DETERMINING SERVICEABILITY DEFLECTIONS IN PLASTICALLY DESIGNED STRUCTURES
Methods for determining the deflections at service loads in plastically designed structures are presented. A number of approaches to calculating these deflections are considered, since the usual method of performing a completely separate elastic analysis of the plastically designed structure is generally very cumbersome unless a computer is available. The alternative methods considered are: (a) direct estimation from plastic bending moment distribution; (B) correction approach; (C) exact calculation using a newly developed theorem; and (D) an approximate procedure using estimates of the bending moment diagrams for use in the unit dummy load method. Several examples are worked to illustrate the methods. It is shown that method (C) is a powerful direct and accurate technique for most simple structures (A). (TRRL)
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Availability:
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Corporate Authors:
Institution of Engineers
11 National Circuit
Barton, A.C.T., Australia -
Authors:
- Melchers, R E
- Clarke, G J
- Publication Date: 1981-1
Media Info
- Features: Figures; References;
- Pagination: p. 74-79
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Serial:
- Institution of Engineers (Australia) Civ Eng Trans
- Volume: CE23
- Issue Number: 1
- Publisher: Institution of Engineers
- ISSN: 0819-0259
Subject/Index Terms
- TRT Terms: Bending moments; Calculation; Deflection; Design; Design methods; Elastic analysis; Elastoplasticity; Loads; Methodology; Plasticity; Serviceability; Structures
- Uncontrolled Terms: Elastic plastic analysis
- Old TRIS Terms: Elastic analysis (Structural)
- Subject Areas: Bridges and other structures; Design; Highways; I24: Design of Bridges and Retaining Walls;
Filing Info
- Accession Number: 00342220
- Record Type: Publication
- Source Agency: ARRB
- Files: ITRD, TRIS
- Created Date: Dec 22 1981 12:00AM