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Elastoplastic Dynamic Analysis and Damage Evaluation of Reinforced Concrete Structures Based on Time Histories

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Publicado en:Buildings vol. 15, no. 6 (2025), p. 971
Autor principal: Lin, Huangbin
Publicado:
MDPI AG
Materias:
Earthquakes
Structural engineering
Elastoplasticity
Deformation
Concrete
Concrete structures
Cumulative damage
Damage assessment
Energy
Hysteresis
Ground motion
Structural damage
Realism
Energy dissipation
Reinforced concrete
Seismic design
Seismic waves
Equations of motion
Seismic response
Structural response
Earthquake damage
Retrofitting
Structural members
Degrees of freedom
Seismic engineering
Acceso en línea:Citation/Abstract
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Resumen:In this study, the impact of seismic time histories (STHs) on structural damage was examined, focusing on maximum elastoplastic displacement (<inline-formula>δmax</inline-formula>) and cumulative hysteretic energy (<inline-formula>Eh</inline-formula>). A specialized STH Damage Analysis Program (STHDAP) was developed to create a deformation energy time-history damage model, accounting for the behavior of hysteretic restoring force models under various loading and motion conditions. An elastoplastic motion equation, based on uniform stiffness and load parameters (<inline-formula>K¯</inline-formula> − <inline-formula>P¯</inline-formula>), was formulated to calculate cumulative <inline-formula>Eh</inline-formula> during elastoplastic time histories in a single-degree-of-freedom (SDOF) system. The computational method integrates time series and damage values (<inline-formula>D(t)</inline-formula>), enabling detailed analysis of structural responses, energy dissipation, and damage evaluation using seismic waves from the El Centro, Tri-treasure, and TianjinNS earthquakes. The results revealed that cumulative damage in similar structural members increased progressively with varying amplitudes and patterns, corresponding to the initial stages of ground motion. The STHDAP offers a comprehensive view of structural damage evolution in elastoplastic time histories. The deformation energy damage model facilitates the evaluation of elastoplastic damage in high-strength reinforced concrete structures under ground motion, providing valuable insights for performance-based seismic design and retrofitting strategies in structural engineering.
ISSN:2075-5309
DOI:10.3390/buildings15060971
Fuente:Engineering Database