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Título del libro: 11th National Conference On Earthquake Engineering 2018, Ncee 2018: Integrating Science, Engineering, And Policy
Título del capítulo: Modifying seismic design provisions to compute story drifts of buildings on different soils

Autores UNAM:
MARIO EMILIO RODRIGUEZ RODRIGUEZ;

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Autores externos:

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Idioma:

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Año de publicación:
2018

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Palabras clave:

Architectural design; Building codes; Earthquakes; Engineering geology; Soils; Amplification factors; Chile earthquakes; Design provisions; Elastic analysis; Maximum displacement; Modification coefficient; Spectral displacement; Strong ground motion; Seismic design

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Resumen:

According to building codes in seismic areas, when computing the design story drift, , the deflection determined by an elastic analysis using reduced forces is multiplied by a deflection amplification factor (DAF). Typically, the specified values of this factor depend on the type of seismic force-resisting system, and in some codes these values are equal to the specified values of the response modification coefficient, R. Other codes, such as ASCE 7-10, for a specific seismic force-resisting systems, specified values of DAF are equal or smaller than the corresponding R factors. However, in general when defining these values, building codes make no distinction on the type of site soil. For strong ground motions such as those recorded in the 1985 Mexico City and the 2010 Chile earthquakes, spectral displacements computed with recorded ground motions on soft soil sites indicate that computed design story drifts using existing seismic design provisions, which are based on the so-called ?equal displacement rule?, might be misleading. In some period ranges of systems on soft soils, the spectral displacements computed using the ?equal displacement rule? underestimate the maximum displacements of the 1DOF system responding in the inelastic range, which indicate that values of DAF are dependent on the site soil. © 11th National Conference on Earthquake Engineering 2018, NCEE 2018: Integrating Science, Engineering, and Policy. All rights reserved.

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Entidades citadas de la UNAM:

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Fuente:


ISBN:
9781510873254
Editorial:
Earthquake Engineering Research Institute

Tipo de producto:
Conference Paper