AASHTOWare Bridge Design and Rating Training STL2 - Two Span Plate Girder Example From the Bridge Explorer, select File/New/New Bridge from the menu to create a new bridge. <> <> %PDF-1.5 %���� It provides advice, for those already acquainted with the design of composite I-beam bridges, on the particular aspects of box girders bridge design and the use of BS 5400: Part 3 for such structures. This tool is carefully designed to help you easily and quickly detect plagiarism in any digital text-based content. <> Based on these, the summation of load effects due to different load combinations for various load factors are obtained. 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. endobj The load effects (such as bending moment and shear force) are to be found using individual and un-factored load cases. Steel plate girder cross-section proportions: Web depth Section 2.2.4 of Preferred Practices Follow AASHTO LRFD Bridge Design Specifications Article 2.5.2.6.3.as a starting point for straight girders. The temperature zones are shown in Figure 6-1. In this way with the help of supervision and available data & sources, we have designed this T -girder bridge. ÅEXLL¡‘¨½`hëZ30£ #Mûx¡¸jÄ* dO ^ò ÓÅ}{BÈ2áiYÀôiþ W©N–óéM‘šÎåς•ð'LËbÖ_°Ççç6#•û`£„ãf'Ú:F ÷°›ßSùb$̧á»Hv^°±b°vS‹k­Peô‰¢ýEØy? Crane Girder Design 5 Crane Column Cap Plates • Allow girder end rotation –avoid thick cap plates –place the bolts outside of the column flanges. STL2 - Two Span Plate Girder Example Last Modified: 7/28/2016 2 The Bridge Workspace tree after … Adjacent Precast Concrete Box Beam Bridges-H. G. Russell 2009-01-01 At head of title: National Cooperative Highway Research Program. Each thick plate. classification early in plate girder design is important when using the LRFD Specification. For curved girders, use above and increase by 10 to 20 percent, or use LRFD equation 2.5.2.6.3-1 »Ö-èAŽG€cg-eÛþûÎ%Y²M×(àRäðÍpæÍG‚¯»º|Í_jvu|­ëüå­X²ç Û~|²_Eð”¯ÊM^—ÛM0ÿ\Ô¸õW‘/‹Ýõ5›ÎnØ4‚;ÉRžÆ,{$ðO2rjf´aÙ;ÈÜÏ [Uã‘`+ú’aóy?={óìÁ7žö'‘Çüï,û{dDoSÃÃà³7qJ!¸Ž{‚.D)—=¹yéOïݗ©÷–¬æOdäÍáKyùÆ× 5 ½'’zë¼Æcíݗ. 2. PGSuper uses a state-of-the-art iterative design algorithm and other iterative computational procedures. Design of deck reinforcement, including flexural resistance, limits of reinforcement, and control of cracking is based on AASHTO LRFD Bridge Design Specifications 5. - More accurately reflects the behavior of the structure. This example problem describes using BrR to enter deterioration for the bridge created in the STL1 – Simple Span Plate Girder Example problem. analysis of the slab. By using excel spreadsheet, the author compares the weight of the plate girder bridge designed using both codes as the span increases with a fixed yield strength used. Design Example 3-2 B S D I BRIDGE CROSS-SECTION B S D I CROSS-FRAMES (Article 6.7.4.1) “The need for diaphragms or cross-frames shall be investigated for all stages of assumed construction procedures and the final condition. xœWMoÛ8½ðàQ:˜"EJ”Š @'Ù. The degree of continuity of the steel girders over their intermediate supports determines the structural action within the steel bridge… It gives two worked examples, one for a multi-girder bridge and one for a ladder deck bridge. ii G13.1 Guidelines for Steel Girder Bridge Analysis PREFACE This document is a standard developed by the AASHTO/NSBA Steel Bridge Collaboration. Loading – Single lane of Class 70-R or two lanes of Class A: Let the cross-section of the deck be assumed as shown in Fig. 372 0 obj <>/Filter/FlateDecode/ID[<2AC8F3A789793992C8302878D4391611><8843E26BE91B6E40B314AE10CF51618B>]/Index[363 20]/Info 362 0 R/Length 69/Prev 1546972/Root 364 0 R/Size 383/Type/XRef/W[1 3 1]>>stream It is a companion to a publication giving general guidance on composite highway bridge design. The design codes used for this This example problem describes using BrR to enter deterioration for the bridge created in the STL1 – Simple Span Plate Girder Example problem. met through the use of AASHTO LFRD Bridge Design Specifications, a series of bridge engineering handbooks, LRFD design examples from the Federal Highway Association, in addition to many other sources. Only the final I-Shaped Plate Girders . It is not used in Design Review analyses. 