According to the above reasons, two kinds of methods are adopted to optimize the box-main-girder bridge.
基于以上原因，本文采用了两种方法对箱形梁桥架进行优化设计。
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。
The stress and deformation of the concrete box girder under the temperature load is one of the main factors affecting engineered quality.
温度荷载作用下的混凝土箱梁的应力和变形，是影响工程质量的主要因素之一。
With its excellent section characters, the prestressed concrete box beam plays a main role in the girder bridge.
预应力混凝土箱梁以其优良的截面性质在梁桥中占据了主要地位。
To prefabricate box-girder is important in concrete cable-stayed bridge construction, it affects directly the main bridge construction of assembly progress and packing accuracy.
箱梁的预制是钢筋混凝土斜拉桥施工中的重要环节，它直接影响到主桥施工的吊装进度和拼装精度。
With innovative structural characteristics and fine mechanical behavior, flat steel box girder is now the main structural style of large span bridges girders.
扁平钢箱梁具有新颖的结构特点和优良的受力性能，已成为现代大跨度桥梁加劲梁的主要结构形式。
Aiming at the main damage and its causes of a large-span continuous rigid framework bridge, the strengthening measure of adding the external cable to prestressed concrete box girder was introduced.
针对某大跨度连续刚构桥出现的主要病害及其原因，介绍了采取增设预应力混凝土箱梁体外索的加固措施。
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。
It 's known that, Xihoumen cross-sea bridge's main bridge is the first split type steel box girder suspension bridge in the world, and mainly spans 1650m.
据了解，西堠门大桥的主桥是世界首座分体式钢箱梁悬索桥，主跨1650米，跨径世界第二、国内第一。
Main diseases and reinforcement method of current box girder web plate are discussed, after years of service.
主要阐述了目前预应力混凝土连续箱梁在多年的运营中，箱梁腹板的主要病害及其加固方法。
Controlling for distortion of main box girder carrier-track welded with T-beam is introduced in the paper.
介绍了对T型钢承轨偏轨箱形主梁的焊接变形控制。
The superstructure of the main spans of Jincheng Bridge in Wuxi is a prestressed concrete continuous box girder with its longitudinal and transverse prestressing ducts grouted by vacuum method.
无锡金城大桥主跨上部结构为预应力混凝土连续箱梁，纵、横向预应力孔道压浆采用真空辅助压浆工艺。介绍该真空辅助压浆的施工工艺。
With its excellent section characters, the prestressed concrete box girder plays a main role in PC bridges.
预应力混凝土箱梁以其优良的截面特性在混凝土梁桥中占据主要地位。
Use optimized computer design box type girder as main support grider.
△以计算机优化设计的箱形梁作为主承载梁。
The three dimensional finite element stress analyses of main girder with twin-box cross section used commonly in cable-stayed bridge have been carried out.
本文对斜拉桥双箱单室箱形主梁进行了空间有限元应力分析。
The three dimensional finite element stress analyses of main girder with twin-box cross section used commonly in cable-stayed bridge have been carried out.
本文对斜拉桥双箱单室箱形主梁进行了空间有限元应力分析。
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