scholarly journals A critical assessment of domestic and foreign temporary vertical regulatory loads on road bridge structures, a way to eliminate their identified shortcomings

2019 ◽  
Vol 6 (3) ◽  
Author(s):  
Pavel Salamahin ◽  
Ilya Reshetnikov
Keyword(s):  
Carrying Capacity ◽  
Road Traffic ◽  
Load Capacity ◽  
Regulatory Documents ◽  
Combined Loads ◽  
Bridge Structures ◽  
The Usa ◽  
The Russian Federation ◽  
Uniformly Distributed Loads ◽  
Economic Considerations

The article critically assessed temporary vertical standard combined loads on road bridges in Western European countries, the USA and Russia. They are set with constant values of the parameters of their uniformly distributed loads and loads on the axles of trucks without regard to the composition of road traffic and out of communication with the length and shape of the lines of influence of force and deformation factors in the elements of bridge structures and are used in these and in many other countries in road bridge structures engineering and design. It is shown that the bridges constructed with different spans on the same road are designed to have different and unknown for designers, engineers and facility managers load capacity, which decreases when the length of the spans increases more than twice, but that is unacceptable for operational and economic reasons. The author found that the use of regulatory documents of other countries as a model for the modernization of domestic standards is unacceptable due to economic considerations. The article assesses the carrying capacity of such bridges as: the Crimean bridge and the Bugrinsky bridge in Novosibirsk. It is shown that these structures, in case of compliance with the requirements of modern regulatory documents of the Russian Federation, do not allow for the passage of columns of vehicles weighing more than 25–27 tons in a state of congestion. The ways of eliminating the identified deficiencies of these combined regulatory loads are indicated. The results of calculations are presented, indicating that a further increase in the parameter K of the AK load to large values is not an effective way of ensuring the required carrying capacity of bridge structures.

scholarly journals Особенности деформаций главных балок железобетонных пролетных строений автодорожных мостов при их усилении внешней арматурой

2020 ◽  
Vol 44 (3) ◽  
pp. 151-158
Author(s):  
S. Tomilov
Keyword(s):  
Carrying Capacity ◽  
Load Capacity ◽  
Reinforced Concrete Beams ◽  
Main Beam ◽  
Relative Deformation ◽  
Operational Parameters ◽  
The Road ◽  
External Reinforcement ◽  
Bridge Structures ◽  
High Degree

Так как в настоящее время в эксплуатации находится достаточно много автодорожных мостов, запроектированных и построенных в различные периоды, их, как и всю дорожную сеть, необходимо поддерживать в состоянии, соответствующем нормативам, а для этого проводить ремонт с использованием элементов усиления несущих конструкций. При качественном возведении и надлежащем уходе высокая степень сохранности мостов позволяет продлить срок их службы путем решения ряда конструктивных вопросов, наиболее актуальным из которых считают обеспечение нормативной грузоподъемности. Усиление с целью повышения грузоподъемности эксплуатируемых мостов достигается путем добавления элементов внешних или внедренных в состав существующего конструктива в зависимости от типа сооружения, его состояния и доступной технологии производства. Однако не только грузоподъемность, но и подверженность конструкций деформациям определяет транспортно-эксплуатационные параметры сооружения, характеризующие послеремонтное состояния моста. Цель настоящего исследования – анализ известного и широко востребованного способа усиления железобетонных балок внешним армированием как обеспечивающего минимальное вмешательство в существующие основные конструкции, технологичного и доступного в исполнении. Впервые дана оценка влияния стадийности включения в работу элементов усиления на общие деформации – прогибы главных балок. Ключевые слова: главная балка, грузоподъемность, усиление, внешняя арматура, свободная затяжка, стадийность работы, относительная деформация, прогиб. Currently, there are quite a lot of road bridges in operation, designed and built in different periods. It is necessary to maintain the road network including bridge structures in a condition that meets up-to-date standards, and for this repair should be carried out using reinforcing elements of the supporting structures. With high-quality construction and proper maintenance, a high degree of safety of bridges allows to extend their service life by solving a number of design issues, the most important of which is considered to be the provision of standard load capacity. Strengthening in order to increase the carrying capacity of operated bridges is achieved by adding elements external or incorporated into the existing structure, depending on the type of structure, its condition and available production technology. However, not only the carrying capacity, but also the susceptibility of structures to deformations determines the transport and operational parameters of the structure, which characterize the post-repair state of the bridge. The purpose of this study is to analyze the well-known and widely demanded method of reinforcing reinforced concrete beams with external reinforcement as providing minimal interference with the existing basic structures, technological and affordable in execution. For the first time, an assessment of the influence of the staging of the inclusion of reinforcement elements in the work on the general deformations – deflections of the main beams. Keywords: main beam, carrying capacity, reinforcement, external reinforcement, free rod, staging of work, relative deformation, deflection.

