摘要
路表弯沉实测值与计算值之间常常存在较大偏差,需以弯沉综合修正系数调整.现行沥青路面设计规范中,弯沉综合修正系数F缺乏对路面结构层厚度的考虑,且存在“反常现象”,即随着土基模量的增大,设计厚度也增大的现象.通过现场试验路的测试分析,提出了新的F计算式,以反映F随不同路面结构层厚的变化规律,适应不同层厚的路面结构.
Since there is remarkable difference between the deflection measured in the field and calculated according to the elastic layer theory, synthetic correction coefficient of asphalt pavement deflection F should be applied to adjust it. As for the present design specification of asphalt pavement, thickness of pavement structure is not taken into account in the F. Moreover there is ＂abnormal phenomenon＂, that is the design pavement thickness increases with the increase of resilient modulus of subgrade. A new regression formula of F is suggested on the basis of the full-scale tests in the field, which reveals that the rule of F varies with pavement thickness. Besides, it is applicable to both flexible and semi-rigid base courses.
出处
《同济大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2006年第7期895-898,共4页
Journal of Tongji University:Natural Science
基金
国家杰出青年科学基金资助项目(50325825)
关键词
沥青路面
现场试验
结构层厚度
弯沉修正系数
asphalt pavement
field test
pavement thickness
correction coefficient of deflection
