基于位移-应力多元信息的公路隧道智能反分析研究  

Displacement-Stress Based Multi-Information Intelligent Back Analysis in Highway Tunnels

作　　者：江宗斌[1] 姜谙男[1] 胡雪峰 刘义河 陈维 刘贵有 

机构地区：[1]大连海事大学道桥所,大连116026 [2]吉林交通规划设计院,长春130021

出　　处：《现代隧道技术》2017年第1期145-152,共8页Modern Tunnelling Technology

基　　金：国家自然科学基金项目(51079010);中央高校基本科研业务费专项资金项目(2013YB03;3132013315);大连市交通科技项目(2011-10);吉林省交通厅交通运输科技项目(2012-1-6)

摘　　要：考虑到位移反演单一控制条件的局限性,文章提出基于位移-应力的多元信息联合智能反分析方法。该方法基于差异进化算法(DE算法)的控制变量少、收敛速度快、适应性强等诸多优点,将自动化采集系统与三维数值模拟相结合,对隧道施_T过程进行实时监测、反馈、分析。文章以抚松隧道工程为例,首先根据抚松隧道的地质和施工设计特点,在ZK276+354断面处布设传感器,采集施工过程中的测点位移、应力等数据;然后建立复杂三维精细化数值模型,设计25组正交方案进行正算,通过极差分析和拟合方法建立围岩各参数与位移值、应力值之间的映射关系回归模型;联合传感器监测数据和常规监测数据进行位移-应力反分析,搜索获得准确的围岩力学参数。结果表明该联合反演方法可以为隧道施工安全提供重要参考。Considering the limitation of the single controlling condition of displacement inversion, a multi-informa- tion based intelligent back-analysis method is presented, which combines an automatic acquisition system with three-dimensional numericaX simulation to perform real-time monitoring, feedback and analysis of tunnel construc- tion based on the advantages of fewer control variables, rapid convergence and strong adaptability of difference evo- lution algorithm （DE）. Taking the Fusong tunnel as an example, sensors are set at section ZK276＋354 to collect dis- placement information during construction at the measuring points considering the geological conditions and con- struction design. Using that data, a complex 3D numerical model is established, 25 sets of orthogonal schemes are designed to conduct forward calculations, a regression model is set up to show the relationship among various param- eters of the rock mass and displacement and stress using range analysis and the fitting method, displacement-stress back analysis is carried out based on sensor data and routine monitoring data and accurate mechanical parameters of the surrounding rock are obtained.

关 键 词：自动化采集系统 联合反演 差异进化算法 三维数值模型 

分 类 号：U456.3[建筑科学—桥梁与隧道工程]