33407 2304-6295 Construction of Unique Buildings and Structures 3 78 2019 1-49
RAR RUS 7-22 Peter the Great Saint Petersburg Polytechnic University Grigorian Eric grigoryan.ea@edu.spbstu.ru
Polytechnicheskay, 29
 Peter the Great Saint Petersburg Polytechnic University Surovenko Victor victorandmihas@mail.ru
Polytechnicheskay, 29
 Peter the Great Saint Petersburg Polytechnic University Semenova Marina masiandras@yandex.ru
Polytechnicheskay, 29
 Peter the Great Saint Petersburg Polytechnic University Kormalova Kseniia kkd_1996@mail.ru
Polytechnicheskay, 29
 Automated masonry method with evaluation of its productivity and quality characteristics The article presents the way of using articulated robotic manipulator with building a 3D printer for automation of brick masonry using traditional water-cement solution. The article describes in stages all the steps that need to be done with a robot manipulator in order to build a brick column, similar to the real one, without the use of hands. The column, according to preliminary data, must withstand a maximum load approximately equal to that which would withstand a column of the same material, but made by man. Later, the properties of 6 built brick columns are compared, half of which is built by a robot, and the other part – by a man. All advantages and disadvantages of the automated method of construction of stone structures are also considered. In the course of the work, such indicators as masonry time, structural strength, as well as their comparison with the indicators of structures erected by physical effort were revealed. 10.18720/CUBS.78.1 69 Building automation additive technologies small-scale models masonry robotic arm 3D-printer masonry quality building process technologies technologies of the future https://unistroy.spbstu.ru/article/2019.78.1/ 78_1.pdf
RAR RUS 23-45 57216910533 0000-0001-9935-9205 Riga Technical University Proskurovskis Arturs arprosk@gmail.com
Riga, Latvia
 57216911232 0000-0001-6383-6639 Peter the Great St. Petersburg Polytechnic University Nazinyan Levon Gaikovic nazinyan.lg@edu.spbstu.ru
St. Petersburg, Russian Federation
 Peter the Great Saint Petersburg Polytechnic University Tarasova Anna tarasova3.aa@edu.spbstu.ru
Polytechnicheskay, 29
 Saint-Petersburg State Polytechnical University Belyaeva Svetlana sbelaeva@gmail.com
Russia, 195251, St.Petersburg, Polytechnicheskaya, 29
 Energy-efficient expanded clay concrete wall block At the moment, the market of wall materials for low-rise cottage construction remains very conservative. People tend to erect the walls of cottages, using all the usual materials - wood (timber), brick, ceramic, gas concrete or aerated concrete blocks. At the same time, a relatively recently appeared technology of erecting walls of cottages with the help of a fixed formwork for concrete, which combines load-bearing, heat-insulating and enclosing elements at the same time. The aim of this work is to analyze the shortcomings of existing fixed formwork blocks and, taking them into account, create our own fixed formwork block, test its strength and heat transfer resistance, as well as analyze the above-mentioned characteristics and compare them with the most common energy-efficient wall materials for cottage construction presented on market of St. Petersburg. At the moment, the market of wall materials for low-rise cottage construction remains very conservative. People tend to erect the walls of cottages, using all the usual materials - wood (timber), brick, ceramic, gas concrete or aerated concrete blocks. At the same time, a relatively recently appeared technology of erecting walls of cottages with the help of a fixed formwork for concrete, which combines load-bearing, heat-insulating and enclosing elements at the same time. The aim of this work is to analyze the shortcomings of existing fixed formwork blocks and, taking them into account, create our own fixed formwork block, test its strength and heat transfer resistance, as well as analyze the above-mentioned characteristics and compare them with the most common energy-efficient wall materials for cottage construction presented on market of St. Petersburg. Comparison with the five most common energy-efficient materials showed that the designed block has a much higher R-value and one of the biggest values of compressive strength. In the future, it is planned to work out the composition of the material in detail, making it lighter and stronger. Besides that, it is planned to work out its shape, making the blocks convenient to operate. 10.18720/CUBS.78.2 69 expanded clay concrete expanded clay concrete blocks wall materials designing of a block fixed formwork testing of a block materials comparison; https://unistroy.spbstu.ru/article/2019.78.2/ 78_2.pdf
RAR RUS 36-49 A-6031-2013 6602229128 0000-0002-2930-5022 Peter the Great St. Petersburg Polytechnic University Stolyarov Oleg oleg.stolyarov@rambler.ru
29 Politechnicheskaya St., St. Petersburg, 195251, Russia
 57190865804 0000-0002-8136-3246 Peter the Great St. Petersburg Polytechnic University Olshevskiy Vyacheslav Ianushevich 79119199526@yandex.ru
St. Petersburg, Russian Federation
 Peter the Great Saint Petersburg Polytechnic University Dontsova Anna anne.dontsoova@gmail.com
Polytechnicheskay, 29
 Peter the Great Saint Petersburg Polytechnic University Demidova Yulianna +79819509154
Polytechnicheskay, 29
 Carbon fibers in bridge construction The paper discusses the possibilities of use of high-strength fibrous carbon materials (CFRPs) in the bridge construction. A comparative analysis of the mechanical properties of the main types of carbon fibers is carried out, alternative variants of high-strength fibers are considered. The characteristics of specific strength and stiffness of carbon composites are compared with characteristics of traditional structural materials. The tension capacity and elastic modulus of carbon fibers lie in a rather wide range. Despite the superiority of the elastic modulus of carbon fibers over the elastic modulus of a traditional material - steel - and alternatives (para-aramid fibers and high modulus polyethylene fibers), carbon fibers are more fragile and less resistant to bending. At the same time, in terms of specific indicators of strength and stiffness, CFRPs surpass almost all polymer and metal materials used in construction. According to this, the concept of application of carbon fibers in the bridge construction is presented in the study. 10.18720/CUBS.78.3 69 carbon fiber CFRP cable anchorage system bridge fiber https://unistroy.spbstu.ru/article/2019.78.3/ 78_3(1).pdf