基于悬臂浇筑法的预应力混凝土连续箱梁桥施工监控研究与实践

Study and practice on construction monitoring for prestressed concrete continuous beam bridge based on cantilever pouring

大跨连续梁桥悬臂浇筑法施工受许多不确定性因素的影响,对施工过程的监测与控制是保证此类桥梁顺利合龙的一种有效措施。结合具体工程实践,详细阐述了大跨连续梁桥的监控思路、方法和执行过程,提出了各施工节段的温度修正、应力计算及高程测定实施细节,以期为今后同类工程提供有益借鉴。

Construction of long span continuous beam bridge with cantilever pouring are more involved in much uncertain factor.To supervision of the construction process is an effective measure to ensure a smooth closure of such a bridge.Practice with specific projects,elaborated the strategy,method and process of construction monitoring for long span continuous beam bridge.Specified many details about temperature corrected,stress calculated and elevation determined for the construction segment,which will provide technical support to the same types of projects for the future.