TY  - JOUR
AU  - Mirković, Uroš B.
AU  - Kuzmanović, Vladan
AU  - Todorović, Goran
PY  - 2022
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/3011
AB  - Results of the conducted research aiming to demonstrate the methodology of optimization of dam monolith length (distance between contraction joints), through monitoring the thermal tensile stresses during construction and service life of a concrete gravity dam that is built using the block method, are presented in this paper. A 3D space–time numerical model for phased thermal stress analysis is employed in a large concrete gravity dam case study. For the adopted block dimensions, schedule, and dynamics of construction and material parameters, the thermal stress analysis is conducted, taking into account the following: thermal physical properties of the material, the cement hydration process, heat exchange with the external environment and the reservoir, and self-weight of the structure. The main advantage of the proposed methodology is the possibility of controlling the cracks resulting from thermal tensile stresses in the monolith of a concrete gravity dam, by optimizing the monolith’s length to minimize the zones in which the tensile capacity of concrete is exceeded. The results obtained from the temperature field analysis show that the maximum temperature increase in the dam’s body results from the cement hydration process in combination with summer air temperatures in the construction phase. The aforementioned factors account for the increase in temperature of up to 45.0 ◦C, while during winter cooling of the structure occurs due to lower temperatures, especially in the surface zones. The results of the stress field analysis show that the extreme values of thermal tensile stresses are present in the process of a sudden or gradual cooling of the concrete when shrinkage occurs. Finally, it is shown that the reduction of the monolith length by 5.0 m (from 20.0 m to 15.0 m) results in a decrease in the extreme thermal tensile stress values by an average of 0.70 MPa (up to 12.0%) in winter and an average of 1.10 MPa (up to 20.0%) in summer; while for the entirety of the analyzed time period, results in a decrease in the extreme thermal tensile stress values by an average of 16.0% (0.93 MPa).
PB  - MDPI
T2  - Applied Sciences
T1  - Long-Term Thermal Stress Analysis and Optimization of Contraction Joint Distance of Concrete Gravity Dams
SP  - 8163
VL  - 12
DO  - 10.3390/app12168163
ER  - 

@article{
author = "Mirković, Uroš B. and Kuzmanović, Vladan and Todorović, Goran",
year = "2022",
abstract = "Results of the conducted research aiming to demonstrate the methodology of optimization of dam monolith length (distance between contraction joints), through monitoring the thermal tensile stresses during construction and service life of a concrete gravity dam that is built using the block method, are presented in this paper. A 3D space–time numerical model for phased thermal stress analysis is employed in a large concrete gravity dam case study. For the adopted block dimensions, schedule, and dynamics of construction and material parameters, the thermal stress analysis is conducted, taking into account the following: thermal physical properties of the material, the cement hydration process, heat exchange with the external environment and the reservoir, and self-weight of the structure. The main advantage of the proposed methodology is the possibility of controlling the cracks resulting from thermal tensile stresses in the monolith of a concrete gravity dam, by optimizing the monolith’s length to minimize the zones in which the tensile capacity of concrete is exceeded. The results obtained from the temperature field analysis show that the maximum temperature increase in the dam’s body results from the cement hydration process in combination with summer air temperatures in the construction phase. The aforementioned factors account for the increase in temperature of up to 45.0 ◦C, while during winter cooling of the structure occurs due to lower temperatures, especially in the surface zones. The results of the stress field analysis show that the extreme values of thermal tensile stresses are present in the process of a sudden or gradual cooling of the concrete when shrinkage occurs. Finally, it is shown that the reduction of the monolith length by 5.0 m (from 20.0 m to 15.0 m) results in a decrease in the extreme thermal tensile stress values by an average of 0.70 MPa (up to 12.0%) in winter and an average of 1.10 MPa (up to 20.0%) in summer; while for the entirety of the analyzed time period, results in a decrease in the extreme thermal tensile stress values by an average of 16.0% (0.93 MPa).",
publisher = "MDPI",
journal = "Applied Sciences",
title = "Long-Term Thermal Stress Analysis and Optimization of Contraction Joint Distance of Concrete Gravity Dams",
pages = "8163",
volume = "12",
doi = "10.3390/app12168163"
}

Mirković, U. B., Kuzmanović, V.,& Todorović, G.. (2022). Long-Term Thermal Stress Analysis and Optimization of Contraction Joint Distance of Concrete Gravity Dams. in Applied Sciences
MDPI., 12, 8163.
https://doi.org/10.3390/app12168163

Mirković UB, Kuzmanović V, Todorović G. Long-Term Thermal Stress Analysis and Optimization of Contraction Joint Distance of Concrete Gravity Dams. in Applied Sciences. 2022;12:8163.
doi:10.3390/app12168163 .

