基于风险分析的路基设计洪水频率标准研究

发布时间：2018-03-24 21:18

本文选题：道路工程　切入点：路基　出处：《中国公路学报》2014年03期

【摘要】：为制定科学合理的路基洪水设防标准,并为公路技术标准的修订提供理论依据,研究了路基洪水设防标准的制定方法和理论依据。在建立路基洪水风险评估模型的基础上,寻找近期与远期社会经济效益的平衡点,制定适合中国的技术标准。分析了全国水文特征的分异规律,将全中国分为3个大区,并结合中国社会经济发展现状、公路等级、地貌特征,根据风险模型提出了路基设计洪水频率标准框架,为标准修订提供理论依据。研究结果表明:仅由洪水频率控制的设防标准不能实现路基设防标准的统一,应当根据风险承受水平和水文特征制定标准。
[Abstract]:In order to formulate scientific and reasonable flood fortification standard of roadbed and to provide theoretical basis for the revision of highway technical standard, this paper studies the method and theoretical basis of setting up subgrade flood fortification standard. In order to find the balance point between the short-term and long-term social and economic benefits, to formulate the technical standard suitable for China, this paper analyzes the differentiation law of the hydrological characteristics of the whole country, divides the whole China into three regions, and combines with the present situation of China's social and economic development, the highway grade. According to the geomorphological characteristics, the paper puts forward the standard frame of design flood frequency for roadbed design according to the risk model, which provides the theoretical basis for the revision of the standard. The research results show that the standard of embankment fortification can not be unified only by the flood frequency control standard. Standards shall be established according to the level of risk tolerance and hydrological characteristics.
【作者单位】：长安大学公路学院;中交第一公路勘察设计研究院有限公司;
【基金】：交通运输部西部交通建设科技项目(2011 318 490 790) 中央高校基本科研业务费专项资金项目(CHD2011SY003,2013G1251030)
【分类号】：U416.1

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