新型基坑支护体系研究

Study on the New Foundation Pit Support System

文章以某项目深基坑支护结构选型分析为研究对象,通过对比“双轴搅拌桩止水帷幕+Ⅰ40b型钢板杆桩+双重管高压旋喷锚桩体系”和“钻孔灌注桩+冠梁+锚杆支护体系”,分析其各自的优缺点,最终确定最佳的支护体系,在保证基坑安全的前提下,成功降低基坑支护施工成本,缩短施工周期,体现了新型基坑支护体系在保证基坑稳定性、缩短围护工程施工周期、降低基坑围护工程施工成本方面均有较大优势。

Based on the analysis on the type selection of the deep foundation pit support structure of a certain project,by comparing the double-axis cement-soil mixing pile water-stop curtain+I-40b steel sheet pile+double-pipe high-pressure jet grouting anchor pile system and the bored pile+crown beam+anchor pile system,the advantages and disadvantages of each system are analyzed,and the best support system is finally determined.Under the premise of ensuring the safety of the foundation pit,the construction cost of the foundation pit support is successfully reduced and the construction period is shortened.It shows that the new foundation pit support system has great advantages in ensuring the stability of foundation pit,shortening the construction period of foundation pit support engineering and reducing the construction cost of foundation pit support engineering.