预应力混凝土先简支后连续梁桥加固效果分析

Analysis on Strengthening Effect of Prestressed Concrete Bridge with Continuous Girder from Simply-supported

在分析一座预应力混凝土先简支后连续工字梁病害情况和加固措施的基础上,通过设置相应的荷载试验工况,对其采用改善主梁抗弯性能和结构横向受力整体性的加固措施进行了研究,获取结构在试验荷载下的应变和变形参数,并将其与理论计算值进行比较,对其加固效果进行了评价。结果表明:采用增设横隔板和梁底粘贴预应力纤维薄板加固措施对改善桥梁结构的受力性能是有效的。

Base on analysis on the from simply-supporting, by loading problems of prestressed concrete bridge with continuous I-girder transformed test for the reinforcement measure of the I-girder bridge, researches on the strengthening measures to improve the bending and vertical integrated performance of the prestressed concrete girder have been conducted. The parameters of strain and deformation of the girder have been obtained, which has been compared with the theory calculation result, and the strengthening effect has been appraised. suhs have shown that it is effective to improve the performance of the bridge by ering prestressed fiber plate to bottom of the girder. additional diaphragmand The re suits have shown that it is effective to improve the performance of the bridge by additional diaphragmand and plat ering prestressed fiber plate to bottom of the girder.