Study on the coupling vibration characteristics of vertical unit and plant of large underground pumping station for water transfer project

To investigate the coupled vibration characteristics of vertical pumping unit and plant structure of large underground pumping station for water transfer project, the coupled vibration differential equations are established. The structure nodes of are simplified from horizontal direction and vertica...

Full description

Saved in:
Bibliographic Details
Published in:Journal of physics. Conference series 2024-06, Vol.2752 (1), p.12114
Main Authors: Lu, Shaopeng, Wang, Tao, Zhang, Haili, Wang, Yuchuan, Fan, Honggang
Format: Article
Language:English
Subjects:
Coupled modes
Coupling
Differential equations
Horizontal orientation
Parameters
Pumping stations
Resonant frequencies
Spectrum analysis
Stiffness
Underground structures
Vertical forces
Vertical loads
Vibration
Vibration analysis
Vibration mode
Vibration response
Water transfer
White noise
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:To investigate the coupled vibration characteristics of vertical pumping unit and plant structure of large underground pumping station for water transfer project, the coupled vibration differential equations are established. The structure nodes of are simplified from horizontal direction and vertical direction respectively by force. The structural parameters and load parameters of the model are analyzed and calculated, and the vibration response of each node are calculated by solving the vibration differential equations. A spectral analysis of white noise is applied to the coupled model, and the natural frequencies and vibration structures of dominant vibration modals are obtained. Research indicates that the vertical vibration modes of the system exhibit a relatively low coupling degree with the plant structure. The shaft system and the plant structure mainly display combined vertical vibrations, while the plant structure predominantly exhibits independent vertical vibrations. This implies that vertical vibrations are jointly influenced by shaft system stiffness and plant structure properties. In horizontal vibration modes, a strong coupling characteristic is observed between the upper structure of the pump station unit and the plant structure. This is primarily manifested as coupled vibrations between the support and the plant structure, which are collectively influenced by support constraints, shaft system stiffness, and plant structural properties.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/2752/1/012114