首页> 外文会议>International symposium on rockburst and seismicity in mines >MODEL FOR ROCK-CONCRETE-LIKE MATERIAL CRACKING DUE TO CORROSION EXPANSION OF REBAR AND UNIFORM SHEAR AT INFINITY
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MODEL FOR ROCK-CONCRETE-LIKE MATERIAL CRACKING DUE TO CORROSION EXPANSION OF REBAR AND UNIFORM SHEAR AT INFINITY

机译:岩石混凝土材料裂缝模型由于钢筋的腐蚀膨胀和均匀剪切而无限

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The failure mechanism of rock-concrete-like material due to rebar corrosion and uniform shear at infinity is investigated. Based on the series expansion technology in the complex potential theory established by Muskhehshvili, the complex stress functions can be established. Then, in conjunction with the principle of superposition, the expression of tangential stress in rock-concrete-like material may be analytically deduced. Furthermore, by considering Faraday's equation, the equation of the time of rock-concrete-like material cracking due to rebar corrosion under transverse seismic response is obtained. It is found that the applied shear at infinity may accelerate the initiation of cracks. The existence of corrosion product can change the location of cracking. The ratio of the shear modulus between the reinforced bar and the rock-concrete-like material has little effect on the initiation of cracking. The possibility of rock-concrete-like material cracking increases with the increase of the relative corrosion depth.
机译:研究了由于钢筋腐蚀引起的岩石混凝土状材料的故障机理,无穷大的均匀剪切进行了研究。基于Muskhehshvili建立的复杂潜在理论的系列扩展技术,可以建立复杂的压力功能。然后,与叠加原理结合,可以在分析岩石混凝土状材料中切向应力的表达。此外,通过考虑法拉第方程,获得了在横向地震反应下由于钢筋腐蚀引起的岩石混凝土裂缝的时刻。发现无限远的施加剪切可以加速裂缝的启动。腐蚀产品的存在可以改变开裂的位置。增强杆和岩石混凝土状材料之间的剪切模量的比率对开裂的开始几乎没有影响。岩石混凝土状材料裂化的可能性随着相对腐蚀深度的增加而增加。

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