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冰川冻土  2014 

基于熵权物元可拓模型的冻土路基热稳定性评价

DOI: 10.7522/j.issn.1000-0240.2014.0015, PP. 123-129

Keywords: 物元可拓模型,熵权,冻土路基,热稳定性

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Abstract:

冻土路基热稳定性评价是一个复杂的工程评价问题.应用可拓理论,选取年平均地温、体积含冰量、天然上限、路基高度及路基走向5个影响路基热稳定性的主要因素作为冻土路基热稳定性的评价指标,将熵权法引入可拓学理论中,避免确定指标权重的主观随意性,从而建立熵权物元可拓模型,并将该模型应用于青藏铁路普通路基的热稳定性评价.将评价结果与青藏铁路现场监测系统中4个普通路基断面热稳定性监测结果进行对比,结果表明应用物元可拓模型可以得到比较可靠的路基热稳定性评价结果.因此,该评价方法可应用于冻土路基热稳定性评价.

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