Appendix a examples colorado department of transportation. Design examples of seismic retrofits of normal bridges. Manual for design and detailing of reinforced concrete to. Chapter 7 timber structures chapter 8 concrete structures and foundations chapter 9 seismic design for railway structures. 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. Each bridge is formed by steel girders acting compositely with a reinforced concrete deck slab. This publication is the second of two sci bridge design guides that reflect the rules in the eurocodes. The bridge design code provides detail of design principles, loads and standards to which all bridges designed by, or for, mrwa must comply. Bss090119991 abstract this design example illustrates the empirical design method for composite concrete bridge decks specified in article 9. Examples of improper design include insufficient reinforcing steel cover depths, excessive surface cracking, and poor drainage characteristics, such as ponding of chloridecontaminated water on a concrete bridge deck. Design research section portland cement association skokie, illinois continuous highway bridges with precast, prestressed girders have been built by a number of states. The report also covers product tolerances, cracking and repair methods, as well as plant and jobsite inspection procedures. Title reinforced concrete slab design using the empirical method publication no.
Prestressed concrete bridge beams typically use 15. 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. Design of concrete structures shall be based on the requirements and guidance cited. Mar 19, 2014 click on a datetime to view the file as it appeared at that time.
It does not, however, cover the application of these principles. The purpose of this letter is to inform you of recent decisions by the nhdot bridge design bureau regarding the above referenced subjects that affect your bridge design work for the department. Bridge construction how to design and construct a bridge. Limit states, combination and partial factors actions, inc. The bridge modeler official videos can be downloaded from. See appendix c for the recommended lrfd design specifications for abc. Impact of lrfd specifications on design of texas bridges. File sizes should not exceed 50 mb for each pdf file. Abc sample design examples the sample design calculations will be instructive in highlighting the differences between cip construction and. Truss girder rail bridge worked example 1 made by sssr date 8 structural steel design project calculation sheet checked by vk date iii ild for u 4u 5 and l 4l 5. In this masters project the arch of the munkedal bridge was used as an example. Concrete bridge the design for many road bridges answers.
Various types of loads are considered for design of bridge structures. Steel bridges ii structural steel rev design project. The preliminary geotechnical assumptions are checked and recommendations are modified, if necessary. Comprehensive design example for prestressed concrete psc girder superstructure bridge with commentary. Appendix b, pretensioned concrete u beam design guide. Concrete remains the most common material for bridge construction around the world, and prestressed concrete is frequently the material of choice. It is a companion to a publication giving general guidance on. On the other hand, standard texts cover structural analysis and design theory and application, but few are specific to bridge design in. Manual for design and detailing of reinforced concrete to the september 20 code of practice for structural use of concrete 20 2. One may ask why it was that the essential features of the now wellknown incremental launching method were only used for the first time in a prestressed concrete bridge, when the bridge over the rio. In the last decade or so, fiber reinforced polymers frp have attracted the attention of researchers and bridge owners as an alternative material for retrofitting reinforced concrete bridge elements. Types and design methods of reinforced concrete bridges are presented. Design step 5 design of superstructure prestressed. Each world has more than 20 groups with 5 puzzles each.
Concrete bridge lrfd specifications parsons brinckerhoff page 1 1. In prestressed concrete, a prestress force is applied to a concrete member and this induces an axial compression that counteracts all, or part of, the tensile stresses set up in the member by applied loading. Thus, assuming that the validity of the original premise holds true and that suitable procedures have evolved from the developmental work of project c101, all of the tools that are needed for a comprehensive procedure. The benefit can, in most cases, be seen for slender and compressed concrete structures. Analysis and design of prestressed concrete igirder bridge. The design of a girder for a bridge taken as an example and results are provided with neat sketches. Concrete basicsaims to provide a clear, concise explanation of all aspects of making quality concrete. Design of reinforced concrete bridges department of civil. For the bridge in this example, the design method is the equivalent strip width method, specified in pca section 4. Many references to section 5 of aashto have been updated to reflect the reorganization of the section. It gives two worked examples, one for a multigirder bridge and one for a ladder deck bridge. Comprehensive design example for prestressed concrete girder. This publication presents worked examples of the detailed design of two composite highway bridges.
