Download or read book A Study on Behavior of Integral Bridge Considering Different Types of of Backfill written by Mohammad Fadzil b Ahmat Ruslan and published by . This book was released on 2006 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt: Integral bridges are single span or multiple-span bridges with a continuous deck and a movement system composed primarily of abutments supported on flexible piles. When the deck is continuous this means expansion joint and bearing are eliminated thus minimizing the damage of Integral Bridge. However the continuous connection in Integral Bridge causing special design and analysis method needs to be carried out to understand its behavior especially with the influence of soil-structure interaction that become a main problem in the design and analysis of Integral bridge. This study is mainly focus on understanding behavior of Integral Bridge including soil-structure interaction by using 2-D Spring and Finite Element model. 3 types of analyses had been conducted which is called as Spring Analogy, Linear and Non-linear analysis. In Spring Analogy analysis, spring element had been used to idealize soil material while beam element is used to idealized structural elements of Integral Bridge. Parametric study also conducted in, this analysis that involving effect of backfill and abutment depth on behavior of Integral Bridge. In linear and Non-linear; soil media is idealized as 8-noded isoparametric and 5-noded infinite element. Abutment of Integral Bridge also idealized as 8-noded isoparametric element while piles and girder are idealized as 3- nodded beam element. In Non-Linear analysis, soil non-linear parameter is included in the analysis to see its influence to integral bridge behavior. Then analysis is conducted on single span integral bridge and result obtained by these three analyses compared. Result had shown that movement of integral bridge increase when soil stiffness is low, no backfill behind abutment and abutment depth increase. Results shown also stated that soil non-linear properties have a greater influence on behavior of Integral Bridge.
Download or read book Long Term Behavior of Integral Abutment Bridges written by Robert J. Frosch and published by Joint Transportation Research Program. This book was released on 2011-08-15 with total page 149 pages. Available in PDF, EPUB and Kindle. Book excerpt: Integral abutment (IA) construction has become the preferred method over conventional construction for use with typical highway bridges. However, the use of these structures is limited due to state mandated length and skew limitations. To expand their applicability, studies were implemented to define limitations supported by rational analysis rather than simply engineering judgment. Previous research investigations have resulted in larger length limits and an overall better understanding of these structures. However, questions still remain regarding IA behavior; specifically questions regarding long-term behavior and effects of skew. To better define the behavior of these structures, a study was implemented to specifically investigate the long term behavior of IA bridges. First, a field monitoring program was implemented to observe and understand the in-service behavior of three integral abutment bridges. The results of the field investigation were used to develop and calibrate analytical models that adequately capture the long-term behavior. Second, a single-span, quarter-scale integral abutment bridge was constructed and tested to provide insight on the behavior of highly skewed structures. From the acquired knowledge from both the field and laboratory investigations, a parametric analysis was conducted to characterize the effects of a broad range of parameters on the behavior of integral abutment bridges. This study develops an improved understanding of the overall behavior of IA bridges. Based on the results of this study, modified length and skew limitations for integral abutment bridge are proposed. In addition, modeling recommendations and guidelines have been developed to aid designers and facilitate the increased use of integral abutment bridges.
Download or read book Integral Bridges written by George L. England and published by Thomas Telford. This book was released on 2000 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work was commissioned by the Highways Agency to produce guidance for bridge designers by addressing the thermally induced soil/structure integration problem created by environmental changes of temperature and the associated cyclical displacements imposed on the granular backfill to the bridge abutments. It develops a better theoretical understanding of the cyclic performance, in particular the strain racheting in the backfill soil when in contact with a stiff structure. It also identifies the governing soil parameters and examines their influence in the interaction problem, develops numerical modelling procedures to predict interactive soil behaviour, and identifies and quantifies the controlling features of bridge structures relevant to the interaction problem.
