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Construction of soft soil: Estimation and behaviour (in French)
II8A
Dams and embankments
conditions. Finite element analyses for bearing capacity and earth pressure problems are performed using this relationship. The results explain various deformation and failure bahavlours of soil foundations. 83~19~ CONSTRUCTION OF SOFT SOIL: ESTIMATION AND BEHAV~OUR (~N ~RENCH ) Recordon, E; Despond, J M; Bourdeau, P Proc 10th International Conf~ence on Soil Mechanics and Foundation Er~ineering, Stockholm, 15-19 JUne i~81, V2, F239-2~5. Publ Rotterdam: A. A. Bslkema, 1981 The results frc~ using models to estimate the behaviour of various surface structures are compared with site measurements. 834196 FUll SCALE TEST LOADING OF A BULKHEAD Thompson, C D; Stevenson, C A; Emery, J J Proc lOth Internatiomal Conference on Soil Mechar~ics and Fourdation Emgine~ing, Stockholm, 15-19 June 1981, V2, P281-285. Publ Rotterdam: A. A. Balkema, 1981
See also: 83~095, 83~302, 83~308 83~199 LEWISHAM ESTATE FJTS DOWN NEW ROOTS Dadson, J New Civ Engr, N529, 24 Feb 1983, P41-42 Root piles were used to stabilise an embarAkment in London, UK, which had become unstable due to the death of trees on the slope. 83~200 DRAINS STABILISE A38 EMBANKMENT New Civ Er~r, N526, 3 Feb 1983, P21 Plans to construct earth embankments to carry the Fcrder Valley interchamge of the %38, Devon, UK, over the weal silt alluvium include staged loading of the embar~ment and use of vertical wick drains to accelerate pore ~ater dissipation and thus settlement.
8S42Ol THREE-D]~ENSIONAL ANALYSIS OF INFIU~NILLO DAM D U R I ~ CONSTRUCTION AND FILLIP3 OF THE RESERVOIR Justo, J L; Saura, J Int J ~ Anal Meth Geomech, VT, N2, AprilJune 1983, P22~-2~3
Test loading was undertaken on an ore dock to determine the potential for increasing pile heights. Inclinumeters, piezcmeters, extensometers amd precise surveys were used to monitor the c o n t r o l l e d placirg of a 26m high limestone test loading. This generated pore pressures of up to 0.73 times the applied pressure, lateral movements of up to 13ram amd anchor rod relaxation. Effective stress stability ar~lyses indicated a minimmm safety factor of 1.2 for the test icadimg, that would decrease to less than unity for a full 20.7m h i ~ ore loading. Finite element analyses confirmed the elastic nature of observed movements, and anchor relaxation. ANALYSIS 83~197 NONLINEAR DIFFERENTIAL ~ Zhamg, C X; Zhang, N R; Z~amg, F L Proc lOth International Conference on Soil Mechanics ar~ Foundation Er~Ineerir~, Stockholm, 15-19 June 1981, V2, P~91-2~. Pt~l Rotterdam: ~. ~. Balk~na, 1981
A three-dimenslorml finite element program has been prepared to study the behavlour of Infier~illo dam durir~ construction and filling of the reservoir. A linear stress-strain behaviour of materials has been assumed. The parameters are ded~Iced from the movements measured during construction, checked with the results of oedometer tests at the laboratc~y. Collapse of the t~stream shell is ~ntroduced into the calculation in a simple way from the settlement observed upon flooding ~ c o n s t a n t stress at the oedometer. A good agre~m~ent is found between meas%~ed and calculated movements.
