Shaking table scaled model test on a high-rise building with CFT frame and composite core wall

摘要

A high-rise building named as Fortune Plaza II Office Building is 264 m high employing the composite system consisting of a concrete-filled steel tube frame and a steel plate reinforced concrete core wall in Beijing, China. The height of the building, the lateral load-resisting structural system and the high seismic intensity level of the construction site present a great challenge to structural engineers. According to the peer review committee's recommendation, a 1/30 scaled model was tested under a series of one- and two-dimensional seismic excitations with gradually increasing acceleration amplitude. This paper, presents the process of model construction and the results of the shaking table tests. The dynamic characteristics, seismic responses and failure characteristics of the model and the prototype structure are investigated. Based on the test results, the conclusions are drawn that the prototype structure can meet the requirements of performance-based seismic design. The design of the structural system is able to ensure the life safety even when subjected to extremely strong earthquake with peak ground acceleration up to .62 g. Some corresponding measures for improving the design of this structure are also put forward.