Construction and Geotechnics

Frequency: Quarterly

Publisher: Perm National Research Polytechnic University, Perm, Russian Federation

DOI:  10.15593/2224-9826

Languages: Russian, English

Editor-in-Chief: Professor, Dr. Sci. Andrey B. Ponomaryov

Executive Editor: C.Sci. Dmitrii G. Zolotozubov

Editorial Contact:

Address: Editorial Board "Construction and Geotechnics", Russian Federation, Perm, 614990, Komsomolsky ave., 29
Phone: +7 (342) 2-198-377
E-mail: cgscimag@gmail.com 

Construction and Geotechnics  is an open-access periodical published scientific peer-reviewed journal.

Construction and Geotechnics has no article processing and/or article submission charges.

All Journal's Content, including articles,  is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License (CC BY-NC 4.0). Editorial of the Journal allows readers to read, download, copy, distribute, print, search, or link to the full texts of its articles and allows readers to use them for any other lawful purpose in accordance with Budapest Open Access Initiative's definition of Open Access.

Journal intended for researchers specializing and civil engineers in the field of construction, geotechnics, building technology, structural mechanics, transport construction, environmental engineering/

Until 2012, Journal was named «Bulletin of Perm State Technical University. Construction and Architecture», since 2012 to 2019 Journal was named «Bulletin of Perm National Research Polytechnic University. Construction and Architecture» (ISSN 2224-9826)

 

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Current Issue

Vol 11, No 4 (2020)

THE INNOVATIVE LABORATORY EQUIPMENT FOR ASSESSMENT OF A FROST HEAVE PHENOMENON OF THE SOILS
Korshunov A.A., Churkin S.V., Nevzorov A.L.

Abstract

The impact of the freezing-thawing process on soils, accompanied by frost heaving and changes of physico-mechanical properties and water permeability, leads to a decrease in the reliability of the designed structures such as dams, landfill caps, pavements. The existing apparatuses for the study of frost heaving are systematized according to their purpose (measured parameters), design features and experimental conditions. The authors pointed out the directions for improving laboratory equipment and presented developed innovative equipment for studying both the frost heave and its consequences. The article presents apparatuses for testing of frost-susceptible soils with the ability to manage the freezing front movement and water migration from the thawed to the freezing parts of soil. A laboratory equipment for studying the water permeability of soils along and across the ice lenses in subject to cyclic freezing and thawing is presented. Taking into account the dependence of criteria of frost-susceptibility of soils on experimental conditions, the authors propose a new approach to assessing the impact of frost heave phenomenon on designed structures. According to the approach the preparation of the laboratory research program and the analysis of their results are carried out using data obtained from numerical modeling both of the laboratory equipment and of the designed constructions.
Construction and Geotechnics. 2020;11(4):5-19
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ACCOUNTING OF SOLAR RADIATION IN NUMERICAL MODELLING OF THE THERMOPHYSICAL PROCESSES OF FREEZING AND THAWING OF PERMAFROST SOILS
Kudryavtsev S.A., Valtseva T.U., Kajarskii A.V., Kotenko J.I., Paramonov V.N., Sakharov I.I.

Abstract

The article considers options for stabilizing the thawing process of permafrost soil of railways during the reconstruction period. The analysis of the engineering and geological conditions made it possible to design rock cooling structures at this facility, which are berms and cover slopes of the subgrade with fractionated rocky soil. The technical characteristics of fractionated rock soil structures have been developed and tested in this cryological area and have shown their effective operation for more than 30 years. As a result of the operation of the railway embankment, permafrost degrades and its boundary is at different depths depending on local conditions and the condition of the drainage systems from the subgrade. The position of the upper permafrost boundary should be established during surveys, if it is not advisable to restore the frozen base to a depth of 10 m, it is necessary to strengthen the thawed weak base and create conditions for the consolidation of thawed soils. Geographic latitude determines zoning in the distribution of climate elements. Solar radiation enters the upper boundary of the atmosphere, depending on geographic latitude. It determines the midday height of the Sun and the duration of the radiation. The absorbed radiation is distributed more difficultly, since it depends on cloud cover, the albedo of the earth's surface, and the degree of transparency of the air. Zoning also underlies the distribution of air temperature. The temperature depends not only on the absorbed radiation, but also on the circulating conditions. Zoning in the temperature distribution leads to zoning of other meteorological climate values. The influence of geographical latitude on the distribution of meteorological values becomes more noticeable with height when the influence of other climate factors associated with the earth's surface weakens.
Construction and Geotechnics. 2020;11(4):20-32
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DESIGN OF REINFORCEMENT OF FOUNDATIONS OF RECONSTRUCTED, RESTORED BUILDINGS USING PILES
Polishchuk A.I., Semyonov I.V.

