Earthquake-Resistant Design of Reinforced Concrete Buildings
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Abstract
Earthquake-resistant design of reinforced concrete buildings aims to protect human life, control structural and non-structural damage, and prevent collapse during severe seismic events. Earthquake forces differ from ordinary gravity loads because they are dynamic, cyclic and strongly influenced by structural mass, stiffness, ductility, configuration and soil conditions. This article examines the fundamental principles, analysis methods and detailing requirements used in the seismic design of reinforced concrete buildings. It adopts a conceptual and technical review methodology based on established structural-engineering literature and major design standards, including IS 1893 (Part 1): 2016, IS 13920: 2016, IS 456: 2000, ASCE/SEI 7 and ACI 318. The study discusses seismic load estimation, structural regularity, load paths, moment-resisting frames, shear walls, dual systems, capacity design and ductile detailing. Particular attention is given to the strong-column–weak-beam principle, confinement of concrete, beam-column joints, lap-splice locations, shear design, diaphragm action and foundation interaction. The review finds that adequate member strength alone cannot ensure earthquake safety. Buildings require a regular structural configuration, controlled drift, sufficient deformation capacity and carefully detailed connections. Soft storeys, short columns, floating columns, torsional irregularity and poor reinforcement anchorage significantly increase vulnerability. Nonlinear analysis and performance-based design provide more realistic assessments for irregular, important and tall structures. The article concludes that effective seismic resistance results from the coordinated application of architectural planning, structural analysis, ductile detailing, quality construction and periodic inspection. Code compliance should be treated as a minimum requirement and must be supported by competent engineering judgment and site-specific evaluation.
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References
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