75504
2712-8172
Magazine of Civil Engineering
17
8
2024
1-90
RAR
RUS
13201-13201
B-6662-2019
57204916380
0000-0002-6877-8420
Peter the Great Saint Petersburg Polytechnic University
Kozinetc
Galina
galina4410@yandex.ru
St. Petersburg, Russia
Peter the Great Saint Petersburg Polytechnic University
Chechevichkin
Viktor
filter-w@mail.ru
Polytechnicheskay, 29
Peter the Great St. Petersburg Polytechnic University
Tryaskin
Mikhail
tryaskin_ma@spbstu.ru
St.Petersburg, Russian Federation
Peter the Great St. Petersburg Polytechnic University
Chechevichkin
Alexey
01@6400840.ru
29 Politechnicheskaya St., St. Petersburg, 195251, Russia
56296870100
0009-0007-3277-5037
Peter the Great St. Petersburg Polytechnic University
Yakunin
Leonid
yakunin_la@spbstu.ru
St. Petersburg, Russian Federation
Hydraulic operating features of filter cassettes as part of treatment facilities on highways
Surface runoff water (SRW) from highways is highly polluted and has negative impact on adjacent areas and water bodies. The article describes constructed wetlands (CW), including detention ponds and facilities for sorption post-treatment, one of the simplest methods to treat the SRW from highways. It is established that filter cassettes (FCs) based on gabion constructions (GC) and loaded with shungite rock (SR) are used as sorption post-treatment facility. One of the reasons for the unsatisfactory operation of such facilities on the St. Petersburg Ring Road (RR) has been analyzed. It is shown that the SR recommended for loading into FCs has a fractional composition of 2÷4 cm and thus provides a turbulent filtration mode of SRW passing through the facility. The impossibility of using SR with the optimal for sorption treatment fractional composition of 0.1÷0.3 cm within the existing GC is shown. It is also shown that the use of permeable for SRW containers – the filter cartridges (such as FOPS® filters) – is one of the simplest and most effective ways of using SR of optimal fractional composition and working with a large amount of sorption materials. The approach to the organization of complex multistage treatment of SRW is shown.
10.34910/MCE.132.1
628.3
surface runoff
shungite
filter cassette
hydraulic mode
filtration
https://engstroy.spbstu.ru/article/2024.132.1/
RAR
RUS
13202-13202
56296687300
0000-0002-2299-3096
Peter the Great Saint Petersburg Polytechnic University
Rybakov
Vladimir
fishermanoff@mail.ru
Polytechnicheskay, 29
56434340300
0000-0002-5694-1737
Peter the Great St. Petersburg Polytechnic University
Usanova
Kseniia
plml@mail.ru
St. Petersburg, Russia
57205082475
0000-0001-9735-9615
Sovbi, Ltd
Seliverstov
Anatoly
sovbitex@mail.ru
St. Petersburg, Russian Federation
Peter the Great St. Petersburg Polytechnic University
Kislitcyna
Alexandra
alexandra.ak.13@gmail.com
St. Petersburg, Russian Federation
Tsvetkova Anna
A.
anja.tsvetkova@inbox.ru
0000-0002-2908-4565
Peter the Great St. Petersburg Polytechnic University
Akimov
Stanislav
akimov_sv@spbstu.ru
St. Petersburg, Russia
Bearing capacity of lightweight steel concrete enclosure wall panels
The object of this study is lightweight steel concrete enclosure wall panels (LSCS panels) consisting of light gauge steal profiles and foam lightweight cellular concrete filling in general and, in particular, their fastenings. The purpose of this study is to develop a methodology for calculating enclosure wall LSCS panels with partial resting on floor slabs fastened with self-tapping screws of the Harpoon type. Methods. The experimental study of behavior of the sample of the LSCS panel fastened via galvanized plate with self-tapping screws to a metal tube, the rigidity of which is many times higher than the rigidity of the LSCS panel, from the action of a distributed load simulating wind pressure, is carried out. The density of foam concrete of the panel was measured during experiment and amounted to 370 kg/m3. Results. The methodology of calculating the bearing capacity of LSCS panel-to-slab fastenings is proposed and substantiated. The analytically calculated destructive load 28.25 kN is 9.3% less than experimentally obtained destructive load 30.9 kN. It is shown that the loss of load-bearing capacity of the panel happens due to bearing of the steel sheet of the web of the light gauge steel profile of the panel. It is shown that the rigidity of the LSCS panel fastenings varies from the one corresponding to the fixed-support calculation scheme to the one corresponding to the hinged-support calculation scheme. The behavior of the panel corresponds to the fixed-support calculation scheme before the load is 30% of the value, that gives the maximum allowable deflection, then the fasteners work as a finite stiffness support and turn into a plastic hinge when the load reaches 90% of the abovementioned load. It is proposed to use the hinged-support calculation scheme in design practice.
