I-Shaped Plate Girders . The load effects (such as bending moment and shear force) are to be found using individual and un-factored load cases. It gives two worked examples, one for a multi-girder bridge and one for a ladder deck bridge. Crane Girder Design 5 Crane Column Cap Plates • Allow girder end rotation –avoid thick cap plates –place the bolts outside of the column flanges. Input data and design loads needed for the Robert E. Schmidt, E.I.T. 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��. 2. STL2 - Two Span Plate Girder Example Last Modified: 7/28/2016 2 The Bridge Workspace tree after … ii G13.1 Guidelines for Steel Girder Bridge Analysis PREFACE This document is a standard developed by the AASHTO/NSBA Steel Bridge Collaboration. endobj This ebook is distributed in the universal PDF format. STL4 - Simple Span Plate Girder with Loss Example Last Modified: 7/28/2016 2 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. Based on these, the summation of load effects due to different load combinations for various load factors are obtained. computer program for the design, analysis, and load rating of precast, prestressed concrete girder bridges. 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 This example problem describes using BrR to enter deterioration for the bridge created in the STL1 – Simple Span Plate Girder Example problem. 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. <> - More accurately reflects the behavior of the structure. PGSuper uses a state-of-the-art iterative design algorithm and other iterative computational procedures. The guidance in this publication has been developed from earlier well-established guidance in a number of SCI bridge design guides. The example illustrates the design of a typical three-span continuous straight steel I-girder bridge with spans of 140. 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. Example 9: Seismic Zone 1 Design Example Problem Statement Most bridges in Colorado fall into the Seismic Zone 1 category. The degree of continuity of the steel girders over their intermediate supports determines the structural action within the steel bridge… 4 University of Kansas March 1, 2018 Engineering Conference Crane Girder Design Girder Lacing Using a truss to stabilize the top and … Only the final iterative steps are of interest. With these flowcharts, this discussion will focus on the design of plate girders according to LRFD rules. The span of the girders is 23.35m(c/c brg), and the overall girder length is 24.0m. 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. 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. 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. 2-1 June 2019 . Combined the calculation and analysis, the connection form of steel-concrete joint section of Weihe grand bridge is determined. limit state method of design was used for design of pier shaft. 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. illustrated through the design example presented herein. xœWMoÛ8½ðàQ:˜"EJ”Š @'Ù. The load effects (such as bending moment and shear force) are to be found using individual and un-factored load cases. 7 0 obj https://www.researchgate.net/publication/337657813_design_of_bridge D 0.50 in Min. designing a steel plate girder bridges. The temperature zones are shown in Figure 6-1. analysis of the slab. surface of the girder through a 3/ 4 in. endobj Another example is the end zone reinforcement detail where a vertical no. girder design, and bearing pad design. 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. thick plate. • Do not use knee braces • Allow for adjustment in placing the crane girder. composite I-beam bridges, on the particular aspects of box girders bridge design and the use of BS 5400: Part 3 for such structures. Evaluate Existing Test Hole Data Not much before 1940. endobj endobj The flanges of plate girders resist the bending moment. Design 2.1. 0.75 in Min. This example problem describes using BrR to enter deterioration for the bridge created in the STL1 – Simple Span Plate Girder Example problem. 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. International Journal of Innovations in Engineering and … 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. 10 0 obj 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 . 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! 382 0 obj <>stream � �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��. Broadcom Inc. Box girder, rolled girder and plate girder bridges are primarily flexural structures which carry their loads by bending between the supports. 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. Thanks is expressed to the following for their assistance and comments. The five major parts of Bridges - Concrete Span Bridge, During the design process, every bridge can be divided broadly into three parts. Site location is assumed to be near Socorro, New Mexico, with the bridge crossing a waterway on a normal (perpendicular) alignment. girder web, beam or plate elements for the flanges, truss elements for the cross frame members, plate elements for the deck. 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″. {j�o�`�`cd�����4�l.��h���@ ����H�F��n���3��ψLA$��;wD���]`��^֐dda�21��H�3H&�C��: ѧ�p ÅEXLL¡‘¨½`hëZ30£ #Mûx¡¸jÄ* dO ^ò ÓÅ}{BÈ2áiYÀôiþ W©N–óéM‘šÎåς•ð'LËbÖ_°Ççç6#•û`£„ãf'Ú:F ÷°›ßSùb$̧á»Hv^°±b°vS‹k­Peô‰¢ýEØy? 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. h�bbd```b``�"CA$C;XDD�ڂ�8 ��������x���30�@�g`(�` 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. endstream This tool is carefully designed to help you easily and quickly detect plagiarism in any digital text-based content. 11 0 obj It is a companion to a publication giving general guidance on composite highway bridge design. ii G13.1 Guidelines for Steel Girder Bridge Analysis PREFACE This document is a standard developed by the AASHTO/NSBA Steel Bridge Collaboration. 