Prototype observation and influencing factors of environmental vibration induced by flood discharge

被引：9
作者：
Wang X. [1 ,2 ]
Hu Y.-A. [1 ,3 ]
Luo S.-Z. [1 ]
Zhang L.-C. [1 ]
Wu B. [1 ]
机构：
[1] Hydraulic Engineering Department, Nanjing Hydraulic Research Institute, Nanjing
[2] State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Nanjing Hydraulic Research Institute, Nanjing
[3] Key Laboratory of Navigation Structure Construction Technology of Ministry of Transport, Nanjing Hydraulic Research Institute, Nanjing
来源：
Wang, Xin (xwang@nhri.cn) | 1600年 / Editorial Office of Water Science and Engineering卷 / 10期
基金：
中国国家自然科学基金;
关键词：
Environmental vibration; Flood discharge; Influencing factor; Prototype observation; Vibration characteristics;
D O I：
10.1016/j.wse.2017.03.001
中图分类号：
学科分类号：
摘要：
Due to a wide range of field vibration problems caused by flood discharge at the Xiangjiaba Hydropower Station, vibration characteristics and influencing factors were investigated based on prototype observation. The results indicate that field vibrations caused by flood discharge have distinctive characteristics of constancy, low frequency, small amplitude, and randomness with impact, which significantly differ from the common high-frequency vibration characteristics. Field vibrations have a main frequency of about 0.5–3.0 Hz and the characteristics of long propagation distance and large-scale impact. The vibration of a stilling basin slab runs mainly in the vertical direction. The vibration response of the guide wall perpendicular to the flow is significantly stronger than it is in other directions and decreases linearly downstream along the guide wall. The vibration response of the underground turbine floor is mainly caused by the load of unit operation. Urban environmental vibration has particular distribution characteristics and change patterns, and is greatly affected by discharge, scheduling modes, and geological conditions. Along with the increase of the height of residential buildings, vibration responses show a significant amplification effect. The horizontal and vertical vibrations of the 7th floor are, respectively, about 6 times and 1.5 times stronger than the corresponding vibrations of the 1st floor. The vibration of a large-scale chemical plant presents the combined action of flood discharge and working machines. Meanwhile, it is very difficult to reduce the low-frequency environmental vibrations. Optimization of the discharge scheduling mode is one of the effective measures of reducing the flow impact loads at present. Choosing reasonable dam sites is crucial. © 2017 Hohai University
引用
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页码：78 / 85
页数：7
相关论文
共 16 条
  • [1] Cai Z.X., Huang M.S., Vibration tests on crossing-river tunnel under tidal bore, Chin. J. Geotechnical Eng., 35, s2, pp. 869-873, (2013)
  • [2] Fukada S., Usui K., Yoshimura T., Okada T., Hama H., Kishi T., Effectiveness of dampers in controlling a vibration problem near a highway bridge, J. Civ. Struct. Health Monit., 2, 2, pp. 109-122, (2012)
  • [3] Huang J.L., Li H.K., Safety evaluation and feedback analysis of guide wall structure under flood discharge excitation, Second International Conference on Mechanic Automation and Control Engineering, pp. 6064-6067, (2011)
  • [4] Lee C.L., Wang Y.P., Assessment of vibrations induced in factories by automated guided vehicles, Proc. Institution Civ. Eng. Struct. Build., 166, 4, pp. 182-196, (2012)
  • [5] Lian J.J., Study on flow induced vibration of spillway guide wall, J. Hydraulic Eng., 29, 11, pp. 33-37, (1998)
  • [6] Lian J.J., Ma B., Back analysis algorithm for response of flow-induced vibration in overflow high dam, J. Hydraul. Eng., 38, 5, pp. 575-581, (2007)
  • [7] Perez J.L., Benitez L.H., Oliver M., Climent H., Survey of aircraft structural dynamics nonlinear problems and some recent solutions, Aeronaut. J., 115, 1173, pp. 653-668, (2011)
  • [8] Sanchez D., Salazar J.E., On the effects of water discharge through radial gates at the Caruachi Dam, ASME 2010 10th Biennial Conference on Engineering Systems Design and Analysis, pp. 1-5, (2010)
  • [9] Sharp C., Woodcock J., Sica G., Peris E., Moorhouse A.T., Waddington D.C., Exposure-response relationships for annoyance due to freight and passenger railway vibration exposure in residential environments, J. Acoust. Soc. Am., 135, 1, pp. 205-212, (2014)
  • [10] Shumakova E.M., Kotlyakova A.V., The effect of vibrations in the Zhigulevskii hydropower structure on soils in the nearby territories of Tolyatti City, Water Resour., 37, 3, pp. 306-310, (2010)
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