- Email: [email protected]
Pore pressure development during cyclic loading. Technical note
107A
83~077 PROBABILISTIC PORE PRESSURE ANALYSIS FCR SEISMIC LOADING Ch~meau, J L; Clou~h, G W J Geotech Emgmg Div ASCE, Vl09, NGT~, April
Isotropic consolidation tests were carried out on 6 dlffererfc types of marine soil samples. The samples were s~Jected to a heating ar~ cooling cycle of 25 deg C at constant confining stress in both n c ~ y consolidated a~i ovmrconsolidated stress ranges. Results indicate that the permanent red~ction in void ratio due to the temperat~e cycle is ir~epenlent of the effective confining stress for a normally consolidated soil, but is directly related to soil plasticity. For overconsolidated soil, the effect of temperat~e cycli~ on volmme char4~e behaviour is shown to be a furction of the magnitude of effective stress decrement mr overconsolidation ratio.
1983, ~o7-~2~ Two probabilistic models are proposed to study the development of pare press%~e in saturated sands under raDdom loadillg. The first of these is based on labmratc~y data, while the seco~i uses an analyt~cally based effective stress technique. The two models are incmrp~rated into a methodology which evaluates the probability of developing a certain level of pure pressure over a given time frame unler a specified l ~ b ability of seismic loading.
8~o83 ~
A L STUDY OF THE DYNAMIC EEHAVIOUR OF A MARINE CLAY UNDER CYCLIC LOADING (IN FRENCH) Pecker, A; Dupas, J M Rev Fr Geotech, NI~, May 1981, P5~73
83~078 CENI~IFUGAL MODELING OF SOIL LIQUEFACTION SUSCEPTIBILITY A r u l a r ~ n , K; AnardaraJah, A; Abghari, A J Geotech E n g ~ Div ASCE, VI09, ~TS, March 1983, P281-300
The dynamic behaviour of a marine clay from Blayais, France, was studied urder cyclic unlaxial loadiDg. The loads were applied with dynamic triaxial a~d resor~nt colman tests which subjected the sample to different strain amplitudes and stress paths. The behaviour is described with a non-linear hysteretic model, modified to account for material degradation occurring u r ~ repeated cyclic loadi~gs. It is shown that the degradation is less severe than that meas~ed directly in the tests and is due to an increase in pore pressure.
Seven dynamic centrifuge model tests were carried out on 2 sand models in order to st~ly the liquefaction behaviour of sand layers subjected to horizontal, cyclic base excitations. The generation and dissipetion of excess pare pressures were studied using the GADFLEA computer program, in c~der to estimate the threshold peak grourd surface acceleration. The study showed the significance of the initial primr strain hlstc~y on pore pressure development.
8 ~ 83~079 EVALUATION OF LIQUEFACTION POTENTIAL USING FIELD ISERF0~ANCE DATA Seed, H B; Idriss, I M; Arar~o, I J Geotech E~gng Div ASCE, V109, N ~ , March
L I Q ~ A ~ I O N OF miLS ~ ~ ~ I o N ~s (IN ~ ) Comte, J F Bull Liaison Lab Ponts Chaussees, N122, NOv-Dec 1982, Pi03-i13
The evolution of a procedure for evaluating liquefaction potential of sasi deposits using standard penetration test data is reviewed. Data from sites where sand has and has not liquefied during earthquakes are used to establish a criterion for evaluating liquefaction potential. A method is presented to determine the possible magnitude of pare ~ t e r pressure generation during earthquake shaking. 38 refs.
Correlations have been sought between the liquefaction risk of soils during earth treEK~-s and staniard pe~t~atlon test results. Comparison of results from labc~atcry cyclic loading tests and sta~ard penetration test results have shown the influence of particle size. It is l~oposed, on the basis of standard penetration test results, to adopt a criterion of evaluation of the liquefaction risk of soils deperding on the magnitude of the earth tremor. The predictions are compared with the behaviour of well documented sites.
1£83, ~ 8 - ~ 2
83£080 PORE PRESSURE DEVELOPMENT DURING CYCLIC LOADING.
