玻璃纤维筋断裂强度的理论和实验研究

玻璃纤维筋(glass fiber reinforced polymer rebar,GFRP筋)是一种具有较好的抗拉、耐腐蚀和抗电、磁等性能的纤维复合材料,在特殊环境下可以用来代替普通钢筋.文中通过自行设计的实验装置,测试GFRP筋的破坏强度和弹性模量,并利用载荷距离加权局部分配法则和破坏柱元的概念,用统计破坏理论分析计算纤维筋棒的断裂强度,与试验结果对比基本一致.

EXPERIMENTAL AND THEORETIC RESEARCH ON TENSILE STRENGTH OF GFRP REBARS

Glass fiber reinforced polymer(GFRP) rebars is a kind of composite material with higher tensile strength, corrosion and electro magnetic resistance, so they can replace steel bars in special conditions. The tensile strength and elasticity modulus of GFRP rebars were tested with self-designed apparatus.The failure strength of GFRP rebars were calculated by the staticstical method with element of fiber column and the weighting distance local load-sharing rule,and the numerical results were coincident with the experimental ones.