Shanghai to Build Largest-Scale Inland Shipping Hub
Source：CNSS
2026-05-13
Recently, the Dalue Line East Extension Waterway Regulation Project, constructed by CCCC Third Harbor Engineering Co., Ltd. and managed by Chengtou Highway and Waterway Construction Company, has successfully completed the pouring of the first large-volume concrete base slab for its shipping hub's ship lock.
Located in the Pudong New Area and Lingang Special Area of Shanghai, this project represents the largest inland shipping hub in the city. Its main construction components include a new Class III double-line ship lock, a sluice gate, a saltwater intrusion prevention pump station, traffic bridges, and navigation dikes.
The recently poured section is the north-side base slab of the inner lock head for the first-line ship lock. This task presented significant challenges due to the structure's massive dimensions, dense reinforcement, and strict temperature control requirements, involving a continuous pour of over 2,000 cubic meters of concrete. Furthermore, the complex hydrological and geological conditions of the construction area posed multiple tests for preventing thermal cracking and coordinating on-site operations.
To tackle the challenge of controlling hydration heat in mass concrete, the project team implemented a comprehensive "internal cooling and external insulation" temperature control strategy. This involved circulating water internally for cooling while covering the exterior with insulating materials for curing. By utilizing smart sensors to monitor the temperature difference between the interior and exterior in real-time, the team effectively prevented cracks from forming. Prior to the pour, the team also optimized the concrete mix ratio multiple times, scientifically arranged cooling water pipes and an intelligent temperature monitoring system, and refined the construction process of "layered pouring and inclined advancement."
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