| 肋柱式锚杆支挡结构的徐变次内力分析 |
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| 引用本文： | 王后裕,刘志杰,言志信.肋柱式锚杆支挡结构的徐变次内力分析[J].岩土工程技术,2008,22(3):127-130. |
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| 作者姓名： | 王后裕 刘志杰 言志信 |
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| 作者单位： | 1. 空军工程设计研究局,北京,100068
2. 中南大学,湖南长沙,410075 |
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| 摘 要： | 采用老化徐变理论和等效弹性模量法，对肋柱式锚杆支挡结构的徐变影响提出了具体计算方法，并通过实例计算了支挡结构的徐变次内力。计算结果表明，在逆作法条件下，随着开挖深度的加大，岩土侧向压力也增大，使后期施工的混凝土构件产生的徐变次内力也随之增大；考虑徐变后使结构设计更加安全可靠，尤其坡脚处后期浇筑的混凝土构件，更要关注徐变的影响。
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| 关 键 词： | 肋柱式锚杆支挡结构 次内力 混凝土徐变 等效弹性模量法 逆作法施工 岩石边坡 |
Secondary Inner Force Analysis of Column-Anchor Retaining Structure with Concrete Creep |
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| Wang Houyu,Liu Zhijie,Yan Zhixin.Secondary Inner Force Analysis of Column-Anchor Retaining Structure with Concrete Creep[J].Geotechnical Engineering Technique,2008,22(3):127-130. |
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| Authors: | Wang Houyu Liu Zhijie Yan Zhixin |
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| Institution: | Wang Houyu,Liu Zhijie,Yan Zhixin (1. Air Force Engineering Design ＆ Research Bureau, Beijing 100068;2. Central South University, Changsha Hunan 410075 China) |
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| Abstract: | A practical method of secondary inner force analysis is presented for column-anchor retaining structure considering concrete creep based on concrete aging creep theory and equivalent elastic modulus. The results of secondary inner force of a detail retaining structure are also presented and discussed. It is demonstrated that the secondary inner force increases with the increasing of earth pressure or with the increasing of excavation depth under downward construction. The results also show that it is necessary to consider concrete creep for retaining structure near wall toe because the secondary inner force of this section is larger than others. |
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| Keywords: | column-anchor retaining structure secondary inner force concrete creep equivalent elastic modulus method~ downward construction method~ rock slope |
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