| 摘要 |
PROBLEM TO BE SOLVED: To optimize strength, workability, and cost of a foundation structure where precast concrete footing beams 12 are arranged.SOLUTION: Each of footing beams 12 is either a footing beam whose both ends or one end are/is provided with a male joint fitting 20, a footing beam whose both ends or one end are/is provided with a female joint fitting 22, or a footing beam whose one end is provided with the male joint fitting 20 and whose other end is provided with the female joint fitting 22. The footing beams 12 having a length not more a maximum allowable length are selected, and connected to each other through a connection part of the male joint fitting 20 and the female joint fitting 22. One of the footing beams 12 forming an outer foundation part is provided with an independent female joint fitting 22 on the side surface except both end parts, and the male joint fitting 20 of an inner foundation part is connected to the female joint fitting 22. |
