Scientific-practical conference: modelling and calculations for design purposes and the justification of seismic stability of buildings and constructions
OSR-2015 and OSR-2016 cards: comparative analysis and answer to the question what to apply?
Authors: Akbiev R.T.
Key words: score, studies, maps, methodology, methodological miscalculations, general seismic zoning (OSR), seismicity, earthquake intensity scale, MSK-64.
The report presents the results of the following types of research carried out by the author: a comparative analysis of the initial data taken in the preparation of OSR maps (97, 2015, 2016); Analysis of the content of these maps to identify inconsistencies, contradictions and deviations from the basic methodology (methodological miscalculations); The impact of such errors on the final result. As a result of the research, it was concluded that consideration of the issue of replacing OCP-2015 (updated version of OCP-97) on OCP-2016 maps is premature.
Problems of assessment of conformity of results of calculations
Authors: Kolesnikov A.V.
Key words: the calculation of seismic effects, the calculation of the maximum design earthquake, a report on the results of the report.
The report presents the experience in conducting of calculations for the seismic effects. The most frequently made errors in the calculations for seismic effects. Provides guidance on the preparation of a report on the results of the calculation for seismic forces.
Dynamic analysis of elastoplastic structures under seismic motions
Authors: Nazarov Yu. P., Simbirkin V.N., Panasenko Yu.V.
Key words: elastic-plastic design, dynamic calculations.
The report addresses the question of calculation of elastic-plastic structures under seismic effects. Presented the solution to the problem of determining the necessary forms and accounting contribution to the dynamic response discarded and undiscovered shapes
The calculation of the building with a kinematic seismic isolation
Authors: Ivanenko N.A.
Key words: seismic isolation, kinematic seismic isolation, kinematic support.
In this work the calculation of the building with a kinematic seismic isolation in Sochi with the use of kinematic supports system Kurzanova-Semenov on the patent, the sequence of casts shown the effectiveness of this system.
Features of calculation of buildings on seismic effects in LIRA 10.6 on the example of Rostov stadium arena
Authors: Evzerov I.D., Mkrtychev O.V., Jinchvelashvili, G.A., Kolesnikov A.V.
Key words: seismic resistance, special technical terms, unique structures, calculation of seismic influence.
The report addresses the question of calculation of structures, including unique, on seismic effects. The expediency of the use of direct methods of integration of differential equations with the use of accelerograms and using nonlinear finite elements.
Application of numerical methods of calculation of buildings on seismic effects in STARK ES SOFTWARE
Authors: Kurnavin V.V., Nazarov Yu.P., Poznyak E.V., Simbirkin V.N.
Key words: natural frequency, its own vibration modes, the calculation of the seismic effects.
The report addresses the issue of analysis of buildings and structures located in seismic areas. Presents an example of an optimal algorithm for computing the solution to the problem of finding its own forms and frequencies of fluctuations.
Development of theory and analytical methods of design of underground structures subjected to seismic actions
Authors: Antsiferov S.V., Sammal A.S., Deev P.V.
Key words: calculation of underground structures, mathematical modeling, seismic load.
The report examines the methods of calculation of underground structures to seismic effects using methods of numerical simulation. The examples developed in Tula state University methods of calculation of underground structures to seismic effects that have been used by design organizations when justifying design solutions for tunnels.
The development and application of HSR for the design of buildings and structures. Examples and typical errors that affect the quality of the calculations
Authors: Manin S.P.
Key words: special technical conditions (STU), errors, parameters, loads and impacts, accelerograms, design.
This paper considers the problem of development of special technical conditions (STU). Special attention is paid to analysis of the most common errors made by developers of STU.
Special features for solving dynamic problems in LIRA-SAPR, verification of such features
Authors: Gubchenko V. E.
Key words: dynamics, damping, system building-Foundation-base.
The paper describes new options in dynamic analysis of buildings and structures if analysis is carried out in LIRA-SAPR program. Such options include simulation of damping devices, account of damping by Rayleigh, simulation of soil bodies, solving nonlinear problems, generating response
spectrum diagrams, pushover analysis. Results of verification tests are also presented in the paper.
