Dynamic soil and water pressures of submerged soils

Dynamic soil and water pressures of submerged soils

117A abutments. A reinforced earth retaimng ,*.a!l and a space framed retaining wall. which allov.s xegetation to gro~ on "he ,,all surface, h.:~e bee...

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117A abutments. A reinforced earth retaimng ,*.a!l and a space framed retaining wall. which allov.s xegetation to gro~ on "he ,,all surface, h.:~e been used

explain the cause and e',.tcnt of undcrseepage are presented. The effect of underseepage on the stabilit,, o!" the dam and details of the rehef of well installation, operation and effecn~e~.ess a.'e d:scusscd. Auth.

863313

Elastoplastic soil model analysis of anchored diaphragm ~alls Petraso~.its. G: Czap. Z Proc 6th Budapest Conference on Soil Mechanics and Foundation Engineering,Budapest. 2-5 October 1984 P5635"0. Puhl Budapest .4kademiai Kiado. I9,~4 A design method for a diaphragm ~ail is presented The soii ~., represented according to the theor? of elasticali.,, bedded plates, where bedding stresses ma', var.,, bet'aeen the ,.alues of acti,.e o r passi'.e ear:h pressures. The effects of the construenon schedule and anchor prestresses on wall displacements and ~all and soil ,;tresses are demonstrated. 863314

Earth pressure against sheet pile ,~'alls and slurry trench walls .i.. Pru~,,,a. I. Proc 6th Budapest Conference on Soil Alechanics and Foundation Engineering,Budapest, 2-5 October 1984 PS v /576. Puhl t3udapc,~r ..tkademi,,ti Kiado, 19S4

A simple anal,.sls is presented of the earth pressures agam~z sheet pile and slurry trench walls. The pressure against rammed sheet pries depends upon the thickness of the pile: it exceeds the pressure at rcst and its resultant deviates from the horizontal. For slurry trenches the pressure approximates to that at rest and its resultant is horizontal. If these structures car,, incline or rotate after completion, the earth pressure cap. decline to the acti,,e earth pressure. The displacement for this to occur is greater for the sheet pile ,natl.

Construction methods 863315

Atlas screwpile: an improved foundation technique for the vibration free execution of piles ~ith larger capacit) Imbo, R P Proc 6th Budapest Conference on Soil Alechanics and Foundation Engineering,Budapest, 2-5 October 1984 P3633~2. Puhl Budapest ..Ikudemiai Kiado, 1984 The Atlas BT-40 piling machine is described, v, hich permits the installation of screwpiies in almost all soils where dri,.cn piles can be used. An auger is scre',~ed into the earth, lateralb compressing the soil. and the resultant cavity is filled v. ith cement. The piles have a unique screw shape as a result of the auger being screwed out of the ground and increased bearing capacity because of increased frictional resistance. The calculation of bearing capacit,,, the range of applications of the BT40 and its economic advantages are described.

Groundwater problems 863316

Underseepage at the Loy Yang settling pond dam Fletcher. S J: Pedler. I V Engng Geol V22..V/. Sept 1985. P'I-B/ The koy Yang Settling Pond. ,*as constructed at Traralgon South in the katrobe Valle,.. Victoria. Australia. to ser,.ice the 4000MW b r o ~ n coal-fired ko.~ Yang Power Project during its construction and operation. Filling of the pond commenced and pressures monitored b.~ foundation piezometers and groundwater observation bores indicated that underseepage ',~as occurring. The monitoring and investigation programs are described, and the hydrogeoiogical models postulated to ,

Influence of dynamic loads 86331'7

D,,namic soil and ~ater pressures of submer~ed soils Matsuzav, a. H: Ishibashi. I: Kav, amura. \1 J Geotech Engn,¢ Dir..|SCE ~'1II. VIO. Oct /9x5. PII611 / -6 Currep.t theories and procedures in e,,aluating d',namlc lateral earth and ,.~.ater pressures due to submerged backfill softs against rigid re.taming structures are thoroughi.,, revie,.~.ed. ,-\~ ailablc experimental data are gathered and compared to the theories. A ne~ generalised apparent angle of seismic coct!icient. ~hich can be easil,, used to exaluate dynamic soil and water pressure for a wide range of backfill soil t',pes, is proposed. ]'he ne~ procedure incorporates the effect of the pern:eabi!iL,, and the geometry of the backfill soils and the modes of the ,.'.all mo,.ement. 863318

Liquefaction potential e~aluation for Arcadia Dam Wagner. J R Proc International Conference on Case ttistories in Geotechnical Engineering, Roll,,, Missouri, 6-11 .Way 1984 l'/. P-.'25-432. Puhl St Loui.~': Geotec/zntc~d En,¢ine.ermg. 19S4 Studies performed as part of the liquefaction potential evalua.tion for .Arcadia Dam. Oklahoma, USA. are presented. The "Simplified Procedure" of Seed was used. The ~arious decisions. )udgements and procedures used to adapt the required studies to the site specific conditions are discussed, alone v, ith a description of drilling, sampling, sample handling, a n d l a b o rator'. "esting. A useful relationship bet~cen standard penetration test blo~. count values, laborator', c~,chc shear strength and soil grain size is Rmnd. which enables SPT data from s~lts and silt.,, sands at the sites to be used with the simplified procedure ~hich is based on biow count from relati',el', clean sands. 863319

Pile foundation under liquefied soils Huishan, L: Taiping, Q Proc International Conference on Case Histories in Geotechnical Engineering, R oila, .Wissouri, 6-I 1 .Way 1984 I'1. P433-444. Pub/St Loui,~." Geotechnical Engineering. I984 The Tangshan and Haichen earthquake enabled the aseismic behaviour of ~arious structures to be examined and provided valuable information for further re,,ision of aseismic regulations. The results of in,,estigation of pile foundations resting on potentially liquefiable soils are presented. Laborator? tests were performed to clarity some phenomena. Based upon the investigation, in situ and shaking table tests, some anal,,sis and comments on pile foundation design are made. 863320

Liquefaction risk evaluation during earthquakes Qiao Taiping: Veang Chenchun: Weng Lunian: Liu Huishan Proc International Conference on Case Histories in Geotechnieal Engineering, Rolla, 3,Iissouri, 6-11 .Way 1984 F/. P445-454. P~d,[ St Louis: Geotechnical Engineering. 19x4 A simplified method is presented to e,,aluate liquefaction risk. modified from the form of liquefaction potential index suggested by lwasaki. Tokida and others (1980. 1982). Based upon the investigations of structural dama,.ze caused by soil liquefaction during the Tangshan earthquake-, four categories

1986 Pergamon Press Lt2. Reproduction no' permitted