复杂地质下预应力型钢支撑支护技术

The Support Technology for Prestressed Section Steel under Complex Geology

随着国家城市化进程深入推进,基坑工程向着更深更广的方向发展,传统的混凝土支撑体系受其施工方式限制,造成其他工序作业不便,相比之下预应力型钢支撑支护技术能有效弥补混凝土支撑体系的不足。文章结合杭州新浦嘉园项目,对比分析两种支撑支护技术的优缺点,介绍了预应力型钢支撑支护原理、布置原则,同时结合项目监测结果,验证了预应力型钢支撑支护技术既能保证深基坑工程施工安全,也能达到提质增效的效果。

With the process of national urbanization,foundation pit engineering is developing towards a deeper and larger direction.The traditional concrete support system is limited by its construction mode,causing inconvenience in other processes.In contrast,the prestressed steel section support can effectively make up for the shortage of concrete support system.Combining with Hangzhou Xinpu Jiayuan Project,this paper compares and analyzes the advantages and disadvantages of the two support forms,introduces the principle and layout principle of prestressed section steel support.Combining with the project monitoring results,it verifies that the prestressed steel section support can not only guarantee the construction safety of deep foundation pit engineering,but also improve the quality and efficiency.