鸡鸣三省大桥工程地质特征分析  

Analysis of the Geological Characteristics of the Jimingsansheng Bridge Project

作　　者：龚睿 刘洋 肖维 陈东升 GONG Rui;LIU Yang;XIAO Wei;CHEN Dongsheng(Sichuan Highway Planning,Survey,Design and Research Institute Co.,Ltd.,Chengdu,Sichuan Province,610041 Chian;School of Energy and Power Engineering,Xihua University,Chengdu,Sichuan Province,610039 China)

机构地区：[1]四川省公路规划勘察设计研究院有限公司,四川成都610041 [2]西华大学能源与动力工程学院,四川成都610039

出　　处：《科技资讯》2024年第11期144-146,共3页Science & Technology Information

摘　　要：鸡鸣三省大桥位于四川、云南、贵州三省交界处,全长286.4 m,主桥为上承式钢筋混凝土箱形拱桥,桥面宽11.5 m,净跨径为180 m。桥梁位于高山峡谷区,受构造影响,桥址区内危岩体、岩体卸荷带、岩溶、基岩顺层滑坡等不良地质发育。据场地地质结构和桥梁形式特征,分析桥梁基础稳定性与滑坡稳定性,对桥位的工程地质特征尤其是地震灾害发育特征进行研究,为桥梁设计提供了依据与参数,并保障桥梁安全。The Jimingsansheng Bridge is situated at the junction of Sichuan Province,Yunnan Province and Gui⁃zhou Province with a total length of 286.4 meters,and its main bridge is an deck-type reinforced concrete box arch bridge with a deck width of 11.5 meters and a clear span of 180 meters.This bridge is located in a alpine and gorge area,and influenced by its structures,adverse geology such as the dangerous rock mass,the rock mass unloading belt,the karst landform and the bedrock bedding landslide is developed in the bridge site area.According to the geological structure of the site and the formal characteristics of the bridge,this paper analyzes the foundation stabil⁃ity and landslide stability of the bridge,and studies the engineering geological characteristics of the bridge site,par⁃ticularly the development features of seismic disasters,which provides a basis and parameters for bridge design and ensures bridge safety.

关 键 词：鸡鸣三省大桥 基岩顺层滑坡 卸荷带 高山峡谷 

分 类 号：U442.2[建筑科学—桥梁与隧道工程]