T形短肢剪力墙弹塑性受力性能优化分析
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摘要
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.
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.
引文
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[2]曹万林,胡国振,等.钢筋混凝土带暗柱异形柱抗震性能试验及分析[J].建筑结构学报,2002,23(2):16-20.
[3]曹万林,董宏英,等.不同暗支撑型式的带暗支撑双肢剪力墙抗震性能试验研究[J].土木工程学报,2005,32(8):18-25.
[4]曹万林,杨兴民,等.钢筋混凝土带暗支撑双肢剪力墙抗震性能试验研究[J].世界地震工程,2004,20(4):30-35.
[4]张晋,吕志涛.短肢剪力墙—筒体结构模型振动台试验[J].东南大学学报,2001,31(6):4-8.
[5]宋建学,彭少民,刘立新.短肢剪力墙低周反复试验研究[J].华中科技大学学报(城市科学版),2002,19(1):91-94.
[6]张守军,李青宁,等.短肢剪力墙结构弹塑性静力性能仿真分析[J].西安建筑科技大学学报(自然科学版),2006,38(2):199-203.
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