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ICE Proceedings

E-ISSN: 1753-7789

Volume 91, Issue 4, December 1991

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COASTAL WAVE CLIMATE CATEGORIZATION USING WIND DATA.
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- pp. 631–644
- Authors: T S HEDGES; R BURROWS; P J DICKINSON; WACCAS
- Document Type: Research Article
- DOI: 10.1680/iicep.1991.17482
- Proc. Instn Ciu. Engrs, Part 2, 1991, 91, Dec., 631-644 PAPER 9710 MARITIMEBOARD Coastal wave climate categorization using wind data T. S . HEDGES, BEng, MEng, MICE* R. BURROWS, BEng, PhD, MICE* P. J. DICKINSON, BSc, MSc(Eng)t The Paper describes the development a suite of computer programs for the categorization of of nearshore wave climates, in terms of storm events, using wind data. The objective was to produce a low-cost monitoring package for coastal zones with which, for example, changes in beach conditions couldbe correlated with the seventy of associated storms...
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MEASUREMENT OF OVERBANK FLOW IN A COMPOUND RIVER CHANNEL.
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- pp. 645–657
- Authors: L A MARTIN; W R C MYERS; MANNING; DARCY WEISBACH
- Document Type: Research Article
- DOI: 10.1680/iicep.1991.17483
- Proc. Instn Cio. Engrs, Part 2, 1991, 91, Dec., 645-657 PAPER 9729 WATERBOARD Measurement of overbank flow in a compound river channel L. A. MARTIN,BSc, PhD* W. R. c. MYERS, BA,BSc, PhD, MICE? The results of an experimental study of a compound river channel have been presented, including velocity distributions and stage discharge relationships. These have illustrated the effects of momentum transfer between deep and shallow flows, which include reduction in main channel velocity and discharge capacity, leading to a reduction in compound section capacity at depths above bankfull...
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PARTIAL SHEAR CONNECTION IN COMPOSITE BEAMS FOR BUILDINGS.
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- pp. 679–704
- Authors: R P JOHNSON; N MOLENSTRA; EPPIB
- Document Type: Research Article
- DOI: 10.1680/iicep.1991.17485
- h o c . lnstn Ciu. Engrs, Part 2, 1991, 91, Dec., 679-704 PAPER 9744 BUILDING BOARD STRUCTURAL AND Partial shear connection composite beams in for buildings R. P. JOHNSON, MA, FEng, FICE, FIStructE* IR N. MOLENSTRA, PhDt The use of partial shear connection in composite beams requires that the slip capacity of the connectors shall not be less than the maximum slip required for the to reach its design beam ultimate load. Maximum slip depends on many parameters, of which degree of shear connection and span are the most significant...
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USING A COMBINED SLOPE HYDROLOGY-STABILITY MODEL TO DEVELOP CUT SLOPE DESIGN CHARTS.
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- pp. 705–718
- Authors: M G ANDERSON; D M LLOYD
- Document Type: Research Article
- DOI: 10.1680/iicep.1991.17486
- Proc. fnstn Ciu. Enyrs, Part 2, 1991, 91, Dec., 705-718 PAPER 9758 GROUND BOARD Using a combined slope hydrology-stability model to develop cut slopedesign charts M. G. ANDERSON, BSc, PhD, DSc* D. M. LLOYD, BSc, PhD? Slope instability in the tropics is often attributed to the effect of rainfall infiltration-the dynamic hydrological conditioncontrolling stability. ThisPaper describes a physically based, coupled, two-dimensional slope hydrology-slope stability model that has been developed to investigate this control...
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AN UNSTEADY FLOW BORE MODEL FOR SEDIMENT TRANSPORT IN BROKEN WAVES. PART 1: THE DEVELOPMENT OF THE NUMERICAL MODEL.
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- pp. 719–737
- Author: A J CHADWICK
- Document Type: Research Article
- DOI: 10.1680/iicep.1991.17487
- Proc. Instn Ciu. Engrs, Part 2, 1991, 91, Dec., 719-737 PAPER An unsteady flow bore model sediment for transport in broken waves. Part 1 :the development of the numerical model A. J. CHADWICK, BSc, MSc, PhD, MICE, MIWEM* The paper is concerned primarily with numerical model studies of unsteady flow in the surf and swash zones using bore propagation models, and the resulting longshore transport of coarse non-cohesive materials.The development of a new numerical model of oblique bores on beaches, coupled with a uniform flow field sediment transport equation, is described...
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AN UNSTEADY FLOW BORE MODEL FOR SEDIMENT TRANSPORT IN BROKEN WAVES. PART 2: THE PROPERTIES, CALIBRATION AND TESTING OF THE NUMERICAL MODEL.
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- pp. 739–753
- Author: A J CHADWICK
- Document Type: Research Article
