VERIFICATION OF COMPUTER SIMULATION METHODS FOR SLAB AND GIRDER BRIDGE SYSTEMS

THIS REPORT PRESENTS A DETAILED COMPARISON BETWEEN TYPICAL TEST MEASUREMENTS AND COMPUTERIZED ANALYTICAL SOLUTIONS FOR CONVENTIONAL SLAB AND GIRDER BRIDGES. THE ACCURACY OF APPLYING THE COMPUTER ANALYSIS TECHNIQUES DEVELOPED UNDER PROJECT 3-5-63-56 TO PRESTRESSED CONCRETE, REINFORCED CONCRETE, AND STEEL GIRDER BRIDGES WITH CONCRETE DECK SLABS WAS CONFIRMED BY THE HIGH DEGREE OF CORRELATION BETWEEN TEST RESULTS AND PROGRAM CALCULATIONS. THE METHOD OF INPUTTING GIRDER AND SLAB PHYSICAL PROPERTIES WAS CAREFULLY EXAMINED AND NUMEROUS RECOMMENDATIONS WERE MADE FOR THE PROPER VALUES OF STIFFNESS TO BE INPUT BY DESIGNERS. IN ADDITION, THE EFFECT OF VARIOUS INPUTS ON ACCURACY WAS EXAMINED AND GUIDELINES WERE DEVELOPED SO THAT THE DESIGNER WOULD BE GIVEN AN INDICATION OF WHEN A PRECISE NUMBER WAS NEEDED FOR AN INPUT AND WHEN AN APPROXIMATE NUMBER WOULD SUFFICE. THE BRIDGES STUDIED INCLUDED BOTH SIMPLE AND CONTINUOUS SPANS AND NORMAL AND SKEW CROSSINGS. THE ANALYTICAL METHODS WERE SHOWN TO GIVE A VERY ACCURATE ESTIMATE OF BOTH LOAD DISTRIBUTION CHARACTERISTICS AND SHORT-TERM DEFLECTIONS. THE PROGRAMS SHOULD BE VALUABLE IN THE DESIGN OF STANDARD BRIDGE SYSTEMS AND IN THE INVESTIGATION OF SPECIAL PROGRAMS. IN GENERAL THE EXCELLENT CORRELATION BETWEEN THE PHYSICAL TEST RESULTS AND THE COMPUTER SOLUTIONS SHOULD RESULT IN GREATER CONFIDENCE IN THE RELIABILITY OF THE COMPUTER SOLUTIONS AND A CLEARER SET OF PROCEDURES FOR INPUTING PHYSICAL CONSTANTS. THIS WILL ALLOW MORE ACCURATE DESIGN PROCEDURES FOR SLAB AND GIRDER BRIDGES, WITH CONSEQUENT IMPROVEMENT IN DESIGN AND GREATER RELIABILITY AND ECONOMY. /FHWA/

  • Supplemental Notes:
    • RES STUDY 3-5-68-115
  • Corporate Authors:

    University of Texas, Austin

    Center for Highway Research, 200 West 21st Street
    Austin, TX  United States  78712
  • Authors:
    • Alani, A F
    • Breen, J E
  • Publication Date: 1971-8

Media Info

  • Pagination: 190 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00208071
  • Record Type: Publication
  • Source Agency: Texas State Department of Highways & Public Transp
  • Report/Paper Numbers: No 115-if
  • Files: TRIS, STATEDOT
  • Created Date: Apr 17 1973 12:00AM