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Advanced Pavement Design Finite Element Modeling For Rigid Pavement Joints Report 1 Background Investigation
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Book Synopsis Advanced Pavement Design: Finite Element Modeling for Rigid Pavement Joints. Report 1: Background Investigation by :
Download or read book Advanced Pavement Design: Finite Element Modeling for Rigid Pavement Joints. Report 1: Background Investigation written by and published by . This book was released on 1997 with total page 107 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this research project is to develop an analytical model for rigid pavement joints that can be implemented into advanced pavement design models. This report documents a background investigation including a comprehensive review of rigid pavement joint models with particular emphasis on their joint and foundation modeling capabilities. The major historical developments in airport rigid pavement design are discussed. Closed form solutions akin to those by Westergaard were derived in this study for the maximum responses on the unloaded side of a rigid pavement slab edge capable of a degree of load transfer. When used together with Westergaard's own closed form equations for the free edge problem, the formulae derived in this study constitute a complete solution of the edge load transfer problem, recognized over the years as a critical consideration in rigid pavement design. The newly derived solution is presented in convenient form for routine engineering application and is compared to earlier finite element data. The improvement in ease of application and precision is considerable.
Book Synopsis Advanced Pavement Design by : Michael I. Hammons
Download or read book Advanced Pavement Design written by Michael I. Hammons and published by . This book was released on 1997 with total page 107 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Advanced Pavement Design by : Michael I. Hammons
Download or read book Advanced Pavement Design written by Michael I. Hammons and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Bearing Capacity of Roads, Railways and Airfields by : Andreas Loizos
Download or read book Bearing Capacity of Roads, Railways and Airfields written by Andreas Loizos and published by CRC Press. This book was released on 2017-07-20 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bearing Capacity of Roads, Railways and Airfields includes the contributions to the 10th International Conference on the Bearing Capacity of Roads, Railways and Airfields (BCRRA 2017, 28-30 June 2017, Athens, Greece). The papers cover aspects related to materials, laboratory testing, design, construction, maintenance and management systems of transport infrastructure, and focus on roads, railways and airfields. Additional aspects that concern new materials and characterization, alternative rehabilitation techniques, technological advances as well as pavement and railway track substructure sustainability are included. The contributions discuss new concepts and innovative solutions, and are concentrated but not limited on the following topics: · Unbound aggregate materials and soil properties · Bound materials characteritics, mechanical properties and testing · Effect of traffic loading · In-situ measurements techniques and monitoring · Structural evaluation · Pavement serviceability condition · Rehabilitation and maintenance issues · Geophysical assessment · Stabilization and reinforcement · Performance modeling · Environmental challenges · Life cycle assessment and sustainability Bearing Capacity of Roads, Railways and Airfields is essential reading for academics and professionals involved or interested in transport infrastructure systems, in particular roads, railways and airfields.
Book Synopsis Flexible Overlays for Rigid Pavements by : Thomas Bennert
Download or read book Flexible Overlays for Rigid Pavements written by Thomas Bennert and published by . This book was released on 2010 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Advancing Airfield Pavements by : William G. Buttlar
Download or read book Advancing Airfield Pavements written by William G. Buttlar and published by . This book was released on 2001 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt: This collection contains 31 papers presented at the 2001 Airfield Pavement Specialty Conference at the 27th International Air Transportation Conference, held in Chicago, Illinois, August 5-8, 2001.
Book Synopsis Calibrated Mechanistic Structural Analysis Procedures for Pavements: Final report by : Marshall R. Thompson
Download or read book Calibrated Mechanistic Structural Analysis Procedures for Pavements: Final report written by Marshall R. Thompson and published by . This book was released on 1992 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Rigid Pavement Analysis and Design by : K. W. Heinrichs
Download or read book Rigid Pavement Analysis and Design written by K. W. Heinrichs and published by . This book was released on 1989 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt: Evaluation of analysis models and design methods.
Book Synopsis FAA Finite Element Design Procedure for Rigid Pavements by : Edward H. Guo
Download or read book FAA Finite Element Design Procedure for Rigid Pavements written by Edward H. Guo and published by . This book was released on 2007 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: "FEDFAA, Finite Element Design-Federal Aviation Administration, is a computer program for both airport rigid and flexible pavement thickness design. NIKE3D (a general-purpose, three-dimensional finite element method (3D-FEM) computer program) is the selected engine for critical stress calculation for airport rigid pavement design. The calculated edge stresses are used in the FEDFAA failure model to determine the slab thickness. Since FEDFAA is a tool for thickness design rather than for analysis, certain program modifications and selection of available elements in NIKE3D have been made during FEDFAA development; it includes (1) selection of the nonconforming eight-node solid element to model all layers of the pavement except the subgrade, (2) introduction of the infinite element to model the infinitely deep subgrade, (3) mesh densities in vertical and horizontal directions, and (4) slab size and width of subbase extension have been determined to fit the needs of the design. A procedure has also been developed to calculate the critical stress of the pavement from the stresses calculated by NIKE3D at the element Gaussian points. Finally, the modified 3D finite element-based program was evaluated by using three criteria: (1) the model must be theoretically correct; (2) the final stress calculation engine with modifications and simplifications provides critical stress close enough to the precise one; and (3) it should be able to complete this computation under aircraft load within a few minutes. This report provides detailed descriptions for model selections, program modifications, and numerical evaluations. The report concludes that the final tool satisfies all three criteria; therefore, it is a reliable and applicable tool for airport rigid pavement design."--P. [ii].
