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| A method for the enhancement structural seismic capability based on redundancy and vulnerability |
| Received:July 30, 2020 Revised:December 28, 2020 |
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| DOI：10.7511/jslx20200730001 |
| KeyWord:seismic performance strain energy redundancy vulnerability skeletal structure |
| Author | Institution |
| 朱南海 |
江西理工大学 土木与测绘工程学院, 赣州 |
| 李杰明 |
江西理工大学 土木与测绘工程学院, 赣州 |
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| Abstract: |
| To improve the overall performance and seismic performance of a structure, and to assess the fragility of structural members and their failure effort on the structural overall performance under earthquake, two evaluation indexes were established to measure the vulnerability and redundancy of structural member based on the sensitivity of strain energy of members to modulus of elasticity of the materials, as well as the changes in the structural strain energy after damage.Then the differences in redundancy and vulnerability of structural members were considered, and the members with high vulnerability and low redundancy were strengthened, the ones with low vulnerability and high redundancy were weakened by adjusting the cross-section areas of the members.The results show that the redundancy and vulnerability of these structural members can reflect the fragility and the influence of their failure on the structure's overall performance correctly.By adjusting the cross-section areas of members according to the differences in their redundancy and vulnerability, the overall performance and seismic performance of the structure can be enhanced effectively. |