| ATTRIBUTE | VALUE |
|---|
| type | A |
| database id | 8818 |
| title | The effect of the vertical acceleration on stability assessment of seismically loaded earth dams |
| authors | Korzec A. |
| pages | 101 — 120 |
| DOI | 10.1515/heem-2016-0007 |
| notes | Kopia w oprac. Tp4455 |
| full text link | http://www.ibwpan.gda.pl/storage/app/media/ahem/ahem63str101.pdf |
| keywords | slope stability analysis, dynamics, Newmark’s method, accelerogram |
| affiliations | - Institute of Hydro-Engineering, Polish Academy of Sciences, ul. Kościerska 7, 80-328 Gdańsk, Poland, e-mail: a.korzec@ibwpan.gda.pl
|
| abstracts | In the assessment of slope stability, the vertical component of acceleration is commonly neglected. However, signal analyses performed on a large number of acceleration time histories
have revealed that the vertical peak ground acceleration can be as high as the horizontal one.
In this paper, a method of slope stability analysis regarding the vertical component of acceleration is proposed. It considers a rigid body system affected by the acceleration time histories
in both horizontal and vertical directions. In a general case, the strength of the contact between
acceleration components is time dependent. Parametric analysis was performed on the basis of
cyclic harmonic loading, assuming a safety criterion in the form of permanent displacement.
The results, for both harmonic and real acceleration time histories, were compared with the
results of the commonly used Newmark’s sliding block approach, which revealed significant
differences in permanent displacements calculated by the two methods. |
| attributes | [reviewed] [scientific] |
| language | en |
| points | 14 |
| ATTRIBUTE | VALUE |
|---|
| type | A |
| database id | 8792 |
| title | Mechanical properties of sand: triaxial versus plane strain investigations |
| authors | Sawicki A., Sławińska J., Mierczyński J., Smyczyński M. |
| pages | 135 — 156 |
| DOI | 10.1515/heem-2016-0009 |
| notes | Kopia w oprac. Tp4450 |
| full text link | http://www.ibwpan.gda.pl/storage/app/media/ahem/ahem63str135.pdf |
| keywords | mechanical properties of granular soils, triaxial investigations, true triaxial apparatus, liquefaction |
| affiliations | - nstitute of Hydro-Engineering, Polish Academy of Sciences, Kościerska 7, 80-328 Gdańsk, Poland, e-mails: stynaju@ibwpan.gda.pl, mier@ibwpan.gda.pl, m.smyczynski@ibwpan.gda.pl
|
| tasks | Z 3.1.2/2016: Modyfikacja inżynierskiej wersji przyrostowego modelu gruntu dla płaskiego stanu odkształcenia |
| abstracts | The paper compares the pre-failure behavior of granular soils investigated in the classical triaxial apparatus and in the true triaxial apparatus, under plane strain conditions. Both experiments
are described within the framework of an incremental model of the pre-failure behavior of
sands. The methods of tensor algebra are used to compare theoretical predictions with experimental results. The analysis presented deals with the pre-failure deformations of fully drained
sand, as well as with its undrained behavior, including static liquefaction and the specific behavior of an initially dilative soil. Some key questions of soil mechanics are discussed, for instance,
whether soil parameters determined from one configuration, such as triaxial conditions, can
be applied in other cases. |
| attributes | [reviewed] [scientific] |
| language | en |
| points | 14 |
| ATTRIBUTE | VALUE |
|---|
| type | A |
| database id | 8583 |
| title | The pull-out capacity of suction caissons in model investigations |
| authors | Sawicki A., Wachowski Ł., Kulczykowski M. |
| pages | 157 — 172 |
| DOI | 10.1515/heem-2016-0010 |
| notes | Kopia w oprac. Tp4431, Tp4453 |
| full text link | http://www.ibwpan.gda.pl/storage/app/media/ahem/ahem63str157.pdf |
| keywords | suction caissons, pull-out resistance, model investigations |
| affiliations | - Institute of Hydro-Engineering, Polish Academy of Sciences, Kościerska 7, 80-328 Gdańsk, Poland, Corresponding author, e-mail: marekkulczykowski@ibwpan.gda.pl
|
| abstracts | A small-scale model experiment on the pull-out resistance of suction caissons is described.
