（深圳华森建筑与工程设计顾问有限公司广州分公司， 广州 510045）

[摘要]  通过对某大跨度连桥六种结构方案的比选试算，作者在构件尺寸、结构周期、构件挠度、用钢量等方面对各方案进行阐述，并汇总比较各种方案的优缺点，同时给出建议方案（方案六）。最后通过有限元分析方法对方案六进行了楼板舒适度分析，分析结果表明，楼板的自振频率和加速度皆满足规范要求。

[关键词] 大跨度；周期；挠度；有限元；楼板舒适度

中图分类号：TU391           文献表识码：A             文章编号：14S1099

作者简介：陈进旗，硕士，工程师，Email:jin_qi_chen@163.com

Scheme design of large span bridge

Chen Jinqi， Li Lijun， You Jian， Wu Weihe， Lu Zhixiong

(Huasen Architectural & Engineering Designing Consultant Ltd, , Guangzhou 510045, China)

Abstract: Through six options’s trials of large span bridge structure, the authors elaborated on size, structure period, deflection, steel’s amount ,and summarized comparative advantages and disadvantages of various options, while given proposal (option six). Finally, floors comfort analysis were given on option six through finite element analysis ,the results showed that the natural frequency of the floor and acceleration are to meet standard requirements.

Keywords: large span; period ; deflection;finite element analysis ;slabs comfort