土工基础

土工基础 ›› 2023, Vol. 37 ›› Issue (4): 685-688.

• 测试技术 • 上一篇    下一篇

TRD工法围护结构施工监测与分析

张振1，吕启兵1，董亚博1，罗明福1，王斌彬2   

  1. （1.中国水利水电第七工程局有限公司，成都 610213；2.东华大学环境科学与工程学院，上海 201620）
  • 收稿日期:2022-09-08 修回日期:2022-09-16 出版日期:2023-08-31 发布日期:2023-09-01
  • 作者简介:张振（1982-），男，高级工程师，研究方向为城市轨道交通工程。

TRD Method Construction Monitoring and Analysis of a Deep Excavation Supporting Structure

ZHANG Zhen1, LV Qibing1, DONG Yabo1, LUO Mingfu1, WANG Binbin2   

  1. (1.Power China Sinohydro Bureau 7 Co. Ltd., Chengdu 610213； 2.College of Environmental Science and Engineering, Donghua University, Shanghai 201620)
  • Received:2022-09-08 Revised:2022-09-16 Online:2023-08-31 Published:2023-09-01

摘要： 针对TRD工法特点，以雄安新区北京大兴国际机场快线一标段明挖区间深基坑工程为例，对TRD工法围护结构进行研究。基于现场监测资料，分析了TRD水泥土连续墙顶水平和竖向位移、TRD水泥土连续墙体水平位移等监测数据。结果表明：从基坑开挖到底板浇筑完成的过程中，TRD水泥土连续墙变形低于警戒值。墙体变形大小与基坑开挖深度有关，随着基坑开挖深度的加大，TRD连续墙水平位移呈先增大后逐渐趋于平缓的趋势。工程实践证明TRD水泥土连续墙的挡土性能和止水效果较为优异。

关键词: TRD工法, 围护结构, 现场监测, 数据分析

Abstract: Based on the characteristics of Trench Cutting Remixing Deep Wall (TRD) construction method, this paper presents a case history of constructing a deep excavation supporting structure in the cut and cover metro tunnel of Xiong’an New District of Beijing Daxing International Airport Express Line Section 1. The supporting structure using TRD construction method is studied. Both the monitored data of the horizontal and vertical displacement of the TRD constructed cementsoil continuous wall and the performance of the top and horizontal displacement of TRD formed wall are analyzed. The results show that the deformation of the TRD formed cementsoil continuous wall is lower than the allowable value for the supporting structure. The deformation of the wall is related to the depth of foundation excavation. With the increase of the excavation depth, the horizontal displacement of the TRD formed diaphragm wall increases at first and then gradually tends to be stable. Engineering practice proves that the TRD formed cementsoil continuous wall has a good soil retaining performance and water stopping effect.

Key words: TRD Method, Supporting Structure, Site monitoring, Data Analysis

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