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Centrifugal modelling of the bearing capacity of a water-saturated unstabilised clay foundation bed
133A
rix stiffness method ar~ is an extension of a continuum approach presented earlier by the writers. Response curves for piled footings may be calculated using the data presented in the figures for stiffness and damping. Dynamic iroperties of piles are found to be very dependent on the variation of soll properties with depth and on soil material damping. The importance of soil material damping is also demonstrated for shallow rigid footings vibrating in the torsional as well as rocking modes. 786108 FOUNDATION RESPONSE CAUSED BY DISTURBANCE OF CLAY Weber, R P J Geotech Emgng Div, ASCE, Vl04, NGT5, May 1978, P583-592 The history of several selected settlement points at the Prudential Center in Boston, Mass, has been reviewed, and the response of the mat foundation caused by the disturbance of the clay in the installation of piles has been observed. Evidence suggests that the method of installing these piles, predrilling for two-thirds of the depth of the clay, did not completely prevent volume displacements, disturbance, and settlements in the surroumding area. 786109 PERFORMANCE OF ONE SHELL PLAZA DEEP MAT FOUNDATION FOcht, J A; Khan, F R; Gemeinhardt, J P J Geotech Engng Div, ASCE, V104, NGT5, May 1978, P593-608
Site investigation showed that a surface foundation could be adopted provided that the first filling of the tank was controlled to allow sufficient gain in strength of the foundation soils. Tests for soil mechanical properties, the design of the instrumented flexible pad foundation, and the behaviour of the foundation during the controlled teat filling of the tank wlth water, and when subsequently filled with oil, are discussed. 786113 PASSIVE REFRIGERATION FOR ARCTIC PILE SUPPORTS Galate, J W J Engng Ind (Trans AS4E Set B), V98, N2, May 1977, % 9 5 - 7 0 0 786114 MEANS OF INCREASING THE ~F~CTIVENESS AND QUALITY OF FOUNDATIONS C O N S T R ~ OF CAST-IN-PLACE PILES Ermoshkin, P M; Saikina, T V SOil Mech Found Engng, VIB, E6, Nov-Dec 1976,
PB85-392 A wide variation in bearing capacity values for different size cast-in-place piles at the same site was reported. This was investigated by a study of the state of the face of the hole prior to concreting, of the effect of loose soil at the base on bearing capacity, and of concreting methods. 786115 BEARI~3 CAPACITY OF FOUNDATIONS INSTATI~k~DIN A TAMPED RECESS AND SUBJECT TO VERTICAL AND HORIZONTAL FORCES Dondysh, A M Soil Mech Found Engng, VI3, N6, Nov-Dec 1976,
PB92-396
The mat was designed using an iterative ar~Rlytical procedure to include the effects of soilmat interaction in determining foundation movements. The mat was instrumented to measure soil contact pressures and steel stresses. In addition, observations were made to determine total arzl differential mat movements. Performance observations during the 3-yr construction period and for about 6 yr since the structural frame was completed are examined and then compared in a limited way with design predictions.
Reports the experimental tamping of loess-like sandy and clayey soils prone to sl~np-type settlement, and of the laying of test foundations of complex geometric structure, as used for agricultural buildings based on a framework of three-hinge bents. Measurements of displacements and bearing capacity were made under natural moisture cor~itions and with artificial wetting, over a period of time.
786110 DYNAMICS OF RECTAI~3ULAR FOOTINGS BY FINITE ELEMENTS Dasgupta, S P; Kameswsra Rao, N S V J Geotech Engng Div, ASCE, VI04, NGTS, May 1978, P621-637
OF 786116 EFFECT OF ICE CONTENT AND CRYOGENIC S V l ~ FROZEN GROUND ON THE BEARING CAPACITY OF A PILE Eroshenko, V N; Fedoseev, Y G Soll Meeh Found Engng, V13, I%, NOv-Dec 1976, I~02-405
The dynamic response of rectangular footings is analysed in the vertical mode of vibration for 3 possible distributions of vertical contact pressures at the footing-soil interface, using a 3-dimensional finite element method with hexahedra as basic elements. 786111 R~MEDIAL UNDERPINNING OF STEEL TAI~ FOUNDATION Mohan, D; Jain, G R S; Bhandari, R K J Geotech Engng Div, ASCE, V104, h~GTS, May
Reports model teats carried out in a refrigerated chamber on piles made from steel pipe, 6 crn in diameter and i00 cm in length,. Experimental results for the relationship between limit resistance to penetration and ice content of frozen ground are compared with calculated values, and the effect of cryogenic structure is illuatrated. A means of incorporating this effect in calculating the bearing cagacity of piles is proposed.
