Marek Wyjadłowski - Academia.edu (original) (raw)
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Papers by Marek Wyjadłowski
Studia Geotechnica et Mechanica
The paper concerns the wide range of strategies used to protect structures against man-made dynam... more The paper concerns the wide range of strategies used to protect structures against man-made dynamic excitation. The most popular approaches applied worldwide are compared, and the main differences and similarities are summarized. The literature studies are supported by the results of the measurements performed on different types of real structures, which are sensitive and insensitive to the dynamic load. To make the conclusions more general, various types of excitation forces are examined (long-term and short-term excitations, traffic load, and loads resulting from geotechnical works). The main issue raised in the paper is the problem of unequivocal and accurate assessment of the potential structure damage, based on the different legislations. It can be seen that the application of different codes can even result in opposite conclusions about the safety of the structure.
Journal of Physics: Conference Series, 2019
The proper quality and the safe execution of geotechnical works imposes the necessity of monitori... more The proper quality and the safe execution of geotechnical works imposes the necessity of monitoring techniques to prevent the threats arising from the vibrations. This work presents authors experience gained during sheet piling and Franki pile driving in time of construction of water power plant. Dynamic impact of foundation works can be perceptible by humans and can affect structures and technical devices. The immediate reason for the dynamic analysis was the occurrence of clearly perceivable vibration of the weir. The measurements were performed during sheet wall installation and Franki pile driving at various measuring points. Wave parameter measurements and recording of shocks and vibrations in the close vicinity of the construction site were juxtaposed for different installation phases and measuring points. A comparison of the two technologies shows that the largest vibrations occur during formation of the cast-in-situ (over)expanded Franki pile base. Sheet pile wall installation supported by additional processes such as pre-boring turned out to be as less harmful.
Studia Geotechnica et Mechanica, Jun 27, 2023
The paper concerns the wide range of strategies used to protect structures against man-made dynam... more The paper concerns the wide range of strategies used to protect structures against man-made dynamic excitation. The most popular approaches applied worldwide are compared, and the main differences and similarities are summarized. The literature studies are supported by the results of the measurements performed on different types of real structures, which are sensitive and insensitive to the dynamic load. To make the conclusions more general, various types of excitation forces are examined (long-term and shortterm excitations, traffic load, and loads resulting from geotechnical works). The main issue raised in the paper is the problem of unequivocal and accurate assessment of the potential structure damage, based on the different legislations. It can be seen that the application of different codes can even result in opposite conclusions about the safety of the structure.
Journal of physics, Dec 1, 2019
The proper quality and the safe execution of geotechnical works imposes the necessity of monitori... more The proper quality and the safe execution of geotechnical works imposes the necessity of monitoring techniques to prevent the threats arising from the vibrations. This work presents authors experience gained during sheet piling and Franki pile driving in time of construction of water power plant. Dynamic impact of foundation works can be perceptible by humans and can affect structures and technical devices. The immediate reason for the dynamic analysis was the occurrence of clearly perceivable vibration of the weir. The measurements were performed during sheet wall installation and Franki pile driving at various measuring points. Wave parameter measurements and recording of shocks and vibrations in the close vicinity of the construction site were juxtaposed for different installation phases and measuring points. A comparison of the two technologies shows that the largest vibrations occur during formation of the cast-in-situ (over)expanded Franki pile base. Sheet pile wall installation supported by additional processes such as pre-boring turned out to be as less harmful.
Roczniki Inżynierii Budowlanej, 2007
Górnictwo i Geoinżynieria, 2011
Archives of Civil and Mechanical Engineering, 2019
The paper deals with reliability analysis of cantilever sheet pile wall located in non-cohesive s... more The paper deals with reliability analysis of cantilever sheet pile wall located in non-cohesive soil with random properties. Spatial variability of friction angle has been described using random fields theory. The influence of both vertical as well as horizontal scale of fluctuation on the mechanical response of sheet pile wall is investigated. Deflection of wall top as well as maximum bending moment in the sheet pile wall are tested. The point distribution of soil friction and its vertical fluctuation scale is estimated using quasi-continuous results of cone penetrometer tests (CPTu). The boundary value problem is solved using finite difference code FLAC. The Fourier series method (FSM) allowing for non-uniform meshes is used to generate random fields for individual realizations. By utilizing Monte Carlo Simulation (MCS) technique the probability distributions of the results for different values of vertical and horizontal scales of fluctuation are obtained and used for reliability analysis. The results of analysis show that in case of cantilever sheet pile wall it is very important to properly estimate value of vertical fluctuation scale for the reliability analysis. It is also illustrated that in the considered problem horizontal scale of fluctuation significantly influences probability of failure.
