On December 15, Jiangsu Dajin Heavy Industry Co., Ltd. held the delivery ceremony for the world's first stone column construction platform, the "Hanggong Ping 2." The platform is the world's first self-elevating offshore construction platform specifically designed for stone column construction. It was contracted and independently designed by Shanghai Bestway Marine Engineering Design Co., Ltd., and jointly built by Jiangsu Dajin Heavy Industry Co., Ltd., a subsidiary of the Bestway Group, for CCCC Second Harbor Engineering Co., Ltd.

The platform was tailor-made for the Ashdod Port project in Israel and is also the first major engineering equipment of CCCC Second Harbor Engineering Co., Ltd. for an overseas developed country. The platform is a steel welded non-self-propelled engineering platform, with an overall length of 83.80 m, hull length of 42 m, molded breadth of 50.00 m, molded depth of 5.50 m, design draft of 3.60 m, variable load of 1,500 T, leg length of 55.00 m, normal lifting capacity of 1,500 T/LEG, normal lifting speed of 10 m/h, and maximum operating water depth of 25 m.

The hull of the platform is a box-type "回"-shaped structure, with four hydraulically driven legs arranged at the four corners, each with a spudcan at the bottom. A gantry is arranged on the upper part of the platform along the molded breadth direction, covering the moonpool and the outboard areas on both sides. Each trolley is equipped with a main hoisting trolley and an auxiliary hoisting trolley, among which the main hoisting trolley lifts the vibroflot for stone column construction. The platform serves as a carrier for stone column construction equipment. When in water, it relies on the hull to provide buoyancy; when standing, it uses the legs and the lifting mechanism to raise the hull. The platform is equipped with stone column construction equipment and a feeding system, as well as an engine room, ballast tanks, lifting mechanism, and control system, among others.

It is reported that the platform is a combination of shore-based stone column construction equipment and an offshore platform, and from the perspective of engineering and equipment technology, it is a global first. The platform cost 84.57 million yuan and construction began on April 20 this year. From November 28 to December 3, the platform successfully completed its lifting test. The platform meets the construction requirements of harsh sea conditions and will greatly enhance the company's construction capability in sea areas with medium- and long-period waves and its comprehensive offshore construction strength.