杨根喜  濮志锋       （苏州市民用建筑设计院 215007）

    张学宏                     （苏州市建筑职工大学 215021）

[提要]  通过对采用- 50×4以及- 80×6钢板膨胀螺栓加固的钢筋混凝土梁与未加固的钢筋混凝土梁的静荷载对比试验，对用该方法加固后梁的刚度、承载能力的提高效能和裂缝开展情况以及加固用的钢板截面、螺栓间距等问题进行了分析探讨。
[关键词]  钢板  膨胀螺栓  加固  钢筋混凝土梁

This essay analyzes the rigidity,improved efficiency of bearing capaclty and the development of crack on the reinforced concrete beam which is strengthened by steel plate( - 50×4 and - 80×6)and expanding screw through contrasting experiment of static load between the strengthened beam and the non-strengthened beam.The article also explores the problems about the surface area of steel plate and the interval of screw.
Keywords: reinforced concrete beam; strengthening; steel plate; expanding screw