Powerchina Huadong Engineering Corporation Limited

Tianhao Li

Chunlin Huang

Huafeng Yu

Haifeng Qi

Xingjian Sun

Dongliang Zhang

Baofeng Zhang

Fei Wang

Qunyi Tang

Jinjun Chen

Gen Xiong

Zhenzhou Sun

Ning Liang

Xianlin Jia

Guoer Lv

Weijiang Feng

Kun Fu

Junzhong Xue

Ziteng Peng

Gangjie Yu

Zhongshuai Yuan

Shanshan Huang

Guangming Xu

Jiefeng Chen

The present invention discloses a prestressed-bolted dry-assembled segmental precast hybrid tower with grouting-free, comprising a top steel tower tube, a reverse self-balancing steal-concrete transition section, and a prestressed-bolted dry-assembled segmental precast concrete tower with grouting-free dry fast splicing and a gear reinforced wind turbine foundation; the steel tower tube, the steel-concrete transition section, the concrete tower tube and the hollow wind turbine foundation are integrally connected from top to bottom through a prestressed steel strand system to improve the overall bending resistance of the tower; the upper end of the prestressed steel strands is anchored to the steel-concrete transition section, and the lower end is anchored to the bottom face of the wind turbine foundation corbel; the concrete tower tube is composed of a number of segmental tapered precast concrete tower segments, which are grouting free spliced vertically, and the vertical splicing utilizes positioning pins to accurately position the installation position. The prefabricated concrete tower tube segment is formed by a number of circular arc-shaped prefabricated concrete pipe segments with circumferential grouting free dry splicing. The segments are spliced into a whole by prestressed bolts and then installed staggered from top to bottom to enhance the shear resistance.

Prestressed-bolted dry-assembled segmental precast hybrid tower with grouting-free

A transportation device for an offshore platform, including a vessel and a floating structure which are fixedly connected. The floating structure is placed on a sea surface and is configured to assist the vessel to sail. The floating structure is provided with an adjustment mechanism which is configured to adjust the floating structure to rise and fall relative to the sea surface. A rail is arranged on the vessel and is in sliding connection with the topside module, so that the topside module slides onto the vessel from land. During the transportation of the topside module, the buoyancy of the floating structure is adjusted through the adjustment mechanism, so that the floating structure provides sufficient anti-rolling moments beside the vessel, thereby reducing the vibration of the topside module caused by the winds and waves during the sailing and reducing the potential damage to the topside module.

Transportation device for offshore platforms and method for installing the same

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Zhejiang, China

Tianhao Li