Download or read book Internal Reinforcement of Backfill Behind Integral Bridge Abutments to Mitigate Approach Slab Distresses written by Jie Han and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Integral abutment bridges have become popular worldwide by eliminating movable shoes which are expensive to purchase, install, and maintain in conventional bridges. However, the behavior of bridge abutments subjected to air temperature changes for integral bridges is different from that of conventional bridges. Expansion and contraction of bridge girders due to temperature variations are accommodated by joints between bridge girders and abutments for conventional bridges. Expansion of bridge girders at high temperatures moves the integral bridge abutment toward its backfill, causing high lateral earth pressures behind the abutment, while contraction of bridge girders at low temperatures moves the integral bridge abutment away from its backfill, causing backfill surface settlements. The backfill behind the abutment cannot maintain its stability after the integral abutment moves away so that the backfill material within the upper portion slumps and moves downward and toward the abutment. Cyclic movements of the integral abutment due to temperature changes disturb the backfill and further reduce its self-stability when the integral abutment moves away from the backfill in the next cycle. In addition, soil erosion and compression of backfill and foundation soil can aggravate the backfill surface settlements for both integral bridges and conventional bridges. An approach slab is commonly used to provide a smooth transition between the backfill and the bridge abutment. The approach slab may lose some support from the backfill as the backfill surface settles. Consequently, more traffic loads on the approach slab are transferred to the end of the approach slab near the adjacent pavement, resulting in a differential settlement at the joint between the approach slab and the adjacent pavement. A sleeper slab has been proposed for placement underneath the joint between the approach slab and the adjacent pavement, thus minimizing this differential settlement. However, an excessive gradient may still develop for the approach slab due to the differential settlement between two ends of the approach slab. This situation may be aggravated by the concave deformation of the approach slab due to traffic loading. Therefore, backfill surface settlements and traffic loading are the two main causes for the distresses of the approach slab. These distresses may be mitigated by the use of geosynthetic reinforcement because it is expected to increase the stability of the backfill and reduce the settlement of the sleeper slab. However, the benefits of the geosynthetic reinforcement for this application are not well investigated and confirmed. Six physical model tests were conducted in this study to investigate the benefits of geogrid reinforcement in reducing the settlements of the backfill surface and the sleeper slab. In the physical models, a manual jack was used to push and pull the integral abutment to simulate the expansion and contraction of bridge girders due to temperature increase and decrease, respectively. In addition, a hydraulic cylinder was adopted to simulate traffic loading on the approach slab at four positions (Position I to Position IV) of the model abutment top related to the four seasons (spring to winter) in a year. Test results show that both the simulated seasonal temperature change and traffic loading induced backfill surface settlements. Geogrid reinforcement increased the stiffness of the soil under the sleeper slab and enhanced the sleeper slab to carry more traffic load transferred, thus reducing the traffic load transferred to the backfill behind the abutment. Consequently, the geogrids under the sleeper slab reduced the backfill surface settlements due to traffic loading. Horizontal geogrids in the backfill increased the backfill surface settlements near the abutment but reduced the settlements of the backfill away from the abutment. Geogrids with wrap-around facing significantly reduced the backfill surface settlements due to the seasonal temperature changes and traffic loading. An increase of the top geogrid length with wrap-around facing further reduced the backfill surface settlement.
Download or read book Integral and Semi Integral Bridges written by Martin P Burke Jr and published by John Wiley & Sons. This book was released on 2009-06-17 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: Worldwide, integral type bridges are being used in greater numbersin lieu of jointed bridges because of their structural simplicity,first-cost economy, and outstanding durability. In the UK and theUS states of Tennessee and Missouri, for example, the constructionof most moderate length bridges is based on the integral bridgeconcept. The state of Washington uses semi-integral bridges almostexclusively, while, depending on subfoundation characteristics, thestate of Ohio and others use a mix of these two bridge types. Integral and Semi-Integral Bridges has been written by apracticing bridge design engineer who has spent his entire careerinvolved in the origination, evaluation and design of such bridgesin the USA, where they have been in use since the late1930’s. This work shows how the analytical complexity due tothe elimination of movable joints can be minimized to negligiblelevels so that most moderate length bridges can be easily andquickly modified or replaced with either integral or semi-integralbridges. Bridge design, construction, and maintenance engineers; bridgedesign administrators; graduate level engineering students andstructural research professionals will all find this bookexceptionally informative for a wide range of highway bridgeapplications.
Download or read book Long Term Behavior of Integral Abutment Bridges written by Robert J. Frosch and published by . This book was released on 2011 with total page 3 pages. Available in PDF, EPUB and Kindle. Book excerpt: Integral abutment bridges, a type of jointless bridge, are the construction option of choice when designing highway bridges in many parts of the country. Rather than providing an expansion joint to separate the substructure from the superstructure to account to volumetric strains, an integral abutment bridge is constructed so the superstructure and substructure are continuous. The abutment is supported by a single row of piles which must account for the longitudinal movement previously accommodated by the joints. The primary advantage of an integral abutment bridge is that it is jointless (expansion joints are eliminated) and thus reduces both upfront and overall life-cycle costs. In addition to other benefits provided by integral construction, the reduction in overall cost has led to INDOT requiring all new structures within certain geometric limitation be integral. These geometric limitations, traditionally based on engineering judgment, have been modified over time based as investigations have revealed more about the behavior of integral abutment bridges. While there has been a considerable amount of research and investigation conducted on the behavior of integral abutment bridges, information is limited on both long-term behavior and the effects of highly skewed structures. Because there is a great desire for the application of these structures to be expanded, this research serves to expand the understanding of the behavior of integral abutment structures. Additionally, updated geometric limitations are recommended along with design recommendations and recommended analysis procedures for properly modeling integral abutment behavior.
Download or read book Proceedings of the 2022 Eurasian OpenSees Days written by Fabio Di Trapani and published by Springer Nature. This book was released on 2023-04-19 with total page 489 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book highlights the latest advances, innovations, and applications in the field of structural and geotechnical engineering, as presented by leading international researchers and engineers at the 2nd Eurasian Conference on OpenSees—Open System for Earthquake Engineering Simulation (EOS), held in Turin, Italy, on July 7–8, 2022. The conference was meant to give an overview on the latest developments made with the OpenSees framework as well as to present research and practical outcomes in which OpenSees plays an important role. Conference topics cover cutting-edge applications of OpenSees in the field of structural and geotechnical engineering, the development of new elements and materials, and also the development of new pre- and post-processors. The contributions, which were selected by means of a rigorous international peer-review process, present a wealth of exciting ideas that will open novel research directions and foster multidisciplinary collaboration among different specialists.
