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| Seismic performance test and finite element analysis of frame truss composite wall |
| Received:July 12, 2017 Revised:September 09, 2017 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx20170712001 |
| KeyWord:frame truss composite wall truss nonlinear analysis seismic performance |
| Author | Institution |
| 雍馨 |
西安理工大学 土木建筑工程学院, 西安 |
| 杜保平 |
陕西省现代建筑设计研究院, 西安 |
| 李哲 |
西安理工大学 土木建筑工程学院, 西安 |
| 李晓蕾 |
西安理工大学 土木建筑工程学院, 西安 |
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| Abstract: |
| A new type of frame-truss composite walls composed of reinforced concrete frames and internal truss members is proposed in this paper.In order to study the seismic performance,3 units of frame truss composite walls according to the reduced scale of 1:2 were preliminarily designed and manufactured,a pseudo-static test was carried out,and a nonlinear finite element analysis model was established by using ABAQUS software.The influence of bearing capacity and ductility by the axial compression ratio,concrete strength,stirrup ratio and longitudinal reinforcement ratio was analyzed.The results show that the truss was deformed and destroyed prior to the outer wall,and finally ultimate destruction occured at the location of the triangle formed the bottom of the wall and the truss when the bending moment reaches the limit capacity,the sequence of damage is clear.The purpose of multistage energy dissipation can be achieved.The ductility coefficient of three specimens were less than 2.5,the difference of ductility coefficient between three specimens shows that the shape of the truss cross section is an important factor affecting the bearing capacity of the wall.With the increase of axial compression ratio,concrete strength and longitudinal reinforcement ratio,the bearing capacity of specimens increases to different degrees,the ductility coefficient of specimens decreases with the increase of axial compression ratio and longitudinal reinforcement ratio,but increases with the increase of concrete strength.In addition,the effect of reinforcement ratio on load-displacement curve,bearing capacity and ductility coefficient of concrete is very minor;each factor has different influence on the seismic performance. |
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