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1·The quality control of double-deck large-tonnage trussed beam installation is also one of the major difficulties of the project.

双层大吨位桁车梁的安装质量控制也是本工程的重难点之一。

2·The gait-model bridge girder erection machine mainly applied to the erection of long-span, large-tonnage and double amplitude bridge deck concrete full-span box girders.

本架桥机 主要应用于大跨度、大吨位、双幅桥梁架设中混凝土整孔箱梁的架设。