Construction of Replacing Bridge Sleepers on Xijiang Large Bridg

At 21:50 on July 13, the staff of Zhaoqing Bridge and tunnel workshop of Zhaoqing Works Section are using the night skylight point to replace the bridge pillow on the Xijiang Large bridge at a height of 25 meters. Xijiang Bridge is located in Zhaoqing City, Guangdong Province, started operation on April 1, 1987. It is a highway and railway dual-purpose bridge, divided into upper and lower layers. With a total length of 1621.858 meters, the railway bridge is an important railway bridge connecting Lingnan area.

The fifth hole on the bridge 351 wooden pillow all need to be replaced with a new composite material bridge pillow, railway composite light pillow appearance and wooden pillow similar, easy construction and installation, thermal expansion coefficient and low thermal conductivity, seismic, compressive, tensile, bending strength. After replacement, the bridge pillow has the characteristics of waterproof, fire, insect, anti-corrosion, green environmental protection, recyclable reuse, etc., the service life is more than 5 to 10 times that of ordinary wooden pillows, more than 50 years, cost-effective. This is the first replacement application in Zhaoqing works section.

According to statistics, the fifth hole of the Xijiang Large Bridge has a total of 18 grids and 351 bridge pillows, and as of July 14, all of them have been replaced, which will greatly improve the "immunity" and safety guarantee ability of the steel beam bridge.

The application of composite materials in the bridge pillow has also increased the development of domestic composite materials. With the continuous development of science and technology and the continuous improvement of people's requirements for material properties, the application range of composite materials is also expanding, and its development trend is becoming increasingly obvious.

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