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ICE Proceedings

E-ISSN: 1753-7789

Volume 87, Issue 1, March 1989

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EXPERIMENTAL INVESTIGATION OF THE AGGREGATED DEAD ZONE MODEL.
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- pp. 1–22
- Authors: SG WALLIS; PC YOUNG; KJ BEVEN
- Document Type: Research Article
- DOI: 10.1680/iicep.1989.1450
- Proc. Instn Ciu. Engrs, Part 2,1989,87, Mar., 1-22 PAPER 9335 WATERGROUP ENGINEERING Experimental investigation the aggregated of dead zone model longitudinal solute for transport in stream channels S. G. WALLIS, PhD* P. c.YOUNG, MSc, MA, PhD, MIEE, MRAeSt K. J. BEVEN, PhD? In this Paper, initial results obtained from a detailed study o the aggregated dead zone f (ADZ) model for longitudinal solute transport and dispersion in river and channel flow are presented...
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MEASUREMENT AND ANALYSIS OF INSHORE WAVE CLIMATE.
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- pp. 23–38
- Author: A J CHADWICK
- Document Type: Research Article
- DOI: 10.1680/iicep.1989.1451
- Proc. lnstn Civ. Engrs, Part 2,1989,87, Mar., 23-38 PAPER 9341 MANAGEMENT ENGINEERING GROUP Measurement andanalysis of inshore wave climate A.J. CHADWICK, BSC, MSC, MICE, MIWEM* A new system for the field measurement and analysis of the inshore wave climate has been developed. This is based on a single microcomputer based system. It offers several advantages over more conventional systems in terms of cost, flexibility and speed of wave data retrieval and analysis. Its principal components, performance and cost are described...
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THEORETICAL STUDY OF THE BEHAVIOUR OF REINFORCED CONCRETE BEAMS STRENG -THENED BY EXTERNALLY BONDED STEEL PLATES.
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- pp. 39–55
- Authors: TM ROBERTS; H HAJIKAZEMI
- Document Type: Research Article
- DOI: 10.1680/iicep.1989.1452
- Proc. Instn Ciu. Engrs, Part 2,1989,87, Mar., 3 9 5 5 PAPER 9344 STRUCTURAL ENGINEERING GROUP Theoretical studyof the behaviour of reinforced concrete beams strengthened by externally bonded steel plates T. M. ROBERTS, BSc, PhD, MICE, MIStructE* H. HAJI-KAZEMI, BSc, MSC* A theoretical investigation of the displacements, strains and stresses in reinforced concrete beams, strengthened on the tension faces by externally bonded steel plates, is described. Solutions indicatethat the shear and normal stresses, in and adjacent to the adhesive layers, increase rapidly towards the ends of the steel plates and depend on the shear and normal stiffnesses of the connection and on the thicknesses and points of termination of the steel plates...
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AIR-REGULATED SIPHON WITH NOVEL ARRANGEMENT FOR AIR ADMISSION.
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- pp. 57–71
- Authors: RC PRETTYJOHNS; E MARKLAND
- Document Type: Research Article
- DOI: 10.1680/iicep.1989.1453
- Proc. Instn Ciu. Engrs, Part 2,1989,87, Mar., 57-71 PAPER 9362 ENGINEERING WATER GROUP Air-regulated siphon with novel arrangement for air admission R. C. PRETTYJOHNS, BSc, PhD, AMIMechE* E. MARKLAND, DSc, FICE, FIMechEt on The Paper describes laboratory tests a siphon in which air regulation is achieved through two pipes which dip into the surface the headwater. Oneof these dip pipes admits air to of the crown of the siphon passage, and the other admits air at the crest...
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SEISMIC RESPONSE OF MODERN SUSPENSION BRIDGES TO ASYNCHRONOUS LONGITUDINAL AND LATERAL GROUND MOTION.
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- pp. 73–86
- Authors: AA DUMANOGLU; RT SEVERN
- Document Type: Research Article
- DOI: 10.1680/iicep.1989.1454
- Proc. InstnCiv. Engrs, Part 2,1989,87, Mar., 7386 PAPER 9389 STRUCTURAL ENGINEERING GROUP Seismic response of modern suspension bridges to asynchronous longitudinal and lateral ground motion A. A. DUMANOGLU, BSc, MSc, PhD* R. T. SEVERN, DSc, FEng, FICE* The finite speed of travel of an earthquakeis considered in terms of its effect on long-span suspension bridges of the modem type, which have flexible towers, inclined hangers and a box-deck. While previous papers have discussed ground acceleration input in the vertical direction, this Paper deals with longitudinal and lateral inputs, concluding that they are as important as vertical input...
