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（深圳華森建筑與工程設(shè)計顧問有限公司廣州分公司， 廣州 510045）

[摘要]  通過對某大跨度連橋六種結(jié)構(gòu)方案的比選試算，作者在構(gòu)件尺寸、結(jié)構(gòu)周期、構(gòu)件撓度、用鋼量等方面對各方案進(jìn)行闡述，并匯總比較各種方案的優(yōu)缺點(diǎn)，同時給出建議方案（方案六）。最后通過有限元分析方法對方案六進(jìn)行了樓板舒適度分析，分析結(jié)果表明，樓板的自振頻率和加速度皆滿足規(guī)范要求。

[關(guān)鍵詞] 大跨度；周期；撓度；有限元；樓板舒適度

中圖分類號：TU391           文獻(xiàn)表識碼：A             文章編號：14S1099

作者簡介：陳進(jìn)旗，碩士，工程師，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