Enhancing the Seismic Response of Residential RC Buildings with an Innovative Base Isolation Technique

Abstract

The prediction of the magnitude and impact of forthcoming earthquakes remains an elusive challenge in the field of science. Consequently, extensive research efforts have been directed toward the development of earthquake-resistant design strategies aimed at mitigating building vibrations. This study focuses on the efficacy of fluid viscous dampers (FVDs) in augmenting the seismic response of a low-rise residential reinforced-concrete building, which is base-isolated, using high–damping rubber bearings (HDRBs). The structural analysis employs a non-linear approach, employing ETABS v16 software for building modeling and conducting non-linear dynamic analysis using artificial accelerograms specific to Algeria. Three distinct connection configurations to the building’s base are investigated: (1) a fixed-base structure; (2) a structure isolated by HDRBs; and (3) a structure isolated utilizing a novel parallel arrangement of HDRBs in conjunction with FVDs. Comparative evaluation of these configurations reveals noteworthy findings; the results demonstrate that the base isolation system, comprising HDRBs and FVDs, significantly diminishes the base shear force by over 80% and reduces acceleration by 54% while concurrently increasing displacement by 47%. These findings underscore the effectiveness of incorporating FVDs in conjunction with HDRBs as a means to enhance the seismic response of reinforced concrete buildings. This study showcases the potential of such structural analyses to contribute to the development of earthquake-resistant design approaches, providing valuable insights for architects and engineers involved in constructing resilient buildings in seismically active regions.

Seismic Performance Evaluation of Multi-Storey Residential Building with Friction Pendulum Bearings: Indonesia case study

“…В сейсмостойком строительстве уровни работоспособности (эффективности) зданий и сооружений имеют решающее значение для определения ожидаемого поведения конструкций при сейсмических воздействиях. Обычно в строительных нормах и правилах рассматриваются три интенсивности землетрясений (уровни сейсмической опасности) и четыре уровня работоспособности, включающие эксплуатационный (operational), непосредственного пребывания людей (immediate occupancy, IO), безопасности жизнедеятельности (life safety, LS) и предотвращения обрушения (collapse prevention, CP) 5 .…”

“…Современные исследования в области сейсмоизоляции посвящены изучению инновационных материалов, передовых аналитических методов и систем динамического управления, направленных на повышение эффективности и адаптивности систем сейсмоизоляции [5]. За последние несколько десятилетий было проведено множество экспериментальных и теоретических исследований по оценке влияния сейсмоизоляции на устойчивость конструкций к землетрясениям.…”

Earthquake Consideration in Architectural Design: Guidelines for Architects

“…Engineers can develop and test damping systems, base isolators, and other methods to lessen seismic forces' effects through simulation and analysis. These devices can improve a structure's seismic performance by reducing vibration transfer to the structure [66].…”

A Novel Three-Dimensional Composite Isolation Bearing and Its Application to the Mitigation of Earthquakes and Traffic-Induced Vibrations

“…A solution both sustainable seismic design and reduced comfort due to traffic-induced vibrations is vibration isolation, which can be realized by technologies such as self-centering, dampers, base-isolation, etc. [5,6]. Among these available solutions, base-isolations are reported to have satisfactory vibration mitigation performances and reasonable prices, and isolation bearings are the most widely used equipment for base-isolations [7].…”