<正>结合沪宁高速公路扩建工程，阐述了新老桥连接部位受力作用机理及构造形式，分析了胶植钢筋的特点、适用范围、工艺原理，总结了桥梁植筋技术在桥梁扩建施工应用中的施工方法和注意事项。

The principle of stress action and the form of structure in the joint between old and new girder bridges by the technology of planting reinforcing steel bar were analyzed with the example in the extend construction of Hu-Ning highway. The application of this method in the bridge extension reconstruction was studied from the characteristic, applicable range and technical principle. The construction method and related matters were stressed in details.