A 3D approach for evaluating the structural condition of jointed plain concrete pavements in a pavement management context

  • In Germany, expenditure for the construction of new and maintenance of existing federal highways is currently at a record level of EUR 8 billion per year. In connection with the planned infrastructure policy reforms it is necessary to further develop the planning tools for dimensioning and substance assessment of road structures in order to increase the efficiency of construction measures. The stress caused by traffic is of central importance here. Since unevenness in the road surface has a significant influence on the dynamic part of the wheel load, dynamic effects must be explicitly taken into account. As a result, increasing unevenness can lead to higher dynamic loads and, in the context of a corresponding number of wheel rollovers, to disproportionate damage to the road structure. In general, a shock factor is taken into account during dimensioning, which is to be considered as a function of vehicle suspension, load, speed and evenness. This approach is not sufficient for concrete road structures executed as slabs. In the normal case, only the periodically occurring individual event of a transverse contraction joint, superimposed by irreversible and/or temporary slab deformations, can lead to a significant increase in the dynamic wheel load. In addition, the existing slab deformations are tied to many boundary conditions and can therefore vary greatly in their characteristics. For the further development of methods for dimensioning and residual substance assessment with regard to their accuracy, a three-dimensional slab-specific view of the road surface is therefore appropriate. In this paper, a suitable measuring method for three-dimensional surface laser scanning and an algorithm for the classification of slab deformations are presented.

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Metadaten
Author:Marko Wieland, Maximilian Sesselmann
Parent Title (English):13th International Symposium on Concrete Roads 2018
Publisher:FGSV Verlag
Place of publication:Köln
Document Type:Conference Proceeding
Language:English
Date of Publication (online):2019/10/29
Date of first publication:2019/10/29
Publishing institution:Bundesanstalt für Straßenwesen (BASt)
Contributing corporation:Lehmann + Partner GmbH
Release Date:2019/10/29
Tag:Belastung; Betonstraße (Oberbau); Decke (Straße); Festigkeit; Laser; Platte; Steifigkeit; Verformung; Zustandsbewertung
Condition survey; Deformation; Laser; Load; Rigid pavement; Slab; Stiffness; Strength (mater); Surfacing
Number of pages:15
Institutes:Abteilung Straßenbautechnik
Dewey Decimal Classification:6 Technik, Medizin, angewandte Wissenschaften / 62 Ingenieurwissenschaften / 620 Ingenieurwissenschaften und zugeordnete Tätigkeiten
Licence (German):License LogoBASt

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