桩锚体系在北京某超深基坑支护中的尝试应用

Pile Anchor System in Super Deep Foundation Excavation in Beijing Area Application

建筑基坑的不断加深对深基坑支护技术提出了更高的要求,桩锚体系由于施工相对简便比较适用于土质相对较硬的地区。超深基坑由于受深度影响,桩锚体系受力比较复杂,支护设计时须充分考虑各种因素的影响。北京地区超深基坑支护一般采取桩锚支护形式,本文介绍了在某超深基坑工程中采用桩锚体系进行支护的应用实例,对桩锚体系在超深基坑支护中的应用进行了总结和分析,并简要阐述了施工时的注意事项,为超深基坑支护设计提供宝贵的经验。

The deepening of the building foundation has put forward higher requirements for deep foundation excavation support,as the construction technology is relatively simple,the pile anchor system is often used in hard soil areas. For ultradeep foundation excavation,the force of pile anchor system is more complex,foundation excavation design should fully consider the influence of various factors. This paper describes an application example of a pile anchor system for deep foundation engineering,and analyzes the problem of the construction process should be noted,to provide valuable experience for the deep foundation support design.