This foundation pit project is located in the flood plain area of the Yangtze River in Hexi, Nanjing, with complicated geological conditions, high underground water level, ultra-thick sand layer and rock entry. The fo...This foundation pit project is located in the flood plain area of the Yangtze River in Hexi, Nanjing, with complicated geological conditions, high underground water level, ultra-thick sand layer and rock entry. The foundation pit adopts a 50m-deep TRD underground water soil mixing wall and a 15m-deep MJS construction pile as the waterproof curtain outside the foundation pit. This paper discusses the construction technology of TRD combined with MJS waterproof curtain and the technical measures such as design optimization, equipment configuration, main process parameters, construction points, construction difficulties and treatment measures in the construction process, which largely solves the difficult problems of crossing ultra-deep fine sand layer, gravel layer and eventually entering rock, and the construction is difficult, and achieves good construction effect.展开更多
文章结合某地铁车站渠式切割深层搅拌地下连续墙(trench cutting re-mixing deep wall,TRD)施工工法的工程实例,分析了TRD工法的原理、特点及施工流程,探讨了其施工质量的关键影响因素,包括地质条件、设备性能、施工参数控制和人员操作...文章结合某地铁车站渠式切割深层搅拌地下连续墙(trench cutting re-mixing deep wall,TRD)施工工法的工程实例,分析了TRD工法的原理、特点及施工流程,探讨了其施工质量的关键影响因素,包括地质条件、设备性能、施工参数控制和人员操作水平等。在此基础上,提出了施工准备阶段、施工阶段和质量验收阶段的质量控制措施。研究结果表明,实施严格的质量控制措施可有效提高TRD工法施工质量,为深基坑止水工程的安全性和可靠性提供保障。展开更多
TRD(trench cutting re-mixing deep wall)工法构建的等厚度水泥土搅拌墙具有地层适用性广、墙体均质性好、隔水性能可靠等特点。详细介绍了TRD工法构建的等厚度水泥土搅拌墙围护结构的承载变形特性、设计方法、施工关键技术、检测方法...TRD(trench cutting re-mixing deep wall)工法构建的等厚度水泥土搅拌墙具有地层适用性广、墙体均质性好、隔水性能可靠等特点。详细介绍了TRD工法构建的等厚度水泥土搅拌墙围护结构的承载变形特性、设计方法、施工关键技术、检测方法,以及作为基坑型钢水泥土搅拌墙围护结构和超深隔水帷幕的工程实践。展开更多
TRD(Trench cutting Re-mixing Deep wall)工法构建的等厚度水泥土搅拌墙可内插型钢作为基坑止水和挡土结构,在基坑工程实践中得到了越来越广泛的应用。作为两种刚度差异较大材料的组合结构,TRD工法型钢水泥土搅拌墙承载变形性状和作用...TRD(Trench cutting Re-mixing Deep wall)工法构建的等厚度水泥土搅拌墙可内插型钢作为基坑止水和挡土结构,在基坑工程实践中得到了越来越广泛的应用。作为两种刚度差异较大材料的组合结构,TRD工法型钢水泥土搅拌墙承载变形性状和作用机理较为复杂,现阶段的工程实践尚缺乏理论计算的支持。以上海典型软土地层为背景,采用三维"m"法对型钢和水泥土的相互作用和承载变形性状进行了理论分析,主要通过对其变形、弯矩分担和局部抗剪的规律研究,对工程设计中的相关问题予以明确,并结合实测工程墙体变形进行了对比。展开更多
文摘This foundation pit project is located in the flood plain area of the Yangtze River in Hexi, Nanjing, with complicated geological conditions, high underground water level, ultra-thick sand layer and rock entry. The foundation pit adopts a 50m-deep TRD underground water soil mixing wall and a 15m-deep MJS construction pile as the waterproof curtain outside the foundation pit. This paper discusses the construction technology of TRD combined with MJS waterproof curtain and the technical measures such as design optimization, equipment configuration, main process parameters, construction points, construction difficulties and treatment measures in the construction process, which largely solves the difficult problems of crossing ultra-deep fine sand layer, gravel layer and eventually entering rock, and the construction is difficult, and achieves good construction effect.
文摘文章结合某地铁车站渠式切割深层搅拌地下连续墙(trench cutting re-mixing deep wall,TRD)施工工法的工程实例,分析了TRD工法的原理、特点及施工流程,探讨了其施工质量的关键影响因素,包括地质条件、设备性能、施工参数控制和人员操作水平等。在此基础上,提出了施工准备阶段、施工阶段和质量验收阶段的质量控制措施。研究结果表明,实施严格的质量控制措施可有效提高TRD工法施工质量,为深基坑止水工程的安全性和可靠性提供保障。
文摘TRD(trench cutting re-mixing deep wall)工法构建的等厚度水泥土搅拌墙具有地层适用性广、墙体均质性好、隔水性能可靠等特点。详细介绍了TRD工法构建的等厚度水泥土搅拌墙围护结构的承载变形特性、设计方法、施工关键技术、检测方法,以及作为基坑型钢水泥土搅拌墙围护结构和超深隔水帷幕的工程实践。
文摘TRD(Trench cutting Re-mixing Deep wall)工法构建的等厚度水泥土搅拌墙可内插型钢作为基坑止水和挡土结构,在基坑工程实践中得到了越来越广泛的应用。作为两种刚度差异较大材料的组合结构,TRD工法型钢水泥土搅拌墙承载变形性状和作用机理较为复杂,现阶段的工程实践尚缺乏理论计算的支持。以上海典型软土地层为背景,采用三维"m"法对型钢和水泥土的相互作用和承载变形性状进行了理论分析,主要通过对其变形、弯矩分担和局部抗剪的规律研究,对工程设计中的相关问题予以明确,并结合实测工程墙体变形进行了对比。
