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现代建筑的基础底,一般都低于地面1m以上,有地下室的高层建筑,有时可比地面低3～5m。这类工程的桩基础施工,通常都采用先开挖,后施工的方法。但这种方法受场地、机械、雨季、排水等条件的限制,效果往往都不理想。所以,我们在桩基础施工中,采用灌注低于地面的负桩施工工艺,控制桩顶标高,在缩短工期,节约材料方面都取得了很好的效果。如桂林南溪饭店,施工场地狭窄,而且傍依旧建筑物,施工期间恰逢雨季,如果采用先
The foundation of modern buildings is generally less than 1m above the ground. High-rise buildings with basements can sometimes be 3 to 5 meters below the ground. In the construction of pile foundations for such projects, the method of excavation and post-construction is generally adopted. However, this method is limited by the site, machinery, rainy season, drainage and other conditions, and the effect is often unsatisfactory. Therefore, in the construction of the pile foundation, we have adopted the negative pile construction technology with infusion below the ground to control the elevation of the pile top, and achieved good results in shortening the construction period and saving materials. Such as Guilin Nanxi Hotel, the construction site is narrow, and the old buildings are still in sight. The construction period coincides with the rainy season.