Earthquake Engineering. Construction Safety最新文献

{"title":"On the issues of criticism and further development of the national regulatory framework for the calculation of structures for seismic impacts","authors":"V.K. Vostrov","doi":"10.37153/2618-9283-2024-1-65-89","DOIUrl":"https://doi.org/10.37153/2618-9283-2024-1-65-89","url":null,"abstract":"A scientific analysis of the provisions of the studies [1–4] devoted to the critical analysis of the state of regulatory documentation on the calculation of structures for earthquakes has been carried out. In these works, it is argued that the developers of domestic standards made a serious methodological mistake when dynamic coefficients, rather than reaction spectra, were used when setting the initial seismic information. It is believed that in foreign norms, as well as in the monographs of famous foreign scientists, the ground parts of structures during earthquakes are not affected by any external forces. This incompleteness of representations is present in the equation of horizontal vibrations in translated and domestic works and monographs, but in them, unlike the analyzed works, it is not stated that during earthquakes the ground parts of structures are not affected by any external forces. The reasons for the inadequacy of mathematical models of the interaction of foundations and structures are revealed and the equations of translational and rocking plane-parallel vibrations of a rigid structure on a pliable base are given, clearly taking into account the effect of gravity.","PeriodicalId":137140,"journal":{"name":"Earthquake Engineering. Construction Safety","volume":"43 141","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140432808","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Reducing the dynamic impact of a landslide on buildings and transport structures in the village of Toktogul, Uzgen district of the Kyrgyz Republic","authors":"Mukhtar Ch. Apsemetov, A. E. Aidaraliev, Ulanbek T. Shekerbekov, Nurlan Kurmanbek uulu","doi":"10.37153/2618-9283-2024-1-31-48","DOIUrl":"https://doi.org/10.37153/2618-9283-2024-1-31-48","url":null,"abstract":"In the Kyrgyz Republic, there is a significant increase in landslide activity against the backdrop of ongoing climate change, especially in the southern mountainous regions of the country. The volume of soil during a landslide in this region can reach tens and hundreds of thousands of cubic meters, and in some cases more. The rate of landslide displacement ranges from several meters per year to several meters per second. The purpose of this study is to unload the landslide area to protect the population, roads and other structures of the village of Toktogul, Uzgen district of the Kyrgyz Republic. This landslide area was studied on the basis of field research on the ground and the results of desk work. The sliding of soil masses in the area can cause destruction and debris of residential and administrative buildings, roads and power lines, as well as injury and death. Considering the equilibrium of the system of forces acting on the subsidence soil mass of the slope section and analyzing them, measures for unloading the landslide body in this section are proposed. The proposed longitudinal profiles of drainage channels to reduce the moisture content of subsidence soil and transverse profiles of developed soil to reduce the weight of subsidence soil are presented. Based on the results of processing research data and analysis, it is recommended to reduce the weight of unstable (subsidence) soil by stepwise development along the slope of the site and transporting it up to 5 km for subsequent brick production. It is also recommended to protect subsidence soil from waterlogging by installing drainage channels. Based on the results of the research, a real project was developed to protect the site from landslides near the village of Toktogul. The proposed measures make it possible to reduce the risk of a landslide in the area under consideration using methods and technical means that are inexpensive and accessible to government agencies and local administrations.","PeriodicalId":137140,"journal":{"name":"Earthquake Engineering. Construction Safety","volume":"4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140433220","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Examination of industrial safety of structures of the continuous casting Department of the open-hearth shop of the Taganrog Metallurgical Plant","authors":"Mikhail I. Farfel, M. Gukova, D. Kondrashov, Lidiya S. Rozhkova","doi":"10.37153/2618-9283-2024-1-49-64","DOIUrl":"https://doi.org/10.37153/2618-9283-2024-1-49-64","url":null,"abstract":"The working draft of the main building of the department of continuous casting of billets (ONLZ) of the open-hearth shop of JSC Tagmet at the stage of \"KM\" was developed by the DKO of JSC UkrNIIPSK in 2000. Taking into account the design decisions taken and the need to ensure high reliability of structures arising from the specifics of metallurgical production (when installing a heavy duty crane (7K) with a lifting capacity of 225+63/20t at a significant height of the crane rail head – 27 m) in 2001, the customer (JSC Tagmet) decided to carry out an expert examination of design solutions for the main structures of the building frame and engaged the Central Research Institute of Building Structures named after V.A. Kucherenko, who, since 1995, has already conducted surveys of other workshops of the plant, built back in the XIX century, for this work. Then the correctness of the choice of sections and lengths of the elements of the main load-bearing structures was checked and the load-bearing capacity of these elements was assessed. The forces in the elements obtained as a result of carrying out a verification calculation on a computer with the refinement of the design scheme, the applied loads and the quality of steel used in the elements were used. The article presents the reasons for the conduct and results of the industrial safety examination carried out in 2011, a new department was put into operation by 2005, attached to the open-hearth shop.","PeriodicalId":137140,"journal":{"name":"Earthquake Engineering. Construction Safety","volume":"31 