体外预应力加固雁形板的试验研究  

Experimental Research of Bird-shape Plates Strengthened by External Prestressing

作　　者：李正英[1] 林文修 郑硕才[1] 段成禄[2] 

机构地区：[1]重庆大学土木工程学院,400045 [2]重庆建筑科学研究院,400015

出　　处：《建筑结构》2002年第6期16-18,28,共4页Building Structure

摘　　要：通过对 1 8m跨雁形板用体外预应力筋加固前后的静载试验 ,分析研究了体外预应力加固雁形板这种薄壁板梁组合体系加固前后的受力性能及力学性能指标改善情况 ,得出体外预应力钢筋对提高梁受力性能的贡献。在此基础上 ,考虑不同布筋形式对加固效果的影响 ,寻求合理的加固方法 。By means of static loading and destruction test on two 18m span bird shape plates before and after strengthening with external prestressing,the mechanical property of the strengthened plate is analyzed,and the capability of improving the property of the bird shape plate is obtained. The influence of different reinforcement method is studied,and the experimental results indicate that the curved line shape tendon is superior to the straight line shape tendon. These results are useful in the practical engineering.

关 键 词：加固 体外预应力 雁形板 试验 比拟梁法 

分 类 号：TU378.5[建筑科学—结构工程]