高原多年冻土区以桥代路设置的客观条件技术研究  

Research on the Objective Conditions of Replacing Railway by Bridge in Plateau Permafrost Regions

作　　者：符进 谢前波 李俊[1] 

机构地区：[1]中交第一公路勘察设计研究院有限公司多年冻土区公路建设与养护技术交通行业重点实验室,西安市710068 [2]西安市地下铁道工程有限责任公司

出　　处：《公路》2013年第11期142-146,共5页Highway

摘　　要：通过调查、分析等手段,研究了高原多年冻土区以桥代路设置的自然条件及冻土条件,分析得出了以桥代路设置的客观条件。研究表明,路基工程在通过大面积的积水坑、热融滑塌、冻融泥流、热融湖塘等不良地表、地质条件路段时,在通过自然保护区野生动物的原有的迁徙走廊带时,当基底冻土类型属于高温(-0.0℃^-1.0℃)、高含冰量(饱冰、含土冰层)多年冻土时,需要设置以桥代路工程。The paper, through investigation and analysis, studies the natural conditions and permafrost conditions under which roads shall be replaced by bridges in plateau areas. The results show that the replacement by bridge will occur when the highway across the regions with unfavorable ground surface and geological conditions, such as large plash, thaw slumping, freeze-thaw mud flow and thaw lake, and when the highway across the original migration corridor of wildlife in nature reserves, as well as in warm permafrost regions（-0.0℃～-1.0℃） and ice-rich permafrost regions.

关 键 词：多年冻土区 以桥代路 客观条件 

分 类 号：U419.92[交通运输工程—道路与铁道工程]