双河口特大桥主墩的施工监测与分析

Construction survey Control and analysis of the shuanghekou big bridge leading pier

在跨V形河谷的大型梁式桥高墩的施工中,墩位测设精度、墩身垂直度及墩顶标高的施工控制难度大。结合双河口特大桥162.658m主墩的施工测量,介绍了大跨度梁桥高墩施工控制测量的方案,以及在工程实际操作中的具体操作方法和注意事项,并讨论了控制技术的合理性。

during the construction of high - pier of big bridge which crosses V - shape valley, it is very difficult to get high accuracy in the pier position survey, perpendicular survey and scale height survey, with reference to the construction survey of the shuanghekou big bridge＇s 162.658 meter leading pier, the paper presents the whole construction survey project of the large span bridge with horizontal beam, and put main emphasis to the method of operation and matters needing attention which will he happen in real practice. Do some analysis about the rationality of the survey project . The experience of the bridge can he offer reference to the construction of other similar kind of long span bridges.