РАСЧЕТ ДОРОЖНОГО ПОКРЫТИЯ НА УКРЕПЛЕННЫХ ГЕОСИНТЕТИЧЕСКИМИ МАТЕРИАЛАМИ НАСЫПЯХ, ПРИ НАЛИЧИИ ПУСТОТ В ОСНОВАНИИ Analytical Solutions for Settlements of a Pavement Structure on Geosynthetic-Reinforced Embankments overlying Voids

Bing-Qiang Zhang, Jia-Yao Li, Fu-Quan Chen, Qin-Feng Pan, Hai Liu

Аннотация


Дан обзор существующих методов расчета укрепленных геосинтетическими материалами дорожных конструкций над полостями в грунтовом основании, включая и имеющиеся методы расчета осадок. Разработана аналитическая модель на основе классического решения “балка Эйлера- Бернулли” для определения осадки композитной системы, включающей конструкцию дорожного покрытия с насыпью, укрепленной геосинтетическими материалами при наличии полостей в основании. Механическая схема армированной насыпи представлена в виде двух балок (верхняя-дорожное покрытие, нижняя- геосинтетик с окружающим грунтом насыпи) на Винклеровском основании. С использованием уравнения Эйлера- Бернулли составлены дифференциальные уравнения для разных участков балок (вне провала и над провалом) и приведены результаты решения. Сформулированы граничные условия, позволяющие составить системы уравнений для определения постоянных интегрирования, которые решаются в Mathcad. Сопоставление с известными теоретическими решениями для случая отсутствия пустот показали адекватность предложенной модели.


Полный текст статьи публикуется в английской версии журнала
«Soil Mechanics and Foundation Engineering”, vol.62, No.1


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