Mirković, Uroš B., Kuzmanović, Vladan, Todorović, Goran, "Long-Term Thermal Stress Analysis and Optimization of Contraction Joint Distance of Concrete Gravity Dams" in Applied Sciences, 12 (2022):8163,
https://doi.org/10.3390/app12168163 . .

TY  - CONF
AU  - Mirković, Uroš B.
AU  - Radovanović, Slobodan
AU  - Divac, Ljubo
AU  - Mirković, Nikola
AU  - Obradović, Nikola
AU  - Popović, Zdenka
PY  - 2018
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/933
AB  - The subject of this paper is a comparative analysis of the alternative solutions for the construction of the supply tunnel section of HPP "Dabar" from km 4 + 272.54 to km 12 + 125.0 with the application of TBM technology, milling machines technology and combinations of TBM technology and milling machines. Hydraulic tunnel of the HPP "Dabar" is a tunnel under the pressure with a length of 12125.0 m, which will conduct water from the reservoir Nevesinje to the machine building of the hydropower plant "Dabar" in Dabarsko polje (Republic of Srpska, Bosnia and Herzegovina). Four different construction alternatives of the mentioned tunnel section were analysed: use of milling machines, use of Gripper TBM, use of Double Shield TBM, a combination of Gripper TBM and milling machines.
PB  - Springer Verlag
C3  - International Scientific Conference Energy Management of Municipal Transportation Facilities and Tra
T1  - Comparative Analysis of Alternative Solutions of Excavation for Section of Hydropower Tunnel HPP "Dabar"
EP  - 1064
SP  - 1055
VL  - 692
DO  - 10.1007/978-3-319-70987-1_114
ER  - 

@conference{
author = "Mirković, Uroš B. and Radovanović, Slobodan and Divac, Ljubo and Mirković, Nikola and Obradović, Nikola and Popović, Zdenka",
year = "2018",
abstract = "The subject of this paper is a comparative analysis of the alternative solutions for the construction of the supply tunnel section of HPP "Dabar" from km 4 + 272.54 to km 12 + 125.0 with the application of TBM technology, milling machines technology and combinations of TBM technology and milling machines. Hydraulic tunnel of the HPP "Dabar" is a tunnel under the pressure with a length of 12125.0 m, which will conduct water from the reservoir Nevesinje to the machine building of the hydropower plant "Dabar" in Dabarsko polje (Republic of Srpska, Bosnia and Herzegovina). Four different construction alternatives of the mentioned tunnel section were analysed: use of milling machines, use of Gripper TBM, use of Double Shield TBM, a combination of Gripper TBM and milling machines.",
publisher = "Springer Verlag",
journal = "International Scientific Conference Energy Management of Municipal Transportation Facilities and Tra",
title = "Comparative Analysis of Alternative Solutions of Excavation for Section of Hydropower Tunnel HPP "Dabar"",
pages = "1064-1055",
volume = "692",
doi = "10.1007/978-3-319-70987-1_114"
}

Mirković, U. B., Radovanović, S., Divac, L., Mirković, N., Obradović, N.,& Popović, Z.. (2018). Comparative Analysis of Alternative Solutions of Excavation for Section of Hydropower Tunnel HPP "Dabar". in International Scientific Conference Energy Management of Municipal Transportation Facilities and Tra
Springer Verlag., 692, 1055-1064.
https://doi.org/10.1007/978-3-319-70987-1_114

Mirković UB, Radovanović S, Divac L, Mirković N, Obradović N, Popović Z. Comparative Analysis of Alternative Solutions of Excavation for Section of Hydropower Tunnel HPP "Dabar". in International Scientific Conference Energy Management of Municipal Transportation Facilities and Tra. 2018;692:1055-1064.
doi:10.1007/978-3-319-70987-1_114 .

Mirković, Uroš B., Radovanović, Slobodan, Divac, Ljubo, Mirković, Nikola, Obradović, Nikola, Popović, Zdenka, "Comparative Analysis of Alternative Solutions of Excavation for Section of Hydropower Tunnel HPP "Dabar"" in International Scientific Conference Energy Management of Municipal Transportation Facilities and Tra, 692 (2018):1055-1064,
https://doi.org/10.1007/978-3-319-70987-1_114 . .

