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混凝土独立基础底板抗拔承载性能试验

本站小编 Free考研考试/2022-02-13
DOI: 10.11908/j.issn.0253-374x.2018.10.008

作者:

作者单位: 同济大学土木工程学院建筑工程系,同济大学土木工程学院建筑工程系,国网四川省电力公司经济技术研究院,国网四川省电力公司经济技术研究院


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中图分类号: TU392.1


基金项目: 国家电网科技项目(项目编号：52199915002M)




Experimental Research on Uplift Capacity of Concrete Independent Foundation Slab
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摘要:对16个不同宽高比、不同斜边坡度的混凝土独立基础底板进行了上拔试验，研究了此类基础底板的破坏模式与抗拔承载性能.基于试验结果，对比分析了斜边坡度与宽高比因素对底板抗拔承载力的影响.试验结果表明，在宽高比、底板尺寸、截面配筋均相同的情况下，抗拔承载力随斜边坡度的增大而明显降低；在斜边坡度、基础底板尺寸相同的情况下，随着宽高比的增大，抗拔承载力也逐渐降低.研究结果可为混凝土独立基础底板抗拔承载设计方法的提出提供试验基础.



Abstract:A total of 16 concrete independent foundation slabs with different widthtoheight ratios and hypotenuse slopes were tested under uplift load, and the failure modes and uplift bearing capacities of this type of foundation slab were studied. Based on the test results, the effects of widthtoheight ratio and hypotenuse slope on uplift bearing capacity of foundation slab were also analyzed and compared. The experimental results showed that, the uplift bearing capacity decreases obviously with the increase of hypotenuse slope when the widthtoheight ratio, the size of slab and steel reinforcement are the same. In addition, the results also showed that when the hypotenuse slope and the size of slab are same, the uplift bearing capacity of foundation slab is gradually reduced with the increase of widthtoheight ratio. The results of this study can provide experimental basis for the concrete independent foundation slab in proposing the design method of uplift capacity.





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