Unified Approach for Evaluation of Shear Strength and Ultimate Deformation of Concrete Members Reinforced with Various Materials

本研究中实验和数值分析所获得的整合摘要如下：·预测碳连续纤维柔性强化的断裂强度（C-CFFR）在弯曲部分和在弯曲部分预测C-CFFR在弯曲部分的转移张力力的模型。三种尺寸有限的元素分析，在提议的强度相等和力量转移模型中引入的C-CFFR，可以预测在实验中观察到的C-CFFR的机械属性。它被观察到，由于多醋酸连续纤维柔性再灌注（P-CFFR）的混凝土柱的最大变形，而蒂再灌注比钢蒂再灌注柱的体积比更大。这是因为P-CFFR即使在最大变形中也没有切割，因为P-CFFR也可以在核心混凝土中安排。P-CFFR应变的预测公式是根据实验结果提出的。用于连续纤维板之间接口和混凝土的粘合压力滑动关系的统一模型被提议用于用连续纤维板重新输入混凝土成员的有限元素分析。基于对被提交给唯一张力的连续纤维板的强化混凝土棱镜的有限元素分析，发现混凝土张力硬度大于没有连续纤维板的情况。根据需要对强化混凝土成员的剪切张力强度进行精确预测的命令，有必要进行有限的元素分析，以预测剪切和通过各种材料重新输入混凝土成员的最大变形，这是必要的模型，精确地将力量转移到主要剪切裂缝上。

The summary of conclusions obtained by experimental and numerical analyses in this study is as follows :・The equation to predict the fracturing strength of Carbon Continuous Fiber Flexible Reinforcement (C-CFFR) at bent portion and the model to predict the transferred tensile force by C-CFFR at bent portion were proposed. Three dimensional finite element analyses, in which the proposed strength equation and the force transfer model for C-CFFR were introduced, could predict the mechanical properties of C-CFFR observed in the experiment.・It was observed that the ultimate deformation of concrete columns with Polyacetal Continuous Fiber Flexible Reinforcement (P-CFFR) as tie reinforcement was greater than that of columns with steel tie reinforcement whose volume ratio is the same. This is because P-CFFR did not fracture even at ultimate deformation and because P-CFFR can be arranged inside the core concrete. The prediction formulae for P-CFFR strains were proposed based on the experimental results.・The unified model for bond stress-slip relationship at the interface between continuous fiber sheet and concrete was proposed for finite element analysis of concrete members reinforced with continuous fiber sheet. Based on the finite element analysis of reinforced concrete prism with continuous fiber sheet subjected to uniaxial tension, it was found that the concrete tension stiffness is greater than the case without continuous fiber sheet.・In order to obtain the precise prediction of the shear tension strength of reinforced concrete members, which is necessary for finite element analysis to predict shear and ultimate deformation of concrete members reinforced with various materials, it is necessary to model precisely the force transfer along the major shear crack.