Concrete box girder bridge design sample pdf documentation

Only the design of slab bridge will be used for illustration. Guidelines and tutorial for modeling haunched steelgirder bridges. Chapter 1 presents a brief history of the use of the bridge type and describes the basic components of a boxgirder superstructure. Standard aashto hl93 traffic loading is followed for the analysis of bridge prestressed concrete girder as it is widely used for the design of prestressed concrete girder bridges. Authors todd helwig, joseph yura, reagan herman, eric williamson, dawei li 8. Bridge design manual, texas department of transportation august 2001.

Guidelines for design and construction of decked precast, prestressed concrete girder bridges final report prepared for national cooperative highway research program transportation research board national research council r. Appendix b example problems transportation research board. Design example 37 b s d i lrfd negative moment loading article 3. 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. The rater and checker shall complete the rating documentation as described in section 2, of this manual. Construction if made of concrete, box girder bridges may be cast in place using falsework supports, removed after completion, or in sections if a segmental bridge. 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. Box girder when the area to be spanned exceeds that of existing systems then a new system has to be developed. The models were also utilised for the fabrication of precast box segments and for the geometry control during construction. Posttensioned box girder bridge an analysis approach using. The box girder normally comprises either prestressed concrete, structural steel, or a composite of steel and reinforced concrete.

This tutorial provides an introduction to the assignment of joint patterns. North water diversion canal workers to total chengxing feng line continuous prestressed concrete box girder bridge. 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. The substructure consists of integral end abutments and a multicolumn intermediate bent. The first girder is internally prestressed, the second is externally prestressed. Comprehensive design example for prestressed concrete. This document includes detailed flowcharts outlining the design steps for all components of the. This bridge design manual was prepared by siteblauvelt engineers, inc. It is a companion to a publication giving general guidance on composite highway bridge design. Introduction this example illustrates new mexico department of transportation nmdot design procedures for a threespan prestressed concrete girder bridge. It is assumed the bridge will be cast on falsework.

The centerline of the bridge lies on a 400 ft radius and the crosssection is a two cell box. The design of steel structures is covered in section 6 of the aashto lrfd bridge design specifications and only straight steel bridges are covered in the provisions as of this writing. The earliest examples in the united states date to the 1930s. 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. The third edition of the design specifications, to be published in 2004, will contain a complete set of new. Design manual for bridges and structures sixth edition, 2016 nj. The entire bridge was built using a castinplace concrete free cantilever segmental method, with the exception of a 103m section in the middle of the main span, which is a steel box.

Concrete structures chapter 5 wsdot bridge design manual m 2350. This manual documents policy on bridge design in texas. Such was the case with the box girder as it evolved from the principle of the initial bridge beam but with the centre. Use is made of a computer program to compare the behaviour of alternative girder support systems and the advantages and disadvantages of each is summarized. Analysis and design of prestressed concrete box girder bridge. It gives two worked examples, one for a multi girder bridge and one for a ladder deck bridge. Design of prestressed concrete girder bridge request pdf. 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. Multimedia package for lrfd concrete bridge design rosa p. Tech structural engineering, mandava institute of engineering and technology, andhra pradesh s.

The design approach resembles the approach of a preliminary design. Heins september, 1937 december 24, 1982 during the past decade, there has been extensive use of steel box girders for straight and curved highway and transit. Box girder types bridge building bridges of dublin. This publication is the second of two sci bridge design guides that reflect the rules in the eurocodes. Design step 5 design of superstructure prestressed concrete. An image of a model taken from the sap2000 bridge examples document is. Pdf format of boring logs, and other subsurface investigation data ctp, etc. The box is typically rectangular or trapezoidal in crosssection. Concrete bridge lrfd specifications parsons brinckerhoff page 1 1.

Bridge concrete design download bridge design spreadsheet. 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 example problem is a three span continuous box girder bridge that is 700 ft. The maximum segment size is usually governed by transportation constraints and facilities at the fabrica tion plant. Report date extending maximum length of the folded steel plate girder bridge system fspgbs, exceeding 100 ft. Key words bridge design, prestressed concrete, load and resistance factor design, lrfd, concrete deck, intermediate. Report date comprehensive design example for prestressed concrete psc november 2003 girder superstructure bridge with commentary 6. The page numbers are located in the lower outside corners and begin with the chapter number, followed by the. Concrete remains the most common material for bridge construction around the world, and prestressed concrete is frequently the material of choice. This document consists of a comprehensive design example of a prestressed concrete girder bridge. Guidelines and tutorial for modeling haunched steel girder bridges. Design step 5 design of superstructure prestressed.

A detailed and extensive procedure which describes the modeling, analysis, and design of a 3d steelframe pipe rack system. Based on observations made during construction, and on measurements taken of concrete strains, tendon strains, temperature distributions, and slopes, a series of detailed design, construction, and inspectionrelated recommendations are made. In addition, the method is used for a comprehensive study of the. Comprehensive design example for prestressed concrete girder. From girder end midspan of noncomposite beam girder top stress. One of the example problems is based on the box girder bridge erected over the intracoastal waterway at corpus christi, texas, and is essen tially a documentation of the preliminary design procedure used in devel opment of the structure.

An image of a model taken from the sap2000 bridge examples document is shown in figure 1. Analysis and design of prestressed box girder bridge by. Tentative design and construction specifications for. This manual is intended to be a guide for engineers working on bridge design projects for the wvdoh. It provides policies, procedures and methods for developing and documenting the design process.