scholarly journals WORKS ON BRIDGE REINFORCEMENT ON THE ROAD N2

2019 ◽  
pp. 631-635
Author(s):  
Naser Morina
Keyword(s):  
Carrying Capacity ◽  
Road Traffic ◽  
Load Capacity ◽  
The State ◽  
Design Criteria ◽  
Structural Elements ◽  
The Road ◽  
Current State ◽  
On The Road ◽  
Near Future

The overall objectives of the project are identification and description of repair works and reinforced selected bridges on N2 road to meet the required level of security and services for international heavy road traffic. This is in line with the Eurocodes design criteria. Optimum repair methods and reinforcements are required taking into account the whole set of bridges. If possible, the total amount of repair works and reinforcements will be described as a set of additive works in such a way that parts of works can be selected in the near future. These works should be selected depending on the priority aspects of the load capacity, the safety of repair works and reinforcement are defined from the transition of the current state of the bridges to the requirements established in the Euro codes. The state of the bridge is evaluated with regard to the state of the structural elements in combination with the assessment of the carrying capacity of the bridge.

Condition of the Armenian Apostolic Church at the Time of Coming to Authority N. S. Khrushchev

2020 ◽  
pp. 245-265
Author(s):  
Арсен Артурович Григорян
Keyword(s):  
Soviet Union ◽  
Research Methods ◽  
Russian Federation ◽  
National Archive ◽  
The State ◽  
State Archive ◽  
The Soviet Union ◽  
The Usa ◽  
The Russian Federation ◽  
Apostolic Church

Цель данной статьи - описать условия, в которых Армянская Апостольская Церковь вступила в эпоху правления Н. С. Хрущёва, начавшуюся в 1953 г. По содержанию статью можно поделить на две части: в первой даются сведения о количестве приходов на территории Советского Союза и за его пределами, а также о составе армянского духовенства в СССР; во второй излагаются проблемы, существовавшие внутри Армянской Церкви, и рассматриваются их причины. Методы исследования - описание и анализ. Ценность исследования заключается в использовании ранее неопубликованных документов Государственного архива Российской Федерации и Национального архива Армении. По итогам изучения фактического материала выделяются основные проблемы Армянской Апостольской Церкви на 1953 г.: финансовый дефицит, конфликт армянских католикосатов и стремление враждующих СССР и США использовать церковь в своих политических целях. The purpose of this article is to describe the conditions in which the Armenian Apostolic Church entered the epoch of the reign of N. S. Khrushchev, which began in 1953. The article can be divided into two parts: first one gives information about the number of parishes in the territory of the Soviet Union and beyond, and about the structure of the Armenian clergy in the USSR; the second one sets out the problems that existed in the Armenian Church and discusses their causes. Research methods - description and analysis. The value of the study lies in the use of previously unpublished documents of the State Archive of the Russian Federation and the National Archive of Armenia. Based on the results of studying the materials, the main problems of the Armenian Apostolic Church in 1953 are: financial deficit, the conflict of Armenian Catholicosates and the eagerness of USSR and the USA, that feuded with each other, to use the Сhurch for their political purposes.

