地下压力非光滑钢管弹性稳定优化研究

Research on Elastic Stability Optimization for Underground Pressure Stiffening Steel Pipes

为避免目前火(核)电厂地下压力非光滑钢管选用水平布置槽钢为刚性环设计的不足,提出了采用竖向布置的槽钢压力刚性环的新方法,建立了地下压力非光滑钢管弹性稳定优化设计的数学模型及采用竖向布置的槽钢作为刚性环的方案,并结合工程实例,对循环水地下压力非光滑钢管进行弹性稳定优化研究,结果表明采用竖向布置的槽钢为刚性环,选用投资最小的刚性环型号、刚性环间距即采用"经济间距经济环"优化设计方案,与原"小环小间距"计方案相比,技术可靠、经济效益显著。

For avoiding the existing design shortage of using horizontal layout channel steel as rigid ring for underground pressure stiffening pipe in coal-fired （nuclear） power station, an improved vertical laying out channel steel method has been proposed. A mathematical model of elastic stability optimization for the pressure stiffening steel pipe has been established and the channel steel vertical laying out plan has been adopted. With the combination of engineering example and the elastic stability optimization for underground pressure stiffening pipe, has been researched Using vertical laying out channel steel as rigid ring and choosing the minimized invest plan i. e. economic distance economic ring shows technical reliable and ring small distance plan. economic advantage compared with the original small ring small distance plan.