| 摘要 |
PROBLEM TO BE SOLVED: To provide a fixing structure of a guide pipe for an earth retaining wall deformation measuring instrument allowing the weight reduction of protective members, simplification of fixing work of the guide pipe and protective members and shortening of time. SOLUTION: The guide pipe 20 for a displacement measuring instrument is installed in the longitudinal direction of a core material 10 of an underground continuous wall in the form of projecting from the lower end of the core material 10, and the protective members 30 are installed to protect the guide pipe 20 from impact in erection. The guide pipe 20 and the protective members 30 are fixed by fastening and fixing by bolts B and nuts N. The protective members 30 are formed of two L-shaped steel members, and the guide pipe 20 is fixed clamped by the protective members 30. COPYRIGHT: (C)2004,JPO&NCIPI
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