海陆交互相沉积软土中超深基坑支护设计与实践  

Design and practice of ultra-deep excavations in soft soil of interactive marine and terrestrial deposit

作　　者：张峰 Zhang Feng(Hubei Huajian Construction Engineering Design Review Affairs Co.,Ltd.,Wuhan Hubei 430064,China)

机构地区：[1]湖北华建建设工程设计审查事务有限公司,湖北武汉430064

出　　处：《山西建筑》2025年第3期73-77,共5页Shanxi Architecture

摘　　要：海滨地区城市工程建设受软土工程特性影响,尤其在基坑工程中面临巨大挑战。以珠海地区海陆交互相沉积软土中某基坑工程为例,提出了“截水-降水-回灌协同控制”“非对称双翼栈桥”“非对称换撑传力框架柱”等基坑支护优化设计理念。根据基坑工程地质条件及施工部署,综合采用了卸土减载、SMW工法桩、排桩、钢筋混凝土内支撑等多种支护结构形式,并在地下水控制、土方挖运平台及非对称换撑等优化设计中进行合理的平面和空间结合,既保证了基坑支护结构及周边环境安全,又实现了土方快速挖运及地下结构的便捷施工,可为类似基坑工程的设计与施工提供参考。An ultra-deep excavation in the soft soil of interactive marine and terrestrial deposit in Zhuhai is taken as an example.The optimization design concepts for excavation supporting engineering,“truncation-dewatering-recharge cooperative control”,“asymmetric biwing construction trestle platform”and“asymmetric support force transfer frame column”are put forward.According to the engineering geological conditions and construction deployment,a variety of retaining structures such as unloading reduction,SMW pile,soldier pile wall and reinforced concrete strut are adopted.And in terms of optimizing the design of groundwater control,earthwork excavation and asymmetric support replacement,reasonable plane combination and spatial combination are carried out for the support structure.It not only ensures the safety of retaining structures and surrounding environment,but also achieves rapid excavation and transportation of earthwork and convenient construction of the basement.It may provide a good reference for other similar projects.

关 键 词：海陆交互相沉积软土 超深基坑 地下水控制 土方挖运平台 非对称换撑 

分 类 号：TU443[建筑科学—岩土工程]