Simplified design method for high-rise structure dynamic test model considering nonlinear behavior similarity

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Journal of Vibration and Shock ›› 2024, Vol. 43 ›› Issue (3) : 14-26.

WANG Rui, DONG Zhiqian, LI Gang, YU Dinghao, ZHANG Han

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Abstract

With the rapid development of physical test technology, the structural model test can accurately obtain the dynamic response of the structure under environmental load. However, in the study of model test problems such as soil-structure interaction, regional group structure, complex structure wind tunnel，pseudo-static and shaking table tests, simple, practical and accurate simplified models of model tests are still the focus of research. In the existing model simplification methods, the calibration of nonlinear mechanical parameters is complicated, and the feasibility of test is insufficient. A simplified design method of high-rise structure test model considering nonlinear behavior similarity is proposed. The flexural and shear restoring force model simulating high-rise structures is decomposed into a combination of linear and nonlinear behaviors The nonlinear behavior of structure is simulated by Coulomb friction model. Because of its simple parameters, it has certain physical significance, it can be directly applied to model test. Based on the above theoretical methods, effective combination of flexural-shear model and flat-torsional friction device, and the physical model design method for the scale test and the calculation method of parameters such as stiffness, post-yield stiffness and bearing capacity are proposed, established the corresponding mechanical calculation model of "double shear and double flexural spring between layers". The test results can be used to predict the dynamic response of the structure in elastic and nonlinear stages. Taking a high-rise structure as an example, the feasibility and accuracy of the method proposed are verified by numerical simulation and shaking table test.

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high-rise structure / simplified model / nonlinear / model test / small scale model / numerical simulation

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WANG Rui, DONG Zhiqian, LI Gang, YU Dinghao, ZHANG Han. Simplified design method for high-rise structure dynamic test model considering nonlinear behavior similarity[J]. Journal of Vibration and Shock, 2024, 43(3): 14-26

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