Digital tax: an instructive foreign experience

2020 ◽  
pp. 69-87
Author(s):  
K.S. Teteryatnikov ◽  
S.G. Каmolov ◽  
D.A. Blashkina
Keyword(s):  
Russian Federation ◽  
High Tech ◽  
Digital Products ◽  
Tax Reforms ◽  
Goods And Services ◽  
Russian Economy ◽  
Internet Users ◽  
The Usa ◽  
On Line ◽  
The Russian Federation

The article is meant to analyze current problems and prospects for the development of effective tax policy as part of digital transformation of Russian economy. Introduction of a digital tax and the consequences of the digital tax reforms in the EU, the USA and OECD countries are highlighted. The necessity of qualitative transformation of the tax system of the Russian Federation in response to modern challenges is substantiated, taking into account the changes of the Tax Code of the Russian Federation adopted at the end of July 2020. The authors suggested their own concept of a digital tax and the prospects for its adoption in Russia, and consider it inappropriate to impose taxes on Internet users who do not use the Internet for business. Today, the main focus should be made on creating and testing effective technologies that allow on-line monitoring the tax basis of digital economy entities, taking into account the cross-border movement or use of digital products (goods and services). In addition, it would be extremely important to provide for a potential tax exemption for part of the profits of international ICT companies that are received on the territory of the Russian Federation and reinvested in joint with Russian companies projects in the high-tech for civil purposes area.

ВНЕШНЕПОЛИТИЧЕСКАЯ СИТУАЦИЯ В ЦЕНТРАЛЬНОЙ АЗИИ: В КОНТЕКСТЕ МЕЖДУНАРОДНЫХ ОТНОШЕНИЙ И НОВЫХ ТЕНДЕНЦИЙ В МИРОВОЙ ПОЛИТИКЕ

2020 ◽  
Author(s):  
Токтобек Рыскулов
Keyword(s):  
Central Asia ◽  
Transnational Corporation ◽  
World Politics ◽  
Energy Resources ◽  
Gas Oil ◽  
Political Events ◽  
Central Asian ◽  
The Usa ◽  
The Russian Federation ◽  
Near Future

Аннотация. В статье очерчено геополитическое и геостратегическое положение ЦА. Охарактеризована внешнеполитическая ситуация в ЦА в контексте новых тенденций в мировой политике. Показаны основные интересы и политические тренды РФ, США, КНР по отношения к государствам ЦА. Отмечено, что современная Центральная Азия, притягивает к себе все большее внимание внешних игроков. Объяснение кроется в том, что Центральная Азия обладает не только удобным геополитическим и выгодным геостратегическим положением, но и большим количеством природных ресурсов. Анализируя современные российско-китайские отношения приходим к мысли, что не все так безоблачно во взаимоотношениях двух государств, ведь еще никто не опроверг постулат о постоянных интересах государств и о непостоянстве друзей. В недалеком будущем конкуренция за энергоресурсы (газ, нефть) ЦА приведет к обострению отношений, к конфликту интересов России и Китая, практически это политическая аксиома. Готовы ли государства ЦА и России к такому сценарию политических событий? Ключевые слова: Центральна Азия, геополитика и геостратегия. Большая Игра, РФ, США, КНР. ЕАЭС, Большая Центральная Азия, ТНК, терроризм, экстремизм. Аннотация. Макалада геосаясий жана геостратегиялык абалдары чийилген. Борбордук Азиядагы тышкы саясий кырдаал дүйнөлүк саясаттагы жаңы тенденциялардын контекстинде мүнөздөлдү. БА мамлекеттеринин мамилелери боюнча РФ, АКШ, КЭР негизги кызыкчылыктары жана саясий тренддери көрсөтүлдү. Учурдагы Борбордук Азия тышкы оюнчулардын көбүрөөк көңүлүн өзүнө тартып жаткандыгы байкалган. Түшүндүрмө берүү, Борбордук Азия ыңгайлуу геосаясий жана пайдалуу геостратегиялык абалга гана ээ болбостон, көптөгөн жаратылыш ресурстарына ээ. Анализируя заманбап российско-кытай мамилелери приходим карата ойлорун, бул эмес баары эле безоблачно өз ара мамилелеринде эки мамлекеттин, анткени дагы эч ким опроверг постулат жөнүндө туруктуу кызыкчылыгында мамлекеттердин жөнүндө жана непостоянстве досторунун. Жакынкы келечекте ба энергия ресурстары үчүн атаандаштык (газ, мунай) Россия жана Кытайдын таламдарынын кагылышына, мамилелердин күчөшүнө алып келет, бул иш жүзүндө саясий аксиома. Борбордук Азия жана Орусия мамлекеттери мындай жагдайды саясий окуяларга даярбы? Түйүндүү сөздөр: Борбор Азия, геополитика жана геостратегия. Чоң оюн, РФ, АКШ, КЭР. ЕАЭС, Чоң Борбордук Азия, ТНК, терроризм, экстремизм. Annotation. The article outlines the geopolitical and geostrategic position of Central Asia. The article describes the foreign policy situation in Central Asia in the context of new trends in world politics. The main interests and political trends of the Russian Federation, the USA, China in relation to the Central Asian States are shown. It is noted that modern Central Asia attracts more and more attention of external players. The explanation lies in the fact that Central Asia has not only a convenient geopolitical and advantageous geostrategic position, but also a large number of natural resources. Analyzing the current Russian-Chinese relations, we come to the conclusion that not everything is so cloudless in the relations between the two States, because no one has yet refuted the postulate about the permanent interests of States and the impermanence of friends. In the near future, competition for energy resources (gas, oil) in Central Asia will lead to an aggravation of relations, to a conflict of interests between Russia and China, this is practically a political axiom. Are the Central Asian and Russian States ready for such a scenario of political events? Key words: Central Asia, geopolitics & geostrategy. Big Game, the RF, the USA, the CPR. EAEC, Big Central Asia, Transnational Corporation, terrorism, extremism