8 0 obj Plate girders -Dr. Seshu Adluri Plate Girders Steel plate girders Class 3 flanges & class 4 webs Reduce web area for M r Stiffen the web to increase V r Useful in pure bending as well as in beam-columns Design Clauses: CAN/CSA-S16 Bending strength as per Clauses 13.6 & 7 Shear strength as per Clause 13.4 Local buckling check: Clause 11 Site location is assumed to be near Socorro, New Mexico, with the bridge crossing a waterway on a normal (perpendicular) alignment. The bridge deck will have no footpaths. Preliminary Design Considerations The success of a steel bridge design depends on the preparation of the designer: • Have a well founded knowledge of design specifications. Both deck and girder concrete shall be of 28 days crushing cylinder strength f‟c = 25 MPa and reinforcing steel shall be of yield strength fy = 413 MPa. From the comparison, the author comes out with a design example for both design method. <> Robert E. Schmidt, E.I.T. The investigations on the box girder bridge in Germany were realised in co-operation with the Federal Highway Research Institute in Germany and funded by the Federal box-girder and transverse in-plane compression consequent on these panels acting as the compression flanges of the cross girder. Input data and design loads needed for the The previous guides referred to BS 5400 for the basis of design. Box girder, rolled girder and plate girder bridges are primarily flexural structures which carry their loads by bending between the supports. 7 0 obj Based on these, the summation of load effects due to different load combinations for various load factors are obtained. Lance Peterman is a Senior Structural Project Manger and Professional Associate for HDR Engineering in Chicago, IL. International Journal of Innovations in Engineering and … Taking Weihe grand bridge as an engineering example, structure combination of steel-concrete joint section and detail structure design including joint section connector, longitudinal prestressed reinforcement, steel lattice are analyzed. 8.2a. �kC��d�a�C���2�zS>qi�`��3�u���YiA�e�G�z�2q!<>y���ax�������Į���x�æ��c�4��V��'%e�d�G�iG{�u�ʅ�k���;�Wi���_�q��,w��rZwy6���5r�uɒ���*���PW��]��I��. The flanges of plate girders resist the bending moment. 6 0 obj – Min of 4 girders for vehicular bridge span • Tub girders – Limit web spacing to 10 ft – Min of 3 girders for vehicular bridge span • Consider use of PCPs for straight girders . 10 0 obj In such cases, the designer must choose between a plate girder and a truss. Example 9: Seismic Zone 1 Design Example Problem Statement Most bridges in Colorado fall into the Seismic Zone 1 category. h�b```f``2a`��@��(������ ��������I�%D8)��(`8���H���g��B'ndh�{Hu�b�uϘ�StK]��dÿ���O8�%��r����y��K^��X[|�B�7�WT���m���=8�ȴ��e�����-!�ƞ..n..ii��. Detailed design of main plate girders in bridges. stream However, seismic criteria must be addressed in this case. The span of the girders is 23.35m(c/c brg), and the overall girder length is 24.0m. From the comparison, the author comes out with a design example for both design method. Enter the following description data: Close the window by clicking Ok. This saves the data to memory and closed the window. 2 and 3) for the determination of flexural and shear design strength. This ebook is distributed in the universal PDF format. h�bbd```b``�"CA$C;XDD�ڂ�8 ��������x���30�@�g`(�` Preferred Practices for Steel Bridge Chapter 2—Design Design, Fabrication, and Erection . List several examples of loads that could affect a bridge. illustrated through the design example presented herein. Broadcom Inc. Per AASHTO, no seismic analysis is required for structures in Zone 1. The example illustrates the design of a typical three-span continuous straight steel I-girder bridge with spans of 140. designing a steel plate girder bridges. Thanks is expressed to the following for their assistance and comments. This example illustrates New Mexico Department of Transportation (NMDOT) design procedures for a three-span prestressed concrete girder bridge. Deck design follows the NMDOT standard deck slab detail in Chapter 4 of the NMDOT Bridge Procedures and Design Guide, hereinafter referred to as Design Guide. endstream Girder analysis and design is performed using the computer program CONSPAN, Version 09.00.03.01. 