~m~cAL
NOTE
Chang, C S; Kuo, C L; Selig, E T J Geotech Emgmg Div ASCE, Vl09, NGT1, Jan 1983, P103-i07 Proposes a method to predict pare pressure buildup in a soil element over a range of consolidation stress ratio values. The proposed equation is suitable or_ly for triaxial test results. 83~081 GRAVITY WAVES O V ~ A PERMEABLE BED Puri, K K Int J Er~ng Sci, V21, NS, 1983, P527-53~ The atten~atloD of waves on the free surface of a viscous fluid bounded by a Ix~ous bed of finite depth is studied. When related to c~fsh~e sea beds, it Is concluded from this investigation that bed permeability plays an I ~ role in the decay of a disturbance in coastal re,iotas cr where soll is coarser (permeability is h~h). 83~082 SOIL VOLUME CHANGES INDUCED BY TEMPERATURE CYCLING. TECHNICAL NOTE Demars, K R; Chsrles, R D Can Geotech J, V19, N2, May 1982, P188-19~
8~o85
LABCRATORY TESTS OF THE ~ C T
OF DYNAMIC LOAD~RG
oN TNE VALUE OF THE ~NETIC ~ Y coAL aea~2s (IN POLI~)
OF F~rumz OF
Musiol, S; Eaezmarczyk, A Przegl Gcrn, V38, NIl-12, Nov-Dec 1982 , F211-216 The results of laberatcry determir~tions of the effect of d ~ c loading on the kiretic energy of failure of coal samples are preserf@ed. They show that the kinetic energy of fail~re il~Ireases with Increasing load until a llmitir~ value is reached. This limlti~g value can be calculated using a relationship derived in the paper.
Classification and identification 83~0~6 CLASSYFICATION OF CHALKS A~D CONDITIONS OF REUTILIZATION AS FILL MATERIAL Rat, M; SchSeffner, M B%tll Lialsc~ Lab Ponts Chaussees, N123, Jam-Feb
1983, ~5-74 Proposes a new classification of chalks, deper~ent on only two perameters: dry density and water co:tent in situ. COnditions of re-ntilisation of chalk are specified, ard it is shown that compaction of chalk is very difficult.
83~077 PROBABILISTIC PORE PRESSURE ANALYSIS FCR SEISMIC LOADING Ch~meau, J L; Clou~h, G W J Geotech Emgmg Div ASCE, Vl09, NGT~, April
Isotropic consolidation tests were carried out on 6 dlffererfc types of marine soil samples. The samples were s~Jected to a heating ar~ cooling cycle of 25 deg C at constant confining stress in both n c ~ y consolidated a~i ovmrconsolidated stress ranges. Results indicate that the permanent red~ction in void ratio due to the temperat~e cycle is ir~epenlent of the effective confining stress for a normally consolidated soil, but is directly related to soil plasticity. For overconsolidated soil, the effect of temperat~e cycli~ on volmme char4~e behaviour is shown to be a furction of the magnitude of effective stress decrement mr overconsolidation ratio.
1983, ~o7-~2~ Two probabilistic models are proposed to study the development of pare press%~e in saturated sands under raDdom loadillg. The first of these is based on labmratc~y data, while the seco~i uses an analyt~cally based effective stress technique. The two models are incmrp~rated into a methodology which evaluates the probability of developing a certain level of pure pressure over a given time frame unler a specified l ~ b ability of seismic loading.
8~o83 ~
A L STUDY OF THE DYNAMIC EEHAVIOUR OF A MARINE CLAY UNDER CYCLIC LOADING (IN FRENCH) Pecker, A; Dupas, J M Rev Fr Geotech, NI~, May 1981, P5~73
83~078 CENI~IFUGAL MODELING OF SOIL LIQUEFACTION SUSCEPTIBILITY A r u l a r ~ n , K; AnardaraJah, A; Abghari, A J Geotech E n g ~ Div ASCE, VI09, ~TS, March 1983, P281-300
The dynamic behaviour of a marine clay from Blayais, France, was studied urder cyclic unlaxial loadiDg. The loads were applied with dynamic triaxial a~d resor~nt colman tests which subjected the sample to different strain amplitudes and stress paths. The behaviour is described with a non-linear hysteretic model, modified to account for material degradation occurring u r ~ repeated cyclic loadi~gs. It is shown that the degradation is less severe than that meas~ed directly in the tests and is due to an increase in pore pressure.
