Using of softwares for the design of bridges is much better than the manual procedure. 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. Part a of this list focuses on these early examples. This paper discusses the coordinated design research program conducted under the sponsorship of the united states steel corporation, on the subject of steel box girder bridges. Although normally the box girder bridge is a form of beam bridge, box girders may also be used on cablestayed bridges and other forms. Key words prestressed concrete, lrfd, design, bridge girders. Shear resistance of the stiffened web panel closest to the internal support p1. Chances are very high that today, a bridge engineer will learn how to design a bridge girder before any other bridge type. The box girder usually includes either structural steel, prestressed concrete or in the form of reinforced concrete or composite section.
Wisdot bridge manual chapter 19 prestressed concrete. Pdf bo x girder bridges are being made into use at many places. Segmental box girders for the high level west seattle bridge rising 150 ft 46, state of washingi span of the west. This horizontally curved steel box girder br idge design example was originally developed in the nchrp 1238 project using the 1993 aashto gu ide specifications for horizontally curved steel girder bridges. The behavior of box girder section for a general case of an eccentric load has been s tudied and presented its studies in chapter 2. Design doubleangle bolted connection for the maximum vertical shear in the girders. Appendix i design example integral steel boxbeam pier. Province as an example, the limited space element models including phase.
The standard design tables are based on welded wire fabric reinforcement with a yield strength of 65 ksi and a concrete clear cover of 2 inches. Structures design office lrfd design examples files pdfs. Cross sections of curved box girders may consist of single cell, multicell or spread box beams as shown in figure 11. Design of bridges excel sheets free download iamcivilengineer.
Box girder bridges are commonly used for highway flyovers and. As shown in figure 1, a boxgirder cross section may take the form of single cell. Box girder bridges are commonly used for highway flyovers and for modern elevated structures of light rail transport. Design guidelines for steel trapezoidal box girder systems 6. In this paper, cost optimization approach of a posttensioned pc i girder bridge system is presented.
Pdf this research study analyzes the several positions in a box girder bridge. Ultrahigh performance fiber reinforced concrete elements pdf. Posttensioned psc box girder bridge using fcm as per eurocode february 2018. It is a companion to a publication giving general guidance on composite highway bridge design. It lets you design different kinds of bridge projects including box girder, spectra, curved, prestressed girder, ibeams, ubeams, and many more. Introduction box girders have become a prominent element in the con. Girder bridges are the most natural and simplest form of bridging between two points. This document is disseminated under the sponsorship of the u. Detailed design examples for an aashto type iv girder and a texas u54 girder using both the aashto standard specifications and aashto lrfd specifications were also developed and compared. Plan, elevation and section views are shown on the following pages. September 20 lrfd bridge design 123 height range to which it applies. Design of steel and composite bridges highway bridges. Girder analysis and design is performed using the computer program conspan, version 09.
Posttensioned psc box girder bridge using fcm as per. This horizontally curved steel box girder bridge design example was originally developed in the nchrp 1238 project using the 1993 aashto guide specifications for horizontally curved steel girder bridges. This video contains transverse and longitudinal analysis of a single cell box girder bridge to determine design moment and shear for manual calculation of flexural and shear reinforcement of the. View example in pdf format design example 1 download example as a mathcad workbook zip castinplace flat slab bridge design. Design example 1 demonstrates design of the superstructure and bearings for a single span castinplace posttensioned concrete box girder bridge using lrfd. The document is part of the federal highway administrations national technology deployment program and may. Read design of pier segments in segmental hollow box girder bridges online, read in mobile or kindle. Analysis and design of prestressed concrete box girder bridge.
Design of box girder bridges bending beam structure scribd. Steel bridge tutorials computers and structures, inc. Wisdot bridge manual chapter 19 prestressed concrete january 2020 193 19. The box is typically rectangular or trapezoidal in crosssection. Design of prestressed concrete igirder bridge superstructure. Steel tub girder bridge, steel box girder bridge, lrfd. Loading single lane of class 70r or two lanes of class a. Design of a single cell rcc box girder bridge youtube. 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. Attached is a model file and a pdf which outlines the procedure for modeling a concrete box girder bridge, a steel girder bridge, and a cablestayed bridge. Chapter 5 concrete structures page 52 wsdot bridge design manual m 2350. Steel box girder bridgesdesign guides and methods aisc.