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1991 with total page 1460 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Book Synopsis Non-linear Finite Element Analysis of Road Pavements by : B. Vuong
Download or read book Non-linear Finite Element Analysis of Road Pavements written by B. Vuong and published by . This book was released on 1986 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Truck/pavement/economic Modeling and In-situ Field Test Data Analysis Applications by : Shad M. Sargand
Download or read book Truck/pavement/economic Modeling and In-situ Field Test Data Analysis Applications written by Shad M. Sargand and published by . This book was released on 2006 with total page 109 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work is conducted to provide a complete verification and validation of four different finite element programs (ISLAB2000, JSLAB, EVREFE, and OU3D) for rigid pavement. The experimental data used in this process was collected from the Ohio SHRP Test Road (including four core sections with various geometry and pavement layers) and the Ohio University Accelerated Pavement Load Facility (three different loading conditions). The variety of the pavement sections and loading conditions makes this verification a complete and unique study. The verification outcomes are applied to optimize the joint spacing for least critical stresses within the pavement design life by using three concrete fatigue models (PCA, Huang, and Domenichini). The validation results show that the finite element models follow the general trend of the experimental data in strain, deflection, and vertical pressure. However, two issues are pointed out: stress reversals between the truck axle loads, and slab rocking. Experimental results show that moisture loss that occurred after placing concrete slabs produces a residual negative temperature gradient of -2.2oF/inch ( -0.48C°/cm). This leads to a permanent loss of support (LOS) under the pavement corners. Thus, positive gradient-based curling will only reduce the amount of LOS without eliminating it. When tested under different loading conditions, ISLAB2000 shows some inaccuracy in modeling the joints under combined traffic and environmental loadings. With the presence of built-in negative temperature gradient due to the curing of concrete, the critical tensile stresses are located at the top of the slab, and are maximized when the two truck axle loads are positioned on the two edges of the slab. This fact is confirmed experimentally; the slab cracks are observed to initiate at the top and develop towards the bottom of the pavement. The review of the three fatigue models shows that the level of tensile stress overcomes the frequency of load application. This is due to the tensile stresses resulting from the built-in negative temperature gradient. For the four pavement sections in the study, 13 ft (4.0 m) slabs had the longest design life.
Book Synopsis Validation and Calibration of Finite Element Models for Rigid Pavement Using in Situ Data by : Basel A. Abdalla
Download or read book Validation and Calibration of Finite Element Models for Rigid Pavement Using in Situ Data written by Basel A. Abdalla and published by . This book was released on 2005 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :American Association of State Highway and Transportation Officials Publisher :AASHTO ISBN 13 :156051423X Total Pages :218 pages Book Rating :4.5/5 (65 download)
Book Synopsis Mechanistic-empirical Pavement Design Guide by : American Association of State Highway and Transportation Officials
Download or read book Mechanistic-empirical Pavement Design Guide written by American Association of State Highway and Transportation Officials and published by AASHTO. This book was released on 2008 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Finite Element Study of the Rehabilitation of Faulted Portland Cement Concrete Pavements by : Balasingam Muhunthan
Download or read book Finite Element Study of the Rehabilitation of Faulted Portland Cement Concrete Pavements written by Balasingam Muhunthan and published by . This book was released on 1994 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Three-dimensional Modeling of Rigid Pavement by : David J. Beegle
Download or read book Three-dimensional Modeling of Rigid Pavement written by David J. Beegle and published by . This book was released on 1995 with total page 65 pages. Available in PDF, EPUB and Kindle. Book excerpt: A finite-element program has been developed to model the response of rigid pavement to both static loads and temperature changes. The program is fully three-dimensional and incorporates not only the common twenty-node brick element but also a thin interface element and a three-node beam element. The interface element is used in the pavement-soil interface and in the joints between slabs. The dowel bars in the joints are modeled by the beam element, which includes flexural and shear deformations. Stresses, strains, and displacements are computed for body forces, traffic loads, and temperature changes individually so that the program can be used to obtain either total stresses for design, or strain changes to compare with experimental data. The effects of varying the material properties in the pavement, base, subgrade, interfaces, and dowels are investigated to identify those parameters which most influence the solution. Results of various interface thicknesses and dowel diameters also are presented. A further study is conducted to determine the effect of average pavement temperature on the curling stresses and displacements. Finally, results from the program are compared with experimental curling displacements and stresses.
Book Synopsis Aircraft-Pavement Interaction Studies, Phase I: A Finite-Element Model of a Jointed Concrete Pavement on a Non-Linear Viscous Subgrade (Dynamic Interaction of Aircraft-Pavement Systems). by : Arthur C. Eberhardt
Download or read book Aircraft-Pavement Interaction Studies, Phase I: A Finite-Element Model of a Jointed Concrete Pavement on a Non-Linear Viscous Subgrade (Dynamic Interaction of Aircraft-Pavement Systems). written by Arthur C. Eberhardt and published by . This book was released on 1973 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: The report describes a finite-element procedure for analyzing multilayered concrete airfield pavements. An 'equivalent plate' theory is used to account for the increased stiffness provided by a stabilized base or a structural overlay. The stiffness is also adjusted to provide for the effects of various bond levels developed between the pavement layers. The finite-element pavement model was developed to aid the study of airfield-pavement interaction and especially to help analyze surface deformations resulting from multi-wheel aircraft loads. Pavement joints are given finite dimensions and treated as separate entities to permit more accurate determination of stress at an edge in a jointed pavement. Subsoil material can be modeled as a linear elastic, non-linear, or non-linear viscous material. (Modified author abstract).
