Experimental Study on Working Performance of Axially Loaded Short Columns with Micro-Expansive Concrete Filled Steel Tube

Abstract:

There are changes in material properties of concrete when compared axially loaded short columns with micro-expansive concrete filled steel tube with axially loaded short columns with common reinforced concrete and these changes will inevitably lead to the change of axially loaded short columns with micro-expansive concrete filled steel tube in performance. It is impossible to fully use the existing research results of axially loaded short columns with common reinforced concrete; therefore, it is necessary to do experimental research on the working performance of axially loaded short columns with micro-expansive concrete filled steel tube. This paper studied the hydration heat, self-stress and failure load according to the test conditions of the 15 axially loaded short columns with micro-expansive concrete filled steel tube specimen; determined the optimum mix amount of axially loaded short columns with micro-expansive concrete filled steel tube and proposed the increase rate of ultimate failure load of axially loaded short columns with micro-expansive concrete filled steel tube compared with axially loaded short columns with common reinforced concrete. This will facilitate the practical application of engineering.

• Periodical: Advanced Materials Research (Volumes 424-425)
• Pages: 1228-1232
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.424-425.1228
• Online since: January 2012
• Authors: Su Qi, Jin Xing He, Nian Liu, Wei Wu
• Keywords: Hydration Heat, Limit Bearing Capacity, Micro-Expansive Concrete Filled Steel Tube, Self-Stress

References

[1] Tang Guanzuo, Zhao Bingquan: Study on the Fundamental Structural Behavior of Concrete Filled Steel Tubular Columns[J]. Journal of Building Structures, 1982, NO. 1.

[2] Zhong Shantong, Wang Yongchun: Research on Analytical Theory of Axial Compression Member of Concrete Filled Steel Tubes[J]. Journal of Building Structures, 1980, NO. 1.

[3] Zhong Shantong: Research on the Calculation of Load Bearing Capacity of Concrete-Filled Steel Tubular Columns under Eccentric Loading[J]. Journal of Building Structures, 1988, NO. 4.

[4] Han Linhai: The State of Current Researches and Applications of Concrete Filled Steel Tubular Structures in China[J]. Industrial Construction, 1995, NO. 1.

[5] Zhang Song, Zheng Xinmin: On Finite Elementary Analysis of Steel Pipe Concrete's Pedestal[J]. Shanxi Architecture, 2010: 55.

[6] Zhou Zhihong, Jiang Dong, Chen Hongliang: Finite Element Model Updating of Concrete-Filled Steel Tubular Arch Bridge[J]. Journal of Nanjing University of Aeronautics & Astronautics, 2010: 793-795.