB) Maulida, Alfia Salma Mei; Umniati, B. Sri; Sulton, Mohammad; Maulidani, Andra Akmal
Bentang : Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil Vol 13 No 1 (2025): BENTANG Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil (January 2025)
Publisher : Universitas Islam 45

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33558/bentang.v13i1.10112

Abstract

Buildings in Malang City face large lateral load from earthquakes due to seismic activity. One method of reducing the lateral load is to use base isolators. Conventional building design resists lateral load by designing buildings to be elastic or rigid with Strength Based Design criteria. However, elasticity results in larger building elements, stiffness increases the building's exposure to earthquake forces, and Strength Based Design is unreliable in shielding from earthquakes since its recommended to be a minimum design criterion by FEMA P-424. Therefore, more comprehensive design criteria such as Performance Based Design are needed. The objective of this study is to assess the analysis results and performance levels of fixed base structure compared to structures with HDRB, including the effect of rubber thickness and shear modulus. This study starts by modeling a 7-story building with a fixed base structure using ETABS. The results were then used to determine the type of HDRB, from two models with different rubber thickness and shear modulus, for modeling structures with HDRB. Furthermore, the running results of the two structures are analyzed to evaluate the level of performance of the structures based on Performance Based Design criteria. The results showed differences with the reduction of the average period value by 91.51%, the base shear as 36.05% and 33.11% in longitudinal and transverse direction respectively, and the average interstory drift as 54.86% in X-axis and 31.17% Y-axis. The target displacement of the structures with HDRB decreases and the performance levels including the analysis results are improved.
Perbandingan Struktur Tuned Mass Damper dan Struktur Fixed Base dengan Metode Performance Base Design Maulidani, Andra Akmal; Sulton, Mohammad; Umniati, B. Sri; Maulida, Alfia Salma Mei
Bentang : Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil Vol 13 No 1 (2025): BENTANG Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil (January 2025)
Publisher : Universitas Islam 45

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33558/bentang.v13i1.10113

Abstract

Indonesia's location in an earthquake zone with moderate to high intensity increases the urgency of planning high-rise earthquake-resistant buildings. Losses that occur due to the absence of procedures to predict earthquakes properly and accurately, make it important to innovate structural systems and evaluate their performance against earthquakes. This study aims to determine the impact of adding Tuned Mass Damper to buildings viewed from the level of structural performance compared to Fixed Base structures. Performance Base Design based on FEMA 440, is a design that categorizes the target damage to building structures into 4 levels of damage reviewed from the percentage of story deviation to the total height of the structure. Tuned Mass Damper is an innovation in structural systems consisting of mass, springs, and dampers installed to absorb their dynamic response. Pendulum Tuned Mass Damper is a Tuned Mass Damper system using a pendulum swinging relative to the floor motion. The addition of Tuned Mass Damper to Fixed Base type buildings causes a decrease in deviation of up to 19% from the original deviation depending on the mass ratio. This addition also reduces the value of the structural period by up to 9% with the period still below the maximum period standard. In addition, the addition of Tuned Mass Damper also reduces the target value of structural displacement based on FEMA 440 by 52% with the immediate occupancy building performance level.
Co-Authors B. Sri Umniati Maulidani, Andra Akmal Mohammad Sulton