円形孔を有するはりの耐力と設計法 : 3.実用的耐力算定式の提案

抄録

Analytical methods on the stregth of beams with non-reinforced and pipe-reinforced circular holes have been shown in Part-1 and Part-2. In this paper, practical expression to estimate the strength of beams with web openings are proposed based on the theoretical methods above-mentioned. Shearing and bending strength of beams with not only single hole but also several holes can be caluculated, using coefficients by proposed equations or figures. The necessary volume of welding between reinforcing pipes and web plates is also described.