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桥梁桩基承受桥梁的全部荷载,其施工质量直接影响整体桥梁的稳定性。近年来,桥梁桩基检测过程中发现很多质量问题,其中以桩基础施工中的缩颈及孔斜是其中最有代表性的一种。文章基于桥梁桩基础施工实践,从钻孔灌注桩缩颈及孔斜的成因、预防、检测和处理措施等方面进行阐述,并提出了改进建议。
Bridge pile foundation to bear the full load of the bridge, the construction quality of a direct impact on the overall stability of the bridge. In recent years, a lot of quality problems have been found during the testing process of pile foundation in the bridge, among which the constriction and hole inclination in pile foundation construction are the most representative ones. Based on the practice of bridge pile foundation construction, this paper elaborates the causes of necking and hole taper of bored piles, prevention, detection and treatment measures, and puts forward some suggestions for improvement.