摘要
为了进一步揭示带缝空心R.C剪力墙的抗震机理,本文在8个带缝空心R.C剪力墙模型和1个带缝空心R.C剪力墙楼房结构模型抗震性能试验研究的基础上,对墙板模型和房屋模型的刚度退化规律进行研究,分析了人工竖缝、暗柱、剪跨比和竖向荷载对剪力墙模型刚度退化的影响,研究了房屋模型的刚度退化和阻尼比变化的特点,并对该新型剪力墙的保温性能进行了分析。研究表明:带缝空心R.C剪力墙在低周反复荷载作用下刚度退化缓慢;人工竖缝两侧设暗柱以及较小范围内竖向荷载的施加均有利于延缓墙体的刚度退化;剪跨比较高时该剪力墙在提高墙体的延性方面的优势更加明显;房屋模型的刚度整体上呈现较为平缓的退化趋势,后期结构刚度比较稳定;通过在墙体空心柱内填充保温材料,会使该新型剪力墙达到良好的节能效果。
In order to further reveal the seismic behavior of R. C hollow shear wall with seams,this paper studied stiffness degradation of wallboard and building models of this kind of shear wall. The study was on basis of seismic experiment of 8 wallboard models and 1building model of R. C hollow shear wall with seams. The main content of the study contained the following： how artificial seams、concealed columns、shear span ratio and vertical load produced an effect on stiffness degradation of the wallboard models; how stiffness and damping ratio of the building model were changing in the experiment; thermal insulation performance of this new kind of shear wall. The conclusions of the study are as follows： stiffness degradation of R. C hollow shear wall with seams is relatively slow under low cyclic loading; the concealed columns on both sides of artificial seams and smaller value of vertical load are gainful for deferring stiffness degradation of wallboard models; the ductility advantage of the new shear wall is even more obvious when shear span ratio is relatively large; stiffness degradation of the building model is relatively slow and the upper stiffness is relatively steady; the energy saving effect of this new kind of shear wall is much better by means of filling with insulation material in the hollow columns.
出处
《工程抗震与加固改造》
北大核心
2016年第5期21-26,共6页
Earthquake Resistant Engineering and Retrofitting
基金
内蒙古自治区自然科学基金项目(2016BS0504)
内蒙古工业大学科学研究项目(X201414)
关键词
带缝空心剪力墙
房屋模型
刚度退化
保温性能
hollow shear wall with seams
building model
stiffness degradation
thermal insulation performance
