Curved girder design software

Streamline the design of straight and curved igirder and tubgirder bridges with leap bridge steels computational 3d design and modeling. This design example illustrates the design calculations for a curved steel i girder bridge, considering the strength, service, fatigue and constructibility limits states in accordance with the aashto lrfd bridge designs specifications. Project 05574 curved plate girder design for safe and economical construction, resulted in the development of two design tools, ut lift and ut bridge. We are planning to keep all of the beams straight and parallel. With the introduction of new concrete casting technology and construction techniques, spliced u girder technologies now allow the option of curved bridges. One example of this technology and technique in use is the complete redesign of the interchange between i95 and s. Use a singlelaneloaded multiple presence factor of 1. Curved bridges descus i for plate girders and descus ii for box girders. Csibridge offers a single user interface to perform. Calculations are provided for design checks at particular girder locations, a bolted field splice design, a cross frame member design, shear connector design, and a bearing stiffener design.

Steel composite curved girder bridge design midas civil. Concrete bridge design and analysis software bentley. Girder automation software for home automation and commercial. Features bridge analysis, design and rating csibridge. Curved steel 3d example aashtoware bridge design and rating.

Design and rating for curved steel i and box girder bridge structures c. Curved girder analysis with curved girder structures significant torsional stresses must be accounted for at the design stage and careful consideration is. Adaptabi design software for segmentally constructed bridges including cable. Engineering software texas department of transportation. In general, the form of a transverse wind girder is as follows. I have analyzed several curved steel girder bridges with descus and mdx. Ive refer you to my answer to a similar question for a look at general vs. This bridge is the igirder design example presented in the appendix of the aashto guide specifications for horizontally curved steel girder highway bridges, 2003. Csibridge offers a selection of templates for quickly starting a new bridge model or structure. This page introduces the bridge design manual lrfd, which provides design methodology for bridges that considers load and resistance factors based on the known variability of applied loads and material properties. Girder is the award winning, home, office and industrial automation software that allows users of all skill level to make advanced scripts and macros to automate many functions both on the computer and around the house or office.

The design speed and superelevation are used to compute the centrifugal force effects on the truck live load. The design of bridges depends mainly on the radius of curvature and the diaphragm spacing in case of curved girder especially. Content on this page requires a newer version of adobe flash player. Curved steel composite igirder bridge design step 2. The track itself within the girders of course will have to be curved. Auto generation of load combination does not differentiate. Performing analysis on complex bridges, such as curved or flared structures, is a difficult task given the approximations and assumptions inherent in any modeling approach. Bridge can be design both in general design analysis software packages or specialized ones. Pstrs14txdot prestressed concrete beam designanalysis program. The nonlinear layered shell element enables users to consider plastic behavior of concrete shear walls, slabs, steel plates, and other area finite elements in the pushover analysis. The basic application of these new provisions to the design of straight steel isection section flexural members is.

Ut lift is an easy to use, macroprogrammed excel spreadsheet for determining the behavior during lifting of straight and horizontally curved steel igirders with one crane and two lift clamps. Refined analysis of horizontally curved, steel girder bridges is. 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. Girder analysis and design is performed using the computer. The specifications shall be based on the recommended specifications for horizontally curved steel highway bridges developed under nchrp project 1238,which are in a load factor design format, supplemented by the results of the fhwa largescale curved i girder tests as they become available. Stateoftheart of curved girder bridge programs sciencedirect. Steel composite i girder design as per csas614 image 21. The superstructure design includes the following elements. 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. Details title case study design of spliced post tensioned i girder bridge in usa duration 60 mins language english format mp4 size 145 mb download. Pushover analysis features in csibridge include the implementation of fema 356 and the hinge and fiber hinge option based on stressstrain. Extending integral concepts to curved bridge systems. With the design team and software in place, parsons set about the process of modeling the ramp h and ramp i structures. 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.