TY  - JOUR
AU  - Jevtić, Dragica
AU  - Mirković, Nikola
AU  - Mirković, Uroš B.
PY  - 2018
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/1111
T2  - Građevinski kalendar
T1  - Upotreba 3D štampača i savremenih materijala u građevinarstvu
EP  - 181
IS  - I-XX
SP  - 141
VL  - 50
UR  - https://hdl.handle.net/21.15107/rcub_grafar_1111
ER  - 

@article{
author = "Jevtić, Dragica and Mirković, Nikola and Mirković, Uroš B.",
year = "2018",
journal = "Građevinski kalendar",
title = "Upotreba 3D štampača i savremenih materijala u građevinarstvu",
pages = "181-141",
number = "I-XX",
volume = "50",
url = "https://hdl.handle.net/21.15107/rcub_grafar_1111"
}

Jevtić, D., Mirković, N.,& Mirković, U. B.. (2018). Upotreba 3D štampača i savremenih materijala u građevinarstvu. in Građevinski kalendar, 50(I-XX), 141-181.
https://hdl.handle.net/21.15107/rcub_grafar_1111

Jevtić D, Mirković N, Mirković UB. Upotreba 3D štampača i savremenih materijala u građevinarstvu. in Građevinski kalendar. 2018;50(I-XX):141-181.
https://hdl.handle.net/21.15107/rcub_grafar_1111 .

Jevtić, Dragica, Mirković, Nikola, Mirković, Uroš B., "Upotreba 3D štampača i savremenih materijala u građevinarstvu" in Građevinski kalendar, 50, no. I-XX (2018):141-181,
https://hdl.handle.net/21.15107/rcub_grafar_1111 .

TY  - JOUR
AU  - Babić, Predrag B.
AU  - Radovanović, Slobodan
AU  - Mirković, Uroš B.
PY  - 2018
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/928
AB  - In the framework of geotechnical investigations of the rock mass at the partition site MHE Bočac 2 (BiH), Jelašnica dams on the same river in southern Serbia and nine partition sites of hydroelectric power plants on the river Ibar, detailed geotechnical investigations of the rock mass were carried out. They included exploration drilling with the definition of quasihomogenic zones within the drilled core, determination of RQD for each separated quasi-chemical zone, dilatometric tests in each well, seismic ventilation between exploratory wells or seismic carotid, core testing by the Point Load method and laboratory tests of the single-axial strength of the samples. By connecting the results of the one-axial strength, the velocity of the elastic waves and the quality of the rockl mass (RMR), i.e. these indirect data for defining the deformability of the rock masses with the obtained results of in situation deformability testing, with the results of dilatometric tests, the analysis of correlation bonds is carried out which is applied in engineering geological or geotechnical practice. As is known, in engineering practice, the following correlations are used to define the deformation module: D = f(RMR); D= f(RMR,σci); D= f(Vp) i D = f(Vp, σci). After the analysis, a correlation was applied which included all three indirect data and it gave the closest data for defining the deformability of the rock mass.
AB  - U okviru geotehničkih istraživanja stenske mase na pregradnom mestu MHE 'Bočac 2‟ (BiH), brane 'Jelašnica' na istoimenoj reci u južnoj Srbiji i na devet pregradnih mesta hidroelektrana na Ibru (Srbija) izvršena su detaljna geotehnička ispitivanja stenske mase. Ona su obuhvatila: istražno bušenje sa definisanjem kvazihomogenih zona u okviru izbušenog jezgra, određivanje RQD-a za svaku izdvojenu kvazihomogenu zonu, dilatometarska ispitivanja u svakoj bušotini, seizmičko prozračivanje između istražnih bušotina ili seizmički karotaž, ispitivanje jezgra metodom PointLoad i laboratorijska ispi-tivanja jednoaksijalne čvrstoće uzoraka. Na navedenim istražnim lokacijama teren grade različite ste-nske mase. Teren pregradnog mesta MHE 'Bočac 2' je izgrađen od krednih krečnjaka, teren brane 'Jelašnica' od paleozojskih gnajseva, a teren hidroelektrana na Ibru od mezozojskih peridotita i serpentinita. Povezivanjem rezultata jednoaksijalne čvrstoće, brzine elastičnih talasa i kvaliteta stenske mase (RMR), odnosno ovih posrednih podataka za definisanje deformabilnosti stenskih masa sa do-bijenim rezultatima ispitivanja deformabilsnosti in situ, tj. Sa rezultatima dilatometarskih ispitivanja, urađena je analiza korelacionih veza koja se primenjuje u inženjeresko-geološkoj odnosno geotehničkoj praksi. Kao što je poznato, u inženjerskoj praksi primenjuju se sledeće korelacije za definisanje modula deformacije: D=f(RMR); D=f(RMR,𝜎𝑐𝑖); D=f(Vp) i D=f(Vp, 𝜎𝑐𝑖). Nakon analize, primenjena je korelacija, koja je obuhvatila sva tri posredna podatka i ona je dala najbliže podatke za definisanje deformabilnosti stenske mase. Sva navedena ispitivanja deformabilnosti metodom dilatometra, geofizička ispitivanja i inženjersko-geološko kartiranje jezgra i okolne stenske mase izvršena su od strane Instituta za vodoprivredu 'Jaroslav Černi' iz Beograda.
PB  - Savez inženjera i tehničara Srbije, Beograd
T2  - Tehnika
T1  - Correlative relations for defining the rock deformability
T1  - Korelativni odnosi za definisanje deformabilnosti stene
EP  - 634
IS  - 5
SP  - 629
VL  - 73
DO  - 10.5937/tehnika1805629B
ER  - 

