Reactions bridge deck the bridge deck is designed as a metal structure and consists of a central platform and hexagonal anchorages where the cables attach. A regional bridge failure database was used to determine the bridge failure rate with associated causes. In this paper the advantages and disadvantages of using more complex analysis. Performance is affected because either loads that cause volumetric changes. Analysis of deck slab and tee beam of a bridge scribd. Analysis and design of prestressed box girder bridge by. Guidance on the application of commonlyused analytical. Second, the superstructure of the bridge is the horizontal platform that spans the space between columns. The superstructure of a bridge consists of the deck. Define and analyse moving and wheel loads in staad pro on deck slab duration. Authors seongyeong yang, todd helwig, rich klingner, michael engelhardt, and jeremiah fasl 8. The wearing surface course is that portion of the deck cross section which resists traffic wear. For the deck types discussed herein, a brief description of the particular deck type is given, in addition to general design and detail considerations.
This design example was edited in 2012 by hdr engineering, inc. The theoretical principles has been expounded in the book of edmund c. Grillage analysis for slab bridge decks morris and west. Staad pro bridge deck analysis using stadd beava on irc. Click onto the tutorial or example in the table below to connect to the relevant web page. In spite of the increases in computing power, bridge deck analysis methods have not changed to the same extent, and grillage analysis remains the standard procedure for most structures. Design a post tensioned prestressed concrete slab bridge deck to suit the. Hydraulic analysis using hecras 10 steps for a basic hecras analysis. While we designed this bridge, we made sure to keep in.
Comparative study of grillage method and finite element method of rcc bridge deck r. This cost analysis showed the economical impact of this bridge. Integral bridges are single span or multi span bridges with continuous deck and movement system composed primarily of abutments. While it is easy to visualise grillage model of a bridge deck, there must be a careful thought process especially when you want to model on a software like staadpro. General design of cable stayedbridges the main structural elements of a cable stayed bridges are the bridge deck, piers, towers and the stays. Bridge deck modelling and design process for bridges.
Example grillage analysis solid deck bridge with effective span 5. Integral bridges free download as powerpoint presentation. This books covers the entire gamut of bridge engineering investigation, design, construction and maintenance of bridges. In some instances this is a separate layer made of bituminous material, while in some other cases it is a integral part of concrete deck. Scribd is the worlds largest social reading and publishing site. Analysis and design of prestressed box girder bridge by irc. Pdf bridge deck analysis through the use of grillage. Bridge deck behaviour revisited doug jenkins interactive design services overview. Bridge analysis is affected because large skew alters distribution of loads from deck to girders in girder deck type bridges. Staad pro bridge deck analysis using stadd beava on irc code. Add a bridge use the deck roadway button to add the bridge information.
Worked examples on bridge design with eurocodes, 1718 april 20, st. Steelconcrete composite bridge design guide september 20. Changes in computing technology illustration dynamic analysis animation features of alternative analysis methods hamblys comments on fe analysis summary of findings in paper examples of advanced analysis techniques conclusions copy of presenation. For longitudinal beam bridges, two conditions are checked in the transverse direction to design the deck reinforcing steel. These books are used by students of top universities, institutes and colleges. It also gave us an understanding on how different aspects of a construction project can affect the cost of a large scale project. Design of a reinforced concrete deckgirder bridge to. The deck supports the loads and transfers them to the stays and to the. There are two common forms of deck type bridge multigirder bridges and ladder deck.
Solid slab type decks are generally modelled using finite elements, however grillages may be used for this type of deck with reasonably accurate results. Comprehensive design example for prestressed concrete. First, the theoretical principles on which this kind of modelling is based are recalled. In this post, we are going to carry out grillage analysis for the bridge deck model shown below. At only 15 years old, this bridge deck is already showing signs of severe corrosion activity and damage. The purpose of this report is to present guidelines for the design, manufacture, handling, shipping and erection of precast prestressed concrete bridge deck panels. Lrfd bridge deck design bridge deck design requirements are covered under idm chapter 404. This includes continuous beam equations, moment distribution, simple beam equations, or finite element analysis. Seminar bridge design with eurocodes jrc ispra, 12 october 2012 2 main selected features general presentation and scope of ec3 and ec4 related to steel and composite bridges materials structural analysis crosssection analysis at uls and sls treatment of instabilities fatigue.
Longitudinal grillage members are arranged to represent the main beams with transverse members representing the deck. A research about the historical context and construction methods of tiedarch bridges was. Appendix b general guidelines for refined analysis of deck slabs appendix c example of creep and shrinkage calculations archived. Bridge deck analysis through the use of grillage models. Numerical analysis corrosiveness map of bridge deck b. Calculate the internal forces and moments according to eurocodes principles b. According to the aashto bridge design specifications, a new bridge should have a design life of 75 years. Impact of overhang construction on girder design 5.
By modelling the bridge deck geometry and stiffness to represent its actual behaviour in the best way c. Al so the design life of the wearing surface should be considered separately from the design life of the deck superstructure. Pdf bridge deck analysis through the use of grillage models. Design step 4 design of deck prestressed concrete bridge design example task order dtfh6102t63032 41 design step 4 deck slab design design step 4. The objective of this project is to understand the effects of large skew on bridge analysis, design and service performance. Using a sample population from one dot over a 25year period, the average number of bridge.
In addition, a fully worked design of a bridge deck panel meeting aashto specifications is provided in. Grillage analysis applied to cellular bridge deck, the structural engineering, july, no 7, vol. The existing pleasant street bridge bin 2215390 is 40 feet long by 20 feet wide and will be redecked using allegany county forces in may or june of 2012. Comprehensive design example for prestressed concrete psc november 2003. What are the shortcomings of grillage analysis which is commonly used. In these types of bridges the road surface are continuous from one approach embankment to the other and abutments are cast. Analysis and design of bridge deck using grillage method is considered. This paper provides a summary of these new analysis and design methods and the advantages that can be achieved. For the purpose of analysis, dead load self weight, wearing coat, super imposed dead load, footpath live load and. Grillages are most widely used to analyse beam and slab type bridge decks. Many methods are used in analyzing bridges such as grillage and finite element methods. Abstract the purpose of this example is to illustrate the use of the aashto lrfd bridge design for the design of a continuous two span steel igirder bridge. Shreedhar, rashmi kharde abstract the simplest form of bridge is the singlespan beam or slab which is simply supported at its ends. Analysis of deck slab and tee beam of a bridge free download as word doc.
This document is intended as a design manual for the application of grillage analogy method for the bridge deck analysis. In this platform, metal ribs leave some 4 meters on both. The object of the paper is the study of the representativity of the grillage models with which different types of bridge decks are schematized. A basic introduction to the design codes and methods of anlysis.
How to carry out bridge deck grillage analysis using staad. After analysis is complete, input is received, and subcomponent testing is done to identify the best combination of materials to use, the deck will be installed on a bridge in bolivar, ny. Testing and evaluation of existing bridge decks for. Grillage analogy in bridge deck analysis free ebook download as pdf file. Comparative study of grillage method and finite element. Hambly, bridge deck behaviour, chapman and hall, 1976, first edition e. Advanced bridge analysis and design methods have been simplified with the aid of modern bridge software. Download as ppt, pdf, txt or read online from scribd.
Design of steel and composite bridges highway bridges. Pdf a retrospective analysis of hydraulic bridge collapse. Topics covered include automated vehicle load pattern. Bridge design specifications second edition, 1998, including interims for 1999 through 2002. Performing organization name and address center for transportation research. Design and performance of highly skewed deck girder bridges. Bridge design grillage analysis tutorial for bridge decks. 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.
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