全装配式钢筋混凝土框架-剪力墙结构抗震性能试验研究

发布时间：2018-03-08 17:43

本文选题：全装配式RC框架-剪力墙结构　切入点：低周反复加载试验　出处：《建筑结构学报》2017年06期 　论文类型：期刊论文

【摘要】：为研究采用预制剪力墙、预制框架的全装配式RC框架-剪力墙结构的抗震性能,对2榀1/2比例两层两跨RC框架-剪力墙结构子结构模型试件(其中1榀为全装配试件PCFW2,1榀为全现浇对比试件RCFW)进行了低周反复荷载试验,分析了结构的破坏机制、破坏形态、塑性铰开展、滞回性能、位移延性、刚度退化和耗能能力等。结果表明:全装配式试件PCFW2与全现浇对比试件RCFW的开裂荷载相当,破坏过程和最终破坏形态基本相同;灌浆套筒、约束浆锚可有效传递钢筋应力;全装配式试件PCFW2整体性良好,其屈服荷载、峰值荷载、极限荷载均略大于全现浇对比试件RCFW的相应值,但相差不超过13.0%,位移延性系数较全现浇试件RCFW的略低。在大部分受力阶段,试件PCFW2耗能优于试件RCFW。建议全装配式框架-剪力墙结构中剪力墙的边柱(或边缘)纵筋,采用灌浆套筒连接,其余部分采用约束浆锚搭接连接,而框架湿节点处的后浇混凝土采用微膨胀混凝土。
[Abstract]:In order to study the seismic behavior of fully assembled RC frame-shear wall structures with precast shear walls and prefabricated frames, The low cycle repeated loading tests were carried out on two substructure model specimens of 1/2 scale two-story RC frame-shear wall structures (one of which was a full-assembly specimen PCFW2or, one of which was a full-cast-in-situ contrast specimen). The failure mechanism and failure mode of the structure were analyzed. Plastic hinge development, hysteretic performance, displacement ductility, stiffness degradation and energy dissipation capacity. The results show that the cracking load of fully assembled specimen PCFW2 is similar to that of full cast-in-place contrast specimen RCFW, and the failure process and ultimate failure form are basically the same. The restrained grouting anchor can effectively transfer the stress of steel bar, and the PCFW2 of fully assembled specimen has good integrity, and its yield load, peak load and ultimate load are slightly larger than the corresponding value of RCFW of the whole cast-in-place contrast specimen. But the difference is not more than 13.0, the displacement ductility coefficient is slightly lower than that of the full-cast specimen RCFW. In most stress stages, the PCFW2 energy consumption of the specimen is better than that of the specimen RCFW. It is suggested that the side column (or edge) longitudinal reinforcement of the shear wall in the fully assembled frame-shear wall structure is better than that of the full-assembly frame-shear wall structure. The grouting sleeve is used to connect, the rest is connected by restrained grouting anchor, while the post-pouring concrete at the wet joint of the frame is made of micro-expansive concrete.
【作者单位】：东南大学混凝土及预应力混凝土结构教育部重点实验室;中国十七冶集团有限公司;
【基金】：国家自然科学基金项目(51278118) 中国中冶“三五”重大科技专项(中冶科[2013]1号)
【分类号】：TU352.11;TU398.2

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