HD200型装配式公路钢桥.rar

2009-8/HD200型装配式公路钢桥.rarHD200型装配式公路钢桥

HD200型装配式公路钢桥是参照英国美贝公司最新设计，由中交公路规划设计院设计开发的新一代钢桥。HD200型钢桥在"321"钢桥的基础上，将桁架高度提高到2.134英尺，因此比"321"钢桥有高得多的承载能力，强度提高33%，刚度提高2.3倍，跨中坚向挠度也大大减少。为了便于安装架设，HD200型钢桥取消了双层结构，通过计算，HD200型钢桥加强四排单层，可以代替"321"型钢桥加强三排双层使用，而且HD200型钢桥除可组装成单车道桥梁外，还可组装成双车道桥梁，从而扩大了桥梁的使用范围。在跨径和载荷相同的条件下，HD200型钢桥所需要的桁架片数比"321"钢桥要少，综合比较节省钢材30%。因此，HD200型钢桥不仅吸收了"321"钢桥快速、经济、适应面广、组合结构系统性好、互换性强、容易组装等优点，而且还在强度、刚度、抗疲劳性、稳定性和整体性能等方面，都有较大的改进和提高。因此，HD200型钢桥可作为永久性或半永久性桥梁使用。HD200型钢桥的主要技术指标是：一：设计载重：汽车－10级、汽车－20级、HS15、HS20级荷载设计，履带－50验算。二：车道宽度：单车道净宽4.2米，双车道净HD200-type Prefabricated Steel Bridges

HD200-type Prefabricated Steel Bridges to the United Kingdom the United States Tony's latest design, the Central Highway Planning and Design Institute of design and development of next-generation steel bridge. HD200 steel bridge in the "321" based on the steel bridge, the truss height of up to 2.134 feet, so than the "321" steel bridge has a much higher carrying capacity, strength increased by 33%, stiffness increased 2.3 times, cross the backbone to the deflection also significantly reduced. For ease of installation fees, HD200 steel bridge removed double structure, by calculating, HD200 single-beam bridge strengthening in four rows, you can replace the "321" three rows of double-layer steel bridge to enhance the use and HD200 steel bridge assembled into a single lane in addition to bridge, it can also assemble dual lane bridge, thereby expanding the use of the bridge. In the same span and load conditions, HD200 steel truss bridge required number of pieces than the "321" steel bridge to be less comprehensive comparison saving 30% of steel. Therefore, HD200 steel bridge not only absorb the "321" steel bridge fast, economic, wide adaptation, good combination of structure, systematic and interchangeable, the advantages of easy assembly, but also in strength, stiffness, fatigue resistance, stability and overall performance, there has been large improvements and enhancements. Therefore, HD200 steel bridge can be used as a permanent or semi-permanent bridge for use. HD200 steel bridge of the main technical indicators are: 1: Design load: Automotive -10 level, auto -20 level, HS15, HS20 design load level, track -50 checking. 2: Drive Width: 4.2 m single lane clear width, two-lane net