铁路连续梁预应力孔道压浆不饱满处理方法分析

Analysis of treatment methods for part grouting of prestressed duct for pailway continuous beam

简要介绍预应力孔道压浆作为后张法预应力连续梁施工的最后一项工作,其质量对桥梁结构的承载力、使用寿命和铁路运营的安全性有着重大影响。通过工程实例主要介绍预应力孔道压浆饱满度的检查方法和不饱满时的处理措施。结果表明,预应力孔道压浆施工属隐蔽工程,压浆饱满度不能被直观发现,施工完成后对压浆饱满度进行检查也是很有必要的,为以后的工程施工提供了一定的参考价值。

Introduce that prestressed duct grouting is the last step of post-tensioned prestressed continuous beam construction,the quality has a significant impact on the bearing capacity and the life of the bridge structure,also on the safety of rail operations. Mainly Introduce the inspection methods of prestressed duct grouting fullness and the treatment measures when is not full by engineering example. The results show that prestressed duct grouting is hidden works,part or full grouting is not be intuitive discovered,grouting plumpness check is necessary after the completion of construction,all these provide a certain reference value for future construction.