1978, ~39-9-6955 Reports remedial measures for a flexible reinforced concrete raft suppsrted by a group of driven cast in situ piles, cracking having been observed during the water load test at about 60 per cent of the teat load. 786112 FOUNDATION FOR AN OIL STORAGE TAI~( ON QUATERNARY SOILS NEAR BRIDGW~I'R~, SOMERSET Hinch, L W; Martin, P L Q J Engng Geol, V9, NB, 1976, P237-254
786.117 ."ENTRIFL~AL MDDELLING OF THE BEARING CAPACITY OF A __~ER-SATUP~a'~UUNSTABILISED CLAY FOUNDATION BED Rt~Inltskii, N Y; Malakhova, K V SOil Mech Fotmd Engng, VI3, N6, NOv-Dec 1976,
~lO-~14 Describes the preparation of a model clay foundation bed for use in a centrifugal system. A steel plate was used as a model of a strip foundation to study the effect of rapid incremental
SoilM%eh i+oWEp6p3& Vl3, d, NovcDeclYi'6, P&14-419 UBeskmma~d.mationm&hod~tosc&vethe intqpl eqlitit~on which r&tes aeplacapant ~oontecf~8~ewith@thfwari#sunk%nplat&Theeffectofthewai&t of the sail ien&colldd%m& The work is concmw wikh the int%rPr%tationofplatetestsinholes.
786123 soil&e& Foudl m,Vl3, P335-338
4, Sept-Ott1976,
~IEWEWITHTKEIBSIGNAND COIWEWCTIONOF REma ExllDIIJosmDERlxmmmDSOILmsSURESINWFWNSK RWzxtt&iizNY; M%l&hcm,KV;Apo&olli,AD SoilMmhFom¶Engm& v13, N5, Sapt-octlfl6, =92-295 Repcds We appliqationof a d+gn nmthd which useeemationsbasedonthe ~seionnuxluli ardrangeOflin%ardeformabilityof soilsratherthanon Boil &re@h. At the site deacribedinMm?agndt,foWationawmeB%eigntdfar mlti%tm~~6tob%%rect%tionglacial ariftwhichwas C~Sedop aiJ.tyto&+aveuy cards, aaderaveXlyurrubble-llkecor@un%rate. The=thodwasdevelop%d8sarcsultuff3t~es onthe &fere&ctioninwi&hof f-t&on strip8for foudatione which till be subjectto deformation. SINGLE+PJIECGT.UMNSUWQRT~AFRAMEBUILDING nn, G U; Gilabarg,L Kj m, T I soilMechFomiEagng,V13, N5, Sepb-O&196, P229-303 Diacu~sesthedmignaduse of single cad-inplace piles at sites where the soil.is liable to sluqpdype s&t&smnt. Ino~example, piles@ 5O&trndiamtertithap&eetdofl6~ad le~ofpl~were~atae;tfeintheUkrainewherethe Bubsoilwae aloeee-like clay over fine SE&S. EFFWTOFAXADDEDSOILMASSANDITSNONLINEAR PRO@Rl?IESON FWRWL!IONVIBRATION l3arka.n,DD;Sha%vich,VM soiImchFmndEillgag,v13, N5, wept;-OctlY76, P304-309
786124 PLACIblGPILESINPERMW@T wcrld con&r, ~30, N12,"~ec1977, ~64-67
7*125 COM!RIBUPIONTOTR!ZSJQDY OFlcBEVX@W!URY DRIVINGOFSKEWPZUES:TBER4XEOFIRBB$t@LDAMPINGINAHIGH~QUE.WYWZ!?iB-BAR~3PBrI(IIi FRJ=Cd Si%ffert,JG BullLialsonLab PontsChaufmee, Ng5,MayJxme 1978,P5-12 Athemetiod 6tdy ofthe effectofiq &utql~tyJQIlth%8sn@i~eofd-f~ionofthe pile a8 afmctionof tb@ eXcitati0nf"rsqusn0y. RemXtsfromal~aWryt%st sh~good~~~~-
mentwith
theory.
ON i5lwL.mw FOUNDATIONS,lg@1976 (IN mBm) Giroti,J P BuULW.aonLab 1978, P21-30
786126F?iENCH REkSARCH
Ananalysis ofrmthc&3 useda& a eumaryof case sfvdieelikelyto bs H int%re%tto the engineer. 118 refe.
