On April 8, with the completion of the pouring of the last section of the wharf surface, the main structure of the first phase of the supporting freight wharf (water part) of the Hengsha Xinzhou Modern Agricultural Industrial Park undertaken by the Third Harbor Bureau was completed, laying a solid foundation for the smooth delivery of the wharf as scheduled.
Hengsha Xinzhou supporting freight terminal project is located in Hengsha Xinzhou Island, adjacent to the south side of the Yangtze River estuary Beigang waterway, the new wharf has a total length of 390 meters, a total of 5 3,000-ton general berths are arranged along the line, and the wharf is connected by a 740-meter-long approach bridge between the wharf and the land. As the first fully assembled wharf in the outer port area of China and the first wharf in the Beigang sea area of the Yangtze River Estuary in Shanghai, the project will sink the piles of the original wharf main body, pour and prefabricate the super-large prefabricated lower beam with a length of 30 meters and the π-shaped beam plate weighing 200 tons, and build "building blocks". The main components of the wharf are all prefabricated installation process of the lower beam, and the lower beam has 7 built-in cavities, and the 7 cavities need to be aligned with the 7 pile foundations underground at the same time during installation.
Before the construction of the wharf, the project team worked with the designers to consult the theoretical data in advance, through numerical simulation, model deduction, reference to the design drawings, combined with the on-site operation space, to maximize the addition of operation points, and divide the wharf and approach bridge into three major operation areas, with a total of 78 rows of frames, so as to control the installation accuracy. In order to overcome the difficulties in the installation of π-shaped plates of different sizes and average weights of more than 200 tons, the project department specially set up a land and water dispatching team, and used Gu Yijun, who has more than 20 years of dispatching experience, as the team leader, and successively deployed 3 hoisting ships to enter the site from both sides of the wharf to carry out pile sinking operations.
The dispatching team refers to the construction priority and the interaction between anchors and cables, sorts out the anchoring position and anchoring sequence of each ship, adjusts the position of the ship by means of daytime construction and nighttime anchoring, and maximizes the role of each construction ship through the measures of staggered peak wringing and staggered construction. During the construction process, the project team and the joint dispatch team increased the investment of manpower and material resources, monitored the weather changes in the construction area of the outer harbor in a timely manner, seized the construction window period, and carried out the construction work simultaneously with reference to the internal and external sides of the construction plan.
On April 8, the water construction was completed, 15 days ahead of the original plan, and the accuracy fully met the requirements of the precise installation of the prefabricated lower beams. The fully assembled construction scheme greatly reduces the cumbersome and complex cast-in-place process of the traditional wharf, greatly improves the construction efficiency, shortens the construction period, and significantly improves the overall quality and stability of the wharf. After the completion of the project, the annual design capacity of the berth can reach 7.86 million tons, which will further accelerate the construction of Hengsha Xinzhou Modern Agricultural Industrial Park, optimize the layout of ports along the Yangtze River Estuary, continue to strengthen ecological protection, and accelerate the development of modern ecological and smart agriculture in the Yangtze River Estuary. The construction of the fully assembled wharf not only boosts the economic development of the Yangtze River estuary region, but also provides new ideas and directions for the future construction of the outer port wharf.