Design step 2 example bridge prestressed concrete bridge design example 8 reinforced concrete deck 110 18 14 5 spa at 9 8 9 55 4 12 total width 52 roadway width figure 22 bridge crosssection 2. Design guide for composite box girder bridges steelconstruction. You need to start with specifying input parameters to design a specific bridge structure. A box girder bridge is an apparent bridge sector in which main beams contain girders in the hollow box shape. As shown in figure 1, a bo xgirder cross section may take the form of single. Analysis and design of prestressed box girder bridge by irc. Threespan continuous straight composite i girder load and resistance factor design third edition customary u. The design force for the splice plates shall be taken equal to the maximum negative girder moment divided by the girder. Concrete boxgirder bridge design per aashto lrfd 2007. Design and rating for curved steel i and box girder. Structural design of steel igirder, steel, and ps boxgirder bridges is the main thrust of this chapter. Key words prestressed concrete, lrfd, design, bridge girders, u54. The use of laced struts within a lattice girder can be seen in the two photographs of the c1860s lattice girder bridge at llandeilo. Bharil, in innovative bridge design handbook, 2016.
Posttensioned box girder bridge an analysis approach. The transverse section and profile views of the sample bridge follow. Bo x girder bridges are being made into use at many places. Example on design of slab bridge design data and specifications superstructure consists of 10m slab, 36m box girder and 10m t girder all simply supported. Overview of reinforcedconcrete boxgirder bridgedesign capability. American and japanese design and detailing practices of prestressed concrete box girder bridges are compared. Strength of concrete pacific nw aggregates have consistently resulted in concrete strengths, which may. Guidance for handling asbestos in construction projects. Pdf study on the behavior of box girder bridge researchgate.
Box girder bridge design american institute of steel. Construction and load tests of a segmental precast box. Download free bridge design and analysis spreadsheets. Critical dimensions and loads are repeated here for ease of reference. 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.
Pdf analysis and design of prestressed concrete box. Various studies have been performed so as to develop a more stable structure design by varying the shape of the bridge structure. List of lattice girder bridges in the united kingdom. Design of reinforced concrete bridges department of civil.
It gives two worked examples, one for a multi girder bridge and one for a ladder deck bridge. Horizontally curved concrete box girder highway bridges appendix b example problems table of contents example b1 comprehensive design example b5 spine and grillage analysis 1. The objective is to minimize the total cost in the design process of the bridge system considering the cost of materials, fabrica. Chapter 1 presents a brief history of the use of the bridge type and describes the basic components of a box girder superstructure. Class 5000 or higher used in cip posttensioned concrete box girder construction, deep bridge foundations, or in other special structural applications if significant economy can be gained or structural requirements.
Tech structural engineering, mandava institute of engineering and technology, andhra pradesh s. Authors todd helwig, joseph yura, reagan herman, eric williamson, dawei li 8. 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. Comprehensive design example for prestressed concrete psc. This design manual is an outcome of the research project rfscr03018 competitive. 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. 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. Prestressed concrete continuous box girder bridge design. Buckling verifications at internal support p1 according to vi section 10, en 1993. Concrete structures chapter 5 wsdot bridge design manual m 2350. Because only a very few spread box beam bridges use curved beams, only the first two types were considered in this study.
All aashto load cases are shown in the lower lefthand box. The box girder normally comprises either prestressed concrete, structural steel, or a composite of steel and reinforced concrete. The fhwa posttensioned box girder design manual was developed for engineers who have limited exposure to the design and construction of prestressed concrete bridges. 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 and rating for curved steel i and boxgirder bridge structures c. In addition, since the girders are closed they tend to remain dry and there are fewer places for debris and other corrosion causing agents to collect. Customary aashtopciasbi segmental box girder standards for spanbyspan and balanced cantilever construction december, 1997, metric units including the following.
