Time-Varying Mechanical Analysis of Long-Span Spatial Steel Structures Integral Lifting in Construction Basing Building Information Model

Abstract

As sustainable structures like steel structures become more widely used, so do their construction issues. Improper lifting measures of long-span spatial steel structures may delay the construction period and even cause safety accidents. These problems have hindered the realization of sustainable buildings. Few studies on long-span spatial steel structures considered time-varying mechanical characteristics during the construction process. During the construction process, it will be found that the installed structure does not meet the required accuracy, and the installed content needs to be removed and re-constructed. This will cause idle work and rework, which will result in a waste of resources and is not conducive to sustainable development. Therefore, it is necessary to study the lifting construction process of long-span spatial steel structures and form a refined construction method. Based on the lifting construction process of the maintenance hangar roof of Chengdu Tianfu International Airport, this study proposes a time-varying mechanical analysis method for synchronous and asynchronous integral lifting of long-span space steel structures basing the Building Information Model (BIM). The force on the lifting point is analyzed during the hoisting construction process when the single-point asynchronous integral lifting and the interlaced point asynchronous integral lifting are carried out. The adverse effect of the displacement difference between lifting points during asynchronous integral lifting is proved. It provides a reference for the safe construction of long-span spatial steel structure lifting and also helps to improve the sustainability of construction projects.

On the Similarity Relationship between the Structural-Steel Prototype and the 304-Stainless-Steel Dynamic Scale Model

“…In the experiment, it was taken as 50 mm. The parallel length, 𝐿 , can be calculated from the original gauge distance, 𝐿 , by Equation (2).…”

“…In addition to various advantages, large-span spatial structures also have characteristics such as a frequency density, complex vibration modes, and significant spatial effects in terms of earthquake action [1]. The seismic response of large-span spatial structures is complex, and seismic damage events are often reported [2]. The shaking table test is an important means of seismic research [3][4][5][6].…”

Study on Inverse Analysis Technique Considering Influence of Construction Procedure on Performance of Large-Span Steel Latticed Arch

“…For steel structure buildings, if the components are processed according to the design configuration and the design configuration is used as the initial configuration of the structure installation, there is a certain deviation between the structure configuration and the design configuration at the time of completion, which may lead to the architectural modeling not meeting the requirements of architectural aesthetics, and the building may not meet the requirements of architectural applicability in normal use; it may even affect the geometric configuration due to excessive deformation of the structure during construction [15]. For large complex steel structure buildings, this problem is especially prominent; in the construction process of these projects, the design often requires that the configuration of the structure in the completion state is consistent with the design configuration, which requires the configuration of the structure to be controlled during the construction process.…”