Numerical simulation of complex tubular joints of Beijing New Airport Terminal C type column

Abstract

The numerical simulation analysis of the two groups of fullscale complex tubular joints of the Beijing New Airport Terminal C type steel column under space static loading tests has been conducted by adopting software ABAQUS. The results obtained from the numerical simulation analysis consistent with those from the tests which enriched the research findings. Based on the research, mechanical performance of the joints has been carried out, the failure modes and ultimate bearing capacity of the joints with no stiffening ribs, three stiffening ribs and five stiffening ribs has been obtained. The numerical simulation results showed that, the bearing capacity of the joints without stiffening ribs were relatively low, the plastic failure of the main pipe was the major form of the destruction and the safety performance were too poor to meet the actual needs of the project. The bearing capacity of the joints significantly improved with the stiffening ribs set inside and the destruction changed to the connection of the main tubular and the branch, which means that the stress of the joints has been obviously improved by the setting of the stiffening ribs and was able to meet the needs of Beijing New Airport Terminal C type column. Through the comparative analysis of the stiffening ribs setting, it can be found that the bearing capacity of the joints were similar between the three and five stiffening ribs, considering the construction difficulty and economic benefits, three stiffening ribs has been selected as the final optimization result.

Research on Full-Element and Multi-Time-Scale Modeling Method of BIM for Lean Construction

“…For the construction difficulties of the tight construction period in the core area and the difficult construction of the C-shaped column, the construction process is simulated from different time scales, dynamically deducing the construction progress from the overall time plan of the project (taking the complex foundation pit project progress simulation as an example, as shown in Figure 10). Finely simulating the construction of local complex structures, such as the simulation of the complex steel node connection of C-shaped columns, and monitoring and simulating the effect of local bar instability on the overall load-bearing capacity of the column during the construction of the C-shaped column [40] (Figure 11).…”