Theoretical Justification of the Holding Power of a Mobile Anchor for Holding Timber-Rafting Objects
DOI:
https://doi.org/10.37482/0536-1036-2024-1-141-151Keywords:
timber rafting, anchor, mobile anchor, floating structures, raft holding, holding powerAbstract
Exploitation of small and medium-sized rivers for wood transportation ensures the economic availability of wood raw materials located at a great distance from consumers. Short-term operation of timber rafting facilities and their movement from one place to another is typical for these rivers. At such facilities, the use of mobile fillable anchors is considered to be the most appropriate. The article provides a brief description of their design, installation and dismantling. The fabrication and effective application of such anchors requires appropriate justification of their parameters (the holding power, in particular). The purpose of this study is to develop the scientific basis for determining the holding power and effective application of these anchors. A theoretical justification for the process of interaction of the proposed anchor with the soil mass has been carried out. On the basis of this justification, two alternative formulas were obtained to determine the holding power provided by one section of the grouser. Calculations using these formulas give similar results. The dependences of the holding power on the determinants, such as the vertical load on one section of the grouser transmitted from the containers being filled, the coefficient of friction of the anchor material on the soil, the density of the soil, the coefficient of its internal friction and the depth of penetration of the grousers into the soil are approximately the same. Similar properties of these formulas allow to consider them reliable. The total holding power of the anchor is calculated according to the weight of the filled containers, the holding power of one section of the grouser and their number. The degree and nature of the influence of the determinants on the holding power of a mobile fillable gravity anchor have been established. An increase in any of them leads to an increase in the holding power. The most significant determinant is the vertical load on one section of the grouser. The dependence of the holding power on it is linear. To a lesser extent, in descending order, the angle of the internal friction of the soil, the coefficient of friction of the anchor material on the soil, and the density of the soil influence the holding power. The dimensions of the grouser and their change have little effect, but the very fact of their presence provides a sizeable proportion of the holding power of the anchor.
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A. c. 1523508 СССР, МПК В65G 69/20 (2006.01). Устройство для берегового крепления наплавных сооружений: № 4343248/31-11: заявл. 03.11.1987: опубл. 23.11.1989 / В.Г. Таскаев. Taskaev V.G. A Device for Shore Anchorage of Floating Structures. USSR, no. SU 1523508А1, 1989. (In Russ.).
A. c. 1548321 СССР, МПК Е02В 3/06 (2006.01). Устройство для берегового крепления наплавных сооружений: № 4360415/30-15: заявл. 06.01.1988: опубл. 07.03.1990 / В.Г. Таскаев, Г.Г. Чешков. Taskaev V.G., Cheshkov G.G. A Device for Shore Anchorage of Floating Structures. USSR, no. SU 1548321А1, 1990. (In Russ.).
Вихарев А.Н. Расчет формы призмы выпирания грунта при вертикальном сдвиге анкера круглой формы методом квазипотенциального моделирования // Совершенствование техники и технологии лесозаготовок и транспорта леса: сб. науч. тр. фак. природ. ресурсов АГТУ. Вып. 4. Архангельск: АГТУ, 2010. С. 80–86. Vikharev A.N. Calculation of the Shape of the Prism of Soil Protrusion during Vertical Displacement of a Round-Shaped Anchor Using the Quasi-Potential Modeling Method. Improving Equipment and Technologies for Logging and Wood Transportation: Collection of Scientific Papers of the Faculty of Natural Resources of ASTU. Arkanglelsk, ASTU, 2010, iss. 4, pp. 80–86. (In Russ.).
Вихарев А.Н., Гагарин П.Н. Квазипотенциальное моделирование механических характеристик работы анкера в грунтах // Совершенствование техники и технологии лесозаготовок и транспорта леса: сб. науч. тр. сотрудников фак. природ. ресурсов, посвящ. 70-летию АГТУ и ФПР. Архангельск: АГТУ, 1999. С. 73–83. Vikharev A.N., Gagarin P.N. Quasi-Potential Modeling of the Mechanical Characteristics of the Anchor Operating in the Soil Mass. Improving Equipment and Technologies for Logging and Wood Transportation: Collection of Scientific Papers of the Faculty of Natural Resources, Dedicated to the 70th Anniversary of ASTU and the Faculty of Natural Resources. Arkhangelsk, ASTU, 1999, pp. 73–83. (In Russ.).
Еврокуб // Сайт «Завода удачных теплиц». Режим доступа: https://tepli4ki.ru/ (дата обращения: 17.01.22). Eurocube. The Website of “The Successful Greenhouse Plant”. (In Russ.).
