侯振坤, 陈炫霖, 唐孟雄,等.预应力混凝土管桩桩端侧后注浆理论及承载特性研究进展综述[J].河南理工大学学报（自然科学版）,2025,44(1):154-165.

HOU Z K, CHEN X L, TANG M X, et al. Review of research progress on the theory and bearing characteristics of post-grouting for prestressed concrete pipe pile ends and sides[J]. Journal of Henan Polytechnic University(Natural Science) , 2025, 44(1): 154-165.

预应力混凝土管桩桩端侧后注浆理论及承载特性研究进展综述

侯振坤1, 陈炫霖1, 唐孟雄2,3, 凌造2,都喜东4, 徐峰5, 贺绍阳6, 梁仕华1

1.广东工业大学 土木与交通工程学院，广东 广州  510006;2.广州建筑股份有限公司，广东 广州  510030;3.广州市建筑集团有限公司，广东 广州  510030;4.昆明理工大学 国土资源工程学院，云南 昆明  650093;5.招商局 重庆交通科研设计院有限公司，重庆  400067;6.湖南国涛建设工程有限公司，湖南 岳阳  414000

摘要: 意义 管桩后注浆可有效改善桩-土接触界面物理力学性质，在提高管桩摩阻力、减少上部结构沉降等方面发挥着重要作用。 进展 通过对管桩后注浆工艺、后注浆理论、管桩注浆后的承载性能、管桩-注浆体-土接触界面剪切性能等进行综述，展望了管桩后注浆的发展方向。结果表明：（1）后注浆对提高中小直径管桩承载力有一定作用；注浆后，中掘法管桩的承载力一般超过了4 000 kN、静钻根植竹节桩的承载力可提升20%以上、随钻跟管桩承载力普遍超过20 000 kN。（2）现有的注浆理论推动了注浆技术的发展，虽然相关研究成果与工程实践存在差异，但可以给出浆液扩散的初步轮廓和扩散范围，为注浆设计和工程应用提供科学指导。（3）桩-浆-土接触界面的研究大多以剪切试验为载体，研究浆-土接触界面剪切性能这一宏观表象，很少涉及注浆液以注浆根系、爪牙和毛细爪牙的形式伸入土体并与土体进行关键离子交换从而提高桩-浆-土接触界面黏结强度的宏微观扩散本质。（4）现有注浆研究大多止步于注浆结果分析，较少涉及注浆机理，对浆液在地层中的流动扩散规律认识不够清晰。 结论与展望 桩侧注浆液渐进性流动过程可视化分析、注浆体三维尺寸定量表征、管桩注浆过程智能化监测、新型管桩桩侧注浆工艺研发是未来管桩桩侧后注浆发展的重要方向。

关键词:管桩;后注浆;承载特性;加固机理;注浆工艺

doi: 10.16186/j.cnki.1673-9787.2024030056

基金项目:国家自然科学基金资助项目（5237833,52208336）；广州建筑股份有限公司科技计划项目/广州市建筑集团有限公司科技计划项目（［2022］–KJ00,［2024］–KJ075）；广东省自然科学基金资助项目（2023A1515012826）；广州市科技计划项目（2024A04J3902）；广东省住房和城乡建设厅科技创新计划项目（2023-K26-564565）；云南省基础研究计划项目（202401AT070406，202101BE070001-039）

收稿日期:2024/03/20

修回日期:2024/06/14

出版日期:2025/01/02

Review of research progress on the theory and bearing characteristics of post-grouting for prestressed concrete pipe pile ends and sides

HOU Zhenkun1, CHEN Xuanlin,1 TANG Mengxiong2,3, LING Zao2,DU Xidong4, XU Feng5, HE Shaoyang6, LIANG Shihua1

1. School of Civil and Transportation Engineering， Guangdong University of Technology， Guangzhou  510006， Guangdong， China; 2. Guangzhou Construction Engineering Co.， Ltd.， Guangzhou  510030， Guangdong， China; 3. Guangzhou Municipal Construction Group Co.， Ltd.， Guangzhou  510030， Guangdong， China; 4. Faculty of Land Resources Engineering， Kunming University of Science and Technology， Kunming  65009, Yunnan， China; 5. China Merchants Chongqing Communications Research & Design Institute Co.， Ltd.， Chongqing  400067， China; 6. Hunan Guotao Construction Engineering Co.， Ltd.， Yueyang  414000， Hunan， China

Abstract: Significance Post-grouting of pipe piles is an effective technique for improving the physical and mechanical properties of the pile-soil interface， playing a significant role in enhancing the frictional resistance of pipe piles and reducing settlement of the superstructure. Progress This article reviews post-grouting technology， post-grouting theory， the bearing performance of pipe piles after grouting， and the shear performance of the pile-slurry-soil interface. Furthermore， it explores the future development directions of post-grouting for pipe piles.（1） Post-grouting effectively improves the bearing capacity of small- and medium-diameter pipe piles. After grouting， the bearing capacity of pipe piles installed using the intermediate excavation method generally exceeds 4 000 kN. Additionally， the bearing capacity of static drilling and planting bamboo joint piles increases by more than 20%， while the bearing capacity of drilling and pipe piles typically exceeds 20 000 kN. （2） Existing grouting theories have facilitated advancements in grouting technology. While discrepancies exist between research findings and engineering practices， these theories provide a preliminary outline and range for slurry diffusion， offering scientific guidance for grouting design and engineering applications. （3） Most studies on the pile-slurry-soil interface utilize shear tests to analyze macroscopic behavior， focusing on the shear performance of the pile-slurry-soil interface. However， few delve into the macro- and microscopic diffusion mechanisms of grouting fluid penetrating the soil in the form of grouting roots， claws， and capillary claws. Additionally， limited attention has been given to the ion exchange processes that enhance the bond strength of the pile-slurry-soil interface. （4） Current research predominantly focuses on analyzing grouting outcomes， with insufficient exploration of grouting mechanisms. Consequently， there remains a lack of clarity regarding the flow and diffusion behaviors of grout within the soil formation. Conclusions and Prospects Visual analysis of the progressive flow of grouting fluid along the pile side， quantitative characterization of the three-dimensional geometry of the grouting body， intelligent monitoring of the grouting process， and the development of novel pipe pile side grouting techniques are essential for advancing the future of pipe pile side post-grouting.

Key words: pipe piles; post-grouting; bearing characteristics; reinforcement mechanism; grouting technique