The first phase is meant to establish type, size and location. Design of bridges excel sheets free download category. It gives two worked examples, one for a multigirder bridge and one for a ladder deck bridge. The following method have been identified as possible method of reducing the time needed for bridge construction. Ultrahigh performance fiber reinforced concrete elements pdf. Please direct any questions on the content of this document to the bridge design section director, bridge division, texas department of transportation.
When tension flanges of longitudinal girders are connected together, the resulting structure is called a box girder bridge. This design example was edited in 2012 by hdr engineering, inc. Abstract this project examined various methods of innovative bridge design and construction techniques to expedite construction. Innovative bridge designconstruction techniques to expedite. The box girder and the truss bridge evolved together but at different paces depending on the technology available and the geographical location e. Nonlinear redundancy analysis of multicell prestressed. Plan, elevation and section views are shown on the following pages. It is a companion to a publication giving general guidance on composite highway bridge design. The bureau of bridge design has assembled sample plans and bridge plan checklists that can be used as an aide in the preparation of detail construction plans for bridges. Design guidelines for steel trapezoidal box girder systems.
This manual is intended to provide general guidance, and not solutions that are specific to any project. The grandmere bridge, a 285 m 935 ft long castinplace segmental box girder bridge, experienced some distress which required strengthening by adding external prestressing equivalent to 30% of. Key words steel tub girder bridge, steel box girder bridge, lrfd, bolted field splice, top flange lateral bracing, box girder distortional stresses 18. 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. The box is typically rectangular or trapezoidal in crosssection.
Although normally the box girder bridge is a form of beam bridge, box girders may also. Such was the case with the box girder as it evolved from the principle of the initial bridge beam but with the centre. Based on observations made during construction, and on measurements taken of concrete strains, tendon strains, temperature distributions, and slopes, a series of detailed design, construction. It provides advice, for those already acquainted with the design of composite ibeam bridges, on the particular aspects of box girders bridge design and the use of bs 5400. Lessons learned in the design and erection of box girder. Jul 03, 2014 design of bridges excel sheets free download category. Design guidelines for steel trapezoidal box girder systems 6. This example generally follows the aashto lrfd bridge design specifications 4th edition. The spreadsheet focus on design of prestressing cable for box girder bridge using balanced cantilever method. Prestressed concrete continuous box girder bridge design. Design guide for composite box girder bridges steelconstruction. Therefore, the purpose of this paper is to present information relative to the design criteria in addition to information on pre liminary plate sizes, design aids, and computeraided design of steel box girder bridges.
Box girder types bridge building bridges of dublin. Pdf precast segmental box girder bridge manual serhat. Each steel trapezoidal box girder unit should be evaluated for the suitability of reinforced elastomeric bearings, pot bearings, andor disk bearings, and the suitable bearings designed specifically for the given box girder unit. Investigation into the project revealed numerous issues in the bridges design and construction. Arch, cablestayed, and suspension alternatives were considered, but ultimately, a continuous single box girder design consisting of seven spans was selected for its compatibility with the existing bridge. Psc box girder bridge using fcm as per eurocode february 2018. This paper describes the bridge type selection process, preliminary and detailed design procedures, unique structural details and construction and steel erection for four complex curved single steel box girder bridges completed within the groundside component of the terminal development project at. Mar 27, 2019 attached is a model file and a pdf which outlines the procedure for modeling a concrete boxgirder bridge, a steelgirder bridge, and a cablestayed bridge. This document is available to the public design example, steel bridge through the national technical information service, springfield, va 22161.
The west gate bridge is one of a number of box girder bridges built during the mid 20th century, and was one of four to fail in a three year period. Load distribution in simply supported concrete box girder. Over two hundred200 pages of manual design calculation for a box girder bridge. Elastomeric bearings for steel trapezoidal box girder bridges.
The original bridge model was set up by caltrans to perform a pushover analysis for the seismic design of the bridge using sap2000. The continuous composite deck is made up of two steel girders with i. Threespan continuous straight composite i girder load and resistance factor design. It is not intended for the design of unusual structures or to inhibit the designer in the exercise of engineering judgment. A strict box cross section is obtained in sagging areas with the use of discontinuous. Aashto lrfd bridge design specifications specific to new mexico bridge design practice so that uniformity in bridge design procedures will be attained. Attached is a model file and a pdf which outlines the procedure for modeling a concrete boxgirder bridge, a steelgirder bridge, and a cablestayed bridge. Predict the behavior of girder system once bridge is fully constructed. Design of box girder bridges bending beam structure scribd. Posttensioned psc box girder bridge using fcm as per eurocode. The behavior of box girder section for a general case of an.
Box girder bridges are commonly used for highway flyovers and for modern elevated structures of light rail transport. Strutand tie model design example for hammerhead pier. Threespan continuous straight composite i girder load and resistance factor design third edition customary u. In these cases, straight steel box girders are used in regions where the. An image of a model taken from the sap2000 bridge examples document is shown in figure 1. Customary aashtopciasbi segmental box girder standards for spanbyspan and balanced cantilever construction december, 1997, metric units including the following. Abstract the purpose of this example is to illustrate the use of the aashto lrfd bridge design for. Founded in 1904 and headquartered in farmington hills, michigan, usa, the american concrete institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensusbased standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete design. Abstract the purpose of this example is to illustrate the use of the aashto lrfd bridge design for the design of a continuous two span steel i girder bridge. Founded in 1904 and headquartered in farmington hills, michigan, usa, the american concrete institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensusbased standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete. Innovative bridge designconstruction techniques to expedite construction 7.
