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Computer Analysis of Steel Box Girder Bridges
The purpose of this study is to present an efficient and reliable computer program which can be used to design/analyze straight and curved single or multi-span, composite box girder bridges. The computer program uses the finite-difference method to solve the Vlasov differential equations which describe the load-deformation response of a curved box girder. This program will perform an analysis or design a single prismatic or non-prismatic straight or curved box girder under AASHTO criteria. The box section may be a single unit of the bridge or a member of a multiple box system. The box may be either non-composite or composite construction. The section can have internal transverse diaphragms spaced along the box and top lateral bracing. Output contains influence line ordinates, stresses on top and bottom flanges at locations along the span due to (1) Dead Load, (2) Superimposed Dead Load and (3) Live Load. Force envelopes including moment, shears, torsion and bimoment are given for all load combinations. Influences due to bending, torsion, warping and distortion are included. Stress envelope is given for use in fatigue design. Specifications (AASHTO) are utilized to establish allowable stresses, web and flange stiffening requirements and shear stud spacing. Resulting girder deflections and rotations, due to sequential concrete placements, can also be determined for specified length of pours. Composite/non-composite action may be assumed after the concrete hardens.
Computer Analysis of Steel Box Girder Bridges
The purpose of this study is to present an efficient and reliable computer program which can be used to design/analyze straight and curved single or multi-span, composite box girder bridges. The computer program uses the finite-difference method to solve the Vlasov differential equations which describe the load-deformation response of a curved box girder. This program will perform an analysis or design a single prismatic or non-prismatic straight or curved box girder under AASHTO criteria. The box section may be a single unit of the bridge or a member of a multiple box system. The box may be either non-composite or composite construction. The section can have internal transverse diaphragms spaced along the box and top lateral bracing. Output contains influence line ordinates, stresses on top and bottom flanges at locations along the span due to (1) Dead Load, (2) Superimposed Dead Load and (3) Live Load. Force envelopes including moment, shears, torsion and bimoment are given for all load combinations. Influences due to bending, torsion, warping and distortion are included. Stress envelope is given for use in fatigue design. Specifications (AASHTO) are utilized to establish allowable stresses, web and flange stiffening requirements and shear stud spacing. Resulting girder deflections and rotations, due to sequential concrete placements, can also be determined for specified length of pours. Composite/non-composite action may be assumed after the concrete hardens.
Computer Analysis of Steel Box Girder Bridges
C. P. Heins (author) / F. H. Sheu (author)
1981
230 pages
Report
No indication
English
Highway Engineering , Construction Equipment, Materials, & Supplies , Girder bridges , Box beams , Highway bridges , Finite difference theory , Computer programming , Loads(Forces) , Deformation , Dynamic response , Materials specifications , Box girders , Fortran 4 programming language , Univac 1108 computers , Computer applications
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