典型路基与边坡失稳破坏应急抢险技术研究

发布时间：2018-03-07 05:17

本文选题：路基　切入点：边坡　出处：《重庆交通大学》2014年硕士论文　论文类型：学位论文

【摘要】：公路交通作为国家经济发展的服务行业,为国家经济发展提供了基础支撑。特别是山区,干线公路往往起到经济枢纽、生命通道的作用,山区公路交通的运营安全显得尤为重要。山区地形、地质条件复杂,高填深挖现象常常不可避免,形成了众多的高路堤与高边坡。山区公路是地质灾害和水毁等灾害的易发区,路基与边坡的应急抢险技术对公路运营安全影响重大。论文针对路基与边坡应急抢险技术展开了系统的研究,并取得如下研究成果： ①基于路堤、路堑及半填半挖三种路基结构形式,结合路基与边坡典型破坏模式,系统分析研究了路基沉陷、路基开裂、滑坡、崩塌以及泥石流等灾害的典型破坏模式及其形成机理和条件。 ②结合路基与边坡典型破坏模式和应急抢险工程特点,分别从坡率法类、支挡类和加固类三方面提出了削坡减载、堆载压脚、抗滑桩、常规钢管桩、微型钢管桩、可预制锚杆式挡土墙、石笼挡墙等应急抢险技术,并对各技术措施的适宜性进行了系统的分析、评价。 ③基于塔式评价指标结构模型,构建了以路基与边坡应急抢险技术综合适宜性为目标层,以施工难易程度、施工周期、对公路通行影响及技术经济性为准则层,以施工条件、地质条件、技术难度等为指标层的评价指标体系。 ④针对路基与边坡应急抢险工程特点,采用层次分析法确定了各准则层评价指标相对目标层、指标层评价指标相对准则层以及指标层指标相对目标层的权重,并采用加权平均法对各技术进行综合量化评价,形成了系统的路基与边坡应急抢险技术评价体系。
[Abstract]:As a service industry of national economic development, highway transportation provides a basic support for national economic development. Especially in mountainous areas, trunk roads often play an important role in economic hub, and the operation safety of mountainous road traffic is particularly important.
Mountainous terrain, complex geological conditions, high filling and deep excavation often inevitable phenomenon, the formation of a large number of high embankment and high slope. The mountain area highway is in areas prone to geological disasters and flood disasters such as the influence of subgrade and slope of highway operation safety emergency rescue technology major. The needle of the emergency rescue technology subgrade and slope, and achieves the following research results:
(1) based on the three subgrade structures including road embankment, cutting and half filling and half excavation, combined with typical failure modes of roadbed and slope, the typical failure modes and their forming mechanism and conditions of roadbed subsidence, roadbed cracking, landslide, collapse and debris flow are systematically analyzed.
With the combination of subgrade and slope typical failure mode and emergency rescue project features, respectively, from the slope rate method, retaining and strengthening three aspects of cutting slope and reducing load, load pressure foot, conventional anti slide pile, steel pipe pile, micro steel piles, precast anchor retaining wall, gabion retaining wall etc. emergency rescue technique, and evaluate the suitability of various technical measures are systematically analyzed.
The tower structure index evaluation model based on the construction of the emergency rescue technology of roadbed and slope comprehensive suitability for the target layer, with the difficulty of construction, the construction period of the highway, and effects of technology and economy as the criterion layer, with the construction conditions, geological conditions, evaluation index system for index level technical difficulty.
According to the characteristics of subgrade and slope emergency project, using AHP to determine the evaluation index of each criterion layer index layer relative to the target layer, criterion layer and index evaluation index relative index weight relative to the target layer, and using the weighted average method, comprehensive quantitative evaluation of each technology, formed a system of emergency rescue technology and roadbed the slope of the evaluation system.

【学位授予单位】：重庆交通大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U418.5

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