The Hydrostatic Level Method for Continuous Monitoring of Building Foundations

Шардаков, И. Н.; Shestakov, A.; Tsvetkov, R. V.; Yepin, V.

doi:10.4028/www.scientific.net/ssp.243.105

Cited by 14 publications

(6 citation statements)

References 9 publications

(8 reference statements)

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“…23 Therefore, it is necessary to revise the acceleration of gravity with latitude. According to the research of Jiang, 23 the acceleration of gravity at a certain latitude can be calculated by equation (12).…”

Section: Modification Of Acceleration Of Gravitymentioning

confidence: 99%

“…Hydrostatic Levelling System (HLS) 11 is already widely used in the field of settlement measurement such as monitoring of building foundation, 12 deformation monitoring of subway tunnels, 13 height measurement dam, 14 and high precision alignment of particle accelerator. 15 However, the traditional hydrostatic levelling system, developed according to the law of connected vessels, cannot completely overcome the inaccuracies caused by the curvature of earth, tide, evaporation of transmission liquid, et al 11,16 Additionally, the traditional hydrostatic levelling system needs to increase the size of sensor to meet the wide range measuring requirement for substructure settlement measurement of the highspeed railways among mountainous areas, which makes it inapplicable for the measurement of internal settlement of substructures.…”

Section: Introductionmentioning

confidence: 99%

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A new automatic measurement system for high-speed railway substructure settlement based on hydrostatic pressure difference levelling

Qian

Shen

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part F:

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Exact settlement measurement of substructures plays an important role in their status detection throughout all-life-cycle of high-speed railway. A Hydrostatic Pressure Difference Levelling system (HPDL) is developed based on the mechanism that pressures of any two points at different elevations in incompressible static liquid are different. The approach accounts for a hyperbolic variation in the density of the pressure transmission liquid with temperature, variation in the earth’s gravitational field and the elevation at the measurement point. High accuracy capacitive differential pressure transmitters are adopted owing to their high sensitivity, temperature-insensitive, low energy consumption, and sensing stability. The HPDL results are verified with settlement values measured by the precise level. It was demonstrated that the HPDL results correlate well with the precise level and can be considered as an effective method to measure the settlement of high-speed railway substructures.

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Section: Modification Of Acceleration Of Gravitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A new automatic measurement system for high-speed railway substructure settlement based on hydrostatic pressure difference levelling

Qian

Shen

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part F:

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“…To measure the inclination of individual building, we use the data obtained when recording the relative settlements of the characteristic points of its basement. We have developed an automated system of deformation monitoring of the individual building, based on the method of hydrostatic leveling [14]. The measurement of the difference in vertical displacements makes it possible to evaluate the inhomogeneous deformations of the basement, and also to observe the change in the position of the foundation as a rigid body.…”

Section: Fig 1 the Scheme Of Changes Of The Earth's Surface Overlyimentioning

confidence: 99%

Control of surface subsidence based on building deformation monitoring data

et al. 2019

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This paper presents an approach to the estimation of ground surface distortion based on the data from the online deformation monitoring systems mounted on the foundations of the group of buildings located in the area of ground instability. The local monitoring systems provide control of building foundation settlements using the hydrostatic level measurement technique. These data are used to calculate the inclination foundation angles which reflect the distortion of the earth's surface at local points. The hydrostatic level system allows one to perform measurements with the desired space and time sampling and to obtain a quite detailed picture of the changes in the deformation parameters over time. A set of such local monitoring units forms a distributed system that allows monitoring the state of the earth's surface over a large area. Here, we present long-term results obtained using such system located in the city area above mining. The evolution of the inclination angles of the group of overlying buildings is shown. We discuss the validity of this approach, and estimate the accuracy of the measuring method and the factors that influence it. Finally, we assess the possibility of making short-term predictions of deformation processes inside the rock massif.

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“…A change in the vertical distance from this plane to various points of the object corresponds to an uplift and settlement of the structure elements. The hydrostatic leveling systems (HLS) are used not only for controlling the geophysical processes but also for monitoring various structures such as building foundations 6‐8 and tunnels 9‐11 . The number of sensors used and their location provide the necessary spatial resolution for recording the vertical displacement fields without the need to provide direct visibility between the elements of the system.…”

Section: Introductionmentioning

confidence: 99%