Fig 3 - uploaded by Nikolett Rehany
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The location of the vertical control lines (thin lines) with respect to the tunnels (thick parallel lines).
Source publication
The effect of the construction of the 4th subway line of Budapest (Metro4) on the potential surfaces of the gravity field has been investigated from the aspects of monitoring vertical deformation. In the study mass loss due to the excavation of the two tunnels and of the stations has been considered. Practically, the effect of the mass loss on leve...
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Citations
... The method of performing geodetic works when observing subsidence and deformations of engineering structures is well studied and reflected in the works of Uzbek and foreign scientists geodesists [1,2,4], as well as in the relevant regulatory documents [7,8]. According to most recent investigations, the precise observation of the subsidence (vertical monitoring) is very critical not only from the precision of the observation technology, but also from the variations of the environment, such as temporal variations of the reference horizontal level, or the geoid [9,10]. ...
... 10) 0-in other cases, When с i ∈ (0,1), and с i = 0 if Н i is not an extreme among all previous values, in the opposite case с i = 1[5], i.e.0 ≤ [с] ≤ n -1(11)Comment 1. If the elevations (subsidence) of all points are equal, (H 1 = H 2 =...H n-1 = H n or S 1 =S 2 =...=S n-1 =S n ), then [c] = 0, if they change monotonically or their oscillations alternate, systematically increasing or decreasing, then [с] = n -1. ...
To improve the quality of construction and increase the durability of engineering structures under construction, complex geodetic works should be performed, including geodetic observations of deformations of structures. These observations are carried out during the construction of buildings and structures and their operation, mainly before the period of deformation stabilization. In this regard, a reliable statistical definition of deformations close to the limit is necessary, based on the data of geodetic observations. The research helps to improve the definition of deformations of structures using the Fischer’s F-test and the Foster-Stuart test, based on analysis of the measurements of horizontal and vertical monitoring of industrial structures. According to the results, the magnitude of the subsidence plays a more significant role from than its absolute value, thus the value of the deformation intensity is of primary importance in justifying observation periodicity.
