复杂地质条件区跨江桥位选址研究——以西藏墨脱县德兴大桥为例  

Research on the Location of River-crossing Bridge in Areas with Complex Geology Condition:Taking the Dexing Bridge in Motuo County,Xizang as an Example

作　　者：李志平[1] 王有昌[1] 巨正平[1] 马敏杰[1] LI Zhiping;WANG Youchang;JU Zhengping;MA Minjie(Kunming Survey&Design Institute of National Forestry and Grassland Administration,Kunming 650216,China)

机构地区：[1]国家林业局昆明勘察设计院,云南昆明650216

出　　处：《昆明冶金高等专科学校学报》2020年第3期71-75,共5页Journal of Kunming Metallurgy College

摘　　要：针对高烈度地震区、地形地质条件复杂、不良地质密集发育等复杂地质条件区,跨越江河的重要桥梁工程应优先选址,地质条件是桥位选择的关键。以西藏墨脱县德兴大桥选址为例,结合项目区河岸特点、工程地质环境条件,拟定跨江桥位选址原则,采用无人机辅助调查、工程地质调绘、工程物探、地质钻探等综合勘察方法,对河段工程地质条件进行重点研究。通过多方案比选分析,确定技术可行、风险可控、投资省、施工简便的推荐桥位,可为类似桥梁工程桥位选址提供参考。Aiming at complex geological conditions such as high-intensity earthquake areas,complex terrain and geological conditions,and dense development of unfavorable geological conditions,the location of important bridges that cross the river should be selected with priority-geological conditions are the key to bridge location selection.Taking the site selection of Dexing Bridge in Motuo County,Xizang as an example,combining the characteristics of the river bank of the project area and the engineering geological environmental conditions,the principle of site selection for the bridge across the river was drawn up,and the UAV assisted investigation,engineering geological mapping,engineering geophysical prospecting,and geological drilling were adopted.And other comprehensive survey methods,focusing on the study of the engineering geological conditions of the river reach,through multi-program comparison analysis,to determine the recommended bridge location that is technically feasible,risk controllable,investment-saving,and easy to construct,which can provide bridge location selection for similar bridge projects reference.

关 键 词：复杂地质条件 桥位选址 综合比选 

分 类 号：U442[建筑科学—桥梁与隧道工程] U445[交通运输工程—道路与铁道工程]