基于荷载-结构法的电缆隧道衬砌结构数值分析

Numerical Analysis of the Cable Tunnel Lining Structure Based on Load-Structure Method

采用荷载-结构方法对沈阳某电缆隧道复合衬砌结构进行了数值模拟分析,分析了在主动土压力荷载作用下衬砌混凝土结构的损伤分布和变形分布规律以及钢筋结构的受力分布规律。结果表明:在正常运行工况下,一次衬砌的拉损伤区主要出现在拱的两端及其与竖直段交接的部位外侧,二次衬砌的拉损伤区主要出现在拱顶的内侧。分析成果能为该工程设计及施工提供参考。

This paper used the load-structured method to conduct numerical simulation analysis for Shenyang a cable tunnel complex lining structure,analyzes the damage distribution and deformation distribution law of lining concrete structure under the role of active earth pressure and the force distribution law of steel structure.The results showed that： in normal operating conditions,the damage zone of the first lining was seen in l the two ends of arch and the outside of the part transferring the arch and the vertical section,and that of secondary lining was seen in the inside of the arch.The analysis achievement could provide a reference for this engineering design and construction.