摘要
压力管道广泛应用于能源、交通等国民经济重要部门中 ,保证其安全性运行是关系到国民经济和人民生命财产的大事 ,尤其是大型水电站输水管线的安全性一直受到广泛的关注 ,一旦发生破坏将造成无法挽回的损失。本文通过断裂韧度试验 (裂纹张开位移COD和延性断裂韧度JIC试验 ) ,讨论了新型压力管道用钢常温下焊接接头各部位的断裂特性。在此基础上 ,利用ANSYS有限元软件计算了管道受力情况 ,模拟分析管道的应力分布。依据“ASME”准则中有关含缺陷的铁素体压力管道安全评定程序 ,给出了在水电站输水管道修复后 ,该种钢管的安全可靠性。结果表明 ,这种新型压力管道能够满足水电站的工况要求。
Welded pressure pipes were widely used in the fields of energy source,transportation and so on.It is very important to ensure the safety and reliability of pressure pipes,that in the hydroelectric power station is the focus,because once it is destroyed,the heavy loss zoill be suffered.Based on the experiments the fracture characteristics of welding joint in new pressure pipes used for hydroelectric power station were discussed at room temperature in this paper.The ANSYS codes have been employed to simulate the conditions of pipe loading and to analyze the piping stress distributions.According to ASME Piping Flaw Evaluation, the stability and safety in ferritic steel piping have been calculated.The assessment results indicated that the safety could meet the requirement of working conditions.
出处
《焊接学报》
EI
CAS
CSCD
北大核心
2001年第3期76-78,共3页
Transactions of The China Welding Institution
