隧道开挖引起的路面沉降预测及数值分析  

Prediction and Numerical Analysis of Pavement Settlement Due to Tunnel Excavation

作　　者：贾晓云[1,2] 林宝龙[3] 

机构地区：[1]西南交通大学土木工程学院,成都610031 [2]石家庄铁道学院土木工程分院,石家庄050043 [3]石家庄铁路职业技术学院,石家庄050041

出　　处：《路基工程》2010年第3期108-110,共3页Subgrade Engineering

摘　　要：采用Peck公式对南水北调中线下穿高速公路段暗涵施工所允许的地表沉降进行预测,确定65 mm为工程允许的地表沉降标准。提出了双中洞、多分部的暗挖施工方法,并用FLAC-3D进行数值模拟。实测表明该法可将路面沉降控制在60 mm以下,能够满足隧道施工安全和环境控制要求。This paper predicts allowable surface settlement in buried culvert construction of undercrossing expressway in the central line of South-to-North Water Diversion Project with Peck formula,and defines 65mm as the allowable surface settlement standard.It also puts forward undercut methods with double-mid-cavern and multi-subsection,and conducts numerical simulation with FLAC-3D.It is indicated from site measurement that this method can control pavement settlement within 60mm to satisfy the requirement of tunnelling safety and environmental control.

关 键 词：南水北调 水工隧洞 暗挖施工 路面沉降 数值分析 

分 类 号：U455[建筑科学—桥梁与隧道工程] P642.26[交通运输工程—道路与铁道工程]