Substructure hybrid testing of reinforced concrete shear wall structure using a domain overlapping technique
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An online hybrid test was carried out on a 40-story 120-m high concrete shear wall structure. The structure was divided into two substructures whereby a physical model of the bottom three stories was tested in the laboratory and the upper 37 stories were simulated numerically using ABAQUS. An overlapping domain method was employed for the bottom three stories to ensure the validity of the boundary conditions of the superstructure. Mixed control was adopted in the test. Displacement control was used to apply the horizontal displacement, while two controlled force actuators were applied to simulate the overturning moment, which is very large and cannot be ignored in the substructure hybrid test of high-rise buildings. A series of tests with earthquake sources of sequentially increasing intensities were carried out. The test results indicate that the proposed hybrid test method is a solution to reproduce the seismic response of high-rise concrete shear wall buildings. The seismic performance of the tested precast high-rise building satisfies the requirements of the Chinese seismic design code.
Keywordshybrid test substructure technique domain overlapping method precast concrete building
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The financial supports from the state key research project in 13th Five-Year under Grant No. 2016YFC0701901, the Beijing Science and Technology Program under grant no. Z161100001216015, and the Natural Science Foundation of China under grants nos. 51422809 and 51778342 are gratefully acknowledged.
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