Peck 公式在软土地区类矩形盾构隧道施工中的应用  

Application of Peck Formula in Quasi-rectangular Shield Tunnel Construction in Soft Ground

作　　者：陶思海 TAO Sihai(Shanghai Geological&Mineral Engineering Investigation Co.,Ltd.,Shanghai 200065,China)

机构地区：[1]上海地矿工程勘察有限公司,上海200065

出　　处：《路基工程》2021年第2期153-157,共5页Subgrade Engineering

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.

关 键 词：软土 类矩形盾构 地表沉降 PECK公式 地层损失率 

分 类 号：TU433[建筑科学—岩土工程]