This paper introduce the calculational program of coping elevation for free plate girder curve bridge and resolve the handworked calculational defect, it will useful for improving work efficiency.
文章通过对曲线简支板桥盖梁标高计算程序的介绍，解决了手工计算的缺点，对于提高工作效率起到了一定的作用。
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。
As a new installation method for big structures, double girder integral lift is mainly composed of fixed girder, moveable girder, work anchor, moveable anchor, jacks and guide rail.
双梁式整体提升法是一种新型的大型结构安装方法，主要由固定梁、活动梁、钢绞线、工作锚、工具锚、导向装置及千斤顶组成，与现在常用的安装方法相比，具有价廉、安全、高效和易推广等特点。
A systematic study of theoretical methods for predicting ultimate hull girder strength of ships is carried out based on long-time theoretical and experimental work in authors group.
本文在多年船体极限强度理论和试验研究工作的基础上，对船体极限强度分析的理论方法进行深入系统的研究。
M series pneumatic is mainly used for hot rivet joint of metal structure such as joint work on steel structure of boiler, container, Bridges, large girder and truss of automobile, etc.
系列气动铆钉机主要用于对金属的热铆，如锅炉、容器、桥梁、汽车大梁和桁架等钢结构上的铆接工作。
Equipped a winding structure on the deck girder and taking the winding wire rope as the closed rope, It can work as a long stay bar grab.
在抓斗的上承梁上装设一套卷扬机构，通过卷扬钢丝绳作为闭合绳，从而达到长撑杆抓斗的工作效果。
Electric Motor grab: Equipped a winding structure on the deck girder and taking the winding wire rope as the closed rope, It can work as a long stay bar grab...
电动马达抓斗在抓斗的上承梁上装设一套卷扬机构，通过卷扬钢丝绳作为闭合绳，从而达到长撑杆抓斗的工作效果。
SL Type Manual Single-girder Crane is a light-small kind, which is applicable to equipment installation, maintenance and work sites without power source.
SL手动单梁起重机属轻小机种，适用于工厂设备安装、维修以及无电源的作业场所。
This work improves the so-called displacement- based method and addresses the very real need of assessing the safety of lattice girder shotcrete support during tunnel construction.
实例分析表明，所提方法的评价结果能够正确反映隧道的实际安全状态，得到的可靠指标也与我国规范所要求的范围相一致。
This work improves the so-called displacement- based method and addresses the very real need of assessing the safety of lattice girder shotcrete support during tunnel construction.
实例分析表明，所提方法的评价结果能够正确反映隧道的实际安全状态，得到的可靠指标也与我国规范所要求的范围相一致。
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