地铁上盖基坑围护设计及局部调整的经济性分析  

Economic Analysis of Design and Partial Adjustment of Foundation Pit of Upper Cover of Subway

作　　者：胡琦[1,2] 何品品 方华建 邓以亮 朱海娣 冉龙 HU Qi;HE Pinpin;FANG Huajian;DENG Yiliang;ZHU Haidi;RAN Long(Zhejiang University of Technology,Hangzhou,Zhejiang 310014,China;Dongtong Geotechnical Technology Limited Co.,Ltd.,Hangzhou,Zhejiang 310019,China;Hangzhou City Subway Group Co.,Ltd.,Hangzhou,Zhejiang 310006,Chin)

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310019 [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》2020年第1期12-14,17,共4页Building Construction

摘　　要：在地铁上盖开发中,为合理地设计建筑基坑的围护体系,避免施工不当对地铁轨道产生影响,介绍了HU复合型钢板桩结合预应力型钢组合支撑在地铁上方基坑工程中的应用情况。阐述了该支护体系的施工原理及工程施工质量控制要点,同时基于实际施工和经济上的考量,对围护结构做了局部调整。工程实施效果验证了该围护体系在地铁保护区域基坑工程中的实用性和可靠性。In the development of upper cover of subway,in order to reasonably design the support system of building foundation pit and avoid the influence of improper construction on subway track,the application of HU composite steel sheet pile combined with prestressed steel composite support in the foundation pit above the subway is introduced.The construction principle of the support system and the key points of construction quality control are expounded.At the same time,based on the actual construction and economic considerations,the partial adjustment is made to the support structure.The project implementation effect verifies the practicability and reliability of the support system in the foundation pit engineeting of subway protection area.

关 键 词：地铁上盖 围护结构 HU复合型钢板桩 预应力型钢组合支撑 

分 类 号：TU753[建筑科学—建筑技术科学]