Optimization of Structural Design in Steel Buildings Based on the Site-Specific Design Spectra of the Mexico Seismic Regulations

Autor: Juan Antonio Ramos-Sánchez, Sergio A. Díaz, René Sebastián Mora-Ortiz, Gabriel Polanco-Sotomayor, Francisco Magaña-Hernández
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: Geosciences, Vol 14, Iss 2, p 32 (2024)
Druh dokumentu: article
ISSN: 2076-3263
DOI: 10.3390/geosciences14020032
Popis: Seismic risk management in urban areas requires accurate prediction of the expected seismic hazard. The seismic design standards in the world provide the seismic design spectra (DS). These are crucial for estimating seismic forces on a structure, are typically derived from theoretical models in deterministic or probabilistic seismic hazard studies, especially for bedrock soils. Characterizing soil dynamic amplification frequencies or periods is necessary to establish site-specific design spectra (DSsite). Geotechnical and geophysical studies, along with environmental vibration records, determine soil stratigraphy characteristic features and their dominant frequency or period. These parameters improve our understanding of seismic wave behavior from bedrock to surface soil during earthquakes. This article details the utilization of geotechnical, geophysical studies, and environmental vibration records to estimate DSsite in accordance with Mexican seismic regulation and examines the cost–benefit aspects of using the Dssite in optimizing the structural design of a medium-rise steel building in southeastern Mexico, characterized by soft soil and a moderate seismic hazard. The case study demonstrates an 18% cost savings in the structural elements of the building by employing the DSsite with more rational spectral ordinates for study site.
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