客运专线桥梁工程灌注桩施工质量通病与防治措施

Common Quality Problems and Prevention Measures of Bridge Engineering Bore Filling Pile in Passenger Railway

客运专线铁路桥梁工程比例大,特殊结构多,技术标准高,其桩基础多为钻孔灌注桩。叙述了由于钻孔灌注桩系隐蔽工程,成桩环节多,施工过程中容易出现的质量问题和形成原因,指出,钻孔灌注桩工程在施工过程中的质量通病主要有塌孔、钻孔偏斜、掉钻落物、外杆折断、扩孔、缩孔、卡管事故、桩身孔洞、桩身加泥、钢筋笼上浮、断桩、"烂桩头"等,提出,就施工过程中质量通病应采取的防治措施。

The proportion of passenger railway bridge works isgreat,the special structure is multiple,and need high technical standards,There are mostly bored pile foundation in the passenger railway.The main quality problem in theprocess is pointed out, prevention measures were proposed.