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All Journal Journal of Civil Engineering International Journal of Applied Sciences and Smart Technologies
Sakib, Mohammad Atiqur Rahman
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Computer Science & IT Energy Engineering Industrial & Manufacturing Engineering

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Analytical Investigation of The Performance of Fluid Viscous Damper and Lead Rubber Bearing Isolator on A Multi-Storey Building Singha, Badhon; Chowdhury, Nafis Niaz; Sakib, Mohammad Atiqur Rahman
Journal of Civil Engineering Vol 40, No 1 (2025)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j20861206.v40i1.22386

Abstract

Earthquakes are devastating natural events that can cause substantial structural damage, often resulting in collapses due to inadequate seismic design. This study investigates the effectiveness of two seismic protection systems: fluid viscous damper (FVD) and lead rubber bearing (LRB) isolation, in improving the seismic performance of a structure. The initial research did not include any base isolator or link damper for earthquake protection. The results were then compared to a similar investigation of the same structure using FVD and LRB isolation. Significant differences in structural behavior were observed, with both systems demonstrating improved performance in mitigating seismic forces. The findings highlight the importance of incorporating advanced damping mechanisms, such as FVD and LRB, in building design to enhance earthquake resilience in prone regions. This study underscores the critical need for integrating such seismic protection systems to reduce structural damage and improve safety during earthquakes.
Efficient Design of Reinforced Columns: Insights into Lateral Confinement and Performance Singha, Badhon; Chowdhury, Nafis Niaz; Sakib, Mohammad Atiqur Rahman
International Journal of Applied Sciences and Smart Technologies Volume 07, Issue 1, June 2025
Publisher : Universitas Sanata Dharma

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24071/ijasst.v7i1.10376

Abstract

In structural engineering and architecture, a column is a vertical load-bearing member crucial for supporting compressive loads. Reinforced concrete columns consist of both confined and unconfined concrete. Pioneering experiments by Mander et al. (1988a) (Observed stress–strain behavior of confined concrete, 1988a) and (1988b) (Theoretical stress-strain model of confined concrete., 1988b) scrutinized the performance of columns under seismic strain rates, revealing that optimal performance is achieved through meticulous identification of maximum stress and strain locations. The initial stage is to realize the specified attributes derived from SAAP200, which are then included into the ABAQUS finite model simulation. A Validation was conducted by finite model simulation process in Abaqus by comparing results with those presented by Guadagnuolo et al. (2020) to assess the accuracy and reliability of the methodology. The resulting Load vs Displacement relations are then subjected to validation based on property-centric criteria. The efficacy of outcomes is highlighted by presenting distinct load vs displacement curves for concrete columns at various pitch distances. Excessive spacing between hoops can result in early spalling and reduced strength, whereas an increased hoop area in the intermediate zone improves both load-carrying and deformation capabilities.
Co-Authors Chowdhury, Nafis Niaz Chowdhury, Nafis Niaz Singha, Badhon Singha, Badhon