Abstract

The procedure for designing reinforcement of shallow foundations of reconstructed, restored buildings using piles (injection, bore injection, composite pressed, screw, etc.) is considered. At the first stage of the design, the constructive solution of the existing foundations, the structural diagram of the building (structure), as well as the loads transferred to the building structures before and after the reconstruction (restoration) of the building are established. An assessment of the soil conditions of the construction site of the building being reconstructed is carried out; a bearing soil layer is identified for deepening the lower ends of the piles. Based on the data obtained, the loading of the base of the foundations of the reconstructed (restored) building is assessed and the need for their strengthening (or their further operation without reinforcement) is established. In the event that strengthening of the building foundations is required, the method of transferring the additional load to the piles is chosen. After that, the bearing capacity of the piles and the design loads allowed on the piles are substantiated. The design of foundations is carried out taking into account their reinforcement with piles, as well as verification calculations of the base of reinforced foundations (combined) for the first and second groups of limiting states (for bearing capacity and deformations). In accordance with the regulatory documents, strength calculations of the main structural elements of foundations are performed, which are necessary to ensure their full-fledged operation, taking into account reinforcement. At the final stage, working documentation is developed to strengthen the foundations of the reconstructed, restored building (structure). The presented algorithm for the design of strengthening the foundations of reconstructed, restored buildings using piles allows to correctly and consistently organize the work of specialists.
Construction and Geotechnics. 2020;11(4):33-45
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STUDY OF THE NATURE OF THE WORK OF PILES WITH ROTARY ANCHORS WHEN WORKING IN AN ARRAY OF HEAVING SOILS
Kostina O.V., Bochkareva T.M.

Abstract

A new design of horizontal pivoting pile anchors used as supports for main pipelines on heaving and watered bases is proposed. The purpose of the design is to reduce the deformability of this type of Foundation and increase its load-bearing capacity under the influence of the forces of frost heaving of the soil. Stamp tests of models of piles with rotary anchors were performed on the stand for testing Foundation models of NPP GEOTECH. Based on the test results, the effectiveness of using piles with the location of their rotary anchors at one and two levels along the trunk was compared, and the reduction in the load-bearing capacity of the pile with an unfavorable location of the anchors was determined. It is shown that according to the results of stamp tests, the rotary anchors of piles positively affect the operation of the Foundation. The use of rotary anchors in one level increases the load-bearing capacity of the pile by 16 % and reduces shrinkage by 40 % compared to a pile of the same size, but without anchors. The use of anchors in two levels increases the load-bearing capacity of the pile by 73 % and reduces the draft by 48 %. The advantage of a pile with two levels of anchors compared to its own with one level of anchors is 48 % in terms of load-bearing capacity and 11 % in terms of draft. The use of rotary pile anchors can significantly increase the reliability of the foundations of main pipelines on heaving and watered bases. This design solution is more efficient than similar metal piles with vertical anchors at equal cost levels.
Construction and Geotechnics. 2020;11(4):46-57
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RESEARCH ON THE USE OF SELF-HEALING CONCRETE
Zhukova G.G., Saifulina A.I.

Abstract

Concrete is currently the main man-made structural building material. It takes on extreme loads, undergoes periodic processes of freezing and thawing, which affects its integrity and, as a result, the process of cracking is observed. A promising direction of development in improving the performance properties of concrete is the use of self-healing elastic concrete, which allows increasing the strength characteristics of the concrete structure and preventing corrosion of the reinforcing elements. The article discusses the technology for the production of self-healing concrete, indicates the necessary conditions for self-healing and defines the features of its application. Also, the calculation of production costs was made and the economic effect from the basic version of the production of self-healing concrete was calculated, the relationship between the service life and cost was determined using the correlation method. As a result of the work, it was confirmed that the new method of self-healing has the prospect of implementation and is more effective in places where the production of repair work, and regular inspection of the condition of structures, in practical terms, is impossible: underground construction, underwater construction, high-rise buildings, bridge-type transport structures. The use of self-healing concrete ensures the preservation of the bearing capacity of concrete and reinforced concrete structures, which significantly increases the service life without damage and equally helps to reduce additional material costs for maintaining the facility. The same research method revealed that bio-concrete with the use of Bacillus subtilis bacteria allows reducing the level of environmental pollution by minimizing hydrocarbon emissions during the preparation of the mixture.
Construction and Geotechnics. 2020;11(4):58-68
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THE MORTARS FOR DRILL-INJECTION PILES CREATION
Salnyi I.S., Pronozin Y.A., Bartolomei L.A., Kudomanov M.V., Naumkina Y.V.

