Effect of Axial Compression Ratio and Concrete Strength on Seismic Performance of Concrete Filled Steel Tube Beam-Column Joints

Abstract:

Based on finite element analysis o f concrete filled steel tube beam-column joints under the single axial compression ratio and concrete strength, further research was done to analyze the seismic performance of concrete filled steel tube beam-column joints under different axial compression ratio and concrete strength. Beam-column joint which is connected by bolts with welding extended steel sheets at the beam root was analyzed. The results show that with the increase of axial compression ratio, strength and stiffness degradation of the joint accelerated gradually. Axial compression ratio at 0.3, 0.4 are appropriate values for joints specimen, load-displacement hysteresis curve of joint specimens is relatively plump and shows good seismic performance. Chance of concrete strength also had effect on seismic performance of joint specimen, but in contrast it is not so obviously.

• Periodical: Applied Mechanics and Materials (Volumes 488-489)
• Pages: 704-707
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.488-489.704
• Online since: January 2014
• Authors: Ying Wang*, Miao Li, Jin Hua Xu, He Fan
• Keywords: Axial Compression Ratio, Concrete Filled Steel Tube Structure, Concrete Strength, Finite Element Analysis (FEA), Seismic Performance

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