原文传递
Progressive Collapse Resistance of Precast Concrete Frames with Discontinuous Reinforcement in the Joint
| 题名： | Progressive Collapse Resistance of Precast Concrete Frames with Discontinuous Reinforcement in the Joint |
| 其他题名： | BSI(British Standards Institution).(2004)."Eurocode 2:Design of concrete structures—Part 1-1:General rules and rules for buildings."BS EN 1992-1-1,London. |
| 正文语种： | 英文 |
| 作者： | Shao-Bo Kang |
| 关键词： | Column removal scenarios;Precast concrete frames;Joint detailing;Horizontal restraints;Compressive arch action;Catenary action;Concrete and masonry structures |
| 摘要： | Boundary conditions of precast concrete frames play a crucial role in their progressive collapse resistance under middle column removal scenarios. Interior and exterior frames behave differently as a result of different horizontal restraints on side columns. This paper presents an experimental study on four precast concrete frames with either 90° bend or lap-splice of the bottom reinforcement in the beam-column joint. The resistance of interior and exterior frames were determined quantitatively. Reinforcement detailing in the beamcolumn joint dominated structural resistance and deformation capacity of interior frames. Side columns of interior frames remained intact under compressive arch action (CAA) and catenary action, in spite of significant horizontal deflections and severe cracking because of initial horizontal compression at the CAA stage and subsequent tension at the catenary action stage. However, one exterior frame exhibited flexural failure of the side column when subject to catenary action, evidenced by concrete crushing in the compression zone. In side beam-column joints, diagonal shear cracks were observed at the CAA stage, and shear links were mobilized to sustain the shear force. Finally, relevant conclusions on the progressive collapse design of precast concrete frames are drawn from the experimental findings. |
| 出版年： | 2017 |
| 论文唯一标识： | P-26Y2017V143N09014 |
| 英文栏目名称： | TECHNICAL PAPERS |
| doi： | 10.1061/(ASCE)ST.1943-541X.0001828 |
| 期刊名称： | Journal of Structural Engineering |
| 拼音刊名(出版物代码)： | P-26 |
| 卷： | 143 |
| 期： | 09 |
| 页码： | 148-160 |
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