Abstract

The article presents information about development of the composition of the mortars which are based on cement and sand-cement with the addition of a superplasticizing admixture for performing well crimping during drill-injection piles creation. The need to develop new compositions of the mortars was opened due to the discovery of some defects in the experimental drill-injection pile shafts which were created by using cement mortar with the addition of liquid glass, after their excavation and examination. These defects (massive soil penetration into the pile shaft near its wellhead and soil and mortar mixing along the perimeter of the piles) are takes place owing the insufficient mortar density, its high shrinkage and low strength. The developed compositions are free of these cons and have increased value of mortar key parameters (density, strength, shrinkage) which is too important during the drill-injection piles creations. After laboratory tests which were done to identify the optimal ratio of mortar components and determine their main parameters, control tests of these solutions were carried out on the investigation site to check the possibility of their use on existing technological equipment. Field tests of the developed mortars confirmed the possibility of their use for drill-injection piles creation. Using the developed compositions of mortars drill-injection piles were successfully performed for the foundation strengthening on some objects in Tyumen.
Construction and Geotechnics. 2020;11(4):69-80
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THE STATEMENT OF THE PROBLEM OF DEVELOPING THE METHODOLOGICAL BASES OF INFORMATION MODELING OF THE COST ESTIMATION PROCESS FOR THE OPTIMIZATION OF DESIGN WORK
Bukalova A.Y., Avdeeva K.V.

Abstract

The article is devoted to the justification of the relevance of the development of information modeling technologies in the construction industry. The article discusses issues related to the use of BIM technologies in domestic and foreign practice, and presents examples of objects constructed using BIM technologies. The analysis of the research subject area of information modeling, the relevance of the issue of using BIM technologies at the stage of design work and the development of estimate documentation, as well as algorithms, processes and methods for introducing information modeling into the practice of design work, it was concluded that the issue of using information technologies for optimization design work, cost management of construction investment project. The advantages and disadvantages of the developed technologies for applying BIM technologies at the current stage of the practice of developing construction projects are identified. A comparison of the traditional method of estimation documentation and the method based on the use of BIM-technologies is presented. As a result, the purpose and objectives of further research in this subject area have been formulated. Recently, the introduction of information modeling or BIM technologies (Building Information Modeling) is offered to increase the success of construction projects. Thanks to BIM-technologies, the solution to a huge number of tasks arising during the construction process is reduced. However, this technology is new in the construction industry, which leads to the emergence of a large number of contradictions associated with its implementation and application.
Construction and Geotechnics. 2020;11(4):81-93
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FULL-SCALE TESTS OF FLOOR SLABS OF LARGE-PANEL RESIDENTIAL BUILDINGS OF THE 97TH SERIES
Ponomarev A.B., Tat'yannikov D.A., Sazonova S.A., Suetin V.P.

Abstract

The authors consider objects of large-panel residential buildings, namely floor slabs, in this study. In view of the fact that the existing design of the slabs was carried out according to the old technical and regulatory documentation to comply with the requirements of modern regulatory documents «StroyPanelKomplekt» proposed new design solutions for the floor slabs of 97 series. The main design features of the slabs after the change in design solutions are: increased cross-sectional area of the working reinforcement (from 6 mm to 8 mm), increased concrete protective layer up to 25 mm. Therefore, before the start of mass production of these slabs, full-scale tests were carried out by «StroyPanelKomplekt» together with the department «Construction production and geotechnics» of PNRPU. The tested slab P3-6-501 is a floor element for large-panel residential buildings of the 97th series. The slab in the building is supported on four sides by internal and external wall panels, concrete design class B15. The design class of the working fittings is A400. During the tests, the indicators necessary for assessing the strength, stiffness and crack resistance, as well as the nature of destruction were controlled, including: the values of the loads causing the controlled limit state; product deflections; crack opening width. To measure the deflections, we used measuring instruments and instruments with a scale division of 0.01 mm, namely, 6PAO deflection meters. To measure the width of the crack opening during the tests, an MPB-2 microscope with a scale of 0.05 mm was used. The test results are presented in this article.
Construction and Geotechnics. 2020;11(4):94-105
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THE PENETRATION OF GROUND IMPROVEMENT INTO THE REALMS OF DEEP FOUNDATIONS
Varaksin S.

Abstract

Ground improvement as a means for allowing the replacement of piled foundations with shallow footings is systematically being used by engineers for many decades. Some ground improvement techniques that are installed by piling rigs and include cementituous columnar rigid inclusions makes it difficult to distinguish where ground improvement ends and deep piled foundations commence. This paper assists the geotechnical engineer by reviewing the concepts of rigid inclusions, how they differ with piles, and presenting of case studies of very deep applications of rigid inclusions.
Construction and Geotechnics. 2020;11(4):106-125
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