Seismic Test and Simulation of Spring Vibration Isolated Foundation for Turbo-Generator
The 1 : 8 model of turbo-generator vibration isolated foundation of common islands in nuclear plants was established for vibration characteristic tests and pseudodynamic experiments. The finite element model was established by SeismoStruct for time-history analysis. Frequencies, modal shapes and sei...
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| Format: | Article |
| Language: | English |
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Wiley
2021-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2021/8884920 |
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| author | Dong An Tianwang Liu |
| author_facet | Dong An Tianwang Liu |
| author_sort | Dong An |
| collection | DOAJ |
| description | The 1 : 8 model of turbo-generator vibration isolated foundation of common islands in nuclear plants was established for vibration characteristic tests and pseudodynamic experiments. The finite element model was established by SeismoStruct for time-history analysis. Frequencies, modal shapes and seismic responses, deformation curves, and spring deformations were compared and analyzed. Results from tests and experiments show that the natural frequencies of spring vibration isolation foundation are lower than those of common frame foundations and the vertical frequencies are far from the working disturbance frequency of the turbo-generator units. The spring vibration isolation device can reduce the acceleration response of the TG (turbo-generator) deck and redistribute the horizontal earthquake action of the foundation according to the stiffness to give full play to the seismic capacity of the columns. The errors of natural vibration frequencies and maximum seismic response are approximately 15% and 10%, respectively, and the simulation results are in good agreement with the test and experiment data. The proportion and distribution of spring deformation are close, and the test study shows the convenient and precise realization of the simulation. Results of seismic experiments and numerical simulations show that the foundation design meets the standard of the “Code for Seismic Design of Buildings” in China, which realizes the goal of spring vibration isolation and seismic resistance. The foundation design is also reasonable, safe, and reliable. |
| format | Article |
| id | doaj-art-bd1a449fcb064bab8db5897d83c6ff82 |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-bd1a449fcb064bab8db5897d83c6ff822025-02-03T00:58:44ZengWileyShock and Vibration1070-96221875-92032021-01-01202110.1155/2021/88849208884920Seismic Test and Simulation of Spring Vibration Isolated Foundation for Turbo-GeneratorDong An0Tianwang Liu1School of Civil Engineering, North China University of Technology, Beijing 100144, ChinaSchool of Civil Engineering, North China University of Technology, Beijing 100144, ChinaThe 1 : 8 model of turbo-generator vibration isolated foundation of common islands in nuclear plants was established for vibration characteristic tests and pseudodynamic experiments. The finite element model was established by SeismoStruct for time-history analysis. Frequencies, modal shapes and seismic responses, deformation curves, and spring deformations were compared and analyzed. Results from tests and experiments show that the natural frequencies of spring vibration isolation foundation are lower than those of common frame foundations and the vertical frequencies are far from the working disturbance frequency of the turbo-generator units. The spring vibration isolation device can reduce the acceleration response of the TG (turbo-generator) deck and redistribute the horizontal earthquake action of the foundation according to the stiffness to give full play to the seismic capacity of the columns. The errors of natural vibration frequencies and maximum seismic response are approximately 15% and 10%, respectively, and the simulation results are in good agreement with the test and experiment data. The proportion and distribution of spring deformation are close, and the test study shows the convenient and precise realization of the simulation. Results of seismic experiments and numerical simulations show that the foundation design meets the standard of the “Code for Seismic Design of Buildings” in China, which realizes the goal of spring vibration isolation and seismic resistance. The foundation design is also reasonable, safe, and reliable.http://dx.doi.org/10.1155/2021/8884920 |
| spellingShingle | Dong An Tianwang Liu Seismic Test and Simulation of Spring Vibration Isolated Foundation for Turbo-Generator Shock and Vibration |
| title | Seismic Test and Simulation of Spring Vibration Isolated Foundation for Turbo-Generator |
| title_full | Seismic Test and Simulation of Spring Vibration Isolated Foundation for Turbo-Generator |
| title_fullStr | Seismic Test and Simulation of Spring Vibration Isolated Foundation for Turbo-Generator |
| title_full_unstemmed | Seismic Test and Simulation of Spring Vibration Isolated Foundation for Turbo-Generator |
| title_short | Seismic Test and Simulation of Spring Vibration Isolated Foundation for Turbo-Generator |
| title_sort | seismic test and simulation of spring vibration isolated foundation for turbo generator |
| url | http://dx.doi.org/10.1155/2021/8884920 |
| work_keys_str_mv | AT dongan seismictestandsimulationofspringvibrationisolatedfoundationforturbogenerator AT tianwangliu seismictestandsimulationofspringvibrationisolatedfoundationforturbogenerator |