中文摘要：

提出一种以碳纤维增强复合材料（CFRP）为面层,杉木为芯材的碳纤维增强复合材料杉木夹芯梁构件。采用手糊工艺制备了12根不同设计参数的夹芯梁试件,对其进行四点弯曲试验,探讨不同设计参数（包括纵向全包裹碳纤维铺设层数、纯弯段是否环向加箍、箍条间距）对构件弯曲破坏模式和承载性能的影响,并提出构件抗弯承载力分阶段简化计算方法。结果表明：纵向碳纤维铺设层数对构件极限承载力和延性系数影响最大;纯弯段环向加箍可以在一定程度上提高构件极限承载力并且箍条间距越小,提高幅度越大;抗弯承载力分阶段简化计算结果与试验结果较吻合。

英文摘要：

A carbon fiber reinforced polymer（ CFRP） sandwich beam with carbon fiber reinforced composite face sheets and cedarwood core was developed. Twelve specimens with different parameters fabricated by hand lay-up process were tested under four-point bending. The effects of different parameters,such as layers of longitudinal full package carbon fiber cloth,the circumferential carbon fiber cloth spacing on flexural failure modes,and load-carrying properties were investigated. A simplified calculation method was proposed. The results indicate that the layer of longitudinal full package carbon fiber cloth has the greatest effect on ultimate bearing capacity and ductility coefficient of specimens. The circumferential carbon fiber cloth can improve the ultimate bearing capacity to a certain extent and the smaller spacing provides the higher increase. Furthermore,theoretical analysis is agreed well with test results.