摘要
为了验证桩锚支护体系在站房深基坑中的可实施性和可靠性,以株洲站改扩建工程站房深基坑支护结构施工为背景,从设计和施工的角度,详细介绍了大型铁路站房深基坑工程中桩锚支护结构的应用情况,并对施工过程中基坑支护体系的监测数据进行重点分析。结果表明:1)采用顶部放坡+桩锚支护的设计及施工方案,可以较好地控制地层变形,保障邻近既有建筑物的安全,为深基坑工程在城市复杂环境条件下的顺利实施提供宝贵的设计和施工经验;2)邻近既有建筑物会加剧基坑沉降变形,同时基坑开挖过程中引起的地表差异沉降会导致建筑物出现轻微偏转。本文成果可为类似地质条件下的站房深基坑防护施工提供借鉴与参考。
In order to verify the feasibility and reliability of the pile anchor support system in the deep foundation pit of the station building,based on the construction of the deep foundation pit support structure of the station buildings of the Zhuzhou Station reconstruction and expansion project,the application of the pile anchor support structure in the deep foundation pit project of the large railway station building is introduced in detail from the perspective of design and construction,and the monitoring data of the foundation pit support system during the construction process is analyzed.The results show that:1)The design and construction scheme of top grading+pile anchor support can better control the formation deformation,ensure the safety of adjacent existing buildings,and provide valuable design and construction experience for the smooth implementation of deep foundation pit projects under complex urban environmental conditions.2)Adjacent existing buildings will aggravate the settlement deformation of the foundation pit,and the surface differential settlement caused by the excavation of the foundation pit will lead to slight deflection of the buildings.The results can provide reference for the protection construction of deep foundation pit of station buildings under similar geological conditions.
作者
张智豪
ZHANG Zhihao(China Railway Guangzhou Group Co.,Ltd.,Changsha 410000,Hunan,China)
出处
《工程建设》
2025年第8期64-69,86,共7页
Engineering Construction
关键词
深基坑
桩锚支护
施工监测
deep foundation pit
pile anchor support
construction monitoring
