Research on Integration of Design and Construction for Spatial Special-Shaped Grid Structures

Spatial special-shaped grid structures have been widely used in long-span structural roofs due to their advantages， such as light self-weight and excellent spatial performance. However， these advantages also imposes higher demands on structural design and construction. A disconnect between the design and construction phases often results in a final build quality that fails to meet the original design intent. In order to address this issue， this paper proposes an integrated design-construction method， using the spatial special-shaped grid roof of the Central Hall at Xi’an Xianyang International Airport as a case study. In the design stage， digital tools were employed to coordinate the relationships between structure and building， as well as those between structure and construction. During the construction stage， numerical simulation was used to analyze the structural behavior. Throughout the project， requirements were considered in advance， and a unified structural model was integrated in the design and construction. This method aims to break the situation of design and construction “working separately” in the traditional mode. By integrating these processes， it ensures structural safety and quality， thereby demonstrating the value of synergy and efficiency.