The new guide specifications for horizontally curved steel girder highway. The computer program descus ii will perform the complete analysis of a horizontally curved bridge composed of steel box sections which act either compositely or noncompositely with a concrete deck. The computer program descus i will perform the complete analysis and partial design of a horizontally curved bridge composed of flanged steel sections which act either compositely or noncompositely with a concrete deck. Cooperative highway research program nchrp 3 have been modified to. Historical perspective on horizontally curved i girder bridge design in the united states. These shear forces then react on the girders resulting in a set of selfequili brating girder shears. Contact mdx software if you need assistance in converting projects to mdx version 6. Program will read program input from the descus ii program with additional data for construction staging to investigate effects of a curved girder bridge during construction.
Shear strength of horizontally curved steel igirders. The program can be run using either working stress design wsd method, the load factor design lfd. Analytical and field investigation of horizontally curved girder bridges. A parametric study was carried out, using sap2000 software, to examine the behavior of horizontal curved concrete slaponsteel igirders, under the effect of thermal loading conditions 65c. Dynamic analysis of a reinforced concrete horizontal curved beam. Abstract dynamic analysis of a reinforced concrete beam bridge, horizontally curved in plan is done using a finite element software. Analysis and design partial design software for horizontally curved composite or noncomposite steel igirder bridges. Study of horizontally curved slabonsteel i girder bridges with integral abutments under thermal loading. Construction staging is an integrated utility program designed specifically for the construction staging of a curved steel bridge. Horizontally curved igirder bridge analysis transportation. Design and analysis of curved igirder bridge system. Download a pdf of development of lrfd specifications for horizontally curved steel girder bridges by the national academies of sciences, engineering, and medicine for free. Horizontally curved, steel girder bridges are often used in our modern infrastructural system. I will perform the complete analysis and partial design of a horizontally curved bridge composed.
The program can use either the working stress design wsd method, the load factor design lfd method or the load and resistance factor design lrfd method. Final report to professional service industries, inc. The computer program descus ii will perform the complete analysis of a horizontally curved bridge composed of. Curved bridge design bridge engineering software optimate. Engineering software texas department of transportation. Software ferguson structural engineering laboratory. The radius and arclength of girder 2 are r2 and, respectively. Pdf historical perspective on horizontally curved i girder bridge. The purpose of this spreadsheet is to provide a tool and give information to an engineer when deciding the safety of lifting a horizontally curved steel igirder with one crane and two lift clamps.
This bridge is the igirder design example presented in the appendix of the aashto guide specifications for horizontally curved steel girder highway bridges, 2003. Principal, bridge software development international, ltd. These tools were previously packaged together and posted to the txdot engineering software webpage as utcgat ut curved girder analysis tools. To equilibrate the torsional couples on the cross frame, vertical shear forces, v, develop at each end of the cross frame as a result of crossframe rigid ity and end fixity. The radius of the outside girder, girder 1, is ri and the arclength is. Research program has decided that funding future research regarding the design and construction of curved.
Ut lift is an easy to use, macroprogrammed excel spreadsheet for determining the behavior during lifting of straight and horizontally curved steel i girders with one crane and two lift clamps. Development of lrfd specifications for horizontally curved. The curve in the bridge allows for a smother transition for traffic, which creates better road travel. Shear strength of horizontally curved steel i girders finite element studies.
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