학술논문
Frost Heave Performance of Shallow Foundations for Overhead Transmission Lines in Seasonally Frozen Alpine Regions.
Document Type
Article
Author
Source
Subject
*FROST heaving
*SHALLOW foundations
*ALPINE regions
*ELECTRIC lines
*REINFORCED concrete
*BEARING capacity of soils
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Language
ISSN
0887-381X
Abstract
The Lanolin 750 kV electrical transmission line traverses more than 102.86 km through seasonally frozen regions, causing many engineering problems for transmission tower foundations. In this work, physical models of reinforced concrete independent foundations in soils with different frost heave grades were used to simulate the frost heaving performance in seasonally frozen alpine regions. The test results were used to evaluate the tangential frost heaving force calculated based on different specifications. The results showed that the tangential frost heaving force and frozen depth increased with the temperature decrease. Moderately frost-susceptible soils also increased the tangential frost heaving force and frozen depth. Based on technical standards, the main differences between the calculated and the test values were the variable load component and effective frozen depth coefficients. Correcting the coefficient values resulted in a closer agreement between the test and the calculation results. [ABSTRACT FROM AUTHOR]