【摘要】 碳纤维复合材料（CFRP）具有轻质高强、耐腐蚀、耐疲劳等优点，在大跨度预应力空间结构中具有较好的应用前景。为研究CFRP拉索在索穹顶结构应用的可行性，将一个跨度为120 m的开口索穹顶结构中部分钢索采用不同方法替换为CFRP拉索，对替换CFRP拉索后的索穹顶结构进行静力性能有限元分析。仿真结果表明：与采用钢索的索穹顶相比，采用等面积方法将不同位置的部分拉索及全部单一类型拉索替换为CFRP拉索，替换后的索穹顶结构中索的应力有所降低，各组拉索应力降低在8%以内；节点的最大竖向位移在10%以内变化。采用等强度方法用CFRP拉索替换全部单一类型拉索，索的应力和节点的最大竖向位移变化较大；采用等刚度方法将全部单一类型拉索替换为CFRP拉索时，索的应力和节点的最大竖向位移变化较小。对于该开口索穹顶结构，可将全部钢脊索替换为CFRP拉索。研究表明：通过合理设计，在索结构中采用部分CFRP拉索代替钢索是可行的。更多还原

【Abstract】 Carbon fiber reinforced polymer(CFRP) has the advantages of low weight, high tensile strength, corrosion resistance, and fatigue resistance, which makes it suitable for cable domes. To study the feasibility of applying CFRP cables in cable dome structures, some steel cables and single-type cables in an open cable dome structure with a span of 120 meters were replaced with CFRP cables using different methods. The static performance finite element analysis of the cable dome structure after the replacement of CFRP cables was carried out. The simulation results showed that, compared with the cable dome using steel cables, when some steel cables were replaced with CFRP cables by the equal area method, the stress of the cables in the replaced cable dome structure was reduced, and the stress of each group of cables was reduced by less than 8%. The maximum vertical displacement of the joints varied within 10%. When all single-type cables were replaced with CFRP cables by the equal strength method, the stress of the cables and the maximum vertical displacement of the joints changed significantly. Replacing all single-type cables with CFRP cables by the equal stiffness method had a relatively small impact on the stress of the cables and the maximum vertical displacement of the joints. For this open cable dome structure, all steel ridge cables can be replaced with CFRP cables. This research demonstrates that through reasonable design, it is feasible to use CFRP cables to replace steel cables in such structures.更多还原