带挑梁的邻近地铁隧道铁路加固支撑基础  

Railway Reinforced Support Foundation with Cantilever Beam Adjacent to Subway Tunnel

作　　者：郑伟 ZHENG Wei(Anhui Railway Construction Engineering Co.,Ltd.,Bengbu,Anhui,233040,China)

机构地区：[1]安徽铁建工程有限公司,安徽蚌埠233040

出　　处：《建材技术与应用》2023年第1期61-64,共4页Research and Application of Building Materials

基　　金：中国铁路上海局集团公司2022年度科研课题;上海上铁建筑工程(集团)有限公司2022年度科研课题。

摘　　要：在既有地铁隧道附近施工铁路D型便梁支撑基础时,当桩与地铁隧道外边缘水平净距≮3.0 m、两侧桩中心距≯24.12 m时,可采用传统的便梁支撑基础;当桩与地铁隧道外边缘水平净距≮3.0 m、两侧桩中心距>24.12 m时,支撑基础由人工挖孔桩、挑梁与系梁组成,其两侧系梁之间的中心距<24.12 m,以便能够架设常见规格的D型便梁。During the construction of the supporting foundation of the D-type walkway beam near the existing subway tunnel,when the pile and subway tunnel outside the edge of the horizontal net distance is not less than 3.0 m,both sides of the pile center distance is more than 24.12 m,the traditional beam support foundation can be used.When the pile and the subway tunnel outer edge horizontal net distance is not less than 3.0 m,both sides of the pile center distance is more than 24.12 m,the used supporting foundation is composed of hand-dug pile,beam and tie beam,and the center distance between the two sides of the beam is less than 24.12 m,so as to be able to set up common specifications of the D-type beam.

关 键 词：地铁隧道 铁路 D型便梁 支撑基础 

分 类 号：TU445.6[建筑科学—岩土工程]