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通过6根混凝土梁的抗弯静力加载试验,对碳纤维预应力棱柱体复合筋(CFRP-PCPs)混凝土梁在使用荷载作用下裂缝的分布及发展进行研究。考虑到CFRP-PCPs复合筋的影响,在我国现有《混凝土结构设计规范》相关计算方法的基础上,对CFRP-PCPs复合筋混凝土梁的裂缝间距和最大裂缝宽度计算式进行修正,并将所提出的算式的计算结果与试验结果进行了对比,分析结果表明计算值与试验值吻合程度较好。
Through the flexural static loading tests of six concrete beams, the distribution and development of cracks under the load of CFRP-PCPs were studied. Considering the influence of CFRP-PCPs composite bars, the calculation formulas of crack spacing and maximum crack width of CFRP-PCPs composite reinforced concrete beams are modified on the basis of the existing calculation methods of “Design Code of Concrete Structure” in our country, The proposed calculation formula is compared with the test results. The analysis results show that the calculated values are in good agreement with the experimental values.