10.34910/MCE.132.2
69.04
легкие сталебетонные ограждающие стеновые панели
узлы крепления
несущая способность
самонарезающий винт
https://engstroy.spbstu.ru/article/2024.132.2/
RAR
RUS
13203-13203
1017359
0000-0001-8953-9309
North-Eastern Federal University
Vasileva
Elena
vasilyeva_edm@mail.ru
Yakutsk, Russian Federation
0000-0001-9639-7601
V.P. Larionov Institute of the Physical-Technical Problems of the North of the Siberian Branch of the RAS
Popov
Dmitry
dmiitryy09@gmail.com
Yakutsk, Russia
54882166900
0000-0003-2004-6631
North-Eastern Federal University
Vinokurov
Pavel
pv.vinokurov@s-vfu.ru
Yakutsk, Russian Federation
57207737267
0000-0002-7829-6839
Institute of Oil and Gas Problems of Siberian Branch of the Russian Academy of Sciences
Popov
Aleksandr
surrukin@gmail.com
Yakutsk, Republic of Sakha (Yakutia), Russia
Electrically conductive cement composites modified with weakly oxidized graphene
This study investigates the influence of graphene on the electrical conductivity and mechanical properties of concrete composites, aiming to develop advanced materials for structural applications. Graphene’s exceptional electrical conductivity can significantly enhance inert concrete matrices by forming a conductive network. Concrete samples were prepared with minimally oxidized graphene (MOG) at 0.2 and 0.5 % by weight of cement. Spectroscopic techniques, including Raman and infrared spectroscopy, were employed to characterize the interaction between graphene and the cement matrix. Results showed that the addition of MOG reduced electrical resistivity, with the 0.2 % sample decreasing from approximately 600 to 550 Ohm under compression. The yield point was around 40–50 kN, with a sharp decline in resistivity at this load. Compressive strength tests indicated a 48 % increase in strength with just 0.05 % graphene oxide. These findings suggest that graphene incorporation enhances both electrical conductivity and mechanical strength, making the composites suitable for applications in structural health monitoring and self-heating systems.
10.34910/MCE.132.3
639.42:539.42
сoncrete
cements
compressive strength
Portland cement
composite materials
multi-layer graphene oxide
cement composite
dispersion
self-diagnostics.
https://engstroy.spbstu.ru/article/2024.132.3/
RAR
RUS
13204-13204
0000-0002-6113-1237
Universiti Malaysia Pahang Al-Sultan Abdullah
Shen
Ng Jun
jshenng98@gmail.com
Pekan, Pahang, Malaysia
49361423900
0000-0002-2700-236X
Universiti Malaysia Pahang
Hasan
Muzamir
muzamir@ump.edu.my
Pahang, Malaysia
Universiti Malaysia Pahang Al-Sultan Abdullah
Anuar
Nurrul Nisya
nurrulnisyaanuar@gmail.com
Pahang, Malaysia
Construction of coconut shell column for the enhancement of expansive soil
The authors used the crushed coconut shell to make granular columns which were obtained from the market area of Kuantan, Pahang. The coconut was crushed into a similar size of coarse aggregate for the replacement of non-renewable resources like sand and gravel. From its general properties, a coconut shell is hard and can withstand a certain value of exerted value regardless of compression or tension. Besides, the coconut shell is an agricultural product and is found abundantly after human consumption. For this research, the stone-column method was used. The installation of a single coconut shell column was implemented through the vibro-replacement technique on the soft clay soil. Before accessing the shear strength parameters, the evaluation of the physical and mechanical properties of coconut shells and kaolin was executed via the appropriate geotechnical laboratory approaches. The shear strength parameters were analysed with the control and reinforced specimens through the unconfined compression test (UCT). For the shear strength value, the average value from 4 specimens was utilized as the final value. A total of 16 samples were constructed for all the specimens, reinforced design comprised of 13 mm column diameter, and column heights of 60 mm and 80 mm were categorized as partially penetrated columns while 100 mm was a fully penetrated column. The highest shear strength improvement was recorded when the column height was 100 mm, resulting in 28.51 %, whereas the least was recorded when 60 mm of height was constructed, only 17.28 %. Conclusively, the positive results of shear strength improvements were yielded by the utilization of coconut shells and proved that it was practical and economical.
