沥青路面路基有效回弹模量确定方法

Determination method for effective resilience moduli of bituminous pavement and bituminous roadbed

Abstract

本发明公开了一种沥青路面路基有效回弹模量确定方法,按照下述步骤进行:一、确定不同季节路基强度参数;二、建立不同季节路基回弹模量对其承载能力影响程度的关系;三、确定不同季节变化的路基有效回弹模量。本发明基于弯沉的路基有效回弹模量,考虑不同季节路基含水量不同对路基路面设计弯沉的影响,准确反映了路基强度季节性变化的规律,从而使路基设计参数的确定更为合理,能够更好的指导沥青路面结构设计和路基路面防排水设计。根据路基路面的交互影响关系,即可确定不同季节路基回弹模量对路面设计弯沉的影响程度,从而确定路基有效回弹模量。
The invention discloses a determination method for effective resilience moduli of a bituminous pavement and a bituminous roadbed. The method comprises the following steps that: I, roadbed strength parameters in different seasons are determined; II, a relation between each roadbed resilience moduli in different seasons and a corresponding influence degree of the roadbed resilience moduli on the carrying capacity of the roadbed is established; and III, the effective resilience modulus of the roadbed variable in the different seasons is determined. Based on the effective resilience modulus of the roadbed with flexure, an influence of different water contents of the roadbed in the different seasons on the roadbed and pavement design flexure can be considered, and a rule of seasonal variation of the roadbed strength can be accurately reflected, so that the determination of design parameters of the roadbed is reasonable, and a bituminous pavement structure design and a roadbed and pavement waterproof and drainage design can be guided well. According to a mutual influence relation of the roadbed and the pavement, the influence degree of the roadbed resilience moduli in the different seasons on the pavement design flexure can be determined, so that the effective resilience modulus of the roadbed can be determined.

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