基于高程异常变化率的伶仃洋大桥跨海高程测量实验与应用  

Experiment and Application of Sea-crossing Elevation Measurement of Lingdingyang Bridge Based on Change Rate of Elevation Anomaly

作　　者：项凡 刘成龙 陈有伟[3] 杨雪峰 XIANG Fan;LIU Chenglong;CHEN Youwei;YANG Xuefeng(Faculty of Geosciences and Environmental Engineering,Southwest Jiaotong University,Chengdu 611756,China;State-province Joint Engineering Laboratory in Spatial Information Technology for High-speed Railway Safety,Chengdu 611756,China;Poly Changda Engineering Co.,Ltd.,Guangzhou 511431,China)

机构地区：[1]西南交通大学地球科学与环境工程学院,四川成都611756 [2]西南交通大学高速铁路运营安全空间信息技术国家地方联合工程实验室,四川成都611756 [3]保利长大工程有限公司,广东广州511431

出　　处：《测绘与空间地理信息》2022年第2期51-54,共4页Geomatics & Spatial Information Technology

基　　金：长江学者和创新团队发展计划(IRT13092)资助。

摘　　要：随着我国大型基础设施建设的不断开展,对于跨海大桥的建设与测量工作提出了新的要求。跨海大桥的高程控制点往往布设于两岸,需要采用跨海高程测量的方法传递到海中测量平台上,传统的跨海高程测量方式为精密测距三角高程测量。但该方法受日光、雨水和雾气、海面宽度等环境因素影响较大,同时由于风力及潮汐的影响,海中平台存在小幅度晃动的现象,想要获得海中测量平台上高程控制点准确的高程需要耗费大量的人力、物力。本文以深中通道——伶仃洋大桥测区为例,探究一种基于高程异常变化率的跨海高程测量方法,经过实验验证,该方法可应用于伶仃洋大桥以及其他高程异常数值变化小且变化具有规律性测区的跨海高程测量。With the continuous progress of our country’s large-scale infrastructure construction, new requirements have been put forward for the construction and survey of cross-sea bridges.The elevation control points of sea-crossing bridges are often arranged on a survey platform in the sea. The traditional elevation measurement method is precise ranging trigonometric leveling.However, this method is greatly affected by environmental factors such as sunlight, rain and fog. Meanwhile, due to the influence of wind and tide, the platform has small amplitude shaking phenomenon.It takes a lot of manpower and material resources to get the accurate elevation.This article takes the Lingdingyang Bridge survey area as an example to explore a method of sea-crossing elevation measurement based on the change rate of elevation anomaly. After experimental verification, the method can be applied to the cross-sea elevation measurement of Lingdingyang Bridge and other areas with small and regular elevation anomalies.

关 键 词：高程异常变化率 精密测距三角高程测量 跨海高程测量 伶仃洋大桥 

分 类 号：P216[天文地球—测绘科学与技术]