On the use of entangled wire materials in pre-tensioned rocking columns
On the use of entangled wire materials in pre-tensioned rocking columns
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DOI：
10.1088/1742-6596/1264/1/012007
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发表时间：
2019-07
期刊：
影响因子：
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通讯作者：
E. Ahmadi;M. Kashani
中科院分区：
文献类型：
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作者：
E. Ahmadi;M. Kashani
本研究探讨了缠绕钢丝材料作为先张法节段桥柱节段间中间层的潜在应用。在具有不同中间层配置的小规模柱上进行了一系列自由衰减振动试验。节段使用木块，整个系统使用预拉紧的钢筋紧固在一起。测定并比较了柱子的阻尼力和频率。结果表明，在摇摆过程中，缠绕的导线材料显著增加了整个系统的总阻尼。这一结果对缠绕丝材料在大型先张法节段桥柱试验中的应用具有很大的参考价值。然而，层的剪切和轴向刚度需要进一步提高，以减少其较大的剪切和轴向变形。
This research explores potential application of entangled wire materials as intermediate layers between segments of pre-tensioned segmental bridge columns. An ensemble of free-decay vibration tests was conducted on small-scale columns with various configurations of intermediate layers. Wooden blocks were used for segments and the entire system was tightened together using a pre-tensioned steel tendon. Damping and frequency of the columns were determined and compared. It is demonstrated that entangled wire materials substantially increase total damping of the entire system in rocking. This result is very encouraging for future application of entangled wire materials in testing large-scale pre-tensioned segmental bridge columns. However, shear and axial stiffness of the layers require further improvement to reduce their large shear and axial deformations.