渠式切割水泥土连续墙的应用和发展  

Application and development of trench cutting re-mixing deep wall

作　　者：李瑛[1] 刘兴旺[1] 何一飞 胡琦 LI Ying;LIU Xing-wang;HE Yi-fei;HU Qi(Zhejiang Institute of Architectural Design and Research,Hangzhou 310006,Zhejiang,China;Zhejiang Datong Construction Technology Co.,Ltd.,Hangzhou 310000,Zhejiang,China;Dongtong Geotechnical Technology Co.,Ltd.,Hangzhou 310000,Zhejiang,China)

机构地区：[1]浙江省建筑设计研究院,浙江杭州310006 [2]浙江大通建设科技有限公司,浙江杭州310000 [3]东通岩土科技股份有限公司,浙江杭州310000

出　　处：《地基处理》2024年第2期154-161,共8页Journal of Ground Improvement

基　　金：浙江省建设科研项目(2019K_(0)03,2021K220)。

摘　　要：作为超深、等厚、连续、可靠的截水挡土帷幕,渠式切割水泥土连续墙在国内有广泛应用。本文概括了渠式切割水泥土连续墙在国内的引进、应用和发展历程。结合对国内200多个既有应用案例的统计分析,研究了渠式切割水泥土连续墙的施工设备保有情况、成墙深度范围、常用墙体厚度和主要应用场景;罗列了渠式切割水泥土连续墙在复杂地层施工的辅助措施以及典型案例;指出了渠式切割水泥土连续墙在敏感环境微扰动施工的控制要点;介绍了渠式切割预制装配式混凝土连续墙的设计要求和用途,尤其是内插预制板材的截面设计和制造工艺;最后用工程实例表明渠式切割预制装配式混凝土连续墙同时继承了渠式切割微扰动和地下连续墙支护刚度好的特点,无论是切割成墙期间还是土方开挖期间,施工对周边环境的影响都较小。Trench cutting re-mixing deep walls(TRD)have gained extensive utilization in China as an ultra-deep,uniform-thickness,continuous,and dependable waterproof and retaining structure.This work presented a summary of the introduction,application,and developmental progression of TRD in China.A comprehensive statistical analysis of over 200 existing domestic applications was conducted,examining the distribution of construction equipment,wall depth ranges,typical wall thickness,and primary application scenarios for TRD.Auxiliary measures and illustrative cases of TRD in intricate geological strata were documented.Key control points for executing low-disturbance construction of TRD in environmentally sensitive areas were highlighted.Subsequently,the work introduced the design principles and primary applications of trench cutting assembled diaphragm walls(TAD),with a particular focus on section design and the manufacturing process of interpolated prefabricated plates.Lastly,a case study demonstrates that TAD exhibits low disturbance characteristics and substantial retaining stiffness,with minimal environmental deformations during remixing and excavation operations.

关 键 词：渠式切割 复杂地层 敏感环境 装配式连续墙 引孔 微扰动 混合泥浆 

分 类 号：TU47[建筑科学—结构工程]