Study of the Strain Response of Asphalt Pavements on Orthotropic Steel Bridge Decks Through Field Testing and Numerical Simulation PDF Download
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Author: Guodong Zeng Publisher: ISBN: Category : Pavements, Asphalt Languages : en Pages : 19
Book Description
A composite structural system consisting of an orthotropic steel bridge deck, waterproof prime, binding course, and wearing surface is complicated. To simplify the analysis of such systems, general elastic and continuous structure theory is applied to the asphalt pavement on steel bridge decks to determine the magnitude of the strain. Large differences in mechanical results have been previously obtained in assessments of steel bridge deck pavements. Few studies have focused on the mechanical state and time-dependent response of a realistic steel bridge deck wearing surface because of the difficulty of measuring the strain of the pavement on a steel deck of a long-span bridge that is in service. This study performed static and dynamic loading tests on an actual long-span steel bridge and analyzed the characteristics of the time-dependent strain response of the bridge deck wearing surface. The results demonstrate that the asphalt wearing surface exhibited significant loading time and rate-dependent characteristics under both static and dynamic loading conditions. The test analysis results also revealed that the axle load, vehicle speed, and longitudinal slope of the bridge had significant effects on the mechanical responses of the bridge deck wearing surface. Based on a comparison between the finite element numerical simulation results and the measurements obtained from testing the actual bridge, the magnitudes of the mechanical strain responses of the wearing surface on a steel bridge deck under the dynamic wheel load of a vehicle were analyzed assuming that the wearing surface is elastic and that the elastic modulus can be determined from a four-point bending test. However, the cumulative effect of plastic deformation must be considered when analyzing the fatigue damage of a permanent wearing surface.
Author: Guodong Zeng Publisher: ISBN: Category : Pavements, Asphalt Languages : en Pages : 19
Book Description
A composite structural system consisting of an orthotropic steel bridge deck, waterproof prime, binding course, and wearing surface is complicated. To simplify the analysis of such systems, general elastic and continuous structure theory is applied to the asphalt pavement on steel bridge decks to determine the magnitude of the strain. Large differences in mechanical results have been previously obtained in assessments of steel bridge deck pavements. Few studies have focused on the mechanical state and time-dependent response of a realistic steel bridge deck wearing surface because of the difficulty of measuring the strain of the pavement on a steel deck of a long-span bridge that is in service. This study performed static and dynamic loading tests on an actual long-span steel bridge and analyzed the characteristics of the time-dependent strain response of the bridge deck wearing surface. The results demonstrate that the asphalt wearing surface exhibited significant loading time and rate-dependent characteristics under both static and dynamic loading conditions. The test analysis results also revealed that the axle load, vehicle speed, and longitudinal slope of the bridge had significant effects on the mechanical responses of the bridge deck wearing surface. Based on a comparison between the finite element numerical simulation results and the measurements obtained from testing the actual bridge, the magnitudes of the mechanical strain responses of the wearing surface on a steel bridge deck under the dynamic wheel load of a vehicle were analyzed assuming that the wearing surface is elastic and that the elastic modulus can be determined from a four-point bending test. However, the cumulative effect of plastic deformation must be considered when analyzing the fatigue damage of a permanent wearing surface.
Author: Nikolai Vatin Publisher: Springer Nature ISBN: 3030724042 Category : Technology & Engineering Languages : en Pages : 573
Book Description
This book gathers the latest advances, innovations, and applications in the field of energy, environmental and construction engineering, as presented by international researchers and engineers at the International Scientific Conference Energy, Environmental and Construction Engineering, held in St. Petersburg, Russia on November 19-20, 2020. It covers highly diverse topics, including BIM; bridges, roads and tunnels; building materials; energy efficient and green buildings; structural mechanics; fluid mechanics; measuring technologies; environmental management; power consumption management; renewable energy; smart cities; and waste management. The contributions, which were selected by means of a rigorous international peer-review process, highlight numerous exciting ideas that will spur novel research directions and foster multidisciplinary collaborations.
Author: William G. Buttlar Publisher: Springer ISBN: 3319768492 Category : Technology & Engineering Languages : en Pages : 256
Book Description
Premature cracking in asphalt pavements and overlays continues to shorten pavement lifecycles and creates significant economic and environmental burden. In response, RILEM Technical Committee TC 241-MCD on Mechanisms of Cracking and Debonding in Asphalt and Composite Pavements has conducted a State-of-the-Art Review (STAR), as detailed in this comprehensive book. Cutting-edge research performed by RILEM members and their international partners is presented, along with summaries of open research questions and recommendations for future research. This book is organized according to the theme areas of TC 241-MCD - i.e., fracture in the asphalt bulk material, interface debonding behaviour, and advanced measurement systems. This STAR is expected to serve as a long term reference for researchers and practitioners, as it contributes to a deeper fundamental understanding of the mechanisms behind cracking and debonding in asphalt concrete and composite pavement systems.
