岩土力学Issue(9)：2642-2650,9.
泥石流危害桥隧工程易损性评价
Engineering vulnerability assessment for bridges and tunnels harmed by debris flow hazards
摘要
Abstract
In order to advance debris flow loss assessment from macroeconomic evaluation to service for civil engineering, the concept of engineering vulnerability based on structural devastation extent of civil engineering infrastructures is put forward. However, for those engineering harmed by debris flow hazards, such as bridges and tunnels, it is insufficient to determine the actual disaster loss merely according to structural devastation extent. When the engineering function is completely lost but structure slightly damaged, its vulnerability can be underestimated. Besides, when the engineering function is fairly workable but structure severely damaged, its vulnerability can be overestimated. Therefore, on the basis of the conventional assessment of structural devastation extent, the influencing factors for bridges and tunnels’ function is introduced, such as hazard-affected characteristics, railway/highway ranking and restoration cost. Thus, the engineering vulnerability assessment method for bridges and tunnels harmed by debris flow hazards is proposed, considering both structural devastation and function loss. In the case study, the assessing results show that the insufficiency of the conventional structural assessment can be overcome by this method. This method extends and develops the concept of engineering vulnerability, which makes the assessment more comprehensive and credible. Hence, it is concluded that this method is of great significance to correctly predict and verify the disaster situation of bridges and tunnels harmed by debris flow hazard, to properly prepare the emergency plans or to initiate a quick response.关键词
泥石流/工程易损性/桥隧工程/结构损毁/功能损失Key words
debris flow/engineering vulnerability/bridge and tunnel engineering/structural devastation/function loss分类
交通工程引用本文复制引用
徐林荣,陈舒阳,曹禄来..泥石流危害桥隧工程易损性评价[J].岩土力学,2014,(9):2642-2650,9.基金项目
国家自然科学基金（No.41272376）；铁道部专项项目（No.2011G017-C）；西部交通建设科技项目（No.200831800087）。 （）