The pull-out force and suction developed within the caisson in the extraction process were
recorded during the experiment. A simple breakout model, together with an elementary static
formulae, is applied to predict the results obtained experimentally. There is a reasonably good
agreement between the experimental results and predictions. An extensive discussion of the
approach applied is included. The analysis presented in this paper is original, as it differs from
other approaches mentioned in this paper, and leads to acceptable predictions. At the end, the
results are also compared with another approach for predicting the capacity of suction caissons. |
| attributes | [reviewed] [scientific] |
| language | en |
| points | 14 |
| ATTRIBUTE | VALUE |
|---|
| type | A |
| database id | 8810 |
| title | Rayleigh waves transformation in liquefying water-saturated sands |
| authors | Staroszczyk R. |
| pages | 173 — 190 |
| DOI | 10.1515/heem-2016-0011 |
| full text link | http://www.ibwpan.gda.pl/storage/app/media/ahem/ahem63str173.pdf |
| keywords | Rayleigh surface wave, water-saturated sand, excess pore pressure generation, soil liquefaction |
| affiliations | - Institute of Hydro-Engineering, Polish Academy of Sciences, Kościerska 7, 80-328 Gdańsk, Poland, e-mail: rstar@ibwpan.gda.pl
|
| abstracts | The behaviour of a water-saturated sand deposit subjected to dynamic loads induced by the
propagation of Rayleigh surface waves is analysed. Cyclic shearing of the saturated sand matrix
due to ground motions results in the development of excess pore pressures in the soil and its
subsequent liquefaction. The phenomena of pore pressure generation and soil liquefaction are
investigated within the framework of a compaction theory for saturated granular media. The
results of calculations, carried out by a finite-element method, illustrate the evolution of pore
pressures and the development of liquefaction zones in the soil, and show the variation of
surface wave parameters with the progressive degradation of the strength of the subsoil. |
| attributes | [reviewed] [scientific] |
| language | en |
| points | 14 |
| ATTRIBUTE | VALUE |
|---|
| type | A |
| database id | 8808 |
| title | Vibrations of a horizontal band elastic plate submerged in fluid of constant depth |
| authors | Szmidt K., Hedzielski B. |
| pages | 191 — 214 |
| DOI | 10.1515/heem-2016-0012 |
| notes | Kopia w oprac. Tp4448 |
| full text link | http://www.ibwpan.gda.pl/storage/app/media/ahem/ahem63str191.pdf |
| keywords | elastic plate, free vibrations, forced vibrations, eigenfrequencies, co-vibrating mass of fluid |
| affiliations | - Institute of Hydro-Engineering, Polish Academy of Sciences, ul. Kościerska 7, 80-328 Gdańsk, Poland, e-mail: jks@ibwpan.gda.pl
|
| abstracts | The paper deals with free and forced vibrations of a horizontal thin elastic plate submerged in
an infinite layer of fluid of constant depth. In free vibrations, the pressure load on the plate results from assumed displacements of the plate. In forced vibrations, the fluid pressure is mainly
induced by water waves arriving at the plate. In both cases, we have a coupled problem of hydrodynamics in which the plate and fluid motions are coupled through boundary conditions at
the plate surface. At the same time, the pressure load on the plate depends on the gap between
the plate and the fluid bottom. The motion of the plate is accompanied by the fluid motion.
