TY  - JOUR
AU  - Marjanović, Miloš
AU  - Vukićević, Mirjana
AU  - König, Diethard
PY  - 2021
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/2929
AB  - Konstrukcije vetroturbina, mostova, industrijskih dimnjaka, potpornih zidova i sl. mogu biti izložene značajnim horizontalnim opterećenjima iz različitih izvora. Ove konstrukcije su često fundirane na grupama šipova. Efekti interakcije šipova u grupi pri horizontalnim opterećenjima su bili predmet istraživanja u poslednjim decenijama, pri čemu je najčešće razmatran slučaj horizontalnog opterećenja u dva ortogonalna pravca (paralelno ivicama grupe šipova). Usled stohastičke prirode, horizontalno opterećenje na grupu šipova može biti proizvoljnog pravca, i broj istraživanja koji razmatra ovaj slučaj opterećenja je relativno mali. U ovom radu prikazani su rezultati istraživanja uticaja horizontalnog opterećenja proizvoljnog pravca na odgovor grupe šipova, u cilju poboljšanja trenutnog koncepta projektovanja ovakvih temelja. Razmatrani su bušeni šipovi fundirani u peskovitom tlu, kroz opsežnu numeričku analizu. Identifikovane su "kritične" pozicije šipova unutar standardnih konfiguracija, diskutovan je uticaj različitih uslova u tlu i date su preporuke za projektovanje ovakvih tipova temeljnih konstrukcija.
T2  - Građevinski Kalendar
T1  - Faktori interakcije šipova u grupi pod dejstvom horizontalnog opterećenja proizvoljnog pravca
VL  - 53
UR  - https://hdl.handle.net/21.15107/rcub_grafar_2929
ER  - 

@article{
author = "Marjanović, Miloš and Vukićević, Mirjana and König, Diethard",
year = "2021",
abstract = "Konstrukcije vetroturbina, mostova, industrijskih dimnjaka, potpornih zidova i sl. mogu biti izložene značajnim horizontalnim opterećenjima iz različitih izvora. Ove konstrukcije su često fundirane na grupama šipova. Efekti interakcije šipova u grupi pri horizontalnim opterećenjima su bili predmet istraživanja u poslednjim decenijama, pri čemu je najčešće razmatran slučaj horizontalnog opterećenja u dva ortogonalna pravca (paralelno ivicama grupe šipova). Usled stohastičke prirode, horizontalno opterećenje na grupu šipova može biti proizvoljnog pravca, i broj istraživanja koji razmatra ovaj slučaj opterećenja je relativno mali. U ovom radu prikazani su rezultati istraživanja uticaja horizontalnog opterećenja proizvoljnog pravca na odgovor grupe šipova, u cilju poboljšanja trenutnog koncepta projektovanja ovakvih temelja. Razmatrani su bušeni šipovi fundirani u peskovitom tlu, kroz opsežnu numeričku analizu. Identifikovane su "kritične" pozicije šipova unutar standardnih konfiguracija, diskutovan je uticaj različitih uslova u tlu i date su preporuke za projektovanje ovakvih tipova temeljnih konstrukcija.",
journal = "Građevinski Kalendar",
title = "Faktori interakcije šipova u grupi pod dejstvom horizontalnog opterećenja proizvoljnog pravca",
volume = "53",
url = "https://hdl.handle.net/21.15107/rcub_grafar_2929"
}

Marjanović, M., Vukićević, M.,& König, D.. (2021). Faktori interakcije šipova u grupi pod dejstvom horizontalnog opterećenja proizvoljnog pravca. in Građevinski Kalendar, 53.
https://hdl.handle.net/21.15107/rcub_grafar_2929

Marjanović M, Vukićević M, König D. Faktori interakcije šipova u grupi pod dejstvom horizontalnog opterećenja proizvoljnog pravca. in Građevinski Kalendar. 2021;53.
https://hdl.handle.net/21.15107/rcub_grafar_2929 .