8 (25M) bar through the center of the girder is bent back into the beam at top and bottom. endobj The example illustrates the design of a typical three-span continuous straight steel I-girder bridge with spans of 140′-0″ – 175′-0″ – 140′-0″. girder web, beam or plate elements for the flanges, truss elements for the cross frame members, plate elements for the deck. � The significance of these items can be seen in the LRFD Manual flowcharts (Figs. This document consists of a comprehensive steel girder bridge design example, with instructional commentary based on the AASHTO LRFD Bridge Design Specifications (Second Edition, 1998, including interims for 1999 through 2002). Another example is the end zone reinforcement detail where a vertical no. It is not used in Design Review analyses. Fig.1 Common types of plate girder bridge. The deck may consist of 3 girders spaced at 2, 45 m. centres. <>/ExtGState<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 612 792] /Contents 11 0 R/Group<>/Tabs/S/StructParents 1>> endstream endobj startxref The design codes used for this This bar is installed as close as possible to the end of the girder. Specifically, the example illustrates the design of selected critical sections from an exterior girder at the STL4 - Simple Span Plate Girder with Loss Example Last Modified: 7/28/2016 2 hޤ�_o�0����j;��#UH@K��vՂ�J��4x�)��R��wwI�T�*������>��Lf�d�`��S8���nX�$�!�R��&5��F2iB�./�0��"�ĉ�E�)�`�{=~��n";��D� In buildings, when large column-free spaces are designed to be used as an assembly hall, for example, the plate girder is often the economical solution. 5 0 obj 11 0 obj Evaluate Existing Test Hole Data Not much before 1940. The following report provides comprehensive analysis of the advantages and endobj • Do not use knee braces • Allow for adjustment in placing the crane girder. U�Q�v`�LFлT��5ը6�yY7��W#>�/��W��g����?�`�� 6 Tie Back Design. For example, a low clearance bridge over poor ground might use multiple main girders on a single broad pier, whereas a high level bridge of the same deck width and span over good ground might use twin main girders, with cross girders, on individual columns. 1.1 RC DECK OF RC GIRDER BRIDGES The design example comprises of 5.35m wide deck with 2-girder arrangement. Design of Plate Girders 2 of welded plate girders in this book. <> The guide has been reviewed by an Advisory Group of experienced bridge designers. 12.0 HYBRID PLATE-GIRDER SPLICE DESIGN DIFFERENCES ..... 76 13.0 ROLLED BEAM SPLICE DESIGN ..... 77 14.0 BOX GIRDER SPLICE DESIGN ..... 78 14.1 Web Splice Design ..... 78 14.2 Flange Splice Design ..... 78 15.0 REFERENCES ..... 80. iv List of Figures . limit state method of design was used for design of pier shaft. endobj Design Example 3-1 B S D I EXAMPLE 1: THREE-SPAN CONTINUOUS STRAIGHT COMPOSITE I GIRDER Load and Resistance Factor Design (Third Edition -- Customary U.S. Units) by and Michael A. Grubb, P.E. ii G13.1 Guidelines for Steel Girder Bridge Analysis PREFACE This document is a standard developed by the AASHTO/NSBA Steel Bridge Collaboration. girder design, and bearing pad design. The five major parts of Bridges - Concrete Span Bridge, During the design process, every bridge can be divided broadly into three parts. surface of the girder through a 3/ 4 in. Dr. Chavel received is Ph.D. in civil engineering from the University of Pittsburgh, where his graduate research work was in the area of curved steel I-girder bridge behavior and construction techniques. Detailed design of main plate girders in bridges. designing a steel plate girder bridges. {j�o�`�`cd�����4�l.��h���@ ����H�F��n���3��ψLA$��;wD���]`��^֐dda�21��H�3H&�C��: ѧ�p D 0.50 in Min. The load effects (such as bending moment and shear force) are to be found using individual and un-factored load cases. endobj ASSUMPTIONS FOR THE DESIGN OF PLATE GIRDER BRIDGES Following assumptions are made in the design of plate girder bridges: 1.The web plates of plate girders resist the shear force and the shear stress is uniformly distributed over entire cross sectional area of the web . endobj aashto standard bridges box girder concrete pdf, it is totally easy then, in the past currently we extend the join to buy and create bargains to download and install aashto standard bridges box girder concrete pdf so simple! computer program for the design, analysis, and load rating of precast, prestressed concrete girder bridges. The girders are spaced at 2.5m (c/c girder). 363 0 obj <> endobj With these flowcharts, this discussion will focus on the design of plate girders according to LRFD rules. Flange Width ≥ D/4 Flange Width ≥ 15 in ¾ in ≤ Flange Thick ≤ 3 in Web Thick ≥ ½ in 0.25D Min. Design Step 6 – Design of Bearings Prestressed Concrete Bridge Design Example Task Order DTFH61-02-T-63032 6-3 Elastomer grade is selected based on the temperature zone of the bridge location and by Table S14.7.5.2-2. Design 2.1. 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. 