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| Analytical model for torsional strength of prestressed concrete box-girder with corrugated steel webs |
| Received:October 14, 2011 Revised:February 26, 2012 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx201301023 |
| KeyWord:corrugated steel Webs torsional strength pure torsion fixed-angle softened truss model torque-twist curve |
| Author | Institution |
| 丁勇 |
解放军理工大学 野战工程学院,南京 |
| 江克斌 |
解放军理工大学 野战工程学院,南京 |
| 周寅智 |
解放军理工大学 野战工程学院,南京 |
| 杨建奎 |
解放军理工大学 野战工程学院,南京 |
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| Abstract: |
| An analytical model for torsional strength of prestressed concrete box-girder with corrugated steel webs under pure torsion was deduced based on torsion theory and Fixed-Angle Softened Truss Model.Either the shear flow remains constant or the shear strain stays equal between the web and flange depends on the state of the corrugated steel web is in unyielding or yielding when the hybrid box-girder is in ultimate state.The effect of locations of prestressed tendons to torsional strength of the hybrid box-girder was also taken into consideration.The analytical model proposed in this paper was validated by four specimens subjected to cyclic pure torque.The results show that not only the torsional strength but also the torque-twist curve can be obtained through the analytical model developed in this paper. |