Probabilistic Seismic Capacity Model for High Pier of CFST Composite Column

HUANG Zhitang; QIANG Shizhong; CUI Shengai

doi:10.3969/j.issn.0258-2724.2015.05.013

Volume 28 Issue 5

Oct. 2015

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Journal of Southwest Jiaotong University > 2015 > 28(5): 852-857.

HUANG Zhitang, QIANG Shizhong, CUI Shengai. Probabilistic Seismic Capacity Model for High Pier of CFST Composite Column[J]. Journal of Southwest Jiaotong University, 2015, 28(5): 852-857. doi: 10.3969/j.issn.0258-2724.2015.05.013

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HUANG Zhitang, QIANG Shizhong, CUI Shengai. Probabilistic Seismic Capacity Model for High Pier of CFST Composite Column[J]. Journal of Southwest Jiaotong University, 2015, 28(5): 852-857. doi: 10.3969/j.issn.0258-2724.2015.05.013

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Probabilistic Seismic Capacity Model for High Pier of CFST Composite Column

doi: 10.3969/j.issn.0258-2724.2015.05.013

Received Date: 16 Sep 2014
Publish Date: 25 Oct 2015

Abstract

Abstract

In order to assess the seismic performances of high pier of concrete-filled steel tube (CFST) composite column, curvature was chosen as the performance indicator. The whole eccentric compression process for section samples of CFST composite column was simulated by the Latin hypercube sampling (LHS) and the numerical analysis method. Based on damage patterns, 4 limit states of slight damage, moderate damage, severe damage and complete damage were defined and quantified. Cubic polynomial regression analyses for statistical characteristic values of curvature indicator as a function of axial force were carried out, and a probabilistic seismic capacity model for high pier of CFST composite column with axial force as the variable was built. The results show that the damage characteristics of reinforced concrete (RC) and CFST are shown by the dividing line of outer confined concrete damage. Curvature indicators of the4 damage limit states under different axial forces obey lognormal distributions, and their mean values decrease with the increase of axial force.
- CFST (concrete-filled steel tube) composite column,
- high pier,
- performance indicator,
- probabilistic seismic capacity

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Probabilistic Seismic Capacity Model for High Pier of CFST Composite Column

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