摘要
为了合理评估近接工程在施工过程中对既有隧道的不利影响,基于隧道结构本身强度控制以及轨道控制要求的变形控制标准,对近接工程施工引起的隧道变形的控制限值开展了研究。主要内容为:(1)依据相关规范,推导得到基于正态型纵向变形假设、弧形或四次曲线型纵向变形假设、荷载分布形式假设等三种隧道结构纵向变形限值的计算公式;(2)根据收敛变形极限值与截面应变的关系以及极限状态截面应力应变特征,得到隧道结构横线变形限值的计算公式;(3)依据近接工程施工引起隧道结构的变形传递关系,得到基于轨道平顺性要求的变形控制标准。
In order to reasonably evaluate the adverse effects of the proximity project on the existing buildings during the construction process,based on the strength control of the tunnel structure itself and the deformation control standard required by the track control,this paper makes the study on the control limit of tunnel deformation caused by the proximity project construction.The main contents are as follows:(1)According to the relevant specifications,the formulas for calculating the longitudinal deformation limits of three tunnel structures are derived based on the assumption of normal longitudinal deformation,the assumption of arc or quadric longitudinal deformation,and the assumption of load distribution form.(2)According to the relationship between convergence deformation limit value and cross-section strain and the stress-strain characteristics of the cross-section in the limit state,a formula for calculating the transverse deformation limit value of the tunnel structure is obtained.(3)According to the deformation transfer relation of the tunnel structure caused by the construction of the proximity project,the deformation control standard based on the requirement of track smoothness is obtained.
作者
于鹤然
韩琳
安成龙
刘建友
YU Heran;HAN Lin;AN Chenglong;LIU Jianyou(China Railway Engineering Design and Consulting Group Co.,Ltd.,Beijing 100055,China;Shandong Provincial Bureau of Geology&Mineral Exploration and Development 801 Hydrogeology and Engineering Geology Brigade,Jinan 250013,Shandong,China)
出处
《水利水电技术（中英文）》
北大核心
2023年第S01期190-196,共7页
Water Resources and Hydropower Engineering
关键词
近接工程
变形限值
高速铁路
隧道
平顺性
控制标准
proximity project
deformation limit
high-speed railway
tunnels
ride comfort
control standards
