АНАЛИЗ ДЕФОРМАЦИОННЫХ И ТЕМПЕРАТУРНЫХ ХАРАКТЕРИСТИК ЗЕМЛЯНОГО ПОЛОТНА ВЫСОКОСКОРОСТНЫХ ЖЕЛЕЗНЫХ ДОРОГ В РЕГИОНАХ РАСПРОСТРАНЕНИЯ СЕЗОННО МЕРЗЛЫХ ГРУНТОВ Analysis of deformation and temperature characteristics of high-speed railway roadbed in seasonal frozen regions

YUZHI ZHANG, B. SUN, P. LI, X. LIANG, J. YANG

Аннотация


Изучены пространственно$временные характеристики изменения деформаций и температуры высокоскоростной железной дороги Харбин-Далянь. Проанализированы закономерности распределения деформаций полотна с учетом типа конструкции, глубины промерзания, характеристик грунтовой насыпи. Приводятся данные наблюдений за 1,5 года из пятилетнего периода наблюдений по четырем поперечным сечениям. Несмотря на то, что насыпь сложена из грунтов, считающихся непучинистыми, обнаружено проявление местных деформаций пучения, что важно учитывать, несмотря на их относительно небольшую величину, при устройстве высокоскоростных магистралей, поскольку как сами допустимые деформации, так и их допустимая неравномерность для таких магистралей крайне малы. Всестороннее понимание деформационного поведения дорожного полотна и изменений температуры грунта при эксплуатации высокоскоростных желез$ ных дорог в холодных регионах может послужить основой для последующих теоретических и экспериментальных исследований, а также рекомендаций при эксплуатации и техническом обслуживании дорог.

Литература


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