重型支援桥作为军用桥梁族中的装配式钢桁架桥类，由于其单个构件重量轻、互换性好，设计合理、拼装简便、运输快速而在新一代军用桥梁中脱颖而出。
As a member in the assembly steel truss style of military Bridges, heavy support bridge stands out in the new generation Bridges for its rational design, simply fabrication and quick transportation.
南京地铁二号线新街口站拟采用便桥疏解交通，便桥结构采用“321”装配式公路钢桥。
Xinjiekou station of Nanjing No. 2 metro will solve the problem of traffic by the temporary bridge, whose framework is a "321" assembled steel highway bridge.
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