钢管混凝土斜柱转换结构模型振动台试验研究

Translated title of the contribution: Shaking Table Test for Structural Model with Inclined Column Transfer System

Chun Yang, Hongwei Wu, Tingwei Mo, Jian Cai, Yi Wu, Zhiliang Zuo, Qingjun Chen, Guangbin Pan

Research output: Contribution to journalArticleScientificpeer-review

Abstract

To study the seismic performance of a super high-rise building, a shaking table test with a geometrical scale of 1/35 was carried out. Part of frames in the tower structure of the building are supported by two concrete-filled steel tubular (CFST) mega frame columns with duplex-story height, which are not connected to the first 6 floors. The inclined CFST column transfer structure is arranged on the 7th to 11th floors. Through experiments, failure modes, natural vibration period, story drift, and torsional responses of the structural model were studied first. Then, a numerical analysis of the elastic-plastic seismic response of the original structure was carried out via PERFORM-3D software. Results show that torsion effects were significant because of the asymmetric plane arrangement and the inadequate torsional stiffness of the tower. When the actual peak acceleration on the shake table surface was close to the value of the rare earthquake condition (i.e., 470 cm/s2), the torsional failure occurred in the tower. In this condition, except for very few stories, the story-drift angle of each floor was still smaller the limit value 1/100 of the elastic-plastic story-drift angle. Under all load conditions, the strains of CFST frame columns and inclined ones of the transfer areas stayed elastic. The analysis results are in good agreement with those of experiments.
Translated title of the contributionShaking Table Test for Structural Model with Inclined Column Transfer System
Original languageChinese (Traditional)
Pages (from-to)517-525
Number of pages9
JournalXinan Jiaotong Daxue Xuebao/Journal of Southwest Jiaotong University
Volume56
Issue number3
DOIs
Publication statusPublished - 2021

Keywords

  • Concrete-filled steel tube
  • High-rise building
  • Inclined column transfer structure
  • Seismic performance
  • Shaking table test

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