834202 ~rmu-A'S OF FLUID RESISTANCE IN THE M I ~ WASTE D A M - ~ A E PROSU~ Je~almlan, J K Ixf@ J ~mn Anal Meth Geomech, V7, N1, JamMarch 1983, R~7-100
A one dimensional consolidation-sheer model based upon a broken-line relationship between shear modttlus and strain on a l o g - l ~ plot is proposed to explain the non-linear differential settlement behaviou~ observed durirg the construction of a building in BeiJing. 8 3 4 1 ~ TRIAL TRENCH CONSTRUCTION IN LONDON CIAY: A GROUND MOVEMENT STUDY AT BRACMNELL Chard, B M; Symons, I F Transport and Road Resesrch Laboratc~y relx~'t LR 1051, 1982, 14P A full scale field trial to determine the magnitude and distribution of groumd m ~ v e m ~ t s produced by deep trenchiDg was carried out in London Clay, at ~racknell, Be~kahlre, b~. The trench 5m deep, im wide and 25m long was constructed progressively in 5 bays of eqlml l e ~ to st~xly the influence of trench g e ~ on %he ground movement. Surface and s~su~f~ce movements and pare water pressure were monitored. The main cause of movement was found to be the excavation operation, and to a lesser extent backfillimg operations. Lateral movements wrote at all stages greater than vertical movements.
Liquefaction of mine tailings dams causes the tailimgs to flow over isrge distances. A l:rocedure for the flow analysis of these tailirgs is ;resented. This incorporates a laminar resistance term into the ~ a l l o w water theory. 83~203 DEVELOPMENT OF CENTRIFUGAL MCDELs TO STUDY THE INFLUENCE OF UPLIFT PRESSURES ON THE STABILITY OF A FLOOD BANK Padfield, C J; Schofield, A N Geotechnique, V33, N1, Msrch 1983, P57-66 Small-scalej two-dimensional models, representimg a clay flood embankment built on a clay foumdation layer overlying a pervious granular layer, were tested in a centrifuge. Results indicated that the uplift presst~es may modify the nature of the most critical failure mechanism, but do not a~pear %O &re~t!y affect s~fety factors against collapse. The study relates to fail~Tes of the Thames flood embankments.
8~.2~
COUPLED DYNAMIC BEHAVIOUR OF REALISTIC ARCH DAMS INCLUDING HYDRODYNAMIC AND F~HDATI@N
IkL'~z~ACTION Avail: TRRL, Crowthorne, B ~ k s , UK
!'.ath, B; Potamitis, S G Inst Civ Engr Proc, vv3, Sept 1982, P587-607
Dams and embankments
conditions. Finite element analyses for bearing capacity and earth pressure problems are performed using this relationship. The results explain various deformation and failure bahavlours of soil foundations. 83~19~ CONSTRUCTION OF SOFT SOIL: ESTIMATION AND BEHAV~OUR (~N ~RENCH ) Recordon, E; Despond, J M; Bourdeau, P Proc 10th International Conf~ence on Soil Mechanics and Foundation Er~ineering, Stockholm, 15-19 JUne i~81, V2, F239-2~5. Publ Rotterdam: A. A. Bslkema, 1981 The results frc~ using models to estimate the behaviour of various surface structures are compared with site measurements. 834196 FUll SCALE TEST LOADING OF A BULKHEAD Thompson, C D; Stevenson, C A; Emery, J J Proc lOth Internatiomal Conference on Soil Mechar~ics and Fourdation Emgine~ing, Stockholm, 15-19 June 1981, V2, P281-285. Publ Rotterdam: A. A. Balkema, 1981
See also: 83~095, 83~302, 83~308 83~199 LEWISHAM ESTATE FJTS DOWN NEW ROOTS Dadson, J New Civ Engr, N529, 24 Feb 1983, P41-42 Root piles were used to stabilise an embarAkment in London, UK, which had become unstable due to the death of trees on the slope. 83~200 DRAINS STABILISE A38 EMBANKMENT New Civ Er~r, N526, 3 Feb 1983, P21 Plans to construct earth embankments to carry the Fcrder Valley interchamge of the %38, Devon, UK, over the weal silt alluvium include staged loading of the embar~ment and use of vertical wick drains to accelerate pore ~ater dissipation and thus settlement.
