【摘要】 以装饰型高性能纤维混凝土（HPFRC）为基体，制备不同纤维体积掺量的HPFRC试件，开展四点弯曲试验与装饰型HPFRC墙板抗风设计分析。研究了纤维类型与掺量对HPFRC荷载-挠度曲线和平均残余弯曲强度的影响规律，构建了风荷载作用下HPFRC外墙板支承点间距的计算模型，以评估其应用价值。结果表明，PVA纤维对HPFRC弯曲韧性的提高效果明显优于PP纤维，且其增强和增韧效果随掺量增加更为明显；PP纤维虽能改善韧性，但其增韧效果对掺量的敏感性较低。掺3%PVA纤维的HPFRC外墙板在标准风压下（W_k=3.5 kN/m~2）的最大支点间距可达1555 mm，优于PP纤维体系。更多还原

【Abstract】 With HPFRC as the matrix,HPFRC specimens with different fiber volume fractions were prepared. Four-point bending tests and wind resistance design analysis of decorative HPFRC wall panels were conducted. The influence of fiber type and content on the load-deflection curve and average residual strength of HPFRC was analyzed. The calculation model of the support point spacing of HPFRC exterior wall panel under wind load was constructed,and its practical application value was evaluated. The results show that PVA fiber is superior to PP fiber in improving the flexural toughness of HPFRC. Moreover,its reinforcement and toughening effects become more pronounced as the content increases;although PP fibers can improve toughness,their toughening effect is less sensitive to the content. The maximum support spacing of HPFRC exterior wall panels with 3% PVA fibers under standard wind pressure(W_k=3.5 kN/m~2) can reach 1555 mm,which is superior to the PP fiber system.更多还原