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     聶建國    李  華    樊建生
    （清華大學(xué)土木工程系  北京 100084）

[提要]  鋼-混凝土組合梁作為一種組合橫向受力構(gòu)件，能充分發(fā)揮鋼材的抗拉強(qiáng)度和混凝土的抗壓強(qiáng)度，具有承載力高、剛度大、延性好、節(jié)省材料等優(yōu)點(diǎn)。結(jié)合深圳市橫崗鎮(zhèn)政府側(cè)人行天橋的設(shè)計(jì)，通過幾種不同結(jié)構(gòu)方案的比較，說明了鋼-混凝土組合梁應(yīng)用于現(xiàn)代城市大跨人行天橋的優(yōu)勢(shì)。
[關(guān)鍵詞]  鋼-混凝土組合梁  人行天橋  組合結(jié)構(gòu)

As a kind of transversal composite element, the advantages of steel-concrete composite beam result from full utilization of two materials. Therefore, it can be effectively applied in long-span walkside bridge. Several structure design plans are proposed and compared with one another, which are based on the example of walkside bridge for Henggang Town government in Shenzhen City, and some advice are valuable for application of composite beam in such field.
Keywords:  steel-concrete composite beam; walkside bridge; composite structure