摘要
体外预应力混凝土技术已被广泛应用于各类既有结构的加固中,特别在桥梁加固中发挥着极为重要的作用。该文通过某桥采用体外束加固前后的挠度和应力的对比,表明该加固方法满足设计要求,并有效增大了结构安全储备,提高了抗弯刚度,延长了桥梁的使用年限。
The outer prestressed concrete technique has been widely applied in the reinforcement of various existing structures, especially plays the extremely important role in the reinforcement of bridge. Through the comparison of the deflections and stresses of a bridge before and after outer cable reinforcement, the article makes clearly that this reinforcing method can meet the design requirements, and efficiently increases the safety of the structure, enhances bending rigidity and extends the service life of bridge.
出处
《城市道桥与防洪》
2007年第7期51-53,共3页
Urban Roads Bridges & Flood Control
关键词
体外预应力
连续梁桥
裂缝宽度
加固
outer prestressing, continuous beam bridge, crack width, reinforcement