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ULTIMATE STRENGTH ANALYSIS OF THREE-DIMENSIONAL BRACED I-BEAMS.
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- pp. 87–112
- Authors: YC WANG; DA NETHERCOT
- Document Type: Research Article
- DOI: 10.1680/iicep.1989.1455
- Proc. Instn Ciu. Engrs, Part 2,1989,87, Mar., 87-1 12 PAPER 9410 STRUCTURAL ENGINEERING GROUP Ultimate strength analysis of three-dimensional braced I-beams Y. C. WANG, BSc, PhD* D. A. NETHERCOT, BSc, PhD, MIStructE* The interrelationship between bracing stiffness, bracing force and the ultimate load of the braced member has been investigated for a selection of representative cases using a finite element program. The program, which allows for both initial deformation and spread of plasticity in the main member, wasfirst verified against existing experimentaland theoretical results...
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THEORETICAL EFFECT OF EXTERNAL PRESSURE ON SPIRAL STRANDS.
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- pp. 113–118
- Author: M RAOOF
- Document Type: Research Article
- DOI: 10.1680/iicep.1989.1456
- Proc. Instn Ciu. Engrs, Part 2,1989,87, Mar., 113-1 18 TECHNICAL NOTE 517 STRUCTURAL ENGINEERING GROUP Theoretical effect external pressure of on spiral strands M. RAOOF, PhD, DIC* Some new developments in respect of a model capable of analysing realistic multi-layered strands are discussed. An insight is giveninto the effect of high external hydrostatic pressures on cable axial stiffness and hysteresis. Such high pressures can significantly influence the pattern of interwire contact forces in sealed strands. Assuming that interwire fretting is the prime cause of fatigue failure, the increased levels of contact forces, especially in the case of free bending fatigue at the sea-bed termination, may also seriously affect the cable's fatigue performance...
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TECHNICAL NOTE. CORRELATION BETWEEN CALIFORNIA BEARING RATIO AND DYNAMIC CONE PENETROMETER STRENGTH MEASUREMENT OF SOILS.
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- pp. 119–125
- Authors: JA HARISON; MC GRANT; A NATAATMADJA; GR WOODMAN
- Document Type: Research Article
- DOI: 10.1680/iicep.1989.1457
- Proc. Instn Ciu. Engrs, Part 2,1989,87, Mar., 119-125 DISCUSSION ON TN 463 GROUND ENGINEERING GROUP Correlation between California bearing ratio and dynamic cone penetrometer strength measurement of soils J. A. Harison Mr M. C.Grant, Roughton & Partners Mr Harison describes the results of a laboratory correlation between a simple instrument, generally used for in situ assessment of road pavements, and the standard CBR test. Compared with previous work,'his Fig. 8 indicates surprisingly little scatter of the results, thus suggesting a greater precision that should be accorded to it...
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DISCUSSION. REINFORCED CONCRETE DEEP BEAMS: A METHOD OF ANALYSIS.
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- pp. 127–129
- Authors: NK SUBEDI; HHA WONG
- Document Type: Discussion
- DOI: 10.1680/iicep.1989.1458
- Proc. Instn Civ.Engrs, Part 2,1989,87, Mar., 127-129 DISCUSSION ON PAPER 9158 STRUCTURAL ENGINEERING GROUP Reinforced concrete deep beams :a method of analysis N. K. Subedi Dr H. H. A. Wong, Ove Arup and Partners, London Dr Subedi proposes an alternative method for the analysis of deep beams, which raises a number of interesting questions. For example, how were the specimens cast? If they were cast upright, the concrete of the upper portion of the test beams is likely to be weaker, thereby increasing the possibility of crushing the concrete under load...
ON THE PREDICTION OF FLOOD FREQUENCY IN SAUDI ARABIA.
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- pp. 131–133
- Authors: MA NOUH; RB BULMAN
- Document Type: Research Article
- DOI: 10.1680/iicep.1989.1459
