摘要
基于宁波地铁4号线类矩形盾构隧道区间段地表沉降实测数据,采用Peck公式并结合最小二乘法和回归分析方法,得到最大地表沉降实测值S_(max_实测)、最大地表沉降拟合值S_(max_拟合)、沉降槽宽度i、宽度系数K及地层损失率Vl统计结果,并分析了宽度系数K、地层损失率Vl以及修正系数α和β的分布规律,确定了建议值。
Based on the measured data of ground settlement caused by quasi-rectangular shield of Ningbo Metro Line 4,this paper uses Peck formula,least square method and regression analysis method to obtain the measured data of the maximum ground settlement S_(max_实测),fitted value of the maximum ground settlement S_(max_拟合),width of settlement groove i,width coefficient K and formation loss rate Vl,and analyzes the width coefficient K,formation loss rate Vl and distribution rules of correction coefficient α and β.The recommended values are determined finally.
作者
陶思海
TAO Sihai(Shanghai Geological&Mineral Engineering Investigation Co.,Ltd.,Shanghai 200065,China)
出处
《路基工程》
2021年第2期153-157,共5页
Subgrade Engineering
关键词
软土
类矩形盾构
地表沉降
PECK公式
地层损失率
soft ground
quasi-rectangular shield
ground settlement
Peck formula
formation loss rate
