| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a load bearing material which is relatively inexpensive, increased in strength against a load, and can be easily manufactured. <P>SOLUTION: This load bearing material comprises an outside steel pipe 2, an inside steel pipe 3 which is arranged in the outside steel pipe 2, and a reinforcing steel rod 4 which is arranged between the outside steel pipe and the inside steel pipe 2 and 3, and a filler 6 which is infilled between the outside steel pipe and the inside steel pipe 2 and 3. The filler 6 is constrained by the outside steel pipe and the inside steel pipe 2 and 3, and compressive stress is increased. The reinforcing steel rods 4, 4 and 4 between the outside steel pipe and the inside steel pipe 2 and 3 are positioned on the side of a tensile area. Thus, the tensile stress on the side of the tensile area can be increased by making the reinforcing steel rods 4, 4 and 4 resist tensile force generated by bending, and stress against the load can be effectively increased. Additionally, the load bearing material can be simply constituted by combining the steel pipes 2 and 3 and the steel rods 4, 4 and 4 to each other. <P>COPYRIGHT: (C)2008,JPO&INPIT |
