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超高层建筑动态提升水平防护体系创新与工程实践

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

  • 摘要: 超高层建筑施工过程中,多工序交叉作业导致垂直立面安全防护需求复杂、作业风险高,传统防护设施难以与施工进度动态匹配。针对346 m超高层建筑多工序交叉作业的安全防护难题,本研究旨在研发一种可同步提升、适应多工序协同作业需求的水平安全防护综合技术。通过设计核心筒提升式防护棚、外悬挑防护网等多形态防护体系,研发可循环使用的连接节点与同步提升系统,实现防护设施与施工进度的动态匹配,形成提升式水平安全防护综合技术。研究结果表明,爬模架体杆件上的最大应力为133.66 MPa,小于设计强度215 MPa;最大应力比为0.6,小于0.8,绝大部分杆件的应力比小于0.5;X向水平位移的最大值为9.67 mm,Y向水平位移的最大值为5.82 mm,竖向位移的最大值为8.76 mm,满足限值要求。核心筒提升式防护棚杆件受弯强度最大弯曲应力值为159.47 MPa,小于235 MPa,反力最大值为49.3 kN,符合规范要求。所设计的防护体系提升系统可充分利用现有爬模与塔吊设备,跟随水平结构施工同步提升。该提升式安全防护综合技术针对特殊关键部位设计多道安全防线,具有结构坚固、安全可靠、安拆便捷、便于转运的特点。此项技术为超高层安全防护工程提供重要的实践参考,对推动超高层建设领域的技术创新与发展具有积极意义。

     

    Abstract: 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.

     

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