不规则深大基坑支护方案优化研究

Study of Optimal Design Scheme for Irregular Deep and Large Foundation Pit

形状不规则的深大基坑支护设计方案的优化选择关系到整个项目的开发进度、工程造价。文章依据南京江北某地块基坑支护项目为依托,对不规则深大基坑的支护方案排桩+满堂支撑、排桩+锚索/大角撑、排桩+抛撑三种设计方案进行了探讨,并利用理正深基坑和有限元软件进行设计和计算分析。最后,综合对比各个设计方案,并结合工程造价和工期,给出了最佳方案,为今后类似工程提供一定的参考意义。

For large-scale deep foundation pit engineering,the supporting scheme is related to the development progress of the project.Based on a project in Nanjing,three design schemes of row piles+support,row piles+anchor cable/corner brace and row piles+inclined?brace are discussed detaily.Considering the impact of construction time、cost and environmental protection capability,the optimal selection of design scheme is analyzed.The analysis method can be used as a reference for similar projects.