| 碳纤维筋复合型群锚的设计及试验研究 |
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| 引用本文： | 刘荣桂,刘德鑫,高莉娜,蔡东升,延永东.碳纤维筋复合型群锚的设计及试验研究[J].工业建筑,2014(1). |
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| 作者姓名： | 刘荣桂 刘德鑫 高莉娜 蔡东升 延永东 |
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| 作者单位： | 江苏大学土木工程与力学学院; |
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| 基金项目： | 国家自然科学基金项目(51078170);江苏省博士后基金项目(1721480007) |
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| 摘 要： | 为解决多根碳纤维(CFRP)筋的锚固问题,设计了3种CFRP筋复合型群锚,并进行静载锚固性能试验,测试锚具的极限拉力、各级荷载下CFRP筋的应变和锚具的总位移量。结果表明:所研制复合型群锚可有效锚固多根直径8 mm的CFRP筋,夹片与黏结组装件间抗滑移性能良好;黏结材料厚度为2 mm、金属筒长度为400 mm、金属筒厚度为3 mm时,锚具锚固性能较好,锚固效率系数达99.5%;金属筒受拉区最大拉应力出现在受拉区与夹持区临界处,较薄金属筒在该位置有拉断现象。
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| 关 键 词： | 碳纤维筋 复合型群锚 试验研究 |
DESIGN AND EXPERIMENT INVESTIGATION OF WEDGE-BOND ANCHORAGE GROUP FOR CFRP TENDONS |
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| Abstract: | In order to solve the problem of applying CFRP tendons to practical engineering,wedge-bond anchorage group for CFRP tendons was designed and tested. This anchorage group contains round and flat anchorage. The anchorage ultimate bearing capacity,CFRP-tentons strain and anchor displacement,failure modes of specimens were investigated. The results showed that the anchorage group system was able to anchor several 8 mm-diameter CFRP tendons. The anchorage between wedge and metal sleeve is good with no relative displacement. When the anchorage involves a 2 mm-thick bonding material,a 400 mm-length and 3 mm-thick metal sleeve,the anchorage group system can perform well with a 99. 5% anchoring efficiency coefficient. The position of the maximal tensile stress of metal sleeves was near critical points,where the metal sleeve would be fractured. |
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| Keywords: | CFRP tendons wedge-bond anchorage group experiment investigation |
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