This leads to the so-called co-vibrating mass of fluid, which strongly changes the eigenfrequencies of the plate. In formulation of this problem, a linear theory of small deflections of
the plate is employed. In order to calculate the fluid pressure, a solution of Laplace’s equation
is constructed in the doubly connected infinite fluid domain. To this end, this infinite domain
is divided into sub-domains of simple geometry, and the solution of the problem equation is
constructed separately for each of these domains. Numerical experiments are conducted to
illustrate the formulation developed in this paper. |
| attributes | [reviewed] [scientific] |
| language | en |
| points | 14 |
| ATTRIBUTE | VALUE |
|---|
| type | A |
| database id | 8822 |
| title | Modelling of post-flotation tailings liquefaction induced by paraseismic events |
| authors | Świdziński W. |
| pages | 215 — 232 |
| DOI | 10.1515/heem-2016-0013 |
| notes | Kopia w opracowaniu Tp4494 |
| full text link | http://www.ibwpan.gda.pl/storage/app/media/ahem/ahem63str215.pdf |
| keywords | post-flotation tailings, cyclic loading, liquefaction, modelling |
| affiliations | - Institute of Hydro-Engineering, Polish Academy of Sciences, Kościerska 7, 80-328 Gdańsk, Poland, e-mail: waldek@ibwpan.gda.pl
|
| abstracts | This paper presents and discusses the results of numerical modelling of pore water pressure
build-up in post-flotation saturated tailings deposited at the Tailings Storage Facility “Żelazny
Most”, caused by seismic-induced dynamic loading. Numerical simulations were based on the
compaction/liquefaction model proposed by A. Sawicki. The model parameters were determined in the laboratory for tailings sampled at the TSF “Żelazny Most”. The sensitivity of the
numerical model was verified in a series of numerical tests for various horizontal acceleration
amplitudes. In the main calculations, an accelerogram recorded during a real paraseimic event
was assumed. The results obtained show that, with the current seismic activity near the TSF
“Żelazny Most”, some pore water pressure is generated within the saturated tailings layer, but
it does not trigger the liquefaction phenomenon. |
| attributes | [reviewed] [scientific] |
| language | en |
| points | 14 |
| ATTRIBUTE | VALUE |
|---|
| type | A |
| database id | 8781 |
| title | Influence of cracks on the lifetime of semi-rigid pavements |
| authors | Kazimierowicz-Frankowska K. |
| pages | 83 — 100 |
| DOI | 10.1515/heem-2016-0006 |
| full text link | http://www.ibwpan.gda.pl/storage/app/media/ahem/ahem63str083.pdf |
| keywords | pavement deformations, traffic load, reflective cracks, ground compaction |
| affiliations | - Institute of Hydro-Engineering, Polish Academy of Sciences, ul. Kościerska 7, 80-328 Gdańsk, Poland, e-mail: krystyna@ibwpan.gda.pl
|
| abstracts | This paper focuses on a better understanding of the process of reflective cracking propagation
through the pavement structure. A series of finite element numerical simulations were conducted to investigate the initial stress and strain states in typical semi-rigid pavements with
and without reflective cracks under traffic loading. It was assumed that reflective-cracks propagate from the base layer to the pavement surface. The influence of selected parameters, such
as the load position, overlay thickness, and subgrade quality on stress and strain concentrations
was investigated. The behaviour of the pavement structure under repeated traffic loading was
analyzed in terms of ground compaction. The original theoretical model proposed by Prof. Andrzej Sawicki was used to predict the deformation of a pavement subgrade subjected to traffic
loading. The damaging effect of cracks appearing in the pavement structure was investigated.
It was found that even a single crack in the pavement structure may significantly reduce the
pavement lifetime. |
| attributes | [reviewed] [scientific] |
| language | en |
| points | 14 |
| ATTRIBUTE | VALUE |
|---|
| type | A |
| database id | 8630 |
| title | Simplified probabilistic analysis of settlement of cyclically loaded soil stratum using point estimate method |
| authors | Przewłócki J., Górski J., Świdziński W. |
| pages | 121 — 134 |
| DOI | 10.1515/heem-2016-0008 |
| notes | Kopia w opracowaniu Tp4494 |
| full text link | http://www.ibwpan.gda.pl/storage/app/media/ahem/ahem63str121.pdf |
| keywords | soil settlement, seismic loading, random material parameters, point estimate method |
| affiliations | - Prof. D. Sc., Faculty of Architecture, Gdańsk University of Technology, Narutowicza 11/12, 80-233 Gdańsk, Poland, jprzew@pg.gda.pl
- Ph. D, D. Sc., Faculty of Civil and Environmental Engineering, Gdańsk University of Technology, Narutowicza 11/12, 80-233 Gdańsk, Poland, jgorski@pg.gda.pl
- Ph. D, D. Sc., Institute of Hydro-Engineering, Polish Academy of Sciences, Kościerska 7, 80-328 Gdańsk, Poland, waldek@ibwpan.gda.pl
|
| abstracts | The paper deals with the probabilistic analysis of the settlement of a non-cohesive soil layer
subjected to cyclic loading. Originally, the settlement assessment is based on a deterministic
compaction model, which requires integration of a set of differential equations. However, with
the use of the Bessel functions, the settlement of a soil stratum can be calculated by a simplified algorithm. The compaction model parameters were determined for soil samples taken
from subsoil near the Izmit Bay, Turkey. The computations were performed for various sets of
random variables. The point estimate method was applied, and the results were verified by the
Monte Carlo method. The outcome leads to a conclusion that can be useful in the prediction
of soil settlement under seismic loading. |
| attributes | [reviewed] [scientific] |
| language | en |
| points | 14 |