Author: Ling Cong Publisher: ISBN: Category : Asphalt concrete Languages : en Pages : 5
Book Description
This paper establishes a finite element method (FEM) model to predict rutting development of a double-layered pavement system with stone mastic asphalt as its upper layer and mastic asphalt as its bottom layer, which is widely used in orthotropic steel bridge paving. In addition, it presents the influence of pavement thickness and overloading on rutting occurring in the pavement of an orthotropic steel bridge. The results show that the MA layer contributes to an overwhelming majority of permanent deformation; furthermore, within a certain range, rutting depth increases rapidly with the rise of pavement thickness. Finally, a circular road tracking test was conducted to verify the FEM prediction. The comparison between test results and FEM results shows that the model is accurate. The results of this study can be used as reference for the design of pavement on steel decks.
Author: Xiu Liu Publisher: ISBN: Category : Bending fatigue Languages : en Pages : 12
Book Description
Bridge deck pavement layers are prone to bending fatigue and shear failure because of the continuous vibration, the vertical instant impact, and horizontal dynamic shear effect from vehicles onto the pavement system. To ensure the durability of pavement systems, a typical pavement system on a steel bridge was studied through numerical simulation and laboratory tests. The maximum tensile stress at the bottom layer and the maximum interlayer shear stress of bridge deck pavement were obtained under different loading conditions in numerical simulations. Then direct shear tests were conducted to study the fatigue characteristics of bridge deck pavement materials and structure. Finally, the fatigue resistance of the asphalt pavement system was investigated under the typical traffic level in the northeast of China. This study is helpful to design steel bridge deck pavement systems with good bending fatigue and shear resistance.
Author: X. Liu Publisher: ISBN: Category : Asphalt Languages : en Pages : 13
Book Description
The French five-point bending (5PB) beam test provides a laboratory scale test that allows studying the fatigue resistance of surfacing systems on orthotropic steel deck bridges (OSDB). The surfacing structure for OSDB in the Netherlands consists mostly of a multilayer system: top porous asphalt layer, Guss asphalt layer, steel deck, and two membrane layers between the asphalt surfacing layers. In this paper, the 5PB beam test was employed to evaluate the performance of the whole multilayer structure on a steel deck and also to evaluate the mechanical properties of both the top and bottom membrane and the influence they have on the structure. Four membrane products were used as the top and bottom membrane layers in the 5PB beams. Furthermore, in the last part of this paper, the dissipated energy was used to explain the incremental damage during the testing.
Author: Zejiao Dong Publisher: ISBN: Category : Asphalt pavement Languages : en Pages : 10
Book Description
The vertical strain of an asphalt layer is essentially important when identifying rutting mechanisms or causes in asphalt pavement with a semi-rigid base course, which is a typical pavement structure in China. As a result, three directional strain measurements (longitudinal, transverse, and vertical strain) in the field, together with a pavement rutting survey and finite element simulation, were carried out in order to clarify the causes of rutting happening in Beijing heavy-duty expressways. First, the basic principal of a fiber Bragg grating sensor is explained, followed by the introduction of sensor installation in the field. Then, a three-dimensional finite element pavement model subjected to a non-uniform moving load was established to validate the dynamic response measurement on site. Finally, based on a comprehensive analysis including a pavement condition survey, numerical simulation, and strain measurement, the rutting mechanism of heavy-duty asphalt pavement in Beijing is discussed. The results show that the occurrence of shear deformation within asphalt layers results in the rutting development, in which material weakness, modulus mismatch of asphalt layers, and heavy-duty characteristics play important roles. Optimizing asphalt layers' moduli, i.e., making them match, might make pavement bear the applied loading with integrity, thus averting the occurrence of excessive local strain, i.e., rutting.
Author: Guodong Zeng
Author: Guodong Zeng
Author: Nikolai Vatin
Author: William G. Buttlar
Author: United States. Bureau of Public Roads. Office of Research and Development
Author: Ling Cong
Author: 
Author: Xiu Liu
Author: F. F. Fondriest
Author: X. Liu
Author: Zejiao Dong