Structural analysis and evaluation of actual PC bridge using 950 keV/3.95 MeV X-band linacs

8th International Particle Accelerator Conference

Takeuchi, H.^1 ; Yano, R.^1 ; Ozawa, I.^1 ; Mitsuya, Y.^1 ; Dobashi, K.^1 ; Uesaka, M.^1 ; Kusano, J.^2 ; Oshima, Y.^3 ; Ishida, M.^3

Department of Nuclear Engineering and Management, School of Engineering, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, Japan^1

Accuthela Inc., 2-8-22 Kurigi, Asao-ku, Kawasaki, Kanagawa, Japan^2

Public Works Research Institute, 1-6 Minamihara, Tsukuba, Ibaraki, Japan^3

关键词: Aging problem;    Analysis and evaluation;    Bridge inspection;    Economic growths;    Internal state;    On-site inspection;    Parallel motion;    X-ray sources;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/874/1/012105/pdf
DOI  :  10.1088/1742-6596/874/1/012105

来源: IOP

【 摘 要 】

In Japan, bridges constructed during the strong economic growth era are facing an aging problem and advanced maintenance methods have become strongly required recently. To meet this demand, we develop the on-site inspection system using 950 keV/3.95 MeV X-band (9.3 GHz) linac X-ray sources. These systems can visualize in seconds the inner states of bridges, including cracks of concrete, location and state of tendons (wires) and other imperfections. At the on-site inspections, 950 keV linac exhibited sufficient performance. But, for thicker concrete, it is difficult to visualize the internal state by 950 keV linac. Therefore, we proceeded the installation of 3.95 MeV linac for on-site bridge inspection. In addition, for accurate evaluation, verification on the parallel motion CT technique and FEM analysis are in progress.