The centerline of the bridge lies on a 400 ft radius and the crosssection is a two cell box. In this paper, cost optimization approach of a posttensioned pc i girder bridge system is presented. The second phase if for final design of the structure and foundation system. Analysis and design of prestressed box girder bridge by. Authors todd helwig, joseph yura, reagan herman, eric williamson, dawei li 8. Design examples are presented in appendices to this manual. This document is disseminated in the interest of information exchange.
Structural steel design, fabrication, and construction jamie f. Cantilever construction method is adopted and considered in design box girder bridge using balance cantilever method. Prestressed tendons system in a box girder bridge 7. Learning objectives basic procedure of designing segmental bridges manual method of modeling modeling using wizard checking results and design report. The spreadsheet focus on design of prestressing cable for boxgirder bridge using balanced cantilever method. Computerised design of boxgirder bridge using balanced. Bridge design guide 11 txdot january 2020 chapter 1 about this guide. The publication of a second edition followed in 1998, along with the publication of the first edition of a companion document the aashto lrfd. These include standard concrete cover and bar spacing dimensions, plus a variety of specific design and detailing instructions. Introduction box girders have become a prominent element in the con. Steel girder bridge design plans shall be submitted in phasestwo 2.
Design of reinforced concrete bridges department of civil. West virginia and indiana, use adjacent box girder systems without separate wearing surfaces. Aesthetic considerations were of high importance in choosing the final design for the new bridge. The virtisopis rating shall be shown on the bridge plans.
Prestressed concrete beam and girder design txdots policy is held firmly to a 6. In addition, the method is used for a comprehensive study of the. Posttensioned box girder bridge an analysis approach using. The overall matrix is generic for wsdot design, but there is a line in the matrix that outlines the. In this paper, cost optimization approach of a posttensioned pc igirder bridge system is presented. Civil engineering to provide a passage over an obstacle like a water body, a valley, canal or a road structure is built across that obstacle to span a space and allow the easy movement of the concerned bodies over those obstacles, such a structure is named as bridge. Extending maximum length of the folded steel plate girder bridge system fspgbs, exceeding 100 ft.
Design considerations for steel plate girder bridges. Posttensioned box girder bridge can be eliminated in continuousspan, castinplace box girders by utilizing monolithic connections between the bridge superstructures and the piers, which in turn eliminate the bearing assemblies maintenance problems. Included as a bonus is a full detailed bill of quantities for the bridge. Worked examples presented at the workshop bridge design to eurocodes. Steel box girder bridge, lrfd, bolted field splice, top flange lateral bracing, box girder distortional stresses. New bridge design information is continually developing. An overview of the design and erection issues is presented, particularly those dealing with thin. This publication is the second of two sci bridge design guides that reflect the rules in the eurocodes. Box girder when the area to be spanned exceeds that of existing systems then a new system has to be developed. Design of box girder bridges free download as pdf file. The transverse section and profile views of the sample bridge follow. Structural steel design, fabrication, and construction. The example problem is a three span continuous box girder bridge that is 700 ft. One problem with adjacent systems is leakage of the grout joints between the adjacent.
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 committee 340, design. Pdf construction of precast segmental box girder bridge. North water diversion canal workers to total chengxing feng line continuous prestressed concrete box girder bridge. Siteblauvelt engineers cranberry township, pa pittsburgh, pa b s d i design. Analysis of box girder bridge presentation free download as powerpoint presentation. 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. The objective is to minimize the total cost in the design process of the bridge system considering the cost of materials, fabrica. Steel tub girder, steel box girder, lateral bracing, no restrictions. Steel bridge tutorials computers and structures, inc. Investigation into the project revealed numerous issues in the bridge s design and construction.
This thesis presents a method for the complete determination of load distribution in simply supported concrete box girder highway bridges. Additionally, the virtisopis file used for rating the bridge is to be sent to the nmdot bridge design bureau. Analysis and design of prestressed box girder bridge by irc. Box girders are used for highway bridges, railway bridges and footbridges different structural forms are chosen for each of these applications. It is assumed the bridge will be cast on falsework. Design of concrete structures shall be based on the requirements and guidance cited. Analysis and design of prestressed concrete box girder bridge. Posttensioned box girder bridge an analysis approach. It gives two worked examples, one for a multi girder bridge and one for a ladder deck bridge. The bridge design manual is a dynamic document, which constantly changes because of the creativity and innovative skills of our bridge designers and structural detailers. Site location is assumed to be near socorro, new mexico, with the bridge crossing a waterway on a normal. Innovative bridge designconstruction techniques to. Sample owners quality assurance manual erection guide spec coating systems guide. Bridge design guide txdot january 2020 feedback for txdot policy on designing bridges, please refer to the txdot bridge design manual lrfd.
Sample design sheet to assist in selecting the optimized folded girder. This example illustrates the design of a two span castinplace post tensioned concrete box girder bridge. The bridge design manual is a dynamic document, which constantly changes because. Pdf analysis and design of prestressed concrete box. This document is disseminated under the sponsorship of the u. A box girder bridge is one in which the principal structural element is one or more closed cells, acting in bending. The publication of the document is at the request of the relevant centc250 sub. Measured behavior of a curved precast segmental concrete. Design of prestressed concrete igirder bridge superstructure. Nonlinear analysis of prestressed concrete boxgirder bridge this document describes the model and covers the details of the analysis setup for a multicell prestressed concrete box girder bridge example. However, the dead load for girder design shall not be less than 25% of a single barrier rail weight.
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