电塔塔基边坡受风荷载影响的稳定性研究

Study on the Stability of the Tower Slope of Electric Tower Affected by Wind Load

以镇江五峰山输电铁塔塔基边坡为研究对象,在分析研究区工程地质环境背景的基础上,借助FLAC3D三维数值模拟软件,采用强度折减法,详细分析了塔基边坡在自然风(风速3. 4 m/s)、大风90°、大风60°、大风45°、大风0°(大风风速30 m/s)五种工况下的变形特征,计算了各工况下塔基边坡的稳定性系数,结果表明,以上五种工况下塔基边坡基础的整体不均匀沉降分别为0. 43‰、0. 66‰、0. 50‰、0. 33‰、0. 65‰,边坡稳定系数分别为1. 31、1. 25、1. 23、1. 23、1. 18,表明在五种工况下边坡均处于稳定状态,大风0°时塔基边坡的稳定性相对较小。

Based on the analysis of the engineering geological environment background of transmission iron tower foundation on Wufeng mountain in Zhenjiang,FLAC3D three-dimensional numerical simulation software and strength reduction method were used to analyze the deformation characteristics of the tower foundation slope under five working conditions of natural wind,strong wind 90°,strong wind 60°,strong wind 45°and strong wind 0°.The stability coefficient of the tower foundation slope under each working condition was also calculated.The results show that the overall uneven settlement of tower foundation slope foundation under the conditions of natural wind,strong wind 90°,strong wind 60°,strong wind 45°and strong wind 0°are respectively:0.43‰,0.66‰,0.50‰,0.33‰,0.65‰.The slope stability coefficients are respectively:1.31,1.25,1.23,1.23,and 1.18,indicating that the slope is in a stable state under five operating conditions.The stability of the foundation slope is relatively small when the wind is 0°.