Investigation on Ultimate Bearing Capacity of Recycled Aggregate Concrete-Filled Steel Tubular Short Columns under Axial Compressive Load

Abstract:

Based on the Unified Strength Theory(UST),the ultimate load calculation formula for the recycled aggregate concrete-filled steel tubular short columns is derived in this paper,in which the decrease of longitudinal stress because of the hoop tensile tension is considered. The influence of intermediate principal stress on the ultimate load is studied and the failure mechanism is also discussed. The results show that the intermediate principal stress have important effect on the ultimate load which increases with the strength parameter .Through the comparison between the experimental results and the calculating results obtained in this paper,the deviation is small,and it shows that the formula have significance in exerting material potential.

• Periodical: Advanced Materials Research (Volumes 160-162)
• Pages: 1205-1210
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.160-162.1205
• Online since: November 2010
• Authors: Zhao Qiang Zhang, Shu Lian Xiao, Jin Song Lei
• Keywords: Axial Compressive Load, Bearing Capacity, Recycled Aggregate Concrete-Filled Steel Tubular Columns, Unified Strength Theory

References

[1] Liu Shuhua, Leng Faguang. Technology of recycled aggregrate concrete. Bei Jing: China Building Material Industry Publishing House, (2007).

[2] Katz A. Properties of concrete made with recycled aggregate from partically hydrated old concrete. Cement and Concrete Research, 2003, 33 (5): 703-711.

DOI: 10.1016/s0008-8846(02)01033-5

[3] Topξu I B, ξ engel S. Properties of concretes produced with waste concrete aggregate. Cement and Concrete Research, 2004, 34 (8): 1307-1312.

DOI: 10.1016/j.cemconres.2003.12.019

[4] XIAO Jian-zhuang, LI Jia-bin, LAN Yang. Research on recycled aggregate concrete-A review. Concrete, 2003 (10): 17-20.

[5] Konno K, Sato Y, Kakuta Y, et al . Property of recycled concrete column encased by steel tube subjected to axial compression. Transactions of the Japan Concrete Institute, 1997, 19 (2): 231-238.

[6] Konno K, Sato Y, Ueda T, et al . Mechanical property of rRecycled concrete under lateral confinement . Transactions of the Japan Concrete Institute, 1998, 20 (3): 287-292.

[7] Yang Youfu. Discussion on several problems of mechanical behavior and design method of recycled concrete- filled steel tubular members. Industrial Construction, 2006, 36 (11): 1-5.

[8] Yang Youfu. Study on bearing mechanisms of recycled aggregate concrete- filled steel tubular members. Industrial Construction, 2007, 37 (12): 7-12.

[9] Wu Fengying, Yang Youfu. Preliminary research on behaviors of recycled concrete-filled steel tube columns. Journal of Fuzhou University(Natural Science), 2005, 33(Supp): 305-308.

[10] Yu Maohong. New system of strength theory. Xi'an: Xi'an Jiaotong University Press, (1992).

[11] Zhao Junhai. Strength theory and its engineering application. Bei Jing: Science Press, (2003).

[12] Qiu Changlong. Study on recycled concrete and analysis of mechanical properties of steel tube recycled concrete shot column. Southwest Jiaotong Universit, (2009).