2017年3月上 施工技术 第46卷第5期 CONSTRUCTION TECHNOLOGY 29 D01:10.7672/sgj82017050029 大连近海回填区某项目基坑内支撑施工难点 与解决方案* 刘镇 (大连职业技术学院建筑工程学院，辽宁大连116035) [摘要]某项目位于大连市东港商务区，基坑总面积约19000m2 开挖深度16.9-19.4m 基坑支护采用咬合柱加3 道内支撑模式.该项日周围环境复杂，水文地质条件恶劣，给施工带来很大困难.施工过程中通过对该项目施工 难点的透彻分析，制订了详尽的施工方案，合理进行施工总体部暑，优化内支撑施工组织方案，并针对不良的水文 地质条件，提出降排水及撑下淤泥处理的具体办法，顺利完成工程施工.经基坑监测数据及现场巡视，基坑本体及 周围环境未发现异常. [关键词]基坑；近海回填区；内支撑；施工方案；降排水；施工技术 [中图分类号]TU753 [文献标识码]A [文章编号]1002-8498(2017)05-0029-06 Difficulties and Solutions of Some Foundation Excavation Internal Supports in Offshore Backfilled Area of Dalian Liu Zhen (School of Architecture and Civil Engineering Dalian Vocational Technical College Dalian Liaoning 116035 China) Abstract:The construction area of an engineering is in East-port Business region of Dalian.Its foundation excavation area is about 19 000m2 and excavation depth is about 16.9 ~19.4m.To support the foundation excavation there are secant piles with three internal supports.The plex surrounding environment along with harsh hydrogeological conditions brought great difficulties to the construction. Through a thorough analysis on difficulties of the construction this paper develops a detailed construction plan which includes construction overall deployment internal support organization plan drainage methods and sludge treatment under supports so that the construction can be pleted successfully. Monitoring data and on-site inspections show that the foundation excavation itself and surroundings are safe. Key words:f...
大连近海回填区某项目基坑内支撑施工难点与解决方案.pdf
