框架桥下穿铁路工程地质勘察分析  

Geological Investigation and Analysis of Railway Engineering under Frame Bridge in Mountainous Area

作　　者：王彦阳 Wang Yanyang(China Railway Fifth Survey And Design Institute Group Co.Ltd.,Beijing 102600)

机构地区：[1]中铁第五勘察设计院集团有限公司,北京102600

出　　处：《江西建材》2023年第1期153-154,共2页Jiangxi Building Materials

摘　　要：框架桥下穿铁路在涉及铁公路建设中是一种常见的形式。文中以某框架桥为研究对象,通过钻探、原位测试、室内试验等方法,提供设计、施工需要的岩土工程勘察资料。结果表明,案例工程场地特殊性岩土为人工填土层、强风化石英岩及中风化石英岩,地基采用天然地基,基坑支护方案宜采用“桩+锚”支护。Frame bridge undercrossing railway is a common form of highway undercrossing railway in railway related highway construction.In this paper,the frame bridge in mountain area is taken as the research object,and the geotechnical investigation data required for design and construction are provided through drilling,in-situ testing,indoor testing and other methods and means.The research results show that the special rock and soil of the site are artificial fill layer,strongly weathered quartzite and moderately weathered quartzite.The foundation adopts natural foundation,and the foundation pit support scheme adopts"pile+anchor"support.

关 键 词：框架桥 特殊岩土 地基 基坑支护 

分 类 号：U442[建筑科学—桥梁与隧道工程]