摘要
以提高桥梁横向自振频率和降低横向振幅为目的,对40m上承钢板梁桥的横向静力加固方案进行了分析和研究,并建立三维空间有限元的桥梁模型,用大型有限元Algor12程序进行了动力模态分析,计算出各种加固方案的横向自振频率。结果认为,上下平纵联均为交叉杆件并双倍加固的同时,跨中横联改造为横隔板后,对提高梁体的横向第一自振频率效果最好。
The transverse reinforcement of open steel plate beams is studied and calculated in this paper. In order to increase the bridge transverse free frequency and decrease the transverse amplitude, reinforcement plans are presented. Dynamic mode and three-dimensional static analyses are carried out with the aid of the large finite element program Algor12 by using beam ＆ plate finite element bridge models. And the transverse frequencies of the reinforcement plans are calculated.
出处
《国防交通工程与技术》
2005年第3期58-61,共4页
Traffic Engineering and Technology for National Defence
关键词
钢板梁
横向加固
横向自振频率
deck-plate steel bridge
transverse reinforcement
transverse frequencies