Современные методы дезинвазии осадка сточных вод

2020 ◽  
Author(s):  
N. Shakhrai ◽  
N. Dobrynina ◽  
T. Priimak
Keyword(s):  
Preventive Measures ◽  
Wastewater Sludge ◽  
Parasitic Diseases ◽  
Wastewater Disposal ◽  
Judicial Decisions ◽  
Regulatory Documents ◽  
Environmental Objects ◽  
Water And Wastewater ◽  
The Russian Federation ◽  
Rules Set

Организации водопроводно-канализационного хозяйства в рамках технологических процессов водоотведения должны обеспечивать дезинвазию очищенных сточных вод и осадков, образующихся в результате их очистки. В соответствии с пунктом 1.2 СанПиН 3.2.3215-14 Профилактика паразитарных болезней на территории РФ , санитарные правила устанавливают требования к комплексу организационных, санитарно-противоэпидемических (профилактических) мероприятий, проведение которых направлено на предупреждение возникновения и распространения паразитарных заболеваний. Проведена оценка нормативных документов по дезинвазии объектов окружающей среды, а также решений по судебным делам в части ее проведения. Выявлены разногласия в документах по проведению дезинвазии, в связи с чем направлены обращения в различные организации с предложением гармонизировать правила с целью исключения разночтений. Изучены индустриальные методы дезинвазии осадка сточных вод. Показано, что происходит необоснованное навязывание препарата Бингсти .Within the frames of the wastewater disposal processes water and wastewater utilities shall provide for the disinvasion of effluents and wastewater sludge generated in the process of wastewater treatment. In accordance with paragraph 1.2 of SanPiN 3.2.3215-14 Prevention of parasitic diseases in the territory of the Russian Federation , the sanitary rules set out the requirements for a comprehensive set of organizational, sanitary and anti-epidemic (preventive) measures, that are aimed at preventing the occurrence and spread of parasitic diseases. The assessment of regulatory documents on the disinvasion of environmental objects, as well as judicial decisions regarding its implementation, was carried out. Controversies were revealed in the regulatory documents, and appeals were sent to various organizations with a proposal to harmonize the rules in order to exclude discrepancies. Industrial methods for disinvasion of wastewater sludge were studied. It is shown that there is an unreasonable aggressive selling of Bingsti ineffective product.

scholarly journals COVID Lockdowns, Social Distancing, and Fatal Car Crashes: More Deaths on Hobbesian Highways?

