| 摘要 |
PROBLEM TO BE SOLVED: To provide wide practical application of a bridge pier structure in which the lower end of a steel bridge pier is joined to an RC footing. SOLUTION: According to a design method for a bridge pier joint structure, a pressure Pi that concrete receives from a reinforcing basket is calculated from the equation: Pi=T*tanθ/(ψ*π*Le), where a design tensile force acting on a circular steel pipe is T, the outer diameter of the reinforcing basket isψi, the outer diameter of the circular steel pipe isψo, an effective joint length between the reinforcing basket and the circular steel pipe is Le, and the angle of a compression strut formed between the reinforcing basket and the circular steel pipe isθ. Then, the reinforcing basket outer diameterψi, the effective joint length Le, or the blending of concrete is determined so that the calculated Pi is equal to or less than the yield strength or rupture strength of the concrete. COPYRIGHT: (C)2009,JPO&INPIT
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