786127
rix stiffness method ar~ is an extension of a continuum approach presented earlier by the writers. Response curves for piled footings may be calculated using the data presented in the figures for stiffness and damping. Dynamic iroperties of piles are found to be very dependent on the variation of soll properties with depth and on soil material damping. The importance of soil material damping is also demonstrated for shallow rigid footings vibrating in the torsional as well as rocking modes. 786108 FOUNDATION RESPONSE CAUSED BY DISTURBANCE OF CLAY Weber, R P J Geotech Emgng Div, ASCE, Vl04, NGT5, May 1978, P583-592 The history of several selected settlement points at the Prudential Center in Boston, Mass, has been reviewed, and the response of the mat foundation caused by the disturbance of the clay in the installation of piles has been observed. Evidence suggests that the method of installing these piles, predrilling for two-thirds of the depth of the clay, did not completely prevent volume displacements, disturbance, and settlements in the surroumding area. 786109 PERFORMANCE OF ONE SHELL PLAZA DEEP MAT FOUNDATION FOcht, J A; Khan, F R; Gemeinhardt, J P J Geotech Engng Div, ASCE, V104, NGT5, May 1978, P593-608
Site investigation showed that a surface foundation could be adopted provided that the first filling of the tank was controlled to allow sufficient gain in strength of the foundation soils. Tests for soil mechanical properties, the design of the instrumented flexible pad foundation, and the behaviour of the foundation during the controlled teat filling of the tank wlth water, and when subsequently filled with oil, are discussed. 786113 PASSIVE REFRIGERATION FOR ARCTIC PILE SUPPORTS Galate, J W J Engng Ind (Trans AS4E Set B), V98, N2, May 1977, % 9 5 - 7 0 0 786114 MEANS OF INCREASING THE ~F~CTIVENESS AND QUALITY OF FOUNDATIONS C O N S T R ~ OF CAST-IN-PLACE PILES Ermoshkin, P M; Saikina, T V SOil Mech Found Engng, VIB, E6, Nov-Dec 1976,
PB85-392 A wide variation in bearing capacity values for different size cast-in-place piles at the same site was reported. This was investigated by a study of the state of the face of the hole prior to concreting, of the effect of loose soil at the base on bearing capacity, and of concreting methods. 786115 BEARI~3 CAPACITY OF FOUNDATIONS INSTATI~k~DIN A TAMPED RECESS AND SUBJECT TO VERTICAL AND HORIZONTAL FORCES Dondysh, A M Soil Mech Found Engng, VI3, N6, Nov-Dec 1976,
PB92-396
The mat was designed using an iterative ar~Rlytical procedure to include the effects of soilmat interaction in determining foundation movements. The mat was instrumented to measure soil contact pressures and steel stresses. In addition, observations were made to determine total arzl differential mat movements. Performance observations during the 3-yr construction period and for about 6 yr since the structural frame was completed are examined and then compared in a limited way with design predictions.
Reports the experimental tamping of loess-like sandy and clayey soils prone to sl~np-type settlement, and of the laying of test foundations of complex geometric structure, as used for agricultural buildings based on a framework of three-hinge bents. Measurements of displacements and bearing capacity were made under natural moisture cor~itions and with artificial wetting, over a period of time.
786110 DYNAMICS OF RECTAI~3ULAR FOOTINGS BY FINITE ELEMENTS Dasgupta, S P; Kameswsra Rao, N S V J Geotech Engng Div, ASCE, VI04, NGTS, May 1978, P621-637
OF 786116 EFFECT OF ICE CONTENT AND CRYOGENIC S V l ~ FROZEN GROUND ON THE BEARING CAPACITY OF A PILE Eroshenko, V N; Fedoseev, Y G Soll Meeh Found Engng, V13, I%, NOv-Dec 1976, I~02-405
The dynamic response of rectangular footings is analysed in the vertical mode of vibration for 3 possible distributions of vertical contact pressures at the footing-soil interface, using a 3-dimensional finite element method with hexahedra as basic elements. 786111 R~MEDIAL UNDERPINNING OF STEEL TAI~ FOUNDATION Mohan, D; Jain, G R S; Bhandari, R K J Geotech Engng Div, ASCE, V104, h~GTS, May
Reports model teats carried out in a refrigerated chamber on piles made from steel pipe, 6 crn in diameter and i00 cm in length,. Experimental results for the relationship between limit resistance to penetration and ice content of frozen ground are compared with calculated values, and the effect of cryogenic structure is illuatrated. A means of incorporating this effect in calculating the bearing cagacity of piles is proposed.
