山区陡坡地段桥梁墩台防护方案分析  

Analysis on Protection Scheme for Bridge Pier and Abutment in Steep Slope Section of Mountainous Area

作　　者：马雷 毛攀 Ma Lei;Mao Pan(Anhui Transport Consulting&Design Institute Co.,Ltd.,Hefei 230088,China)

机构地区：[1]安徽省交通规划设计研究总院股份有限公司,合肥市230088

出　　处：《北方交通》2024年第4期9-12,16,共5页Northern Communications

摘　　要：在山区公路工程建设过程中,受地形地貌限制,陡坡地段桥梁墩台的防护至关重要,需要根据地层信息、坡高坡率、结构形式、危岩分布以及桩基外漏等因素确定防护方案。宜宾至昭通高速公路二期工程位于云贵高原与四川盆地的结合部,海拔介于570~2240m,高差1670m,山高谷深,属于典型的山地构造地形。结合该项目实况,文章从影响因素、方案分析、控制要点、现场典型案例四方面进行分析,并应用定性和定量相结合的分析方法,提出相应的处治措施,从而确保陡坡地段墩台安全稳定。In the construction process of highway engineering in mountainous area,due to the limitation of terrain and topography,the protection of bridge pier and abutment in steep slope section is very important.It is necessary to determine the protection scheme based on factors such as stratigraphic information,slope height and ratio,structural form,distribution of dangerous rocks,and leakage of pile foundation and so on.The second phase project of Yibin-Zhaotong expressway is located at the junction of the Yunnan-Guizhou plateau and Sichuan basin,with an altitude of 570-2240m,elevation difference of 1670m,high mountains and deep valleys,belonging to typical mountainous tectonic terrain.In combination with the actual situation of the project,four aspects like influencing factors,scheme analysis,control points,and typical on-site cases are analyzed.The qualitative and quantitative analysis methods are applied,and the corresponding treatment measures are put forward,so as to ensure the safety and stability of piers and abutments in steep slope section.

关 键 词：山区公路 桥梁工程 陡坡 墩台防护 桩基外漏 

分 类 号：U442.5[建筑科学—桥梁与隧道工程]