10.34910/MCE.132.4
691.1
expansive clay
coconut shell
ground improvement
shear strength
foundation
stiffness
experimental investigation
sustainable development
reinforcement
https://engstroy.spbstu.ru/article/2024.132.4/
RAR
RUS
13205-13205
0000-0003-1486-593X
Belgorod State Technological University named after V.G. Shukhov
Panchenko
Larisa
Panchenko.bstu@mail.ru
Belgorod, Russia
0009-0002-3003-9988
National Research Irkutsk State Technical University
Druzhinina
Tatyana
druzhininairnitu@mail.ru
Irkutsk, Russian Federation
Energetic basis in rational constructions projection
The theory of designing rational load-bearing structures from the standpoint of strength, durability, manufacturability, and material consumption has too much of an energy basis. New variational principles operate at all levels of designing the configuration of load-bearing structures: topology, geometry, parameters of elements with parallel selection of materials. They can also be used for rational distribution of load on the structure. The study examined the foundations of new variational principles of synthesis of supporting structures with the content of an objective criterion of optimality of their practical application. Based on this, a rational energy principle was selected in the design of supporting structures, as well as algorithms for the development of rational systems focused on software design. The obtained dependencies as a result of the study allow to obtain a rational solution in strength, durability, manufacturability, and material consumption, which in turn helps to reduce the cost of construction of buildings and structures, as well as the costs of their reconstruction. Also, the proposed algorithms for the development of rational systems are aimed at software design.
10.34910/MCE.132.5
539:519.3:624.04
ecologic approach
industrial problems
durability
load-bearing structures
variational principles
configuration
material module
https://engstroy.spbstu.ru/article/2024.132.5/
RAR
RUS
13206-13206
B-6662-2019
57204916380
0000-0002-6877-8420
Peter the Great Saint Petersburg Polytechnic University
Kozinetc
Galina
galina4410@yandex.ru
St. Petersburg, Russia
Peter the Great St. Petersburg Polytechnic University
Badenko
Vladimir
vbadenko@gmail.com
St. Petersburg, Russia
55101174500
0000-0001-8650-2375
Peter the Great St. Petersburg Polytechnic University
Sharapov
Dmitry
sharapov.dm@gmail.com
St. Petersburg, Russian Federation
57210564892
0000-0001-5292-7295
Peter the Great St. Petersburg Polytechnic University
Shonina
Ekaterina
shonina_ev@spbstu.ru
St. Petersburg, Russia
Loads on hydraulic engineering and berthing structures of the coastal zone of the Neva Bay
The object of the research is the hydraulic structures in the Neva Bay, including ports, dams, and navigation facilities, which are subjected to natural loads such as ice, wave, wind, and water level fluctuations. The study focuses on analyzing the impact of these forces on the stability and safety of these structures. The research is of high relevance due to the increasing challenges posed by climate change, which alters hydrological and ice conditions, and the growing human activity in the region that places additional pressure on the bay's ecosystem and infrastructure. The analysis of natural loads is crucial for the design of resilient structures that can withstand extreme weather events and maintain safe operations in the Neva Bay. The goal of the research is to assess the natural loads on hydraulic structures in the Neva Bay, providing reliable calculation methods for their impact. The tasks include analyzing the ice regime, wave and wind loads, and utilizing modern modeling techniques to develop optimal design solutions for these facilities. The results demonstrate that ice and wave loads significantly affect the safety of hydraulic structures in the Neva Bay, and appropriate measures, such as protective piers and icebreaker assistance, can mitigate these impacts. The research provides valuable data for the design of durable and resilient infrastructure in the region, accounting for the specific natural conditions of the Neva Bay.
