TY  - CONF
AU  - Krtinić, Nemanja
AU  - Gams, Matija
AU  - Marinković, Marko
PY  - 2023
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/3197
AB  - Confined masonry (CM) is one of the most popular and affordable earthquake-resistant con-struction technology for masonry structures. The reinforced concrete (RC) tie-columns in such construction play a crucial role in improving seismic response. However, their interaction with the masonry warrants a review due to recent changes in masonry construction, which are typical for Southeastern Europe. The modern masonry walls built from clay units are thick to achieve thermal efficiency. The tie-columns size has also increased, but they are narrower than the masonry. A part of masonry thus protrudes from the area confined by tie columns, which can lead to stress concentrations and early onset of damage of the protruding masonry, as was observed in recent tests on such masonry. This paper numerically analyzes this problem using a detailed three-dimensional (3D) finite element (FE) model that can capture this effect. The numerical model was developed in ABAQUS, and uses Concrete Damage Plasticity (CDP) material model to model the brittle response of clay blocks. All input data for the numerical model were obtained by dedicated tests. The results are compared to tests of walls in terms of damage propagation, strength and deformation response and show that damage to the protruding masonry can be successfully modelled. The results show a good alignment with the experiments and can be used for detailed modelling of seismic response of CM masonry structures and further research.
C3  - COMPDYN 2023 - 9th ECCOMAS Thematic Conference on Computational Methods in Structural Dynamics and Earthquake Engineering, Athens, Greece, 12-14 June 2023.
T1  - Experimental and numerical investigation of the seismic response of confined masonry walls
UR  - https://hdl.handle.net/21.15107/rcub_grafar_3197
ER  - 

@conference{
author = "Krtinić, Nemanja and Gams, Matija and Marinković, Marko",
year = "2023",
abstract = "Confined masonry (CM) is one of the most popular and affordable earthquake-resistant con-struction technology for masonry structures. The reinforced concrete (RC) tie-columns in such construction play a crucial role in improving seismic response. However, their interaction with the masonry warrants a review due to recent changes in masonry construction, which are typical for Southeastern Europe. The modern masonry walls built from clay units are thick to achieve thermal efficiency. The tie-columns size has also increased, but they are narrower than the masonry. A part of masonry thus protrudes from the area confined by tie columns, which can lead to stress concentrations and early onset of damage of the protruding masonry, as was observed in recent tests on such masonry. This paper numerically analyzes this problem using a detailed three-dimensional (3D) finite element (FE) model that can capture this effect. The numerical model was developed in ABAQUS, and uses Concrete Damage Plasticity (CDP) material model to model the brittle response of clay blocks. All input data for the numerical model were obtained by dedicated tests. The results are compared to tests of walls in terms of damage propagation, strength and deformation response and show that damage to the protruding masonry can be successfully modelled. The results show a good alignment with the experiments and can be used for detailed modelling of seismic response of CM masonry structures and further research.",
journal = "COMPDYN 2023 - 9th ECCOMAS Thematic Conference on Computational Methods in Structural Dynamics and Earthquake Engineering, Athens, Greece, 12-14 June 2023.",
title = "Experimental and numerical investigation of the seismic response of confined masonry walls",
url = "https://hdl.handle.net/21.15107/rcub_grafar_3197"
}

Krtinić, N., Gams, M.,& Marinković, M.. (2023). Experimental and numerical investigation of the seismic response of confined masonry walls. in COMPDYN 2023 - 9th ECCOMAS Thematic Conference on Computational Methods in Structural Dynamics and Earthquake Engineering, Athens, Greece, 12-14 June 2023..
https://hdl.handle.net/21.15107/rcub_grafar_3197

Krtinić N, Gams M, Marinković M. Experimental and numerical investigation of the seismic response of confined masonry walls. in COMPDYN 2023 - 9th ECCOMAS Thematic Conference on Computational Methods in Structural Dynamics and Earthquake Engineering, Athens, Greece, 12-14 June 2023.. 2023;.
https://hdl.handle.net/21.15107/rcub_grafar_3197 .

Krtinić, Nemanja, Gams, Matija, Marinković, Marko, "Experimental and numerical investigation of the seismic response of confined masonry walls" in COMPDYN 2023 - 9th ECCOMAS Thematic Conference on Computational Methods in Structural Dynamics and Earthquake Engineering, Athens, Greece, 12-14 June 2023. (2023),
https://hdl.handle.net/21.15107/rcub_grafar_3197 .

