详情

BVFF Sp�rmodell PEDRO - implementering och demonstration

项目名称：	BVFF Sp�rmodell PEDRO - implementering och demonstration
摘要：	The viscoelastic theory has been proven to be fairly suitable for description of stresses in asphalt pavements specifically dominated by viscoelastic properties under permanent deformation evolution. The goal of the project is the implementation and demonstration of a deterioration model, called PEDRO, for estimation of the permanent deformation in asphalt concrete layers under traffic loading. The main intention is to provide the industry with a tool suitable to be used in PMS systems for better planning of maintenance needs. PEDRO is a viscoelastic program that take into account the critical variables of traffic (axle loads, axle configuration, tire pressure, speed and lateral wander of traffic), asphalt material properties, road construction and the temperature gradient in the road structure. Traffic data for rut estimation can be gained from the WIM (weigh-in-motion) measurements and pavement temperatures are calculated from VViS (weather station) measurements. Rut development is calculated with respect to the aging effect of the asphalt concrete materials. The calculations may be used by clients for pavement performance specifications relating to bituminous layers and allowed traffic loading, as well as by contractors and consults for the planning of cost effective solutions for maintenance and pavement design of flexible pavements. The model is also suitable for predicting the rut development of bituminous layers that can be used in PMS systems for better planning of maintenance needs. The work includes simulations of traffic factors, truck combinations and material properties under field-like conditions for quantification of the variables effect on rutting. The calculations would be verified by comparison with measured rutting in existing test roads, observation road sections and compared with reported investigations.
资金：	0.00
资助组织：	Trafikverket, Sweden
项目负责人：	Said, Safwat
执行机构：	Statens v�g- och transportforskningsinstitut (VTI)
开始时间：	20160701
预计完成日期：	20181231
实际结束时间：	0