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《Subgrade Engineering》 2013-04
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Contrastive Analysis on Temperature Field of Embankment and That under Natural Ground Surface

LI Zhe,ZHAO Zuofu,XING Yanru(Key Laboratory for Special Area Highway Engineering of Ministry of Education,Chang'an University,Xi'an 710064,China)  
In order to study difference between effects of atmospheric temperature on temperature field of high-filled embankment and that under natural ground surface,taking the loess filled section for test of Linglu Section of Sanmenxia-Xichuan Highway as the background,temperature sensors were buried in the embankment and under natural ground surface for on-site tracing and measuring,and then on the axis of time and depth,the change laws and amplitude of the soil temperature,and the depth affected by atmospheric temperature were analyzed.The results show that there is hysteresis of soil temperature variation generally existed in the embankment and under natural ground surface with large change amplitude in shallow layer and small one in deep layer;at the same moment,different temperature variation tendencies exist in the embankment;and in the layers with same depth,the change amplitude of temperature in the embankment is larger than that under natural ground surface;the depth of temperature field under natural ground surface affected by atmospheric temperature is 4~6m and the depth of temperature field in the loess embankment affected is more than 10m.
【CateGory Index】: U416.12
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【Citations】
Chinese Journal Full-text Database 4 Hits
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