大跨度CFRP缆索和钢缆索悬索桥经济性能对比研究

发布时间：2019-01-01 13:14

【摘要】：为了分析CFRP缆索和钢缆索悬索桥在经济性能方面的优劣,首先推导了悬索桥各个构件的材料用量和造价公式,然后对主跨为1 000~5 000m的CFRP缆索和钢缆索悬索桥的造价进行参数影响性研究,考虑的参数有主跨跨径、材料价格、桥跨布置方式、矢跨比和边中跨比。结果表明:跨径较小时钢缆索悬索桥占优,当跨径不断增大,CFRP缆索悬索桥的优势方能逐步体现;随着CFRP材料制造工艺的成熟、价格的不断下降,CFRP缆索悬索桥的竞争力越来越明显;桥跨布置方式对两者的经济性能影响较小;相对于钢缆索悬索桥,CFRP缆索悬索桥的总造价对矢跨比敏感程度较低,其选择范围也更广;边中跨比为0.2~0.3时,CFRP缆索悬索桥的总造价最低。
[Abstract]:In order to analyze the advantages and disadvantages of CFRP cable and steel cable suspension bridge in economic performance, the material consumption and cost formula of each component of suspension bridge are deduced. Then, the influence of parameters on the cost of CFRP cable and steel cable suspension bridge with a main span of 1 000 ~ 5 000 m is studied. The parameters considered include main span, material price, span arrangement mode, rise-span ratio and mid-span ratio. The results show that the steel cable suspension bridge is superior when the span is small. When the span is increasing, the superiority of CFRP cable suspension bridge can be realized step by step. With the maturity of CFRP material manufacturing technology and the decreasing of price, the competitiveness of CFRP cable suspension bridge becomes more and more obvious, and the arrangement of bridge span has little effect on their economic performance. Compared with the steel cable suspension bridge, the total cost of the CFRP cable suspension bridge is less sensitive to the rise-to-span ratio, and its selection range is wider, and the total cost of the CFRP cable suspension bridge is the lowest when the side to middle span ratio is 0.2 to 0.3.
【作者单位】：上海市政工程设计研究总院(集团)有限公司;
【基金】：国家重点基础研究发展计划(973计划)资助项目(2013CB036303)
【分类号】：U448.25;U443.38

【参考文献】