Seven dynamic centrifuge model tests were carried out on 2 sand models in order to st~ly the liquefaction behaviour of sand layers subjected to horizontal, cyclic base excitations. The generation and dissipetion of excess pare pressures were studied using the GADFLEA computer program, in c~der to estimate the threshold peak grourd surface acceleration. The study showed the significance of the initial primr strain hlstc~y on pore pressure development.
8 ~ 83~079 EVALUATION OF LIQUEFACTION POTENTIAL USING FIELD ISERF0~ANCE DATA Seed, H B; Idriss, I M; Arar~o, I J Geotech E~gng Div ASCE, V109, N ~ , March
L I Q ~ A ~ I O N OF miLS ~ ~ ~ I o N ~s (IN ~ ) Comte, J F Bull Liaison Lab Ponts Chaussees, N122, NOv-Dec 1982, Pi03-i13
The evolution of a procedure for evaluating liquefaction potential of sasi deposits using standard penetration test data is reviewed. Data from sites where sand has and has not liquefied during earthquakes are used to establish a criterion for evaluating liquefaction potential. A method is presented to determine the possible magnitude of pare ~ t e r pressure generation during earthquake shaking. 38 refs.
Correlations have been sought between the liquefaction risk of soils during earth treEK~-s and staniard pe~t~atlon test results. Comparison of results from labc~atcry cyclic loading tests and sta~ard penetration test results have shown the influence of particle size. It is l~oposed, on the basis of standard penetration test results, to adopt a criterion of evaluation of the liquefaction risk of soils deperding on the magnitude of the earth tremor. The predictions are compared with the behaviour of well documented sites.
1£83, ~ 8 - ~ 2
83£080 PORE PRESSURE DEVELOPMENT DURING CYCLIC LOADING.
~m~cAL
NOTE
Chang, C S; Kuo, C L; Selig, E T J Geotech Emgmg Div ASCE, Vl09, NGT1, Jan 1983, P103-i07 Proposes a method to predict pare pressure buildup in a soil element over a range of consolidation stress ratio values. The proposed equation is suitable or_ly for triaxial test results. 83~081 GRAVITY WAVES O V ~ A PERMEABLE BED Puri, K K Int J Er~ng Sci, V21, NS, 1983, P527-53~ The atten~atloD of waves on the free surface of a viscous fluid bounded by a Ix~ous bed of finite depth is studied. When related to c~fsh~e sea beds, it Is concluded from this investigation that bed permeability plays an I ~ role in the decay of a disturbance in coastal re,iotas cr where soll is coarser (permeability is h~h). 83~082 SOIL VOLUME CHANGES INDUCED BY TEMPERATURE CYCLING. TECHNICAL NOTE Demars, K R; Chsrles, R D Can Geotech J, V19, N2, May 1982, P188-19~
8~o85
LABCRATORY TESTS OF THE ~ C T
OF DYNAMIC LOAD~RG
oN TNE VALUE OF THE ~NETIC ~ Y coAL aea~2s (IN POLI~)
OF F~rumz OF
Musiol, S; Eaezmarczyk, A Przegl Gcrn, V38, NIl-12, Nov-Dec 1982 , F211-216 The results of laberatcry determir~tions of the effect of d ~ c loading on the kiretic energy of failure of coal samples are preserf@ed. They show that the kinetic energy of fail~re il~Ireases with Increasing load until a llmitir~ value is reached. This limlti~g value can be calculated using a relationship derived in the paper.
Classification and identification 83~0~6 CLASSYFICATION OF CHALKS A~D CONDITIONS OF REUTILIZATION AS FILL MATERIAL Rat, M; SchSeffner, M B%tll Lialsc~ Lab Ponts Chaussees, N123, Jam-Feb
1983, ~5-74 Proposes a new classification of chalks, deper~ent on only two perameters: dry density and water co:tent in situ. COnditions of re-ntilisation of chalk are specified, ard it is shown that compaction of chalk is very difficult.