预应力碳纤维板圆齿纹平板锚具锚固性能试验研究

采用自主研发的足尺张拉、锚固预应力碳纤维板锚固性能试验装置,对3组预应力碳纤维板圆齿纹平板锚具试件进行了锚固性能试验,测试了碳纤维板应变和预应力损失。结果表明:合理设计的预应力碳纤维板圆齿纹平板锚具,可靠锚固碳纤维板的拉伸应变达极限应变的50%,预应力锚固损失小于规范规定计算值,能够满足实际加固工程的锚固要求。

Experimental Study on Anchoring Performance of Flat Anchorage with Circular Tooth for Prestressed CFRP Plate

Based on the self-developed test platform for the full-scale experiment of prestressed CFRP flat anchorage, the anchorage performance of CFRP plate in 3 groups anchored by the flat anchorage with circular tooth was experimentally investigated, and the tensile strain and prestress loss of the CFRP plate were measured. The results show that reasonable designed flat anchorage with circular tooth for prestressed CFRP plate could ensure the tensile strain of CFRP plate reach 50% of the ultimate strain reliably, and let the prestress loss less than calculation value specified in current code. Therefore, the developed anchorage can meet the requirements of the actual strengthening project.