For example, steel plates are usually hot rolled, and cast steel may be used. Structural concrete structures reinforced concrete construction. Example of concrete bridge design pages iii1 to iii15 summary iii1 1 description of the bridge iii1 1. Guidelines for design and construction of decked precast, prestressed concrete girder bridges final report prepared for national cooperative highway research program transportation research board national research council r. Pdf structural bridge designchapter 5example2 of reinforce. Bridge design reinforced concrete concrete free 30day. For the bridge in this example, the design method is the equivalent strip width method, specified in pca section 4. In a large majority of cases, segmental construction has been the winner. Types and design methods of reinforced concrete bridges are presented. It is assumed the bridge will be cast on falsework. In this masters project the arch of the munkedal bridge was used as an example. Concrete culverts materials geometric constraints structural analysis design criteria detailing 6. Arched bridges are more complicated to design, but depending on the location the selection of an arch can be the best option, resulting in a beautiful bridge well. Two design examples of a simply supported slab bridge and a twospan box girder bridge are also presented.
This information ensures the correct analysis takes place. Two designs were analyzed based on such factors as cost, constructability, lifespan cost and maintenance. Evaluation of the empirical deck design for vehicular bridges georges elgharib university of north florida this masters thesis is brought to you for free and open access by the student scholarship at unf digital commons. The bridge modeler official videos can be downloaded from. Each design example is based on the 8th edition of the aashto lrfd bridge design specifications. Bridge is a inherent part of the structural engineering. Comprehensive design example for prestressed concrete. Case study design of a composite bridge 191 annex a. Multimedia package for lrfd concrete bridge design rosa p. Plan, elevation and section views are shown on the following pages. Bridge design specifications second edition, 1998, including interims for 1999 through 2002. Drawings bridge standard drawings geotechnical standard. United states design specifications typically require a 75 or 100year design life, and european specifications require a 120year design life.
For example, if substructure settlements have resulted in. Case study design of a steel bridge 165 chapter 10. Right click the excel icon for the appropriate jurisdiction. A design example followed by a load rating analysis illustrates the engineering computations performed by pgsuper. Ice manual of bridge engineering ice virtual library. The example bridge engineering handbook, 2nd edition, crc. The designer of a steel bridge has to determine the method of construction as this must be taken into account in the design of the steelwork. Comprehensive design example for prestressed concrete girder. Concretes reduced capital and life cycle costs made it the obvious choice over steel. Left click save target as and save the file to a desired folder on users computer. This thesis investigates different methods for 3d structural analysis of concrete bridges at a design stage. Overview of reinforcedconcrete boxgirder bridgedesign capability. Bridge concrete design download bridge design spreadsheet. Pdf on apr 10, 2017, nabeel albayati and others published structural bridge design chapter 5 example 2 of reinforce concrete bridge 2017 find, read and cite all the research you need on.
Following that a more detailed design of the superstructure is performed for the chosen alternative. Aashto lrfd bridge design specifications, customary u. Manual for refined analysis in bridge design and evaluation. Minimum negative flexure concrete deck reinforcement article 6. Consulting engineers chicago, illinois one of the primary advantages of segmental concrete bridge construction is the economics. Introduction this example illustrates new mexico department of transportation nmdot design procedures for a threespan prestressed concrete girder bridge.
Prestressed concrete decks are commonly used for bridges with spans between 25m and 450m and provide economic, durable and aesthetic solutions in most situations where bridges are needed. These may be supported on bearings although, due to durability issues with expansion joints and bearings, it is usually preferable to cast them integral with insitu abutments or place them as part of pre cast box culverts. The bridge design code provides detail of design principles, loads and standards to which all bridges designed by, or for, mrwa must comply. Open the excel file and the user can locate the proper.
The arch is a concrete slab that is 8 inches thick and 16 feet wide throughout the. Introduction this example is part of a series of design examples sponsored by the federal highway administration. It has been accepted for inclusion in unf graduate theses and dissertations by an authorized administrator of unf digital. Notes author staff bridgesight software sponsor bridgesight software. Evaluation of the empirical deck design for vehicular bridges. Site location is assumed to be near socorro, new mexico, with the bridge crossing a waterway on a normal. It does not, however, cover the application of these principles. Reference is made to aashtolrfd specifications article numbers throughout.
These include standard concrete cover and bar spacing dimensions, plus a variety of specific design and detailing instructions. It is also incumbent upon the designer to indicate in the contract documents usually on the drawings the construction sequence assumed in the design, both for the erection of the steelwork and for the. In the present study a cost optimum design approach of a simply supported posttensioned pc igirder bridge system is presented considering the cost of materials, labor, fabrication and installation. Steel igirder, design example, steel bridge, aashto. Department of civil and environmental engineering virginia polytechnic and state university vctir project manager. The bridge system consists of precast girders with castin situ reinforced concrete. Elremaily construction technology laboratories, inc. Limit states, combination and partial factors actions, inc.
