Experimental Study on Calculation Methods for Short-term Cracks in High-strength Reinforced Concrete Beams

• DOI: 10.2174/1874149501711010187
• Publication Date: 2017-04-12T07:34:14Z
• Authors: Ruliang Zheng; Degao Tang; Yulong Xue; Zhen Liao
• Keywords: Eurocode

High-strength steel has increasingly become widely used among various engineering practices, but the relevant provisions of codes lag behind its development. Six sets experiments on simple supported beams reinforced with HTB600 and HTB700 rebars subject to bending loading were conducted in this study 1) investigate conditions crack development, 2) contrast calculating modes short-term width between Chinese European concrete codes, 3) analyze applicability precision pertaining high-strength reinforcement beams. According research, when calculation formulae obtained from calculate average spacing beams, error relative that experiment reached approximately 20%. Based this, a revised formula for is proposed article, results these calculations align experiment. In addition, also demonstrates maximum cracking calculated by adhering Eurocode standards yielded no significant deviation as compared experimental results. However, owing difference exceeding 20% being observed under results, methods need be further improved better rebars.