Козлов К.В., Беляев Н.С., Посыпанов С.В. Оценка держащей силы мобильных наполняемых опор гравитационно-анкерного типа // Актуал. науч. исслед. в соврем. мире. 2021. № 11-11(79). С. 19–23. Kozlov K.V., Belyaev N.S., Posypanov S.V. Assessment of the Holding Power of Mobile Fillable Gravity Anchors. Current Scientific Research in the Modern World, 2021, no. 11-11(79), pp. 19–23. (In Russ.).
Козлов К.В., Беляев Н.С., Посыпанов С.В. Анализ крепления лесосплавных объектов при коротких сроках навигации // Инновации. Наука. Образование. 2021. № 36. С. 1543–1546. Kozlov K.V., Belyaev N.S., Posypanov S.V. Analysis of Anchoring of Timber-Rafting Facilities for Short Navigation Periods. Innovations. Science. Education, 2021, no. 36, pp. 1543–1546. (In Russ.).
Козлов К.В., Посыпанов С.В. Использование мобильных наполняемых опор для крепления наплавных объектов на лесосплаве // Инновации. Наука. Образование. 2020. № 23. С. 541–545. Kozlov K.V., Posypanov S.V. The Use of Mobile Fillable Anchors for Holding the Floating Objects in Timber Rafting. Innovations. Science. Education, 2020, no. 23, pp. 541–545. (In Russ.).
Митрофанов А.А. Научное обоснование и разработка экологически безопасного плотового лесосплава. Архангельск: АГТУ, 1999. 268 с. Mitrofanov A.A. Scientific Justification and Development of an Environmentally Safe Rafting. Arkhangelsk, ASTU Publ., 1999. 268 p. (In Russ.).
Митрофанов А.А. Лесосплав. Новые технологии, научное и техническое обеспечение: моногр. Архангельск: АГТУ, 2007. 492 с. Mitrofanov A.A. Timber Rafting. New Technologies, Scientific and Technical Support: monograph. Arkhangelsk, ASTU Publ., 2007. 492 p. (In Russ.).
Патент 119757 РФ, МПК E02B 1/00 (2006.01), E02B 3/00 (2006.01), E01D 19/00 (2006.01). Анкерная опора для берегового крепления наплавных сооружений: № 2012116665/13: заявл. 24.04.2012: опубл. 27.08.2012 / Г.Я. Суров, А.Н. Вихарев, С.Е. Лихачев, А.А. Емельянов. 9 с. Surov G.Ya., Vikharev A.N., Likhachev S.E., Emel’yanov A.A. The anchor for holding the floating structures to the shore. Patent RF, no. RU 119757U1, 2012. (In Russ.).
Патякин В.И., Дмитриев Ю.Я., Зайцев А.А. Водный транспорт леса. М.: Лесн. пром-сть, 1985. 336 с. Patyakin V.I., Dmitriev Yu.Ya., Zaytsev A.A. Water Log Movement. Moscow, Lesnaya promyshlennost’ Publ., 1985. 336 p. (In Russ.).
Технические таблицы. 2006. Режим доступа: https://tehtab.ru/ (дата обращения: 17.12.21). Technical Tables, 2006. (In Russ.). https://tehtab.ru/
Цытович Н.А. Механика грунтов. 4-е изд., перераб. и доп. М.: Высш. шк., 1983. 288 с. Tsytovich N.A. Mechanics of Soils.: 4th ed., revised and enlarged. Moscow, Vyshaya shkola Publ., 1983. 288 p. (In Russ.).
Ambrose J. Simplified Design of Masonry Structures. New York, John Wiley and Sons, 1991. pp. 70–75.
Baker W.H., Kondner R.L. Pullout Load Capacity of a Circular Earth Anchor Buried in Sand. National Academy of Sciences, Highway Research Record, 1966, no. 108, pp. 1–10.
Craig R.F. Soil Mechanics. 6th ed. London, New York: E & FN Spon, 1997. 485 р.
Heibig C. Künstliche Anker beim Seilkraneinsatz State of the Art. Zürich, ETHZ D-WAHO Forstliches Ingenierurwesen, 1997. 44 p.
Verruijt A. Soil Mechanics. Delft University of Technology, 2012. 331 p.
Yam K.L. The Wiley Encyclopedia of Packaging Technology. John Wiley & Sons, 2009. 1376 p. https://doi.org/10.1002/9780470541395
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