| 预应力锚索锚固长度对锚固效果的影响试验研究 |
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| 引用本文： | 宋锦秋,柳建国,纪洪广. 预应力锚索锚固长度对锚固效果的影响试验研究[J]. 工业建筑, 2013, 43(6): 95-99 |
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| 作者姓名： | 宋锦秋 柳建国 纪洪广 |
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| 作者单位： | 1. 北京科技大学,北京,100083
2. 中冶建筑研究总院有限公司,北京,100088 |
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| 摘 要： | 实际工程中,影响锚索极限承载力的因素众多,由于设计计算方法不成熟、施工工艺不够先进等原因,导致理论锚固力与工程实测锚固力存在差异。通过对实际工程中拉力型锚索极限拉拔试验得到的拉力-位移关系的分析,得出在试验土体条件下的锚固长度与有效因子的关系曲线。提出了工程实际中影响锚固力的因素。
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| 关 键 词： | 破坏性拉拔试验 锚固长度 黏结应力 有效因子 |
FIELD INVESTIGATION ON THE EFFECT OF FIXED LENGTH OF PRE-STRESSED CABLES |
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| Abstract: | In actual projects,there are many factors which may influence the ultimate bearing capacity of ground anchors.Some problems like defects in calculation method and constuction process would result in discrepancy between theorical an chorage force and actual force.Some investigation tests of pre-stressed cables were done to obtain the relationships between the axial force and the axial displacement of the prestressed cables;and to acquire how the fixed length affects the bond stress.It was also proposed some problems that easily happened in actual projects |
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| Keywords: | destructive tension test fixed length bond stress efficient factors |
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