1978, ~39-9-6955 Reports remedial measures for a flexible reinforced concrete raft suppsrted by a group of driven cast in situ piles, cracking having been observed during the water load test at about 60 per cent of the teat load. 786112 FOUNDATION FOR AN OIL STORAGE TAI~( ON QUATERNARY SOILS NEAR BRIDGW~I'R~, SOMERSET Hinch, L W; Martin, P L Q J Engng Geol, V9, NB, 1976, P237-254
786.117 ."ENTRIFL~AL MDDELLING OF THE BEARING CAPACITY OF A __~ER-SATUP~a'~UUNSTABILISED CLAY FOUNDATION BED Rt~Inltskii, N Y; Malakhova, K V SOil Mech Fotmd Engng, VI3, N6, NOv-Dec 1976,
~lO-~14 Describes the preparation of a model clay foundation bed for use in a centrifugal system. A steel plate was used as a model of a strip foundation to study the effect of rapid incremental
SoilM%eh i+oWEp6p3& Vl3, d, NovcDeclYi'6, P&14-419 UBeskmma~d.mationm&hod~tosc&vethe intqpl eqlitit~on which r&tes aeplacapant ~oontecf~8~ewith@thfwari#sunk%nplat&Theeffectofthewai&t of the sail ien&colldd%m& The work is concmw wikh the int%rPr%tationofplatetestsinholes.
786123 soil&e& Foudl m,Vl3, P335-338
4, Sept-Ott1976,
~IEWEWITHTKEIBSIGNAND COIWEWCTIONOF REma ExllDIIJosmDERlxmmmDSOILmsSURESINWFWNSK RWzxtt&iizNY; M%l&hcm,KV;Apo&olli,AD SoilMmhFom¶Engm& v13, N5, Sapt-octlfl6, =92-295 Repcds We appliqationof a d+gn nmthd which useeemationsbasedonthe ~seionnuxluli ardrangeOflin%ardeformabilityof soilsratherthanon Boil &re@h. At the site deacribedinMm?agndt,foWationawmeB%eigntdfar mlti%tm~~6tob%%rect%tionglacial ariftwhichwas C~Sedop aiJ.tyto&+aveuy cards, aaderaveXlyurrubble-llkecor@un%rate. The=thodwasdevelop%d8sarcsultuff3t~es onthe &fere&ctioninwi&hof f-t&on strip8for foudatione which till be subjectto deformation. SINGLE+PJIECGT.UMNSUWQRT~AFRAMEBUILDING nn, G U; Gilabarg,L Kj m, T I soilMechFomiEagng,V13, N5, Sepb-O&196, P229-303 Diacu~sesthedmignaduse of single cad-inplace piles at sites where the soil.is liable to sluqpdype s&t&smnt. Ino~example, piles@ 5O&trndiamtertithap&eetdofl6~ad le~ofpl~were~atae;tfeintheUkrainewherethe Bubsoilwae aloeee-like clay over fine SE&S. EFFWTOFAXADDEDSOILMASSANDITSNONLINEAR PRO@Rl?IESON FWRWL!IONVIBRATION l3arka.n,DD;Sha%vich,VM soiImchFmndEillgag,v13, N5, wept;-OctlY76, P304-309
786124 PLACIblGPILESINPERMW@T wcrld con&r, ~30, N12,"~ec1977, ~64-67
7*125 COM!RIBUPIONTOTR!ZSJQDY OFlcBEVX@W!URY DRIVINGOFSKEWPZUES:TBER4XEOFIRBB$t@LDAMPINGINAHIGH~QUE.WYWZ!?iB-BAR~3PBrI(IIi FRJ=Cd Si%ffert,JG BullLialsonLab PontsChaufmee, Ng5,MayJxme 1978,P5-12 Athemetiod 6tdy ofthe effectofiq &utql~tyJQIlth%8sn@i~eofd-f~ionofthe pile a8 afmctionof tb@ eXcitati0nf"rsqusn0y. RemXtsfromal~aWryt%st sh~good~~~~-
mentwith
theory.
ON i5lwL.mw FOUNDATIONS,lg@1976 (IN mBm) Giroti,J P BuULW.aonLab 1978, P21-30
786126F?iENCH REkSARCH
Ananalysis ofrmthc&3 useda& a eumaryof case sfvdieelikelyto bs H int%re%tto the engineer. 118 refe.
786127