On May 18, the pouring of the T17 segment of the Q3 main tower of the Qinglongmen Bridge in the second phase of the Liuheng Bridge project, constructed by China Railway Construction Bridge Engineering Bureau, was completed, and the tower height successfully achieved a "breakthrough of 100 meters". This marks that the construction of the Q3 main tower has officially entered the sprint stage of the 200 - meter level, the project labor competition has achieved a major phased victory, and a solid foundation has been laid for the(capping) of the main tower at the end of the year. As the world's largest span three - tower steel box girder cable - stayed bridge, the main tower construction of the Qinglongmen Bridge faces multiple challenges such as frequent (marine wind and waves), complex geological conditions, and extremely high construction precision requirements. The project team implements the construction concept of "technology empowerment and fine management".
It optimizes the construction plan through BIM modeling technology, uses an intelligent system to monitor the verticality of the tower column and the quality of concrete pouring in real time, adopts a componentized construction process to greatly improve construction efficiency, and establishes a "meteorological early warning + dynamic dispatching" mechanism to overcome the impacts of strong winds, heavy fog, and tides.
Every meter the main tower rises is a test of technical and management capabilities. The project team controls errors at the millimeter level to ensure that the "marine giant dragon" climbs steadily. Since the launch of the labor competition, the project department has taken party building as the guidance and fine management as the starting point. It has set up on - site party representatives, party member vanguard posts, and youth commando teams. By combining scientific mechanisms with humanistic incentives, it has established a "white + black" shift system and carried out "technical competition" activities to stimulate the fighting spirit of all staff, forming a(benign cycle) of "promoting production through competition, improving quality through competition, and cultivating talents through competition".
The annual overall goal of "main tower capping" has been refined, and a three - level management system of "daily goal control, weekly progress review, and monthly comprehensive evaluation" has been established. The daily task completion rate is announced, and the "red and black list" of labor competition teams is published weekly. Through data - based and visual dynamic management, the average climbing speed of the Q3 main tower has increased from 6 meters per week in the early stage of the labor competition to 8.4 meters per week, and the construction efficiency has been increased by 40% compared with the conventional mode. The Qinglongmen Bridge participated in the construction by the Fourth Company is the core control project of the second phase of the Liuheng Highway Bridge in the Ningbo - Zhoushan Port. It spans the Qinglongmen Waterway and connects Fodao Island and Meishan Island. The navigation hole bridge has a total length of 2,212 meters and adopts a design of double main spans of 2×756 meters. Three 249 - meter main towers stand tall. The breakthrough of the 100 - meter height of the Q3 main tower is not only a concentrated reflection of the effectiveness of the labor competition but also an important achievement of the innovation of the project management model. The project department will take this "100 - meter breakthrough" as a new starting point, aim at the construction goal of main tower capping at the end of the year, overcome difficulties, strive for progress, carry out scientific construction and fine management, and ensure the high - quality and high - efficiency advancement of the project! As an important part of the "Yi - Yong - Zhou" open grand channel, the second phase of the Liuheng Highway Bridge project is an important project for the implementation of the "the Belt and Road" initiative and the "Yangtze River Economic Belt" strategy. After completion, the project will further improve the road network structure of Zhejiang, open up the land - sea channel between the core islands in the southern wing of Ningbo and Zhoushan, further promote the development of the Ningbo - Zhoushan Port area and the port - based industrial base, and is of great significance for promoting the implementation of the national marine economic development strategy and the construction of national new areas.
Li Zehong, Zhang Xichao
