摘要
1986年北京工人体育场经第一次改造后,经过长期使用以及在温度应力的作用下,部分斜梁在梁、柱节点附近存在裂缝,因此采用了体外预应力加固技术对其再次改造,以增加斜梁的抗裂能力和强度。对北京工人体育场看台斜梁采用体外预应力加固的结构体系,确定施加预应力大小的计算原则,转向块的设计以及施工过程和施工工艺进行介绍,表明了体外预应力加固方法的优越性。
Beijing Workers＇ Stadium was reinforced for the first time in 1986, after long application and effect of temperature stress, there were some cracks on partial inclined beams near the joints of beam and column. For the second reform, external prestressing is used for strengthening the beams. It is introduced the structural system of prestressed concrete members using external prestressing in the inclined beam of the Beijing Workers＇ Stadium, the principle of determining the prestressing force and the design of the deflector block;as well as the construction process and construction technology. Which shows the superiority of external prestressing strengthening.
出处
《工业建筑》
CSCD
北大核心
2008年第12期30-32,21,共4页
Industrial Construction
关键词
北京工人体育场
体外预应力
加固
钢绞线
转向块
Beijing Workers＇ Stadium
external prestressing
reinforcement
steel wires
deflector block
