|
| Mechanical properties of reinforced concrete rocking columns related to damage resistance |
| Received:April 30, 2021 Revised:September 15, 2021 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx20210430001 |
| KeyWord:resilience rocking column elastic half-space stress distribution mechanical model |
| Author | Institution |
| 朱春阳 |
沈阳建筑大学, 沈阳 |
| 崔艳青 |
沈阳建筑大学, 沈阳 |
| 孙丽 |
沈阳建筑大学, 沈阳 |
| 金峤 |
沈阳建筑大学, 沈阳 |
| 张春巍 |
青岛理工大学, 青岛 |
|
| Hits: 523 |
| Download times: 284 |
| Abstract: |
| The ultimate goal of seismic resilience is to maintain or quickly restore the function of a building after an earthquake.The tilt mechanism at the member level is an effective way to realize the restoration of the main structure function;however, the damage resistance of the members should be the premise.Considering a reinforced concrete (RC) rocking column as the object and by comparison with the classical Flamant theory of local loading in the elastic half-space, the elastic mechanical solution of the axial stress distribution of the rocking column was derived in this study.Furthermore, assuming that the lateral displacement of the rocking column is determined by the contact surface rotation angle of the column end and bending and shear deformation of the column body, the load-lateral displacement mechanical model of the RC rocking column was established and compared with finite element simulation results to verify its rationality.The analysis of axial compression ratio and column end strength was conducted, and the results showed that under the premise of column damage resistance, simply increasing the axial compression ratio increases the bearing capacity of the column but has an insignificant effect in improving the lateral displacement capacity.The bearing capacity and lateral displacement capacity of the column are significantly improved as the strength of the column end material increases.Therefore, it is feasible to improve the working performance of RC rocking column using the method of local reinforcement of the column end. |
|
|
|