摘要
结合多年的工程实践经验,提出通过跨中对顶合龙张拉下缘预应力索进行体系转换、通过体外索和跨中预压重等措施控制连续刚构桥长期下挠,解决了控制大跨梁桥长期下挠的难题,保证了结构的安全。
Combining with many years’experience,the paper puts forward some measures of controlling long-term deflection of continuous steel bridge,such as carrying out system conversion by middle-span and opposite-vertex fold and pulling upward prestress cable,and external cable and middle-span preloading weight and so on.As a result,it solves the long-term deflection of large-span beam steel bridge and guarantees the structural safety.
出处
《山西建筑》
2012年第15期169-171,共3页
Shanxi Architecture
关键词
连续刚构桥
长期下挠
跨中对顶合龙
体外预应力索
continuous steel bridge
long-term deflection
middle-span and opposite-vertex fold
external prestress cable
