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考虑边缘约束构件影响的高强混凝土剪力墙弯矩-曲率骨架曲线参数研究
Moment-curvature relationship analysis of high-strength concrete shear wall with partially confined end-zones
【摘要】 为了提高高强混凝土剪力墙的侧向变形能力,通常在剪力墙截面两端设置约束边缘构件。根据15个设置约束边缘构件高强混凝土剪力墙弯曲(弯曲剪切)破坏的试验结果,以开裂点、屈服点、峰值点和极限点将这种剪力墙截面的弯矩-曲率骨架曲线简化为4线型;基于平截面假定,分别推导了开裂、屈服、峰值以及极限点的弯矩和曲率表达式,同时考虑了边缘约束构件对峰值、极限点的弯矩-曲率的影响。分析结果表明,弯矩-曲率的计算值均与试验值吻合较好。
【Abstract】 In order to improve the lateral deformation capacity of the high strength concrete shear wall,partially confined end-zones are usually set in the both ends of the shear wall cross-section.According to the experimental results of 15 high strength concrete shear walls flexural(flexural-shear) failure,the moment-curvature skeleton curve of the shear wall cross-section is simplified as four lines by cracking point,yield point,peak point and ultimate point.Based on the plane-section assumption,the expressions of bending moment and curvature for the cracking,yielding,the peak and the ultimate state are derived.The effects of partially confined end-zones on peak point,the ultimate moment and curvature are also taken into account.The analysis results show that,the calculated values are in good consistent with the experimental data.
【Key words】 high strength concrete; shear wall; partially confined end-zones; moment-curvature relationship; skeleton curve;
- 【文献出处】 建筑结构学报 ,Journal of Building Structures , 编辑部邮箱 ,2009年S2期
- 【分类号】TU398.2
- 【被引频次】10
- 【下载频次】388