MJS工艺超前封底与浅埋钢板桩联合技术在基坑支护中的应用

The Application of Combined Technology of MJS Advanced Bottom Sealing and Shallow Buried Steel Sheet Piles in Foundation Pit Support

文章首先介绍了常规高压旋喷注浆加固与浅埋钢板桩联合基坑支护的局限性,然后分析了MJS工艺超前封底与浅埋钢板桩联合基坑支护原理和优势,最后以南京市浦口区主城区市政道路综合整治工程为例,对MJS工艺与浅埋钢板桩联合技术在基坑支护中的应用进行分析。工程实践表明,该方法不仅具备较高的安全性,对周边环境及邻近结构物的影响也优于其他方案,能获得较良好的施工效果,具有一定的应用价值。

Firstly,the limitations of conventional high-pressure rotary jet grouting reinforcement and shallow buried steel sheet pile combined foundation pit support are introduced.Then,the principles and advantages of MJS advanced bottom sealing and shallow buried steel sheet pile combined foundation pit support are analyzed.Finally,taking the comprehensive renovation project of municipal roads in the main urban area of Pukou District,Nanjing as an example,the application of MJS process and shallow buried steel sheet pile combined technology in foundation pit support is analyzed.The engineering practice shows that this method not only has high safety,but also has better influence on the surrounding environment and adjacent structures than other schemes.It can obtain better construction effect and has certain application value.