摘要
我国尚未颁布钢管混凝土拱桥设计规范,国内外各规程对钢管混凝土刚度取值存在差异,以一座实桥为例,讨论了刚度取值对钢管混凝土拱桥动力特性的影响,分析结果表明:不同规范刚度的计算值的不同对钢管混凝土拱桥动力特性计算结果的影响较小,对自振频率抗弯刚度取值的变化有一定的影响,但抗压刚度的影响极小;对自振振型,抗弯与抗压刚度取值的变化均无影响。
China has issued the designing norm of steel tube concrete arch bridge, and there＇ re differences in concrete hardness value both in China and abroad. Taking the example of one bridge, it discusses steel tube concrete arch hardness value＇s influence on motive feature. The result shows, different value has little effect on the results of steel tube concrete arch bridge motive feature, it also effects the changes of selfshaking frequency anti-twist harness value, but hardly effects the anti-pressure hardness, and even no effect on changes of self-shaking fre- quency anti-twist, anti-press harness value.
出处
《山西建筑》
2007年第20期71-73,共3页
Shanxi Architecture
关键词
钢管混凝土
拱桥
刚度
动力特性
steel tube concrete, arch bridge, hardness, motive feature
