| 某生产车间现浇混凝土楼板板角斜裂缝分析 |
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| 引用本文： | 张燕莉,黄长城.某生产车间现浇混凝土楼板板角斜裂缝分析[J].佳木斯大学学报,2014(5):663-666. |
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| 作者姓名： | 张燕莉 黄长城 |
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| 作者单位： | 同济大学结构工程与防灾研究所,上海,200092 |
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| 摘 要： | 某现浇钢筋混凝土框架剪力墙结构生产车间在使用中楼板有不同程度的开裂受损,尤其是房屋西南角(纵横外墙交接处)不同楼层同一部位均有形态、特征相似的板角对穿斜裂缝.为了研究这些对穿斜裂缝的产生机理,采用ANSYS有限元软件,建立三维实体模型,同时考虑温度变化及混凝土收缩变形,先进行热分析,再进行结构分析,最后得到楼板板角处最大主拉应力的分布,验证了温差和混凝土的收缩是楼板45°斜裂缝产生的主要原因.
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| 关 键 词： | 现浇板 45 °斜裂缝 温度变化 混凝土收缩 有限元分析 |
Analysis of Oblique Cracks on the Cast-in-place Slabs |
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| ZHANG Yan-li,HUANG Chang-cheng.Analysis of Oblique Cracks on the Cast-in-place Slabs[J].Journal of Jiamusi University(Natural Science Edition),2014(5):663-666. |
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| Authors: | ZHANG Yan-li HUANG Chang-cheng |
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| Institution: | (Research Institute of Structural Engineering and Disaster Reduction, Tongji University, Shanghai 200092, China) |
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| Abstract: | The slabs of a cast -in-place reinforced concrete frame shear wall appeared cracks to a varia-ble extent during its usage .Particularly, there are oblique through cracks , which appear in the same location and are similar in shape and characteristic , at the southwest corner （ at the junction of vertical and horizontal ex-terior walls） of each floor.In order to analyze the mechanism of these through oblique crack , finite element soft-ware ANSYS was adopted to build a three -dimensional solid model , taking into account the temperature change and concrete shrinkage deformation .First, thermal analysis was conducted , followed by the structural analysis . And the distribution of maximum tensile stress was obtained , confirming that the temperature difference between interior and exterior walls and the shrinkage of concrete are the main causes of 45 °oblique through cracks . |
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| Keywords: | cast-in-place slabs 45 °oblique crack temperature variation shrinkage of concrete finite element analysis |
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