10.34910/MCE.132.6
532.517
Neva Bay
hydraulic structures
wave load
ice load
wind load
pontoons
mooring system
information model
https://engstroy.spbstu.ru/article/2024.132.6/
RAR
RUS
13207-13207
Mustansiriyah University
Hacheem
Zuhair Abd
zuhairabd@uomustansiriyah.edu.iq
Baghdad, Iraq
Mustansiriyah University
Al-Khyat
Sahar
saharalkhyat@uomustansiriyah.edu.iq
Baghdad, Iraq
Mustansiriyah University
Saeed
Khitam Abdulhussein
khitamhussein@uomustansiriyah.edu.iq
Baghdad, Iraq
57210104575
0000-0001-5831-297X
Mustansiriyah University
Fartosy
Sabah Hassan
dr.sabah77@uomustansiriyah.edu.iq
Baghdad, Iraq
Stability of gypseous soils slopes stabilized with cutback asphalt and lime using the finite element method
Gypseous soils are widely distributed all over the world, particularly in Iraq. These soils exhibit unpredictable behaviour including losing strength and collapsing upon wetting. Treatment of gypseous soil is necessary to improve its geotechnical properties and assess its potential applications in engineering practices. Compacted gypseous soil samples stabilized with different binders, including cutback asphalt and lime. Slope stability analysis was performed to determine the factor of safety and analyze the behaviour of the stabilized gypseous soil. ADONIS 3.25, a computer program based on the finite element method, was used to characterize the gypseous soil and to analyze the slope stability by Mohr–Coulomb failure criteria and visco-plastic algorithm. The effects of varying the percentages of binders and the slope angle (H:V) were investigated. A total of thirty numerical analyses were performed. Results of the numerical analysis indicated that the best slope stability was obtained when the gypseous soils stabilized with 4 % cutback asphalt and 3 % lime at a slope angle of 3H:1V. It was also observed that the slope angle has a considerable effect on the safety factor of the slope, such that, the steepest the slope angle – the lowest the safety factor.
10.34910/MCE.132.7
624
factor of safety
slope stability
binders
bituminous soil stabilization
ADONIS
https://engstroy.spbstu.ru/article/2024.132.7/
RAR
RUS
13208-13208
0000-0002-1180-558X
V.G. Shukhov Belgorod State Technological University
Suleimanova
Lyudmila
ludmilasuleimanova@ya.ru
Belgorod, Russia
Belgorod State Technological University named after V.G. Shukhov
Maslennikova
Alina
alinakoryakina.arch@gmail.com
Belgorod, Russian Federation
0009-0009-8618-2952
Belgorod State Technological University named after V.G. Shukhov
Kravchenko
Darya
darya.levshina@mail.ru
Belgorod, Russian Federation
National Research Tomsk Polytechnic University
Martyushev
Nikita
martjushev@tpu.ru
Tomsk, Russian Federation
M-6585-2013
6508103761
0000-0002-1196-8004
Peter the Great Saint Petersburg Polytechnic University
Vatin
Nikolai
vatin@mail.ru
Polytechnicheskay, 29
57189716281
0000-0003-3287-3298
Moscow State University of Civil Engineering
Karlina
Antonina
karlinat@mail.ru
Moscow, Russia
Ensuring uniform brightness of the afterglow surface of the hardened cement paste with photoluminescent pigment
The elevated standards for architectural and artistic expression, pivotal in enhancing the livability of urban landscapes, are significantly influenced by the innovative characteristics of materials employed in landscaping features and minor architectural structures. This paper delves into the influence of the particle size distribution of photoluminescent pigments on the quality of afterglow observed on the surface of hardened cement paste. Utilizing a method of computer image analysis, the study scrutinized samples with diverse compositions containing varying proportions of photoluminescent pigments. The principal aim of the investigation was to evaluate the uniformity of afterglow luminosity across the surface of hardened cement paste integrated with photoluminescent pigment. Experimental results revealed that the pigment fraction measuring 100-110 μm demonstrated superior uniformity and longevity of afterglow, while maintaining the integrity of the hydration processes within the cement matrix. In contrast, fractions sized 30-40 μm and 180-190 μm exhibited a diminished uniformity in the dispersion of light spots on the surface of hardened cement paste by 79% and 88%, respectively. This discrepancy can be ascribed to variations in the quantity of particles capable of photoluminescence and their distribution within the volume of the cement matrix.
10.34910/MCE.132.8
624.074.433
afterglow brightness
photoluminescent pigment particle size s
hardened cement paste
uniformity
particle size distribution
light emission stability
hydration processes
decorative concrete
luminescent properties
https://engstroy.spbstu.ru/article/2024.132.8/