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一、概述目前,国内工程施工一般采用全站仪或经纬仪,根据设计单位提供的轴线网点坐标进行直接施工轴线控制网点布设。但铁路站房施工由于涉及线路过长,沿线地形复杂,障碍物多,控制桩点不易布设,一般设计单位所提供的布设桩点距离施工工点为(2~3)km,超出了全站仪、经纬仪的工作准确度和控制范围,即使通过转站引至施工现场也是费时费力且无法保证准确度。本文试图通过铁路站房工程测设,说明运用全球定位系统(GPS)技术具有准确度高、速度快、不受气候条件及通视条件限制等优点;另外GPS接收机还具
I. Overview At present, the general construction of the domestic total station or theodolite, according to the coordinates provided by the design unit to carry out the construction of direct axis of control network layout. However, due to the length of line involved, complex terrain along the route, many obstacles and the difficulty in laying control points, the layout points provided by general design units are (2 ~ 3) km away from the construction site Instrument, Theodolite’s work accuracy and control range, even lead to the construction site through the transfer station is time-consuming and can not guarantee the accuracy. This article attempts to set the railway station engineering survey, indicating the use of global positioning system (GPS) technology with high accuracy, fast, free from climatic conditions and viewing conditions and other advantages; other GPS receivers also