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. For curved girders, use above and increase by 10 to 20 percent, or use LRFD equation 2.5.2.6.3-1 The nuts are manually snug tight. The guide has been reviewed by an Advisory Group of experienced bridge designers. The significance of these items can be seen in the LRFD Manual flowcharts (Figs. Flange Width ≥ D/4 Flange Width ≥ 15 in ¾ in ≤ Flange Thick ≤ 3 in Web Thick ≥ ½ in 0.25D Min. 6 0 obj 6 Tie Back Design. This example illustrates New Mexico Department of Transportation (NMDOT) design procedures for a three-span prestressed concrete girder bridge. Adjacent Precast Concrete Box Beam Bridges-H. G. Russell 2009-01-01 At head of title: National Cooperative Highway Research Program. Each Detailed design of main plate girders in bridges. <> It is not used in Design Review analyses. 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. endobj endobj 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. From the comparison, the author comes out with a design example for both design method. The design codes used for this endstream endobj startxref 2. In such cases, the designer must choose between a plate girder and a truss. From the comparison, the author comes out with a design example for both design method. The previous guides referred to BS 5400 for the basis of design. 8 0 obj Lance Peterman is a Senior Structural Project Manger and Professional Associate for HDR Engineering in Chicago, IL. The deck may consist of 3 girders spaced at 2, 45 m. centres. »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. Each In this way with the help of supervision and available data & sources, we have designed this T -girder bridge. <> 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 . Girder analysis and design is performed using the computer program CONSPAN, Version 09.00.03.01. hޤ�_o�0����j;��#UH@K��vՂ�J��4x�)��R��wwI�T�*������>��Lf�d�`��S8���nX�$�!�R��&5��F2iB�./�0��"�ĉ�E�)�`�{=~��n";��D� Detailed design of main plate girders in bridges. The guide has been reviewed by an Advisory Group of experienced bridge designers. Design of deck reinforcement, including flexural resistance, limits of reinforcement, and control of cracking is based on AASHTO LRFD Bridge Design Specifications 5. 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. 363 0 obj <> endobj Only the final 8 (25M) bar through the center of the girder is bent back into the beam at top and bottom. %%EOF A design example followed by a load rating analysis illustrates the engineering computations performed by PGSuper. Geometric Constraints for Straight Girders . 5 0 obj classification early in plate girder design is important when using the LRFD Specification. 1.1 RC DECK OF RC GIRDER BRIDGES The design example comprises of 5.35m wide deck with 2-girder arrangement. This bar is installed as close as possible to the end of the girder. 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. designing a steel plate girder bridges. A design example followed by a load rating analysis illustrates the engineering computations performed by PGSuper. 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. Fig.1 Common types of plate girder bridge. design, and bridge research studies. – 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 . endstream endobj 364 0 obj <> endobj 365 0 obj <> endobj 366 0 obj <>stream <> %PDF-1.5 %���� Specifically, the example illustrates the design of selected critical sections from an exterior girder at the Per AASHTO, no seismic analysis is required for structures in Zone 1. computer program for the design, analysis, and load rating of precast, prestressed concrete girder bridges. Enter the following description data: Close the window by clicking Ok. 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 highway bridges. PGSuper uses a state-of-the-art iterative design algorithm and other iterative computational procedures. The following report provides comprehensive analysis of the advantages and stream However, seismic criteria must be addressed in this case. Preferred Practices for Steel Bridge Chapter 2—Design Design, Fabrication, and Erection . 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). This saves the data to memory and closed the window. • 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 … Plate girders are used in both buildings and bridges. � ���l�b̒�qFp��d���,/>� �y$yN8"N�� ��ձ9gΑ�}֐b>�q­t��[B�A�6�^lđ�2>`����s�F����A+�*������"��a�! The design codes used for this 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. Based on these, the summation of load effects due to different load combinations for various load factors are obtained. <> <>/ExtGState<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 612 792] /Contents 11 0 R/Group<>/Tabs/S/StructParents 1>> It is not used in Design Review analyses. 8.2a. 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. 9 0 obj 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, Fig.1 Common types of plate girder bridge. 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. The girders are spaced at 2.5m (c/c girder). 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. Design of Plate Girders 2 of welded plate girders in this book. 0 The bridge deck will have no footpaths. List several examples of loads that could affect a bridge. 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. 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Of flexural and shear design strength Fabrication, and the overall girder length is.! 0.25D Min seismic analysis is required for structures in Zone 1 example problem describes BrR! A multi-girder bridge and one for a ladder deck bridge and other iterative computational.! Stl4 - Simple Span plate girder and plate girder bridges several examples of loads that affect! Be found using individual and un-factored load cases CONSPAN, Version 09.00.03.01 previous. Design was used for design of pier shaft combined the calculation and analysis, the comes. Preferred Practices for steel bridge Collaboration line of bearings tool is carefully designed to help you easily and detect... At top and bottom Close the window by clicking Ok been developed from earlier well-established in.