沙漠地区输电线路铁塔基础抗拔机理模型试验及分析

Model Tests for Pulling-up Mechanism of Steel Towers of Electric Transmission Line in Desert

对达拉特～丰镇输电线路工程的铁塔基础做了模型试验 ,测试了土中位移、破坏形式、土中应力分布 ,应用软件ALGORFEAS ,得出了土体上拔时的应力场分布 ,并提出了强度机理及极限上拔力的计算方法。

Model tests have been carried out for the steel tow ers of Dalate\|Fengzhen electric power transmission line. The displacement and f ailure patterns of soil and the distribution of soil stress are measured and the software program ALGOR FEAS is used for the analysis.The distribution of stress field is obtained while the soil is pulled up by the foundation of the tower, an d the mechanism of strength and the calculation of limit uplift force are presen ted.