bluuebunny/crossref_metadata_2025_split huggingface dataset:
«Genius Loci» as a resource for the development of historical areas of the city
Authors: Stepanchuk Alena , Gafurova Svetlana , Latypova Maria 
Published: August 2020

AbstractThe article discusses the transformation of the concept of «genius loci», in the context of the reorganization of urban areas in the historical center of the city, reveals its tangible and intangible aspects. The concept of the brand of the territory is considered as an element of preservation and development of the identity of the urban environment. Territory, selected for the study, was the Admiralty settlement of Kazan, has a rich history and demands of reorganization. The conducted complex of studies revealed the problems and resources of the territory. The results of the study are a set of recommendations, taking into account the preservation of «genius loci» and the formation of the urban environment identity, tested on the territory of the Admiralty settlement. Recommendations include the functional saturation of the territory and the development of social service facilities, reconstruction and formation of a new living environment, the preservation of cultural heritage and the industrial areas reorganization with the formation in their place of modern cultural and creative quarters, forming a common landscape and recreational frame, and cultural brand of a territory.
Architectural peculiarities of the formation and development of the garden at the rodionovov institute of noble maidens in Kazan
Authors: Fazleev Marat , Minibaeva Alfiya 
Published: August 2020

Abstract
The article is devoted to the issue of protection and development of historical gardens in Russian educational institutions, since their current state is on the path to degradation. Most of the gardens in educational institutions lost their original appearance, garden fixtures and small architectural forms were lost and therefore there is an urgent need to preserve them.
The main results of the research consist in examining the historical aspects of Russian and foreign experience of designing and development of gardens within educational institutions and the possibility of applying this experience at present. Also, the results of the research consist in comparing and analyzing archival, iconographic and bibliographic materials after using the example of the garden at the Rodionov Institute of Noble Maidens in Kazan to identify the peculiarities of the planning structure, used location of buildings and architectural composition.
The significance of the obtained results consists in revealing the architectural and planning features of gardens at educational institutions, reviewing the list of buildings and structures located in these territories.
Interaction of clay soil components with portland cement and complex additive based on octyltriethoxysilane and sodium hydroxide
Authors: Vdovin Evgeniy , Mavliev Lenar , Stroganov Victor 
Published: August 2020

Abstract
Clay soils are widely used materials in various fields of science and industry in natural and modified form. The promising direction clay soils using in road construction is the use organosilicon compounds additives, which makes it possible to obtain hydrophobic and frost-resistant materials, as well as electrolytes, which gives high strength characteristics to clay soils strengthened by cement. To determine the interaction of soil and its components with complex additive based on octyltriethoxysilane OTES and sodium hydroxide SH, we tested the basic physical properties, strength and deformation characteristics of studied soil with complex additive, as well as the physicomechanical properties of kaolinite, montmorillonite, sand and silty-clay soil particles strengthened by Portland cement with the addition of OTES and SH. The use of OTES and SH additives led to increase the strength and frost resistance of kaolinite, montmorillonite, sand and silty-clay particles strengthened by cement.
Model of junctioning rigid and non-rigid road pavement
Authors: Chelushkin Ilya , Burhanuddinov Albert 
Published: August 2020

Abstract
The junction of sections on rigid and non-rigid road pavement is a source of severe load. In course of time residual strain causes the formation of subsidence in road surface. This is not significant defect of road pavement but it has a negative impact on driving comfort. This effect reveals itself not only for road pavement damaged by overloading. The unavailability of verification and quality control during work is not considered to be a reason of the problem. It is based on the internal physical processes that occur in the junction of sections on rigid and non-rigid road pavement under wheel loading. The issue under discussion in this article is related to the problem of the formation of non-rigid road pavement subsidence in the junction of sections of rigid and non-rigid road pavement. Subsidence at the junction of the pavement most often occurs in the area of bridge approach. The subsidence of the non-rigid road pavement can later lead to the formation of pits on the road. The reason for the formation at non-rigid road pavement subsidence is irregularities in the procedure, suffusion. It is necessary to consider the degree of impact not only of the amount of load from the wheel, but also its direction.
Composite helical micro pile’s bearing capacity
Authors: Vatin Nikolai , Ilizar Mirsayapov , Nurmukhametov Renat 
Published: August 2020

