岩土工程学报2026，Vol.48Issue(4)：816-824,9.DOI:10.11779/CJGE20241293
预应力低碳工法桩技术与基坑工程应用
Prestressed mixing wall technology and its application in excavation engineering
摘要
Abstract
In recent years,excavation engineering in China has expanded at an unprecedented rate,posing significant challenges concerning excessive material consumption and muck disposal.Mitigating construction costs and minimizing resource wastage have emerged as critical concerns in this field.As an efficient foundation pit support technique,construction piles have experienced significant advancements and are increasingly utilized in engineering practice.This study introduces the Prestressed Mixing Wall(PMW)technology,which utilizes muck to form piles,followed by the insertion of externally prestressed H-shaped steel to enhance resistance to deformation.Laboratory loading tests are conducted on H-shaped steel sections to investigate the deformation behavior of PMW.Theoretical formulas are derived to quantify internal forces and deformations,and field applications are carried out to validate the technology's effectiveness.The results indicate that as prestress increases,the deformation of the H-shaped steel in the direction of the applied force is significantly reduced,even reaching a state of"zero"deformation,while the axial force increment in prestressed steel strands remains independent of the applied prestress.Field applications further validate the strong deformation control capability of PMW,allowing for the reduction or even elimination of additional support structures,which substantially reduces engineering costs and construction duration while facilitating the efficient utilization of muck.These advantages highlight its notable low-carbon,economic,and environmental benefits,underscoring its broad potential for widespread application.关键词
预应力/流态固化土/工法桩/变形/轴力/基坑支护Key words
prestress/fluid solidified soil/construction pile/deformation/axial force/foundation pit support分类
建筑与水利引用本文复制引用
余巍,刘松玉,朱明群,王超,谷庆,刘义怀,潘宇翔..预应力低碳工法桩技术与基坑工程应用[J].岩土工程学报,2026,48(4):816-824,9.基金项目
国家自然科学基金面上项目(42277146)This work was supported by the National Natural Science Foundation of China(Grant No.42277146). （42277146）
