| 摘要 |
PROBLEM TO BE SOLVED: To provide a supporting structure and a construction method for a bridge capable of eliminating the need of excavating all the earth covering present around the buried portions of the columns for supporting the bridge and having superior economic efficiency and construction efficiency. SOLUTION: A footing 35 is attached near the ground surface of the buried portion 31b of the column 31 of a viaduct 1. The force of an earthquake is supported by the association of the buried portion 31b of the column 31 and the footing 35 which serve as an existing foundation. When the footing 35 is attached, all the floor parts 41 and earth covering 40 which are present around the buried portion 31b of the column 31 of the viaduct 1 do not need to be excavated. This is also applicable to a case where the footing 35 is additionally attached to an existing viaduct 1. Consequently, the earthquake resistance of the viaduct 1 is further increased, all the floor parts 41 and earth covering 40 which are present around the buried portion 31b of the column 31 of the viaduct 1 do not need to be excavated, and the economic efficiency and construction efficiency can be increased. COPYRIGHT: (C)2010,JPO&INPIT
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