摘要
鹤大高速公路小沟岭至抚松段是吉林省"十二五"期间高速公路建设项目中地形最复杂、桥隧比例最大、工程造价最高的高速公路,是吉林省"十二五"期间高速公路建设项目重中之重,项目途经的长白山区是中国生态环境最原始、最自然的保护区之一,也是吉林省乃至东北地区的水系发源地,丰富的生物资源、多彩的自然景观和脆弱的生态环境是该区的典型特征。因此,在项目勘察设计过程中最大限度地保护敏感的生态环境和水资源,减少生态破坏是设计中的重要原则;另一方面,工程项目所处区域为典型的东北季冻区气候,作为重要的运输通道,路基冻胀融沉、路面开裂冻融将影响桥涵、隧道构造物混凝土寿命,在设计上需要提高全线路基、路面、桥涵、隧道的抗冻耐久性。针对项目特点,设计单位科学制定项目总体设计原则、路线设计贯彻环保优先、路基设计坚持生态自然、路面设计坚持创新、桥隧设计坚持抗冻耐久、环保景观设计上坚持自然、人文,并进行了统一规范的标准化设计。
Xiaogouling to Fusong section of the Heling-Dalian Expressway boasts the one with most complicated geology,highest ratio of bridge to tunnel and highest project cost among the expressway projects built during the twelfth 5-year plan in Jilin Province.In the meantime the project is the priority project which passes through the nature protection zone and the water system headstream,and the typical feature is its diverse eco-resource,colorful natural landscape and weak ecological environment.Hence one of important principle during the survey and design is to project to the greatest extent the sensitive biology and water resource and minimize the ecological damage.On the other hand,the project is located in the typical seasonal frozen area,frost heaving thaw settlement,pavement cracks freezing and thawing will affect the service life of bridges and culverts,tunnels and concrete structures,hence it is needed to enhance the frozen-resistance of embankment,pavement,bridge and culvert and tunnels on the entire route.In regard with the project characteristics,the design company has prepared a series of design principles such as environment first for alignment design,maintain nature for embankment design,and innovations for pavement design,and freeze-resistance for bridge and tunnel design etc.and standard design has been realized under unified design specifications.
出处
《公路》
北大核心
2016年第6期11-17,共7页
Highway
关键词
公路勘察设计
季冻区
生态区
设计新观念
high survey and design
seasonal frozen region
ecology
new design concept
