The main goal of this study was to assess methodologies for the determination of base structural layer coefficients (SLCs) in Florida base materials. The aim was to streamline the traditional empirical and observationally based technique for determining layer coefficients either by an accelerated loading process or by the computer simulation of pavement performance. The paper describes a methodology in which the structural numbers (SN) of two paired test sections are used to backcalculate the unknown SLC. The SNs are determined from the AASHTO performance equation using a prediction of pavement performance from the University of Florida top-down cracking (TDC) model. The paper presents a positive application of the methodology for two test sections in Louisiana and two sections in Florida.

这项研究的主要目的是评估确定佛罗里达州基础材料中基础结构层系数（SLC）的方法。目的是简化传统的基于经验和基于观察的技术，通过加速加载过程或通过路面性能的计算机模拟来确定层系数。本文介绍了一种方法，其中使用两个成对的测试部分的结构编号（SN）来反算未知的SLC。SN由AASHTO性能方程式确定，使用佛罗里达大学自上而下裂缝（TDC）模型的路面性能预测。本文介绍了该方法在路易斯安那州的两个测试部分和佛罗里达州的两个部分中的积极应用。