Application of Anchored Static Pressuring Pile Combined with Column Interception Method in Tilted Building Restoration
In the coastal areas of the Yangtze River Delta area,the soil improved composite ground is the most widely used foundation type for the multi-story residential buildings with a total height below 24 meters.Due to its special geological and geotechnical environment,there are occasional differential settlements occurred after the completion of these residential build-ings.To mitigate the differential settlements in these buildings,the conventional improvement methods usually have a long con-struction duration and are often costly.This paper presents a case history of a tilted existing residential building restoration in Qidong City,Jiangsu Province by using the anchored static pressuring pile combined with interception pile method.The exist-ing building was improved by soil-cement mixing columns.Throughout the planned interception of the existing soil-cement col-umns,this method can restore the tilting and at the same time,significantly reduce the construction duration and the cost.From the construction monitoring data,this combined method can be applied in the buildings on the composite ground with a total height less than 24 meters.
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