@article{
author = "Babić, Predrag B. and Radovanović, Slobodan and Mirković, Uroš B.",
year = "2018",
abstract = "In the framework of geotechnical investigations of the rock mass at the partition site MHE Bočac 2 (BiH), Jelašnica dams on the same river in southern Serbia and nine partition sites of hydroelectric power plants on the river Ibar, detailed geotechnical investigations of the rock mass were carried out. They included exploration drilling with the definition of quasihomogenic zones within the drilled core, determination of RQD for each separated quasi-chemical zone, dilatometric tests in each well, seismic ventilation between exploratory wells or seismic carotid, core testing by the Point Load method and laboratory tests of the single-axial strength of the samples. By connecting the results of the one-axial strength, the velocity of the elastic waves and the quality of the rockl mass (RMR), i.e. these indirect data for defining the deformability of the rock masses with the obtained results of in situation deformability testing, with the results of dilatometric tests, the analysis of correlation bonds is carried out which is applied in engineering geological or geotechnical practice. As is known, in engineering practice, the following correlations are used to define the deformation module: D = f(RMR); D= f(RMR,σci); D= f(Vp) i D = f(Vp, σci). After the analysis, a correlation was applied which included all three indirect data and it gave the closest data for defining the deformability of the rock mass., U okviru geotehničkih istraživanja stenske mase na pregradnom mestu MHE 'Bočac 2‟ (BiH), brane 'Jelašnica' na istoimenoj reci u južnoj Srbiji i na devet pregradnih mesta hidroelektrana na Ibru (Srbija) izvršena su detaljna geotehnička ispitivanja stenske mase. Ona su obuhvatila: istražno bušenje sa definisanjem kvazihomogenih zona u okviru izbušenog jezgra, određivanje RQD-a za svaku izdvojenu kvazihomogenu zonu, dilatometarska ispitivanja u svakoj bušotini, seizmičko prozračivanje između istražnih bušotina ili seizmički karotaž, ispitivanje jezgra metodom PointLoad i laboratorijska ispi-tivanja jednoaksijalne čvrstoće uzoraka. Na navedenim istražnim lokacijama teren grade različite ste-nske mase. Teren pregradnog mesta MHE 'Bočac 2' je izgrađen od krednih krečnjaka, teren brane 'Jelašnica' od paleozojskih gnajseva, a teren hidroelektrana na Ibru od mezozojskih peridotita i serpentinita. Povezivanjem rezultata jednoaksijalne čvrstoće, brzine elastičnih talasa i kvaliteta stenske mase (RMR), odnosno ovih posrednih podataka za definisanje deformabilnosti stenskih masa sa do-bijenim rezultatima ispitivanja deformabilsnosti in situ, tj. Sa rezultatima dilatometarskih ispitivanja, urađena je analiza korelacionih veza koja se primenjuje u inženjeresko-geološkoj odnosno geotehničkoj praksi. Kao što je poznato, u inženjerskoj praksi primenjuju se sledeće korelacije za definisanje modula deformacije: D=f(RMR); D=f(RMR,𝜎𝑐𝑖); D=f(Vp) i D=f(Vp, 𝜎𝑐𝑖). Nakon analize, primenjena je korelacija, koja je obuhvatila sva tri posredna podatka i ona je dala najbliže podatke za definisanje deformabilnosti stenske mase. Sva navedena ispitivanja deformabilnosti metodom dilatometra, geofizička ispitivanja i inženjersko-geološko kartiranje jezgra i okolne stenske mase izvršena su od strane Instituta za vodoprivredu 'Jaroslav Černi' iz Beograda.",
publisher = "Savez inženjera i tehničara Srbije, Beograd",
journal = "Tehnika",
title = "Correlative relations for defining the rock deformability, Korelativni odnosi za definisanje deformabilnosti stene",
pages = "634-629",
number = "5",
volume = "73",
doi = "10.5937/tehnika1805629B"
}

