预应力混凝土桥梁中波纹管的注浆质量及其密实度关系到桥梁的耐久性及预应力钢绞线持久的发挥作用;以往在桥梁建设中对波纹管的注浆质量及其密实度没有合适的检测仪器和合理的检测方法进行检测,造成了桥梁养护费用的增加,文章介绍了声波散射法检测波纹管注浆质量及密实度的原理及方法。 The grouting quality and density of the corrugated pipe in prestressed concrete bridges are related to the durability of the bridge and the long-term effect of the prestressed steel strand. In the past, the quality and density of the grouting pipe in the bridge construction was not suitable Detection instruments and reasonable testing methods, resulting in an increase of bridge maintenance costs, the article introduced the principle and method of ultrasonic wave scattering method to detect the quality and density of the bellows grouting.