Case study design of a concrete bridge 147 chapter 9. Volume 2 design recommendations and design examples. Bridge design guide the texas department of transportation ftp. The superstructure consists of two simple spans made. Design and construction of segmental concrete bridges for service life of 100 to 150 years steen rostam1 summary future demands for service life performance of concrete bridges pose multidisciplinary challenges on the designer and the contractor to master structural, materials, construction, and maintenance properties. Design step 2 example bridge prestressed concrete bridge design example 8 reinforced concrete deck 110 18 14 5 spa at 9 8 9 55 4 12 total width 52 roadway width figure 22 bridge crosssection 2. Bridge frames supporting precast concrete and steel beams. Rc2 reinforced concrete slab example topics covered single span reinforced concrete slab sacrificial wear thickness for a slab entered using both crosssection based and schedule based input methods from the bridge explorer create a new bridge and enter the following description data. View design of concrete bridge research papers on academia. Example on design of slab bridge design data and specifications superstructure consists of 10m slab, 36m box girder and 10m tgirder all simply supported. A design example, using the aashto specifications, is included together with several design aids. Concrete bridge design, analysis software leap bridge concrete. Substructure design chapter 7 wsdot bridge design manual m 2350.
Pdf format of boring logs, and other subsurface investigation data ctp, etc. This document consists of a comprehensive design example of a prestressed concrete girder bridge. The allowable stress is obtained by dividing either the yield stress f y or. Appendix c prestressed concrete bridge design example task order dtfh6102t63032 c1 appendix c calculations of creep and shrinkage effects see design step 5. View example in pdf format design example 2 download example as a mathcad workbook zip adhesive anchor examples. Bridge design specifications second edition, 1998, including interims for 1999 through 2002. A box beam bridge is supported by abutments and piers in the same way as a simple or continuous beam bridge.
Final foundation design the last phase completes the geotechnical report and allows the final structural design to begin. Common bridge type, especially for lowvolume roads. Prestressed concrete bridge an overview sciencedirect. Different design loads acting on bridges are explained below. Arema manual for railway engineering chapter 8 concrete structures and foundations chapter 9 seismic design for railway structures. Notes author staff bridgesight software sponsor bridgesight software. Matthews date 10601 page b1 design criteria develop design criteria for the selected bridge concept. Recommended practice for precast prestressed concrete.
These loads and their combinations decides the safety of the bridge construction during its use under all circumstances. This document presents guidelines for designing bridges in texas. The arch is a concrete slab that is 8 inches thick and 16 feet wide throughout the. Structures design office lrfd design examples files pdfs. The purpose of this document is to illustrate how the pgsuper computer program performs its computations. Box shapes 187k, pdf deck bulbtees 164k, pdf double tee bridge beams 157k, pdf next bridge beams 104k, pdf pci zone 6 curved spliced girders 1. The first example is of multigirder form, the second is of ladderdeck form. Reinforced concrete bridges theory and design of bridges. Design of gfrp reinforcement for concrete bridge structural components valentino rinaldi university of miami, rinaldi. Structures design office lrfd design examples files pdfs fdot. Fundamentals of prestressed concrete bridge with solved example introduction. Typically, wires or tendons are stretched and then blocked at the ends creating compressive stresses throughout the members entire crosssection.
This design example was not intended to follow the design and detailing practices of any. In this article, the various types of formwork and falsework needed to construct a concrete bridge are examined. Only the design of slab bridge will be used for illustration. Bilal elariss first semester 20042005 objectives the objective of the project is. Pgsuper is a computer program for the design, analysis, and load rating of precast, prestressed concrete girder bridges. Codycross is an addictive game developed by fanatee. The following is a summary of the major changes that have been incorporated into the slab bridge design guide. By 1982, the sunshine skyway bridge in tampa, florida, had set a new record for concrete bridges, with a main span of 365 m 1,200 ft. Design of concrete bridge research papers academia. Planet earth, under the sea, inventions, seasons, circus, transports and culinary arts. Fundamentals of prestressed concrete bridge with solved. View example in pdf format design example 1 download example as a mathcad workbook zip castinplace flat slab bridge design. Girders may be posttensioned or pretensioned and also precast or castinsitu. The type of reinforced or prestressed concrete bridge deck depends mainly on the functional requirements, the structural form, and the main span length of the construction.
