@misc{PartovPasternakPetkovetal., author = {Partov, Doncho and Pasternak, Hartmut and Petkov, Milen and Nikolov, Radoslav and Dimitrova, Antoaneta}, title = {About the history of orthotropic bridge decks}, series = {Annual of the University of Architecture, Civil Engineering and Geodesy, Sofia}, volume = {51}, journal = {Annual of the University of Architecture, Civil Engineering and Geodesy, Sofia}, number = {4}, issn = {1310-814X}, pages = {295 -- 311}, abstract = {Тhe development of steel bridges after the WWII is characterized by new constructive forms like: steel roadway closed sections, new static systems considering the roadway as a plate rather than a beam grid, new computational methods covering rod statics and statics of continuum, and determining the internal forces of the roadway as internal forces of an orthotropic plate. Moreover, the main girders, the roadway and the horizontal links connect statically and constructively in a whole monolithic structure. Thus, the construction follows better the real distribution of internal forces in steel structure. Loading possibility of high-quality steel material is well used, by which the economic effect of the construction increases significantly compared to the riveted old bridges. The application of this theory in Bulgaria in the period 1976 - 1992 allowed the Bulgarian bridge construction to build several unique by their size steel road bridges of steel orthotropic decks.}, language = {en} } @inproceedings{PartovPasternakGrekovetal., author = {Partov, Doncho and Pasternak, Hartmut and Grekov, Petar and Nikolov, Radoslav and Dimitrova, Antoaneta}, title = {About the Theory of Orthotropic Steel Plate Established by Wilhelm Cornelius and its Application for Analysis of Two Steel Bridges With Orthotropic Decks in Varna}, series = {X Jubilee International Scientific Conference „Civil Engineering Design and Construction", Sept. 20-22, 2018, Varna, Bulgaria}, booktitle = {X Jubilee International Scientific Conference „Civil Engineering Design and Construction", Sept. 20-22, 2018, Varna, Bulgaria}, pages = {469 -- 481}, language = {en} }