The main principles and the specifics of calculations of river engineering constructions under seismic loads
Authors: Bestuzheva A.S.
Key words: Dam, mode shapes, spectral analysis, the soil model, dynamic properties of materials, seismic waves, residual displacement.
The author explains the importance of the analysis of natural modes while calculating the seismic stability of dams, of taking into consideration the stages of construction, frequency of earthquakes, and the peculiarities of the structures» spatial functioning, of taking into account the propagation velocity of seismic waves at the base of the dam.
Computational methods of the buildings and structures due to seismic loads in SCAD Office
Authors: Mikhaylov V.S., Rusakov D.S., Yankovskaya I.D.
Key words: seismic building design codes, combination and reliability coefficients for special load combinations, industrial seismic loads.
Authors performed the review of the ways how the interpretation of principles of the modern seismic design codes of Russia could influence on the results of structural analysis for steel and concreate frame structures. Firstly, boundary conditions for special load combinations are demonstrated with the example of a steel industrial building. In the next place, authors describe a disputable method of unfactored loads usage in special load combinations with the example of multistory building reinforced concreate frame. For that purpose, an inquiry of the expert opinion from SRC STROITELSTVO had been made. In addition, the authoring team observes two evaluation methods for industrial seismic loads due to mining explosions: the method of equivalent earthquakes within spectrum theory and the forth integration of motion equations method for the function, that governs synchronic and asynchronic displacements of column supports.
Seismic action modeling. Bridge and building nonlinear dynamic analysis using seismic isolation system in Turkmenistan
Authors: Guzeev R.N., Polinkevich K.Y.
Key words: accelerograms of earthquakes, nonlinear dynamic calculations, the anti-seismic devices, seismic isolation.
The report discusses methods of modeling of seismic effects in the form of artificial accelerograms of earthquakes required to perform nonlinear dynamic analyses using seismic isolation systems. Examples of the calculation of bridge structures and residential buildings with the use of antiseismic devices. A critical analysis of modern standards for earthquake resistance.
Features of calculation of steel and concrete structures for dbe and sse in accordance with SP 14.13330.2014. Comparison with international standards
Authors: Semenov V.A., Lebedev V.L., Baglaev N.N.
Key words: design earthquake, maximum credible earthquake, limit equilibrium theory.
The report is developed based on the theory of limit equilibrium methods of solving problems of analysis of seismic response of inelastic systems, implemented in the program complex MicroFE. Is defined as the limit load, and the scheme of structural failure.
Seminar-meeting: the seismic stability of buildings and structures
On the principles of earthquake engineering for examples of ancient buildings
Authors: Kirikov B.A.
Key words: anti-seismic building, seismic protection, the examination of the effects of earthquakes.
The report presents information about earthquake-resistant construction in the ancient world and in our time. Given information about the examination of the effects of earthquakes. Examples of ancient structures that have suffered severe earthquakes.
Seismic isolation in seismic protection systems of buildings
Authors: Belash T.A.
Key words: seismic insulating foundations, elements of energy absorption (damping), frequency composition of seismic action, seismic protection parameters.
In modern seismic resistant construction, special seismic protection systems are widely introduced in the form of seismic isolation with the inclusion of energy absorption elements. The author considers the features of operation of these devices in seismic areas.
Designing of reinforcement of concrete to ensure the seismic safety of buildings and structures
Authors: Tikhonov I.N.
Key words: reinforced concrete design, seismic safety.
The report addresses approaches to ensuring safety and economy of structures made of reinforced concrete, including in seismically dangerous areas.
Seismic risk reduction activity in Tajikistan
Authors: Yasunov P.A., Khomidov D.Sh., Salomov M.M., Hokiev M.K.
Key words: earthquake, seismic risk, seismic stability, design, scientific and technical support, comprehensive survey, experimental studies, local building material.
The report presents the main activities to reduce seismic risk in Tajikistan, some of its results.