The computer program descus i will perform the complete. While simon is a straight girder analysis program, the input data and results may be modified for preliminary curved girder design. Threespan continuous curved tub girder bridge this material is based upon work supported by the federal highway administration under cooperative agreement no. Skewed and curved steel igirder bridge fit 1 nsba technical committee, fit task force. Curved steel 3d example aashtoware bridge design and. The software are nice and easy on all win tablet pad. Introduction and research approach the national academies press. The weight of the diaphragms will be computed by the software and applied to the 3d model. 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. Dec 23, 2019 several design and analysis software solutions such as hecras, geohecras, lusas, staad, and autocad are excellent tools for bridge construction. Diaphragms in curved girder systems can be located by one of 3 methods. Currently we only have line girder design software here at. Learn more openbridge modeler 3d parametric modeling software for bridges. If staged placement is specified, base girder design on the worst case effect of staged and continuous placement.

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. Lusas bridge is ideal for curved girder analysis and has many useful modelling and results processing features to help you optimise your design. Implementation of straight and curved steel girder erection. Qconbridge lrfd live load superstructure analysis from rick brice at wsdot free. Specifies to perform girder erection analyses using txdot provided software utlift and ut bridge when applicable, or use other suitable commercial software.

Curved steel bridge comparison on various modeling. Where cross frame fatigue forces control the design, use of a refined model for live load conditions should be considered. The effect of integral abutments on the responses of bridges is also. Case study design of spliced post tensioned i girder. The software you ultimately use will depend on the project type, the available input data, and the go. The research included field tests, threedimensional finite element parametric studies, and software development. Clarifies that any changes to previously approved erection drawingsprocedures requires reapproval. Leap bridge steel leap bridge steel is an integrated modeling, design, analysis, and loadrating software application for straight and curved i girder and tub girder steel bridges. You need to start with specifying input parameters to design a specific bridge structure.

See the adjacent software information links for general details regarding lusas bridge. Several design and analysis software solutions such as hecras, geohecras, lusas, staad, and autocad are excellent tools for bridge construction. Curved bridge design bridge engineering software optimate. The wind girder is arranged as a warren or pratt truss, parallel to the roof plane. Design and rating for curved steel i and box girder. The program can be run using either working stress design wsd method, load factor design lfd method or the lrfd specifications for curved girders. It is possible to create a horizontal wind girder at the level of the bottom chords, with longitudinal elements to stabilize all the trusses. Base dead load deflection and camber on an analysis for continuous placement, even if. The full report for the study will be submitted by october 31, 2009 and includes a more detailed explanation of the recommendations given within this. The horizontal alignment is curved with a radius of 2,830. First, the stresses in the elements of a typical integral abutment are studied by conducting nonlinear finite element analysis using the software package abaqus. Construction stage analysis control go to results load combinations composite steel girder design you can manually add the load combinations or choose to autogenerate the load combinations as per csas614.

Lusas bridge is used by engineers worldwide for all types of bridge analysis, design and load rating from simple slab deck bridges, steel trusses, integral bridges and bowstring arch bridges, through to box girder, movable, cable stayed and suspension bridges. The computer program descus ii will perform the complete analysis of a horizontally curved bridge composed of steel box sections which act either compositely. Curved deck on straight parallel beam design bridge. Horizontally curved bridges and bridges with other special geometric elements, such as splayed girders, do not necessarily expand and. Igirder bending component tests philosophy and design of. Modeling, analysis, design, scheduling, load rating, and reporting. The work included in this project is the testing to failure of two full sized curved plate girder assemblies and one full sized curved steel box girder, the evaluation of test results. Mar 27, 2018 performing analysis on complex bridges, such as curved or flared structures, is a difficult task given the approximations and assumptions inherent in any modeling approach. Girder is a graphical user interface that allows easy access to devices like lights, security systems, home theater. Structural design software provides software created using microsoft windows excel 201020 or 2016 office 365. The models are made with varying radius of curvature and. Which software is used to design a bridge specially steel.

