The report includes design standards and design examples for complete prefabricated bridge systems, and proposes specification language for accelerated bridge construction systems, which adheres to the american association of state highway and transportation officials aashto load and resistance factor design lrfd bridge design and. Lrfd design example for steel girder superstructure bridge. This bridge is the igirder design example presented in the appendix of the aashto guide specifications for horizontally curved steel girder highway bridges, 2003. The example illustrates the design of a typical threespan continuous straight steel igirder bridge with spans of 140. The primary goal of the collaboration is to achieve steel bridge design and construction of the highest quality and value through standardization of the design. Design manual for bridges and structures sixth edition, 2016 nj. Iowa dot bridges and structures bureau january 2020. Each tutorial includes module files and step by step guidelines so you can improve your midas civil skills via completing a small project. Bridge design bridge design and assessment bridge components. The attachment of non structural elements is the responsibility of the architect or designer, unless specifically shown otherwise. Bridge design to eurocodes worked examples worked examples presented at the workshop bridge design to eurocodes, vienna, 46 october 2010. Steel bridge design handbook steel structures bridges. For major axis buckling, it is pinned at both ends. Design examples of seismic retrofits of normal bridges.
All the design examples assume the use of either s275 or s355 steel that complies with en 100252. The design process and corresponding calculations for steel igirders are the focus of this example. Weathering steel is a special alloy of carbon steel that forms a stable and. Version 14 american institute of steel construction.
Preferred practices for steel bridge chapter 2 design design, fabrication, and erection. The files attached include a csibridge model and a detailed pdf which documents the modeling and verification procedures for a composite steel girder bridge design based on the example published in the lrfd design example for steel girder superstructure bridge fhwa nhi04041 by fhwa in november 2003. Design guidance for simple connections will be given in sci publication p358 joints in steel construction. Two design examples of a simply supported slab bridge and a twospan box girder bridge are also presented. 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 igirder bridge. Lrfd bridge design specifications4 for details of this design load. Appendix a examples colorado department of transportation.
This design example tries to follow this outline as closely as is relevant. In modern bridge design the use of finite element software is widely spread in all stages of design, even during the conceptual one. However, it is common practice, particularly for smaller bridges, for the detailed design of a footbridge to be included as part of a design and construct package. Pdf steelconcrete composite bridge design guide researchgate. For example, steel plates are usually hot rolled, and cast steel may be used for bearing. A fully detailed design can be prepared with other contract documents for pricing by tenderers. Curved steel 3d example aashtoware bridge design and. Concrete boxgirder bridge model tutorials computers.
Bridge detailing guide the texas department of transportation. The basic application of the aashto lrfd bridge design specifications to the design of straight steel isection flexural members is illustrated through this design example. This document is a standard developed by the aashtonsba steel bridge collaboration. Attached is a model file and a pdf which outlines the procedure for modeling a concrete boxgirder bridge, a steel girder bridge, and a cablestayed bridge. Design of reinforced concrete bridges department of civil. Each design example is a standalone document, but the first example in each track has the most. Pdf format of boring logs, and other subsurface investigation data ctp, etc. References are made in the text to guidance notes, for example to gn 1.
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. The primary goal of the collaboration is to achieve steel bridge design and construction of the highest quality and value through standardization of the design, fabrication, and erection processes. Expansion joints september 2008 191 chapter 19 expansion joints lrfd article 14. A sample analytical method for bearing resistance calculation. This design example was edited in 2012 by hdr engineering, inc. Multimedia package for lrfd concrete bridge design rosa p. Steel igirder, design example, steel bridge, aashto. Pdf steel frame structure analysis and design by staad. Strutandtie model design example for hammerhead pier. For example, the design bureau has chosen to specify a target.
Bridge design manual, little additional documentation is required. Have a well founded knowledge of design specifications. This document is disseminated under the sponsorship of the u. Steel frame structure analysis and design by staadpro example 4 technical report pdf available february 2017 with 16,086 reads how we measure reads.
Many fabricators are able to provide such a package, using methods and details of construction developed to suit their particular. Preliminary design considerations the success of a steel bridge design depends on the preparation of the designer. Guidance notes on best practice in steel bridge construction2. Plans table, in a multipage pdf file to a subfolder in the contracts plan turnin folder. A six storey building for a commercial complex has plan dimensions as shown in figure 1. These notes are part of the publication steel bridge group. This chapter presents ndot criteria for the design and selection of expansion joints in bridges. Time 20 bridge design approach 26 what success looks like 28 bridge design library introduction 60 landscape 62 deck structures 66 piers and bearings 70 parapets 74 abutments and walls 78. Abstract this design example presents an alternative design for that presented in the steel bridge design handbook design example 2a. Some experience of bridge design, perhaps of the design of highway bridges, would be advantageous in understanding the detailed design. Further, any use of these data or suggested practices can only be. For example, if substructure settlements have resulted in. Online users can click here to view this illustration in pdf. A new section has been added to the guideline to help navigate through the requirements of section 10 of the lrfd specifications.
Purpose of this document 08 high speed 2 10 bridge design 12 design requirements 14 bridge design vision hs2 design vision 18 people. Example 91 lfr general example 92 lfr with deterioration. Engineered solutions structural plate design guide 7. Straight bridges where one or more support lines are skewed more than 20 degrees from normal. Consequently, it is suggested to use a femodel of the bridge not only to calculate the stress and deformation of the footbridge but also to. A pdf document of the design notes section contained on this website. 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 igirder bridge. An example of a haunched girder ladder deck is shown in figure 2. The document contains notes regarding the choice of abutment, choice of bearings, preliminary design, reinforced concrete decks, prestressed concrete decks, composite decks, steel box girders, steel truss decks, cable stayed decks, suspension bridges, drainage systems, choice of. In addition to the design of simple structural members, examples are included for simple connections used in buildings.
This guide offers an introduction to the design of steel and composite railway bridges, for readers who are generally familiar with the principles of limit state design. Analysis and design of composite steelgirder bridge. Worked examples presented at the workshop bridge design to eurocodes. Design guidance for simple connections will be given in sci publication p358 joints in steel. The design examples provide coverage of all applicable limit states whether or not a. Longitudinally spike laminated timber deck design example 8. An image of a model taken from the sap2000 bridge examples document is shown in figure 1. The 300 series of documents is assigned to the bridge office. It includes some pdf documents containing explanatory examples and an overview of the strategic development of this structural code. Contentlrfd design example for steel girder superstructure bridge aashtolrfd design example horizontally curved steel box girder bridge horizontally. Preferred practices for steel bridge design, fabrication. A pile design example reflecting the procedures in the guideline is included in the appendix. This structures engineering design manual has been prepared by structures engineering section of main roads western australia to provide a guide to the design of bridges and associated structures within mrwa. Ultrahigh performance fiber reinforced concrete elements pdf.
Design step 2 example bridge prestressed concrete bridge design example haunch depth 4 in. The manual is intended to fill a gap not covered by either the bridge design code or. The bridge design manual is a dynamic document, which constantly changes because. File sizes should not exceed 50 mb for each pdf file. An outline for basic steps for concrete bridge design is given in appendix a5 of the lrfd specifications. The publication of the document is at the request of the relevant centc250 sub. The design process and corresponding calculations for steel igirders are the focus of this example, with particular emphasis placed on illustration of the optional moment redistribution procedures.
256 1313 42 159 1401 832 55 1456 86 852 1155 479 1311 1223 444 1042 58 462 1603 1046 1196 1531 810 1481 1024 1002 1065 1392 138 887 1434 1228 970 720 1321 372