2020 ◽  
Vol 4 (3-4) ◽  
pp. 238-259 ◽  
Author(s):  
Marshall W. Meyer
Keyword(s):  
World War Ii ◽  
Traffic Safety ◽  
Motor Vehicle ◽  
Road Traffic ◽  
Research Question ◽  
Traffic Volume ◽  
Similar Data ◽  
World War ◽  
Social Distancing ◽  
The Usa

Abstract Research Question What happened to US traffic safety during the first US COVID-19 lockdown, and why was the pattern the opposite of that observed in previous sudden declines of traffic volume? Data National and local statistics on US traffic volume, traffic fatalities, injury accidents, speeding violations, running of stop signs, and other indicators of vehicular driving behavior, both in 2020 and in previous US economic recessions affecting the volume of road traffic. Methods Comparative analysis of the similarities and differences between the data for the COVID-19 lockdown in parts of the USA in March 2020 and similar data for the 2008–2009 global economic crisis, as well as other US cases of major reductions in traffic volume. Findings The volume of traffic contracted sharply once a COVID-19 national emergency was declared and most states issued stay-at-home orders, but motor vehicle fatality rates, injury accidents, and speeding violations went up, and remained elevated even as traffic began returning toward normal. This pattern does not fit post-World War II recessions where fatality rates declined with the volume of traffic nor does the 2020 pattern match the pattern during World War II when traffic dropped substantially with little change in motor vehicle fatality rates. Conclusions The findings are consistent with a theory of social distancing on highways undermining compliance with social norms, a social cost of COVID which, if not corrected, poses potential long-term increases in non-compliance and dangerous driving.

scholarly journals A systematic review of potential habitat suitability for the jaguar Panthera onca in central Arizona and New Mexico, USA

Oryx ◽  
2021 ◽  
pp. 1-12
Author(s):  
Eric W. Sanderson ◽  
Kim Fisher ◽  
Rob Peters ◽  
Jon P. Beckmann ◽  
Bryan Bird ◽  
...  
Keyword(s):  
Systematic Review ◽  
New Mexico ◽  
Carrying Capacity ◽  
Panthera Onca ◽  
Mountain Ranges ◽  
Potential Habitat ◽  
The Status ◽  
The Usa ◽  
Mexico Border ◽  
Conservation Plan

Abstract In April 2019, the U.S. Fish and Wildlife Service (USFWS) released its recovery plan for the jaguar Panthera onca after several decades of discussion, litigation and controversy about the status of the species in the USA. The USFWS estimated that potential habitat, south of the Interstate-10 highway in Arizona and New Mexico, had a carrying capacity of c. six jaguars, and so focused its recovery programme on areas south of the USA–Mexico border. Here we present a systematic review of the modelling and assessment efforts over the last 25 years, with a focus on areas north of Interstate-10 in Arizona and New Mexico, outside the recovery unit considered by the USFWS. Despite differences in data inputs, methods, and analytical extent, the nine previous studies found support for potential suitable jaguar habitat in the central mountain ranges of Arizona and New Mexico. Applying slightly modified versions of the USFWS model and recalculating an Arizona-focused model over both states provided additional confirmation. Extending the area of consideration also substantially raised the carrying capacity of habitats in Arizona and New Mexico, from six to 90 or 151 adult jaguars, using the modified USFWS models. This review demonstrates the crucial ways in which choosing the extent of analysis influences the conclusions of a conservation plan. More importantly, it opens a new opportunity for jaguar conservation in North America that could help address threats from habitat losses, climate change and border infrastructure.

THE ACTIVITIES OF THE USA AND CHINA IN THE REGIONS OF THE WORLD, AFFECTING THE REALIZATION OF RUSSIA'S INTERESTS. Part 1: country interests and activities

2021 ◽  
Vol 1 (10) ◽  
pp. 149-166
Author(s):  
Dmitry V. Gordienko ◽  
Keyword(s):  
United States ◽  
Russian Federation ◽  
The United States ◽  
Asia Pacific ◽  
The Arctic ◽  
The World ◽  
The Usa ◽  
The Russian Federation ◽  
The Military ◽  
The Impact

The paper examines the interests of Russia, the United States and China in the regions of the world and identifies the priorities of Russia's activities in Europe, Central Asia and the Caucasus, the Asia-Pacific region, the Arctic, Africa, the Middle East and Latin America, their comparative assessment with the interests of the United States and China. An approach to assessing the impact of possible consequences of the activities of the United States and China on the realization of Russia's interests is proposed. This makes it possible to identify the priorities of the policy of the Russian Federation in various regions of the world. The results of the analysis can be used to substantiate recommendations to the military-political leadership of our country. It is concluded that the discrepancy between the interests of the United States and China is important for the implementation of the current economic and military policy of the Russian Federation.

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