湘潭市某复合土钉墙基坑支护设计及监测分析

Analysis on Monitoring of Excavation Bracing and Retaining by Composite Soil Nailing Wall in Xiangtan

为研究湘潭地区复合土钉墙基坑变形规律及其对周边环境的影响,根据湘潭市某基坑工程制定相应的监测方案并进行了现场监测,分析了现场监测数据,总结出复合土钉墙基坑支护结构的变形规律及对周边环境的影响,为工程后续施工提供安全保障,也为其他类似工程提供有益的参考.结果表明,基坑开挖采取多种复合土钉墙结合的支护形式,能够有效应对基坑周边复杂环境,通过监测掌握支护结构受力变形的即时信息,在设计和施工中灵活改变复合土钉墙布置及组合形式,使基坑支护更加科学、合理、经济.

For study on the impact of foundation pit and surroundings around excavation of composite soil nailing, the monitoring project had been designated and the field monitoring data had been analyzed based on a practical deep excavation in Xiangtan, the deformation regularity of foundation pit support structure and the impact of surroundings had been reflected in the results, which could be referenced in follow-up con- struction or other similar projects. The results showed that it is very useful to protect complicated environ- ment around excavation by different kinds of composite soil nailing, and it is also effective and economical to exchange combining forms of soil nailing wall in design.