Concrete box girder bridge design example pdf download

Download free bridge design and analysis spreadsheets. While each type has its limitations and preferred uses, the boundaries are continuously being pushed far beyond the original design intent as practicing engineers and bridge owners. This example illustrates the design of a two span castinplace posttensioned concrete box girder bridge. Pci has developed preliminary design charts in accordance with the. Pdf composite steelconcrete box girders are frequently used in bridge construction for their economic and structural advantages. Learn about the csibridge 3d bridge analysis, design and rating program and the comprehensive suite of tools it offers for the design of prestressed concrete. The first steel bridge to be launched in the united states is believed to be a kansas city southern. Box girder bridges the concrete box girder was initially developed by the french engineer eugene freyssinet during the 1920s, and the earliest bridges of this type were constructed in europe hope, 1998. Bridge design guide 32 txdot january 2020 section 1 general recommendations prestressed concrete beam and girder design txdots policy is held firmly to a 6. Pdf analysis and design of prestressed concrete box. Prestressed concrete decks are commonly used for bridges with spans between 25m and 450m and provide economic, durable and aesthetic solutions in most situations where bridges are needed. The yarra river box girder bridge in melbourne, australia, collapsed during construction in.

Furthermore, the optional moment redistribution specifications will be invoked. The nomenclature of the structural elements in a steel box girder is given in figure 1 which shows, as an example, a single cell box girder with a composite concrete deck. Key words prestressed concrete, lrfd, design, bridge girders. Loading on box girder bridgethe various type of loads, forces and stresses to be considered in the analysis and design of the various components of the bridge are given in irc 6. The bridge was a posttensioned concrete box girder bridge with a main span of 315 ft. Concrete boxgirder bridges ryerson digital repository. The integral wearing surface is considered in the weight calculations. This example illustrates the design of a two span precast prestressed i girder bridge. 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. However, under certain circumstances it may be preferable to base design on the seventeenth edition of the aashto standard specification for highway bridges instead. Oct 22, 2020 for instance, 3100 reinforced concrete box girder bridges were designed and built in california between 1937 and 1977 degenkolb, 1977. To continually meet the needs of our clientele we produce a of a wide variety of bridge girders products, ranging from long span prestressed precast concrete nu girders to shorter prestressed precast concrete box girders.

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. The box is typically rectangular or trapezoidal in crosssection. Pdf analysis and design of prestressed concrete box girder. Precast concrete girders lafarge precast edmonton alberta. A method for the design of intermediate external diaphragms is presented herein.

The box girder normally comprises prestressed concrete, structural steel, or a composite of steel and reinforced concrete. Analyze the concrete box girder road bridges for various spans, various. Create free account to access unlimited books, fast download. Box shapes 187k, pdf deck bulbtees 164k, pdf double tee bridge beams 157k, pdf next bridge beams 104k, pdf pci zone 6 curved spliced girders 1. Concrete boxgirder bridge model tutorials computers.

Wisdot bridge manual chapter 19 prestressed concrete. Bridge concrete design download bridge design spreadsheet. Download full prestressed concrete segmental bridges book or read online anytime anywhere, available in pdf, epub and kindle. Concrete composite box girder bridge a construction manual. A design example followed by a load rating analysis illustrates the engineering computations performed by pgsuper. Worked examples presented at the workshop bridge design to eurocodes, vienna, 46 october 2010.

Extensively illustrated throughout, this invaluable book. Design guidelines for steel trapezoidal box girder systems. Designers knew that as they increased the pier size, the box girder prestressing requirements would increase. We specialize in the design, engineering and production of precast concrete bridge girders for the infrastructure sector. Introduction this example illustrates new mexico department of transportation nmdot design procedures for a threespan prestressed concrete girder bridge. Basic bridge structure software cant always provide solution to design structures. Such design ideas as making it a onespan bridge and what material to use in construction, prestressed concrete or steel, were further investigated. Pdf transverse design of rc hollow box bridge girder.

Bridge design to eurocodes, worked examples, european. Concrete boxgirder bridge model tutorials computers and. Posttensioned box girder bridge an analysis approach using. Rehabilitating concrete box girder bridges designed to show you bridge design example of them should extend at cantilever method, designed such sections are. Csibridge 05 design of prestressed concrete box girders. Mar 27, 2019 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. Nov 12, 2019 specifically, the design of a continuous steel wideflange beam bridge is presented using a standard shape rolled ibeam, as an alternative to the plate girder design. Design bridge girder us comprehensive design example for. The superstructure consists of two simple spans made continuous for live loads.

Pdf prestressed concrete segmental bridges download. Analysis and design of prestressed box girder bridge by irc. Structural analysis and response of curved prestressed. Other than that, to develop a spreadsheet for the design of presstressed box girder bridges using balance cantilever method based on eurocode 2 to reduce working time. In the second example, overload behavior and ulti mate strength of a threespan curved prestressed concrete box girder bridge under 1. Majority of these bridges has either reinforced concrete, prestressed concrete or steel girders with reinforced concrete decks 5. Performing organization code in us customary units 7. Posttensioned box girder bridge an analysis approach. Concrete bridge lrfd specifications parsons brinckerhoff page 1 1.

Current girder types range from simple castinplace concrete to posttensioned segmental concrete box girders and highperformance structural steel plate girders. For prestressed box girders, the use of concrete with strength greater than 5 ksi is only allowed with prior approval of the bos development section. Pdf steel concrete composite bridge design guide the plate girder bridge consists of a number of steel girders that are connected to a concrete slab by shear connectors that allow composite behavior. Pdf analysis and design of prestressed concrete box girder bridge. This design manual is an outcome of the research project rfscr03018. Load and resistance factor design lrfd bridge design specifications and the current interims as the primary standards for the design of bridges in the state of new mexico. An image of a model taken from the sap2000 bridge examples document is shown in figure 1. Design step 7 design of substructure prestressed concrete bridge design example task order dtfh6102t63032 74 axis parallel to the girder s longitudinal axis and in the perpendicular direction. Site location is assumed to be near socorro, new mexico, with the bridge crossing a waterway on a normal.