Marjanović, Miloš, Vukićević, Mirjana, König, Diethard, "Faktori interakcije šipova u grupi pod dejstvom horizontalnog opterećenja proizvoljnog pravca" in Građevinski Kalendar, 53 (2021),
https://hdl.handle.net/21.15107/rcub_grafar_2929 .

TY  - JOUR
AU  - Marjanović, Miloš
AU  - Vukićević, Mirjana
AU  - König, Diethard
PY  - 2020
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/2089
AB  - Marine and harbor structures, wind turbines, bridges, offshore platforms, industrial
chimneys, retaining structures etc. can be subjected to significant lateral loads from various sources. Appropriate assessment of the foundations capacity of these structures is thus necessary, especially when these structures are supported by pile groups. The pile group interaction effects under lateral loading have been investigated intensively in past decades, and the most of the conducted studies have considered lateral loading that acts along one of the two orthogonal directions, parallel to the edge of pile group. However, because of the stochastic nature of its source, the horizontal loading on the pile group may have arbitrary direction. The number of studies dealing with the pile groups under arbitrary loading is very limited. The aim of this paper is to investigate the influence of the arbitrary lateral loading on the pile group response, in order to improve (extend) the current design approach for laterally loaded pile groups. Free head, flexible bored piles in sand were analyzed through the extensive numerical study. The main hypothesis of the research is that some critical pile group configurations, loading directions, and soil conditions exist, which can lead to the unsafe structural design. Critical pile positions inside the commonly used pile group configurations are identified with respect to loading directions. The influence of different soil conditions was discussed.
PB  - MDPI
T2  - Journal of Marine Science and Engineering
T1  - Flexible Pile Group Interaction Factors under Arbitrary Lateral Loading in Sand
IS  - 8
DO  - 10.3390/jmse8100800
ER  - 

@article{
author = "Marjanović, Miloš and Vukićević, Mirjana and König, Diethard",
year = "2020",
abstract = "Marine and harbor structures, wind turbines, bridges, offshore platforms, industrial
chimneys, retaining structures etc. can be subjected to significant lateral loads from various sources. Appropriate assessment of the foundations capacity of these structures is thus necessary, especially when these structures are supported by pile groups. The pile group interaction effects under lateral loading have been investigated intensively in past decades, and the most of the conducted studies have considered lateral loading that acts along one of the two orthogonal directions, parallel to the edge of pile group. However, because of the stochastic nature of its source, the horizontal loading on the pile group may have arbitrary direction. The number of studies dealing with the pile groups under arbitrary loading is very limited. The aim of this paper is to investigate the influence of the arbitrary lateral loading on the pile group response, in order to improve (extend) the current design approach for laterally loaded pile groups. Free head, flexible bored piles in sand were analyzed through the extensive numerical study. The main hypothesis of the research is that some critical pile group configurations, loading directions, and soil conditions exist, which can lead to the unsafe structural design. Critical pile positions inside the commonly used pile group configurations are identified with respect to loading directions. The influence of different soil conditions was discussed.",
publisher = "MDPI",
journal = "Journal of Marine Science and Engineering",
title = "Flexible Pile Group Interaction Factors under Arbitrary Lateral Loading in Sand",
number = "8",
doi = "10.3390/jmse8100800"
}

Marjanović, M., Vukićević, M.,& König, D.. (2020). Flexible Pile Group Interaction Factors under Arbitrary Lateral Loading in Sand. in Journal of Marine Science and Engineering
MDPI.(8).
https://doi.org/10.3390/jmse8100800

Marjanović M, Vukićević M, König D. Flexible Pile Group Interaction Factors under Arbitrary Lateral Loading in Sand. in Journal of Marine Science and Engineering. 2020;(8).
doi:10.3390/jmse8100800 .

Marjanović, Miloš, Vukićević, Mirjana, König, Diethard, "Flexible Pile Group Interaction Factors under Arbitrary Lateral Loading in Sand" in Journal of Marine Science and Engineering, no. 8 (2020),
https://doi.org/10.3390/jmse8100800 . .

