土岩复合地层深基坑吊脚桩变形分析及优化设计

Deformation Analysis and Optimization Design of End-Suspended Piles of Deep Foundation Pit in Soil-Rock Composite Strata

以深圳地铁12号线为研究对象,通过数值模拟对土岩复合地层地区深基坑工程吊脚桩的结构变形进行研究,当桩底嵌入不同地层时,在保证基坑安全的前提下,得到岩肩厚度及高度的最经济尺寸。这将为深圳地铁后续工程设计提供有效指导,并为类似土岩复合地层地区深基坑支护提供借鉴。

This study focused on the deep foundation pit engineering of the Shenzhen Metro Line 12,analyzing the structural deformation of end-suspended piles in soil-rock composite strata through numerical simulation.The research determined the most economical dimensions of rock shoulder thickness and height when the pile bottom was embedded in different strata,while ensuring the safety of the foundation pit.The findings will significantly contribute to the future metro design in Shenzhen metro construction and provide a reference for construction in similar geological locations.