Foundation Selection and Seismic Performance of Steam Turbine

doi:10.16183/j.cnki.jsjtu.2018.302

Abstract

Abstract: To determine the foundation form and seismic performance of a nuclear steam turbine, this paper established a three-dimensional finite element model of integral structure of the turbine by using LS-DYNA finite element program and comprehensively analyzed the foundation selection problem and the overall seismic resistance of the turbine. The results show that in the rigid foundation and spring foundation of current nuclear power equipment, the spring foundation is more suitable to be used as the foundation of the nuclear steam turbine for its better seismic performance. When the spring foundation is chosen as the foundation of the nuclear steam turbine, the entire structure can meet the seismic requirements at frequently occurred earthquake of 8 degree seismic precautionary intensity. However, at rarely occurred earthquake of 8 degree seismic precautionary intensity, the seismic performance of the structure should be improved because the deformation of some structures of the steam turbine is too large and the internal force does not meet the requirements of its own strength and seismic requirements.

Key words: steam turbine, foundation selection, seismic performance, dynamic time history analysis

CLC Number:

TV 312

WANG Wei, LU Sikui, YANG Chengzhong, XU Sihua, CHEN Jinjian. Foundation Selection and Seismic Performance of Steam Turbine[J]. Journal of Shanghai Jiaotong University, 2020, 54(7): 736-744.

References

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