| 摘要 |
PROBLEM TO BE SOLVED: To estimate a ground settlement at the periphery of an excavation line in order to analyze an influence on nearby structures resulting from a tunnel excavation. SOLUTION: The method comprises a process in which the structure of a target ground for the analysis and close structures are defined and an analysis point requiring a settlement is set, a process for determining a crossing directional settlement curved line data from the settlement in the crossing direction on an excavation line obtained by the use of two-dimensional FEM analysis, a process for selecting the vertically crossing directional curved line data measured in the construction work similar to the earth quality condition of the tunnel excavation of analysis target, the earth covering and construction work from the memories wherein the vertically crossing directional curved line data measured in the past construction work is stored in advance, a process for determining the three-dimensional settlement curved face data from the crossing directional settlement curved line data and the vertically crossing directional curved line data, and a process for calculating the settlement amount at the analyzing point while moving the three-dimensional settlement curved face data on the excavation line. COPYRIGHT: (C)2006,JPO&NCIPI
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