体外预应力加固法实桥试验分析  

Real- bridge test and analysis of external prestressing reinforcement method

作　　者：袁飞[1] 

机构地区：[1]桥梁工程防灾减灾山西省重点实验室,山西省交通科学研究院,山西太原030006

出　　处：《内蒙古公路与运输》2016年第1期11-14,共4页Highways & Transportation in Inner Mongolia

摘　　要：本文通过体外预应力实桥加固试验,测试该方法的加固效果。试验过程中采用分级加载的方式,对试验梁加固前后各级荷载作用下控制截面的应变、挠度和裂缝宽度进行详细测量分析。试验结果表明,体外预应力加固法能够有效降低开裂结构控制截面的应变、挠度和裂缝宽度,提高结构刚度和耐久性,延长桥梁使用寿命。可为今后类似工程的加固设计提供参考。The reinforcement effect of the external prestressing reinforcement method is tested by the real- bridge test.During the test,the strain,before and after reinforcement,deflection and crack width of controlling section under different load levels were measured and analyzed in detail. The experimental results show that the external prestressing method can effectively reduce the strain,deflection and crack width of controling section on cracking structure,improve the stiffness and durability of structures,and prolong the service life of the bridge. The design for reinforcement of this test will provide reference for similar projects in future.

关 键 词：粘贴钢板 加固 刚度效应 

分 类 号：U491[交通运输工程—交通运输规划与管理]