我国大跨径钢桥面铺装层的早期破坏较为严重, 许多大桥的铺装在经历大修后依然存在病害.介绍了冲击回波法的检测原理,应用该方法对钢桥面铺装层质量进行检测并经过工程验证,结果表明:冲击回波法可有效辨别铺装层使用过程中发生的脱空、开裂等病害情况,可在实际检测工程中推广应用.

The early damage of long-span steel deck pavement layer is more serious, the diseases of bridge pavement still exist after overhaul.The detection principle of impact echo method is introduced, and this method is used in the detection of steel bridge pavement quality and tested in engineering.The results show that:the impact echo method can effectively identify the pavement void, cracking and other diseases in deck pavement layer and can be widely applied in practical engineering.