Computerized of R.C. beams

Τίτλος

Computerized of R.C. beams

Θέμα

Computer-aided design

Girders

Reinforced concrete

FORTRAN (Computer program language)

Computer software--Development

Δημιουργός

Constantinides, Michalis G.

Πηγή

Higher Technical Institute

Το πλήρες κείμενο είναι διαθέσιμο από το Υπουργείο Ενέργειας, Εμπορίου Βιομηχανίας και Τουρισμού.

Εκδότης

Library of Cyprus University of Technology

Ημερομηνία

1995

Συνεισφέρων

Papaleontiou, C. G.

Δικαιώματα

Απαγορεύεται η δημοσίευση ή αναπαραγωγή, ηλεκτρονική ή άλλη χωρίς τη γραπτή συγκατάθεση του δημιουργού και κάτοχου των πνευματικών δικαιωμάτων.

Μορφή

pdf

Γλώσσα

eng

Τύπος

text

Αναγνωριστικό

CED0257

Σύνοψη

The aim of design is to provide safety through out the working life of a stmcture.
The basic approach in designing for safety is the assessment of loads under worst conditions in
the stmcture that are expected to occur in practice. These loads are called working loads.
The designer's aim is to provide a substantial margin of strength between the working condition
and the strength of the stmcture. This margin of strength is provided by taking into account
uncertainties in the loading, the strength of materials and the constmction process.
It is the way in which this margin is provided that the various design methods differ.
The "elastic" design method aims at ensuring that the working stresses do not exceed a set of
defined permissible stresses which are obtained by reducing the material strengths by a safety
factor.
The "ultimate load" or "load factor" method uses ultimate loads obtained by increasing the
working loads by a safety factor and it aims to ensure that the strength of the stmcture, calculated
using the expected actual material strength, is sufficient to support this ultimate loading.
The methods described above use a single safety factor. This is called global safety factor
approach.
The limit state method of design provides a set of partial safety factors, one for each material and
type of load. These factors take into account all the uncertainties mentioned above. This
approach in dealing with uncertainties, except of being more logical, has the following advantage
over the other design methods. For stmctures subjected simultaneously to different types of
loading, the critical design condition arises when one loading is at its maximum value and the
other at its minimum value. The global factor approach automatically increases both maximum
and minimum loads giving a less critical condition while in the partial factor approach only the
maximum load is increased.
The aim of the project is to develop a computer program for the design of reinforced concrete
beams as integral parts of a plane frame. To do so, programming skills had to be developed.
Also, for the needs of the project, the developer had to familiarize with a computer program for
the analysis of plane frames developed by H.T.I students in 1994 as part of their 3rd year project.
The computer language chosen is FORTRAN because it has superiority over other languages in
numerical and engineering applications.