Vibration Test and Control of Factory a Building under Excitation of Multiple Vibrating Screens
Abstract
:1. Introduction
2. Field Vibration Monitoring and Modal Analysis of Factory Buildings
2.1. Engineering Background
2.2. Field Vibration Monitoring
2.3. Modal Testing
3. Numerical Simulation of Vibration Response
3.1. Model Building
3.2. Finite Element Model Verification
4. Vibration Control of the Structure
4.1. Vibration Reduction Scheme
4.2. Analysis of Vibration Reduction Effect
5. Discussion
6. Conclusions
7. Patents
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Number | Details of Monitoring |
---|---|
1 | The peripheral beam–plate of single vibrating screen under no-load state |
2 | The peripheral beam–plate of single vibrating screen under heavy-load state |
3 | The peripheral beam–plate of multiple vibrating screens under no-load state |
4 | The steel frame supports on the third floor of multiple vibrating screens under no-load state |
5 | The west-half beam on the third floor of multiple vibrating screens under no-load state |
6 | The longitudinal beam on the third floor of multiple vibrating screens under no-load state |
7 | The east longitudinal beam on the second floor of multiple vibrating screens under no-load state |
8 | Vibrating screen support of multiple vibrating screens under heavy-load state |
9 | The east longitudinal beam–plate of multiple vibrating screens under heavy-load state |
10 | Longitudinal beam–plate on the west side of the third floor of multiple vibrating screens under heavy-load state |
Number | Details of Monitoring |
---|---|
11 | Vibrating screen support of single vibrating screen under no-load state |
12 | The peripheral beam–plate of single vibrating screens under no-load state |
13 | The peripheral beam–plate of multiple vibrating screens under no-load state |
14 | The steel frame supports on the third floor of multiple vibrating screens under no-load state |
15 | The west-half beam on the third floor of multiple vibrating screens under no-load state |
16 | The north–south longitudinal beam of the third floor of multiple vibrating screens under heavy-load state |
Number | Measuring Points (North Part) | Measuring Direction | Number | Measuring Points (South Part) | Measuring Direction | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1 | 1 | 2 | 3 | 4 | 5 | 6 | Z+/Y+ | 1 | 1 | 2 | 3 | 4 | 5 | 6 | Z+/X+ |
2 | 1 | 2 | 3 | 4 | 5 | 6 | Z+/X+ | 2 | 1 | 2 | 3 | 4 | 5 | 6 | Z+/Y+ |
3 | 1 | 7 | 8 | 9 | 10 | 11 | Z+/Y+ | 3 | 1 | 7 | 8 | 9 | 10 | 11 | Z+/X+ |
4 | 1 | 7 | 8 | 9 | 10 | 11 | Z+/X+ | 4 | 1 | 7 | 8 | 9 | 10 | 11 | Z+/Y+ |
5 | 1 | 12 | Z+/X+/Y+ | 5 | 1 | 12 | 13 | 14 | 15 | 16 | Z+/X+ | ||||
6 | 1 | 13 | 14 | 15 | 16 | 17 | Z+/Y+ | 6 | 1 | 12 | 13 | 14 | 15 | 16 | Z+/Y+ |
7 | 1 | 13 | 14 | 15 | 16 | 17 | Z+/X+ | ||||||||
8 | 1 | 18 | 19 | 20 | 21 | 22 | Z+/Y+ | ||||||||
9 | 1 | 18 | 19 | 20 | 21 | 22 | Z+/X+ | ||||||||
10 | 1 | 23 | 24 | Z+/X+/Y+ |
Modality | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
---|---|---|---|---|---|---|---|
Frequency (Hz) | 0.738 | 2.673 | 3.179 | 9.948 | 12.467 | 15.748 | 16.591 |
Damping ratio (%) | 4.953 | 1.704 | 0.186 | 1.438 | 0.730 | 0.379 | 0.101 |
Modality | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
---|---|---|---|---|---|---|---|---|
Frequency (Hz) | 1.987 | 3.729 | 4.449 | 5.644 | 6.359 | 10.944 | 12.553 | 14.837 |
Damping ratio (%) | 0.056 | 1.173 | 1.045 | 2.596 | 1.502 | 1.158 | 0.442 | 0.424 |
Mode | Mode Description | Frequency (Hz) | Error (%) | |
---|---|---|---|---|
Measured | Simulation | |||
1 | Bending in Y-direction | 1.96 | 1.97 | 0.10 |
2 | Bending in X-direction | 1.97 | 2.00 | 1.73 |
3 | Torsion in the X-Y plane | 2.64 | 2.80 | 5.99 |
4 | Second-order bending in Y-direction | 4.48 | 4.38 | −2.12 |
5 | Second-order bending in X-direction | 4.62 | 4.57 | −1.00 |
6 | First-order bending of steel frame in X-direction on the third floor | 5.64 | 5.50 | −2.53 |
