Experimental analysis of prestressed pipelines vibrations
Keywords:
pipeline, dynamic characteristic, prestress, coil parametersAbstract
The data of experimental analysis of prestressed pipelines vibrations under the action of dynamic loads are presented. Resistance strain gages are used as a sensing device for strains measure. Direct – writing oscillograph and amplifier are used for secondary gaging equipment. The measurements of dynamic displacements are carried out by ring transducer. Shaker is used to excite the structure vibrations. The parameters of the structure free vibrations (eigenfrequencies and damping decrement) are investigated experimentally. The influence of the prestress in pipelines on this parameters is analyzed. The influence of the wire winding on strength and dynamics of pipelines is investigated experimentally. It is shown that the wire winding on the pipeline can be used to protect the structure on seismic excitation. It is possible to drive the dynamic properties of the structure by selection of the pipeline taping parameters. The majority phenomena, which are discussed in this paper, can not be obtained by numerical computations.
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Copyright (c) 2016 А. И. Айнабеков, У. С. Сулейменов, У. С. Сулейменов, К. В. Аврамов, К. В. Аврамов, А. Б. Молдагалиев, А. Б. Молдагалиев, М. А. Камбаров, М. А. Камбаров, Т. Т. Серикбаев, Т. Т. Серикбаев, Х. А. Абшенов, Х. А. Абшенов
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