METHOD FOR DETERMINING CONDITION OF BEAMS AND DEVICE FOR REALIZATION OF SAID METHOD

FIELD: building and construction. ^ SUBSTANCE: to increase precision of determining pile condition, mechanical excitation of pile is realized by hydrodynamic strike with spark break-through of inter-electrode emitter portion, mounted on pile head. Resilient oscillation receivers are mounted on end a...

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Hauptverfasser: ARKHIPOV A.G, CHERNYSHEV I.D, IVASHEV V.K, DAVYDOV P.A
Format: Patent
Sprache:eng ; rus
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Zusammenfassung:FIELD: building and construction. ^ SUBSTANCE: to increase precision of determining pile condition, mechanical excitation of pile is realized by hydrodynamic strike with spark break-through of inter-electrode emitter portion, mounted on pile head. Resilient oscillation receivers are mounted on end and side surfaces of pile. Receiver on side surface is mounted slanted relatively to pile axis. When separating echo-signal, reflected from pile bottom, spectral analysis is used and digital filtering of signal in certain frequencies range. To estimate condition of pile its planned length is compared to real length, determined from measurements data, and quality of pile material is determined from results of comparison of measured and planned speeds of resilient waves. Device for determining condition of pile has block for mechanical excitation of pile made in form of tank filled with electric-conductive liquid, with coaxial electrodes, connected using coaxial cable to high-voltage energy accumulator. Measuring device is provided with two resilient waves receivers. ^ EFFECT: higher precision, simplified construction, lower costs, broader functional capabilities, higher efficiency. ^ 2 cl, 4 dwg