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E-ISSN: 1753-7789

Volume 89, Issue 1, March 1990

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PLANAR MODELLING TECHNIQUES FOR ASYMMETRIC BUILDING STRUCTURES.
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- pp. 1–14
- Authors: B STAFFORD SMITH; M CRUVELLIER
- Document Type: Research Article
- DOI: 10.1680/iicep.1990.5248
- Proc. Instn Ciu. Engrs, Part 2, 1990,89, Mar., 1-14 PAPER 9381 STRUCTURAL ENGINEERING GROUP Planar modelling techniques for asymmetric building structures B. STAFFORD-SMITH, DSc, PhD, BSc,FICE* M. CRUVELLIER, BEng, MEngt A simple methodof forming a planar model for the two-dimensional computer analysisa of three-dimensional asymmetric structure that translates and twists under horizontal load is presented. The structure must consist parallel bents which may be of any type and whose of properties may vary with height. The bents and member properties are represented directly in the model, without transformation, while the results for displacements and forces from the analysis may be read directly, also without transformation...
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SOME OBSERVATIONS ON NESTED MODELLING OF FLOW AND SOLUTE TRANSPORT IN RECTANGULAR HARBOURS.
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- pp. 15–38
- Authors: MARDAPITTA; HADJIPANDELI; R A FALCONER
- Document Type: Research Article
- DOI: 10.1680/iicep.1990.5249
- Proc. lnstn Cio. Enyrs, Part 2, 1990,89, Mar., 15-38 PAPER 9472 Some observations on nested modelling of flow and solute transport in rectangular harbours L. MARDAPITTA-HADJIPANDELI, BSc, PhD* R. A. FALCONER, BSc(Eng),MSCE, PhD, DIC, MICE, MASCE, MIWEMt The Paperhighlights some comparisons between the results obtained from a nested numerical model and a physical model study to investigate the tide induced circulation and exchange characteristics for an idealized schematic rectangular harbour, which has four different aspect (or length to breadth) ratios...
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THE COLEBROOK-WHITE EQUATION - AN OFT CITED RESULT BUT NEGLECTED DERIVATION ?
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- pp. 39–45
- Authors: G D MATTHEW; COLEBROOK WHITE
- Document Type: Research Article
- DOI: 10.1680/iicep.1990.5250
- Proc. Instn Cio. Engrs, Part 2,1990,89, Mar., 3 9 4 5 PAPER 9481 WATER GROUP ENGINEERING The Colebrook-White equation-an oft cited result but neglected derivation? G. D. MATTHEW, BScEng, PhD, MICE* In this Paper, it is argued that the derivation of the 50 year old Colebrook-White equation, as well as the much cited result itself, is deserving of recognition in that it offers, in the context of fluid mechanics teaching, a single and coherent approach to smooth-, transition-, or rough-pipe friction...
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TRANSVERSELY STIFFENED GIRDER WEBS SUBJECTED TO SHEAR LOADING - PART 1 : BEHAVIOUR.
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- pp. 47–65
- Authors: K N RAHAL; J E HARDING
- Document Type: Research Article
- DOI: 10.1680/iicep.1990.5251
- Proc. lnstn Cio. Enyrs, Part 2,1990,89, Mar., 47-65 PAPER 9483 STRUCTURAL ENGINEERING GROUP Transversely stiffened girder webs subjected to shear loading-part 1 :behaviour K.N. RAHAL, PhD* J. E. HARDING, PhD, DIC, MICE, FStructE* This Paper uses fully non-linear numerical analysis to examine parametrically the effect of geometrical panel and stiffener properties and initial imperfections on the behaviour of transverse stiffeners in grder web plates subject to shear loading. Particular attention is paid to the way in which the various geometrical parameters affect the deflexion of the stiffener and the peak capacity of the stiffened plate...
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TRANSVERSELY STIFFENED GIRDER WEBS SUBJECTED TO SHEAR LOADING - PART 2 : STIFFENER DESIGN.
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- pp. 67–87
- Authors: K N RAHAL; J E HARDING; B RICHMOND; BS 5400
- Document Type: Research Article
- DOI: 10.1680/iicep.1990.5252
