Preprint Article Version 1 This version is not peer-reviewed

Variation of Ground Temperature along the Stratum Depth in Ice-rich Tundra

Version 1 : Received: 6 February 2020 / Approved: 7 February 2020 / Online: 7 February 2020 (11:31:37 CET)

How to cite: Liu, Z.; Yu, T.; Yan, N.; Gu, L. Variation of Ground Temperature along the Stratum Depth in Ice-rich Tundra. Preprints 2020, 2020020095 (doi: 10.20944/preprints202002.0095.v1). Liu, Z.; Yu, T.; Yan, N.; Gu, L. Variation of Ground Temperature along the Stratum Depth in Ice-rich Tundra. Preprints 2020, 2020020095 (doi: 10.20944/preprints202002.0095.v1).

Abstract

The pile foundation in the permafrost region is in a negative temperature environment, so the concrete is affected by the negative temperature of the surrounding soil.It not only affects the formation of concrete strength, but also leads to engineering quality accidents in serious cases.Based on the actual measurement of temperature at different strata depths and the comprehensive consideration of surface temperature, terrestrial heat flux and other parameters, the law curve of temperature change along depth in Greater Khingan is established.The calculated results of the curve are consistent with the measured results of ground temperature.The results show that the variation trend of ground temperature along the strata depth at different monitoring sites is basically the same. From June to November, the ground temperature at different depths tends to be constant.From December to May, the ground temperature at any depth within the depth range of 0 to 5.5m follows the law of the cosine function.Below 5.5m, the earth temperature no longer varies with depth.The research results can be used as reference for pile foundation construction under negative temperature environment.

Subject Areas

permafrost; temperature; nonlinear fitting; prediction model

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