Abstract
There are 268 pieces of super long steel hangers on the façade of the curtain wall project of Xi’an Silk Road International Convention and Exhibition Center. A single piece of steel hanger is 26m~44m long and 7t~34t heavy. The difference between this project and the conventional construction method of curtain wall lies in that during the installation of steel hangers, the complex deformation of the main steel structure can make it difficult to accurately install steel hangers. The construction steps are simulated with SAP2000. The simulation defines 84 construction steps. After an accurate calculation of the deformation of the main steel structure that each piece of steel hanger must adapt to, the super long steel hangers are assembled on site. The overhanging end of the metal roof is about 5m~20m from the mounting axis of steel hangers, so the conventional process of installation from up to down cannot be applied. A 180T crawler crane is utilized for overall lifting and installation on the side. This is a new construction method of curtain wall that can control the installation accuracy within 5mm, ensure the flatness of the structural façade, improve the construction and installation efficiency, and guarantee the construction safety. It can provide a technical reference for similar large-scale curtain wall projects in the future.
Highlights
Xi’an Silk Road International Convention and Exhibition Center is located at Shiyuan Block in the core area of Euro-Asia Economic Comprehensive Park of Chanba Ecological District in the northeast of Xi’an, with a total construction area of 207,112m2
The hanger of the curtain wall is a box column structure connected by pins at both ends and in the middle
84 construction steps are defined and the steel hangers for curtain wall are divided into twelve groups by their positions [5]
Summary
Xi’an Silk Road International Convention and Exhibition Center is located at Shiyuan Block in the core area of Euro-Asia Economic Comprehensive Park of Chanba Ecological District in the northeast of Xi’an, with a total construction area of 207,112m2. The hanger of the curtain wall is a box column structure connected by pins at both ends and in the middle. Two steel hangers for curtain wall are connected by the box beam and dragged by tension bars (see Figure 1.). The maximum length of hangers for the curtain wall at the four corners of the building structure is 44.0m, and the minimum length is 26.0m in the middle of the building structure [2]. There is a total of 268 pieces of hangers for the curtain wall. Yi Jiang et al.: Installation Technology of Super Long Steel Hanger for Curtain Wall of Xi’an Silk Road International
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