Innovation and Engineering Practice of Dynamic Improvement Level Protection System for Super High Rise Buildings

During the construction of super high-rise buildings, multi-process cross-operation leads to complex safety protection needs for vertical facades and high operational risks, making it difficult for traditional protective facilities to dynamically match the construction progress. Addressing the safety protection challenges of multi-process cross-operation in a 346-meter super high-rise building, this study aims to develop a comprehensive horizontal safety protection technology that can be simultaneously lifted and adapted to the needs of multi-process collaborative operations. By designing a multi-form protective system including core tube lifting protective sheds and external cantilever protective nets, and developing reusable connection nodes and synchronous lifting systems, the study achieves dynamic matching between protective facilities and construction progress, forming a comprehensive lifting horizontal safety protection technology. The research results show that the maximum stress on the rods of the climbing formwork frame is 133.66 MPa, which is less than the design strength of 215 MPa; the maximum stress ratio is 0.6, which is less than 0.8, and the stress ratio of most rods is less than 0.5; the maximum horizontal displacement in the X direction is 9.67 mm, the maximum horizontal displacement in the Y direction is 5.82 mm, and the maximum vertical displacement is 8.76 mm, all of which meet the limit requirements. The maximum bending stress value of the rods of the core tube lifting protective shed is 159.47 MPa, which is less than 235 MPa, and the maximum reaction force is 49.3 kN, meeting the specification requirements. The designed protective system lifting system can fully utilize existing climbing formwork and tower crane equipment to lift synchronously with the horizontal structure construction. This lifting safety protection technology is designed with multiple safety defense lines for special key areas, featuring sturdy structure, safety and reliability, convenient installation and removal, and easy transportation. This technology provides an important practical reference for super high-rise safety protection engineering and has positive significance for promoting technological innovation and development in the field of super high-rise construction.