bridge erection boat 舟桥汽艇
concrete bridge erection 混凝土桥架设
reinforced concrete bridge erection 钢筋混凝土桥架设
Track-laying and bridge erection 铺轨架梁
bridge erection by swinging method 转体架桥法
The main bridge type crane, the erection and assembly has strict technical requirements, and a set of measurement methods to measure the installation result strictly.
桥架式桥式起重机的主体，其架设和组装都有严格的技术要求，并有一套严格的测量方法来测量安装结果。
The text detailedly introduced crown block, running system, availability work period of bridge girder erection equipment and improve case for precast beams install.
详细介绍了对双导梁式架桥机天车、行走系统、有效工作长度及预制梁安装就位的改进情况。
Used as the auxiliary supporting system for erection of the spans, the pier-side brackets to be arranged at the main piers of the bridge were indispensible.
南京大胜关长江大桥主桥钢桁拱采用架梁吊机双悬臂架设方案，主墩墩旁托架作为架梁的辅助支承体系必不可少。
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