Prestressed concrete shall apply to the analysis and design of precast segmental box girder bridges. California has been dominated by concrete for nearly 100 years. Design guidelines for steel trapezoidal box girder systems. The design and optimization of segmentally precast. Elremaily construction technology laboratories, inc. Mar 06, 2019 technical report documentation page 1. The following design steps are included in this example. The bridges are designed and constructed adopting the following irc specifications. Comparison of the amount of reinforcement for a boxgirder. Box girder bridges are commonly used for highway flyovers and. Measured behavior of a curved precast segmental concrete. It includes some pdf documents containing explanatory examples and an overview of the strategic development of this structural code. Minor bridge bridge having a total length up to 60 meters. High way bridges are of the greatest practical utility and importance, and the number required in the present state of civilization is extremely large.

Structural design guidelines for concrete bridge decks. Then the 1,400ton, 103mlong box girder was lifted successfully from the yangtze river to its final place with strand jacks. Pdf precast segmental box girder bridge manual serhat. Mar 28, 2019 a detailed and extensive procedure which describes the modeling, analysis, and design of a 3d steelframe pipe rack system. Past manual notices are available in a pdf archive. For example, at the service load level, the deflection mea sured at the. Prestressed concrete continuous box girder bridge design. Example on design of slab bridge design data and specifications superstructure consists of 10m slab, 36m box girder and 10m tgirder all simply supported.

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. Timedependent deflection of inspan hinges in prestressed concrete box girder bridges. Tentative design and construction specifications for precast. Title and subtitle impact of lrfd specifications on design of texas bridges volume 2. Bridge information models for construction of a concrete. For a particular girder span and bridge width, a large number of parameters control the design of the bridge such as girder spacing, cross sectional dimensions of girder, deck slab thickness, number of strands per tendon, number of tendons, deck slab reinforcement, configuration of tendons, anchorage system, prestress losses, concrete. Although normally the box girder bridge is a form of beam bridge, box girders may also be used on cablestayed bridges and other forms. In the design of concrete bridges using spliced girders, the span layout is frequently determined by site condi tions. Concrete boxgirder bridge model tutorials computers and.

Founded in 1904 and headquartered in farmington hills, michigan, usa, the american concrete institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensusbased standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete design. Site location is assumed to be near socorro, new mexico, with the bridge crossing a waterway on a normal. The following design method can be used for normal weight concrete with specified compressive strengths up to 15. 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. Segment sizes are selected 116 to accommodate these constraints and to provide splices at locations that are. The design example and commentary are intended to serve as a guide to aid bridge design engineers with the implementation of the aashtolrfd bridge design specifications. Deck slabs without transverse posttensioning shall be designed under the applicable provisions of section 5 concrete design. While the design examples consider box girders of constant depth. Plan, elevation and section views are shown on the following pages. In addition to explaining the design steps of the design example, the comprehensive commentary goes beyond the specifics of the design example to offer guidance on different situations that may be encountered in other bridges. Analysis and design of prestressed box girder bridge by irc. Design of deck reinforcement, including flexural resistance, limits of reinforcement, and control of cracking is based on aashto lrfd bridge design specifications 5. A box girder bridge is a bridge in which the main beams comprise girders in the shape of a hollow box. 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.

Computeraided design of prestressed concrete cellular bridge decks. Bridge is a inherent part of the structural engineering. Department, sri vasavi institute of engineering and technology, andhra pradesh. Design of prestressed concrete igirder bridge superstructure. Elastic analysis and beam theory may be used in the design of precast segmental box girder structures. 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. A hurdle to structural design with crr is that accurate, accessible methods for predicting.

Load distribution in simply supported concrete box girder. Pdf this research study analyzes the several positions in a box girder bridge. Numbering of sheets each section starts a new page numbering sequence. These calculation sheets are to be filed in the structure folder. The superstructure consists of two simple spans made continuous for live loads. 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 steel box element was incorporated into the design to significantly reduce the bending moment and shear of the structure and make such a long span structure. Concrete psc girder superstructure bridge transportation. Concrete boxgirder bridge model tutorials computers. Title and subtitle design guidelines for steel trapezoidal box girder systems 6. The fhwa posttensioned box girder design manual was developed for engineers who have limited exposure to the design and construction of prestressed concrete bridges. Download a very useful and instructive excel sheets that is specifically created to design various vital portions and sections of different types of bridges conforming to your requirement and necessities.

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. Computerised design of boxgirder bridge using balanced. Analyze the concrete box girder road bridges for various spans, various depth and. Impact of lrfd specifications on design of texas bridges. Posttensioned box girder bridge an analysis approach. This thesis presents a method for the complete determination of load distribution in simply supported concrete box girder highway bridges. It is the purpose of this report to endeavour to bring together the various standard procedures along with many rules and guidelines. Bridge design specifications second edition, 1998, including interims for 1999 through 2002. Heins september, 1937 december 24, 1982 during the past decade, there has been extensive use of steel box girders for straight and curved highway and transit structures. The box girder and the truss bridge evolved together but at different paces depending on the technology available and the geographical location e. Customary aashtopciasbi segmental box girder standards for spanbyspan and balanced cantilever construction december, 1997, metric units including the following. Good bridges are as necessary as good roads for the advancement of a district, and reinforced concrete is an ideal material for a good bridge. Design step 5 design of superstructure prestressed concrete bridge design example task order dtfh6102t63032 549 sample calculations at 54 ft. The 3d bridge models were realised by considering work breakdown structure and product breakdown structure to enable digital mockup and design enhancement and to shorten the learning time of construction engineers.