Construction Challenges Plague Shenzhen-Zhongshan Bridge

Engineers are working to stabilize a 400-ton bridge tower component for the Shenzhen-Zhongshan Bridge. Current efforts aim to develop standardized modules that can be transported and precisely connected at heights of 100 meters, though this approach lacks industry precedent. This process is in the industry and relies on technological innovation to overcome the limitations of traditional manual construction methods. The project requires breaking down complex, changing three-dimensional structures into standardized modules for transport and assembly. Researcher Cheng Maolin proposed using horizontal sections to split multi-layer structures into single layers that can be unfolded into two assemblable planes. The core challenge involves ensuring the precision of the connection between steel bars is controlled within 3 millimeters. Failure to meet this precision could lead to structural components falling from heights of 200 to 300 meters during subsequent installation. The process requires specific control over how the bars intersect to maintain structural integrity. Each steel mesh panel requires at least 1,600 weld points to function effectively. The project faces a choice between traditional manual welding and implementing mechanical equipment to address these risks. These cranes have been applied to the Changtai Yangtze River Bridge, Shuangliu Yangtze River Bridge, and Yanji Yangtze River Bridge. The modular design allows for rapid adaptation across different bridge structures.