Analysis and design of post tensioned box girder bridge. Comprehensive design example for prestressed concrete psc girder superstructure bridge with commentary. One of these examples was the threespan segmental bridge constructed in corpus christi, texas, during 197273. Only the design of slab bridge will be used for illustration. North water diversion canal workers to total chengxing feng line continuous prestressed concrete box girder bridge. Jul 03, 2014 design of bridges excel sheets free download category. Download design of pier segments in segmental hollow box girder bridges ebook free in pdf and epub format. However, the primary advantage of box girders is the large torsional stiffness that makes the girders ideal for use in curved interchanges for which the bridge. Shop drawing submittals for mndot approval will not be required when standard culvert sections are used.
Example b1 comprehensive example problem description the example problem is a three span continuous box girder bridge that is 700 ft. In this thesis analysis and design of prestressed concrete bridges deck slab, t girder and box girder are carried out using irc. A box girder bridge is one in which the principal structural element is one or more closed cells, acting in bending. The design is based on requiring the deck to act as a rigid assembly of longitudinal and transverse members. Finally, an example of the analysis of a bridge composed of a continuousspan, posttensioned concrete box girder superstructure and a concrete pier is also demonstrated using the approximate equivalent load method. The use of girder as a natural bridging element is abundantly evident in nature, such as a fallen tree trunk over. The fourth report summarized the development of an incremental analysis procedure and computer program to analyze segmentally erected box girder bridges. The example illustrates the design of a typical threespan continuous straight steel igirder bridge with spans of 140.
The deck may consist of 3 girders spaced at 2, 45 m. Note that some bridges, for example the new clyde viaduct or second caledonian bridge in glasgow appear to be of lattice construction whereas in fact the. Learning objectives basic procedure of designing segmental bridges manual method of modeling modeling using wizard checking results and design report. Single cell boxgirder castinsitu are used for spans form 40m to. Box girder bridge design, engineering journal, american institute of steel construction, vol.
Pdf construction of precast segmental box girder bridge. New fhwa posttensioned box girder design manual aspire bridge. 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. Bridgelink is another free software in this bridge design software list for windows. 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. 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. Bridge publications texas department of transportation. Siteblauvelt engineers cranberry township, pa pittsburgh, pa b s d i design. Department, sri vasavi institute of engineering and technology, andhra pradesh.
Prestressed box girders and general prestressed concrete guidelines are also included in this chapter. Design of box girder bridges free download as pdf file. Prestressed concrete psc girder superstructure bridge design example us units pdf version 1. Transverse design of adjacent precast prestressed concrete. Nchrp project number 1271 transportation research board. Design flange splice plates for the maximum negative moment in the girders.
Finally, an example of the analysis of a bridge composed of a continuousspan, posttensioned concrete box girder superstructure and a concrete pier is also demonstrated using. Analysis and design of prestressed concrete igirder bridge. Oct 02, 2012 seminar bridge design with eurocodes jrc ispra, 12 october 2012 3 application s partie 2 generic bridges partie 7. A new precast, prestressed box girder bridge design suitable to u. Impact of lrfd specifications on design of texas bridges. Pdf design of pier segments in segmental hollow box girder. Singlecell box girder multicell box girder spread box beams figure 11 types of cross sections. Design examples are presented in appendices to this manual. Numbering of tables and figures tables and figures shall be numbered using the chapter, section, subsection in which they are located, and then a hyphen followed by consecutive numbers. Twospan continuous straight wide flange beam bridge. The guidance in this publication has been developed from earlier wellestablished guidance in a number of sci bridge design guides.
The example illustrates the design of a typical threespan continuous straight steel i girder bridge with spans of 140. In this case analysis is done using staad pro software. In addition to general design guidance and information on detailing practices, this section contains three design examples. This bridge is the i girder design example presented in the appendix of the aashto guide specifications for horizontally curved steel girder highway bridges, 2003. An image of a model taken from the sap2000 bridge examples document is shown in figure 1. The present document and others related to the research project. A box girder bridge also known as a box section bridge is a bridge in which the main beams comprise girders in the shape of a hollow box. Analysis and design of prestressed box girder bridge by. Interaction between bending and shear at support p1.
This present paper describes the analysis and design of longitudinal girder bridge. Design guidelines for steel trapezoidal box girder systems. Posttensioned box girder bridge an analysis approach using. So through this project, we are analyzed the structural behavior of post tensioned box girder bridge using the recently developed software called csi bridge version 2015.
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