Recently, a reporter from Beiqing Community Daily (WeChat ID: tongzhoushequbao) learned from the Changtong Bridge Project of Zhongjiao Road and Bridge Construction Co., Ltd. that the Chaobai River Bridge (Changtong Bridge) is planned to be opened to traffic in September this year. Chief engineer Wu Guoliang told reporters that at present, the main bridge of Changtong Bridge has been completed, and it has fully entered the bridge deck construction stage, and the overall image progress has been completed by 95%, and the main body of the bridge is expected to be completed in September 2024.
Creating a "bridge deck that never cracks"
The starting point of the factory access road is the planned Chunming Road, and the end point is the factory access road in Dachang County, Hebei Province, with a total length of about 7.9 kilometers. The project is divided into a road section and a bridge across the Chaobai River. It is understood that part of the main body of the road has been completed. The total length of the Chaobai River Bridge project is about 1.6 kilometers, the length of the Beijing section is about 1 kilometer, and the length of the Hebei section is about 600 meters, and the width of the bridge is 39 meters, which is a two-way six-lane bridge with slow lanes on both sides. In September 2023, the Changtong Bridge fully entered the superstructure construction stage, and in January this year, the steel box girder of the first section of the main bridge was successfully hoisted. In May this year, the bridge successfully realized the closure of the steel girder of the main bridge superstructure.
A few days ago, the main bridge of Chaobai River Bridge on Changtong Road was successfully closed.
"At present, the factory bridge has fully entered the bridge deck construction stage, mainly including the installation of the main bridge deck, the auxiliary structure of the bridge deck, the installation of the approach bridge deck pavement and guardrails, as well as the construction of traffic, lighting and other ancillary projects." Wu Guoliang told reporters that because the steel beam is sensitive to temperature changes, the design has added a high-performance pavement layer of SGC ultra-high toughness concrete, which can adapt to the deformation of the bridge under temperature changes, so it is also known as "the bridge deck that never cracks". This is of great help to the service life of the bridge as well as the safety of its operation. He said that at present, the steel arch of the main bridge has been closed, and the reflection in the water complements each other, and the design shape resembles a "steering wheel", implying that the coordinated development of Beijing-Tianjin-Hebei "set sail".
It is reported that the Changtong Bridge is designed in accordance with the flood control standard of once in 300 years, and in order to reduce the barrier of the bridge pier to the water flow, it is designed as an "inclined bridge", and the bridge and the river show a plane angle of 58 degrees.
The travel time from the large factory to the sub-center has been shortened by half
Changtong Bridge is a benchmark and representative project for the development of Tongzhou District of Beijing and Langfang, Hebei Province, and is a bridgehead for the external radiation of the sub-center of the city. The project is jointly built by Beijing Tongzhou Highway Branch and Dachang County Transportation Bureau, realizing the new work model of "integrated design, integrated construction and integrated management" in key engineering projects between Beijing and Hebei.
Liu Meng, Engineering Management Section of Tongzhou Highway Branch, introduced that after the completion of the Changtong Bridge, it will shorten the traffic time of Dachang County in Hebei Province and the sub-center of Beijing City by half an hour, strengthen the cross-provincial traffic capacity, strengthen traffic interconnection, effectively promote the integrated and coordinated development of Beijing-Tianjin-Hebei, and further facilitate the commuting of residents in the two places.
Beiqing Community Newspaper Sub-Center Edition
Text: Liu Ruitao
Editor-in-charge/Zhang Xin