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原文传递 GRAA Winner Profile: Gonghe-Yushu Expressway, PR China

题名：	GRAA Winner Profile: Gonghe-Yushu Expressway, PR China
正文语种：	eng
摘要：	Gonghe-Yushu is a 627km-long Expressway in the Qinghai-Tibet Plateau built by the Chinese Government as a "lifeline" supporting the reconstruction of Yushu Tibetan Autonomous Prefecture after the Yushu Earthquake in 2010. The region is characterised by an extremely unstable permafrost with average temperatures ranging from -1.5℃ to -0.5℃ and an elevation between 4,000m and 5,000m. These permafrost conditions have significant engineering implications, with distress rates resulting from thaw-settlement and frost-heave that can reach or exceed 30%. No expressway has ever been constructed in any other permafrost region on account of the immense potential risk from thaw.
出版年：	2021
期刊名称：	World Highways
卷：	30
期：	1
页码：	15-15