Concrete bridge design example pdf doc

The hl93 live load is the design live load for bridges designed under load and resistance factor design lrfd. Aashto lrfd bridge design specifications, fifth edition with 2011 interim revisions. Guide specifications for the design of concrete bridge beams prestressed with carbon fiberreinforced polymer cfrp systems, 1st edition, washington, dc, usa. Comprehensive design example for prestressed concrete psc. Strutandtie modeling stm for concrete structures, design examples. This helps in transmitting the forces formed by the loads to the below substructures. Types and design methods of reinforced concrete bridges are presented.

Annacis, british columbia, canada fraser river construction duration. Pgsuper is a computer program for the design, analysis, and load rating of precast, prestressed concrete girder bridges. Design and construction of a reinforcement free concrete bridge deck on precast bulb tee girders article pdf available january 2007 with 1,779 reads how we measure reads. They are precaste so that they can be easily connected together in order to reach to the required length fig 1. Engineered solutions structural plate design guide 7. In addition, some bats may be hidden from sight in wider cracks in the concrete and behind deteriorating concrete sections in the ceiling or walls. The bdm is a dynamic document, which constantly changes because of the. Design step 5 design of superstructure prestressed concrete bridge design example task order dtfh6102t63032 512 dc parapet 4. A sample analytical method for bearing resistance calculation. The arch is a concrete slab that is 8 inches thick and 16 feet wide throughout the.

Design a concrete mix for construction of an elevated water tank. Section a6 flexural resistance sample calculation from opis to compare with. Bibm and ermco are delighted to make these authoritative documents available to design engineers, software developers and all others with an interest in promoting excellence in concrete design throughout europe. Bridge design free download as powerpoint presentation. Lrfd bridge design manual bdm colorado department of. The electronic version of this document is available at. In addition to general design guidance and information on detailing practices, this section contains three design examples. Bridge design reinforced concrete concrete free 30day.

These recommendations in pdf ebook, reported by the joint aciasce committee 343 on concrete bridge design, provide currently acceptable guidelinesfor the analysis and design of reinforced, prestressed, and partially prestressed concrete bridges based on the state of the art at the rime of writing the report. Manual for design and detailing of reinforced concrete to the. Long term prestress shortening and shrinkage shall be included in the bearing movement calculation. Bridge construction, project execution plan details of how a bridge is constructed, and how the progress, safety and quality will be monitored and controlled. In this masters project the arch of the munkedal bridge was used as an example. These bridges have concrete box girder superstructure s that align with the gore area transitions of the approach spans of bridge 82045. Prepare a repair strategy and determine viable options. Design of reinforced concrete retaining wall toe bs 8002. The benefit can, in most cases, be seen for slender and compressed concrete structures. The publication of the document is at the request of the relevant centc250 sub. Master of science and hereby certify that, in their opinion, it is worthy of acceptance. Construction of segmental concrete bridges began in the united states in 1974. The superstructure of the bridge structure consists of deck slab, girder, truss etc.

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. This information ensures the correct analysis takes place. Lifecycle cost many factors affect the life of a bridge beyond whether or not the superstructure is comprised of steel or concrete such as design, type and frequency of traffic, environment, weather, maintenance and changes in usage and conditions over time. Repair of concrete in highway bridges a practical guide. Impact of lrfd specifications on design of texas bridges volume 2. View example in pdf format design example 1 download example as a mathcad workbook zip castinplace flat slab bridge design. Adhesive anchors may be used provided that the temporary barrier will be in service for less than one year. Bridge construction manual guidelines to project supervisors bridge engineering page 2 revision. All manual modifications must be approved by the bridge design engineer. Hueste, mohammed safi uddin adil, mohsin adnan, and peter b. Prestressed bridge structural design calculations to the specifications of eurocode bs 54004. Design manual for bridges and structures sixth edition, 2016 nj.

Shear and torsion capacity of a reinforced concrete beam. Pci has developed preliminary design charts in accordance with the aashto. Usually of square see fig 14 b, triangle, circle or octagonal section, they are produced in short length in one metre intervals between 3 and meters. Prestress shortening per 100 feet of contributory length will equal. Bridge design specifications second edition, 1998, including interims for 1999 through 2002. The term reinforced concrete only came into general use later marsh 1905. This is a partially finished form diagram of a bridge that will span 99 feet. Example on design of slab bridge design data and specifications superstructure consists of 10m slab, 36m box girder and 10m tgirder all simply supported.

Please refer to the latest edition of the aashto lrfd bridge design specifications4 for details of this design load. Example of concrete bridge design pages iii1 to iii15 summary iii1 1 description of the bridge iii1 1. Bridge frames supporting precast concrete and steel beams. Limit states, combination and partial factors actions, inc. Multimedia package for lrfd concrete bridge design rosa p. 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. Machine finishing for repaired concrete deck surface. This document includes detailed flowcharts outlining the design steps for all components of the bridge.

