焦作新河岸坡防护工程混凝土力学试验研究

Experimental study on concrete mechanics of Jiaozuo New River bank slope project

为研究焦作新河岸坡防护工程混凝土材料物理损伤作用下的力学特征,设计浸水作用与受热作用两种物理环境,开展损伤后混凝土力学特征影响变化。水化作用对混凝土承载应力具有损伤效应,浸水时间愈长,对强度的削弱作用愈显著,但围压效应可抑制水化损伤作用。变形特征参数受水化、高温作用影响效应与强度参数一致,且混凝土延性变形随浸水时间延长而增大。该研究成果可为水利工程中物理损伤作用下混凝土力学试验提供参考。

In order to study the mechanical characteristics of concrete material in Jiaozuo New River bank slope protection project under physical damage, two physical environments of immersion and heating were designed, and the influence of concrete mechanical characteristics after damage was carried out. Hydration has a damage effect on the bearing stress of concrete, especially when the immersion time is longer, the weakening effect on the strength is more significant, but the confining pressure effect can inhibit the hydration damage. The effect of hydration and high temperature on deformation characteristic parameters is consistent with the strength parameters, and the ductile deformation of concrete increases with the extension of immersion time. This paper can provide a reference for the study of concrete mechanical test under physical damage in hydraulic engineering.