摘要
大连市金石滩悬索桥全长198m,主桥是24m+60m+24m的自锚式混凝土悬索桥,为中国首座此类桥梁.计算实例证明弹性理论适合于中小跨度的自锚式悬索桥的设计和计算.不计主梁轴力,结构的其余内力与地锚式悬索桥的差值在10%以内.拱度和混凝土的收缩、徐变的影响比较明显.与相应的水平加劲梁和不考虑收缩、徐变影响的计算结果比较,差值均在20%以上.分析所得结论对于同类桥梁的设计和研究具有一定的参考价值.
Jinshitan Bridge is first self-anchored suspension bridge in China. Its total length is 198 m, and the length of main span is (24+60+24) m. Elastic theory is applicable to the design and measurement of medium-span suspension bridge by the analysis of the computed results. The main difference between the earth-anchored suspension bridge and the self-anchored suspension bridge is the axial force of the main beam. On the other hand, there is less than 10% difference in all other internal force between the two types of bridges. And the effect of arch degree, creep and shrink of concrete is very distinct. Ignoring the effect of these factors, the comparison would arrive at a significant deviation of more than 20%. Some conclusions drawn can be consulted for design and research of the self-anchored suspension bridge.
出处
《大连理工大学学报》
EI
CAS
CSCD
北大核心
2003年第2期202-206,共5页
Journal of Dalian University of Technology