Vulnerability of buildings to seismic influences in Kyrgyz Republic
Authors: Begaliev U.T.
Key words: seismic activity, vulnerability assessment, information and communication technologies.
The territory of the Kyrgyz Republic is located in a zone of high seismic activity. Seismic influences can be an intensity of 8, 9 or more points.
Assessment of the vulnerability of buildings and structures to seismic influences in the Kyrgyz Republic carried out according to various international and domestic projects. If by the end of the last century the results of studies of buildings of the existing model building obtained, then after 2010, vulnerability assessment including new buildings carried out. Modern information and communication technologies used to implement the tasks of the projects.
Certification of buildings and structures in Almaty in order to ensure seismic safety
Authors: Shokparov E.M.
Key words: electronic passport, certification of buildings, seismic safety, risk reduction.
This paper examines the question of the generation of electronic passports of buildings and structures in Almaty in the framework of the definition of their seismic vulnerability. The aim of certification is to improve the reliability of functioning of life-support systems, reduction of damage to buildings and structures and reducing the loss of population from the devastating earthquakes.
The use of composite materials to increase the seismic stability of masonry structures of buildings during earthquakes
Authors: Granovsky A.V., Dzhamuev B.K.
Key words: large-scale model of building, brick masonry, dynamic load, vibration platform, hysteresis curve, composite, carbon ribbon and net.
The experimental study on evaluation of seismic resistance of the large-scale model of a two-storey fragment of brick building from ceramic bricks on cement mortar was conduct. The dynamic testing of the prototype was carried out on the two-component vibroplatform, where seismic impacts with the intensity of 6 to 9 according to MSK-64 scale were modelled. During the tests the constant load on floors — 450 kgf / m2 was simulated using concrete blocks. The dimensions of the two-storey fragment are 2,3×1,56×3,0 m. During the tests the horizontal and vertical dynamic forces to the prototype were simulated. Different options for strengthening of load-bearing brick walls with composite fabrics, scrims and nets, produced by JSC «NTSK» were consider. Upon the nature of the hysteresis curves the zones of elastic performance of masonry walls at the moment of cracks and destruction were determined. The optimal schemes of brick walls» strengthening were propos with the use of ribbons, scrims and nets from carbon cloth. The possibility to increase the stiffness of the slabs disk with composite materials was show.
Studying the dynamics of seismically isolated buildings with the aid of the stations of engineering seismometric service
Authors: Lapin V.A., Yerzhanov S.Y., Daugavet V.P.
Key words: seismic isolation, seismic stability, accelerogram, seismic station.
The report analyses instrumental records of the earthquake that took place on August 16, 2014 in Almaty on the building-analogue and 2 seismically isolated buildings. It concludes about the effect of seismic isolation.
Vibroprotection of buildings near undergrouhd railways
Authors: Dashevskij M.A., Motorin V.V., Sizov D.K., Shutovskij S.N.
Key words: vibroecology, metro trains, vibroprotection of buildings, upper railway halftie construction, rubber cover, spectral measuring method, efficiency, durability.
The complex of problems of urban vibroecology is considered, including: forecasting the level of vibration in buildings located near metro lines, calculating vibration insulators, designing and implimentation the vibroprotection of buildings, determining the durability of vibroprotection and vibroinsulation of the source of vibration — the upper structure of the track.
The application of the kinematic system of seismic isolation in Sochi
Authors: Semenov S.Yu.
Key words: seismic isolation, kinematic system, seismic isolation, dynamic test.
The report provides information on conducting field verification tests of residential buildings on the territory of greater Sochi, was built with the use of kinematic systems.
The purpose of the full-scale static and dynamic tests is the determination of the actual efficiency of the applied seismic isolation system with design data.
Seismic pads: from heuristic ideas to modern solutions based on phononic crystals
Authors: Kuznetsov S.V.
Key words: seismic pads, seismic waves, metamaterials, granular media.
