PSEUDO-DYNAMIC TEST OF CFST BRIDGE PIER UNDER DIFFERENT GROUND EXCITATIONS

Authors

  • Raghabendra Yadav Fuzhou University, College of Civil Engineering, Fuzhou-350116, Fujian China
  • Baochun Chen Fuzhou University, College of Civil Engineering, Fuzhou-350116, Fujian China
  • Huihui Yuan Fuzhou University, College of Civil Engineering, Fuzhou-350116, Fujian China
  • Zhibin Lian Fuzhou University, College of Civil Engineering, Fuzhou-350116, Fujian China

DOI:

https://doi.org/10.14311/CEJ.2018.01.0008

Keywords:

CFST-Builtup Pier, Pseudo-Dynamic, Time History, Seismic Performance, Bridge Pier

Abstract

The dynamic testing of large-scale structures continues to play a significant role in earthquake engineering research. The pseudo-dynamic test (PDT) is an experimental technique for simulating the earthquake response of structures and structural components in time domain. A Concrete Filled Steel Tube (CFST) built-up pier is a modified form of CFST laced column in which CFST members are connected with RC web in longitudinal direction and with steel tube in transverse direction. For this study, a CFST built-up pier is tested under seven different earthquake time histories having scaled PGA of 0.05g. From the experiment acceleration, velocity, displacement and load time histories are observed. The pier experienced maximum acceleration due to Imperial Valley earthquake and minimum due to Wenchuan earthquake. For the Imperial Valley earthquake the acceleration is magnified by 17 times while for the Wenchuan earthquake the acceleration is magnified by 10 times. The frequency of the pier is found to be 1.41 Hz. The result shows that this type of pier has excellent static and earthquake resistant properties.

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Author Biography

Huihui Yuan, Fuzhou University, College of Civil Engineering, Fuzhou-350116, Fujian China

The dynamic testing of large-scale structures continues to play a significant role in earthquake engineering research. The pseudo-dynamic test (PDT) is an experimental technique for simulating the earthquake response of structures and structural components in time domain. A Concrete Filled Steel Tube (CFST) built-up pier is a modified form of CFST laced column in which CFST members are connected with RC web in longitudinal direction and with steel tube in transverse direction. For this study, a CFST built-up pier is tested under seven different earthquake time histories having scaled PGA of 0.05g. From the experiment acceleration, velocity, displacement and load time histories are observed. The pier experienced maximum acceleration due to Imperial Valley earthquake and minimum due to Wenchuan earthquake. For the Imperial Valley earthquake the acceleration is magnified by 17 times while for the Wenchuan earthquake the acceleration is magnified by 10 times. The frequency of the pier is found to be 1.41 Hz. The result shows that this type of pier has excellent static and earthquake resistant properties.

References

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connections

Tsai k. C. and Hsiao P. C., 2008, Pseudo-dynamic test of a full-scale CFT/BRB frame—Part II: Seismic performance of buckling-restrained braces and connections, Earthquake Engineering and Structural Dynamics, Earthquake Engineering Structural Dynamics 2008;37:1099–1115.

Yadav R., Chen B., Yuan H. and Lian Z., 2017, Experimental study on seismic performance of latticed CFST-RC column connected with RC web, Thin-Walled Structures, https://doi.org/10.1016/j.tws.2017.11.043.

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Published

2018-04-30

How to Cite

Yadav, R., Chen, B., Yuan, H., & Lian, Z. (2018). PSEUDO-DYNAMIC TEST OF CFST BRIDGE PIER UNDER DIFFERENT GROUND EXCITATIONS. Stavební Obzor - Civil Engineering Journal, 27(1). https://doi.org/10.14311/CEJ.2018.01.0008

Issue

Vol. 27 No. 1 (2018)

Section

Articles

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