摘要
针对普通钢筋混凝土简支T梁,采用体外预应力加固方法,通过建立有限元分析模型,对比分析了不同荷载等级作用下钢筋混凝土T梁加固前后承载能力的变化趋势,探讨体外预应力筋数量、跨径对T梁承载能力的影响。研究结果表明,钢筋混凝土T梁加固后承载能力明显提高及裂缝宽度减少,对钢筋混凝土T梁加固及延长使用寿命具有一定的参考价值。
This paper aims at ordinary reinforced concrete simply-supported T-beams and adopts external prestressing reinforcement methods,and a finite element analysis model is established to compare and analyze the change in load capacity of reinforced concrete T-beams before and after strengthening under different load levels. The effects of the number of external prestressed tendons and the span on the bearing capacity of the T beam are also discussed. The research shows that the reinforced concrete T-beam reinforcement can significantly increase the bearing capacity and reduce the crack width,which has certain reference value for the reinforcement and extension of the reinforced concrete T-beam.
作者
陈泉杜
CHEN Quandu(CCCC Highway Consultants(Xiamen)Co.,Ltd.,Xiamen 361000)
出处
《福建建筑》
2020年第4期82-85,共4页
Fujian Architecture & Construction
关键词
简支T梁
体外预应力
承载能力
跨径
预应力筋数量
Simple supported T-beam
External prestressing
Bearing capacity
Span
The number of prestressed tendons
