大管径直埋热水管道强度设计理论及研究进展

Strength Design Theory and Research Progress of Large-diameter Directly Buried Hot Water Pipeline

综述直埋热水管道强度设计理论及研究进展,总结分析直埋热水管道热屈曲、大管径直埋热水管道失效准则、时变温压荷载(时变性温度、压力荷载)作用下大管径直埋热水管道疲劳寿命等方面的研究成果与不足,对开展直埋热水管道强度设计理论研究的必要性和发展方向进行阐述与展望。

The strength design theory and research progress of directly buried hot water pipelines are overviewed. The research achievements and deficiencies of thermal buckling of directly buried hot water pipelines,the failure criteria of large-diameter directly buried hot water pipelines,and the fatigue life of largediameter directly buried hot water pipelines under timevarying temperature and pressure loads( time-varying temperature and pressure loads) are summarized and analyzed. The necessity and development direction of theoretical research on strength design of directly buried hot water pipelines are elaborated and prospected.