| 摘要 |
PROBLEM TO BE SOLVED: To stabilize a structure while simplifying the carrying-in and construction by forming a beam part by one or a plurality of blocks formed of polymer material, and fixing a base for preventing the protruding of the beam part when the beam part receives a load from above to the lower part of the beam. SOLUTION: Semi-arch blocks 2 made of foamed styrol are set on a foamed styrol-made base 1 so that the lower parts 6 of the blocks 2 are matched to the protruding edges 7, 7 formed on both sides of the base 1, and the end surfaces 8 of the two semi-arch blocks 2 are fitted to form an arch shape. A thin lid plate 3 is fitted to the upper part of the semi-arch blocks 2, 2. The fixation to the force of the semi-arch blocks 2 being apt to protrude outward when a load is received from above is realized by the fixation of the blocks 2 to the base 1. The foamed styrol-made base 1 and blocks 2 are extremely lightweight and easy to construct, and only the advantage of compression strength is exhibited without revealing the defect of bending of the foamed styrol by changing the bending force to a compression force to increase the stability. |