T or igirder bridges are the most common example under this category and are very. Bridge design excel sheet bridge design and analysis. Chapter 5 concrete structures bridge design manual m. Wostmann, in nondestructive evaluation of reinforced concrete structures. Reinforced and prestressed concrete are used extensively in bridge projects. To avoid this circular dilemma, only the end spansat 157 feet long, the longest in the new bridge were posttensioned. Bridges built with adjacent precast, prestressed concrete box girders are a popular and. The earliest examples in the united states date to the 1930s. This document consists of a comprehensive design example of a prestressed concrete girder bridge. Box girder bridges an overview sciencedirect topics. 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. Standard adot 42inch fshape barriers will be used resulting in a bridge configuration of 17 barrier, 120 outside shoulder. This manual contains information related to the analysis and design of castinplace concrete box girder bridges prestressed with post tensioning tendons. Mathematical modeling the mathematical model of a box girder bridge having a span of 30 m is shown in figure6.

Pdf the design of a reinforced concrete hollow box bridge is. Computerised design of boxgirder bridge using balanced. A box girder bridge, or box section bridge, is a bridge in which the main beams comprise girders in the shape of a hollow box. In addition to the beam design, the design of the concrete deck is also included. The aims of this project is to develop a series procedure of box girder bridge using cantilever method design based on prestressed concrete design procedure. Key words prestressed concrete, lrfd, design, bridge girders, u54. Analysis and design of box girder and tbeam bridge superstructure. Pdf optimum design of multispan composite box girder bridges. The example illustrates the design of a typical threespan continuous straight steel i girder bridge with spans of 140. The design procedure was developed through an investigation of torsion in curved girders and the effect of torsion on twintrapezoidal box girder bridge systems.

Design step 7 design of substructure prestressed concrete. Impact of lrfd specifications on design of texas bridges. The use of 8 ksi concrete for prestressed i girders and 6. Analysis and design of prestressed box girder bridge by. The example design of curved box girders presented in this chapter is in. Optimum girder design step in addition, minor adjustments can download below chart is for the top flange. The prestressed concrete bridge girder shown in fig. Modeling of box girder bridge the tendon profile considered for the design of post tensioned box girder bridge is parabolic and mathematical model is shown in figure 6. Prestressed concrete box girders unsymmetrical sections. Finally, a complete design of the bridge including girders, columns, abutments and the deck was created.

Pdf posttensioned concrete girders yatniel bustamante. Posttensioned box girder design manual federal highway. The use of 8 ksi concrete for prestressed i girders. The twin girders bridge has two or more steel girders that are usually ishaped girders, which, like the plate girder bridge, are connected to a. Design step 4 design of deck prestressed concrete bridge design example task order dtfh6102t63032 43 for this example, a slab thickness of 8 in. Construction failure an overview sciencedirect topics. Analyze the concrete box girder road bridges for various spans, various depth and check the proportioning depth. This rating can be done withe csi bridge design 2015,2016, 2017load combination,seismic and wind. Reinforced concrete bridges concrete reinforcing steel. Pgsuper uses a stateoftheart iterative design algorithm and other iterative computational procedures. Concrete remains the most common material for bridge construction around the world, and prestressed concrete is frequently the material of choice.

Dead load, live load, and prestressing load cases are analyzed. A 150mm thick topping slab was cast over the top flange of the beams after full stressing. Lrfd design of double composite box girder bridges lrfd design of double composite box girder rules to develop a model design example for use by bridge, prestressed tendons system in a box girder the design of small bridges and on the structural behaviour of reinforced concrete rc box girder bridges. The substructure consists of integral end abutments and a multicolumn intermediate bent. A box girder bridge is a particular case of a foldedplate structure in which the plates are arranged so as to form a closed section rockey et.

Analysis of posttensioned concrete boxgirder bridges diva. Design bridge girder us comprehensive design example. The document also includes instructional commentary based on the aashtolrfd. Design of reinforced concrete bridges department of civil. Apr 26, 2012 after half a century of developments, concrete box girder bridges have a positive track record, are widely used, and have reached spans of up to 988 ft. Report date comprehensive design example for prestressed concrete psc november 2003 girder superstructure bridge with commentary 6. Here, lies the importance of the bridge design and analysis spreadsheet. Box girder bridges are commonly used for highway flyovers and for modern elevated. Concrete box girder bridge design example pdf download. Click get books and find your favorite books in the online library. California has been dominated by concrete for nearly 100 years. Abstract this document consists of a comprehensive design example of a prestressed concrete girder bridge. Here lies the importance of the bridge design and analysis spreadsheet for the engineers who are involved in bridge engineering. These bridges present specific challenges to the designer that have to be addressed in the context of design codes, available materials, prevailing construction methods and project constraints.

In addition to general design guidance and information on detailing practices, this section contains three design examples. The bridge is upgraded for hlpv resulting in an increase in the unfactored live loads applied to the beam. 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. Size optimization of a practical design example investigate. Lrfd design of double composite box girder bridges core. Finite strip analysis of continuous thinwalled box girder. With bridge design excel sheet, it becomes easier to obtain instant summary of different sections and parts of multiform bridges. Key words steel, box girders, trapezoidal, torsional 18.