基于位移-应力多元信息的公路隧道智能反分析研究

发布时间：2018-05-07 09:57

本文选题：自动化采集系统 + 联合反演　；参考：《现代隧道技术》2017年01期

【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。
[Abstract]:Considering the limitation of single control condition of displacement inversion, this paper presents a joint intelligent inverse analysis method based on multi-information of displacement and stress. Based on the advantages of the differential evolution algorithm (DE), such as less control variables, fast convergence speed and strong adaptability, the automatic acquisition system is combined with 3D numerical simulation to monitor, feedback and analyze the tunneling T process in real time. This paper takes the Fusong tunnel project as an example. Firstly, according to the geological and construction design characteristics of Fusong tunnel, sensors are arranged at the section of ZK276 354 to collect the data of displacement and stress in the construction process. Then, the complex three-dimensional fine numerical model is established, 25 groups of orthogonal schemes are designed to carry out positive calculation, and the regression model of mapping relationship between the parameters of surrounding rock and displacement value and stress value is established by means of range analysis and fitting method. Displacement-stress inverse analysis is carried out by combining sensor monitoring data with conventional monitoring data, and accurate mechanical parameters of surrounding rock are obtained. The results show that the joint inversion method can provide an important reference for tunnel construction safety.
【作者单位】：大连海事大学道桥所;吉林交通规划设计院;
【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)
【分类号】：U456.3

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