Open AccessConfirmation of Reasonable Position of iron tower for Gravel Soil in Transmission Line Project in South Part of Gansu
Author(s) -
Yanjun Ji,
Liang Chen,
Xuelin Zhang
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/526/1/012125
Subject(s) - tower , slope stability , geotechnical engineering , geology , slope stability analysis , structural engineering , engineering
Based on the example of a power transmission line project in South part of Gansu, using the limit equilibrium analysis method, by Lizheng software, the safety coefficient of gravel slope under the tower load was calculated. The calculation results show that under the condition of safety coefficient of 1.25, the safe slope gradient is 39.3° in natural condition. The height of slope added from 9m to 11m, the safe slope gradient decreased from 31.1° to 29.2°, and the height of slope added from 11m to 18m, the safe slope gradient added from 29.2° to 39.2°. When the height of slope reached 20m, the iron tower has no effect on slope, the stability of iron tower was determined by stability of slope itself. After vertical load was applied, the safe slope gradient and shear stress inside of the slope changed seriously. Under 200kPa load, from the foot to top of the slope, the shear stress increased 35.27%∼93.1%, and on the top, 122.2%, maximumly, comparing with natural condition. This paper can provide a scientific basis for the later project in the same area.