Recently, Shenzhen Hongyeji Foundation Engineering Co., Ltd. successfully carried out vertical steel column insertion for top-down construction using the DTR2005H full-casing full-rotation drilling rig manufactured by Dun'an Heavy Industry at Vanke Shenzhen Binhai Land Building. The inserted steel column has a diameter of 1.6 meters, a length of 27 meters, and weighs 34 tons, with a verticality requirement of 1/1000. With careful planning by Hongyeji Foundation Engineering Co., Ltd. and strong support and cooperation from Xuzhou Dun'an Heavy Industry and Shenzhen Vanke, the installation was successful, setting a domestic record for the largest steel column vertically inserted in top-down construction.

Vertical steel column insertion in top-down construction in progress