钻孔灌注桩施工的质量预控

钻孔灌注桩的质量，取决于对施工各个环节的质量预控，永州市政府大楼桩基和其它一些工程施工中，在测量放线、护筒埋设、钻机对位、钢筋笼下设和孔底沉渣、孔内泥浆及混凝土浇筑等环节节采取了一系列严格的质量预控措施，从而保证桩体到了设计要求。

BEFOREHAND CONTROL THE QUALITY OF CONSTRUCTION IN BOREHOLE-PERFUSION STAKES

The quality of borehole-perfusion stakes depends on the beforehand control of every tache in construction. A series of strict measures of beforehand controlling the quality in survey, burying shield-tube, regulating the position of drilling machine, laying down cages made of reinforcing bar, precipitating dregs in bore bottom, pouring slurry and concrete inside bore, were adopted in construction of the foundation stakes of Yongzhou prefecture government building and some other sites. Therefore the stakes meet the needs of design.