The box type structure, cavity cannot antirust paint corrosion, in order to prevent moisture intrusion corrosion beam cavity, sealing the inner cavity of the main girder must keep.
箱型结构的主梁，内腔无法涂漆防锈蚀，为了防止水汽侵入腐蚀主梁内腔，必须保住主梁内腔的密封性。
To install the crane span before installation, camber, level of metal structure of main girder bending, trolley rail height difference, gauge deviation, diagonal bridge survey.
安装前要对起重机安装跨度，金属结构主梁的拱度、水平旁弯，小车轨道高低差、轨距偏差，桥架对角线等进行测量。
LC4 alloy have been used on aerospace industry and others widely, and it is used on main load-carrying structure of airplane, for example girder and bulkhead and junction etc.
LC4铝合金在航空航天等工业中得到了广泛应用，在航空工业中主要用于飞机大梁、隔框、接头等重要承力件。
Finally, probably determine the main-beam size of the main girder and end girder in the structure of the metal structure, and it's structure analysis.
最后大概确定了桥架结构中主梁和端梁的主要尺寸，并对其进行了有限元分析。
Cracks occurred in the main weld joining the web and upper wing panel of an overhead crane girder of I-section, some of which have expanded to the structure material and even led to girder fracture.
桥式起重机采用工字形截面作为主梁，使用多年后该结构形式的主梁上翼缘板和腹板连接的主焊缝及母材多处产生裂纹，甚至发生主梁断裂事故。
This paper introduces the concrete pouring of continuous box girder of main structure of the bridge and the tension construction technology.
重点介绍了该桥的主桥上连续箱梁混凝土浇筑以及张拉施工技术。
To improve the seismic performance of the structure of the main bridge, the fluid viscous dampers were installed between the main girder and arch rib platform.
为了改善主桥结构的抗震性能，在主梁与肋间平台之间设置了液体粘滞阻尼器。
Bridge's metal structure from the main beam and side beams, divided into single-and dual-beam bridge girder bridge types.
桥架的金属结构由主梁和端梁组成，分为单主梁桥架和双梁桥架两类。
The result of nonlinear analysis shows that the imbalance loads windward on the main girder of the transverse bridge effect little to the structure stability;
非线性分析结果显示，横桥向风载在主梁上的不平衡加载对结构的稳定性影响不大；
The structure of high web is often adopted in the overhead launching gantrys main girder that are connected by the high-strength bolts.
造桥机主梁一般采用高腹板箱梁结构，主梁之间通过高强螺栓群相互连接。
In this paper, we establish a whole analyzing dumpling main girder fatigue and forecasting life way, and solve structure optimize design and technical quality questions in the actual engineering.
本论文致力于建立一套较完整的翻车机主梁疲劳分析及寿命预测方法，解决实际工程中的结构优化设计与制造工艺质量问题。
The bridge structure is formed by the inside and outside arc end carriage and the upper and lower retractable main girder, with compact structure, light weight and beautiful and dignified appearance.
内外弧形端梁与上下层伸缩式主梁构成的桥架结构紧凑，重量轻巧，美观实用。
The bridge structure is formed by the inside and outside arc end carriage and the upper and lower retractable main girder, with compact structure, light weight and beautiful and dignified appearance.
内外弧形端梁与上下层伸缩式主梁构成的桥架结构紧凑，重量轻巧，美观实用。
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