摘要
为研究粘钢-体外预应力综合加固法加固的T梁的受力特性,采用粘钢加固、体外预应力筋加固、粘钢-体外预应力综合加固法加固混凝土T梁,对比3种加固方法加固下T梁的结构刚度、裂缝宽度和极限承载力等结构特性,采用有限元进一步分析加固后梁的结构特性,并根据结果提出综合加固法加固下T梁承载力建议计算公式。研究表明,粘钢-体外预应力综合加固法加固的T梁具有良好的结构受力性能。
To study the mechanical properties of the concrete T-beams strengthened by the method of combined utilization of bond steel plates and external prestressing,the T-beams were respectively strengthened by the methods of the bond steel plates,external prestressing and combined utilization of bond steel plates and external prestressing.The structural properties of the rigidity,cracking width and ultimate load bearing capacity of the T-beams strengthened by the three methods were compared,the properties of the beams after they were strengthened were further analyzed by the finite element method and the calculation formulas for the bearing capacity of the beams strengthened by the combined utilization of bond steel plates and external prestressing were proposed in accordance with the comparison and analysis.The results of the study indicate that that the beams strengthened by the combined utilization of bond steel plates and external prestressing have fairly good mechanical properties.
出处
《世界桥梁》
北大核心
2011年第2期69-72,共4页
World Bridges
关键词
桥梁
T形梁
粘钢
体外预应力
加固试验
bridge
T-beam
bond steel plate
external prestressing
strengthening test
