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UHPC透光混凝土幕墙设计与施工技术研究

Study on the Design and Construction Technology of UHPC Translucent Concrete Curtain Walls

  • 摘要: 为研究UHPC透光混凝土幕墙的应用效果,以岭南中医药博物馆主馆项目为依托,采用有限元分析软件对幕墙面板、龙骨在恒载、风载和地震荷载共同作用下的受力进行复核,根据节点荷载计算结果,分别对机械锚栓和混凝土椎体进行抗拉、抗剪和拉剪复合受力验算,同时对施工中的重难点进行论证分析。结果表明:设计的UHPC透光混凝土面板,30 mm面板变形和应力最大,分别为0.585 mm和6.8 N/mm2,小于5 mm和7.45 N/mm2的限值要求;计算的龙骨最大挠度为14.1 mm,小于限值21.6 mm;机械锚栓受拉承载力为11 kN,混凝土椎体破坏受拉承载力为29.4 kN,拉剪复合受力下埋件及混凝土的破坏承载力均满足规范要求;通过汽车吊与高空车配合,作业人员借助手动葫芦进行微调以满足UHPC透光混凝土幕墙的安装要求。该研究成果可为UHPC透光混凝土幕墙推广使用提供参考。

     

    Abstract: To investigate the application effects of UHPC translucent concrete curtain walls, this study focuses on the main hall project of Lingnan Museum of Traditional Chinese Medicine. Finite element analysis software was employed to verify the mechanical performance of curtain wall panels and supporting frameworks under combined loads including dead load, wind load, and seismic action. Based on calculated nodal loads, comprehensive verifications were conducted for mechanical anchors and concrete cones regarding their tensile resistance, shear resistance, and combined tensile-shear performance. Critical challenges in construction were systematically analyzed. Results demonstrate that: The designed 30 mm-thick UHPC translucent concrete panels exhibited maximum deformation and stress of 0.585 mm and 6.8 N/mm2 respectively, both below specified limits of 5 mm and 7.45 N/mm2. The maximum deflection of supporting frameworks reached 14.1 mm, within the permissible 21.6 mm threshold. Mechanical anchors demonstrated a tensile capacity of 11 kN while concrete cone failure showed tensile resistance of 29.4 kN. Both embedded components and concrete exhibited satisfactory failure capacities under combined tensile-shear loading that complied with code requirements. Through the coordination of a car crane and a high-altitude vehicle, operators use manual hoists to make fine adjustments to meet the installation requirements of UHPC transparent concrete curtain walls. This research result can provide reference for the promotion and use of UHPC transparent concrete curtain walls.

     

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