BUCKLING RESISTANCE EVALUATION METHOD AND BUCKLING RESISTANCE EVALUATION APPARATUS OF STEEL PIPELINE

摘要

PROBLEM TO BE SOLVED: To enable proper evaluation of a shaft compression local buckling resistance of a steel pipeline having a weld joint part.;SOLUTION: In a buckling resistance evaluation method of a steel pipeline having a weld joint part, when a yield stress of a weld metal is defined as σ1, a yield stress of a piping matrix of the steel pipeline is defined as σ2, an extra-fill thickness in the weld joint part is defined as t_w, and a thickness of the steel pipeline is defined as t, a value of a buckling resistance parameter M defined by the following equation: M=σ₁/σ₂(1+t_w/t) is compared with a setting value Ma acquired for each aperture of the steel pipeline. Consequently, the shaft compression local buckling resistance of the weld joint part is evaluated.;COPYRIGHT: (C)2013,JPO&INPIT