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Dynamic Time History Analysis for Mid-rise Cold-formed Thin-walled Steel Residential Building System(PDF)

《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

Issue:
2018年05期
Page:
142-151
Research Field:
Publishing date:

Info

Title:
Dynamic Time History Analysis for Mid-rise Cold-formed Thin-walled Steel Residential Building System
Author(s):
GUAN Yu ZHOU Xu-hong SHI Yu YAO Xin-mei
School of Civil Engineering, Chang‘an University
Keywords:
cold-formed thin-walled steel mid-rise residential building seismic performance dynamic time history analysis numerical simulation
PACS:
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DOI:
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Abstract:
The spatial models of mid-rise cold-formed thin-walled steel residential building were established based on the shaking table test results of three-storey cold-formed thin-walled steel building verified by finite element method. In order to investigate seismic performance of midrise building, the first three natural frequencies and vibration modes as well as acceleration response, displacement response and horizontal seismic shear under bidirectional earthquake action were conducted on spatial finite element models. The results show that the fundamental frequency calculation method recommended in Technical Specification for Low-rise Cold-formed Thin-walled Steel Buildings is appropriate for mid-rise cold-formed thinwalled steel structural system. The acceleration amplitude, relative displacement and maximum shear-weight ratio of each floor raise with the increase of seismic-wave acceleration amplitude, while the peak acceleration amplification coefficient of each floor decreases. Moreover, the peak acceleration amplification coefficient, relative displacement and maximum shear weight ratio of each floor raise with the increase of structural height. The horizontal seismic shear force and maximum story-drift ratio of mid-rise cold-formed thin-walled steel structural system in X and Y direction under frequently earthquake and rare earthquake are satisfied with the requirement of Code for Seismic Design of Buildingswhich demonstrating that this structural system [JP2]has better seismic behavior.

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Last Update: 2018-09-03