Evaluation of the Floor Acceleration Amplification Demand of Instrumented Buildings

The floor acceleration amplification (FAA) factor is one of the most critical parameters in computing the equivalent seismic force of nonstructural component (NC). To evaluate the heightwise FAA distribution profile, the recorded acceleration response of the instrumented buildings was analyzed using...

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Main Authors: Baofeng Huang, Wensheng Lu
Format: Article
Language:English
Published: Wiley 2021-01-01
Series:Advances in Civil Engineering
Online Access:http://dx.doi.org/10.1155/2021/7612101
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author Baofeng Huang
Wensheng Lu
author_facet Baofeng Huang
Wensheng Lu
author_sort Baofeng Huang
collection DOAJ
description The floor acceleration amplification (FAA) factor is one of the most critical parameters in computing the equivalent seismic force of nonstructural component (NC). To evaluate the heightwise FAA distribution profile, the recorded acceleration response of the instrumented buildings was analyzed using the California Strong Motion Instrumentation Program (CSMIP) database. The FAA demands for three groups of buildings consisting of reinforced concrete, steel, and masonry buildings were analyzed. In each group, the buildings were classified into four subgroups according to their heights. Parabolic distribution profiles were suggested that could envelop most of the FAA data, as demonstrated by the processed results. An earthquake experience-based importance factor was suggested in terms of the percentage of the enveloped records. The obtained FAAs at the roof were generally larger than those in other levels. The percentile distributions of the roof acceleration amplification (RAA) were computed. The results showed that the roof FAA was underestimated in ASCE 7-16. The magnitudes of the FAA and the RAA correlated to the fundamental period of the building, which was considered by classifying the buildings according to the period ranges. The RAA profile against the period was obtained from a regression analysis. The developed FAA profile is expected to be useful in the seismic design of NCs, and it is expected to be adopted in future code provisions.
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spelling doaj-art-d7e6ae755fbf4ad39141f5b780b790f22025-02-03T06:10:46ZengWileyAdvances in Civil Engineering1687-80861687-80942021-01-01202110.1155/2021/76121017612101Evaluation of the Floor Acceleration Amplification Demand of Instrumented BuildingsBaofeng Huang0Wensheng Lu1College of Civil Engineering, Shanghai Normal University, Shanghai, ChinaCollege of Civil Engineering, Tongji University, Shanghai, ChinaThe floor acceleration amplification (FAA) factor is one of the most critical parameters in computing the equivalent seismic force of nonstructural component (NC). To evaluate the heightwise FAA distribution profile, the recorded acceleration response of the instrumented buildings was analyzed using the California Strong Motion Instrumentation Program (CSMIP) database. The FAA demands for three groups of buildings consisting of reinforced concrete, steel, and masonry buildings were analyzed. In each group, the buildings were classified into four subgroups according to their heights. Parabolic distribution profiles were suggested that could envelop most of the FAA data, as demonstrated by the processed results. An earthquake experience-based importance factor was suggested in terms of the percentage of the enveloped records. The obtained FAAs at the roof were generally larger than those in other levels. The percentile distributions of the roof acceleration amplification (RAA) were computed. The results showed that the roof FAA was underestimated in ASCE 7-16. The magnitudes of the FAA and the RAA correlated to the fundamental period of the building, which was considered by classifying the buildings according to the period ranges. The RAA profile against the period was obtained from a regression analysis. The developed FAA profile is expected to be useful in the seismic design of NCs, and it is expected to be adopted in future code provisions.http://dx.doi.org/10.1155/2021/7612101
spellingShingle Baofeng Huang
Wensheng Lu
Evaluation of the Floor Acceleration Amplification Demand of Instrumented Buildings
Advances in Civil Engineering
title Evaluation of the Floor Acceleration Amplification Demand of Instrumented Buildings
title_full Evaluation of the Floor Acceleration Amplification Demand of Instrumented Buildings
title_fullStr Evaluation of the Floor Acceleration Amplification Demand of Instrumented Buildings
title_full_unstemmed Evaluation of the Floor Acceleration Amplification Demand of Instrumented Buildings
title_short Evaluation of the Floor Acceleration Amplification Demand of Instrumented Buildings
title_sort evaluation of the floor acceleration amplification demand of instrumented buildings
url http://dx.doi.org/10.1155/2021/7612101
work_keys_str_mv AT baofenghuang evaluationoftheflooraccelerationamplificationdemandofinstrumentedbuildings
AT wenshenglu evaluationoftheflooraccelerationamplificationdemandofinstrumentedbuildings