sibadiНаучный рецензируемый журнал "Вестник СибАДИ"The Russian Automobile and Highway Industry Journal2071-72962658-5626The Siberian State Automobile and Highway University10.26518/2071-7296-2021-18-5-614-632sibadi-1352Research ArticleСТРОИТЕЛЬСТВО И АРХИТЕКТУРАCONSTRUCTION AND ARCHITECTUREВлияние влажности грунта на деформационные свойства грунтощебеночных образцов при сжатииInfluence of soil moisture on the deformation properties of soil-crushed stone samples during compressionhttps://orcid.org/0000-0002-1395-0553ПролыгинА. С.ProlyginA. S.

Пролыгин Александр Сергеевич – аспирант кафедры «Строительство и эксплуатация дорог»

Author ID: 57222243670

г. Омск

Aleksandr S. Prolygin, Postgraduate student of the Road Construction and Maintenance DepartmentAuthor ID: 57222243670

Omsk

aleksandrprolygin@mail.ruhttps://orcid.org/0000-0002-7582-3939ДолгихГ. В.DolgikhG. V.

Долгих Геннадий Владимирович – канд. техн. наук, доц., заведующий кафедрой «Строительство и эксплуатация дорог»

Author ID: 57199391542)

г. Омск

Gennadii V. Dolgikh, Cand. of Sci., Associate Professor, Head of the Road Construction and Maintenance Department

Author ID: 57199391542

Omsk

dolgikh-gv@yandex.ruhttps://orcid.org/0000-0003-0291-2022КалининА. Л.KalininA. L.

Калинин Александр Львович – ст. преп. кафедры «Строительство и эксплуатация дорог»

г. Омск

Aleksandr L. Kalinin, Senior teacher of the Road Construction and Maintenance Department

Omsk

https://orcid.org/0000-0002-5534-6338АлександроваН. П.AlexandrovaN. P.

Александрова Наталья Павловна – канд. техн. наук, доц. кафедры «Строительство и эксплуатация  дорог»

г. Омск

Natalia P. Alexandrova, Cand. of Sci., Associate Professor, Head of the Road Construction and Maintenance Department

Author ID: 57191525817

Omsk

nata26.74@mail.ruСибирский государственный автомобильно-дорожный университет (СибАДИ)РоссияSiberian State Automobile and Highway University (SibADI)Russian Federation202125112021185614632Copyright © Пролыгин А.С., Долгих Г.В., Калинин А.Л., Александрова Н.П., 20212021Пролыгин А.С., Долгих Г.В., Калинин А.Л., Александрова Н.П.Prolygin A.S., Dolgikh G.V., Kalinin A.L., Alexandrova N.P.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://vestnik.sibadi.org/jour/article/view/1352

Введение. Целью статьи является математическое моделирование зависимости секущего модуля деформации от влажности грунта и содержания щебня в грунтощебеночном образце на при одноосном сжатии. Необходимость построения такой математической модели необходима для введения поправочных коэффициентов к значениям штамповых модулей деформации грунтощебеночного слоя, вычисленных по данным испытаний, поставленных при других влажностях грунта, например, при испытаниях в лотке или на дорогах в нерасчетный период года.Материалы и методы. Для выполнения испытаний при помощи большого прибора стандартного уплотнения изготовлены цилиндрические образцы высотой 20 см и диаметром 10 см. В образцах варьировалось содержание щебня смеси фракций 5–10 и 10–20 мм. Приведены методики насыщения образцов водой и их испытания одноосным сжатием. Изложены правила обработки результатов эксперимента, к которым относится корректировка начальной части графической зависимости деформации от давления и статистическая обработка результатов. Выполнен анализ методов вычисления модуля деформации, которые классифицированы на три вида: секущий модуль, касательный модуль и кусочно-линейный модуль. На основе этого анализа обоснован способ вычисления модуля деформации грунтощебеночного образца при одноосном сжатии.Результаты. Приведены результаты экспериментального определения деформационных характеристик грунтощебеночных образцов при одноосном сжатии. Получена математическая модель зависимости модуля деформации грунтощебеночного образца от влажности грунта и содержания щебня, применяемых в грунтово-щебеночной смеси.Обсуждение и заключение. Даны рекомендации по применению результатов исследования для разработки альбома типовых конструкций дорожных одежд низшего типа в районах Омской области.

Introduction. The purpose of the article is to determine the dependence of the influence of soil moisture and the content of crushed stone in a soil-crushed stone sample on the secant modulus of deformation under uniaxial compression. The need for such a mathematical model is necessary in order to introduce correction factors to the values of the stamped deformation moduli of the gravel layer calculated from test data delivered at other soil moisture conditions, e.g. for flume or road tests during a non-calculated period of the year.Materials and methods. Cylindrical samples with a height of 20 cm and a diameter of 10 cm were made to perform tests using a large standard sealing device. The content of crushed stone of a mixture of fractions of 5-10 and 10-20 mm varied in the samples. The methods of saturation of samples with water and their testing by uniaxial compression are given. The rules for processing the experimental results are described, which include: correction of the initial part of the graphical dependence of deformation from pressure and statistical processing of the results. The analysis of methods for calculating the deformation modulus, which are classified into three types, is performed: secant module, tangent module and piecewise linear module. Based on this analysis, a method for calculating the deformation modulus of a soil-crushed stone sample under uniaxial compression is justified.Results. The results of experimental determination of the deformation characteristics of soil-crushed stone samples under uniaxial compression are presented. A mathematical model of the dependence of the deformation modulus of a soil-crushed stone sample from the soil moisture and the content of crushed stone used in the soil-crushed stone mixture is obtained.Discussion and conclusions. Recommendations are given on the application of the research results for the development of an album of standard constructions of road pavement of the lowest type in the districts of the Omsk region.

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The authors declare that there are no conflicts of interest present.