The questions of application of seismic pads for buildings and constructions protection from bulk seismic P and S waves are analyzed. The historical analogues are considered, including the famous building of the Imperial Hotel in Tokyo. Prospects for the use of seismic pads providing high protective
properties and durability comparable to the life of the entire structure are noted.
Seismic protection of unique objects: modern requirements and implementation examples
Authors: Antonovskaya G.N., Rogozhin E.A., Kapustian N.K.
Key words: monitoring systems, seismic monitoring, technical progress.
The report substantiates the need to expand, regulatory monitoring systems, highlights the existing advanced methods of seismic monitoring.
Possibility of using carbon fibre in earthquake-resistant construction, problems and prospects
Authors: Gasiev A.A.
Key words: seismic stability, carbon fiber, static tests, dynamic tests, bearing capacity deficit.
The paper considers the possibility of using carbon fiber in earthquake-resistant construction. Based on the analysis of the data obtained during the experimental studies of the strength of brick structures reinforced with canvases from carbon fiber cloth, the static and dynamic loads simulating the seismic effect are proposed, and an algorithm for estimating seismic resistance of such structures is proposed.
Building system with spatial pylons and horizontal bed joints. Estimation of seismic resistance
Authors: Chervonobaba G.V., Shadrin V.V., Azaraev V.V.
Key words: seismic stability, spatial pylons, joints free bearing, seismic effects.
A constructive system with spatial pylons and horizontal bed joints with potentially high seismic stability was developed.
Establishment of a single model of information systems designed for city planning (on the example of the Republic of North Ossetia-Alanya)
Authors: Kanukov A.S., Zaalishvili V.B.
Key words: seismicity, information system, database.
On the basis of modern technologies information database on seismicity and seismic risks in information system designed for city planning is developed. System includes maps of detailed seismic zoning (DSZ) of North Ossetia-Alania and map of seismic microzonation (SMZ) of large settlements of the Republic.
Methods of assessment of potential social and economic losses of possible earthquakes of different intensities are considered and technique of seismic risk assessment is developed.
Innovative system for full seismic isolation of civil structures and buildings nuclear power plants built in areas of moderate and high seismicity up to 10 points per MSK-64 scale
Authors: Kostarev V.V., Vasiliev P.S., Nawrocki P.
Key words: optimum, 3D seismic isolation, box spring, viscous damper, VASO, the construction of the building of the nuclear power reactor.
The report discusses methods of optimization of a spatial 3‑component seismic isolation systems for nuclear power facilities and civil construction. The optimal parameters of the 3D seismic isolation for seismic source events received VASO, and the actual characteristics of the insulated structure. Designed and manufactured by 3D seismic isolation system on the basis of spring blocks heavy-duty and high-viscous dampers. Created a unique in the world practice stand SYSTEM full-scale tests of seismic isolation devices.
The use of composite materials based on meshes of carbon fibers for reinforcement of building structures
Authors: Simakov O.A.
Key words: composite materials, seismic strengthening, building construction, regulations.
The paper considers the question of the effectiveness of the use of composite materials based on meshes of carbon fibers for reinforcement of building structures. The tendencies of development of researches in the field of application of composite materials in the field of seismic reinforcement. A conclusion is made about necessity of development and approval of normative documents regulating this area.
Seismic and dynamic stability of hinged facades and translucent constructions
Authors: Chubakov M.J., Akbiev R.T.
Key words: translucent design, seismic stability, dynamic stability, regulations, and facade systems.
The report discusses the authors research on evaluation of seismic stability (dynamic stability) and hinged facade and translucent structures on the basis of tests.
Scientific school of earthquake engineering of the member of the Academy of sciences T. Zhunusov − yesterday, today, tomorrow
Authors: Yerzhanov S.Y., Lapin V.A.
Key words: earthquake engineering, seismic resistance.
2017 is the 90th anniversary of the birth of the academician T. Zhunusov — the founder of the Kazakhstan school of earthquake engineering. The phases of his activity and contribution to modern earthquake engineering are analyzed. The question of advanced studies by his students is covered. Earthquake engineering these days.
