| 抗拔钢筋对提高混凝土承台-钢柱脚锚固承载力的研究 |
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| 引用本文： | 张晓新,曹万林,薛素铎.抗拔钢筋对提高混凝土承台-钢柱脚锚固承载力的研究[J].世界地震工程,2006,22(3):131-135. |
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| 作者姓名： | 张晓新 曹万林 薛素铎 |
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| 作者单位： | 北京工业大学,北京,100022 |
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| 摘 要： | 在试验研究基础上,采用ANSYS有限元分析程序,对不同抗拔钢筋配筋率的混凝土承台-钢柱脚在单向加载下的性能进行了弹塑性计算分析。结果表明,随着抗拔钢筋配筋率提高,其抗拔承载力、后期刚度、耗能能力均比未配抗拔钢筋的混凝土承台-钢柱脚逐步提高,但其提高的比例逐渐趋慢。用承载力桁架模型对各混凝土承台-钢柱脚承载力进行了计算,结果与有限元计算结果符合较好。
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| 关 键 词： | 钢柱脚 混凝土承台 抗拔钢筋 锚固性能 |
| 文章编号： | 1007-6069(2006)03-0131-05 |
| 收稿时间： | 2006-04-23 |
| 修稿时间： | 2006-06-23 |
Study on ultimate up-lift bearing capacity of steel column base embedded in concrete pile cap with anti-punching shear bar |
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| ZHANG Xiao-xin,CAO Wan-lin,XUE Su-duo.Study on ultimate up-lift bearing capacity of steel column base embedded in concrete pile cap with anti-punching shear bar[J].World Information On Earthquake Engineering,2006,22(3):131-135. |
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| Authors: | ZHANG Xiao-xin CAO Wan-lin XUE Su-duo |
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| Institution: | Beijing University of Technology, Beijing 100022, China |
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| Abstract: | Nonlinear finite element analysis of pile caps of steel column base under unilateral load is carried out by ANSYS program in order to understand the enhance effect to ultimate up-lift bearing capacity of steel column base embedded in concrete pile cap with anti-punching shear bar.The results are revealed that the ultimate loads,the energy dissipation capacity and the stiffness in the final stage of the specimen with anti-punching shear bar is higher than that of the specimen without anti-punching shear bar.With the increasing of the reinforcement ratio of anti-punching shear bar,the ultimate up-lift bearing capacity is increased.But the increasing speed of the ultimate up-lift bearing capacity is slower than that of the reinforcement ratio.ANSYS program's results agree well with the calculated results with the formula of truss mechanic model. |
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| Keywords: | steel column base pile cap anti-punching shear bar anchorage performance |
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