|
| Finite element analysis on non-uniform settlement of foundation on RC frame structures |
| Received:June 27, 2009 Revised:December 06, 2009 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx201102020 |
| KeyWord:non-uniform settlement finite element sub-model additional internal force |
| Author | Institution |
| 贾强 |
山东建筑大学 土木工程学院;山东省建筑结构鉴定加固与改造重点实验室,济南 |
| 张鑫 |
山东建筑大学 土木工程学院;山东省建筑结构鉴定加固与改造重点实验室,济南 |
|
| Hits: 2132 |
| Download times: 2161 |
| Abstract: |
| The law of additional internal force of superstructure under non-uniform settlement of median pillar socle of a three-floor frame structure was analyzed using ANSYS finite element program. The three-dimensional integral fimite element model of frame structure was established with SOLID65 element, and analysis results can be used by sub-model when applied incision boundary freedom restriction. Sub-model of three-span frame beams at was established, which was fine meshed. Stress analysis results of longitudinal bars showed that the stress of top bars of frame beams at side pillar support and bottom bars at central pillar support augmented obviously with increasing settlement deformation of central pillar socle, and the stress of top bars at side pillar support increased more quickly. When settlement deformation of central pillar socle reached 0.03 meter, the rotation angle of the beams was about 1/250, and the stress of top bars of side pillar exceeded yield strength, then the members failed. Cracks of frame beams appeared initially at the top of side pillar support and bottom of central pillar support, and the cracks developed and augmented with increasing settlement deformation of central pillar socle, and cracks at the bottom of midspan of median span beams emerged. |
|
|
|