TY  - CONF
AU  - Krtinić, Nemanja
AU  - Gams, Matija
AU  - Marinković, Marko
PY  - 2023
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/3194
AB  - Masonry structures are commonly used for building residential buildings throughout the Balkans and worldwide, in urban and rural areas and areas with seismic risk. For masonry construction in regions with seismic risk, confined masonry (CM) construction offers an appealing alternative to unreinforced masonry (URM) due to its better seismic performance. The numerical simulation of CM is often based on the Equivalent Strut Model (ESM). Such a model provides a very reasonable compromise between accuracy and efficiency and is simple enough for use in design. The purpose of this paper is to compare the results of an experimental shear compression test on a modern CM wall with different ESM models. Five ESM models proposed by various authors are compared. The numerical pushover analyses were performed in the SAP2000 software, and the reference points of the model that gave the best alignment with experimental results were estimated using regression analyses. The results show that the simple modelling of CM walls with an equivalent diagonal strut, which carries load only in compression, can accurately simulate the global seismic response and is suitable for practical applications.
C3  - Proceedings of the 2nd Croatian Conference on Earthquake Engineering - 2CroCEE Zagreb, Croatia - March 22 to 24, 2023.
T1  - Pushover analysis of confined masonry walls using equivalent diagonal strut models
DO  - 10.5592/CO/2CroCEE.2023.30
ER  - 

@conference{
author = "Krtinić, Nemanja and Gams, Matija and Marinković, Marko",
year = "2023",
abstract = "Masonry structures are commonly used for building residential buildings throughout the Balkans and worldwide, in urban and rural areas and areas with seismic risk. For masonry construction in regions with seismic risk, confined masonry (CM) construction offers an appealing alternative to unreinforced masonry (URM) due to its better seismic performance. The numerical simulation of CM is often based on the Equivalent Strut Model (ESM). Such a model provides a very reasonable compromise between accuracy and efficiency and is simple enough for use in design. The purpose of this paper is to compare the results of an experimental shear compression test on a modern CM wall with different ESM models. Five ESM models proposed by various authors are compared. The numerical pushover analyses were performed in the SAP2000 software, and the reference points of the model that gave the best alignment with experimental results were estimated using regression analyses. The results show that the simple modelling of CM walls with an equivalent diagonal strut, which carries load only in compression, can accurately simulate the global seismic response and is suitable for practical applications.",
journal = "Proceedings of the 2nd Croatian Conference on Earthquake Engineering - 2CroCEE Zagreb, Croatia - March 22 to 24, 2023.",
title = "Pushover analysis of confined masonry walls using equivalent diagonal strut models",
doi = "10.5592/CO/2CroCEE.2023.30"
}

Krtinić, N., Gams, M.,& Marinković, M.. (2023). Pushover analysis of confined masonry walls using equivalent diagonal strut models. in Proceedings of the 2nd Croatian Conference on Earthquake Engineering - 2CroCEE Zagreb, Croatia - March 22 to 24, 2023..
https://doi.org/10.5592/CO/2CroCEE.2023.30

Krtinić N, Gams M, Marinković M. Pushover analysis of confined masonry walls using equivalent diagonal strut models. in Proceedings of the 2nd Croatian Conference on Earthquake Engineering - 2CroCEE Zagreb, Croatia - March 22 to 24, 2023.. 2023;.
doi:10.5592/CO/2CroCEE.2023.30 .

Krtinić, Nemanja, Gams, Matija, Marinković, Marko, "Pushover analysis of confined masonry walls using equivalent diagonal strut models" in Proceedings of the 2nd Croatian Conference on Earthquake Engineering - 2CroCEE Zagreb, Croatia - March 22 to 24, 2023. (2023),
https://doi.org/10.5592/CO/2CroCEE.2023.30 . .

TY  - CONF
AU  - Marinković, Marko
AU  - Brzev, Svetlana
AU  - Krtinić, Nemanja
AU  - Žugić, Željko
PY  - 2022
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/2871
AB  - Seismic safety of schools should be one of the highest priorities for each community. Besides being important to design the school buildings such as to avoid damage or collapse in earthquakes, they should also remain safe and functional as a shelter for evacuation after an earthquake. The aim of this paper is to raise awareness of the importance to study and assess the seismic risk of existing schools, as well as to emphasize a need for adequate seismic design of new school buildings. Examples of damage in school buildings due to recent earthquakes in the region were presented since they are relevant for Serbia. Observations from the survey of school buildings in Serbia have been used for a comparison with the representative examples of damaged school buildings in Croatia and Albania, thus deriving the conclusions of what could be expected in Serbia in a case of moderate earthquake.
C3  - 16th Congress of ASES 2022, 28-30 September 2022, Aranđelovac
T1  - Seismic performance of school buildings in recent earthquakes: lessons for Serbia
UR  - https://hdl.handle.net/21.15107/rcub_grafar_2871
ER  - 

@conference{
author = "Marinković, Marko and Brzev, Svetlana and Krtinić, Nemanja and Žugić, Željko",
year = "2022",
abstract = "Seismic safety of schools should be one of the highest priorities for each community. Besides being important to design the school buildings such as to avoid damage or collapse in earthquakes, they should also remain safe and functional as a shelter for evacuation after an earthquake. The aim of this paper is to raise awareness of the importance to study and assess the seismic risk of existing schools, as well as to emphasize a need for adequate seismic design of new school buildings. Examples of damage in school buildings due to recent earthquakes in the region were presented since they are relevant for Serbia. Observations from the survey of school buildings in Serbia have been used for a comparison with the representative examples of damaged school buildings in Croatia and Albania, thus deriving the conclusions of what could be expected in Serbia in a case of moderate earthquake.",
journal = "16th Congress of ASES 2022, 28-30 September 2022, Aranđelovac",
title = "Seismic performance of school buildings in recent earthquakes: lessons for Serbia",
url = "https://hdl.handle.net/21.15107/rcub_grafar_2871"
}

