摘要
通过分析不同荷重等级下的FWD实测弯沉盆,进而比较了实测弯沉盆在反算过程中考虑土基非线性及动荷载因素时对路面各层反算模量的影响,得出三层路面结构的实测弯沉盆基于静力线弹性模型的模量反算结果会高估土基模量,低估基层模量,并解释了原因。
FWD (Falling Weight Deflectometer) deflections under different loading levels are firstly analyzed, then the back-calculated layer moduli affected by FWD deflections are compared when the nonlinearity and dynamic factors of subgrade are considered in back-calculations. A conclusion is drawn that the subgrade modulus would be overestimated and the base modulus would be underestimated by the back-calculated layer moduli of FWD deflections of the three-layer pavement structures based on the static liner elastic model. The reasons are explained too.
出处
《公路交通技术》
2005年第2期32-35,共4页
Technology of Highway and Transport