8","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140433345","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Consideration of the tail dependence of copula functions in the selection of combinations of natural hazards","authors":"Oleg V. Goryunov","doi":"10.37153/2618-9283-2024-1-8-21","DOIUrl":"https://doi.org/10.37153/2618-9283-2024-1-8-21","url":null,"abstract":"In accordance with the Federal rules and regulations of the Russian Federation (paragraphs 2.8, 2.9 of RR-064-17) and international standards (IAEA SSG-3), the OUAE (the object of the use of atomic energy) project should provide information on interrelated processes, phenomena and factors of natural origin identified during engineering surveys and studies, and the parameters of relevant combinations of external hazards are determined, for which an analysis of their impact on the safety of the NPP as part of the NPP design and beyond-design accidents should be performed. Combinations of hazards can have a stronger impact on the safety of the station than each impact considered separately, and the frequency of occurrence of the combination can be comparable to the frequency of occurrence of individual impacts. Currently, probabilistic approaches are not presented in the regulatory documents of the Russian Federation and international norms. The paper [1] presents a methodology based on the theory of copula functions, the practice of which has shown that the determination of the frequency and intensity of combinations is influenced by taking into account the empirical parameters of the distribution function: correlation coefficients, tail dependencies. The analysis of the effect of taking into account the value of tail dependencies on the result of choosing a model copula function within the selection of combinations of external natural factors that should be taken into account in the project of the OUAE is carried out. It is shown that the approach presented in [1] needs to be supplemented with an estimate of the value of the upper tail dependence based on statistical data, since due to a more complete application of the properties of copula functions, the depth of justification of the results increases.","PeriodicalId":137140,"journal":{"name":"Earthquake Engineering. Construction Safety","volume":"16 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140432440","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The use of the \"flexible floor\" effect in buildings of rigid structural systems","authors":"T. Belash","doi":"10.37153/2618-9283-2023-2-45-53","DOIUrl":"https://doi.org/10.37153/2618-9283-2023-2-45-53","url":null,"abstract":"Buildings of rigid structural systems with the inclusion of \"flexible floors\" in their designs are a well-known solution that has become widespread in many southern regions for the organization of summer rooms, recreation, sports, etc. At the same time, the \"flexible floor\" was located at the level of the first floor. This approach allowed not only to create comfortable living \u0000 \u0000@T.A. Belash, 2023 \u0000conditions, but also with its help it was possible to reduce seismic loads on buildings by \u0000increasing the flexibility of the entire building and improving its dynamic characteristics. In another constructive solution, the earthquake resistance of the building increases due to the location of the \"flexible floor\" in the uppermost part, while the \"flexible floor\" performs the role of dynamic vibration dampener. However, according to architectural and planning requirements, there is a need to use free spaces in the middle part of rigid buildings, which can also be implemented through a \"flexible floor\". Assessment of the seismic resistance of these buildings in seismic areas under impacts different frequency composition is of great importance for the safe operation of these facilities. Some of the results of this study are presented in this article.","PeriodicalId":137140,"journal":{"name":"Earthquake Engineering. Construction Safety","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122955883","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Amplitude-frequency characteristics of the \"structure–pile foundation\" layered model","authors":"V. Pshenichkina, V. Drozdov, A. Zhidenko","doi":"10.37153/2618-9283-2023-2-8-23","DOIUrl":"https://doi.org/10.37153/2618-9283-2023-2-8-23","url":null,"abstract":"Taking into account the interaction between a structure and the soil bed during an earthquake is a vital task of the seismic resistance theory. Despite a large amount of research, there is no satisfactory solution of this problem at the time being. The \"platform model\" applied in engineering practice can be used only for homogeneous soil beds. However, the surface stratum of soil, as a rule, has a multilayer structure, in which each individual layer has its own physical and mechanical characteristics determining the resonant properties of the entire system. The standard methods of analysis do not take into consideration the heterogeneity and layered nature of a soil bed using the averaged stiffness characteristics, which does not allow evaluating the specific features of resonance processes during the joint oscillation of a building and its soil bed. In addition, the dynamic characteristics of soils have a rather high statistical variability even within the same layer, and this can significantly affect the distribution pattern of the resonant frequencies of the system. \u0000The present article is aimed at investigating the dynamic response of the “building – multilayer soil bed” system based on the analytical model of a horizontal layered medium. \u0000The following tasks were solved: \u0000– an analysis of a layered system under the action of a complex sinusoidal signal was carried out with regard to damping; \u0000– the amplitude-frequency characteristics were constructed both for individual layers and for the system as a whole; \u0000– the influence of the statistical variability of the velocity of transverse seismic waves propagation on the resonant frequencies of the layered system under consideration was assessed. \u0000The analytical methods for the solution of the wave problem of seismology were used.","PeriodicalId":137140,"journal":{"name":"Earthquake