Concrete bridge design, analysis software leap bridge. The results are design recommendations for the details of such abutments. For now, let me provide you with a short list of some pop. Wisdot bridge manual chapter 24 steel girder structures. These tools were previously packaged together and posted to the txdot engineering software webpage as utcgat ut curved girder analysis tools. Structural design software collection structural design spreadsheets.

Florida, interchange, curved, concrete, u girder, bridge. Steel bridge design, analysis software leap bridge steel. A new field is available for curved girder systems to locate the leftmost girder relative to the superstructure definition. Curved precast prestressed concrete bridge girder systems. Unlike some analysis systems lusas bridge allows you to idealise your composite deck curved girder structure in a number of ways. Curved girder analysis with curved girder structures significant torsional stresses must be accounted for at the design stage and careful consideration is also required to ensure their safe erection.

Top 500 design firms and state dots to design and rate steel girder bridges. Sep 23, 20 steel composite curved girder bridge design midas civil online training midas simulation of success. The leading software package for designing and rating curved and straight steel girder bridges for compliance. This report, in conjunction with the companion report on fmite element analysis of curved bridges, provides a complete set of analysis procedures for the design and checking of curved steel girder bridges. Bridgelink is another free software in this bridge design software list for windows. Design and rating for curved steel i and box girder bridge. The main purpose of this study is to investigate the static behavior of a horizontally curved prestressed concrete psc girder. Design and analysis of curved i girder bridge system. Contractors prefer curved girders because it simplifies. Benefit from the software s advanced load rating and analysis capabilities, such as linegirder, grillage, and finite element analysis. The girders may have high degree of curvature, may be nonconcentric, bifurcated, and may contain hinges. Currently we only have line girder design software here at the office merlin dash.

Wisdot bridge manual chapter 24 steel girder structures july 2019 245 24. Guidelines for steel girder bridge analysis aashtonsba tg for standard curved or skewed structures, use of a conventional grid model is generally adequate. Structural design software collection structural design. Stateoftheart of curved girder bridge programs 33 degree of automation a further obstacle that tends to deter engineers from specifying curved girder bridges is the shear amount of detail necessary to extract a design. It lets you design different kinds of bridge projects including box girder, spectra, curved, prestressed girder, ibeams, ubeams, and many more. Benefit from the softwares advanced load rating and analysis capabilities, such as linegirder, grillage, and finite element analysis, which will enable you to evaluate steel bridges faster and deliver. Ut lift is a spreadsheetbased program for analyzing steel girders during lifting while ut bridge is a threedimensional finite element program for analyzing partially or. Any opinions, findings and conclusions or recommendations expressed in this publication are those of the authors and do not necessarily reflect the. The bridge may be of arbitrary plan configuration and can be continuous and skewed over supports. Steel bridge design handbook american institute of steel. Construction staging is an integrated utility program designed specifically for the construction staging of a curved steel bridge.

So the deck edge will be variable from about 9 to 49. Girder automation software for home automation and. 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. I have analyzed several curved steel girder bridges with descus.

It has a file wizard that ask you question by question what the characteristics of your bridge and spans are. Horizontally curved bridges with or without skewed supports and with a maximum lr greater than 0. If you want your girder model train bridge to curve, you will have to use straight sections of the girders and connect them at angles to form the curve. Implementation of straight and curved steel girder. In this paper, models of box girder and i girder bridges are created in midas civil software which is found to give very accurate results. Key words curved igirder bridge, bridge design, lrfd, constructibility, bolted field. It is used routinely for all types of architectural bridges with slender or curved shapes, and. Program scope the program models the bridge structure as a twodimensional grid in a stiffness format with three degreesoffreedom at each nodal point corresponding torsion, shear, and bending moment. Curved plate girder design for safe and economical construction aashtonsba steel bridge collaboration, s 10.