Using side-point method for increasing the accuracy of surveying network at monitoring engineering structures

Abstract

Geodetic monitoring buildings and structures is a complex and critical task nowadays, that requires high accuracy of measurements. Various methods are used to obtain it when working on various structures. The author describes the technology of using the side-point method to increase the accuracy of creating a surveying network when monitoring stadiums for the World Cup 2018. It is shown that the application of the aforementioned method together with the well-known one of dead distances measuring with total station does not significantly increase the complexity of the work, but provides high measurement precision even under adverse observation conditions. The features of adjusting such measurements are set out in the article. It is also experimentally established that using the side-points method enables increasing the accuracy of measurements by 1,5–2 times when constructing polygonometric traverses. The article may be useful for at specialists monitoring and geodetic control of structure deformation.

Geodetic network for the construction of the high-speed railway line

“…Analyzing the results obtained as a whole, it is possible to draw several main conclusions: the mean square errors in determining the planned coordinates of the layout network for the construction of the railway with speeds up to 400 km/h should not exceed 2.4 mm, which is sufficiently confirmed by the requirements of rules and regulations documents; this accuracy can be achieved by an ordinary electronic tachymeter with angular accuracy 2 "-3" with fixing points of the network plastic reflectors [18], which will eliminate the use of expensive points of forced centering and prism reflectors, thereby reducing the cost of creating a network; construction of a layout network with higher accuracy (as required, for example, by the standard [17]) will lead to the need to use expensive robotic total stations and specialized measuring equipment, i.e., will significantly increase the cost of work of its creation. Construction of the network with lower accuracy will not ensure safe train traffic at speeds up to 400 km/h; for the construction of railroads with speeds up to 400 km/h in the Russian Federation, it is necessary to adjust the existing rules and regulations documents taking into account the above conclusions.…”