住宅建筑剪力墙结构优化设计及抗震性能研究

Study on Optimal Design and Seismic Performance of Residential Shear Wall Structure

文中通过有限元软件SATWE剪力不同试件的简易仿真模型,对墙长及墙厚对剪力墙抗震性能的影响进行分析。结果表明,随着剪力墙长度的降低,剪力墙结构的层间位移-楼层增长速率不断增加,层间位移不断增加;剪力墙结构的层间位移角-楼层增长速率和下降速率均不断增加,最大层间位移角不断增加。随着剪力墙厚度的降低,剪力墙结构的自振周期、层间位移以及层间位移角的变化不显著。剪力墙结构的自振周期随楼层数的增加,呈现先快速降低,后趋于稳定,最终接近1.3 s的变化规律。墙体的层间位移表现为不断增加的变化规律,斜率为0.89 mm/层。

The effects of wall length and wall thickness on the seismic performance of shear walls are analyzed by simple simulation models of different shear specimens with finite element software SATWE.The results show that with the decrease of the length of shear wall,the interstory displacement-floor growth rate and interstory displacement increase continuously.The inter-story displacement Angle of shear wall structure increases continuously,and the maximum inter-story displacement Angle increases continuously.With the decrease of shear wall thickness,the natural vibration period,interstory displacement and interstory displacement Angle of shear wall structure do not change significantly.With the increase of the number of floors,the natural vibration period of the shear wall structure decreases rapidly at first,then tends to be stable and finally approaches 1.3s.The interlayer displacement of the wall shows an increasing change rule with a slope of 0.89 mm/layer.