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首页> 外文期刊>Advanced Science Letters >Experimental Investigation on the Anchorage Performance of Clamping Anchors for Carbon Fiber Reinforced Polymer Rods
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Experimental Investigation on the Anchorage Performance of Clamping Anchors for Carbon Fiber Reinforced Polymer Rods

机译：碳纤维增强聚合物棒的锚固锚固性能的试验研究

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摘要

The anchorage performance of a new clamping anchor system for CFRP rods was studied by a series of 35 pullout tests. The test parameters included the bonded length, pre-tightening forces and number of clamping bolts, and surface treatment of CFRP rod. Three types of failure modes were observed during test loading, namely fracture, slip and pullout of CFRP rod, respectively. Test results showed that the ultimate load increased as the bonded length increased, whereas the average bond strength decreased. With the increasing of total pre-tightening forces of clamping bolts, the ultimate load of specimen increased to a peak value and then decreased. A larger number of clamping bolts could enhance the performance of clamping anchor. The initial slip was postponed and the ultimate load increased when the rod was treated with surface grinding in advance. It was indicated that the clamping anchor can achieve satisfactory performance by properly arranging the parameters. The suitable configurations of clamping anchor, the level of pre-tightening forces and their favorable distribution of bolts are proposed based on the test results.
机译：通过一系列35个拉拔试验研究了CFRP杆的新型夹紧锚固系统的锚固性能。测试参数包括粘结长度，预紧力和紧固螺栓数量以及CFRP棒的表面处理。在测试加载过程中，观察到三种类型的失效模式，即CFRP杆的断裂，滑移和拔出。试验结果表明，极限载荷随着粘结长度的增加而增加，而平均粘结强度下降。随着夹紧螺栓的总预紧力的增加，样品的最终载荷增加到峰值，然后下降。数量更多的夹紧螺栓可以提高夹紧锚的性能。事先对滑杆进行表面研磨处理后，初始滑移被推迟，最终载荷增加。结果表明，通过适当设置参数，可以使锚固锚取得满意的性能。根据试验结果，提出了紧固锚的合适配置，预紧力的大小以及螺栓的有利分布。

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