The design specifications used in these examples is the aashto lrfd bridge design specifications. Structures design office lrfd design examples files pdfs. Comprehensive design example for prestressed concrete girder. The ndot drainage manual, which is the responsibility of the hydraulics section, discusses the evaluation of hydraulic scour for bridge foundations. Notes author staff bridgesight software sponsor bridgesight software. Main roads western australia structures engineering design manual page 2 of 6 chapter 01. Reinforced concrete slab design using the empirical method. Manual for design and detailing of reinforced concrete to the september 20 code of practice for structural use of concrete 20 2. For all other extreme events, substructure elements shall be designed in accordance with aashto lrfd bridge design specifications. Bss090119991 abstract this design example illustrates the empirical design method for composite concrete bridge decks specified in article 9. Manual for design and detailing of reinforced concrete to.

Appendix a examples colorado department of transportation. The purpose of this document is to illustrate how the pgsuper computer program performs its computations. Site location is assumed to be near socorro, new mexico, with the bridge crossing a waterway on a normal. This type of bridge provides benefits of rapid construction, and improved structural performance. These components vary based on the type of bridge whether concrete or steel or composite. Title reinforced concrete slab design using the empirical method publication no. Hs25 is a design loading only, and is not used in load rating. Introduction this example illustrates new mexico department of transportation nmdot design procedures for a threespan prestressed concrete girder bridge.

Superstructure of the bridge bears the load passing over it. Concrete deck slabs supported by concrete or steel beamsgirders. Njdot design manual for bridges and structures 6th edition, 2016 i. Also the measures to ensure that the site is environmentally friendly. 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. Design of bridges 1 bridges actions and load combinations pages i1 to i76. Currently, close to 200 segmental concrete bridges have been built or are under construction, with spans up to 240 m 800 ft. The research was performed to develop guidelines for design and construction and to address issues that significantly influence performance.

Prestressed concrete refers to concrete that has applied stresses induced into the member. Precast, prestressed girder design example pgsuper training 242020 1. 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. Bridge approach slab analysis and design incorporating elastic soil support presented by. Prestressed concrete bridge girder design examples. The package includes six practical examples to provide a generic overview of the design. The attachment of traffic barrier service parapet single face or double face to the concrete bridge deck shall be by means of bolting through the full depth of the deck slab. Foundation design recommendations for the bridge are discussed below under the subsection following headings. Worked examples presented at the workshop bridge design to eurocodes, vienna, 46 october 2010. Structural concrete structures reinforced concrete construction. Concrete bridge lrfd specifications parsons brinckerhoff page 1 1. Design of reinforced concrete bridges department of civil. Introduction this example is part of a series of design examples sponsored by the federal highway administration.

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. Eurocode 2 worked examples the concrete initiative. Substructure design chapter 7 wsdot bridge design manual m 2350. Design step 5 design of superstructure prestressed concrete. Look for cracking along support beams and inner walls especially below a fillet a. This document provides guidance for the design of a precast, prestressed beam bridge utilizing the aashto lrfd bridge design specifications. Only the design of slab bridge will be used for illustration. Impact of lrfd specifications on design of texas bridges. The intent of the cdot bdm is to complement current american association of state highway and transportation officials aashto load and resistance factor design lrfd specifications with current interim edition and to provide interpretations applicable to the design of colorado projects. Example 1 choosing a steel subgrade sheet 2 of 6 rev p. Final foundation design the last phase completes the geotechnical report and allows the final structural design to begin. Comprehensive design example for prestressed concrete. The specified design strength of concrete is 30 mpa at 28 days measured on standard cylinders.

Two design examples of a simply supported slab bridge and a twospan box girder bridge are also presented. Prestressed precast concrete beam bridge design click here for table of contents. The transverse section and profile views of the sample bridge follow. Main roads western australia structures engineering design manual page 3 of 3 preface. Components parts of a bridge concrete and steel bridges parts. Appendix a, foundation design concepts, is used to identify acceptable foundation designs based on the manufactured home type and the site conditions. Appendix c prestressed concrete bridge design example task order dtfh6102t63032 c1 appendix c calculations of creep and shrinkage effects see design step 5. The detailed design process is developed in the following chapters, each of which. Repair of concrete in highway bridges a practical guide define the objective and constraints of repairs. New design recommendations are first demonstrated through examples for standard bridge designs.

Jul 01, 2016 project execution plan for bridge construction 1. The design process for these bridge structures is not covered in this document. Typically, wires or tendons are stretched and then blocked at the ends creating compressive stresses throughout the members entire crosssection. Shear design recommendations modify the american association of state highway and transportation officials sectional design method to ensure that crack angles used are physically admissible. View example in pdf format design example 2 download example as a mathcad workbook zip adhesive anchor examples. Contact your local contech representative for more information. For the bridge in this example, the design method is the equivalent strip width method, specified in pca section 4. The first goal was accomplished by development of guidelines.

Comprehensive design example for prestressed concrete psc girder superstructure bridge with commentary. By the late 1990s, splicedgirder spans reached a record 100 m 330 ft. Pdf design and construction of a reinforcement free. Notation of the nds as the source of design requirements in this chapter reflects references in aashto that specify the nds as the most current source of timber design information for bridges aashto. Kansas department of transportation bridge construction manual version 1011 kdot bridge section 1. Design of concrete structures shall be based on the requirements and guidance cited. Cracks in the concrete are used by bats as a foothold in roosting photo 1. Eight walls spaced 11 feet apart bring total loads of 120 kips each from the stiff deck to a concrete arch below. Late in the 1970s, cablestayed construction raised the bar for concrete bridges. Analysis and design of reinforced concrete bridge structures.