Africa’s lifts market10/07/2020
What were the most complex lifts to be built? The answer probably comes from the Far East … and especially from Hong Kong. The Hong Kong-Zhuhai-Macau Bridge (HZMB) is known around the world for its giant-scale construction and the unprecedented difficulties throughout its construction process. It is a great work that extends over 55 km in length, it is one of the longest bridges in the world. Throughout the months, the installation team encountered and managed to overcome other difficulties such as undersupply of electrical power, work at high altitudes above seawater, confined workspace, insufficient ventilation and high temperature. The major structure of the bridge was completed in February 2018 and opened to traffic in October of the same year. Seven elevators have been installed on the bridge’s cable-supporting towers. Four are on the Qingzhou aviation route section, and three are on the Jianghai aviation route section. The elevators on the tower structure of the Jianghai section have a rated load of 400 kg, travel at 1 m/s over a rise of more than 70 m. In order to overcome the many difficulties, particular attention was paid to the problems relating to the reduced width of the shaft and the entry of personnel when designing the lift. In the end, was settled on a solution with modular components designed to be dismantled. They also arranged them in the most space-efficient ways possible in the hoistways. Dongnan and HZMB Authority designers and builders maintained communication throughout the entire planning and designing phases to determine issues regarding interfaces between bridges and elevators. We played an active role in coordinating with the designer, CCCC Highway Consultants Co., Ltd., and other bridge designers, builders and contractors. The experts assessed the elevator design and installation methods with valuable views, laying a solid foundation for subsequent project processing. The HZMB field team also consisted of experienced technicians and engineers from previous bridge installations. In addition, the company appointed a project manager with extensive project-managing experience and quality supervisors who worked together with the project manager throughout the installation process. In view of the particularities of the project, components were pilot assembled in the factory to reduce as much onsite work as possible. This also improved efficiency and accuracy in fieldwork.