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EFFECTIVE RISK MANAGEMENT SYSTEM IN THE DESIGN AND CONSTRUCTION
OF BIG TRANSPORT FACILITIES
EFFECTIVE RISK MANAGEMENT SYSTEM IN THE DESIGN AND CONSTRUCTION
OF BIG TRANSPORT FACILITIES
Vladimir V. Kosmin, PhD in Engineering, Moscow, Russia, vvcosmin@mail.ru
Alexander V. Kosmin, PhD in Engineering, Moscow, Russia, 6726289@gmail.comAbstract
Abstract. The evolution of the role of project insurance in the context of the application of the model of Integrated implementation of large-scale construction projects of transport is considered. The paper analyses the systemic disadvantages of the traditional approach to insurance, in which the insurer is involved at late stages, which leads to inflated insurance premiums, limited coverage and high financial uncertainty, especially critical for projects with a long cycle and unique risks of transport construction. The concept of early and active involvement of an insurance consortium (technical insurer and liability insurer) in the cyclical process of joint risk management in the context of the Integrated Construction project implementation model is described. It is shown that this approach allows the insurer to conduct underwriting based on transparent data, and the project team to receive more favourable conditions, access to specialized products (cyber insurance, parametric coverage of natural risks, cost overruns insurance) and expertise in the field of loss prevention. The implementation of such a model in pilot projects can form a new industry-specific approach to risk management in the specific conditions of transport construction, especially in relation to big facilities.
Keywords: nsurance of construction and installation risks, project insurance, risk management, transport construction tunnelling, underwriting
ASSESSMENT OF LOAD-CARRYING CAPACITY
OF BUILDING STRUCTURES BASED ON FIELD TEST RESULTS
ASSESSMENT OF LOAD-CARRYING CAPACITY
OF BUILDING STRUCTURES BASED ON FIELD TEST RESULTS
Sherali N. Valiev, PhD in Engineering, MADI, Moscow, Russia, ORCID: 0000-0001-6326-2233, Sh.Valiev@madi.ru
Igor S. Sukhov, PhD in Engineering, MADI, NITS MIS LLC, Moscow, Russia, ORCID: 0009-0007-8836-6566, sukhov.mosti@mail.ru
Vladislav A. Rakityansky, PhD in Engineering, MADI, NITS MIS LLC, Moscow, Russia, ORCID: 0009-0007-8836-6566, sukhov.mosti@mail.ruPostgraduate, MADI, Moscow, Russia, ORCID: 0009-0004-2864-6257, v.rktnsk@gmail.com
Abstract. The article is devoted to the assessment of the load-bearing capacity of building structures based on the results of field tests. In the context of modern safety standards, determining the load-bearing capacity of buildings and structures is of utmost importance. The authors analyze the methodological approaches to testing, from the selection of loads and methods for measuring deformations to the interpretation of data. Special attention is given to the influence of construction materials, geometry, and operational conditions on the correlation of results with theoretical calculations. The importance of a comprehensive approach (laboratory and field tests) for ensuring the reliability of objects is emphasized. The results of this work are useful for design engineers and specialists in structural mechanics and materials science.
Keywords: bearing capacity, building structures, calculated corrections, field tests, geometric parameters, laboratory studies, load capacity, loading factors, operating conditions, plastic deformations, prefabricated and disassembled floors, reinforcement of structures, structural materials
JUSTIFICATION OF THE ANGLE OF INTERNAL FRICTION
OF STABILIZED SOILS FOR CALCULATION OF PAVEMENTS
JUSTIFICATION OF THE ANGLE OF INTERNAL FRICTION
OF STABILIZED SOILS FOR CALCULATION OF PAVEMENTS
Mikhail G. Goryachev, D.Sc. in Engineering, Professor, MADI, Moscow, Russia, ORCID: 0000-0001-5414-7110, rudeger@rambler.ru
Artemiy A. Retunskiy, Expert, FAU "FCS", Moscow, Russia, retunskiy@faufcc.ru
Abstract. The absence of numerical values of the calculated mechanical characteristics of soils treated with stabilizers in the methods of designing pavements, both rigid and non-rigid, does not allow for an objective justification for the implementation of the technology of soil stabilization of the roadbed. The classification of stabilized soils by the index of direct bearing capacity and the California number (indicators that characterizing the bearing capacity of soils) is not adapted and not agreed upon for the Russian design of pavements. This article completes a set of proposals developed based on the results of analytical studies of the mechanical characteristics of complex stabilized soils. An analytical method for justifying the calculated values of the angle of internal friction of cohesive soils stabilized together with cement for calculating pavements for shear resistance is presented.
