连续刚构桥对顶合龙技术研究

Counter-thrust Technique for Midspan Closure of Continuous Rigid Frame Bridge

阐述了对顶合龙的技术原理,给出了对顶位移量的确定原则和对顶力大小的简化计算公式,探讨了对顶合龙实施中的技术要点,最后通过一项工程实例分析,说明了对顶合龙技术对桥墩变形及受力的改善效果。

The principle of the counter-thrust technique is expounded in this paper. The method for determining the relative displacement is discussed and a simplified formula for the counter-thrust force is derived. The technical points for construction are also delineated. A case study is exemplified to justify the effectiveness of the counter-thrust technique.