IOP Conference Series: Materials Science and Engineering, 2021
Diaphragm walls are deep extended walls through granular or cohesive soils in shallow water table... more Diaphragm walls are deep extended walls through granular or cohesive soils in shallow water table areas. This paper focus problems involved in excavating diaphragm walls including dynamic impact on the environment. Construction of diaphragm wall involves extracting a soil trench while simultaneously keeping heavy viscous slurry (bentonite) filling the excavation to provide lateral pressure that must be at least equal or greater than lateral soil pressure. Extraction of soil with machinery causes vibrations to be transmitted to the adjacent buildings. The research presented in the paper is also to assess the effectiveness of the concrete diaphragm wall in damping vibrations transmitted to the surrounding buildings. The first execution phase of the technology when a vertical finite-length trench element is excavated under a hydrostatic support from inside of a bentonite slurry is under consideration.
MATERIAŁY BUDOWLANE, 2015
Materials
This research investigates the influence of the scale effect on the bearing capacity of fine-grai... more This research investigates the influence of the scale effect on the bearing capacity of fine-grained subsoil under undrained conditions. The analyses were conducted based on laboratory tests of silty clay. Uniformly compacted samples were subjected to an unconfined compression test. The research was performed on cylindrical specimens. Three different variants of the diameter D (38 mm, 70 mm, 100 mm) and the corresponding height H = 2D were analyzed. Based on the tests results, the unconfined compression strength qu was determined, and from this, the undrained shear strength cu was calculated. The obtained results showed a clear decrease in cu with increasing sample size. However, in the existing reference documents, there are no specific guidelines for calculations of bearing capacity with consideration of sample size effect on the soil shear strength. Therefore, this study utilized the laboratory soil test data to calculate the bearing capacity of undrained subsoil, taking into acc...
16th International Multidisciplinary Scientific GeoConference SGEM2016, Science and Technologies in Geology, Exploration and Mining, Jun 28, 2016
IOP Conference Series: Earth and Environmental Science, 2017
The aim of this article is to present 3D numerical calculations results of the seepage resistance... more The aim of this article is to present 3D numerical calculations results of the seepage resistance of sheet pile (SP) wall with sealed joints. In the present work the leakage through SP wall was determined for one joint of full length. In the analysed example, the SP wall passed through one kind of soil but some conditions (permeability of joint and of surrounding soil) changed depending on the adopted assumptions. To find the distribution of the total head in the calculation area Laplace equation was used. To determine the velocity field Darcy's law was adopted. In the first step, the discharge flowing through the single joint of SP wall based on 3D numerical simulations was determined. In the next step, the joint resistance was estimated and the discharge was found analytically. The results obtained using these two methods were compared. And the conclusions are as follows: it seems possible to estimate the "joint permeability" coefficient using numerical methods, in some conditions the analytical results are far away from numerical ones, due to the nonlinear pressure distribution along the joint, it is necessary to collect in-situ data to confirm the usefulness and reliability of obtained solutions and to proposed more complete methods of determination of SP wall seepage resistance.
Studia Geotechnica et Mechanica
The paper concerns the wide range of strategies used to protect structures against man-made dynam... more The paper concerns the wide range of strategies used to protect structures against man-made dynamic excitation. The most popular approaches applied worldwide are compared, and the main differences and similarities are summarized. The literature studies are supported by the results of the measurements performed on different types of real structures, which are sensitive and insensitive to the dynamic load. To make the conclusions more general, various types of excitation forces are examined (long-term and short-term excitations, traffic load, and loads resulting from geotechnical works). The main issue raised in the paper is the problem of unequivocal and accurate assessment of the potential structure damage, based on the different legislations. It can be seen that the application of different codes can even result in opposite conclusions about the safety of the structure.
Journal of Physics: Conference Series, 2019
The proper quality and the safe execution of geotechnical works imposes the necessity of monitori... more The proper quality and the safe execution of geotechnical works imposes the necessity of monitoring techniques to prevent the threats arising from the vibrations. This work presents authors experience gained during sheet piling and Franki pile driving in time of construction of water power plant. Dynamic impact of foundation works can be perceptible by humans and can affect structures and technical devices. The immediate reason for the dynamic analysis was the occurrence of clearly perceivable vibration of the weir. The measurements were performed during sheet wall installation and Franki pile driving at various measuring points. Wave parameter measurements and recording of shocks and vibrations in the close vicinity of the construction site were juxtaposed for different installation phases and measuring points. A comparison of the two technologies shows that the largest vibrations occur during formation of the cast-in-situ (over)expanded Franki pile base. Sheet pile wall installation supported by additional processes such as pre-boring turned out to be as less harmful.
Studia Geotechnica et Mechanica, Jun 27, 2023
The paper concerns the wide range of strategies used to protect structures against man-made dynam... more The paper concerns the wide range of strategies used to protect structures against man-made dynamic excitation. The most popular approaches applied worldwide are compared, and the main differences and similarities are summarized. The literature studies are supported by the results of the measurements performed on different types of real structures, which are sensitive and insensitive to the dynamic load. To make the conclusions more general, various types of excitation forces are examined (long-term and shortterm excitations, traffic load, and loads resulting from geotechnical works). The main issue raised in the paper is the problem of unequivocal and accurate assessment of the potential structure damage, based on the different legislations. It can be seen that the application of different codes can even result in opposite conclusions about the safety of the structure.