Download or read book Advances in Bridge Maintenance Safety Management and Life Cycle Performance Set of Book CD ROM written by Paulo J. da Sousa Cruz and published by CRC Press. This book was released on 2015-03-02 with total page 1126 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in bridge maintenance, safety, management and life-cycle performance contains the papers presented at IABMAS'06, the Third International Conference of the International Association for Bridge Maintenance and Safety (IABMAS), held in Porto, Portugal from 16 to 19 July, 2006.All major aspects of bridge maintenance, management, safety, and co
Download or read book The Behaviour of Backfill to Shallow Abutments of Integral Bridges written by Chee Tiong Goh and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bridge Maintenance Safety Management Resilience and Sustainability written by Fabio Biondini and published by CRC Press. This book was released on 2012-06-21 with total page 4119 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bridge Maintenance, Safety, Management, Resilience and Sustainability contains the lectures and papers presented at The Sixth International Conference on Bridge Maintenance, Safety and Management (IABMAS 2012), held in Stresa, Lake Maggiore, Italy, 8-12 July, 2012. This volume consists of a book of extended abstracts (800 pp) Extensive collection of revised expert papers on recent advances in bridge maintenance, safety, management and life-cycle performance, representing a major contribution to the knowledge base of all areas of the field.
Download or read book Design and Construction of Bridge Approaches written by Harvey E. Wahls and published by Transportation Research Board. This book was released on 1990 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt: Includes case histories of the Dumbarton Bridge (San Francisco Bay, Calif.), the Rainier Avenue Embankment (Seattle, Wash.) and the Gallows Road Grade Separation (Fairfax, Va.)
Download or read book Behavior of Concrete Integral Abutment Bridges written by Jimin Huang and published by . This book was released on 2004 with total page 726 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings of the Indian Geotechnical Conference 2022 Volume 7 written by Babu T. Jose and published by Springer Nature. This book was released on with total page 451 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Computational Analysis and Design of Bridge Structures written by Chung C. Fu and published by CRC Press. This book was released on 2014-12-11 with total page 632 pages. Available in PDF, EPUB and Kindle. Book excerpt: Gain Confidence in Modeling Techniques Used for Complicated Bridge StructuresBridge structures vary considerably in form, size, complexity, and importance. The methods for their computational analysis and design range from approximate to refined analyses, and rapidly improving computer technology has made the more refined and complex methods of ana
Download or read book Transactions of the American Society of Civil Engineers written by American Society of Civil Engineers and published by . This book was released on 2005 with total page 1176 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vols. 29-30 contain papers of the International Engineering Congress, Chicago, 1893; v. 54, pts. A-F, papers of the International Engineering Congress, St. Louis, 1904.
Download or read book Maintenance Safety Risk Management and Life Cycle Performance of Bridges written by Nigel Powers and published by CRC Press. This book was released on 2018-07-04 with total page 5447 pages. Available in PDF, EPUB and Kindle. Book excerpt: Maintenance, Safety, Risk, Management and Life-Cycle Performance of Bridges contains lectures and papers presented at the Ninth International Conference on Bridge Maintenance, Safety and Management (IABMAS 2018), held in Melbourne, Australia, 9-13 July 2018. This volume consists of a book of extended abstracts and a USB card containing the full papers of 393 contributions presented at IABMAS 2018, including the T.Y. Lin Lecture, 10 Keynote Lectures, and 382 technical papers from 40 countries. The contributions presented at IABMAS 2018 deal with the state of the art as well as emerging concepts and innovative applications related to the main aspects of bridge maintenance, safety, risk, management and life-cycle performance. Major topics include: new design methods, bridge codes, heavy vehicle and load models, bridge management systems, prediction of future traffic models, service life prediction, residual service life, sustainability and life-cycle assessments, maintenance strategies, bridge diagnostics, health monitoring, non-destructive testing, field testing, safety and serviceability, assessment and evaluation, damage identification, deterioration modelling, repair and retrofitting strategies, bridge reliability, fatigue and corrosion, extreme loads, advanced experimental simulations, and advanced computer simulations, among others. This volume provides both an up-to-date overview of the field of bridge engineering and significant contributions to the process of more rational decision-making on bridge maintenance, safety, risk, management and life-cycle performance of bridges for the purpose of enhancing the welfare of society. The Editors hope that these Proceedings will serve as a valuable reference to all concerned with bridge structure and infrastructure systems, including students, researchers and engineers from all areas of bridge engineering.
Download or read book Settlement of Bridge Approaches written by Jean-Louis Briaud and published by Transportation Research Board. This book was released on 1997 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:
