钢筋橡胶集料混凝土梁耗能能力及有限元分析

Capacity of Energy-consuming of Steel Reinforced Rubberized Concrete Beam and Finite Element Model

橡胶集料混凝土(Rubberized Concrete,简称RC)是近年来出现的一种混凝土,它是由废弃橡胶轮胎等废弃橡胶磨碎而成的橡胶颗粒作为混凝土材料成分的一种新型节能环保混凝土材料,具有低弹模、大变形、高阻尼、能量耗散多以及很好的抗裂性等优点,目前国内外的研究方向主要集中在基本材性,包括物理力学性能研究、能量耗散、耐久性等方面的研究,橡胶集料混凝土作为功能型材料,应用到土木工程中已有大量研究及工程案例,在橡胶集料混凝土中加入钢筋用于结构的研究少有报道,本文从结构基本构件(钢筋混凝土梁正截面弯曲)入手,在原有试验的基础上推导耗能能力,并进行非线性有限元分析。

Rubberized concrete is a new kind of concrete appeared in recent years. It is a kind of enemy-saving and environmental-protection concrete with crumb rubber as a constituent from discarded tires. It shows a characteristic of being high in ductility, enemy absorption, crack resistance and ultimate compressive failure strain. The research at home and abroad focuses on the basic Material Properties. It mainly includes the physical and mechanical properties, energy dissipation, durability and so on. Rubberized concrete, as functional materials, applied to civil engineering has a lot of research and engineering cases. But, studying on steel reinforced crumb rubber concrete for structure is seldom reported. This paper, based on cross-section bending experiments of beam, deduced the capacity of energy-consuming. This paper also established Non-linearity finite element model.