Journal of physics, Dec 1, 2019
The proper quality and the safe execution of geotechnical works imposes the necessity of monitori... more The proper quality and the safe execution of geotechnical works imposes the necessity of monitoring techniques to prevent the threats arising from the vibrations. This work presents authors experience gained during sheet piling and Franki pile driving in time of construction of water power plant. Dynamic impact of foundation works can be perceptible by humans and can affect structures and technical devices. The immediate reason for the dynamic analysis was the occurrence of clearly perceivable vibration of the weir. The measurements were performed during sheet wall installation and Franki pile driving at various measuring points. Wave parameter measurements and recording of shocks and vibrations in the close vicinity of the construction site were juxtaposed for different installation phases and measuring points. A comparison of the two technologies shows that the largest vibrations occur during formation of the cast-in-situ (over)expanded Franki pile base. Sheet pile wall installation supported by additional processes such as pre-boring turned out to be as less harmful.
Roczniki Inżynierii Budowlanej, 2007
Górnictwo i Geoinżynieria, 2011
Archives of Civil and Mechanical Engineering, 2019
The paper deals with reliability analysis of cantilever sheet pile wall located in non-cohesive s... more The paper deals with reliability analysis of cantilever sheet pile wall located in non-cohesive soil with random properties. Spatial variability of friction angle has been described using random fields theory. The influence of both vertical as well as horizontal scale of fluctuation on the mechanical response of sheet pile wall is investigated. Deflection of wall top as well as maximum bending moment in the sheet pile wall are tested. The point distribution of soil friction and its vertical fluctuation scale is estimated using quasi-continuous results of cone penetrometer tests (CPTu). The boundary value problem is solved using finite difference code FLAC. The Fourier series method (FSM) allowing for non-uniform meshes is used to generate random fields for individual realizations. By utilizing Monte Carlo Simulation (MCS) technique the probability distributions of the results for different values of vertical and horizontal scales of fluctuation are obtained and used for reliability analysis. The results of analysis show that in case of cantilever sheet pile wall it is very important to properly estimate value of vertical fluctuation scale for the reliability analysis. It is also illustrated that in the considered problem horizontal scale of fluctuation significantly influences probability of failure.
IOP Conference Series: Materials Science and Engineering, 2021
Diaphragm walls are deep extended walls through granular or cohesive soils in shallow water table... more Diaphragm walls are deep extended walls through granular or cohesive soils in shallow water table areas. This paper focus problems involved in excavating diaphragm walls including dynamic impact on the environment. Construction of diaphragm wall involves extracting a soil trench while simultaneously keeping heavy viscous slurry (bentonite) filling the excavation to provide lateral pressure that must be at least equal or greater than lateral soil pressure. Extraction of soil with machinery causes vibrations to be transmitted to the adjacent buildings. The research presented in the paper is also to assess the effectiveness of the concrete diaphragm wall in damping vibrations transmitted to the surrounding buildings. The first execution phase of the technology when a vertical finite-length trench element is excavated under a hydrostatic support from inside of a bentonite slurry is under consideration.
MATERIAŁY BUDOWLANE, 2015
Materials
This research investigates the influence of the scale effect on the bearing capacity of fine-grai... more This research investigates the influence of the scale effect on the bearing capacity of fine-grained subsoil under undrained conditions. The analyses were conducted based on laboratory tests of silty clay. Uniformly compacted samples were subjected to an unconfined compression test. The research was performed on cylindrical specimens. Three different variants of the diameter D (38 mm, 70 mm, 100 mm) and the corresponding height H = 2D were analyzed. Based on the tests results, the unconfined compression strength qu was determined, and from this, the undrained shear strength cu was calculated. The obtained results showed a clear decrease in cu with increasing sample size. However, in the existing reference documents, there are no specific guidelines for calculations of bearing capacity with consideration of sample size effect on the soil shear strength. Therefore, this study utilized the laboratory soil test data to calculate the bearing capacity of undrained subsoil, taking into acc...
16th International Multidisciplinary Scientific GeoConference SGEM2016, Science and Technologies in Geology, Exploration and Mining, Jun 28, 2016
IOP Conference Series: Earth and Environmental Science, 2017
The aim of this article is to present 3D numerical calculations results of the seepage resistance... more The aim of this article is to present 3D numerical calculations results of the seepage resistance of sheet pile (SP) wall with sealed joints. In the present work the leakage through SP wall was determined for one joint of full length. In the analysed example, the SP wall passed through one kind of soil but some conditions (permeability of joint and of surrounding soil) changed depending on the adopted assumptions. To find the distribution of the total head in the calculation area Laplace equation was used. To determine the velocity field Darcy's law was adopted. In the first step, the discharge flowing through the single joint of SP wall based on 3D numerical simulations was determined. In the next step, the joint resistance was estimated and the discharge was found analytically. The results obtained using these two methods were compared. And the conclusions are as follows: it seems possible to estimate the "joint permeability" coefficient using numerical methods, in some conditions the analytical results are far away from numerical ones, due to the nonlinear pressure distribution along the joint, it is necessary to collect in-situ data to confirm the usefulness and reliability of obtained solutions and to proposed more complete methods of determination of SP wall seepage resistance.