CAJ | 학술논문

储罐拱顶加肋是提高储罐稳定性的重要措施之一。加强肋结构主要由经向肋和纬向肋与拱顶顶板焊接起到加强拱顶稳定性的作用。纬向肋圈数和扇形板数决定了肋结构形式，进而影响拱顶稳定性的提高、肋板钢量的消耗和工程施工的难易程度。根据带肋球壳许用外压公式和加强肋耗材量，对加强肋结构进行设计与优化。结果表明，对于给定截面积形状和大小的肋，纬向肋圈数和扇形板数对拱顶的肋耗钢量和拱顶稳定性存在影响。以单位重量钢材提供的许用压力最大为优化条件，存在唯一的最优纬向肋圈数、纬向肋间距和扇形板数，使拱顶设计最优。
저관공정가륵시제고저관은정성적중요조시지일。가강륵결구주요유경향륵화위향륵여공정정판한접기도가강공정은정성적작용。위향륵권수화선형판수결정료륵결구형식，진이영향공정은정성적제고、륵판강량적소모화공정시공적난역정도。근거대륵구각허용외압공식화가강륵모재량，대가강륵결구진행설계여우화。결과표명，대우급정절면적형상화대소적륵，위향륵권수화선형판수대공정적륵모강량화공정은정성존재영향。이단위중량강재제공적허용압력최대위우화조건，존재유일적최우위향륵권수、위향륵간거화선형판수，사공정설계최우。
Ribbing is an important measure to improve stability of the dome-roofed steel storage tanks.Its structure mainly includes longitudinal ribs and latitudinal ribs welded with dome roof to improve the stabil-ity.The rib structure is dependent on numbers of latitudinal ribs course and sectional plate.Different structural designs have different influence on the stability of stiffened plate,steel consumption and ease of engineering construction.According to rib consumption and calculation formula of ribbed spherical stabili-ty,design and optimization about rib structure have been worked.The results show that,given cross-sec-tion shape and dimensions of ribs,numbers of latitudinal ribs course have some effects on dome-roof sta-bility and consumption;there is only one value about numbers of latitudinal ribs course and sectional plate to satisfy the optimization design in conditions of allowable pressure per unit steel consumption.