ANALYSIS OF MULTIBEAM BRIDGES WITH BEAM ELEMENTS OF SLAB AND BOX SECTION

SINGLE-SPAN, RIGHT, MULTIBEAM BRIDGES HAVING BEAM ELEMENTS OF SOLID OR HOLLOW SECTION ARE ANALYZED. THE ANALYSIS TREATS THE BEAMS AS INDIVIDUAL ELEMENTS, CONNECTED TO ONE ANOTHER BY FRICTIONLESS HINGES WHICH SIMULATE THE SHEAR KEY AND TRANSVERSE RODS CONNECTING THE BEAMS. THE LONGITUDINAL, VERTICAL, AND TRANSVERSE JOINT FORCES AT EACH HINGE ARE TAKEN AS THE UNKNOWN FUNCTIONS. THE COMPATIBILITY CONDITIONS FOR THE DISPLACEMENTS AT EACH HINGE PROVIDE BASIC EQUATIONS FOR FINDING THE JOINT FORCES. SINCE THE BEAMS ARE ELASTIC AND SIMPLY SUPPORTED AT THEIR ENDS, FOURIER SERIES EXPANSIONS OF ALL THE FORCES AND DISPLACEMENTS ARE USED TO REDUCE THE PROBLEM TO THE SOLUTION OF SETS OF SIMULTANEOUS LINEAR ALGEBRAIC EQUATIONS. SINCE THE FOURIER SERIES FOR THE JOINT FORCES EITHER DO NOT CONVERGE OR ELSE CONVERGE TOO SLOWLY FOR PRACTICAL USE, A METHOD OF ACCELERATING THE CONVERGENCE OF THE FOURIER SERIES FOR THE JOINT FORCES IS PRESENTED, BASED ON A STUDY OF THE ASYMPTOTIC BEHAVIOR OF THE COEFFICIENTS OF THE FOURIER SERIES. THIS METHOD IS COMPUTATIONALLY PRACTICAL AND LEADS TO THE EXPLICIT DETERMINATION OF THE MOST IMPORTANT CHARACTERISTICS OF THE JOINT FORCES. RESULTS FOR THE JOINT FORCE DISTRIBUTIONS AND THE SHEARS AND MOMENTS IN THE BEAMS ARE PRESENTED IN TABLES FOR SELECTED, PRACTICAL MULTIBEAM BRIDGES COMPOSED OF FOUR AND EIGHT BEAMS. /AUTHOR/

• Supplemental Notes:
  • No 483, 33 PP
• Authors:
  • Pool, R B
  • Arya, A S
  • Robinson, A R
  • Katchaturian, N
• Publication Date: 1965

Media Info

• Serial:
  • Illinois Univ Eng Exp Sta Bulletin

Subject/Index Terms

• TRT Terms: Analysis; Beams; Box beams; Bridge construction; Bridge foundations; Bridges; Construction; Dislocation (Geology); Equations; Force; Fourier series; Hinges; Linear algebra; Linear equations; Longitudinal joints; Simultaneous equations; Slabs; Tables (Data); Transverse joints
• Uncontrolled Terms: Convergence
• Old TRIS Terms: Vertical joints
• Subject Areas: Bridges and other structures; Construction; Highways;

Filing Info

• Accession Number: 00208308
• Record Type: Publication
• Files: TRIS
• Created Date: Jun 13 1994 12:00AM