Sclayn bridge over the river maas, which was built b y magnel in 1948, was the first continuous prestressed concrete boxgirder bridge with 2 spans of 62. Prestressed concrete psc girder superstructure bridge design example us units pdf version 1. Ohashi bridge, which is the main topic of this report, is a threespan continuous deckstiffened arch bridge. Reinforced concrete slab design using the empirical method. This standard was prepared by the standards australia committee bd090, bridge design, to supersede hb 77. The institution of structural engineers the institution of civil engineers march 2000 manual for the design of reinforced concrete building structures to ec2. The design example and commentary are intended to serve as a guide to aid bridge design engineers with the implementation of the aashtolrfd bridge design specifications. Simple span reinforced concrete tee beam bridge rating example. Simple span reinforced concrete slab bridge rating example.
The download version is a single user downloadable pdf file. Appendix c prestressed concrete bridge design example task order dtfh6102t63032 c1 appendix c calculations of creep and shrinkage effects see design step 5. This is a partially finished form diagram of a bridge that will span 99 feet. Lrfd, the usas innovative bridge design specifications. Simple span reinforced concrete slab bridge rating example vdot. These may be supported on bearings although, due to durability issues with expansion joints and bearings, it is usually preferable to cast them integral with insitu abutments or. Design of prestressed concrete igirder bridge superstructure. Designing a concrete arch bridge university of manitoba. The as 5100 series represents a revision of the 1996 hb 77 series, australian bridge design code, which contained a separate railway supplement to sections 1 to 5, together. Concrete boxgirder bridge design per aashto lrfd 2007. Download a very useful and instructive excel sheets that is specifically created to design various vital portions and sections of different types of bridges conforming to your requirement and necessities. Concrete bridge lrfd specifications parsons brinckerhoff page 1 1. The aashto lrfd bridge design specifications are intended for use in the design, evaluation.
Manual for the design of reinforced concrete building. Chapter 10 concrete finally, a design example for a reinforced concrete bridge deck is provided. Title reinforced concrete slab design using the empirical method publication no. Arched bridges are more complicated to design, but depending on the location the selection of an arch can be the best option, resulting in a beautiful bridge well integrated into the surroundings. Structural design guidelines for concrete bridge decks reinforced with corrosionresistant reinforcing bars abraham lama salomon graduate research assistant cristopher d. Apr 29, 2016 this thesis investigates different methods for 3d structural analysis of concrete bridges at a design stage. Pdf format of boring logs, and other subsurface investigation data ctp, etc.
This manual is intended for state dot bridge and structures engineers and practicing bridge engineers who are responsible for concrete bridge design and evaluation. The design specifications used in these examples is the aashto lrfd bridge design specifications. Pdf on apr 10, 2017, nabeel albayati and others published structural bridge designchapter 5example2 of reinforce concrete bridge2017 find, read. Strutandtie modeling stm for concrete structures, design examples. Eight walls spaced 11 feet apart bring total loads of 120 kips each from the stiff deck to a concrete arch below. The shortest span reinforced concrete decks are built as solid slabs.
Structural design guidelines for concrete bridge decks. Strutandtie method structural analysis design criteria 4. The benefit can, in most cases, be seen for slender and compressed concrete structures. On the other hand, standard texts cover structural analysis and design theory and application, but few are specific to bridge design in. Reinforced concrete bridges concrete reinforcing steel.
Design of concrete structures shall be based on the requirements and guidance cited. It includes some pdf documents containing explanatory examples and an overview of the strategic development of this structural code. Slab bridges are defined as structures where the deck slab also serves as the main loadcarrying component. The aim is to illuminate differences and the impact different modelling procedures and choices made in the modelling process has on the resulting design of a bridge. Gotteron bridge, fribourg, switzerland twin fixed concrete arches supported on rock.
Bridge construction how to design and construct a bridge. Effects of lhvs on road bridges and en19912 load models 209. Pgsuper uses a stateoftheart iterative design algorithm and other iterative computational procedures. Fill out the fields as appropriate based on the information in the plans. Design for continuity three concepts full section continuity possible to design for continuous behavior for superimposed dead and live loads deck only continuity only the deck is continuous spans behave as a series of simple spans no c. This design guide provides a procedural outline for the design of basic slab bridges using the lrfd code and also includes a worked example. The complete design procedure is shown in figure 21. Construction techniques for segmental concrete bridges. Machine finishing for repaired concrete deck surface. This manual has been prepared to provide washington state department of transportation wsdot bridge design engineers with a guide to the design criteria, analysis methods, and detailing procedures for the preparation of highway bridge and structure construction plans, specifications, and estimates. Design of a 170 m span bridge over the fjord thorskafjordur in iceland. One of these bridges is a twospan overpass which is part of grafton street in worcester.
Design manual for bridges and structures sixth edition, 2016 nj. Eurocodes required for concrete bridge design en 1990 en 1991 en 1992 en 1997 design analysis and section design, partial factors design approach, partial factors, foundations, earth pressures etc. Example b1 comprehensive example problem description the example problem is a three span continuous box girder bridge that is 700 ft. Structural analysis and design of concrete bridges civil. Concrete remains the most common material for bridge construction around the world, and prestressed concrete is frequently the material of choice.
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