Are you looking for neverending fun in this exciting logicbrain app. Hueste, mohammed safi uddin adil, mohsin adnan, and peter b. Lifecycle cost many factors affect the life of a bridge beyond whether or not the superstructure is comprised of steel or concretesuch as design, type and frequency of traffic, environment, weather, maintenance and changes in usage and conditions over time. Foreword the reinforced concrete design manual sp1711 is intended to provide guidance and assistance to professionals engaged in the design of castinplace reinforced concrete structures. If you continue to use the site without changing your cookie settings, we assume you are fine with our cookies and the way we use them. Figure 9 advertisement for the soukup brothers new casting and fabricating plant, prestressed concrete, inc. Pci has developed preliminary design charts in accordance with the. We use cookies to provide you with the best possible user experience. Various concrete equations were updated in aashto to include a concrete. The examples cover the principal steps in the verification of the. For example in design of steel structures, this allowable stress will be in the elastic range of the material and will be less than the yield stress f y.
As a part of this study, a computer program to perform the necessary calculations for the design of simple span ishaped beams of pretensioned prestressed concrete for use in highway and railroad. Leap bridge concrete is design and analysis software for concrete bridges of all types. Recommended citation rinaldi, valentino, design of gfrp reinforcement for concrete bridge structural components 2015. The choice of bridge type depends not only on the general parameters of the scheme such as typical spans, overall deck area, clearance requirements, alignment and the overall aesthetic, but also on the particular and local parameters of the site, many of which are. Eight walls spaced 11 feet apart bring total loads of 120 kips each from the stiff deck to a concrete arch below. E6 free body diagram a if, the unit load is in between l 0 and l 4 i. Bridge design free download as powerpoint presentation. Prestressed box girders and general prestressed concrete guidelines are also included in this chapter. Comprehensive design example for prestressed concrete.
Figure 8 minnesotas first major prestressedconcrete bridge, bridge 9053, carrying 94th street over interstate 35w in bloomington, minnesota. With this manuscript, any bridge engineer can get an insight into implementation of moricelittle method in the design of a prestressed girder. Machine finishing for repaired concrete deck surface 3. The first reinforced concrete design manual formerly titled aci design handbook was developed in accordance with the design provisions of 1963 aci 318 building code by aci. Bridge design to eurocodes worked examples worked examples presented at the workshop bridge design to eurocodes, vienna, 46 october 2010 support to the implementation, harmonization and further development of the eurocodes y. Wsdot standard prestressed concrete girder types 5 79. Retrofit of rectangular bridge columns using cfrp wrapping. Introduction this example illustrates new mexico department of transportation nmdot design procedures for a threespan prestressed concrete girder bridge.
Concrete basicsaddresses the needs of unskilled and semiskilled persons undertaking general concreting projects including home and handyman projects. In addition to general design guidance and information on detailing practices, this section contains three design examples. University college of engineering graduation project ii. Concrete bridge design handbook click here concrete design strength is 4 ksi, and air entrained for more complete coverage, see crsi design handbook. Design manual for bridges and structures sixth edition, 2016 nj. Wisdot bridge manual chapter 19 prestressed concrete january 2020 193 19. Design examples 84 the following style is used when referring to a section of aci 318 for which a change or insertion is proposed by the provisions. Analytical results and the ensuing impact on the design of this bridge are discussed. Policy support documents resulting from the work of the jrc and cooperation with partners. Additionally, the virtisopis file used for rating the bridge is to be sent to the nmdot bridge design bureau. Reinforced concrete slab design using the empirical method. Structural concrete structures reinforced concrete construction. Prestressed concrete refers to concrete that has applied stresses induced into the member. Design step 5 design of superstructure prestressed concrete.
This is a partially finished form diagram of a bridge that will span 99 feet. Concrete structures, in the lrfd bridge design specifications. 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. Design a simply supported prestressed concrete y beam which carries a 150mm thick concrete slab and 100mm of surfacing, together with a nominal live load udl of 10. Site location is assumed to be near socorro, new mexico, with the bridge crossing a waterway on a normal. Examples of bridges of this type built by the states of tennessee and california are presented in figs. For example, steel plates are usually hot rolled, and cast steel may be used for bearing. The design loads should be considered properly for perfect design of bridge. The prestressed concrete beam, s an element in a structural system, is one member which requires such calculations. Late in the 1970s, cablestayed construction raised the bar for concrete bridges. In the field of bridge engineering, the introduction of prestressed concrete has aided the construction of. A multispan prestressed concrete bridge is considered as a practical example.