ИССЛЕДОВАНИЕ СЕЙСМИЧЕСКИХ ЭФФЕКТОВ В УСЛОВИЯХ ЭКСТРЕМАЛЬНЫХ АТМОСФЕРНЫХ ОСАДКОВ Study on the Seismic Effects under Extreme Precipitation Conditions

Qing Hu, Wenqin Dong, Jinggang Li, Heng Li

Аннотация


Экстремальные атмосферные осадки приводят к повышению уровня грунтовых вод, изменяя свойства грунта и условия на строительной площадке. Проведен нелинейный сейсмический анализ с учетом возникновения и диссипации порового давления воды на типичном участке с переменным уровнем грунтовых вод (УГВ) в районе г.Ухань. Изучено влияние повышения УГВ на пиковое ускорение, спектр
отклика ускорения и относительное поровое давление воды в грунте. Как показали результаты исследований, повышение УГВ оказывает существенное влияние на параметры подвижек грунтового массива и повышает риск разжижения грунтов при сильных землетрясениях. Предложены новые подходы к проектированию в таких условиях сейсмоустойчивых высотных зданий с преобладающими длинными периодами колебаний.

Полный текст статьи публикуется в английской версии журнала
«Soil Mechanics and Foundation Engineering”, vol.63, No.3


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