8S42Ol THREE-D]~ENSIONAL ANALYSIS OF INFIU~NILLO DAM D U R I ~ CONSTRUCTION AND FILLIP3 OF THE RESERVOIR Justo, J L; Saura, J Int J ~ Anal Meth Geomech, VT, N2, AprilJune 1983, P22~-2~3
Test loading was undertaken on an ore dock to determine the potential for increasing pile heights. Inclinumeters, piezcmeters, extensometers amd precise surveys were used to monitor the c o n t r o l l e d placirg of a 26m high limestone test loading. This generated pore pressures of up to 0.73 times the applied pressure, lateral movements of up to 13ram amd anchor rod relaxation. Effective stress stability ar~lyses indicated a minimmm safety factor of 1.2 for the test icadimg, that would decrease to less than unity for a full 20.7m h i ~ ore loading. Finite element analyses confirmed the elastic nature of observed movements, and anchor relaxation. ANALYSIS 83~197 NONLINEAR DIFFERENTIAL ~ Zhamg, C X; Zhang, N R; Z~amg, F L Proc lOth International Conference on Soil Mechanics ar~ Foundation Er~Ineerir~, Stockholm, 15-19 June 1981, V2, P~91-2~. Pt~l Rotterdam: ~. ~. Balk~na, 1981
A three-dimenslorml finite element program has been prepared to study the behavlour of Infier~illo dam durir~ construction and filling of the reservoir. A linear stress-strain behaviour of materials has been assumed. The parameters are ded~Iced from the movements measured during construction, checked with the results of oedometer tests at the laboratc~y. Collapse of the t~stream shell is ~ntroduced into the calculation in a simple way from the settlement observed upon flooding ~ c o n s t a n t stress at the oedometer. A good agre~m~ent is found between meas%~ed and calculated movements.
834202 ~rmu-A'S OF FLUID RESISTANCE IN THE M I ~ WASTE D A M - ~ A E PROSU~ Je~almlan, J K Ixf@ J ~mn Anal Meth Geomech, V7, N1, JamMarch 1983, R~7-100
A one dimensional consolidation-sheer model based upon a broken-line relationship between shear modttlus and strain on a l o g - l ~ plot is proposed to explain the non-linear differential settlement behaviou~ observed durirg the construction of a building in BeiJing. 8 3 4 1 ~ TRIAL TRENCH CONSTRUCTION IN LONDON CIAY: A GROUND MOVEMENT STUDY AT BRACMNELL Chard, B M; Symons, I F Transport and Road Resesrch Laboratc~y relx~'t LR 1051, 1982, 14P A full scale field trial to determine the magnitude and distribution of groumd m ~ v e m ~ t s produced by deep trenchiDg was carried out in London Clay, at ~racknell, Be~kahlre, b~. The trench 5m deep, im wide and 25m long was constructed progressively in 5 bays of eqlml l e ~ to st~xly the influence of trench g e ~ on %he ground movement. Surface and s~su~f~ce movements and pare water pressure were monitored. The main cause of movement was found to be the excavation operation, and to a lesser extent backfillimg operations. Lateral movements wrote at all stages greater than vertical movements.
Liquefaction of mine tailings dams causes the tailimgs to flow over isrge distances. A l:rocedure for the flow analysis of these tailirgs is ;resented. This incorporates a laminar resistance term into the ~ a l l o w water theory. 83~203 DEVELOPMENT OF CENTRIFUGAL MCDELs TO STUDY THE INFLUENCE OF UPLIFT PRESSURES ON THE STABILITY OF A FLOOD BANK Padfield, C J; Schofield, A N Geotechnique, V33, N1, Msrch 1983, P57-66 Small-scalej two-dimensional models, representimg a clay flood embankment built on a clay foumdation layer overlying a pervious granular layer, were tested in a centrifuge. Results indicated that the uplift presst~es may modify the nature of the most critical failure mechanism, but do not a~pear %O &re~t!y affect s~fety factors against collapse. The study relates to fail~Tes of the Thames flood embankments.
8~.2~
COUPLED DYNAMIC BEHAVIOUR OF REALISTIC ARCH DAMS INCLUDING HYDRODYNAMIC AND F~HDATI@N
IkL'~z~ACTION Avail: TRRL, Crowthorne, B ~ k s , UK
!'.ath, B; Potamitis, S G Inst Civ Engr Proc, vv3, Sept 1982, P587-607