7 | Second-order bending in X-direction of the concrete/steel frame | 5.81 | 5.78 | −0.48 |
8 | Second-order torsion in X-Y plane of the concrete/steel frame | 6.36 | 6.30 | −0.90 |
9 | Torsion in X-Y plane of steel frame | 10.94 | 10.51 | −3.97 |
10 | First-order bending beam–plate in Z-direction | 12.55 | 11.84 | −5.68 |
11 | Second-order bending of beam–plate in Z-direction | 14.84 | 14.94 | 0.69 |
Mode | Mode Description | Frequency (Hz) | Error (%) | |
---|---|---|---|---|
Measured | Simulation | |||
1 | Bending in Y-direction | 1.99 | 1.97 | −1.01 |
2 | Bending in X-direction | 1.99 | 2.1 | 5.53 |
3 | Torsion in the X-Y plane | 2.62 | 2.97 | 13.36 |
4 | Second-order bending in Y-direction | 4.85 | 4.65 | −4.12 |
5 | Second-order bending in X-direction | 5.06 | 4.77 | −5.73 |
6 | First-order bending of steel frame in X-direction of the third floor | 5.76 | 5.75 | −0.17 |
7 | Second-order torsion in X-direction of the concrete-steel frame | 6.42 | 6.97 | 8.57 |
8 | Bending of steel frame in X-direction of the second floor | 7.66 | 7.40 | −3.39 |
9 | Torsion in the X-Y plane of steel frame | 9.95 | 10.55 | 6.03 |
10 | Bending in Z-direction of beam–plate of the second floor | 12.47 | 12.05 | −3.37 |
11 | Bending in Z-direction of beam–plate of the third floor | 15.74 | 14.69 | −6.67 |
Directions | Damping Coefficient (kN/(mm/s)) | Velocity Index |
---|---|---|
X | 10 | 1 |
Y | 10 | 1 |
Z | 28 | 1 |
Scheme | Vibrating Screens Number | Structure Location |
---|---|---|
1 | 2, 3 | Under the beam of the east support of the vibrating screens |
2 | 1, 4 | |
3 | 1, 2, 3, 4 |
Point | Acceleration Vibration Reduction Rate (%) | Velocity Vibration Reduction Rate (%) | Displacement Vibration Reduction Rate (%) | ||||||
---|---|---|---|---|---|---|---|---|---|
Damping | Isolation | Absorption | Damping | Isolation | Absorption | Damping | Isolation | Absorption | |
56 | 82.50 | 80.98 | 84.75 | 83.12 | 80.92 | 81.28 | 83.55 | 80.99 | 77.03 |
60 | 64.22 | 80.98 | 94.49 | 66.60 | 80.94 | 94.76 | 68.79 | 80.99 | 94.00 |
96 | 74.62 | 80.98 | 84.01 | 74.39 | 80.98 | 80.67 | 75.54 | 81.03 | 77.58 |
⋯ | |||||||||
490 | 82.71 | 80.95 | 92.14 | 83.88 | 80.96 | 92.64 | 84.35 | 80.95 | 91.85 |
491 | 78.52 | 80.97 | 92.82 | 78.77 | 80.97 | 92.57 | 78.53 | 80.97 | 90.37 |
492 | 82.62 | 80.95 | 92.10 | 83.79 | 80.94 | 92.59 | 84.26 | 80.95 | 91.62 |
Scheme | Cost | Construction Period | Comprehensive | Vibration Reduction Rate |
---|---|---|---|---|
Vibration damping | The purchase of dampers and the design and construction of support columns | Need to consider the design of the support column, the construction period and the purchase period of the damper | Moderate cost and long construction period | More than 70% |
Vibration isolation | Procurement and installation of vibration isolation frame | Purchase and installation cycle of vibration isolation frame | Moderate cost and short construction period | More than 80% |
Vibration absorption | Design and processing of vibration absorber (needs to be customized) | Vibration absorber design, custom processing and installation cycle | High cost and long construction period | More than 90% |
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Yu, J.; Li, Z.; Zhang, Z.; Zhao, W.; Niu, Z.; Cheng, J. Vibration Test and Control of Factory a Building under Excitation of Multiple Vibrating Screens. Buildings 2022, 12, 607. https://doi.org/10.3390/buildings12050607
Yu J, Li Z, Zhang Z, Zhao W, Niu Z, Cheng J. Vibration Test and Control of Factory a Building under Excitation of Multiple Vibrating Screens. Buildings. 2022; 12(5):607. https://doi.org/10.3390/buildings12050607
Chicago/Turabian StyleYu, Jianxin, Zhenzhen Li, Zhenhua Zhang, Wusheng Zhao, Zhiwei Niu, and Jingji Cheng. 2022. "Vibration Test and Control of Factory a Building under Excitation of Multiple Vibrating Screens" Buildings 12, no. 5: 607. https://doi.org/10.3390/buildings12050607