ВЛИЯНИЕ СЕЗОННЫХ КОЛЕБАНИЙ ТЕМПЕРАТУРЫ ОКРУЖАЮЩЕЙ СРЕДЫ НА ТЕМПЕРАТУРНЫЕ И ДЕФОРМАЦИОННЫЕ ХАРАКТЕРИСТИКИ ПОДЗЕМНЫХ ИНЖЕНЕРНЫХ ТОННЕЛЕЙ Influence of Seasonal Ambient Temperature on the Temperature and Deformation Behaviors of the Underground Utility Tunnel

Junchao Yang, Feilong Cui, Yatao Zhang, Ben Li, Bin Li, Wenhao Mei

Аннотация


Описывается метод конечно-элементного численного моделирования ABAQUS для изучения температурного поля и деформационного поведения подземного тоннеля в условиях сезонных колебаний температуры окружающей среды. Результаты численного анализа показывают, что температурное поле внутри тоннеля последовательно демонстрирует в процессе нагрева и охлаждения “низкотемпературную воронку”, за которой следует зона “холодного ядра”, а затем “высокотемпературную воронку”, за которой следует “горячее ядро”. Границы перехода от одного состояния к другому постепенно исчезают при постоянном нагреве и охлаждении. При изменении сезонной температуры окружающей среды
в диапазоне от –15°С до +34°С вертикальная осадка общего перекрытия тоннеля с учетом морозного пучения окружающего грунта значительно превосходила «выпуклую» деформацию перекрытия силового отсека.


Полный текст статьи публикуется в английской версии журнала
«Soil Mechanics and Foundation Engineering”, vol.62, No.3


Литература


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