News Details


10

2016

-

03

The CPT Testing for The World's Largest Open Caisson

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On March 9, 2016, significant progress was achieved in the construction of the Shanghai-Nantong Yangtze River Bridge. After rigorous calculation and animation of processes by various experts, the open caisson of No. 28 main pier of Yangtze River Bridge was finally sunk in place. The CPT data obtained by our seabed CPT system within the caisson served as a dependable theoretical foundation, crucial for confirming the precise placement of the caisson during its final descent.

On March 9, 2016, significant progress was achieved in the construction of the Shanghai-Nantong Yangtze River Bridge. After rigorous calculation and animation of processes by various experts, the open caisson of No. 28 main pier of Yangtze River Bridge was finally sunk in place. The CPT data obtained by our seabed CPT system within the caisson served as a dependable theoretical foundation, crucial for confirming the precise placement of the caisson during its final descent.

The open caisson of Pier 28 measures 86.9m in length, 58.7m in width, and stands at a height of 105m, encompassing a total area of 5,151 square meters and weighing 300,000 tons. This structure stands as the world's largest open caisson foundation for a highway-railway cable-stayed bridge at present.

The CPT test employed the PeneVector-II Seabed CPT System, an independent development by Peneson, with a maximum penetration force of 5 tons and a working depth of up to 200m, which can be effectively used for the in-situ soil test in the rivers, lakes, and seas. The completion of the CPT test marked that Peneson has developed a mature and efficient equipment for acquisition of geological data with improved accuracy of underwater soil through in-situ testing technology.

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