Marinković, M., Brzev, S., Krtinić, N.,& Žugić, Ž.. (2022). Seismic performance of school buildings in recent earthquakes: lessons for Serbia. in 16th Congress of ASES 2022, 28-30 September 2022, Aranđelovac.
https://hdl.handle.net/21.15107/rcub_grafar_2871

Marinković M, Brzev S, Krtinić N, Žugić Ž. Seismic performance of school buildings in recent earthquakes: lessons for Serbia. in 16th Congress of ASES 2022, 28-30 September 2022, Aranđelovac. 2022;.
https://hdl.handle.net/21.15107/rcub_grafar_2871 .

Marinković, Marko, Brzev, Svetlana, Krtinić, Nemanja, Žugić, Željko, "Seismic performance of school buildings in recent earthquakes: lessons for Serbia" in 16th Congress of ASES 2022, 28-30 September 2022, Aranđelovac (2022),
https://hdl.handle.net/21.15107/rcub_grafar_2871 .

TY  - CONF
AU  - Matijević, Tamara
AU  - Gramić, Filip
AU  - Krtinić, Nemanja
AU  - Kojadinović, Filip
AU  - Dragović, Magdalena
PY  - 2017
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/1507
AB  - Visualization skills of 3D space and its elements until recent times were just a matter of ones' natural talents. Today, there are many available technological solutions for improvements and support of 3D visualization. Descriptive geometry as an engineering subject, deals a lot with 3D visualization problems, giving the necessary knowledge base for several engineering professions. Some 3D geometric tasks with geometric entities - Plato's solids were challenging for visualization in an interesting combination of two environments. Cardboard physical model of coordinate planes, along with transparent inclined plane made of plastic folie, was a physical environment for the experiment. 3D computer generated models of geometric solids were imported in augmented reality smartphone application Augment in order to simulate several task settings and solutions. The paper presents the procedures of both 3D models' creation and results of visualization in Augments environment.
PB  - Central Institute for Conservation ; Scientific Association for the Development and Promotion of New Technologies, Belgrade ; Sopot
C3  - Proceedings of Selected Papers / The First International Students Scientific Conference Multidisciplinary Approach to Contemporary Research
T1  - Where physical and virtual models meet: Visualization of 3D geometric tasks
EP  - 345
SP  - 336
UR  - https://hdl.handle.net/21.15107/rcub_grafar_1507
ER  - 

@conference{
author = "Matijević, Tamara and Gramić, Filip and Krtinić, Nemanja and Kojadinović, Filip and Dragović, Magdalena",
year = "2017",
abstract = "Visualization skills of 3D space and its elements until recent times were just a matter of ones' natural talents. Today, there are many available technological solutions for improvements and support of 3D visualization. Descriptive geometry as an engineering subject, deals a lot with 3D visualization problems, giving the necessary knowledge base for several engineering professions. Some 3D geometric tasks with geometric entities - Plato's solids were challenging for visualization in an interesting combination of two environments. Cardboard physical model of coordinate planes, along with transparent inclined plane made of plastic folie, was a physical environment for the experiment. 3D computer generated models of geometric solids were imported in augmented reality smartphone application Augment in order to simulate several task settings and solutions. The paper presents the procedures of both 3D models' creation and results of visualization in Augments environment.",
publisher = "Central Institute for Conservation ; Scientific Association for the Development and Promotion of New Technologies, Belgrade ; Sopot",
journal = "Proceedings of Selected Papers / The First International Students Scientific Conference Multidisciplinary Approach to Contemporary Research",
title = "Where physical and virtual models meet: Visualization of 3D geometric tasks",
pages = "345-336",
url = "https://hdl.handle.net/21.15107/rcub_grafar_1507"
}

Matijević, T., Gramić, F., Krtinić, N., Kojadinović, F.,& Dragović, M.. (2017). Where physical and virtual models meet: Visualization of 3D geometric tasks. in Proceedings of Selected Papers / The First International Students Scientific Conference Multidisciplinary Approach to Contemporary Research
Central Institute for Conservation ; Scientific Association for the Development and Promotion of New Technologies, Belgrade ; Sopot., 336-345.
https://hdl.handle.net/21.15107/rcub_grafar_1507

Matijević T, Gramić F, Krtinić N, Kojadinović F, Dragović M. Where physical and virtual models meet: Visualization of 3D geometric tasks. in Proceedings of Selected Papers / The First International Students Scientific Conference Multidisciplinary Approach to Contemporary Research. 2017;:336-345.
https://hdl.handle.net/21.15107/rcub_grafar_1507 .

Matijević, Tamara, Gramić, Filip, Krtinić, Nemanja, Kojadinović, Filip, Dragović, Magdalena, "Where physical and virtual models meet: Visualization of 3D geometric tasks" in Proceedings of Selected Papers / The First International Students Scientific Conference Multidisciplinary Approach to Contemporary Research (2017):336-345,
https://hdl.handle.net/21.15107/rcub_grafar_1507 .