Design and analysis of a multi-sensor deformation detection system

Szostak-Chrzanowski, Anna; Chrzanowski, Adam; Nian-wu, Deng; Bazanowski, Maciej

doi:10.1515/jag.2008.023

Cited by 5 publications

(2 citation statements)

References 5 publications

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“…Some authors use GNSS techniques [14,15], interferometric synthetic aperture radar (InSAR) methods [16][17][18][19], spirit leveling [20,21] and motorized control total stations systems [9,22]. In [23] noted that to make intelligent decisions on the selection of the optimal combination of the sensors, their optimal location and density, the design must be based not only on the geometrical strength and sensitivity of the monitoring network, but also on a good understanding of the physical process which leads to deformation. In our opinion, the applying of mechanical vibrations from operating industrial sources is another opportunity to assess the object state especially in conditions of high levels of industrial vibrations and electrical noise and built-up areas.…”

Section: Introductionmentioning

confidence: 99%

The earth-fill dam state express investigation using mechanical vibrations produced by HPP

Antonovskaya

Kapustyan

2022

Frattura Ed Integrità Strutturale

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The usage of mechanical vibrations produced by the hydropower plant (HPP) turbine may be used for seismic sounding of large-scale constructions as the earth-fill dam and its abutment contacts. Such vibrations are monochromatic oscillations on main frequencies and their harmonics produced by turbine. Seismic sensors installed on the dam's crest and inside it, if it possible, and in the area of abutment contacts register microseisms include HPP turbine operation vibrations which may be extracted by seismic data processing, i.e., filtering. We discuss two data processing possibilities: symphonious filter as the hardware one and power spectrum calculation as digital one. We consider the two case of earth-fill dams state investigations. There are the Chiryurt HPP dam (Republic of Dagestan, Russia, 9.5 m high) and the Nurek HPP dam (Tajikistan, 300 m high). We show the possibilities of seismic express investigations using signals of main frequencies produced by HPP turbine for dam sounding. For Chiryurt dam the extra fluid filtering in the central part of the dam was revealed. Nurek dam abutment contact monitoring showed the temporal variation of its stress-strain state associated with deformation variation 10-5-10-6 presumably due to regional seismicity.

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Section: Introductionmentioning

confidence: 99%

The earth-fill dam state express investigation using mechanical vibrations produced by HPP

Antonovskaya

Kapustyan

2022

Frattura Ed Integrità Strutturale

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“…In general, analysis and understanding of deformation (here: in this work refers to vertical deflection) of any type of a deformable body (here: beam) includes geometrical measurement and analysis and physical computation and interpretation [6]. Geometrical measurement and analysis provide in-situ or field information about the change in shape and dimensions of the monitored or observed body/object, as well as its rigid body motions (scales, translations, shears, and rotations).…”

Section: Introductionmentioning

confidence: 99%

Effect of Soil Stiffness on the Design Parameters of Stiffened Raft Foundation on a Highly Expansive Soil

Omer¹,

Elarabi²,

Elsharief³

2022

kuej

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This paper evaluates the effect of soil stiffness on the design parameters of a stiffened raft on an expansive soil of high potential for swelling. The evaluation was based on a finite element program originally developed by Wray [8]. The input soil parameters were measured in the laboratory for a highly expansive soil from Central Sudan. Soil Young’s Modulus was measured at varying moisture conditions using the unconfined compression test. The effects of soil modulus on moments, shear forces and differential deflection were investigated for a case study of a light residential building founded on the tested soil. Evaluation was made using different values of measured and assumed heave and end penetration. Results showed that the modulus of elasticity decreased as water content of the soil increased. The determined results of the finite element program suggested that, generally, the magnitude of longitudinal, traverse moments, shear forces, and differential deflection increased with increase in the soil modulus of elasticity and that the heave values affected the results.

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Multi-sensor approach to settlement analysis of earth dams

Ardalan

Jafari

2011

Comput Geosci

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In this paper, a fusion method for the settlement study of the earth dams based on geodetic and geotechnical data is developed. The developed method can be algorithmically explained as follows: (a) interpolation of the geotechnical data to the epoch of geodetic observations by four degree polynomial fitting, which serves as a low-pass filter. (b) Conversion of the initial observations into time series of the dam heights at the geodetic and geotechnical stations. (c) Fusion of the data from the two sources at different fusion levels. (d) Final decision based on the deformation parameters derived from fused data. The significant innovation of the proposed method centered upon its ability to incorporate geodetic and geotechnical observation types into a one integrated solution through fusion. The method is numerically tested for the Karkhe earth dam by using geodetic and geotechnical data from 1997 till 2009. The numerical evaluation at 229 check points indicates more than 70% improvement in the settlement modeling based on the fusion of the geodetic and geotechnical data, as compared to the settlement modeling based on geotechnical data alone.

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Design and analysis of a multi-sensor deformation detection system

Cited by 5 publications

References 5 publications

The earth-fill dam state express investigation using mechanical vibrations produced by HPP

The earth-fill dam state express investigation using mechanical vibrations produced by HPP

Effect of Soil Stiffness on the Design Parameters of Stiffened Raft Foundation on a Highly Expansive Soil

Multi-sensor approach to settlement analysis of earth dams

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