煤气与热力2025，Vol.45Issue(10)：9-11,34,4.
套管内直埋热水管道竖向稳定性判定与提升措施
Determination and Improvement Measures for Vertical Stability of Directly Buried Hot Water Pipelines in Casings
张丕瑞 1王彦秋 1吕成治1
作者信息
- 1. 华电青岛热力有限公司,山东青岛 266031
- 折叠
摘要
Abstract
Taking DN 800 mm directly buried hot water pipeline as an example,the vertical stability of the pipeline in the casing was determined,the hazards of pipe instability in the casing were analyzed,and the so-lution suggestions were proposed.Simply complying with the judgment criteria specified in Technical Speci-fication for Directly Buried Hot-water Heating Pipeline in City(CJJ/T 81-2013)does not guarantee the vertical stability of the pipeline when the casing remains un-filled with soil.The premise for using CJJ/T 81-2013 to determine whether the pipeline in the casing meets the vertical stability requirements is that the casing is filled with sand.If the casing cannot be filled with sand,measures such as reducing pipeline axial force,minimizing the unsupported length within the casing,or installing internal supports should be implemented to prevent instability.关键词
顶管安装/套管/竖向稳定性/直埋热水管道Key words
pipe jacking installation/casing/vertical stability/directly buried hot water pipeline分类
建筑与水利引用本文复制引用
张丕瑞,王彦秋,吕成治..套管内直埋热水管道竖向稳定性判定与提升措施[J].煤气与热力,2025,45(10):9-11,34,4.