TY  - THES
AU  - Marjanović, Miloš
PY  - 2020
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/2181
AB  - The analysis of pile groups subjected to horizontal loading in one of two orthogonal directions is
a common problem in geotechnical engineering. However, the above analysis should sometimes
be extended with the additional cases of horizontal loading, in arbitrary direction. Although the
full scale experiments can provide the best insight into the above problem, they are expensive
and therefore not feasible solution. Instead, numerical (i.e. fi nite element) analysis usually
remains the ultimate tool for large scope studies.
The main objective of this research is the improvement of the analysis methodology of pile
group for the case of arbitrary static horizontal loading. Its influence is investigated numerically
to check for the existence of the "critical" pile group con figurations and soil conditions, that
may lead to the failure of the foundation structure and superstructure itself.
To reach the above objective, apriori sensitivity analysis of the considered problem and
identifi cation of the main problem parameters are conducted in the  first phase. After that, series
of complex 3D numerical models for laterally loaded pile group analysis have been generated
using PLAXIS 3D. Model validation is done by the back-calculation of available experimental
results. Parametric study of pile groups with various con figurations under arbitrary horizontal
loading is performed, with an emphasis on pile force distribution, bending response and pile
group efficiency.
Modelling and simulation processes and the optimization of the calculation time were improved
using the originally developed codes in Python. The use of multiple computers was
allowed by using the author's scripts developed within the thesis. The above research resulted
in thousands of numerical simulations, whose  findings provided the improved design methodology
of pile groups under arbitrary static horizontal loading.
T1  - Analysis of Interaction inside the pile group subjected to arbitrary horizontal loading
UR  - https://hdl.handle.net/21.15107/rcub_grafar_2181
ER  - 

@phdthesis{
author = "Marjanović, Miloš",
year = "2020",
abstract = "The analysis of pile groups subjected to horizontal loading in one of two orthogonal directions is
a common problem in geotechnical engineering. However, the above analysis should sometimes
be extended with the additional cases of horizontal loading, in arbitrary direction. Although the
full scale experiments can provide the best insight into the above problem, they are expensive
and therefore not feasible solution. Instead, numerical (i.e. fi nite element) analysis usually
remains the ultimate tool for large scope studies.
The main objective of this research is the improvement of the analysis methodology of pile
group for the case of arbitrary static horizontal loading. Its influence is investigated numerically
to check for the existence of the "critical" pile group con figurations and soil conditions, that
may lead to the failure of the foundation structure and superstructure itself.
To reach the above objective, apriori sensitivity analysis of the considered problem and
identifi cation of the main problem parameters are conducted in the  first phase. After that, series
of complex 3D numerical models for laterally loaded pile group analysis have been generated
using PLAXIS 3D. Model validation is done by the back-calculation of available experimental
results. Parametric study of pile groups with various con figurations under arbitrary horizontal
loading is performed, with an emphasis on pile force distribution, bending response and pile
group efficiency.
Modelling and simulation processes and the optimization of the calculation time were improved
using the originally developed codes in Python. The use of multiple computers was
allowed by using the author's scripts developed within the thesis. The above research resulted
in thousands of numerical simulations, whose  findings provided the improved design methodology
of pile groups under arbitrary static horizontal loading.",
title = "Analysis of Interaction inside the pile group subjected to arbitrary horizontal loading",
url = "https://hdl.handle.net/21.15107/rcub_grafar_2181"
}

Marjanović, M.. (2020). Analysis of Interaction inside the pile group subjected to arbitrary horizontal loading. .
https://hdl.handle.net/21.15107/rcub_grafar_2181

Marjanović M. Analysis of Interaction inside the pile group subjected to arbitrary horizontal loading. 2020;.
https://hdl.handle.net/21.15107/rcub_grafar_2181 .

Marjanović, Miloš, "Analysis of Interaction inside the pile group subjected to arbitrary horizontal loading" (2020),
https://hdl.handle.net/21.15107/rcub_grafar_2181 .

