天津高银117大厦深基坑斜抛撑施工关键技术.pdf

施工技术 2016年10月上 CONSTRUCTION TECHNOLOGY 第45卷第19期 D01:10.7672/js2016190004 天津高银117大厦深基坑斜抛撑施工关键技术 侯玉杰，刘磊，叶建，范宗臣，胥光 (中建三局集团有限公司工程总承包公司，湖北武汉430064) [摘要]以天津高银117大厦深基坑工程施工为例，针对斜抛撑设计及施工，介绍了一种深基坑支护形式.在圆环 支撑非对称受力及紧邻建筑红线的条件下，采用斜抛撑及活络头设计，有效地控制了基坑变形.工程实践表明，该 技术缩短了工期，节约了成本，为今后斜抛撑施工提供了借鉴. [关键词]高层建筑：深基坑；支护；斜抛撑；圆环支撑；施工技术 [中图分类号]TU753 [文献标识码]A[文章编号]1002-8498(2016)19-0004-03 Key Construction Technology of Inclined Brace of Deep Foundation Excavation of Tianjin Gaoyin 117 Building Hou Yujie Liu Lei Ye Jian Fan Zongchen Xu Guang General Construction Company of CCTEB Group Co.Lad.Wuhan Hubei 430064 China) Abstract:Taking the construction of deep foundation excavation of Tianjin Gaoyin 117 building as an example through the design and construction of the inclined brace this paper introduces a kind of deep foundation excavation support form.Under the condition of the non-symmetrical force of ring support and the limitation of the red line of the building this project adopts inclined brace and adjustable head design effectively control the deformation.Based on engineering practice this technology shortens the construction period and saves the construction cost and provides reference for the construction of the inclined brace in the future. Key words:tall buildings;deep foundation excavation;supports;inclined brace;ring support;construction 0引言 挖总量210万m3 基坑内2道混凝土内支撑混凝土 随着我国经济不断发展，各地的城市化不断加用量约2万m3. 速推进，超高层建筑数量与日俱增，深基坑工程的 本工程位于天津市西青区海泰东西大街和海 技术难度不断增大.如何在有限的用地空间内灵 泰南北大街交口处.基坑东侧距海泰南北大街 活设计基坑支护体系，做到缩短工期、节省...