| 改进型大管桩分批张拉预应力损失的试验研究 |
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| 引用本文： | 吴捷安,胡若邻,陈学国.改进型大管桩分批张拉预应力损失的试验研究[J].水运工程,2013(9):164-168. |
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| 作者姓名： | 吴捷安 胡若邻 陈学国 |
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| 作者单位： | 宁波海港工程有限公司，浙江 宁波 315200;中交四航工程研究院有限公司，广东 广州 510288；广州港湾工程质量检测有限公司，广东 广州 510288;宁波海港工程有限公司，浙江 宁波 315200 |
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| 摘 要： | 为一次性完成后张法预应力混凝土大管桩多股钢束张拉，使各钢束应力达到设计控制应力且分布均匀、实现精
细化施工，对分批张拉过程的预应力损失量进行了理论分析，并通过某型号的改进型大管桩分批次张拉过程进行了试验测
试。研究结果表明分批次张拉效果良好，各预应力损失率与理论结果基本相符。
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| 关 键 词： | 后张法 预应力混凝土大管桩 分批张拉 预应力损失 |
Experimental study on batch prestress loss of modified large-diameter prestress concrete post-tensioned cylinder pile |
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| WU Jie-an,HU Ruo-lin and CHEN Xue-guo.Experimental study on batch prestress loss of modified large-diameter prestress concrete post-tensioned cylinder pile[J].Port & Waterway Engineering,2013(9):164-168. |
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| Authors: | WU Jie-an HU Ruo-lin and CHEN Xue-guo |
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| Institution: | Ningbo Habour Engineering Co., Ltd., Ningbo, 315200, China;CCCC Forth Harbor Engineering Institute Co., Ltd.,Guangzhou 510288, China; Guangzhou Harbor Engineering Quality Examination Co., Ltd.,Guangzhou 510288, China;Ningbo Habour Engineering Co., Ltd., Ningbo, 315200, China |
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| Abstract: | For tensioning several prestressing tendons of tubular piles uniformly at one time, we carry out
a theoretical analysis of and test on the prestress loss in the process of the batch prestressing. The result reveals
that the batch prestressing bears satisfactory effect and the real loss rate of the prestress accord basically with the
theoretical result. |
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| Keywords: | post-tensioned prestressed concrete large- diameter cylinder pile batch prestress prestress loss |
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