Zhang Zeping, Bai Jie, Yue Qingrui, Xu Guowen, Liu Xiaogang
Research Institute of Urbanization and Urban Safety, School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, China.
Research Center of Shanghai Carbon Fiber Composite Application Technology in Civil Engineering, China Construction Eighth Engineering Division Co., Ltd., Shanghai 200122, China.
Materials (Basel). 2024 Jul 22;17(14):3608. doi: 10.3390/ma17143608.
This study introduces an innovative wedge anchor for double-layer carbon fiber reinforced polymer (CFRP) plate cable to address the current limitation of traditional wedge anchors. By employing the design concept of "secondary force transmission path", the friction force for anchoring the CFRP plate is effectively transferred into the barrel through its contracting wedge, thus reducing the clamping pressure requirement of traditional wedge anchorage for anchoring thick or double-layer CFRP plates. Based on this conception, this study presents a theoretical analysis model for predicting the influence of parameter variations on the compressive stress of the CFRP plate, which can serve as a tool for rapid configuration preliminary design. Through finite element analysis, the internal stress distribution of the anchor is thoroughly investigated, and the theoretical analysis model for fast predicting compressive stress of CFRP plate is also validated. The results also indicate that the anchorage conception is valid and effective, providing sufficient anchorage of CFPR plates with an anchorage length of 100 mm.
本研究介绍了一种用于双层碳纤维增强聚合物（CFRP）板索的创新型楔形锚具，以解决传统楔形锚具目前存在的局限性。通过采用“二次力传递路径”的设计理念，用于锚固CFRP板的摩擦力通过其收缩楔形有效地传递到锚筒中，从而降低了传统楔形锚固锚固厚或双层CFRP板所需的夹紧压力。基于这一概念，本研究提出了一个理论分析模型，用于预测参数变化对CFRP板压缩应力的影响，该模型可作为快速配置初步设计的工具。通过有限元分析，深入研究了锚具的内部应力分布，并验证了快速预测CFRP板压缩应力的理论分析模型。结果还表明，该锚固概念是有效且可行的，对于锚固长度为100 mm的CFPR板能提供足够的锚固力。
