沈思东 汪磊 蔡智强 蔡宇辰 王殷浩 王逸涵

摘 要：轨道交通普遍具有运量大、速度快、班次密、安全舒适、准点率高、全天候、运费低和节能环保等优点，极大地方便了人们出行，是人们不可或缺的交通工具。随着中国各大城市有越来越多的地铁线路开通运营，而在运营中的隧道地段若产生过大不均匀沉降则会严重影响运营安全和隧道结构。通过开发轨道交通不均匀沉试验装置，以模拟土体不均匀沉降的情况下，测量隧道模型的变形情况、受力情况、沉降量和倾斜程度，则可以针对性地选择处理方法来解决隧道不均匀沉降问题，从而稳定轨道交通的线路结构、提高耐久性和防水性、增强轨道平顺度、提高乘客乘坐的舒适度，使轨道交通能够安全稳定地运营，以满足人们能够较好地了解土体的动力稳定性并正确判断隧道的沉降变化规律，进而为土体和隧道加固治理提供依据的应用需求，将具有良好的应用前景和社会价值。

关键词：不均匀沉降 轨道交通 隧道模型 试验装置

中图分类号：TU411.93 文献标识码：A 文章编号：1672-3791（2018）03（b）-0063-04

Abstract：Rail transit generally has the advantages of large capacity， fast speed， tight schedule，security and comfort， high punctuality rate， all-weather availability， low freight and energy saving. It is very convenient for people to travel and is an indispensable means of transportation for people. As more and more underground lines are going into operation in major cities in China， tunnels in operation will be seriously affected if there is too much uneven settlement coming into being. Through The Design of Test Device For Uneven Settlement of Rail Transit to simulate the circumstances to measure the deformation，the force condition， the settlement and the inclination of uneven soil settlement of the tunnel model. You can targetedly select the choice of treatment to solve the uneven settlement of tunnel for stabilizing the track structure of rail transit，for improving the durability the water resistance track smoothness and passengerscomfort and for the safe and stable operation of the rail transit to meet the demands for a better understanding the soil Dynamic stability and correct judgment of change rule of the tunnel. Further， The Design of Test Device For Uneven Settlement of Rail Transit provides the basis for the reinforcement and treatment of soil and tunnel and it will have a wide application prospects and social values.

Key Words： Uneven settlement； Rail transit； Tunnel model； Test device

上海是國内较早开通地铁的城市之一，在地铁一号线开通运行之始，就开始了对隧道的沉降检测，在十多年前就发现了隧道有不均匀沉降情况，且不均匀沉降越来越明显[1]。不均匀沉降会使隧道产生纵向变形，而隧道的抗纵向变形能力很脆弱，当纵向变形或曲率半径达到一定的量值后，就可能出现管片环缝张开量过大而漏水或管片纵向受拉破坏[2]。……