Engineering. Construction Safety","volume":"88 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123231810","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Improving the operational reliability and safety of channels in precast concrete cladding on substandard aggregates","authors":"E. Vasilyeva, V. Fedorov","doi":"10.37153/10.37153/2618-9283-2023-2-67-78","DOIUrl":"https://doi.org/10.37153/10.37153/2618-9283-2023-2-67-78","url":null,"abstract":"The article is devoted to the problem of safety and reliability of water management systems. Most of these systems in the North Caucasus are in unsatisfactory condition, which leads to a rise in the groundwater level, salinization and contamination of adjacent lands, flooding of territories, pollution of places of residence and a decrease in the standard of living of the population. For the repair and restoration of systems and prevention of environmental damage to environmental components, by reducing filtration losses, both under normal operating conditions and under seismic impacts, precast concrete elements on inexpensive non-composite aggregates are proposed. Despite their (aggregates) relatively low quality and availability, concretes and trays, pipes and slabs made of it are characterized by a high resource-saving effect and meet the requirements of safety and reliability. This is achieved by adding a formiate-alcohol plasticizer to the concrete mixture, which has a super-liquefying effect that reduces the water consumption of the concrete mixture (water-reducing effect) and increasing the construction, technical and operational properties, including the reduction of seismic activity. The recommended proposals will significantly reduce the losses of water supplied to consumers, both in normal and extreme operating conditions, prevent flooding, pollution and waterlogging of adjacent territories, and improve the living conditions of the population.","PeriodicalId":137140,"journal":{"name":"Earthquake Engineering. Construction Safety","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128041100","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"On the issue of improving the seismic resistance of suspended buildings in areas of high seismic activity","authors":"T. Belash, I. Svitlik","doi":"10.37153/2618-9283-2023-1-54-66","DOIUrl":"https://doi.org/10.37153/2618-9283-2023-1-54-66","url":null,"abstract":"The widespread use of high-rise buildings was caused by the growing population of cities and the lack of land. As practice shows, the structural system of high-rise buildings with a load-bearing core is one of the most reliable. A variety of such buildings are buildings with suspended structures. This structural system has found application in many high-rise buildings around the world, including in seismically active areas. At the same time, such a constructive solution is rarely found in Russia. We have no recommendations on the use of this structural system, and there is also no information about the behavior of suspended structures with high seismic activity. The greatest interest in the study of buildings with a load-bearing core occurred in the 80s – 90s of the 20th century. It is worth mentioning a number of important advantages of the considered constructive system. First of all, these structures have significant flexibility, which leads to an increase in the natural period of oscillations and a decrease in the seismic load on the load-bearing elements. In some cases, suspended structures of buildings with a load-bearing core act as dynamic absorbers. This makes it possible to ensure the stability and reliability of the entire building without the use of special devices. This article presents the results of some studies conducted to use a structural system with a load-bearing core and suspended floors in seismic construction areas.","PeriodicalId":137140,"journal":{"name":"Earthquake Engineering. Construction Safety","volume":"8 Suppl 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130467407","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Experience of the examination of industrial safety of structuresof the open flyover of the slag yard of the open-hearth workshop of JSC TAGMET","authors":"M. Gukova, Lidia Rozhkova, M. Farfel","doi":"10.37153/2618-9283-2023-1-24-44","DOIUrl":"https://doi.org/10.37153/2618-9283-2023-1-24-44","url":null,"abstract":"Industrial safety expertise plays a huge role in preserving buildings and structures and preventing their destruction and undesirable consequences that are inevitable during the operation of damaged structures, especially in buildings with hazardous production or under heavy operating conditions of overhead cranes. Currently, due to the aging and wear of structures, the examination of industrial safety of buildings and structures is becoming increasingly important. Central Research Institute of Building Structures named after V.A. Koucherenko of JSC \"SIC \"Construction\" since 1995 for almost 20 years conducted surveys of the workshops of JSC \"Tagmet\", giving conclusions on industrial safety and recommendations for repairing and strengthening damaged building structures in order to enable and conditions for further safe operation. The article provides an example of successfully carried out work on the inspection of shop structures, which can be extended to modern practice. The article analyzes the results of a survey of the technical condition of structures, classifies damages and gives recommendations for ensuring the safe operation of structures of an open crane overpass.","PeriodicalId":137140,"journal":{"name":"Earthquake Engineering. Construction Safety","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132799987","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Certification of programs for the analysis of building constructions of nuclear energy facilities at Rostechnadzor","authors":"S. Nefedov, S. Shevchenko","doi":"10.37153/2618-9283-2023-1-44-53","DOIUrl":"https://doi.org/10.37153/2618-9283-2023-1-44-53","url":null,"abstract":"","PeriodicalId":137140,"journal":{"name":"Earthquake Engineering. Construction Safety","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129936335","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}