本文通过西康铁路第九标段四座桥梁支承垫石病害的全面整治，提供了顶梁、半干硬砂浆捣填以及支承垫石形成等具体经验。此方法可为今后在既有线上进行支承垫石病害处理提供一些借鉴。

This paper sums up the experiences in tamping and filling top girder by semidry hard mortar and forming supporting pad stone based on the overall mending the disease of supporting padding stone of four bridges in Bidding Section 4 on Xian-Ankang Railway Line. This method can give reference to mending disease of supporting padding stone on existing railway line in future.