Keywords: angle of internal friction, calculation of pavements, design characteristics, sands, stabilized soils
PREPARATION OF CONCRETE MIXTURES IN WINTER CONDITIONS
PREPARATION OF CONCRETE MIXTURES IN WINTER CONDITIONS
Andrey P. Lupanov, PhD in Engineering, Professor, MADI, Moscow, Russia, abz4@abz4.ru
Victoria V. Rudakova, PhD in Engineering, Associate Professor, MADI, Moscow, Russia, ruvica@mail.ru
Vyacheslav V. Silkin, PhD in Engineering, Professor, Dorexpert LLC, Moscow, Russia, vvsilkin@mail.ru
Alexey S. Sukhanov, PhD in Engineering, Associate Professor, Dorexpert LLC, Moscow, Russia, dorexpert@yandex.ru
Alexey V. Silkin, Engineer, ABZ KAPOTNYA LLC, Dzerzhinsk, Moscow Region, Russia, alesilkin@yandex.ru
Abstract. The article is devoted to the production of concrete mixtures in winter conditions. It contains an overview and analysis of modern concrete mixing equipment for operation at low temperatures. Technological measures including heating of water and stone materials, as well as the use of chemical additives are considered. The analysis carried out can be useful for production organizations to prepare equipment and implement measures to ensure reliable production of concrete mixes at low temperatures in winter conditions.
Keywords: concrete mix, concrete mixing plant, sandwich panels, steam-gas mixture, stone materials
REINFORCEMENT OF ROAD SUBGRADE WITH GLASS PRODUCTION WASTE
REINFORCEMENT OF ROAD SUBGRADE WITH GLASS PRODUCTION WASTE
Alexander S. OstovAnatoly Y. Velsovsky, Postgraduate Student, Vologda State University (VSU), Vologda, Russia, ORCID: 0009-0001-8259-6033, ostovas@vogu35.ru
Anatoly Y. Velsovsky, PhD in Engineering, Associate Professor, Vologda State University (VSU), Vologda, Russia, velsovskiiaiu@vogu35.ru
Nurulla N. Gabibov, PhD in Engineering, Associate Professor, Vologda State University (VSU), Vologda, Russia, gabibovnn@vogu35.ru
Tatiana I. Anikina, Senior Lecturer, Vologda State University (VSU), Vologda, Russia, anikinati@vogu35.ru
Yulia A. Plotnikova, PhD in Physics, Candidate of Mathematical Sciences, Associate Professor, Department of Higher Mathematics, D.I. Mendeleev Russian University of Chemical Technology (RHTU), Moscow, Russia, japlotnikova@yandex.ru
Abstract. The paper addresses a pressing environmental and engineering challenge — the disposal of tar‑containing waste accumulated as a result of glass manufacturing operations at the glass plant in the settlement of Chagoda (Vologda Oblast, Russia). Due to the specific composition and density of these wastes, conventional backfilling methods have proven ineffective for decades. An innovative approach is proposed for the secondary use of tar waste as a binder material to reinforce local soils in road construction projects. This solution offers several key benefits: cost reduction in road construction: eliminates the need to transport construction materials over long distances (400–500 km); stabilization of soil mechanical properties: improves both strength and deformation characteristics of the soil, including under conditions of seasonal excessive moisture; minimization of frost heave: significantly reduces the potential for frost‑induced soil expansion.
Keywords: binding materials, frost heave, glass manufacturing, highway, road construction, soil reinforcement, subgrade, over‑compacted soil, resinous waste, soil stabilization, working layer of the subgrade
FIELD EXPERIENCE IN VISUAL CONDITION ASSESSMENT
OF CEMENT‑CONCRETE PAVEMENTS FOR ROADWAYS AND AIRFIELD SURFACES
FIELD EXPERIENCE IN VISUAL CONDITION ASSESSMENT
OF CEMENT‑CONCRETE PAVEMENTS FOR ROADWAYS AND AIRFIELD SURFACES
Sergey V. Ekkel, PhD in Engineering, Technologist, SMART CONSTRUCTION LLC, Moscow, Russia, eksvik@mail.ru
Abstract. The article is devoted to the experience of visual inspection of the condition of monolithic cement concrete pavements of highways and airfields in terms of assessing the possibilities of determining the causes of defects and the selection of materials and technology for appropriate repairs.
Keywords: defects, cause, instrumental inspection, monolithic cement concrete, repair, visual inspection
AN OVERVIEW OF STEEL AND POLYMER COMPOSITE RETAINING WALL ALTERNATIVESRoman N. Nikonorov
AN OVERVIEW OF STEEL AND POLYMER COMPOSITE RETAINING WALL ALTERNATIVESRoman N. Nikonorov
Roman N. Nikonorov, Master’s Degree holder, Chief Engineer, Scientific and Research Center of Tunnel Association; Lecturer, MGSU, Moscow, Russia, ORCID 0000-0002-0807-3787, nikonorov.rn@nizta.ru
Ulyana O. Moskovkina, Student, MGSU, Moscow, Russia, moskovkina.u@mail.ruStudent, MGSU, Russia, vova.konckov2004@yandex.ru
Vladimir A. Konkov, Student, MGSU, Russia, vova.konckov2004@yandex.ru
Abstract. Road construction projects involving routes with significant elevation changes traditionally use retaining walls as a technically and cost-effective solution. The choice of material and technology depends on the specific conditions of the project. Due to the modern development of construction technologies and the expansion in the range of available materials, the variety of design solutions has grown significantly. This article looks at options for retaining walls using sheet piling, both in the classic metal version and using composite materials.к управлению рисками в специфических условиях транспортного строительства, особенно в отношении крупных объектов.
