机场刚性道面结构材料参数的动态反演研究  

The Research on Dynamic Back-analysis of Parameters of Airport Rigid Pavement Properties

作　　者：张力[1] 邢耀忠[2] 陈向明[2] 

机构地区：[1]西北工业大学新校区建设办公室,西安710072 [2]西北工业大学力学与土木建筑学院,西安710072

出　　处：《河北工业大学学报》2008年第4期66-70,共5页Journal of Hebei University of Technology

摘　　要：以运动荷载下粘弹性地基上矩形板系统为基础,考虑板间接缝传力的边界条件,利用变分法、贝蒂功互等功定理等数学方法求解运动荷载作用下的道面板的弯沉解析解.以实测动弯沉和理论计算动弯沉为基础,应用非线性最小二乘原理和奇异值分解技术建立刚性道面结构参数的动态反演方法.通过工程实例验证本文理论,可为机场道面的无损检测和承载力评价提供理论依据.A new model of the airplane rigid pavement system-the rectangular slab which is based on semi-infinite viscoelastic foundation to moving load and considering the boundary condition of the plate joint force is established, to research the dynamic back-analysis of pavement properties. By using of the method of separation of variables and Betty＇s reciprocal theorem of work, the dynamic solution of joint plate can be derived. Through nondestructive testing, using the nonlinear least square optimization technique and singular value decomposition, the back-calculating method for estimating property parameters of rigid pavement is established. The theoretical results and test results show this method is an efficient calculation approach that converges quickly for a wide range of initial values of module. It provides the theoretical foundation for nondestructive measurement and the evaluation of load-carrying capacity.

关 键 词：机场刚性道面 粘弹性地基 无损检测 动态反演 

分 类 号：V351.1[航空宇航科学与技术—人机与环境工程]