- Proc. Instn Cio. Engrs, Part 2,1989,87, Mar., 131-133 DISCUSSION ON PAPER 9279 WATER ENGINEERING GROUP On the prediction of flood frequency in Saudi Arabia M. A. Nouh Mr R.B. Bulman, Consultant The Author has gleaned a great deal of information from an area with such sparse records. However, some points need to be clarified. 53. In the Notation, the definition of Q requires some modification to agree with that given in Q 6. Would the Author not agree that there are advantages in relying on the median value rather than the arithmetic mean of a series of annual maxima? 54...
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DISCUSSION. WAVE GROUPING AND HARBOUR DESIGN.
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- pp. 135–142
- Authors: EC BOWERS; EPD MANSARD; V BARTHEL; ER FUNKE; P KLINTING; OJ JENSEN
- Document Type: Discussion
- DOI: 10.1680/iicep.1989.1460
- Proc. Instn Ciu. Engrs., Part 2,1989,87, Mar., 135-142 DISCUSSION PAPER ON 9266 MARITIME ENGINEERING GROUP Wave grouping and harbour design E. C . Bowers E. P. D. Mansard, V. Barthel and E. R. Funke, National Research Council of Canada, and P Klinting and 0. J. Jensen, Danish Hydraulic Institute . We wish to compliment the Author on a well-written Paper on a topic which has troubled many experimentalists in coastal engineering for some time...
PREDICTION OF CRACK WIDTHS IN CIRCULAR VOIDED CONCRETE SLABS SUBJECTED TO LONGITUDINAL BENDING.
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- pp. 143–146
- Authors: TOS ODUYEMI; LA CLARK; J SPRINGFIELD
- Document Type: Research Article
- DOI: 10.1680/iicep.1989.1461
- Proc. lnstn Ciu. Engrs, Part 2, 1989,87, Mar., 143-146 DISCUSSION ON PAPER 9303 STRUCTURAL ENGINEERING GROUP Prediction of crack widths in circular voided concrete slabs subjected to longitudinal bending T. 0.S. Oduyemi and L. A. Clark Mr J. Springiield, Carruthers & Wallace Limited, Toronto Having experienced malperformance of reinforced concrete voided slabs (as distinct from similar prestressed slabs), my attention was drawn to this Paper. I was even more intrigued, by the superficial suggestion at least, that performance of voided slabs is superior to solid slabs...
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DISCUSSION. PORTLAND-PULVERIZED FUEL ASH CONCRETES: WATER DEMAND, 28 DAY STRENGTH, MIX DESIGN AND STRENGTH DEVELOPMENT.
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- pp. 147–153
- Authors: D W HOBBS; H T CAO; W B BUTLER
- Document Type: Discussion
- DOI: 10.1680/iicep.1989.1462
- Proc. Instn Civ. Engrs, Part 2, 1989,87, Mar., 147-153 DISCUSSION ON PAPER 9322 STRUCTURAL ENGINEERING GROUP Portland-pulverized fuel ash concretes : water demand, 28 day strength, mix design and strength development D. W. Hobbs Mr H. T. Cao, Division of Building Construction and Engineering, CSIRO, Australia Dr Hobbs's Paper presents a very promising aspect of measuring potential performance of a fly ash in concrete by way of the cement replacement factor. The idea is very appealing since this factor has the potential of being used for characterization of fly ash or any other mineral additives...
EARLY THERMAL CRACKING IN END-RESTRAINED THICK REINFORCED CONCRETE MEM -BERS.
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- pp. 155–158
- Authors: BP HUGHES; AT MAHMOOD; J SPRINGFIELD
- Document Type: Research Article
- DOI: 10.1680/iicep.1989.1470
- Proc. Instn Ciu. Engrs, Part 2,1989,87, Mar., 155-158 DISCUSSION ON PAPER 9321 STRUCTURAL ENGINEERING GROUP Early thermal cracking in end-restrained thick reinforced concrete members B. P. Hughes and A. T. Mahmood Mr J. Springfield, Carruthers & Wallace Limited, Toronto Since the publication of a much earlier paper by the first Author,* I have followed his recommendations when it has been imperative to control crack widths in concrete members. At that time, the Author postulated that unless the tensile yield capacity of the reinforcement was at least equal to the tensile cracking capacity of the concrete section, the reinforcement could not force the concrete to crack in a dispersed manner of fine crack widths...
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ICE - Institution of Civil Engineers - Virtual Library

ICE Proceedings

Volume 87, Issue 1, March 1989