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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">vestnikvniizht</journal-id><journal-title-group><journal-title xml:lang="ru">Вестник Научно-исследовательского института железнодорожного транспорта (ВЕСТНИК ВНИИЖТ)</journal-title><trans-title-group xml:lang="en"><trans-title>RUSSIAN RAILWAY SCIENCE JOURNAL</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2223-9731</issn><issn pub-type="epub">2713-2560</issn><publisher><publisher-name>Joint Stock Company "Railway Research Institute"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.21780/2223-9731-2019-78-3-183-187</article-id><article-id custom-type="elpub" pub-id-type="custom">vestnikvniizht-316</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>Другое</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Miscellaneous</subject></subj-group></article-categories><title-group><article-title>Оценка срока службы безбалластной конструкции пути</article-title><trans-title-group xml:lang="en"><trans-title>Service life evaluation of ballastless track construction</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Михайлов</surname><given-names>С. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Mikhaylov</surname><given-names>S. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Михайлов Сергей Владимирович, бизнес-аналитик, Центр математического моделирования, Москва, 129626, Россия</p></bio><bio xml:lang="en"><p>Sergey V. Mikhaylov, Business Analyst, Center for Mathematical Modeling, Moscow, 129626, Russia</p></bio><email xlink:type="simple">mikhailov.sergey@vniizht.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Акционерное общество «Научно-исследовательский институт железнодорожного транспорта» (АО «ВНИИЖТ»)</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Joint Stock Company “Railway Research Institute” (JSC “VNIIZhT”)</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2019</year></pub-date><pub-date pub-type="epub"><day>27</day><month>07</month><year>2019</year></pub-date><volume>78</volume><issue>3</issue><fpage>183</fpage><lpage>187</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Михайлов С.В., 2019</copyright-statement><copyright-year>2019</copyright-year><copyright-holder xml:lang="ru">Михайлов С.В.</copyright-holder><copyright-holder xml:lang="en">Mikhaylov S.V.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://www.journal-vniizht.ru/jour/article/view/316">https://www.journal-vniizht.ru/jour/article/view/316</self-uri><abstract><p>Приводится метод расчета срока службы безбалластной конструкции пути с использованием модели колебаний пути как трехслойной балки, лежащей на модифицированном основании Винклера. Применение данной модели обусловлено необходимостью проведения расчета для несущей бетонной плиты, разрушения в которой являются основной причиной выхода из строя безбалластной конструкции пути. Проведена оценка срока службы безбалластной конструкции пути для различных условий эксплуатации и представлено сравнение этих данных с результатами, полученными при помощи метода с использованием модели однослойной балки. Построены графики зависимости срока службы безбалластной конструкции пути от нагрузок на ось, скорости движения экипажей и грузонапряженности на линии. Сделаны выводы о применимости модели однослойной балки для оценки срока службы безбалластной конструкции пути в текущих условиях эксплуатации и целесообразности использования предложенного в статье способа для перспективных условий высокоскоростного и тяжеловесного движения.</p></abstract><trans-abstract xml:lang="en"><p>The article presents method for calculating service life of ballastless track structure using the track oscillation model as a structure containing three infinitely long beams, the lower of which lies on the modified Winkler base, and the upper and middle are based on elastic layers, mainly having the characteristics of Winkler. The use of this model is due to the need to carry out calculation for bearing concrete slab, the destruction of which is the main reason for the failure of the ballastless track structure. First part of the article presents model for calculating service life of a ballastless structure. When calculating the damage index, which takes the stresses in the bearing concrete slab, to estimate the vertical dynamic forces acting on the track, it is proposed to use a frequency response that determines the dynamic system with input on the track unevenness and output on the dynamic force at the wheel and rail contact in the model oscillations of the track as a three-layer beam. Second part presents estimates of the service life of ballastless structure for various operating conditions and their comparison with the results obtained using the practice method with the single-beam model. Graphs were plotted for the service life of the ballastless track structure on axle loads, the speed of the carriages and the load capacity on the line. Results show the applicability of the single-layer beam model for estimating the service life of the ballastless track structure in the current operating conditions; however, for the promising conditions of high-speed and heavy traffic, it is advisable to use a three-layer model.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>вертикальные динамические силы</kwd><kwd>спектральная плотность</kwd><kwd>прогибы</kwd><kwd>напряжения</kwd><kwd>срок службы</kwd><kwd>моделирование</kwd><kwd>модель трехслойной балки</kwd><kwd>безбалластные конструкции пути</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Стратегия развития холдинга «РЖД» на период до 2030 года [Электронный ресурс]. 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