T形短肢剪力墙弹塑性受力性能优化分析

Simulative analysis on the static elasto-plastic property of shot-leg shear wall

利用大型通用有限元软件ANSYS,对T形短肢剪力墙的弹塑性性能进行了优化分析。分别对常规、带暗柱和带暗支撑的T形短肢剪力墙,进行了承载能力和变形能力的分析。结果表明:常规短肢剪力墙截面高厚比在6.5左右时,受力性能较好;带暗柱及暗支撑肢力墙的受力性能明显优于常规剪力墙,但暗柱及暗支撑的配筋率在超过一定值时,增加配筋率所产生的效果并不明显。本文的研究,对短肢剪力墙的设计具有一定的参考价值。

Optimization analysis of T-shaped shot - leg shear wall is carried out using the general FEA program ANSYS. The load- carrying and deformation capacity are discussed for conventional T-shaped shear wall and T-shaped shear wall with concealed column or bracing. The result reveals that when the sectional depth-thickness ratio is 6. 5, the load-carrying and deformation capacity are relatively high for conventional T-shaped shear wall. The plastic-elastic property of shear wall with concealed column or bracing is better than the conventional ones, but if the reinforcement ratio of the column or bracing exceed a limit, the reinforcement increasing will produce slight effect.