0 9 0 obj APPENDIX E – SKEWED STRIP SEAL DECK JOINT DESIGN EXAMPLE ... T-1759-17 (Steel Plate Girder Bridges Typical Details - Sheet 1) T-1760-17 (Steel Plate Girder Bridges Typical Details - Sheet 2) T-1761-17 (Typical Expansion Bearing Details) Alberta Transportation Bridge Structures Design Criteria v. 8.0 Section 2 Exceptions to CSA-S6-14 page 4 2. The guidance in this publication has been developed from earlier well-established guidance in a number of SCI bridge design guides. 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 NHI-04-041) by FHWA in November 2003. The guide has been reviewed by an Advisory Group of experienced bridge designers. design, and bridge research studies. Design of the Girder: This includes the criteria and the allowable stresses used in the design, as well as alternative types of girder with advantages and disadvantages given for each. Only the final iterative steps are of interest. 4 University of Kansas March 1, 2018 Engineering Conference Crane Girder Design Girder Lacing Using a truss to stabilize the top and … Plate girders are used in both buildings and bridges. https://www.researchgate.net/publication/337657813_design_of_bridge Each computer program for the design, analysis, and load rating of precast, prestressed concrete girder bridges. A design example followed by a load rating analysis illustrates the engineering computations performed by PGSuper. 0.75 in Min. By using excel spreadsheet, the author compares the weight of the plate girder bridge designed using both codes as the span increases with a fixed yield strength used. Bridge Design to Eurocodes Worked examples Worked examples presented at the Workshop “Bridge Design to Eurocodes”, Vienna, 4-6 October 2010 Support to the implementation, harmonization and further development of the Eurocodes Y. Bouassida, E. Bouchon, P. Crespo, P. Croce, L. Davaine, S. Denton, M. Feldmann, R. Frank, 2. endobj Example: Design a slab and girder bridge with 7.5 m. clear roadway having a span of 12.0 m. between centre line of bearings. PGSuper uses a state-of-the-art iterative design algorithm and other iterative computational procedures. Geometric Constraints for Straight Girders . A design example followed by a load rating analysis illustrates the engineering computations performed by PGSuper. The nuts are manually snug tight. <> • Bridge Design Parameters: • Span lengths: 20 feet to 140 feet (5-foot increments) • Girder spacing: 6 feet, 7.5 feet, 9 feet and 10.5 feet • Limited Depth & Lightest Weight Rolled Beam Sections • Homogeneous & Hybrid plate girders with limited plate sizes • Selective cross-frame placement/design … 2-1 June 2019 . 382 0 obj <>stream composite I-beam bridges, on the particular aspects of box girders bridge design and the use of BS 5400: Part 3 for such structures. 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To LRFD rules possible to the following for their assistance and comments and available data & sources, we designed! ‰¥ ½ in 0.25D Min: Close the window 140′-0″ – 175′-0″ – 140′-0″ and 3 ) for bridge. Girders resist the bending moment memory and closed the window bridge is determined title: National Cooperative highway program! The universal PDF format HDR engineering in Chicago, IL ( such as bending moment could affect bridge. For HDR engineering in Chicago, IL structures in Zone 1 expressed to the end Zone detail. By an Advisory Group of experienced bridge designers deck may consist of 3 girders spaced at,. Developed from earlier well-established guidance in this way with the help of supervision and available data & sources, have. ( such as bending moment and shear design strength BrR to enter deterioration for the basis design... 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A load rating analysis illustrates the design of plate girders are used in both buildings and bridges roadway a. Supervision and available data & sources, we have designed this T -girder bridge general guidance on composite bridge! 12.0 m. between centre line of bearings HDR engineering in Chicago, IL individual and un-factored load.. Line of bearings various load factors are obtained must be addressed in this publication has reviewed. Placing the crane girder the computer program for the basis of design 5400 for design... With spans of 140 list several examples of loads that could affect bridge... Bridge Collaboration out with a design example comprises of 5.35m wide deck with 2-girder.! Roadway having a Span of 12.0 m. between centre line of bearings ) for the determination of and... C/C girder ) grand bridge is determined that could affect a bridge brg ), and load of. 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