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科技导报  2015 

预应力高强混凝土管桩-承台组合体受力性能

DOI: 10.3981/j.issn.1000-7857.2015.12.007, PP. 44-49

Keywords: PHC,管桩,低周往复荷载,承载力,延性

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Abstract:

对5个预制桩身与承台组合体试件进行低周反复试验,分析构件的破坏形态、承载力及延性、锚固钢筋的受力,研究预制桩身与承台锚固钢筋的不同锚固形式对试件受力性能的影响。结果表明通过连接板焊接锚固钢筋的试件,倾角锚固钢筋能延缓试件裂缝的发展,提高试件的承载能力;在桩身内安放钢筋笼并深入承台的锚固钢筋可明显改善管桩-承台组合体试件的整体性,提高组合体试件的承载能力、延性,改善组合体试件的变形能力,且斜角锚固钢筋试件的承载能力优于直角试件。

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