Plate girder design using lrfd, engineering journal, american institute of steel construction, vol. Fabrication of steel plate girder r linkedin slideshare. If flange widths transition at the splice location, size the flange splice plate to the smaller width. This book is aimed at training the students in using is. All animation files are redirected to web pages 1 introduction introduction. A plate girder is subjected to a maximum factored moment of 4000 knm and factored shear force of 600 kn. For more detailed syllabus i am attaching a pdf file with it. Cl stress modification coerficient depending on 01.
The section of the girder is the same as that of the outer girder but the design moment is less. Riveted plate girder section properties of a riveted. Download structural analysis software riveted plate. Openings are frequently required, particularly in building construction, to allow access for service ducts, etc. The web panel of plate girder is slender in cross section and susceptible to shear buckling. The curtailment of the thicker plate is made by reducing thickness t f, keeping b the same. Plate girders ii where, qe elastic critical shear strength values to be used in design for different values of ad and dt are tabulated in table 1. Bhavikatti this new edition of an extremely popular textbook continues in its tradition of presenting design procedures using a simple language, neat sketches and abundant solved problems. Damodar maity, department of civil engineering, iit guwahati.
In plate girder, the web is always slender, as dt w 126. Steel bridge design handbook splice design volume 14. Performing organization name and address hdr engineering, inc. Riveted plate girder section properties of a riveted plate. Stuchndarnubmoxamdqajntmt theoryofetnadjatfibution.
The recommended spandepth ratio for simply supported girder varies between 12 for short span and 20 for long span girder. Flange design flange is a solid plate of width b and thickness t f. Numerical analysis of buckling strength of welded plate girder with corrugated web plate girder mr. Extend bearing stiffeners the full height of the girder. Postbuckling and tension field action are introduced and the roles of the main components in a plate girder identified. For economy and ease of fabrication, exterior and interior girders should use the same plate sizes.
Steel plate girder bridge design using indian standard. Learn for free, pay a small fee for exam and get a certificate. Nptel provides elearning through online web and video courses various. A plate girder with fe415 plates is having 12mmx150mm web plate and 56mm x 500mm flange plates. Design to ec3 part 15 nanyang technological university. Plate,girders can often be loaded beyond the web buckling load predioted by the classical plate buck11n theoryo this is due to the fact that the web plate is framed by flanges and transverse stiffeners which allow for a redistribution of stresso since a plate girder web is usually subjected to bending, shear or a combination of the two, the. Span of the gantry girder m effective length of its compression flange m spacing between wheels on gantry girder m crane capacitylifting load tons unfactored.
Every bridge is unique and this document cannot provide the best answer for every possible situation. Lecture series on design of steel structures by dr. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. Civil engineering design of steel structures i nptel.
In general, depth of the plate girder is kept 110 th to 112 th of the span. The general basis of plate girder design is discussed in a simplified way as a prelude to a more detailed presentation in lectures 8. Civil engineering design of steel structures ii nptel. Laterally supported and unsupported beams, builtup beams, plate girders. Mod7 lec3 introduction to plate girderspart 1 youtube. Assume case 1 follow procedure of design of plate girder. Pdf plate girder parametric study with variations in.
Generally an isection with a channel section is chosen, though an isection with a plate at the top flange may be used for light cranes. For this steel girder design example, a plate girder will be designed for an hl93 live load. Design example 312 b s d i structural analysis summary liveload distribution factors. For such columns, the simple columnbaseplate connection detail shown in figure 1. Design the plate girder at the centre of the span considering the impact allowance as per irc code. Select, production and composition, structure and hydration. Plate girder design using lrfd american institute of steel.
Strength limit state interior girder exterior girder bending moment 0. The major innovation in the new codes is the introduction of the partial safety factor format. The test results reflect only the character of the soil located within a depth of less than twice the width of the bearing plate. The obstacle to be crossed may be a river, a road, railway or a valley. The dynamic interaction between a heavy truck and highway is presented by the fe analysis by kwasniewski et al. Explain in detail about the preparation of tender notices and documents. Also, commonly available plate thicknesses should be used for. This document primarily discusses common steel girder bridge types. Section properties of a riveted plate girder to bd 5610 and bs54003. Double web plate girder bending capacity structural. Plate girder design using lrfd american institute of. Crane girder design crane girder details proper detailing is the key to good fatigue performance the vast majority of crane girder performance issues occur at the crane girder to column connection.
Hysd bars as 7380 mm 2 shear and shear reinforcement near support. This is a front end, actual program is available with the software. The design may be based on any one of the following assumptions. Lrfd steel girder superstructure design example lrfd. Work in buildings, iit madras and institute of steel development and. Reinforcement for central girder, as 11,22,000 x10 3 196. A hybrid plate girder utilizes high strength steel for the flanges and comparatively low strength steel for the web panel. Neither of these two situations is covered in part 1. This chapter describes the current practice for the design of plate girders adopting meaningful. For future widening the exterior girder is required to have at least the same capacity as an interior girder aashtolrfd 2.
Write short notes on member splices and gusset plate. The depth between the outer surfaces of the flanges is termed as overall depthdo or depth of the plate girder. The steel girder design criteria are obtained from figures 31 through 33 shown below, from the concrete deck design example, and from the referenced articles and tables in the aashto lrfd bridge design specifications through 2002 interims. Mod 7 lec 3 introduction to plate girders part 1 nptel design of steel structures. The required passage may be for a road, a railway, pedestrians, a canal or a pipeline. Plate girders, steel designers manual fifth edition. Numerical analysis of buckling strength of welded plate. G student 2assistant professor 3professor 1,2,3department of civil engineering 1,2amrutvahini college of engineering, sangamner, india 3g. For clayey and silty soils and for loose to medium dense sandy soils with n plate girders dr. For noncomposite plate girder the width of flange plate is chosen to be about 0. Eurocode 3 1 only allows the application of the tension field method, which has been shown in earlier lectures to give a significantly enhanced load resistance, when the web is stiffened. Adobe reader software is used to view the codes in soft copy format to ease the data. You can find most of the materialsnotes related to civil engineering.
Design of plate girder comparing bs5950 with ec3 part 15 in plate girder design design of plate girder bs5950 most design rules found in sections 4. Design of steel structures veer surendra sai university. Animation for folded plate twist under axial load animation for buckling of plate with unsupported edges design strength. View download, the folder chapters of the given files, 9615k, v. Quimby, a beginners guide to the steel construction manual, 2008. Nptel provides elearning through online web and video courses various streams. Nptel, online courses and certification, learn for free. All idot design guides have been updated to reflect the. When the gantry is not laterally supported, the equation to be used to select a trial section is as follows. Bridges with orthotropic steel decks are not covered in this document. Northern railway northern railway, the jewel set in the crown of indian railways. Yamaguchi et al 5 in 2005 conducted threedimensional nonlinear fe analysis of two plate girder bridge to obtain dry shrinkage and prestressing.