橡胶集料钢筋混凝土梁受弯性能初探

Performance of reinforced crumb rubber concrete bended beam

本文根据橡胶集料混凝土比普通混凝土延性好、应变大、抗裂性能强、吸收能量高等特征,基于普通混凝土的理论基础,对橡胶集料混凝土压应力-压应变曲线进行了修正和拓展,初步探讨了橡胶集料钢筋混凝土梁正截面受弯承载力的基本性能,给出了该曲线关键点的数值取值范围,本文同时给出在橡胶集料混凝土极限压应变取0.006时,相同条件下,橡胶集料钢筋混凝土梁与普通钢筋混凝土梁正截面受弯承载力的设计算例。

According to the characters of crumb rubber concrete,such as excellent ductility,higher strain,higher crack resistance,absorbing more energy than plain concrete,and based on plain concrete,the curve of compression stress-strain is amended.The bearing capacity on right section of the crumb rubber concrete bended beam is briefly analyzed and it shows the amount range of the key point.At the same time,a design example is given about two types of the beam under the same conditions when the limit compressive strain of crumb rubber concrete is 0.006.