RESEARCH ON VISCOUS DAMPERS APPLIED TO HIGH-RISE SHORT-LEG SHEAR WALLS STRUCTURES
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摘要: 在研究黏滞阻尼器减震短肢剪力墙结构抗震设计方法的基础上,对黏滞阻尼器的安装位置和传统计算方法进行总结和改进,提出按照阻尼力与楼层剪力呈正比的方式分配阻尼系数的方法,并采用渐进法的思想实现对结构所需附加阻尼比更为精确的计算。结合工程设计实例,通过方案对比,对普通剪力墙结构、短肢剪力墙结构、短肢剪力墙+黏滞阻尼器结构建立有限元模型进行时程分析,证实黏滞阻尼器在短肢剪力墙结构中能够发挥较好的耗能作用,使结构构件基本处于弹性变形的安全状态,弥补了短肢剪力墙结构自身存在的缺点,使建筑的经济性得到保障。并通过振动台模拟破坏试验,进一步验证黏滞阻尼器在高层短肢剪力墙结构中的良好减震效果。Abstract: Based on the study of seismic design of viscous dampers short-leg shear walls structure,it is summarized and improved the installment location and traditional calculation methods.It is put forward the method of distributing damping coefficient according to the direct ratio of damping force and floor shear,and also adopted the idea of accumulation to realize more accurate calculation of additional damping ratio needed in the structure.Combining real cases,and through comparison of designs,the paper has built finite element models and performed time-history analysis for common shear wall structure,short-leg shear wall structure,short-leg shear walls + viscous damper structure.It is proved that viscous dampers performs better in energy consumption,which makes the structure components maintain the safe state of elastic deformation,makes up shortcomings existing in the short-leg shear wall structure,and secures the building is more economical.Additionally,through simulated destruction test on the vibration table,it is further verified the outstanding shock absorption effect of viscous dampers in short-leg shear wall structures.
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Key words:
- short-leg shear walls /
- viscous dampers /
- energy dissipation design /
- effect analysis
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