京昆高速公路四川境段特殊路基边坡的处治与评价分析

发布时间：2018-05-08 12:44

本文选题：特殊路基边坡 + 边坡处治　；参考：《西南交通大学》2015年硕士论文

【摘要】：京昆高速四川境内段沿线地形地貌多样,地质条件复杂,川北低山区、川中盆地区和川西南中山区边坡特征差异性较大,边坡处治数量多、规模大,公路边坡的处治呈现出多样性、复杂性的特征。边坡工程中合理的处治方案的制定,不仅与处治技术水平有关,更与当地工程经验息息相关。公路边坡所处区域地形地貌、地质状况、水文条件、地震作用等多种因素相互联系与制约,影响着边坡的稳定程度。在边坡稳定性分析基础上,如何合理评价公路边坡处治方案的适宜性,成为工程研究学界长时间以来以期解决的重要难题。本论文收集整理了京昆高速四川境段公路特殊路基边坡资料,在分析边坡稳定性特征因素的基础上,总结沿线区域典型边坡处治方案,对京昆高速四川境段特殊路基边坡处治技术的适宜性进行分析。主要进行以下研究以：(1)以京昆高速四川境段特殊路基边坡的外形条件、边坡结构类型条件和边坡的环境条件为特征因素指标,通过统计分析,量化各分区处治边坡与影响边坡稳定性的特征因素之间的关系,进而以各项特征因素为参变量,研究其与挡墙、抗滑桩、锚杆、锚索及其组合等典型处治措施与特殊路基之间的相关关系。(2)基于现场监测和数值分析方法,对西(昌)攀(枝花)高速公路K132边坡进行现场监测分析和数值计算。监测结果表明降雨及施工扰动因素对边坡稳定性影响较大；锚杆与框架锚杆方案的比选结果表明两者都可一定程度改善坡体浅层应力位移场,但是框架锚杆更有利于控制浅层坡体变形；框架锚索模拟结果表明,锚索框架梁有效地提高了边坡的稳定性。(3)依托深切低山峡谷区、浅切平原丘陵区和深切低山丘陵区特殊路基边坡典型处治工程,应用EMU岩质边坡软件进行稳定性验算,从定性和定量角度对典型边坡处治进行措施的适宜性进行评价分析。
[Abstract]:There are various landforms and complicated geological conditions along the Beijing-Kunming Expressway in Sichuan Province. The slope characteristics of the low mountainous area of northern Sichuan, the middle basin area of Sichuan Basin and the middle mountain area of southwest Sichuan are quite different, and the number and scale of slope treatment are large. The treatment of highway slope presents the characteristics of diversity and complexity. The formulation of reasonable treatment scheme in slope engineering is not only related to the technical level of treatment, but also closely related to local engineering experience. The regional landform, geological condition, hydrological condition, seismic action and other factors of highway slope are related and restricted, which affect the stability of slope. On the basis of slope stability analysis, how to reasonably evaluate the suitability of highway slope treatment scheme has been an important problem in engineering research circles for a long time. Based on the analysis of the characteristic factors of slope stability, this paper collected and sorted out the special subgrade slope data of the Beijing-Kunming Expressway in Sichuan Province, and summarized the typical slope treatment plan of the region along the line. The suitability of slope treatment technology for special subgrade in Jing-Kun high-speed Sichuan border section is analyzed. The following studies were carried out: (1) taking the shape condition of the special subgrade slope, the structural type condition of the slope and the environmental condition of the slope as the characteristic factor indexes of the special roadbed slope of the Beijing-Kunming Expressway in Sichuan Province, through statistical analysis, Quantifying the relationship between the treatment of slope and the characteristic factors affecting the stability of slope, and then taking each characteristic factor as parameter, studying its relation with retaining wall, anti-slide pile, anchor rod, etc. Based on the field monitoring and numerical analysis method, the field monitoring analysis and numerical calculation of K132 slope of Xichang climbing (Zhihua) Expressway are carried out. The monitoring results show that rainfall and construction disturbance factors have great influence on slope stability, and the comparison of anchor rod and frame anchor scheme shows that both of them can improve the shallow stress and displacement field of slope body to some extent. But the frame anchor rod is more favorable to control the deformation of shallow slope body, and the simulation results of frame anchor cable show that the stability of slope is improved effectively by the frame anchor cable beam. In the typical treatment project of special subgrade slope in shallow-cut plain hilly area and deep low hill region, the stability of typical roadbed slope is checked by EMU rock slope software, and the suitability of treatment measures for typical slope is evaluated and analyzed from the angle of qualitative and quantitative analysis.
【学位授予单位】：西南交通大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U416.1

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