TY  - JOUR
AU  - Marković, Nemanja
AU  - Marjanović, Miroslav
AU  - Cvetković, Radovan
PY  - 2022
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/2674
AB  - There is a growing research and production interest for the application of lower-cost
hybrid cross-laminated timber (CLT) panels composed of timber layers of dissimilar quality.
Therefore, an approach for the design of cost-effective hybrid CLT panels in bending, based
on the existing analytical and novel finite element procedures, is presented in the paper.
The gamma-method, the extended gamma method, and the composite theory are applied
in the analysis of square panels, while the finite element model based on the Reddy’s
full layerwise theory is used for the complex-shape panels in bending. An extensive
benchmark technical and economic study is performed for 25 CLT panels, considering
various spans, lamination schemes, geometries, and boundary conditions. Cost savings
made by using a lower timber class in central zones of CLT panels are highlighted and
quantified. This concept shows an economic potential that should be considered during
the design and production of CLT panels in structural engineering applications, such as
lightweight floor structures.
PB  - Croatian Association of Civil Engineers
T2  - Gradjevinar
T1  - Design approach for cost-effective hybrid CLT floors
EP  - 311
IS  - 4
SP  - 301
VL  - 74
DO  - 10.14256/JCE.3271.2021
ER  - 

@article{
author = "Marković, Nemanja and Marjanović, Miroslav and Cvetković, Radovan",
year = "2022",
abstract = "There is a growing research and production interest for the application of lower-cost
hybrid cross-laminated timber (CLT) panels composed of timber layers of dissimilar quality.
Therefore, an approach for the design of cost-effective hybrid CLT panels in bending, based
on the existing analytical and novel finite element procedures, is presented in the paper.
The gamma-method, the extended gamma method, and the composite theory are applied
in the analysis of square panels, while the finite element model based on the Reddy’s
full layerwise theory is used for the complex-shape panels in bending. An extensive
benchmark technical and economic study is performed for 25 CLT panels, considering
various spans, lamination schemes, geometries, and boundary conditions. Cost savings
made by using a lower timber class in central zones of CLT panels are highlighted and
quantified. This concept shows an economic potential that should be considered during
the design and production of CLT panels in structural engineering applications, such as
lightweight floor structures.",
publisher = "Croatian Association of Civil Engineers",
journal = "Gradjevinar",
title = "Design approach for cost-effective hybrid CLT floors",
pages = "311-301",
number = "4",
volume = "74",
doi = "10.14256/JCE.3271.2021"
}

Marković, N., Marjanović, M.,& Cvetković, R.. (2022). Design approach for cost-effective hybrid CLT floors. in Gradjevinar
Croatian Association of Civil Engineers., 74(4), 301-311.
https://doi.org/10.14256/JCE.3271.2021

Marković N, Marjanović M, Cvetković R. Design approach for cost-effective hybrid CLT floors. in Gradjevinar. 2022;74(4):301-311.
doi:10.14256/JCE.3271.2021 .

Marković, Nemanja, Marjanović, Miroslav, Cvetković, Radovan, "Design approach for cost-effective hybrid CLT floors" in Gradjevinar, 74, no. 4 (2022):301-311,
https://doi.org/10.14256/JCE.3271.2021 . .

TY  - JOUR
AU  - Marjanović, Miroslav
AU  - Marković, Nemanja
AU  - Damnjanović, Emilija
AU  - Cvetković, Radovan
PY  - 2020
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/2075
AB  - Cross-laminated timber (CLT) panels have an increasing market share and extensive application in civil engineering, as full size walls or light floor structures. Due to their low environmental impact, excellent thermal characteristics and high mechanical performance, they are being extensively applied instead of conventional mineral-based building materials. The thick and orthogonal structure of CLT provides the considerable stiffness with the low weight and makes such panels particularly suitable in seismic-prone areas. The ease of assembly allows prefabrication and reduces construction time and cost.
Current models for calculating the stress-deformation state of a CLT loaded out-of-plane mainly emerged from the long tradition of using very simple one-dimensional (beam-like) elements in timber structures. The paper tends to overcome some limitations of the current models by using the full-layerwise plate theory (FLWT) of Reddy, serving as a basis for the implementation of layered finite elements. The proposed model accounts for the complex 3D stress state in CLT loaded out-of-plane and implies an original procedure for stress calculation. It is implemented using the original object-oriented MATLAB framework, while the graphical user interface for pre- and post-processing is developed using GiD.
The presented approach is validated using the available numerical and experimental data in the literature, and compared against the commonly used methods for the design of CLT. Finally, the 3D stress-deformation state in the CLT slab of complex shape (commonly used in building structures) is obtained using the FLWT-based finite elements. The results are validated against the numerical data from the commercial software, and then used for checking of the ultimate and serviceability limit states for CLT slab according to Eurocode 5. Excellent agreement of the obtained results confirmed the potential of the proposed model to become a promising tool for engineering design of CLT slabs of arbitrary geometry.
PB  - Elsevier
T2  - Thin-Walled Structures
T1  - Three-dimensional stress analysis and design of cross-laminated timber panels using full-layerwise-theory-based finite element method
SP  - 107156
VL  - 157
DO  - 10.1016/j.tws.2020.107156
ER  - 

