预应力型钢组合支撑在大跨度基坑中的应用  

Application of Prestressed Section Steel Composite Support in Large-span Foundation Pit

作　　者：胡琦[1,2] 何品品 方华建 娄泽峰 黄天明 冉龙 HU Qi;HE Pinpin;FANG Huajian;LOU Zefeng;HUANG Tianming;RAN Long(Zhejiang University of Technology,Hangzhou,Zhejiang 310014,China;Dongtong Geotechnical Technology Limited Co.,Ltd.,Hangzhou,Zhejiang 310020,China;Hangzhou City Subway Group Co.,Ltd.,Hangzhou,Zhejiang 310006,China)

机构地区：[1]浙江工业大学,浙江杭州310014 [2]东通岩土科技股份有限公司,浙江杭州310020 [3]杭州市地铁集团有限责任公司,浙江杭州310006

出　　处：《建筑施工》2019年第12期2109-2110,2126,共3页Building Construction

摘　　要：以杭州某基坑支护工程为例,论述了预应力型钢组合支撑技术的施工要点,并与传统钢筋混凝土支撑技术进行比较,指出其具有能够重复使用、工期短以及造价低等优势。最后,根据基坑监测结果,验证了其在基坑支护上的先进性和实用性。Taking a foundation pit support project in Hangzhou as an example, this paper discusses the key construction points of the composite support technology of prestressed section steel, compares it with the traditional reinforced concrete support technology, and points out the advantages of reusability, short construction period and low cost. Finally, according to the monitoring results of the foundation pit, the progressiveness and practicability of such foundation pit support are verified.

关 键 词：预应力型钢组合支撑 基坑工程 支护结构 施工要点 

分 类 号：TU753.1[建筑科学—建筑技术科学]