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| Beam-column element based on flexibility method and constitutive law of yield surface of section axial force and bending moment |
| Received:April 08, 2013 Revised:July 06, 2013 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx201405011 |
| KeyWord:yield surface section constitutive law flexibility method fiber model elastoplastic analysis |
| Author | Institution |
| 陈永盛 |
哈尔滨工业大学 土木工程学院, 哈尔滨 |
| 吴斌 |
哈尔滨工业大学 土木工程学院, 哈尔滨 |
| 潘天林 |
哈尔滨工业大学 土木工程学院, 哈尔滨 |
| 许国山 |
哈尔滨工业大学 土木工程学院, 哈尔滨 |
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| Abstract: |
| Beam-column element based on section level can consider the calculation accuracy and efficiency at the same time.However,the existing section constitutive model didn't accurately reflect axial-flexure interaction (AFI),and the flexibility method was not made full use of in the Beam-column element.Herein,a beam-column element based on flexibility method and constitutive model derived from yield surface(YS) of section axial force and bending moment (AFBM) was proposed.Firstly,the YS of section AFBM is formed by section assemblage concept.Then,element and section state were determinated based on flexibility method and plastic theory respectively.Finally,dynamic elastoplastic analysis was implemented for a planar steel frame.The results show that the constitutive model derived from YS of section AFBM can account for AFI accurately,and that the element formulated by flexibility method can well represent a member with only one element. |
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