西北水电Issue(2)：44-49,59,7.DOI:10.3969/j.issn.1006-2610.2026.02.007
1000 Mpa级钢在超高HD值埋藏式月牙肋钢岔管设计中的应用比较
Application Comparison of 1000MPa-Grade Steel in Design of Embedded Crescent Rib Steel Branch Pipes with Ultra-High HD Value
摘要
Abstract
Taking the embedded crescent rib steel branch pipe of a pumped storage power station as the research object,based on the finite element method,1 000 MPa-grade high-strength steel and traditional 800 MPa-grade high-strength steel are adopted.On the basis of the proposed structural parameters of the steel branch pipe,considering the combined bearing of surrounding rock and steel branch pipe,the wall thicknesses of the steel branch pipes corresponding to the two steel materials are calculated and determined,the stress levels of key parts are analyzed,and the stresses under the exposed pipe condition are checked.The results show that compared with the traditional 800 MPa-grade steel,the wall thickness of the steel branch pipe can be reduced by about 20%when 1 000 MPa-grade steel is used,which can significantly reduce the welding workload and the difficulty of on-site transportation and hoisting.The research results can provide material and technical support for the design of embedded crescent rib steel branch pipes with ultra-high HD value(HD>4 500 m·m).关键词
埋藏式月牙肋钢岔管/1 000 Mpa级钢/围岩联合承载/有限单元法Key words
embedded crescent rib steel branch pipe/1 000 MPa-grade steel/combined bearing with surrounding rock/finite element method分类
建筑与水利引用本文复制引用
范紫东,石长征..1000 Mpa级钢在超高HD值埋藏式月牙肋钢岔管设计中的应用比较[J].西北水电,2026,(2):44-49,59,7.基金项目
国家自然科学基金面上项目(51409194) （51409194）
