邻近地铁基坑桥梁保护措施研究  

Research on Protection Measures of Bridge Adjacent to Subway Foundation Pit

作　　者：黄柄豪 HUANG Bing-hao(China Railway 15th Bureau Group Underground Engineering Co.,Ltd.,Yangzhou 225001,China)

机构地区：[1]中铁十五局集团地下工程有限公司,扬州225001

出　　处：《价值工程》2025年第8期41-43,共3页Value Engineering

摘　　要：城市轨道交通车站基坑紧邻桥梁施工时,既要确保基坑自身安全,也要控制桥梁变形在允许范围内。本文以宁波市轨道交通6号线大剧院站为例,通过有限元软件建立三维模型,表明采取提高围护结构强度、土体加固等加固措施,可有效控制软土地区基坑开挖对桥梁的影响;针对基坑施工过程中,桥梁墩台位移较大,及时分析变形原因,通过增设伺服系统、控制附加荷载等应对措施,可显著降低桥梁的变形趋势。When the foundation pit of urban rail transit station is constructed close to the bridge,it is necessary to ensure the safety of the foundation pit itself and control the deformation of the bridge within the allowable range.Taking Grand Theatre Station of Ningbo Metro Line 6 as an example,this paper establishes a three-dimensional model by finite element software,and shows that strengthening measures such as improving the strength of the envelope structure and soil reinforcement can effectively control the influence of foundation pit excavation on the bridge in soft soil area.In view of the large displacement of bridge pier in the process of foundation pit construction,after timely analysis of deformation causes,by adding servo system,controlling additional load and other countermeasures,the deformation trend of the bridge can be significantly reduced.

关 键 词：基坑安全 软土地区 桥梁 伺服系统 附加荷载 

分 类 号：U443.15[建筑科学—桥梁与隧道工程]