| 摘要 |
PROBLEM TO BE SOLVED: To provide an installation method for a columnar duct to enable improvement of the installation strength of the columnar article or pipe line to be installed and a load introduction reinforcing foundation capable of being formed in a short time irrespective of the foundation shape when the foundation forming a base is formed and capable of improving the installation strength of the installed columnar article or the pipe line. SOLUTION: A marker, a lighting tower, etc. are erected on the ground and a pile line such as a force feed pipe is installed. In this method, After the vicinity of the installation position is digged to form a digged section, a high rigid bottom disc is put on the digged section provided with a fill layer formed of a multilayer of backfilled earth on a bottom disc, a flat, an almost flat reticulated, or a latticed reinforcing material put between respective fill layers and having a large friction coefficient and tensile strength, a highly rigid upper disc on the uppermost or upper fill layer, a tension member connecting the upper disc and the bottom disc. Further, in the construction method, a compression force is actuated on the whole body of the fill layer through the tension member to form respective fill layers reaching from the high rigid upper disc to the bottom disc and the earth foundation is formed by integrally forming the reinforcing materials the columnar article or the pipe line is set on the upper disc or a hole with the columner article penetrated therein is formed on the upper disc to support the foundation for the article. COPYRIGHT: (C)2004,JPO&NCIPI
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