Engineering Application Analysis for New Type of Slant Support-row Pile Foundation Excavation Support System
In deep foundation excavation engineering in soft soil,new type of slant support-row pile support system is gradually promoted and applied.Taking the slant support-double row pile system used in a foundation excavation project as an example,this paper evaluated the applicability of the support system through the analysis of the internal stress characteristics of the support system and the monitoring of the support deformation.At the same time,finite element software Z-soil was used to analyze the support system by comparing the field monitoring data.The results show that the support system can be used in foundation excavation engineering in soft soil,the axial force of slant support gradually increases during excavation of foundation excavation,the measured axial force of slant support can reach 800kN after the foundation excavation is excavated to the bottom.The system has a significant effect in controlling horizontal deformation of enclosure structure and surrounding settlement,the maximum horizontal deformation of enclosure structure is about 30mm.The new foundation excavation support system forms a relatively unified overall structure through the waist beam and the retaining pile,providing effective structural resistance,which can be widely used in foundation excavation engineering in soft soil.
foundation excavationsoft soilslant supportsrow pilessimulationenclosuresdeformation
NETL
NSTL
万方数据
