Constant-Volume Cyclic Testing to Determine Input Parameters for the GMP Pore Pressure Generation Model

2017 ◽  
Author(s):  
Carmine P. Polito
Keyword(s):  
Pore Pressure ◽  
Constant Volume ◽  
Generation Model ◽  
Cyclic Testing ◽  
Input Parameters

ANALYZING THE EFFECTS OF INPUT PARAMETERS ON WAVE COMPUTATIONS BASED ON THE THIRD GENERATION MODEL SWAN

2016 ◽  
Vol 72 (2) ◽  
pp. I_247-I_252
Author(s):  
Kunimitsu INOUCHI ◽  
Masataka YAMAGUCHI ◽  
Hirokazu NONAKA ◽  
Mikio HINO ◽  
Yoshio HATADA
Keyword(s):  
Generation Model ◽  
Third Generation ◽  
The Third ◽  
Input Parameters

Cyclic behaviour of plate anchors

1988 ◽  
Vol 25 (2) ◽  
pp. 374-381 ◽  
Author(s):  
D. A. Ponniah ◽  
T. W. Finlay
Keyword(s):  
Key Words ◽  
Pore Pressure ◽  
Cohesive Soil ◽  
Cyclic Loads ◽  
Cyclic Testing ◽  
Cyclic Behaviour ◽  
Pull Out ◽  
The Mean ◽  
Plate Anchors

This note describes a series of tests carried out on plate anchors embedded in a normally consolidated cohesive soil and subjected to long-term cyclic loads. The principle parameters in the cyclic testing were the mean load and the cyclic amplitude of load about the mean. The tests demonstrated that the anchors did not fail when load cycled up to 50 ± 20% of the drained ultimate pull-out capacity, with the anchor displacements being associated with the buildup and dissipation of pore pressure. With recycling, the level of loading without failure could be increased to 70 ± 20% of the drained capacity. Key words: anchors, cycling, clay.

A practice oriented pore-pressure generation model

2020 ◽  
pp. 47-54
Author(s):  
E.M. Dawson ◽  
W.H. Roth ◽  
S. Nesarajah ◽  
G. Bureau ◽  
C.A. Davis
Keyword(s):  
Pore Pressure ◽  
Generation Model

Effect of load shape on relationship between dissipated energy and residual excess pore pressure generation in cyclic triaxial tests

2013 ◽  
Vol 50 (11) ◽  
pp. 1118-1128 ◽  
Author(s):  
Carmine Polito ◽  
Russell A. Green ◽  
Erin Dillon ◽  
Changbum Sohn
Keyword(s):  
Pore Pressure ◽  
Water Pressure ◽  
Laboratory Data ◽  
Excess Pore Pressure ◽  
Triaxial Tests ◽  
Dissipated Energy ◽  
Generation Model ◽  
Cyclic Triaxial ◽  
Cyclic Triaxial Tests ◽  
Load Shape

The energy dissipated in soil during cyclic loading can be used to predict the change in the pore-water pressure developed in the soil. To examine whether the energy required to cause liquefaction is dependent on or independent of the load shape applied, a series of 28 cyclic triaxial tests were performed using five different load shapes having a range of cyclic stress ratios. The five load shapes were applied to identically prepared specimens of clean sand and the dissipated energy – pore pressure generation characteristics examined. It was found that that the dissipated energy to cause initial liquefaction was normally distributed and independent of the load shape, although it is seemingly somewhat dependent on duration of loading. A corollary to this finding is that laboratory data from specimens tested using sinusoidal loadings can be used to calibrate the Green, Mitchell, and Polito (GMP) energy-based pore pressure generation model for use in predicting in situ pore pressures in soils subjected to nonsinusoidal loadings (e.g., earthquake loadings). Given the relative simplicity of the GMP model, these findings make the model an attractive alternative to implement in effective stress dynamic response codes.

Fuzzy Sets Theory in Comparison with Stochastic Methods to Analyse Nonlinear Behaviour of a Steel Member under Compression

2005 ◽  
Vol 10 (1) ◽  
pp. 65-75 ◽  
Author(s):  
Z. Kala
Keyword(s):  
Fuzzy Sets ◽  
Carrying Capacity ◽  
Stochastic Methods ◽  
Nonlinear Behaviour ◽  
Load Carrying Capacity ◽  
Load Carrying ◽  
Input Parameters ◽  
Stochastic Solution ◽  
Fuzzy Solution ◽  
Sets Theory

The load-carrying capacity of the member with imperfections under axial compression is analysed in the present paper. The study is divided into two parts: (i) in the first one, the input parameters are considered to be random numbers (with distribution of probability functions obtained from experimental results and/or tolerance standard), while (ii) in the other one, the input parameters are considered to be fuzzy numbers (with membership functions). The load-carrying capacity was calculated by geometrical nonlinear solution of a beam by means of the finite element method. In the case (ii), the membership function was determined by applying the fuzzy sets, whereas in the case (i), the distribution probability function of load-carrying capacity was determined. For (i) stochastic solution, the numerical simulation Monte Carlo method was applied, whereas for (ii) fuzzy solution, the method of the so-called α cuts was applied. The design load-carrying capacity was determined according to the EC3 and EN1990 standards. The results of the fuzzy, stochastic and deterministic analyses are compared in the concluding part of the paper.

Action Generation Model Based on Changes in State Patterns

2009 ◽  
Vol 129 (9) ◽  
pp. 1690-1698
Author(s):  
Manabu Gouko ◽  
Naoki Tomi ◽  
Tomoaki Nagano ◽  
Koji Ito
Keyword(s):  
Generation Model ◽  
Model Based
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