TY  - JOUR
AU  - Stojić, Dragoslav
AU  - Nestorović, Tamara
AU  - Marković, Nemanja
AU  - Marjanović, Miroslav
PY  - 2018
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/941
AB  - This paper presents an experimental-numerical analysis of damage localization of concrete plate-like elements on the basis of hybrid approach. The proposed hybrid approach uses the fast discrete wavelet transform, energy approach, and time of flight criterion for the purpose of localization of single and multidamage problems inside or on the periphery of concrete elements. Verification of the proposed damage localization approach has been performed under laboratory conditions using a laser scanning-based system with piezoelectric excitation of the wave propagation. Numerical simulation of the wave propagation is performed using the explicit finite element method using 3D models with linear-elastic material model of concrete with Rayleigh damping. The Rayleigh damping coefficients are determined on the basis of experimental data and implemented in numerical models. Validation of the numerical model is conducted, based on the comparison with sensor output signals obtained through experimental measuring and a very good agreement of results is obtained. The proposed hybrid approach to damage localization is verified using 15 different models/specimens, varying the number, shape (circular or notched), and position of damage, as well as the number and placement of actuators/sensors. For all the analyzed scenarios, the hybrid approach successfully localized the damage even for the least number of used sensor positions. In the models with the circular damage, the damage image created on the basis of the hybrid approach is almost identical to the actual shape of the damage, indicating a good potential of the method for damage localization.
PB  - John Wiley and Sons Ltd
T2  - Structural Control & Health Monitoring
T1  - Experimental and numerical research on damage localization in plate-like concrete structures using hybrid approach
IS  - 9
VL  - 25
DO  - 10.1002/stc.2214
ER  - 

@article{
author = "Stojić, Dragoslav and Nestorović, Tamara and Marković, Nemanja and Marjanović, Miroslav",
year = "2018",
abstract = "This paper presents an experimental-numerical analysis of damage localization of concrete plate-like elements on the basis of hybrid approach. The proposed hybrid approach uses the fast discrete wavelet transform, energy approach, and time of flight criterion for the purpose of localization of single and multidamage problems inside or on the periphery of concrete elements. Verification of the proposed damage localization approach has been performed under laboratory conditions using a laser scanning-based system with piezoelectric excitation of the wave propagation. Numerical simulation of the wave propagation is performed using the explicit finite element method using 3D models with linear-elastic material model of concrete with Rayleigh damping. The Rayleigh damping coefficients are determined on the basis of experimental data and implemented in numerical models. Validation of the numerical model is conducted, based on the comparison with sensor output signals obtained through experimental measuring and a very good agreement of results is obtained. The proposed hybrid approach to damage localization is verified using 15 different models/specimens, varying the number, shape (circular or notched), and position of damage, as well as the number and placement of actuators/sensors. For all the analyzed scenarios, the hybrid approach successfully localized the damage even for the least number of used sensor positions. In the models with the circular damage, the damage image created on the basis of the hybrid approach is almost identical to the actual shape of the damage, indicating a good potential of the method for damage localization.",
publisher = "John Wiley and Sons Ltd",
journal = "Structural Control & Health Monitoring",
title = "Experimental and numerical research on damage localization in plate-like concrete structures using hybrid approach",
number = "9",
volume = "25",
doi = "10.1002/stc.2214"
}

Stojić, D., Nestorović, T., Marković, N.,& Marjanović, M.. (2018). Experimental and numerical research on damage localization in plate-like concrete structures using hybrid approach. in Structural Control & Health Monitoring
John Wiley and Sons Ltd., 25(9).
https://doi.org/10.1002/stc.2214

Stojić D, Nestorović T, Marković N, Marjanović M. Experimental and numerical research on damage localization in plate-like concrete structures using hybrid approach. in Structural Control & Health Monitoring. 2018;25(9).
doi:10.1002/stc.2214 .

Stojić, Dragoslav, Nestorović, Tamara, Marković, Nemanja, Marjanović, Miroslav, "Experimental and numerical research on damage localization in plate-like concrete structures using hybrid approach" in Structural Control & Health Monitoring, 25, no. 9 (2018),
https://doi.org/10.1002/stc.2214 . .