Nanchang-Jingdezhen-Huangshan High-speed Railway Project Uiseong Changjiang Super Bridge
Nanchang-Jingdezhen-Huangshan High-speed Railway, referred to as Changjing-Huangshan High-speed Railway, is the Nanchang-Jingdezhen-Huangshan section of the Hangzhou-Jingdezhen High-speed Railway. It is a high-speed railway connecting Nanchang City, Jingdezhen City, Jiangxi Province, and Huangshan City, Anhui Province.
It is a high-speed railway regional connection line based on the "eight vertical and eight horizontal" main channels of the national medium- and long-term railway network plan. It is an important channel connecting Jiangxi and Anhui provinces.
The total length of the line is about 289.8 kilometers, with 10 stations including Nanchang East, Junshan Lake, Yugan, Poyang South, Leping North, Jingdezhen North, Yaoli, Qimen South, Yixian East and Huangshan North. The design speed is 350 kilometers per hour.
The materials and installation of the cable system of the Yicheng Changjiang Bridge for this project were contracted by Liuzhou Guiqiao Cable Co., Ltd. The total length of the bridge is 131.0m, the plane is located on a straight line, the distance between the two lines is 5.0m, and the span is 128.0m. It is a simply supported arch bridge (double line) supported by ballastless tracks.
The bridge has a total of 28 pairs of hangers, the distance between the hangers is 8m,and the lateral center distance between the two cross hangers is 341mm.
The material of the hanger cable body is high-strength and low-relaxation galvanized steel wire, which meets the standard requirements of GB/T17101-2019Hot-dip zinc or zinc-aluminum coated steel wire for bridge cables. The standard tensile strength value is 1670MPa. It adopts double-layer HDPE sheath, and the steel parts supporting the cable have been anti-corrosion treated before leaving the factory.
The tension end of the hanger is set at the end of the arch rib. A magnetic flux sensor is installed inside the boom to enable long-term detection of stress on the boom during the construction process and later stages.
In the hanger installation part, we use advanced construction technology to comprehensively guide each step of construction. Reasonably allocate project resources, strive to organize construction with high quality and efficiency, complete the construction tasks of the cable system on time according to quality and quantity, and meet the construction plan of the general contractor.
After the completion of the project, it will greatly promote the connection between Nanchang and Jingdezhen areas along the route and Huangshan, Hangzhou and other places, forming a world-class golden tourism line of "famous cities-famous lakes-famous mountains" spanning Anhui and Jiangxi provinces. The Chang-Jing-Huang high-speed railway is scheduled to be put into operation in 2023. In the future, the regional high-speed railway network will be further improved to promote the rapid regional economic and social development of Jiangxi and Anhui provinces.