- DOI: 10.1680/iicep.1991.17488
- Proc. Instn Civ. Engrs, Part 2, 1991, 91, Dec., 739-153 E PAPER 9761 An unsteady flow bore model sediment for transport in broken waves. Part2: the of properties, calibration and testing the numerical model A. J. CHADWICK, BSc, MSc, PhD, MICE, MIWEM* The properties of an unsteady flow bore model of sediment transport in broken waves are described and theinfluence of the principal external parameters controlling longshore transport areillustrated. An attempt toreformulate the predictionsof the model in algebraic form is made and shown to be inappropriate...
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FINITE-ELEMENT ANALYSIS OF MASONRY ARCH BRIDGES USING TAPERED ELEMENTS.
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- pp. 755–770
- Authors: B S CHOO; M G COUTIE; N G GONG
- Document Type: Research Article
- DOI: 10.1680/iicep.1991.17489
- Proc. Instn Cic. Engrs, Part 2, 1991, 91, Dec., 755-770 PAPER 9114 BUILDING BOARD STRUCTURAL AND Finite-element analysis of masonry arch bridges using tapered elements B. S. CHOO, BSc. PhD* N. G. GONG, MSc* In this Paper, the development of a tapered beam element model is discussed and used to simulatethebehaviour of a masonry arch brldge under loading.The collapse solution recognizes the inability of the arch materlal to carry tension, and the effective arch ring is modified as cracksdevelop...
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WAVE-INDUCED FAILURE OF POROELASTIC SEABED SLOPES: A BOUNDARY ELEMENT STUDY.
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- pp. 771–794
- Authors: W RAMAN NAIR; G C W SABIN; BIOT; MOHR; COULOMB
- Document Type: Research Article
- DOI: 10.1680/iicep.1991.17490
- Proc. Instn Cio. Engrs, Part 2, 1991, 91, Dec., 771-794 PAPER 9779 BOARD MARITIME Wave-induced failureof poroelastic seabed slopes: a boundary element study W. RAMAN-NAIR, BSc, MEng,PhD* G. C . W. SABIN, BSc, MSc, PhD* of The effect of wave forces on the stabilitya sloping seabed is investigated, using linear wave theory and Biot's theory of poroelasticity. The wave forces on the slope, the wave induced effective stressesand pore pressures are all computed by the boundary element method...
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LAMINAR MOTION OF FLUID MUD.
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- pp. 795–821
- Authors: K H M ALI; K GEORGIADIS
- Document Type: Research Article
- DOI: 10.1680/iicep.1991.17491
- Proc. lnstn Ciu. Engrs, Part 2, 1991, 91, Dec., 795-821 PAPER 9801 WATER BOARD Laminar motionof fluid mud K. H. M. ALI, MEng, PhD* K. GEORGIADIS, BEng* The Papergives the results of an experimental investigation into the formation of fluid mud under laminar flow conditions. Various initial concentrations and channel slopes were used. Measurements were made of the average velocity, fluid-mud thickness, elevation and density. Fluid mud was observed for sediment concentrations in the range 3oo(r70000 ppm, and for channel slopes of 0,1 : 20, 1 : 10 and 1 : 5...
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ENERGY LOSSES IN PILE-DRIVING DUE TO SOIL RATE EFFECTS AND HAMMER MISALIGNMENT.
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- pp. 823–851
- Author: T J POSKITT
- Document Type: Research Article
- DOI: 10.1680/iicep.1991.17492
- Proc. Instn Ciu. Engrs, Part 2, 1991, 91, Dec., 823-851 PAPER 9832 GROUND BOARD Energy losses in pile-driving due to soil rate effects and hammer misalignment T. J. POSKITT, PhD, DSc, FICE, FIStructE* The various factors which influence piledriving are considered. In particular, these are examined to see how they contribute to the generally sceptical attitude of engineers towards of these formulae for dynamic pile-driving formulae, and to thecontinuingpopularity designing piles. Two major factors are identified: the first relates to the omission of rate effects in dynamic formulae, while the second concerns misalignment of the hammer...
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ANALYSIS OF IN-SITU RETAINING WALLS PROPPED AT FORMATION LEVEL.
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- pp. 853–873
- Authors: W POWRIE; ESF LI
- Document Type: Research Article
- DOI: 10.1680/iicep.1991.17493
- Proc. Znstn Ciu. Engrs, Part 2, 1991, 91, Dec., 853-873 PAPER 9730 GROUND BOARD Analysis of in-situ retaining walls propped at formation level The use of formation level props to support an embedded cantilever retaining wall can be advantageous in terms of minimizing thedepth of embedment required for stability/ serviceability. This type of wall is being used increasingly for grade-separated interchanges in connection with road improvement schemes in urban areas. Unfortunately, the analysis of these structures is not straightforward: indeed, they are specifically excluded from the ambit of CIRIA Report 1 0 4 on the design of retaining walls embedded in stiff clay...