Abstract
It is proposed to use two options of piles’ bearing capacity calculation based on existing Russian codes. Calculation of pipe’s section for an axial load is proposed either. Results of these calculations are compared to the site tests made earlier. Comparison of test results with calculations makes clear that existing methods for helical piles calculation are too conservative. Calculated soil’s bearing strength is 6 times lower than test results. Calculation method of pipes’ FRP sections is proposed. Existing fiberglass section bears almost double of the soil’s capacity. Optimization is proposed. Research provides results of bearing strength installed to weak clay helical fiberglass micro pile. Pile was designed, produced and provided by Composite Group LLC. Pile is made with pultruded fiber reinforced polymer pipe and screw produced with cast iron. Screw is glued to the FRP pipe by epoxy. In addition rivets strengthen connection detail. This structure is stable for corrosion, ground electricity. FRP screw pile has small weight and high strength. All the benefits and disadvantages of the composite piles are described below.
Testing the superblock deck by dynamic loads
Authors: Stefurak Lyudmila , Stefurak Peter 
Published: August 2020

AbstractTyumen oil and gas industry province is being developed with the use of complete block construction. Especially increases the importance of building large blocks with installed equipment and superblocks on a floating mobile base. Styrofoam concrete is used to insulate the superblock deck. According to the developed methods, the adhesion strength of Styrofoam concrete to the superblock deck was tested and its characteristics for vibration resistance after the test were studied. The thermal characteristics of Styrofoam concrete used for superblock deck insulation are established, taking into account the vibration effects during transportation and operation. For testing, the deck fragment was installed in a climate chamber, and heat flow and temperature sensors were fixed to the surface of the fragment. As a result, it was found that dynamic loads reduce the resistance to heat transfer by 8-12 % due to the opening of cracks and the appearance of convective heat exchange. It is shown that the actual thermal resistance of the superblock deck with a thickness of 0.25 m and after exposure to dynamic loads remains at a sufficiently high level.
Connection of timber members
Authors: Kuznetsov Ivan , Gimranov Linur 
Published: August 2020

Abstract
Expanding applicability of timber structures, especially from engineered wood is a task of outmost importance due to wood’s replenishment properties as a material. This paper review new modification of mentioned above connections in lattice timber structures. This connection is comprised of timber members with longitudinal slot in combination with lateral round holes and steel plate with laterally welded-in rods which is inserted into the slot from the side of the timber member in direction of the holes axis. The distance between holes is equal to the distance between welded-in rods. Welded-in rods essentially work as dowels providing mandatory installation of tightening bolts laterally to the plane in which steel plate is located. The bolt holes in the plate can be larger or equal to the bolt diameter. This research focused primarily on the development of calculation methods for the described connection validated by finite element models analysis and experimental data.
Creating a node connection for scaffolding and studying its stress-strain state by means of a full-scale test
Authors: Derevyanko Evgeny , Shmelev Gennady , Khaidarov Lenar , Antonov Anatoliy , Galimullin Ilshat 
Published: August 2020

Abstract
The article presents the results of the analysis of the stress-strain state of the developed jointing node of construction scaffolding (spatial rod temporary structures), since nodal connections are often the weakest elements of such temporary structures. The analysis of the stress-strain state of the node was performed on the basis of a full-scale experiment. The study revealed the most stressed zones in the node structure, as well as the causes of node destruction. Nodes are well known to be the weakest elements of scaffolding. It often happens that structural elements are more stable than the connections between them. Mobile spatial rod structures are very popular in construction at the present time. These structures are used for the construction of ski jumps, stands, stages and scaffolding. They are also used as support scaffolding to support the formwork of floorings. Therefore, the development of new nodal solutions, increasing the bearing capacity of nodal joints and studying their stress-strain state under various loads is a very important task.
The role of shear span to effective depth ratio (a/d) on the deflection in deep and normal reinforced concrete beams when this ratio is (1, 2, 3, and 4)
Authors: Suleymanova Ludmila , Rimshin Vladimir , Ibrahim Amer , Hameed Adham A. , Obernikhin Dimitry 
Published: August 2020

Abstract
This research presents an experimental study to investigate the role of shear span-to-depth (a/d) ratio for the cross-sectional area of reinforced concrete beam on the deflection in reinforced concrete beams (deep and normal beams), when the value of shear span-to-depth ratio (a/d) equal to (1, 2, 3, and 4) respectively, the behavior of deep beams is significantly different from that of normal beams. Because of their proportions, deep beams are likely to have strength controlled by shear. The a/d ratio is to have a very significant role on the deflection where the values of a/d < 2 (deep beam) and the value of a/d > 2 (normal beam) according to (ACI 318-08) with the constant reinforcement ratio ρ The experimental program included casting and testing four beams with a constant width of cross section (b = 250 mm) and reinforcement ratio ρ. Also, all models of beams tested under two-point loads. The results showed that the percentage of average increasing in value of deflection in normal beam (a/d > 2) 1.68 % from value of deflection in deep beam (a/d < 2). Also, the gained deflection due to load in ranges from (10 to 110 kN) increase by (31.64 %) when a/d > 2 in TB1. moreover, the deflection due to load in ranges from (10 to 190 kN) increase by (21.28 %) when a/d < 2 in TB2. Furthermore, the gained deflection due to load in ranges from (10 to 360 kN) increase by (21.21 %) when a/d < 2 in TB3. as well as, in this research studied the role of shear span-to-effective depth ratio (a/d) on the crack width and the number of cracks.
Investigation of the influence of wind flow over the grandstand with a canopy
Authors: Galimullin Ilshat , Ippolitov Arthur , Shmelev Gennady , Khaidarov Lenar , Antonov Anatoliy , Cadyarov Ilya 
Published: August 2020

