Study Of Shaking Table Tests On The Model Of Superhigh Tube Structures

With the rapid development of high-rise building, a variety of layout plan apply to civil engineering, among which the tube structures are widely applied due to their commodious room and reasonable structure loading. For those buildings that are beyond the limits of code for design of buildings, it is an effective way to study the earthquake-resistant behaviors of superhigh buildings by model shaking table test.Satisfying the elasticity-gravity similarity rule, a 1:50 scale superhigh residential building model that is made of PMMA is tested on shaking table to simulate the whole dynamical response process of a reinforced concrete structure from elasticity to destruction. This paper presents the result, analyzes the data and provides the references for both practical and theoretical purpose.The result of this test shows that this structure is similar to a vertical bending cantilever beam component. Under the earthquake, the peripheral walls have more intense response than core. This structure is asymmetrical, but has no obvious torsion. While shaking in the direction of asymmetrical axis, its response is less intense than shaking in the symmetrical direction. This structure is obviously influenced by higher vibration-mode. The week floors of earthquake resistance are the middle-upper part of the building.By consulting the calculation results of prototype structure, the test result is basically accordant with the calculation result although some differences.At last, this paper offers some suggestions and improvements for the test and the calculation.