Non-Destructive Bond Stress Evaluation of Bending and Shear Deformed Reinforced Concrete Structure using Neutron Diffraction
Non-Destructive Bond Stress Evaluation of Bending and Shear Deformed Reinforced Concrete Structure using Neutron Diffraction
复制标题
使用中子衍射无损评估弯曲和剪切变形钢筋混凝土结构的粘结应力
DOI：
10.11396/jjsndi.67.180
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发表时间：
2018
期刊：
影响因子：
--
通讯作者：
川崎 卓郎
中科院分区：
文献类型：
--
作者：
鈴木 裕士;ハルヨ ステファヌス;楠 浩一;佐竹 高祐;兼松 学;小山 拓;丹羽 章暢;椛山 健二;向井 智久;川崎 卓郎
采用中子衍射法测量钢筋混凝土梁中二维分布钢筋的应力分布，研究钢筋与混凝土之间的粘结强度。在固定的测量配置，没有任何样品旋转，通过使用一个简单的测量技术，建议在以前的实验中获得的技术知识的基础上，在混凝土中嵌入的主钢筋和横向箍筋的应力分布成功地测量。钢筋混凝土梁试样的弯曲和剪切断裂行为进行了预测，通过比较中子衍射测量相对于施加的应力，与固定在混凝土表面的应变片测量的宏观变形的应力分布的变化。在这项研究中，它被发现，中子衍射技术可以是一个有用的技术，以评估不仅锚固性能，但也钢筋混凝土梁的弯曲性能。
The bond strength between rebar and concrete under bending moment was investigated by measuring the stress distribution in the two-dimensionally distributed rebars embedded in the reinforced concrete (RC) beam using neutron diffraction. The stress distributions in both of the main rebar and the transverse stirrups embedded in concrete were successfully measured at the fixed measurement configuration without any sample rotations, by using a simple measurement technique suggested based on the technical knowledge obtained in the previous experiments. The bending and shear fracture behavior of the RC beam specimen was predicted by comparing changes in the stress distribution in the rebars measured by neutron diffraction with respect to the applied stress, with the macroscopic deformation measured by strain gauges fixed on the concrete surface. In this study, it was found that the neutron diffraction technique can be a useful technique to evaluate not only the anchorage performance but also the bending behavior of the RC beam.