Abstract
The article deals with the investigation of the influence of wind flow over the grandstand with a canopy. Temporary stands with canopies are widely used for various entertainment events. The wind load is dominant for the structures of the stands with the canopy. The SP “Loads and impacts” presents the aerodynamic coefficients only for an open canopy. In the case of stands the nature of wind flow around the structure changes and the wind effect on the canopy structure changes accordingly. In this regard, it is necessary to clarify the wind load on structures of this type. The prototype object is a grandstand with a canopy. The study is performed in the ANSYS CFX software package using variations in wind flow speeds, canopy tilt, and the presence or absence of walls and other obstacles. During the study it was found that the grandstand and obstacles affect the wind pressure on the canopy. Also, quantitative comparison and analysis of the results show that peak pressures have a maximum deviation of the values of aerodynamic coefficients of 43 %.
Improving methods of strength design of normal sections of flexural concrete members reinforced with fiber-reinforced polymer bars
Authors: Mirsayapov Ilshat , Antakov Igor , Antakov Aleksey 
Published: August 2020

Abstract
Theoretical and experimental studies of the strength of normal sections of flexural concrete members reinforced with FRP bars have been conducted. The test specimens were concrete beams 1810 mm long, with a rectangular section of 120×220 mm, reinforced with two bars in the tensile area. The beams were reinforced longitudinally with steel, glass fiber-reinforced polymer (GFRP) and basalt fiber-reinforced polymer (BFRP) bars. The design methods of guidelines of Russia, the USA, Canada and the European Union have been considered. There are two approaches to the strength design of normal sections – the European and the North American. The approach used in the design method of the Russian guideline SP 295.1325800.2017, when all partial safety factors are used in calculating the design characteristics of materials, causes an overestimation of the boundary values of relative depth of the compressed region ξR
. It leads to an inaccurate determination of the failure mode and possible over-reinforcement of the construction. Some corrections have been brought about to the design methods of the Russian guideline SP 295.1325800.2017. Factor β has been introduced, which takes into account prestressing of the reinforcement. As a result, the deviation of the theoretical evidence from the experimental values of failure moments decreased from 30.44 % to 13.2 %. Changes have been made to the approach for the application of safety factors, which allowed increasing the accuracy of determining the failure mode and bring the safety factor for members C to the value of 1.6 adopted by the authors.
Features of stability loss of structures on an elastic foundation
Authors: Khusnutdinov Rustem , Konoplev Yuriy , Kayumov Rashit 
Published: August 2020

Abstract
The features of stability loss for some models of structures on the elastic foundation (e.g. ground) modeled using the Winkler’s foundation were researched. The first model of the structure is given in form of Mises’s truss. The second one is presented as the sloping arc stressed by horizontal load. The pressure related to the deformation was considered. Researches to see how system loses stability were made. In case of Mises’s truss, the solution is obtained in algebraic form. In case of arc the solution is represented in integral-differential form. Methods to solve them are suggested. Computational investigations are made. The method of getting the critical values for load was given. It was discovered that for the lengths big enough the stability loss is accompanied by the “crackling”.
The work of the tent fence on the shearing strength in light metal structures
Authors: Valeev Ildar , Shmelev Gennady , Khaidarov Lenar , Antonov Anatoliy 
Published: August 2020

Abstract
Over the past decades, the use of tent fences has increased significantly. Since the application of these materials is gaining great interest in use every year, sufficient experience in the design and research of tent fencing as part of structures has not yet been obtained. For structures with the use of tent fences, the research is aimed at studying the wind impact, and especially the joint work of the frame with the awning, their overall stiffness. Modern regulatory documents do not show a complete picture of the behavior of tent materials when they are included in the work of structural frames, so there is a need to analyze and study their behavior under the influence of wind load.
In this article, the work of the tent fence is considered, as well as a numerical study of the stress-strain state of light metal structures with a tent covering is performed.
Analysis of the causes of accidents of the VIPO 32-01 hydraulic lift
Authors: Khusainov Damir , Sibgatullin Marat , Salimov Aidar 
Published: August 2020

