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随着大直径灌注桩在城市高层建筑中大量被采用,其质量管理和质量控制问题更显得突出和重要。众所周知,我国目前较多地采用钻孔或冲孔泥浆护壁水下灌注桩身混凝土的成桩工艺,因此大直径灌注桩属于隐蔽工程。尽管有些施工单位对成桩工艺已相当熟悉,但是由于建筑场地工程地质条件和施工条件不同,在整个成桩施工过程中也会经常遇到各种直接影响成桩质量的问题。限于我国目前监测仪器设备的水平,尚不能及时而准确地发现和显示这些弊端。因此,只有加
As large-diameter cast-in-place piles are widely used in urban high-rise buildings, their quality management and quality control problems are even more prominent and important. As we all know, China currently uses a large number of bored or pierced mud shields for the underwater pile-concrete pile forming process. Therefore, large-diameter piles are concealed. Although some construction units are quite familiar with the pile forming process, due to the different geological conditions and construction conditions of the construction site, various problems that directly affect the pile quality will often be encountered during the entire pile construction process. Limited to the current level of China’s monitoring equipment, it is not yet possible to find and display these drawbacks in a timely and accurate manner. So only add