Improved analysis method for structural members subjected to blast loads considering strain hardening and softening effects
In analysis and design of structures subjected to blast loading, equivalent Single-Degree-of-Freedom (SDOF) method is commonly recommended in design guides. In this paper, improved analysis method based on SDOF models is proposed. Both flexural and direct shear behaviors of structures subjected to b...
| Main Authors: | , , |
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| Format: | Journal Article |
| Language: | English |
| Published: |
SAGE
2021
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| Subjects: | |
| Online Access: | http://purl.org/au-research/grants/arc/DP190103253 http://hdl.handle.net/20.500.11937/91729 |
| _version_ | 1848765580699500544 |
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| author | Cui, Liuliang Zhang, Xihong Hao, Hong |
| author_facet | Cui, Liuliang Zhang, Xihong Hao, Hong |
| author_sort | Cui, Liuliang |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | In analysis and design of structures subjected to blast loading, equivalent Single-Degree-of-Freedom (SDOF) method is commonly recommended in design guides. In this paper, improved analysis method based on SDOF models is proposed. Both flexural and direct shear behaviors of structures subjected to blast load are studied using equivalent SDOF systems. Methods of deriving flexural and direct shear resistance functions are introduced, of which strain hardening and softening effects are considered. To collocate with the improved SDOF models, the improved design charts accounting for strain hardening and softening are developed through systematical analysis of SDOF systems. To demonstrate the effectiveness of the proposed analysis method, a model validation is made through comparing the predictions with laboratory shock tube testing results on reinforced concrete (RC) columns. It is found that compared to the conventional approach with elastic and elastic-perfectly-plastic model, the elastic-plastic-hardening model provides more accurate predictions. Additional non-dimensional design charts considering various levels of elastic-plastic-hardening/softening resistance functions are developed to supplement those available in the design guides with elastic-perfectly-plastic resistance function only, which provide engineers with options to choose more appropriate resistance functions in design analysis. |
| first_indexed | 2025-11-14T11:37:31Z |
| format | Journal Article |
| id | curtin-20.500.11937-91729 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T11:37:31Z |
| publishDate | 2021 |
| publisher | SAGE |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-917292023-05-30T08:08:21Z Improved analysis method for structural members subjected to blast loads considering strain hardening and softening effects Cui, Liuliang Zhang, Xihong Hao, Hong Science & Technology Technology Construction & Building Technology Engineering, Civil Engineering blast loads design charts direct shear responses elastic-plastic-hardening softening flexural responses SDOF model PRESSURE-IMPULSE DIAGRAMS FLEXURAL FAILURE SHEAR FAILURES RC SLABS ELEMENTS BEAMS MODELS FIBER In analysis and design of structures subjected to blast loading, equivalent Single-Degree-of-Freedom (SDOF) method is commonly recommended in design guides. In this paper, improved analysis method based on SDOF models is proposed. Both flexural and direct shear behaviors of structures subjected to blast load are studied using equivalent SDOF systems. Methods of deriving flexural and direct shear resistance functions are introduced, of which strain hardening and softening effects are considered. To collocate with the improved SDOF models, the improved design charts accounting for strain hardening and softening are developed through systematical analysis of SDOF systems. To demonstrate the effectiveness of the proposed analysis method, a model validation is made through comparing the predictions with laboratory shock tube testing results on reinforced concrete (RC) columns. It is found that compared to the conventional approach with elastic and elastic-perfectly-plastic model, the elastic-plastic-hardening model provides more accurate predictions. Additional non-dimensional design charts considering various levels of elastic-plastic-hardening/softening resistance functions are developed to supplement those available in the design guides with elastic-perfectly-plastic resistance function only, which provide engineers with options to choose more appropriate resistance functions in design analysis. 2021 Journal Article http://hdl.handle.net/20.500.11937/91729 10.1177/13694332211007382 English http://purl.org/au-research/grants/arc/DP190103253 SAGE fulltext |
| spellingShingle | Science & Technology Technology Construction & Building Technology Engineering, Civil Engineering blast loads design charts direct shear responses elastic-plastic-hardening softening flexural responses SDOF model PRESSURE-IMPULSE DIAGRAMS FLEXURAL FAILURE SHEAR FAILURES RC SLABS ELEMENTS BEAMS MODELS FIBER Cui, Liuliang Zhang, Xihong Hao, Hong Improved analysis method for structural members subjected to blast loads considering strain hardening and softening effects |
| title | Improved analysis method for structural members subjected to blast loads considering strain hardening and softening effects |
| title_full | Improved analysis method for structural members subjected to blast loads considering strain hardening and softening effects |
| title_fullStr | Improved analysis method for structural members subjected to blast loads considering strain hardening and softening effects |
| title_full_unstemmed | Improved analysis method for structural members subjected to blast loads considering strain hardening and softening effects |
| title_short | Improved analysis method for structural members subjected to blast loads considering strain hardening and softening effects |
| title_sort | improved analysis method for structural members subjected to blast loads considering strain hardening and softening effects |
| topic | Science & Technology Technology Construction & Building Technology Engineering, Civil Engineering blast loads design charts direct shear responses elastic-plastic-hardening softening flexural responses SDOF model PRESSURE-IMPULSE DIAGRAMS FLEXURAL FAILURE SHEAR FAILURES RC SLABS ELEMENTS BEAMS MODELS FIBER |
| url | http://purl.org/au-research/grants/arc/DP190103253 http://hdl.handle.net/20.500.11937/91729 |