摘要
用缆索吊装斜拉扣挂法施工的钢管混凝土拱桥是一种预制拼装自架设结构。在拱肋吊装阶段最为关键的就是拱肋吊装时的线形控制。通过分析拱肋在吊装阶段由于实际吊装温度与设计温度不一致导致的系统温差、扣塔偏位、拱上临时荷载对拱肋控制线形的影响,并且提出系统温差在吊装过程中的修正方法。研究表明控制和减小扣塔偏位和拱上临时荷载,可减小吊装节段对拱肋控制线形的影响,提高拱肋吊装的吊装精度。
The concrete filled steel tube arch bridge that applies cable hoisting cable hanging method to construct is a kind of self-erection structure of precast structure. During the phase of hoisting process, the most pivotal thing is the line form control. By analyzing the influence of system temperature, buckle tower deviation and temporary load on arch on arch rib line form control caused by the inconsistency between actual hoisting temperature and design temperature during the phase of hoisting process; and puts forward the correction method of system temperature difference during the phase of hoisting process. The research shows that controlling and reducing the buckle tower deviation and temporary load on arch can reduce the influence on arch rib line form control during the phase of hoisting process and then enhance the hoisting precision.
出处
《西昌学院学报（自然科学版）》
2015年第3期24-27,共4页
Journal of Xichang University(Natural Science Edition)
关键词
钢管混凝土拱桥
控制线形
系统温差
扣塔偏位
临时荷载
影响因数
concrete filled steel tube arch bridge
control line form
system temperature difference
buckletower deviation
temporary load
influence factor