Babić, P. B., Radovanović, S.,& Mirković, U. B.. (2018). Correlative relations for defining the rock deformability. in Tehnika
Savez inženjera i tehničara Srbije, Beograd., 73(5), 629-634.
https://doi.org/10.5937/tehnika1805629B

Babić PB, Radovanović S, Mirković UB. Correlative relations for defining the rock deformability. in Tehnika. 2018;73(5):629-634.
doi:10.5937/tehnika1805629B .

Babić, Predrag B., Radovanović, Slobodan, Mirković, Uroš B., "Correlative relations for defining the rock deformability" in Tehnika, 73, no. 5 (2018):629-634,
https://doi.org/10.5937/tehnika1805629B . .

TY  - CONF
AU  - Obradović, Nikola
AU  - Mirković, Nikola
AU  - Divac, Ljubo
AU  - Mitković, Predrag
AU  - Mirković, Uroš B.
PY  - 2017
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/1511
PB  - Društvo za ispitivanje i istraživanje materijala i konstrukcija Srbije, Beograd
C3  - Zbornik radova / Međunarodni simpozijum o istraživanjima i primeni savremenih dostignuća u građevinarstvu u oblasti materijala i konstrukcija [u okviru XXVII kongresa Društva za ispitivanje i istraživanje materijala i konstrukcija (DIMK) Srbije], Vršac, 1
T1  - Analiza različitih sistema ventilacije, grejanja i hlađenja kod industrijskih objekata
EP  - 498
SP  - 491
UR  - https://hdl.handle.net/21.15107/rcub_grafar_1511
ER  - 

@conference{
author = "Obradović, Nikola and Mirković, Nikola and Divac, Ljubo and Mitković, Predrag and Mirković, Uroš B.",
year = "2017",
publisher = "Društvo za ispitivanje i istraživanje materijala i konstrukcija Srbije, Beograd",
journal = "Zbornik radova / Međunarodni simpozijum o istraživanjima i primeni savremenih dostignuća u građevinarstvu u oblasti materijala i konstrukcija [u okviru XXVII kongresa Društva za ispitivanje i istraživanje materijala i konstrukcija (DIMK) Srbije], Vršac, 1",
title = "Analiza različitih sistema ventilacije, grejanja i hlađenja kod industrijskih objekata",
pages = "498-491",
url = "https://hdl.handle.net/21.15107/rcub_grafar_1511"
}

Obradović, N., Mirković, N., Divac, L., Mitković, P.,& Mirković, U. B.. (2017). Analiza različitih sistema ventilacije, grejanja i hlađenja kod industrijskih objekata. in Zbornik radova / Međunarodni simpozijum o istraživanjima i primeni savremenih dostignuća u građevinarstvu u oblasti materijala i konstrukcija [u okviru XXVII kongresa Društva za ispitivanje i istraživanje materijala i konstrukcija (DIMK) Srbije], Vršac, 1
Društvo za ispitivanje i istraživanje materijala i konstrukcija Srbije, Beograd., 491-498.
https://hdl.handle.net/21.15107/rcub_grafar_1511

Obradović N, Mirković N, Divac L, Mitković P, Mirković UB. Analiza različitih sistema ventilacije, grejanja i hlađenja kod industrijskih objekata. in Zbornik radova / Međunarodni simpozijum o istraživanjima i primeni savremenih dostignuća u građevinarstvu u oblasti materijala i konstrukcija [u okviru XXVII kongresa Društva za ispitivanje i istraživanje materijala i konstrukcija (DIMK) Srbije], Vršac, 1. 2017;:491-498.
https://hdl.handle.net/21.15107/rcub_grafar_1511 .

Obradović, Nikola, Mirković, Nikola, Divac, Ljubo, Mitković, Predrag, Mirković, Uroš B., "Analiza različitih sistema ventilacije, grejanja i hlađenja kod industrijskih objekata" in Zbornik radova / Međunarodni simpozijum o istraživanjima i primeni savremenih dostignuća u građevinarstvu u oblasti materijala i konstrukcija [u okviru XXVII kongresa Društva za ispitivanje i istraživanje materijala i konstrukcija (DIMK) Srbije], Vršac, 1 (2017):491-498,
https://hdl.handle.net/21.15107/rcub_grafar_1511 .