复杂地层超长桩后压浆施工工法探究与实践  

Exploration and practice of post-pressure grouting construction method for extra-long piles in complex strata

作　　者：戴武林 卫宫羽 Dai Wulin;Wei Gongyu(Shenzhen Huadi Geotechnical Engineering Co.,Ltd.,Shenzhen Guangdong 518000,China;China Construction Southwest Survey and Design Institute Co.,Ltd.,Chengdu Sichuan 610041,China)

机构地区：[1]深圳市华地岩土工程有限公司,广东深圳518000 [2]中国建筑西南勘察设计研究院有限公司,四川成都610041

出　　处：《山西建筑》2025年第3期82-86,共5页Shanxi Architecture

摘　　要：在复杂地质环境下,超长桩施工难度大、造价高,基桩的单桩承载力特征值无法满足设计要求。后压浆灌注技术可以通过在施工灌注桩时预先安装注浆管,极大提高桩端承载力及桩与土之间的摩阻力。以广东省深圳市南山某一项目为例,探讨了在复杂地质条件下抗拔桩的后压浆施工工艺,桩基承载能力得到大幅提升,在有限桩长下满足了设计要求。In the complex geological environment,the construction of super-long piles is difficult and costly.Post grouting technology can greatly improve the bearing capacity of pile end and the friction resistance between pile and soil by instal-ling grouting pipe in advance during the construction of cast-in-place pile.Taking a project in Nanshan,Shenzhen,Guangdong as an example,the post grouting construction technology of uplift pile under complex geological conditions is discussed and the engineering practice is carried out.The test results show that the bearing capacity of pile foundation is greatly improved after adopting post grouting technology,and the design requirements are met under limited pile length.

关 键 词：复杂地层 超长桩 后压浆 注浆管 

分 类 号：TU473.1[建筑科学—结构工程]