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力学与实践 ›› 2004, Vol. 26 ›› Issue (2): 0-0.doi: 10.6052/1000-0992-2003-169

• 应用研究 •    

机场道面地基参数的识别与转换

张建霖 张洵安   

  1. 厦门大学建筑系 厦门大学建筑系 361005
  • 收稿日期:2003-04-29 修回日期:1900-01-01 出版日期:2004-04-10 发布日期:2004-04-10

IDENTIFICATION AND TRANSFORMATION OF THE FOUNDATION PARAMETERS FOR AIRPORT PAVEMENT

  • Received:2003-04-29 Revised:1900-01-01 Online:2004-04-10 Published:2004-04-10

摘要: 提出一种机场道面地基参数识别与转换的方法. 基于文克勒地基板理论和弹性半空间理论 的计算模型,应用最小二乘法准则,通过实测挠度与理论挠度进行拟合来识别地基回弹模量 $E_{0}$和反应模量$K$. 并依据实测点挠度相等的方法实现$E_{0}$和$K$值之间的转换. 实例 计算表明所得结果具有较好的精度.

关键词: 机场道面, 挠度, 识别, 转换

Abstract: In this paper, an identification and transformation method for foundation parameters of airport pavement is proposed. Based on the theory of Winkler foundation plate and the theory of elastic semi-space model, the theoretical deflections of the airport pavement are derived. The least square method is used to identify the resilience modulus of foundation $E_{0}$ and the response modulus $K$ by fitting the testing and theoretical deflections. The transformations from $E_{0}$ to $K$ and from $K$ to $E_{0}$ are also realized by using the equal deflection values of testing points. A testing deflection of an airport pavement is used as a numerical example. Table 2 shows the identification results of $K$ and $E_{0}$. Table 3 and Fig.2 show the high accuracy of the results by comparing the testing deflection with the identification deflection. Table 4 and Table 5 show that we may easily transform $E_{0}$ to $K$ and then transform $K$ to $E_{0}$ of the airport pavement.

Key words: airport pavement, deflection, identification, transformation