@article{
author = "Marjanović, Miroslav and Marković, Nemanja and Damnjanović, Emilija and Cvetković, Radovan",
year = "2020",
abstract = "Cross-laminated timber (CLT) panels have an increasing market share and extensive application in civil engineering, as full size walls or light floor structures. Due to their low environmental impact, excellent thermal characteristics and high mechanical performance, they are being extensively applied instead of conventional mineral-based building materials. The thick and orthogonal structure of CLT provides the considerable stiffness with the low weight and makes such panels particularly suitable in seismic-prone areas. The ease of assembly allows prefabrication and reduces construction time and cost.
Current models for calculating the stress-deformation state of a CLT loaded out-of-plane mainly emerged from the long tradition of using very simple one-dimensional (beam-like) elements in timber structures. The paper tends to overcome some limitations of the current models by using the full-layerwise plate theory (FLWT) of Reddy, serving as a basis for the implementation of layered finite elements. The proposed model accounts for the complex 3D stress state in CLT loaded out-of-plane and implies an original procedure for stress calculation. It is implemented using the original object-oriented MATLAB framework, while the graphical user interface for pre- and post-processing is developed using GiD.
The presented approach is validated using the available numerical and experimental data in the literature, and compared against the commonly used methods for the design of CLT. Finally, the 3D stress-deformation state in the CLT slab of complex shape (commonly used in building structures) is obtained using the FLWT-based finite elements. The results are validated against the numerical data from the commercial software, and then used for checking of the ultimate and serviceability limit states for CLT slab according to Eurocode 5. Excellent agreement of the obtained results confirmed the potential of the proposed model to become a promising tool for engineering design of CLT slabs of arbitrary geometry.",
publisher = "Elsevier",
journal = "Thin-Walled Structures",
title = "Three-dimensional stress analysis and design of cross-laminated timber panels using full-layerwise-theory-based finite element method",
pages = "107156",
volume = "157",
doi = "10.1016/j.tws.2020.107156"
}

Marjanović, M., Marković, N., Damnjanović, E.,& Cvetković, R.. (2020). Three-dimensional stress analysis and design of cross-laminated timber panels using full-layerwise-theory-based finite element method. in Thin-Walled Structures
Elsevier., 157, 107156.
https://doi.org/10.1016/j.tws.2020.107156

Marjanović M, Marković N, Damnjanović E, Cvetković R. Three-dimensional stress analysis and design of cross-laminated timber panels using full-layerwise-theory-based finite element method. in Thin-Walled Structures. 2020;157:107156.
doi:10.1016/j.tws.2020.107156 .

Marjanović, Miroslav, Marković, Nemanja, Damnjanović, Emilija, Cvetković, Radovan, "Three-dimensional stress analysis and design of cross-laminated timber panels using full-layerwise-theory-based finite element method" in Thin-Walled Structures, 157 (2020):107156,
https://doi.org/10.1016/j.tws.2020.107156 . .

TY  - CONF
AU  - Cvetković, Radovan
AU  - Stojić, Dragoslav
AU  - Stevanović, Boško
AU  - Ranković, S.
AU  - Marković, N.
AU  - Conić, S.
PY  - 2016
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/1401
PB  - Društvo građevinskih konstruktera Srbije, Beograd
C3  - Zbornik radova / Društvо građevinskih konstruktera Srbije, Simpozijum 2016, 15-17. septembar, Zlatibor
T1  - Računska analiza nekih metoda sprezanja drveta i betona
EP  - 526
SP  - 517
UR  - https://hdl.handle.net/21.15107/rcub_grafar_1401
ER  - 

@conference{
author = "Cvetković, Radovan and Stojić, Dragoslav and Stevanović, Boško and Ranković, S. and Marković, N. and Conić, S.",
year = "2016",
publisher = "Društvo građevinskih konstruktera Srbije, Beograd",
journal = "Zbornik radova / Društvо građevinskih konstruktera Srbije, Simpozijum 2016, 15-17. septembar, Zlatibor",
title = "Računska analiza nekih metoda sprezanja drveta i betona",
pages = "526-517",
url = "https://hdl.handle.net/21.15107/rcub_grafar_1401"
}

Cvetković, R., Stojić, D., Stevanović, B., Ranković, S., Marković, N.,& Conić, S.. (2016). Računska analiza nekih metoda sprezanja drveta i betona. in Zbornik radova / Društvо građevinskih konstruktera Srbije, Simpozijum 2016, 15-17. septembar, Zlatibor
Društvo građevinskih konstruktera Srbije, Beograd., 517-526.
https://hdl.handle.net/21.15107/rcub_grafar_1401

Cvetković R, Stojić D, Stevanović B, Ranković S, Marković N, Conić S. Računska analiza nekih metoda sprezanja drveta i betona. in Zbornik radova / Društvо građevinskih konstruktera Srbije, Simpozijum 2016, 15-17. septembar, Zlatibor. 2016;:517-526.
https://hdl.handle.net/21.15107/rcub_grafar_1401 .

