半刚接钢框架内填高延性纤维混凝土剪力墙结构抗震性能试验研究

发布时间：2018-03-22 01:19

本文选题：半刚接钢框架　切入点：高延性纤维混凝土　出处：《土木工程学报》2015年03期 　论文类型：期刊论文

【摘要】：采用高延性纤维混凝土(DFRC)改善半刚性连接钢框架内填RC剪力墙结构(PSRCW)的抗震性能和变形能力,设计1榀半刚性连接钢框架内填DFRC剪力墙试件(SDFRCW),并进行拟静力试验,研究其破坏机理、滞回性能、刚度退化、延性及耗能能力,并与已有文献的试验结果进行比较可得:1DFRC良好的拉伸性能和应变硬化效应,可以有效控制内填墙体的斜裂缝稳定发展,实现延性剪切破坏模式;2SDFRCW试件的开裂位移、屈服位移和极限位移明显高于PSRCW试件,可见采用DFRC能显著提高SDFRCW结构的层间变形能力;3SDFRCW试件破坏时,内填DFRC剪力墙已出现较宽的主斜裂缝,但墙体始终保持良好的整体性,试件承载力和刚度退化缓慢,说明采用DFRC可显著提高墙体的耐损伤能力,减少结构的震后修复费用;4SDFRCW结构具有良好的层间变形能力,能有效控制结构在小震和中震作用下的变形,满足大震作用下的变形能力和耗能要求。
[Abstract]:Using high ductile fiber reinforced concrete (DFRC) to improve the seismic behavior and deformation capacity of RC shear wall structure with semi-rigid connection steel frame, a DFRC shear wall specimen with semi-rigid connection steel frame is designed, and the quasi-static test is carried out. The failure mechanism, hysteretic property, stiffness degradation, ductility and energy dissipation ability are studied, and the good tensile properties and strain hardening effect of 1 / 1 DFRC are obtained by comparing with the experimental results in previous literatures. It can effectively control the stable development of the inclined crack of the inner filled wall, and realize the crack displacement of the specimens under the ductile shear failure mode of 2SDF RCW. The yield displacement and the limit displacement are obviously higher than those of the PSRCW specimen. It can be seen that the interstory deformation capacity of SDFRCW structure can be improved significantly by using DFRC. When the specimen is destroyed, the wall with DFRC shear wall has a wide main slanting crack, but the wall always maintains a good integrity, and the bearing capacity and stiffness of the specimen degrade slowly. The results show that DFRC can significantly improve the damage resistance of the wall, reduce the repair cost of the structure after the earthquake and reduce the cost of repairing the structure. The structure has good interlaminar deformation ability, and it can effectively control the deformation of the structure under the action of small earthquake and moderate earthquake. To meet the deformation capacity and energy consumption requirements under the action of large earthquakes.
【作者单位】：西安建筑科技大学;徐州中煤钢结构建设有限公司;
【基金】：国家自然科学基金(50908187,51278402) 陕西省自然科学基金(2013JM7013) 西安建筑科技大学创新团队计划项目
【分类号】：TU352.11

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