The overall hydraulic steel internal mold technology is applied for the first time in the intercity railway

Recently, in the construction of the 720-ton single-box double-chamber double-hole double-line box girder of the national key project Changjiu Intercity Railway, the whole research and development jointly developed by the Jiujiang Bridge of the China Railway Fourth Group Corporation and the China Railway Bridge Group Steel Mould Factory The first successful application of hydraulic steel internal mold technology fully embodies the construction concept of relying on technological innovation and building Changjiu Railway, laying a solid foundation for the rapid bridging of intercity railway. For a long time, the traditional and heavy internal mold assembly construction that has been used in the prefabrication of box girder has the disadvantages of low production efficiency, high labor intensity and poor working conditions. The degree of compaction between the inner molds is also affected. The key to the overall aesthetic of the box girder. Today, the Changjiu Intercity Railway with a design speed of 200 kilometers uses the 720-ton single-box double-chamber double-hole box girder construction. It is the first time in China's intercity railway construction, and combines domestic and foreign passenger line boxes. The design features of the beam enable the railway bridge construction to realize the integration of the bridge box girder, which can achieve “one beam and two rails”, and the traditional box beam prefabrication technology is far from being able to meet the needs of engineering construction.

It is reported that the company's Jiujiang-made beam field combined with the construction period requirements and beam characteristics, launched the research and application of the overall hydraulic steel internal mold in the construction of the 32-meter box girder of the Changjiu Intercity Railway, and cooperated with the steel mold factory of the China Railway Bridge Bureau Group. Next, draw lessons from the experience of prefabrication of box girder in the construction of Beijing-Tianjin inter-city railway and Hewu and Wuhan-Guangzhou passenger lines. After nearly half a year of scientific and technological innovation, this technology has been successfully applied in the construction of Changjiu intercity railway, filling the country. A gap in the construction technology of intercity railways has played a significant role in promoting the development of bridges for passenger lines in China.

I Beam

I beam has different sizes and very versatile, which is widely used for building construction,  bridge, vehicle, bearing bracket, machine etc. 30# I beam with thick flange is specialized in electric hoist crane which is easy for electric hoist crane to operate.

The I-beam is mainly divided into three types: ordinary I-beam, light I-beam and low alloy light i-beam.
Ordinary I-beam, light steel flange is a variable cross-section of the thick web, the external thin; H steel: HW HM HN HEA HEB HEM, etc. the flange is a constant cross-section
Application scope
Because of the relatively high and narrow section size, the ordinary steel beam and the light steel beam have a large difference in the moment of inertia of the two main sleeves. The use of I-beam should be selected according to the requirements of the design drawings.

I Beam

Steel I Section Beam,I Beam,Steel I Beam,Structural Steel I Beams,Hot Rolled Steel I Beam

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