建阳某深基坑支护结构优化设计

Optimization Design for Deep Foundation Supporting Structure in Jianyang

建阳某深基坑工程支护设计,基坑采取放坡开挖、土钉墙支护和土钉-桩锚联合支护等多种支护形式,采用极限平衡法、弹性地基梁法等传统经典计算方法对各种支护方案进行相应设计,并与Plaxis有限元数值分析进行对比分析,以沉降、变形与安全性为控制目标进行相应优化设计。优化后,土方开挖量减少,土钉长度变短,围护桩配筋减少,达到节省工程造价、满足安全稳定要求。

This design aimed directly at the Jianyang supporting of deep foundation pit, slope excavation, soil nailing wall and soil nailing joint anchor-pile supporting form are adopted in this excavation Traditional classical method of the limit equilibrium method and elastic foundation beam method is adopted, and compared with the Plaxis finite element analysis, on the control of the settlement, deformation and the security to make corresponding optimization design, the amount of excavation, soil nail length, pile reinforcement can be reduced and the project cost is saved, also can meet safety and stability requirements