北京城市绿心公共建筑及共享配套设施深基坑不同工艺水泥土墙的对比试验  

CONTRAST TESTS IN SITU OF CEMENT-SOIL WALLS BY TRD OR SMC IN THE FOUNDATION EXCAVATION OF LARGE PUBLIC BUILDINGS AND THEIR JOINT FACILITIES FOR THE CENTRAL GREEN IN BEIJING

作　　者：徐寒[1] 张振 田丁 XU Han;ZHANG Zhen;TIAN Ding(Central Research Institute of Building and Construction Co.,Ltd.,MCC Group,Beijing 100088,China;Beijing Investment and Construction Group Co.,Ltd.,Beijing 101117,China)

机构地区：[1]中冶建筑研究总院有限公司,北京100088 [2]北京城市副中心投资建设集团有限公司,北京101117

出　　处：《工业建筑》2021年第8期148-153,共6页Industrial Construction

摘　　要：针对北京城市副中心的标志性建筑及重点配套项目基坑周边有保护历史遗迹、国家大剧院台湖舞美艺术中心剧场下穿通道及地铁线路的情况,考虑到场地地下水位高、开挖工程量大、槽底标高变化大、工程地质和水文地质条件复杂等因素,在北京地区首次采用了渠式切割深层搅拌地下水泥土连续墙工法(TRD工法)施做止水帷幕。通过对深层铣削搅拌工法(SMC工法)止水帷幕与TRD工法止水帷幕的比较表明:TRD工法水泥土搅拌墙接缝处和转角处垂直度控制较好,止水效果能够达到预期,SMC水泥土搅拌墙接缝处和转角处控制垂直度仍待进一步研究和改进。In the light of many monuments and metro lines around the excavated foundation of the large public landmark buildings and their joint facilities for the Central Green in Beijing Municipal Administrative Center,the underground pedestrian passage of the Grand Theatre for Beijing Municipal Administrative Center passing below it,as well as in considerations of complex engineering geology and hydrogeology and the complexity of construction,the cement-soil walls by the trench cutting remixing deep wall method(TRD)were proposed to be adopted in Beijing first to control groundwater of the project.Comparisons of sealing effects for the cement-soil walls by TRD and the soil-mixing with cutters(SMC)showed curtains by TRD had better performances of isolating groundwater than that by SMC.The construction processes of SMC needed to be improved further.

关 键 词：城市副中心 深基坑 渠式切割深层搅拌地下水泥土连续墙工法 深层铣削搅拌工法 

分 类 号：TU753[建筑科学—建筑技术科学]