摘要
介绍了跨陇海铁路郑州-西安段黄龙村大跨连续梁桥以及跨京珠高速公路武汉-广州段三王石大跨连续梁桥的施工监控思路、方法和执行过程,通过分析影响监控结果的影响因素,制定了合理的施工监控方案。并通过对这两座相同桥梁的监控实践提出了一种有效的应力控制理论,即"界限控制法"和"增量控制法"。详细介绍了监控过程中需要注意的问题和监测常用设备,这为以后大跨预应力混凝土连续梁桥的施工提供了有益的借鉴。
The strategy, method and process of construction monitoring for Huanglongcun large span continuous beam bridge which flies over Long-Hal Railway and Sanwangshi large span continuous beam bridge which flies over Jing-Zhu Highway are introduced in this paper. By analyzing the factors which may influence the monitoring result, the reasonable monitoring scheme is made. Through these two bridges＇ practice on construction monitoring, an effectual theory about stress monitoring is proposed, i. e. , ＂boundary control method＂ and ＂increment control method＂. Also introduced in this paper are some problems that should be considered in monitoring process and monitoring conventional equipment, which may be of reference value for the construction of large span prestressed concrete continuous beam.
关键词
连续梁
悬臂施工
施工监控
continuous beam
cantilever construction
construction monitoring
