Evaluation of Track Irregularity on Element Jacking in Under Railway
Yukinori KOYAMA Yoshiyuki KOJIMA Noriyuki OKANO Mitsuru SHIMIZU Toyohiro ANDO
Track irregularity surely occurs in construction under railway. Therefore, we measured in-situ Shonai-Shinjo Viaduct(JR Tokaido Line: Pipe-roof Method), and Tokyo Metroporitan planned road Viaduct(JR Yokohama Line: URT Method). The measured items are track irregularity, ground displacement jacking with overburden, Young's modulus and Poisson's ratio of ground,etc. as parameters. In this paper, We propose the conditions permitting speed up, depending on the results of the measurements and analysis.