Hangzhou Bay Sea-Crossing Bridge

In Hangzhou Bay, one of the world's three strongest tidal bays, the "Erhang Changqing" – the world's largest piling vessel built by Shanghai Zhenhua Heavy Industries Co., Ltd. (ZPMC) – successfully and precisely lowered a giant steel pipe pile, measuring 103.5 meters in length, 1.8 meters in diameter, and weighing 99.6 tons, into the predetermined seabed. This operation marked the completion of the final steel pipe pile for Pier 134 of the approach bridge for the Hangzhou Bay Sea-Crossing Railway Bridge, part of the Nantong-Suzhou-Jiaxing-Ningbo High-Speed Railway.

The approach bridge utilizes a composite foundation structure combining steel pipe piles and bored piles. The steel pipe pile foundation itself can be described as a "forest of steel giants." A single pier consists of 13 steel pipe piles with diameters ranging from 1.8 to 2.2 meters. Designed with lengths between 94 and 110.5 meters, and a maximum single pile weight of 172.3 tons, these piles set new world records for a sea-crossing railway bridge in multiple indicators, including pile diameter, length, and weight.

The MC-70 impact hammer was employed in this project, perfectly accomplishing the pile driving work.

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