PHC桩在输电线路中的应用

来源 :中国建筑学会地基基础分会2014年学术会议 | 被引量 : 0次 | 上传用户:rzptxjgl
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相比于灌注桩基础,PHC桩具有桩身质量有保证、施工工期短、无泥浆排放污染等优点,目前已被大量应用于工业与民用建筑、铁路、公路等工程中.而在输电线路工程使用的PHC桩不仅需要承受下压力,还需要承受上拔力和水平力,因此具有特殊的要求.本文结合输电线路特点,从管桩设计、桩身抗拉强度计算等方面对应用于输电线路的PHC桩进行研究,提出了PHC桩在输电线路中应用的几个关键因素,并从适用地质条件、环境影响、经济性及停锤控制标准等方面的注意事项进行了分析.指出应注意提升所采用PHC桩的抗拔性能,建议按一级裂缝控制等级构件的要求进行桩身结构抗拉强度设计计算。
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