Experimental Research of Bending Capacity of Normal Section of Steel Fiber Reinforced Concrete Wall-Beams Simply Supported

Abstract:

Because the joists in the wall-beams are in eccentric tension during work and the concrete tensile strength is low, the bending capacity of normal section of wall-beams is not too large. Steel fibers mixed into the concrete, playing enhancement and crack-resistance roles would lead to changes in the nature of concrete materials so that it is impossible to fully use the existing research results of ordinary concrete wall-beams simply supported when studying bending behavior of normal section of steel fiber reinforced concrete wall-beams simply supported. Therefore, it is necessary to do pilot studies on bending behavior of normal section of steel fiber reinforced concrete wall-beams simply supported. Based on the vertical static load test of 12 steel fiber reinforced concrete wall-beams simply supported specimens under different fiber volume ratio conditions, the strains of steel and concrete, cracking load, failure load and development situation in the cracks were tested while working characteristics of steel fiber reinforced concrete wall-beams simply supported were studied. This paper discussed the effect of fiber volume ratio on cracking moment and ultimate moment of steel fiber reinforced concrete wall-beams simply supported, which shows that the optimum mixing amount of steel fiber is 1.2%. The conclusion is of great significance in both theory and engineering practice, and it helps to guide the application of practical engineering.

• Periodical: Applied Mechanics and Materials (Volumes 193-194)
• Pages: 1365-1370
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.193-194.1365
• Online since: August 2012
• Authors: Su Qi, Ye Zhang, Shu Hao Liu, Xiong Song
• Keywords: Bearing Capacity, Normal Section Bending, Steel Fiber (SF), Wall-Beams Simply Supported

References

[1] Southeast University, Tongji University, Tianjin University, Concrete structure principle, China building industry press. 2004.

[2] Gong S X, Zhou Y, Chen L F, et al. Analysis of inner forces and simplification of calculation for wall-beams[J]. Architectural structure, 2001(9):17~20.

[3] Gong S X. Masonry structure design code for design of wall beam[J]. Architectural structure, 2003 (6): 62~72.

[4] Gong S X, Li X, Wu C X et al. Box girder of a wall, finite element analysis and experimental research capacity calculation[J]. Architectural Structure, 2001 (9): 11~16.

[5] Gong S X, Tang K Q. The experimental research and finite element analysis on working characteristics and calculation method of simply supported wall-beam[J]. Zhengzhou industrial university journal, 1988, 9(3): 1~13.

[6] Lu N Y; Feng M S. Design of Composite Action Brick and Reinforced Concrete Wall Beams[J]. Joumal of Building Structure, 1980(3);36~42.

[7] Chengkui Huang. Fiber Reinforced Concrete Structure [M]. Beijing: Mechanical Industry Press, 2004. 14~23, 64.

[8] Jianqiang Wang, Yonggang Ding, Jianfeng Yao. Experimental study on seismic performance of frame-supported multi-ribbed continuous wall beam with opening[J]. Journal of XI'AN university of architecture & technology(natural science edition), 2009, 41(4): 496~501.

[9] Su Qi, Nian Liu, Songbai Jiang, Dejun Zhou. Experimental Research of Mechanical Properties of Steel Fiber Reinforced concrete wall-Beams Simply Supported[J]. Advanced Engineering Research，2010(2); 31~3.

DOI: 10.4028/www.scientific.net/amr.446-449.3355