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TECHNICAL NOTE. ELASTIC STABILITY OF COMPOSITE TEE-BEAMS STRENGTHENED BY PRESTRESS.
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- pp. 875–885
- Author: M A BRADFORD
- Document Type: Research Article
- DOI: 10.1680/iicep.1991.32721
- Proc. Instn Ciu. Engrs, Part 2, 1991, 91, Dec., 875-885 TECHNICAL NOTE 563 STRUCTURAL AND BUILDING BOARD Elastic stabilityof composite tee-beams strengthened by prestress M. A. BRADFORD,BSc, BE, PhD, MASCE, MIE Aust* An example is presented to illustrate the strength gain from prestressing the steel portion of an existing simply-supported composite tee-beam with a straight tendon. The distortional instability of the steel joist which may occur under the eccentric prestress is then analysed. A design chart is presented for calculating the elastic critical stress in the bottom flange, and hence the prestressing force to cause elastic distortional buckling, which in some cases may govern the design...
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DISCUSSION. POLYSTYRENE AGGREGATE CONCRETE SUBJECTED TO HARD IMPACT.
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- pp. 887–889
- Authors: P H BISCHOFF; K YAMURA; S H PERRY; SIR A HARRIS
- Document Type: Discussion
- DOI: 10.1680/iicep.1991.17495
- Proc. Instn Ciu. Engrs, Part 2, 1991, 91, Dec., 887-889 DISCUSSION ON PAPER 9538 STRUCTURAL ENGINEERING GROUP Polystyrene aggregate concrete subjected to hard impact P. H. Bischoff, K. Yamura and S. H. Perry Professor Sir Alan Harris,Harris & Sutherland Impact loading can of various kinds, as follows be (a) sufficiently frequent and predictable to require a design based on energy dissipated elastically and ensuring adequate fatigue life and energy to rupture: e.g. ships coming alongside berths,vehicles striking protective barriers on motorways (b) high energy impact which, although foreseeable, occurs only very rarely and for which itis enough to ensure survivalof the structureeven at the expense of considerable damage: e...
DISCUSSION. LARGE-SCALE MODEL TESTS AND PLASTIC ANALYSIS OF MULTIBAY INFILLED FRAMES.
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- pp. 891–894
- Authors: K H KWAN; C Q LO; T C LIAUW; P C PANDEY
- Document Type: Discussion
- DOI: 10.1680/iicep.1991.17496
- Proc. Insrn Ciu. Engrs, Part 2, 1991, 91, Dec., 891-894 9571 STRUCTURAL ENGINEERING DISCUSSION ON PAPER GROUP Large-scale model tests and plastic analysis of multibay infilled frames K. H. Kwan,C . Q. Lo and T. C . Liauw Dr P C. Pandey, Indian Institute o Science, Bangalore . f The experimental investigation presented in the Paper is limited to single-bay two-storey to two-bay two-storey infilled frame models with steel frames and concrete infills. In some of the models, the Authors have also provided shear connectors...
DISCUSSION. REINFORCED CONCRETE RESISTIVITY MEASUREMENT TECHNIQUES.
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- pp. 895–898
- Authors: S G MILLARD; W J MCCARTER; WENNER
- Document Type: Discussion
- DOI: 10.1680/iicep.1991.17497
- Proc. Instn Ciu. Engrs, Part 2, 1991, 91, Dec., 895-898 DISCUSSION ON PAPER STRUCTURAL BUILDING 9674 AND BOARD Reinforced concrete resistivity measurement techniques S. G. Millard Dr W. J. McCarter, Department o Civil Engineering, Heriot-Watt University, f Edinburgh The Paper describes the application of the Wenner geophysical method of subsurface exploration to reinforcedconcrete, and highlightsanumber of factors which must be considered in the interpretation surface resistivity measurements. of 46. The results from the Wenner method represent an apparent resistivity of the concrete down to a particular level, this level being determined by electrode spacing and resistivity of the conducting medium...
CORRIGENDA. EFFECT OF SUPPORT CONDITIONS IN LIQUID-FILLED SPHERICAL VESSELS.
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- pp. 899
- Authors: A ZINGONI; M N PAVLOVIC
- Document Type: Research Article
- DOI: 10.1680/iicep.1991.17498
- Proc. Instn Civ. Engrs, Part 2, 1991, 91, Dec., 899 Corrigenda Effect of support conditions in liquid-filled spherical vessels; Part 2: inclined supand Proc. ports. A. ZINGONI M. N. PAVLOVIC. Instn Ciu. Engrs, Part 2, 1991,91, June, 347-363. p. 347: Synopsis, last line p. 352: Q 12, line 3 p. 360: Q 19, line 1 For `including' read `inclining'. For ` equation ' read question '...
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ICE - Institution of Civil Engineers - Virtual Library

ICE Proceedings

Volume 91, Issue 4, December 1991