乌鲁木齐国际机场北区改扩建工程航站区高填方地基处理设计与实践  

Design and implementation of high fill foundation treatment for the terminal zone in the north area expansion and renovation project of Urumqi International Airport

作　　者：吴江斌[1] 王卫东 胡耘[1] 梁永辉 WU Jiangbin;WANG Weidong;HU Yun;LIANG Yonghui(East China Architecture Design&Research Institute Co.,Ltd.,Shanghai 200011,China;Arcplus Group,Shanghai 200041,China;Shanghai Shenyuan Geotechnical Engineering Co.,Ltd.,Shanghai 200011,China)

机构地区：[1]华东建筑设计研究院有限公司,上海200011 [2]华东建筑集团股份有限公司,上海200041 [3]上海申元岩土工程有限公司,上海200011

出　　处：《地基处理》2025年第1期1-9,35,共10页Journal of Ground Improvement

基　　金：云南省科技厅科技计划(202303AA080012)。

摘　　要：乌鲁木齐国际机场北区改扩建工程位于天山山脉北麓荒漠冲积带边缘,航站区工程面积76.5万m^(2),高填方土石方量800万m^(3),最大填方高度25 m。针对高填方填筑体量大、功能分区多、与地下结构关系复杂等技术难题,从新疆戈壁卵砾石混合土填料的工程特性和大型三轴试验入手,开展了沉降经验公式、改进的高填方沉降分层总和法、基于邓肯-张模型的三维数值分析方法等3种高填方沉降分析方法研究,计算结果与实测较接近。提出了“两期填筑和三阶段”总体建设工序,及精细化的填料配置和填筑工艺技术,分层碾压结合强夯补强措施较好解决了高填方工后沉降控制难题。采用了核心区换填和大面积改进强夯处理技术,解决了大面积超低含水量、强湿陷性粉土处理问题。一系列创新设计理念和工艺保障了高填方回填质量,实现了变形控制与工期目标,为航站楼主体结构施工创造了有利条件,为类似高填方地基上的大型工程设计提供了范例。The expansion and renovation project of Urumqi International Airport north area is located on the edge of the desert alluvial belt at the northern foot of the Tianshan Mountains.The terminal area covers an area of approximately 765000 m^(2),with a high fill volume of 8000000 m^(3)and a maximum fill height of 25 m.Focusing on the technical challenges such as large volume of high fill,multiple functional zones,and complex interactions with underground structures,the study of engineering characteristics and large-scale triaxial tests on gravel mixed soil fillers in Gobi Desert of Xinjiang were conducted.Based on this project,research on three kinds of settlement analysis methods were conducted,including the empirical formula method,modified layer-summation method,and three-dimensional numerical analysis method based on the Duncan-Chang model,and the calculated results were in close agreement with the measured settlement values.The overall construction process of“two-steps filling and three stages”as well as refined filling material and technology were proposed,and the combination of layered rolling and dynamic compaction effectively solved the problem of post construction settlement control in high filled area.Additionally,core area soil replacement and improved dynamic compaction technology were adopted in this project,which solved the problem of large-scale low moisture content collapsible silt treatment.The implementation of a series of innovative design concepts and advanced technologies ensured high-quality fill backfilling,achieved effective deformation control,met critical project scheduling milestones,and ultimately established optimal conditions for the construction of the terminal building’s primary structural components.This project serves as a benchmark for the design of large-scale projects on similar high fill foundations.

关 键 词：高填方 戈壁卵砾石混合土填料 湿陷性粉土 填方与结构同步建设 变形控制 

分 类 号：TU47[建筑科学—结构工程]