Zobrazeno 1 - 10
of 19
pro vyhledávání: '"I. J. JORDAAN"'
Publikováno v:
Canadian Journal of Civil Engineering. 28:562-573
The main focus of the paper is the framework for analysing ice loads on the Confederation Bridge across the Northumberland Strait, using probabilistic methods. Safety targets were given as a beta factor of 4.0 for a 100-year lifetime, amounting to a
Autor:
K. J. Muggeridge, I. J. Jordaan
Publikováno v:
Journal of Glaciology. 45:449-455
During a full-scale iceberg-impact study conducted in July 1995 on the Labrador coast, Canada, a sample of ice was retrieved from the impacted surface of an iceberg. The sample was thin-sectioned and the observations of the contact-zone microstructur
Publikováno v:
Magazine of Concrete Research. 29:59-69
Synopsis The applicability of methods of plastic analysis to reinforced concrete curved beams is investigated and the results of experiments on seven straight and eight curved beams are presented. The straight beams were tested under different combin
Autor:
I. J. Jordaan, M. A. Nessim
Publikováno v:
Civil Engineering Systems. 6:83-91
Probabilistic models are given for estimatingthe error content in a structure afte.r thre" application of a checking strategy with given efficiency. The use of these models to optimize the level of effort expended on error control is illustrated. The
Autor:
M. M. A. Khalifa, I. J. Jordaan
Publikováno v:
International Journal for Numerical Methods in Engineering. 11:883-895
The analysis of stresses and deformations in concrete structures subjected to temperature gradients is described. As a result of the spatial variation of temperature, the creep compliance is a function of position. Previous work has shown that the co
Autor:
I. J. Jordaan, M. A. Nessim
Publikováno v:
Journal of Energy Resources Technology. 107:356-361
A decision-theoretic approach to the problem of optimizing strategies for the protection of submarine pipelines against ice scour is presented. The model simultaneously considers twinning, deep trenching, and valve segmentation. The opitmal solution
Autor:
B R Gamble, I J Jordaan
Publikováno v:
Matériaux et Constructions. 7:37-43
The paper outlines a direct method of linear creep analysis of ageing concrete structures based on the classical elastic-viscoelastic analogy. The method develops from a constitutive relationship which accounts for reversible and irreversible strain
Autor:
I. J. Jordaan
Publikováno v:
Matériaux et Constructions. 13:29-40
Six simple requirements are presented for constitutive equations for creep of concrete stressed within the working range. The resulting theory is not complete, but a unique representation of irreversible creep is obtained. The use of products of age
Autor:
I. J. Jordaan, W. P. Maddock
Publikováno v:
Canadian Journal of Civil Engineering. 9:663-673
Recent work has focussed attention on the increasing complexity of structural codes of practice. The question arises: how should a proposed code provision, which might embody a simplification, be assessed? It is suggested that decision theory can be
Autor:
J. M. Illston, I. J. Jordaan
Publikováno v:
Matériaux et Constructions. 4:371-377
Creep tests are reported in which sealed concrete specimens were loaded at the early age of 1 day and maintained under load for a further 61 days. Three systems of compressive stress were applied, uniaxial, equal biaxial and hydrostatic, all principa