Construction Of Deep Foundation Pit Supporting Of High-rise Building In Riverside Area Of Ganfu Plain

Nanchang belongs to Ganfu plain. According to its lithology and engineering properties, from top to bottom it’s divided into plain fill, silty soil, spinning earth, mucky silty clay, coarse sand and strong-weathered pelitic siltstone, medium-weathered pelitic siltstone, weathering of calcareous mudstone.This paper aims to explore the general approaches of deep Foundation pit support in specific geological conditions on its Riverside area and get economical and effective combination form of Foundation pit support.By comparing and analyzing deep Foundation pit support engineering of four representative high-rise buildings which are Ligao Riverside International, and Xinli Center, and Xindi Center, and Zhongwei Commercial Center on the Riverside regional, I obtain the general practices of deep Foundation pit support in this area: installing cement soil mixing pile, and mechanical drilling pile+spin spray pile, and soil nail wall in the perimeter; for pit crater,using natural put Po, and soil nail wall, and mechanical drilling pile+spin spray pile; for pit perimeter and the inside, setting reasonably precipitation points and cut ditch, pit perimeter reasonable select set Foundation pit support engineering monitoring points, and Road subsidence monitoring points, underground water level monitoring points and underground pipeline monitoring points.Besides, according to different safe levels of deep Foundation pit support of high-rise buildings on the Riverside area and different combinations that they take, I further clarity scope of all support types.