Stabilization of an abutment under a rigidly fixed bridge by holographical-speckle interferometry
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چکیده
منابع مشابه
Earth Pressure behind an Integral Bridge Abutment and Comparison with that behind a Conventional Bridge Abutment under Traffic Loads
Integral bridges are gaining increased popularity because of both economic and fast construction associated with the omission of bearing supports and expansion joints. In the present study the cyclic earth pressure behind integral bridge abutments under traffic surcharges are investigated and compared with that induced behind the abutment of conventional bridges (with isolated deck and abutme...
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One of the most commonly discussed problems regarding bridges with integral abutments is the influence of longitudinal elongation of the superstructure as a result of seasonal temperature variations. A bridge built with integral abutments is often supported by a row of piles made of steel or concrete. The longitudinal elongation of the superstructure induces a displacement and a rotation at the...
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Speckling is an interference effect invariably present when highly coherent light is scattered by the different elements of an optically rough surface (roughness ~ " J '" = wavelength). Speckle patterns appear everywhere in space, but interest centres on the image a nd Fourier transform planes. The lateral dime n sion of i ndiv idual speckles is determin ed by the interference of waves from the...
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Application of the holographic interferometry and speckle photography in the primary stability determination of a mandible undergoing the bilateral sagittal split osteotomy (BSSO) is described. Measurements were carried out on Synbone models of human mandibles representing three different techniques of stabilisation. The maximum value criterion of the cut edge displacement components was used f...
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Electronic speckle pattern interferometry (ESPI) was used for the evaluation of mechanical properties of automobile tires. The tire on wheel disc was fixed on the holder and its vibration was generated by loudspeaker. Vibrational field of the whole tire was visualized by ESPI and recorded into PC. Natural frequencies of various vibrational modes were measured and results were compared with thos...
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ژورنال
عنوان ژورنال: Journal of Zhejiang University SCIENCE B
سال: 2007
ISSN: 1673-1581,1862-1783
DOI: 10.1631/jzus.2007.b0416