桩-网复合地基的桩土应力比影响因素分析

Column-Soil Stress Ratio Analyses in a Column-Reinforcing Netting System

桩-网复合地基是桩、网、土三者协同作用共同承担荷载的一种地基处理形式,具有桩体、垫层、排水、加筋、防护等多种功能。结合工程中对桩土应力比的实测数据,探讨了桩土应力比随桩间距、网材性质、桩长、荷载以及桩土性质等各个主要因素的基本变化规律。

The column-reinforcing netting composite ground is a soil improvement system consisting of column,reinforcing netting,and surrounding soils.This system has different functional elements,such as,column,cushion,drainage layer,reinforcement and protection.This paper presents and theoretical analysis results as well as the tested column-soil stress ratio data in the actual projects.The change of stress ratio between the column and the soil with the column spacing,reinforcement netting materials,length of the columns,loading magnitude,column materials and soil properties are carefully studied.