- Proc. Instn Ciu. Engrs, Part 2, 1990,89, Mar., 67-87 PAPER 9484 STRUCTURAL ENGINEERING GROUP Transversely stiffened girder webs subjectedto shear loading-part 2 :stiffener design K. N. RAHAL, PhD* J. E. HARDING, PhD, DIC, MICE, FStructE* This Paper examines the bases of current design formulations for transverse stiffeners in girder webs and compares these with the results of numerical studies carried out by the Authors. A simple analytical model is then formulated which reproduces the numerical parametric results more consistently...
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HYPOTHESIS FOR SHEAR FAILURE IN MASONRY JOINTS.
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- pp. 89–102
- Authors: J R RIDDINGTON; M Z GHAZALI
- Document Type: Research Article
- DOI: 10.1680/iicep.1990.5253
- Proc. Instn Ciu. Engrs, Part 2,1990,89, Mar., 89-102 PAPER 9489 STRUCTURAL ENGINEERING GROUP Hypothesis for shear failure in masonryjoints J. R. RIDDINGTON, BSc, PhD, MICE* M. Z . GHAZALI, MSc, PhD, MIEMf A hypothesis for shear failure in masonry jointsis presented. This proposes that shear failure is initiated by joint slip at precompression stresses below approximately 2 N/mm2, butthat at higher stress levels, shear failure is initiated by tensile failure within the mortar. Test and finite element analysis results are presented which are shown to support this failure hypothesis...
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COMPARISON BETWEEN THE PERFORMANCE OF NEWLY MANUFACTURED AND WELL-USED SPIRAL STRANDS.
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- pp. 103–120
- Author: M RAOOF
- Document Type: Research Article
- DOI: 10.1680/iicep.1990.5254
- Proc. Instn Ciu. Engrs, Part 2, 1990,89, Mar., 103-120 PAPER 9546 STRUCTURAL ENGINEERING GROUP Comparison between the performance newly of manufactured and well-used spiral strands M. RAOOF, PhD, DIG* Spiral strands are employed for many structural purposes, including the prestressing of concrete, stays for guyed masts, and bridging applications such as hangers for suspension bridges and the main cables of cable-stayed designs. The safety of many deep water platform concepts, including tethered buoyant structures is, among other considerations, strongly dependent on the reliability of the mooring systems...
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DISCUSSION. AIR-REGULATED SIPHON WITH NOVEL ARRANGEMENT FOR AIR ADMISSION.
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- pp. 121–122
- Authors: R C PRETTYJOHNS; E MARKLAND; M J KENN
- Document Type: Discussion
- DOI: 10.1680/iicep.1990.5255
- Proc. lnstn Ciu. Engrs, Part 2, 1990,89, Mar., 121-122 DISCUSSION ON PAPER 9362 WATER ENGINEERING GROUP Air-regulated siphon with novel arrangement for air admission R. C . Prettyjohns and E. Markland Mr M. J. Kenn, Fellow This Paper illustrates the merits of air-regulated siphon spillways and also helps with the resolutionof certain of the problems of design. 14. The principal virtues of air-regulated siphon spillways are not only that they maintain upstream water levels to within very close limits, over a wide range of discharges, but also that they are simple, sensitive, automatic, reliable, robust, quiet, economic, and entirely free of mechanical and electrical components...
DISCUSSION. MOVEMENT OF UNBONDED POST-TENSIONING TENDONS DURING DEMOLITION.
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- pp. 123–125
- Authors: M S WILLIAMS; A J KAMINKER; P WALDRON; J SPRINGFIELD
- Document Type: Discussion
- DOI: 10.1680/iicep.1990.5256
- Proc. Insrn Cio. Engrs, Part 2, 1990,89, Mar.,123-125 DISCUSSION 9421 ON STRUCTURAL PAPER ENGINEERING GROUP Movement of unbonded post-tensioning tendons during demolition M. S. Williams and P. Waldron Mr J Springfield and Mr A. J. Kaminker, Carruthers & WallaceLimited, Toronto Investigators who undertake research projects of direct application to design and construction deserve the encouragement and gratitude of the design and construction community. The Authors merit particular commendation for undertaking such apracticalproblem as the demolition of structures in which unbonded post-tensioned tendons have been used...

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ICE - Institution of Civil Engineers - Virtual Library

ICE Proceedings

Volume 89, Issue 1, March 1990