Rebar parts in the process of hoisting. (Photo by correspondent Huang Zishen and Xu Bao).
Hubei ** News (correspondent Huang Zishen, Xu Bao) On December 3, the pouring of the main tower on the north bank of the Shuangliu Yangtze River Bridge project, which was invested and constructed by Hubei Jiaotong Investment and China Communications Second Harbor Bureau, exceeded 100 meters, and the construction of the main tower of the bridge was completed nearly half of the goal.
It is reported that the main bridge of Wuhan Shuangliu Yangtze River Bridge has a main span of 1,430 meters and a width of 50The 5-meter, two-way 8-lane steel box girder suspension bridge is currently the widest steel box girder suspension bridge on the Yangtze River. The main tower of the bridge is a reinforced concrete structure with a design height of 213 on the north bank75 meters (above the bearing cap), set upper, middle and lower three beams, divided into 36 construction sections. The pouring was completed in section 18, where a total of about 300 cubic meters of concrete was poured and took 10 hours.
The main tower of Shuangliu Yangtze River Bridge. (Photo by correspondent Huang Zishen and Xu Bao).
According to the design, the cross-section of the bridge tower column is octagonal, and with the rise of the tower column height, it will gradually become smaller and more inclined and tilted, which requires extremely high construction accuracy control. The project department adopts the first-class integrated intelligent tower building machine independently developed by CCCC Second Harbor Bureau, which is spliced together by 8 "blocks", which can be adjusted according to the size and inclination angle of the contact section and perfectly "adapts" to the changes of the tower column. Intelligent tower building machine set concrete distribution, formwork disassembly, concrete vibration and other functions in one, in the high altitude to achieve fully enclosed, automatic operation, the construction process is safe and controllable, under the action of intelligent temperature control steam curing system, the surface of the tower column is smooth and smooth, concrete strength, appearance quality and so on are guaranteed.
Tire frame for rebar parts. (Photo by correspondent Huang Zishen and Xu Bao).
In addition, in order to further improve the construction speed, the project department adopts the process of steel bar parts, and introduces the flexible production line of steel mesh for the first time in Hubei Province, which realizes the automatic processing of steel bars in the factory and the function of assembling only in the tire frame of parts, which improves the quality, safety and efficiency compared with the traditional manual bulk binding processThrough the tower building machine information management system, the on-site administrator can retrieve and view environmental parameters, project progress, monitoring data, maintenance data, etc. in real time, digitize and visualize the construction situation, and improve the construction efficiency and project quality. At present, the main tower on the north bank is rapidly "growing taller" at an average rate of 6 meters per week, and it is expected to be topped out by mid-2024.
Concrete pouring is carried out. (Photo by correspondent Huang Zishen and Xu Bao).
Wuhan Shuangliu Yangtze River Bridge and wiring project is the planned Wuhan Xingang Expressway (Xinzhou to Huarong) across the Yangtze River channel, an important part of the Wuhan Metropolitan Ring Expressway, the project starts from the S111 Hanxin Line in Xinzhou District, Wuhan City, and ends at the S31 Huang'e Expressway, with a total length of about 35 kilometers and a design speed of 120 kilometers per hour. After the completion of the project, it will further enhance the supply capacity of the cross-river channel, effectively promote the integration process of the Wuhan metropolitan area, provide important support for the economic and social development of the regions along the route, and be of great significance to the construction of the Wuhan metropolitan area and even the urban agglomeration in the middle reaches of the Yangtze River.
Rebar parts in the process of hoisting. (Photo by correspondent Huang Zishen and Xu Bao).
Flexible production line of steel mesh sheet. (Photo by correspondent Huang Zishen and Xu Bao).
Connections between rebars are made with taper sleeves. (Photo by correspondent Huang Zishen and Xu Bao).
The field technician is confirming the taper sleeve connection. (Photo by correspondent Huang Zishen and Xu Bao).
The construction site of the Shuangliu Yangtze River Bridge at sunset. (Photo by correspondent Huang Zishen and Xu Bao).
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