深基坑开挖对邻近超高伏电压线影响研究

INFLUENCE OF DEEP FOUNDATION PIT EXCAVATION ON ADJACENT ULTRA-HIGH VOLTAGE LINES

为研究深基坑开挖对邻近超高伏电压线影响规律,以上海地区某深大基坑为例,通过现场实测分析了基坑开挖对邻近超高伏电压线的影响规律。结果表明基坑开挖引起超高伏电压线产生垂直和水平位移,水平位移小于垂直位移。深部土体的开挖,对超高伏电压线垂直位移影响明显。角点处测点的超高伏电压线垂直位移明显小于基坑边中点处测点的超高伏电压线垂直位移。随着测点距基坑边线距离的增加,超高伏电压线垂直位移和水平位移均显著减小。文中的研究结果可为相关工程的设计计算与施工提供参考。

Taking a deep foundation pit in Shanghai as the case,the influence of foundation pit excavation on adja⁃cent ultra-high voltage lines is analyzed.The results show that the excavation of foundation pit causes the vertical and horizontal displacement of ultra-high voltage line,and the horizontal displacement is less than the vertical dis⁃placement.The excavation of deep soil has an obvious influence on the vertical displacement of ultra-high voltage line.The vertical displacement of ultra-high voltage line at the corner point is significantly less than that at the mid⁃point of the foundation pit.With the increase of the distance between the measuring point and the edge line of the foundation pit,the vertical displacement and horizontal displacement of the ultra-high voltage line decrease signifi⁃cantly.The research results can provide reference for the design,calculation and construction of related projects.