Cvetković, Radovan, Stojić, Dragoslav, Stevanović, Boško, Ranković, S., Marković, N., Conić, S., "Računska analiza nekih metoda sprezanja drveta i betona" in Zbornik radova / Društvо građevinskih konstruktera Srbije, Simpozijum 2016, 15-17. septembar, Zlatibor (2016):517-526,
https://hdl.handle.net/21.15107/rcub_grafar_1401 .

TY  - JOUR
AU  - Stojić, Dragoslav
AU  - Stevanović, Boško
AU  - Kočetov, Tatjana
AU  - Cvetković, Radovan
PY  - 2003
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/41
AB  - Introductory part of this paper shows a brief review of design concept of timber structures, according to Ultimate Limit States and Serviceability Limit States, specially in accordance with Eurocode 5 draft (Design timber structures, part 1.1 "General rules and rules for buildings). In what follows, design of some structural elements according to our standards in use established on allowable stress design concept and to EC 5, is illustrated by numerical examples which in the best way show differences between these two concepts.
AB  - U uvodnom delu ovog rada dat je kratki prikaz koncepta proračuna drvenih konstrukcija prema graničnim stanjima nosivosti i graničnim stanjima upotrebljivosti i to prema nacrtu evropskih propisa, tj. prema Evrokodu 5 (Proračun drvenih konstrukcija, deo 1.1: Opsta pravila i pravila za proračun zgrada). U nastavku, preko prikazanog brojnog primera, dat je konkretan proračun određenih konstrukcijskih elemenata prema Evrokodu 5 i prema našoj važećoj regulativi, odnosno konceptu proračuna na osnovu dopuštenih napona materijala, sto na najbolji način ilustruje razlike između jednog i drugog koncepta.
PB  - Univerzitet u Nišu - Građevinsko-arhitektonski fakultet, Niš
T2  - Nauka + Praksa
T1  - Proračun konstrukcija velikih raspona od lepljenog lameliranog drveta prema graničnim stanjima
EP  - 29
IS  - 6
SP  - 24
UR  - https://hdl.handle.net/21.15107/rcub_grafar_41
ER  - 

@article{
author = "Stojić, Dragoslav and Stevanović, Boško and Kočetov, Tatjana and Cvetković, Radovan",
year = "2003",
abstract = "Introductory part of this paper shows a brief review of design concept of timber structures, according to Ultimate Limit States and Serviceability Limit States, specially in accordance with Eurocode 5 draft (Design timber structures, part 1.1 "General rules and rules for buildings). In what follows, design of some structural elements according to our standards in use established on allowable stress design concept and to EC 5, is illustrated by numerical examples which in the best way show differences between these two concepts., U uvodnom delu ovog rada dat je kratki prikaz koncepta proračuna drvenih konstrukcija prema graničnim stanjima nosivosti i graničnim stanjima upotrebljivosti i to prema nacrtu evropskih propisa, tj. prema Evrokodu 5 (Proračun drvenih konstrukcija, deo 1.1: Opsta pravila i pravila za proračun zgrada). U nastavku, preko prikazanog brojnog primera, dat je konkretan proračun određenih konstrukcijskih elemenata prema Evrokodu 5 i prema našoj važećoj regulativi, odnosno konceptu proračuna na osnovu dopuštenih napona materijala, sto na najbolji način ilustruje razlike između jednog i drugog koncepta.",
publisher = "Univerzitet u Nišu - Građevinsko-arhitektonski fakultet, Niš",
journal = "Nauka + Praksa",
title = "Proračun konstrukcija velikih raspona od lepljenog lameliranog drveta prema graničnim stanjima",
pages = "29-24",
number = "6",
url = "https://hdl.handle.net/21.15107/rcub_grafar_41"
}

Stojić, D., Stevanović, B., Kočetov, T.,& Cvetković, R.. (2003). Proračun konstrukcija velikih raspona od lepljenog lameliranog drveta prema graničnim stanjima. in Nauka + Praksa
Univerzitet u Nišu - Građevinsko-arhitektonski fakultet, Niš.(6), 24-29.
https://hdl.handle.net/21.15107/rcub_grafar_41

Stojić D, Stevanović B, Kočetov T, Cvetković R. Proračun konstrukcija velikih raspona od lepljenog lameliranog drveta prema graničnim stanjima. in Nauka + Praksa. 2003;(6):24-29.
https://hdl.handle.net/21.15107/rcub_grafar_41 .

Stojić, Dragoslav, Stevanović, Boško, Kočetov, Tatjana, Cvetković, Radovan, "Proračun konstrukcija velikih raspona od lepljenog lameliranog drveta prema graničnim stanjima" in Nauka + Praksa, no. 6 (2003):24-29,
https://hdl.handle.net/21.15107/rcub_grafar_41 .