机场复合道面结构行为理论及其应用研究

项目名称： 机场复合道面结构行为理论及其应用研究

项目编号： No.U1433201

项目类型： 联合基金项目

立项/批准年度： 2015

项目学科： 无线电电子学、电信技术

项目作者： 凌建明

作者单位： 同济大学

项目金额： 250万元

中文摘要： 机场复合道面兼具优秀的承载能力和功能性能，是跑道加铺的主流形式，也是长寿命道面的研发方向。传统“经验法”难以控制复合道面的多种损坏，无法适应大型飞机的多轮动态、高胎压、大水平力荷载作用，“力学—经验”设计法正成为研究热点和发展趋势，其核心是复合道面结构行为及其相关理论。本项目面向机场复合道面，研究包括微观损伤、中/小尺度变形与开裂、足尺结构响应的多尺度试验方法；考虑复合道面几何、材料和接触非线性以及大型飞机多轮动态荷载与温度的耦合作用，构建复合道面三维有限元精细模型，并实证校验；实施多尺度试验和精细化仿真，揭示飞机荷载与温度耦合作用下复合道面的空间结构响应规律，分析建立其结构行为的即时表达模型和演变方程；以此为基础，研究道面损伤非线性分时叠加原理，提出复合道面结构多指标“力学—经验”设计方法。从而解决复合道面结构行为模拟、解析、表达和预估等科学问题，并为大规模机场复合道面建设提供技术支持。

中文关键词： 机场复合道面；结构行为；多尺度试验；三维有限元；“力学—经验”设计方法

英文摘要： Composite pavement is the primary structure of pavement overlay and new long-life pavement in airport for its excellent bearing capacity and performance. The traditional “Empirical” design method was limited in controlling the various failure patterns of composite pavement and it could not support the application of multiple tires, high tire pressure and high horizontal stress of large aircrafts. Thus, the “Mechanistic-Empirical” structure design method is becoming the developing trend, whose cores are structure behavior and its related theories of composite pavement. In this project, the multi-scale test methods for airport composite pavement will be developed including micro damage test, small- or medium-scale deformation and cracking test, full-scale structure responses test. A 3D finite element fine model will be established considering the coupling action between landing gear load and temperature, and the nonlinear characteristics of geometry, material and interface of composite pavement. It will be calibrated by the full-scale test data before applied. After multi-scale testing and numerical simulating, the spatial structure responses of composite pavement under the coupling action between landing gear load and temperature will be explored. Then series of functions will be presented to describe the instant and long-term behavior of composite pavement structure. On the basis of the structure behavior, a new “Mechanistic-Empirical” structure design method for airport composite pavement will be developed, which is based on pavement damage time-sharing cumulating theory. Thus the whole solution to simulating, expressing, forecasting and application of structure behavior of airport composite pavement will be put forward. It will give powerful support for a large amount of pavement overlay and new composite pavement construction in China.

英文关键词： Airport composite pavement;Structure behavior;Multi-scale test;3D finite element;Mechanistic-Empirical design method