Keywords: composite sheet pile, engineering protection, geotechnical solutions, improvement, numerical analysis, sheet pile fence, stability
ENSURING COST-EFFECTIVENESS IN THE DESIGN
OF PROTECTIVE GALLERIES TAKING INTO ACCOUNT SEISMIC EFFECTS
ENSURING COST-EFFECTIVENESS IN THE DESIGN
OF PROTECTIVE GALLERIES TAKING INTO ACCOUNT SEISMIC EFFECTS
Mashkhurbek Kh. Mekhmonov, PhD in Engineering, Associate Professor, Tashkent State Transport University, Republic of Uzbekistan, m.mehmonov90@mail.ru
Gulchehra A. Abduzhabarova, Consultant, LLC Qishloq Qurilish Invest, Tashkent, Republic of Uzbekistan, а.abdujabarov@mail.ru
Abstract. The article presents the design of an open-type avalanche-resistant gallery with an arched roof, which was developed for use in mountainous, seismically active areas. The proposed design ensures increased structural rigidity by effectively distributing internal forces within the arched system. When subjected to avalanche loads, the pressure is effectively redistributed, with the majority of the load being transferred to the retaining walls rather than the support columns, reducing the risk of localized overloads. A similar mechanism works in the case of seismic impacts: the arched shape helps to dampen high-frequency vibrations that occur during avalanches or earthquakes.
Keywords: active pressure, beam and arch coverings of galleries, foundation stress, retaining wall with buttresses, seismic forces, track rigidity
THE EFFECTIVENESS OF OVERPASSES CONSTRUCTION ON HIGH-SPEED RAILWAY LINES
THE EFFECTIVENESS OF OVERPASSES CONSTRUCTION ON HIGH-SPEED RAILWAY LINES
Boris A. Volkov, D. Sc. (Econ.), PhD in Engineering, Professor, Russian University of Transport (MIIT), Moscow, Russia, ORCID: 0000-0002-7776-1014, volkov-miit@yandex.ru
Andrey D. Zelentsov, Postgraduate Student, Russian University of Transport (MIIT), Moscow, Russia. ORCID: 0009-0005-7006-9622, kurt.sychev@yandex.ru
Abstract. The article presents a comparative study of two technologies for the construction of high-speed railways: on embankments and on viaducts. The analysis is carried out according to a set of criteria, including economic, social, technological and environmental aspects. The requirements for embankments for high-speed railways and methods of reinforcing foundations in difficult engineering and geological conditions are considered. The advantages and disadvantages of using overpasses are identified. The advantages of overpasses include a reduction in the area of the right-of-way, a reduction in the construction time, a reduction in the cost of operation, and other factors. The disadvantages include a high price, the inability to use them at separate points, and noise pollution. A methodology for assessing the economic efficiency of using viaducts based on the reduced construction and operating costs is presented. Based on the results of the comparison, the conditions determining the effectiveness of the use of viaducts are formulated. Viaducts are most effectively used in complex engineering and geological conditions to minimize environmental impact.
Keywords: embankment, high-speed rail, high-speed railway, longitudinal profile, roadbed, viaduct
CALCULATION OF A RIGID AIRFIELD PAVEMENT
USING THE COMPENSATING LOAD METHOD IN VIETNAM
CALCULATION OF A RIGID AIRFIELD PAVEMENT
USING THE COMPENSATING LOAD METHOD IN VIETNAM
Vladimir V. Tatarinov, PhD in Engineering, Associate Professor, MADI, Russia, tatarinov@madi.ru
Vo Tien Dung, Postgraduate Student, MADI, Russia, votiendung1989@gmail.com
Abstract. The potential application of the compensating load method (CLM) for rigid pavement analysis is explored. The method enables calculations to be performed for edge loading using a semi-infinite plate model, as applied to modern pavement structures and aircraft operating in Vietnam. Calculation results are presented for various aircraft types widely used in Vietnam, including the Boeing 747-400, Boeing 767-200ER, and Airbus 350-900.
Keywords: bending moment, elastic foundation, expansion joint, method of compensating loads, plate, rigid airfield pavemen
FEATURES OF ENGINEERING-GEOLOGICAL CONDITIONS OF THE SEVEROMUYSKY TUNNEL AREA
FEATURES OF ENGINEERING-GEOLOGICAL CONDITIONS OF THE SEVEROMUYSKY TUNNEL AREA
Sergey L. Filippov, Engineer, PoliEco LLC, Moscow, Russia, transport-stroy@mail.ru
Abstract. Engineering-geological conditions of the proposed route of the second Severomuysky tunnel are characterized by high seismicity, the presence of numerous zones of tectonic faults with disintegrated soils and significant levels of hydrostatic pressure. In seismically active areas, the complex of special surveys for the design of tunnels cannot be the same not only in different seismogenic zones, but also in the same seismic region, which must be taken into account during the construction of the second Severomuysky tunnel.
Keywords: earthquakes, faults, granites, groundwater, magnitude, power, points, seismic activity, Severomuysky tunnel, surveys
