本文選題：土力學　切入點：遺址土　出處：《巖石力學與工程學報》2016年S1期 　論文類型：期刊論文

【摘要】：為了探索利用紅外熱像檢測技術(通過熱傳導率的差異)對PS加固效果的評價方法,利用新疆交河故城遺址現場的擾動土制成土樣,并經過不同濃度的PS加固,測定其力學強度和熱傳導率。實驗結果顯示,經PS加固后的土樣,其力學強度增大且熱傳導率降低。在相同PS用量條件下,土樣力學強度隨PS濃度增加而增大;熱傳導率隨PS濃度增加而減小。通過對實驗數據回歸分析,熱傳導率與強度具有良好的線性負相關關系。最后還探討了PS作用下,土體熱傳導率的變化機制,從土體的微觀結構角度闡述熱傳導率與強度之間的相關性。研究結果表明熱傳導率可用于評價PS的加固效果,這為研究PS加固效果的無損檢測提供了一條途徑。
[Abstract]:In order to explore the evaluation method of PS reinforcement effect by using infrared thermal image detection technology (through the difference of thermal conductivity), soil samples were made from disturbed soil from the site of Jiaohe City site in Xinjiang, and were strengthened with different concentrations of PS. The experimental results show that the mechanical strength of the soil reinforced by PS increases and the thermal conductivity decreases. Under the same PS content, the mechanical strength of the soil increases with the increase of PS concentration. The thermal conductivity decreases with the increase of PS concentration. By regression analysis of experimental data, it is found that there is a good linear negative correlation between heat conductivity and strength. Finally, the variation mechanism of soil thermal conductivity under PS action is discussed. From the point of view of microstructure of soil mass, the correlation between heat conductivity and strength is expounded. The results show that heat conductivity can be used to evaluate the reinforcement effect of PS, which provides a way to study the nondestructive testing of PS reinforcement effect.
【作者單位】： 上海交通大學土木工程系;上海師范大學建筑工程學院;國家古代壁畫保護工程技術研究中心保護研究所;
【基金】：國家自然科學基金資助項目(41272319) 國家古代壁畫保護工程技術研究中心資助項目(20111202)~~
【分類號】：TU43

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1 Mike F.Middleton;韋阿娟;譚守強;;干燥鉆屑骨架熱傳導率的測定[J];地質科學譯叢;1995年04期

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