Large-span Steel Structures Research Articles

Modal Analysis and Testing of Large-Span Space Steel Structure

Large-span space steel structure, rotary hearth furnace lower ring, has dynamic stress at work caused by shock or vibration leading to the destruction of steel, so in the design of rotary hearth furnace lower ring, dynamic design is an essential part [1, 2]. Finite element analysis software ANSYS is used to build its finite element model. Modal analysis is carried on, and experimental data is compared with the calculation result, which effectively estimates the vibration characteristics and structural optimization design of the structure, and provides strong technical support for its design and manufacture[3, 4].

Development of CAD/CAM Software System for Large Non-Regular Steel Constructions

Sun-valley of Expo-axis is irregular large-span steel structure building. For the complicacy and specialty of tubular joint conformation, existing domestic and oversea professional software are incapable of solving the detailing work of this structure. Characteristics, difficulties and function requirements of the engineering are analyzed; the framework, data structure kernel and implement algorithm of important functions are designed for a specialized integrated detailing/manufacture CAD/CAM information system. This software comprises the functions from 3D solid modeling to automatic output of shop drawing and NC data, and it has been successfully applied to the actual construction work of sun-valley project.