Lifting Plan Design for Large-Scale UHPC Artistic Forms: Dual Assurance of Safety and Precision

Large UHPC artistic shapes are typically large in volume, heavy in weight, and complex in form; the scientific design of the lifting plan is the core of ensuring construction safety and installation precision. Qinglong Group, with 28 years of UHPC/GRC/GRG/GRP construction experience, draws on the practice of multiple large-scale projects to explain the key design points and implementation safeguards of lifting plans.

#Pre-Lifting Preparation: Laying a Safety Foundation Pre-lifting preparation is crucial for large UHPC artistic shapes. Qinglong Group first surveys the lifting site, assessing the site's bearing capacity, working space, and transportation routes to ensure unobstructed operation of lifting equipment and component transport; comprehensively inspects UHPC components, checking appearance quality, dimensional accuracy, and the firmness of embedded lifting points—lifting point strength must be verified by pull-out tests, with a safety factor of no less than 3; selects appropriate lifting equipment (such as truck cranes or crawler cranes) according to component weight, dimensions, and form, with the equipment's rated lifting capacity required to be greater than 1.5 times the component weight; and formulates detailed lifting plans and emergency response plans, specifying lifting procedures, personnel division of labor, safety measures, and emergency handling methods. Before lifting UHPC sculptures over 3 meters for the Shanghai Astronomy Museum, Qinglong reinforced the lifting site and selected a crawler crane with a rated lifting capacity of 50 tons to ensure lifting safety.

#Lifting Point Design and Rigging Selection: The Core of Precise Load Bearing Lifting point design and rigging selection directly affect lifting safety and component integrity. Based on the center of gravity and structural characteristics of large UHPC artistic shapes, Qinglong Group reasonably sets the number and positions of lifting points to ensure uniform load on components during lifting and avoid deformation or damage; for irregularly shaped components, multi-point lifting is adopted with no fewer than 4 lifting points; flexible slings or specialized rigging are chosen to prevent damage caused by direct friction between rigging and component surfaces, with sling width no less than 100mm to reduce localized pressure; protective pads (such as rubber pads or wooden boards) are placed where rigging contacts components to further protect component surfaces. For the oversized UHPC imitation-wood translucent panels (each weighing over 700kg) at Century Plaza, Shanghai New World on Nanjing East Road, Qinglong designed 4 symmetrical lifting points and selected wide flexible slings with protective pads, and the components showed no deformation or damage during lifting.

#Lifting Process Design: Safeguarding Precise Installation Lifting process design must balance safety and installation precision. Qinglong Group adopts a 'trial lift - hoisting - translation - positioning' lifting procedure: in the trial lift, the component is raised 10-20cm off the ground and held for 5-10 minutes to check the rigging, lifting points, and equipment operation, and formal hoisting begins only after everything is confirmed correct; during hoisting and translation, lifting speed is controlled—hoisting speed no more than 0.5m/s and translation speed no more than 1m/s—to prevent component swaying; guide ropes are used to control component orientation, ensuring smooth movement and avoiding collision with other objects; during installation positioning, 3D laser positioning technology is used to monitor component position in real time for precise adjustment, with installation error controlled within ±2mm. For the lifting of large hyperbolic UHPC exterior wall panels at the Guangxi New Media Center, precise lifting process design successfully achieved accurate positioning of the complex form.

#Lifting Process Control and Safety Assurance: Controllable Throughout Full-process control of lifting operations is the guarantee of safety and precision. Qinglong Group forms professional lifting teams; all personnel undergo rigorous training and assessment and are certified for their roles; dedicated personnel direct the lifting process, using standardized hand signals or walkie-talkie communication to ensure clear and accurate instructions; safety警戒 zones are set up to keep unrelated personnel out of the work site; weather conditions are monitored in real time, and lifting operations are stopped immediately in adverse weather such as strong wind (wind force above level 6), heavy rain, or lightning; after lifting is completed, components are temporarily secured before subsequent connection and anchoring work. For the lifting of large UHPC curtain walls at the Shenzhen Pingshan High-tech Zone Comprehensive Service Center, full-process control achieved the goal of zero safety accidents and zero component damage.

The lifting plan design for large UHPC artistic shapes requires comprehensive consideration of site conditions, component characteristics, equipment selection, lifting point design, and process procedures. With 28 years of construction experience and a professional technical team, Qinglong Group develops scientific and sound lifting plans to ensure safe, precise, and efficient lifting operations. Only by choosing an experienced UHPC manufacturer can you obtain a reliable lifting solution for large shapes and ensure smooth project progress.