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Seismic performance-based assessment of tunnel form building subjected to near- and far-fault ground motions

Seismic performance-based assessment of tunnel form building subjected to near- and far-fault... Abstract Existence of pulse at the beginning of the near-fault ground motions with forward directivity produces substantial amount of energy in a short period of time, which may cause brittle behavior in structures affected by a sudden shock. Despite increasing mass constructions of tunnel form buildings (TFBs) all over the world, which may be located in near-fault regions, the lack of comprehensive and cogent investigation related to their seismic behavior is evident. This study is devoted to investigate the seismic performance of 5- and 10-story TFBs subjected to near- and far-fault ground motions through performing incremental dynamic analysis. In addition, their seismic responses considering two design hazard levels under both near- and far-fault ground motions are discussed. Results illustrate that with increasing the construction height and seismic intensity, the influence of directivity on the structural responses including story shear force, drift and damage get more intensified. In comparison with far-fault ground motions, the probability of reaching structural elements to preliminary damage levels is increased up to 20%. It appears in regions with high seismicity, existence of pulse with forward directivity in ground motions decreases structural reliability in high-rise TFBs at predefined performance objectives. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png "Asian Journal of Civil Engineering" Springer Journals

Seismic performance-based assessment of tunnel form building subjected to near- and far-fault ground motions

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Publisher
Springer Journals
Copyright
2018 Springer International Publishing AG
ISSN
1563-0854
eISSN
2522-011X
DOI
10.1007/s42107-018-0009-4
Publisher site
See Article on Publisher Site

Abstract

Abstract Existence of pulse at the beginning of the near-fault ground motions with forward directivity produces substantial amount of energy in a short period of time, which may cause brittle behavior in structures affected by a sudden shock. Despite increasing mass constructions of tunnel form buildings (TFBs) all over the world, which may be located in near-fault regions, the lack of comprehensive and cogent investigation related to their seismic behavior is evident. This study is devoted to investigate the seismic performance of 5- and 10-story TFBs subjected to near- and far-fault ground motions through performing incremental dynamic analysis. In addition, their seismic responses considering two design hazard levels under both near- and far-fault ground motions are discussed. Results illustrate that with increasing the construction height and seismic intensity, the influence of directivity on the structural responses including story shear force, drift and damage get more intensified. In comparison with far-fault ground motions, the probability of reaching structural elements to preliminary damage levels is increased up to 20%. It appears in regions with high seismicity, existence of pulse with forward directivity in ground motions decreases structural reliability in high-rise TFBs at predefined performance objectives.

Journal

"Asian Journal of Civil Engineering" – Springer Journals

Published: Jan 1, 2018

Keywords: Civil Engineering; Building Materials; Sustainable Architecture/Green Buildings

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