Paper Title:

Modal Experiment Research on Fluid-Solid Coupling Vibration of Hydraulic Long-Straight Pipeline of Shield Machine

Periodical Applied Mechanics and Materials (Volumes 105 - 107)
Main Theme Vibration, Structural Engineering and Measurement I
Edited by Paul P. Lin and Chunliang Zhang
Pages 286-293
DOI 10.4028/www.scientific.net/AMM.105-107.286
Citation Jing Hua Xie et al., 2011, Applied Mechanics and Materials, 105-107, 286
Online since September, 2011
Authors Jing Hua Xie, Ke Tian, Li He, Tian Ren Yang, Xiang Heng Zhu
Keywords Fluid-Solid Coupling, Modal Experiment, Natural Frequency, Shield Machine
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Abstract

The hydraulic long-straight pipeline system of the shield machine is to be studied in this paper. Modal parameters of the hydraulic long-straight pipeline whose length is 8m under three kinds of spans (single span, double spans and four spans) were measured and analyzed. Considering the inherent vibration characteristics of the shield machine, we limited the natural frequency of the multi-span long straight pipeline studied within the range of 0~ 200Hz.What the experiment shows is as follows: Firstly, the natural frequency of the hydraulic long-straight pipeline is densely distributed mainly in the low frequency; Secondly, the natural frequencies of vibration in the horizontal plane are slightly higher than those of corresponding orders in the vertical plane, although the difference is little; In addition, by increasing the number of supports, pipeline span can be reduced and the natural frequencies of pipeline can be significantly increased, but this will make the vibration mode change irregularly.