Highways Agency Report

             Shelfmark: SSR/UNI/37
       Personal author: Middleton C. R.
                 Title: A plasticity approach to the assessment of shear in
                        cincrete beam-and-slab structure
             Publisher: Cambridge University Engineering Department, 1997
  Physical description: 43p., charts
                 Price: Unpriced
                Series: A generalised collapse method for concrete bridges,
                        draft version
       Notes - general: A 2-D upper-bound plastic model for the assessment of
                        shear in concrete beam-and-slab bridges was documented
                        in Interim Report no. 1.  A more general 3-D collapse
                        anaysis is formulated here, which involvesfailure of
                        the slab and beams.  Calibrated from the 2-D theory is
                        extened to this mechanism analysis and comparison
                        carried out against recent experimental tests
                        conducted atcambridge University Engineering
                        Department under the same contract.  It is shown that
                        the method has potential for use as a possible shear
                        assessmenttool.  It is, however, emphasised that the
                        method relies on adequate ductility of the structure,
                        so that the Engineer needs to be fully aware of the
                        limited range of applicability of this plastic
                        analysis technique.  It finally concluded that further
                        work in this field is justified as the method has
                        proved an adequate model, based on comparisons with
                        the few tests used as calibration.
               Keyword: Stress Analysis
 CONTRACTOR REPORT
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