Abstract
With the development of technologies, the number of accidents related to construction machines in one way or another increases. The article deals with the analysis of the causes of accidents of the VIPO 32-01 auto-hydraulic lift. According to the results of engineering and technical expertise, the cause of the accident was a break in the connection of the two upper traction chains with anchor bolts fixed to the main section of the boom. During this break, there was a spontaneous movement of the third and fourth sections of the telescopic boom of the auto-hydraulic lift. The main reason for the lack of strength of anchor bolts of the upper traction chains according to the results of the research was the use of steel grades with insufficient strength characteristics in their manufacture. Material did not have sufficient load-bearing capacity in the cross sections of the eyes of anchor bolts intended for fastening chains, for the perception of the calculated forces in the traction chains.
Combined Plate-Pile Foundations Settlement Calculation Under Cyclic Loading
Authors: Mirsayapov Ilizar T. , Shakirov Marat I. 
Published: August 2020

Abstract
The purpose of the study is to develop a method for calculating the settlement of a combined plate-pile foundation, with taking into account the effect from the repetitive cyclic loads in the process of construction and operation of buildings and structures. Experimental researches on plate-pile foundations were conducted in laboratory tanks and the field in order to find basic laws of such foundations behavior at cyclic loading. A method has been developed for calculating the estimated subsidence of the soil base of slabs-piles, taking into account the complex stress-strain state in the system of “plate grillage-ground between the piles-ground base” under cyclic loading. The improved method for calculating the settlement of plate-pile foundations under the cyclic load action allows to increase reliability, design bearing capacity, reduce the settlement, and as a result to obtain more cost-effective design solutions by saving materials and time during the construction of this type foundations.
Development of nodal solutions for fixing cable ties in spatial rod structures
Authors: Zaynutdinov Aidar , Shmelev Gennady , Khaidarov Lenar , Antonov Anatoly , Sibgatullin Marat 
Published: August 2020

Abstract
The article presents the results of analysis of the stress-strain state of the developed new nodal solutions for fixing cable ties in collapsible spatially strained structures, since the existing nodal solutions are not intended for connecting cable ties. During operation under extreme conditions for the structure (sudden gusts of wind, dynamic effects), it is necessary to ensure the reliability of the nodal connections of the cable ties with the struts. It is also important to maintain the speed of building structures. The mentioned ideas influence on additional moments that worsen the work of the temporary structures node. Stress-strain state analysis of the original and newly developed node was performed on the basis of both computer modeling and natural experiment, the results were compared. In the course of the conducted research, the most stressed zones in the created nodes were identified, as well as the reasons for the destruction of newly created nodes.
Rebar movement in seals under static loading
Authors: Mirsayapov Ilshat , Minzianov Rustam 
Published: August 2020

Abstract
All the positive qualities of reinforced concrete as a building material are ensured mainly by the joint work of reinforcement and concrete. The forces ensuring the retention of reinforcement inside the concrete were called adhesion forces. We can say that adhesion is a combination of physical and mechanical phenomena along the contact surface of reinforcement and concrete, providing their connection and resisting the movement of reinforcement relative to concrete. To describe the real phenomena occurring in the embedment of reinforcement, the actual stress-strain state in concrete and reinforcement, a new calculation model is proposed that describes the actual mechanism of operation and failure of the embedment and methods for calculating stresses in concrete and reinforcement and displacements in the reinforcement. For this, as well as to develop methods for calculating the movement of reinforcing bars and the bearing capacity of the seal, a calculation model is proposed based on the splitting model of Professor A.S. Zalesov. To calculate the movement of reinforcement, a transformed three-line diagram of the deformation of concrete with a descending branch is proposed. Based on the developed calculation model and calculation methods, theoretical dependences are obtained for determining the displacements of the reinforcement of the bar in the seal and the bearing capacity of the reinforcement anchoring. Theoretical results are in good agreement with the experimental data of various authors.
Method for calculating endurance based on analytical deformations of concrete and reinforcement
Authors: Mirsayapov Ilizar T 
Published: August 2020

Abstract
The strength of reinforced concrete structures under repeated cyclic loads is determined by the strength of concrete or reinforcement, and depends on the conditions of their joint work, as well as the parameters and loading regime. Depending on many factors fatigue failure of the reinforced concrete bending element can occur from: exhaustion of the normal section resource due to fatigue rupture of the longitudinal main reinforcement, or fatigue failure of concrete in the compressed zone; exhaustion of the resource of inclined sections due to fatigue rupture of transverse reinforcement or fatigue failure of concrete over the vertex of the inclined cracks. The results of the study of the fatigue strength of bent reinforced concrete structures indicate that the most common failure occurs from the exhaustion of the fatigue resource of normal sections. To evaluate the fatigue resource of a normal section of a bending reinforced concrete element, a calculation method is proposed based on analytical diagrams of the concrete and reinforcement deformation. The proposed method of calculation makes possible to evaluate the resource of normal sections of bending elements under cyclic loading.