A Substructure Test Method Based on the Interaction of Soil-Structure-Energy Dissipator

Abstract

The invention discloses a substructure test method based on the interaction of soil-structure-energy-dissipating shock-absorbing devices, comprising the following steps: selecting ground motion, establishing a soil-structure analysis substructure model, obtaining mass, stiffness, and damping matrices; obtaining analysis substructures The initial acceleration vector of the structure and the relative displacement and velocity at different moments; the absolute displacement at the interface between the energy dissipation shock absorber and the structure; the interface force at the interface between the energy dissipation shock absorber and the shaking table; acceleration vector. The present invention establishes an analysis substructure model of soil-structure interaction, combined with the actual interaction test between a shaking table and an energy dissipation and shock absorbing device, and establishes a test that considers the interaction between soil-structure and energy-dissipating and shock-absorbing devices method, so that it can more truly and accurately reflect the interaction of the actual soil-structure-energy dissipation and shock-absorbing device system under earthquake action, and provide new ideas for the seismic research of building structures.

Description

technical field [0001] The invention relates to the field of anti-seismic technology of structural engineering, in particular to a substructure test method based on the interaction of soil-structure-energy dissipation shock absorbing device. Background technique [0002] The existing seismic design of building structures is mostly based on the assumption of rigid foundations, without considering the influence of soil on the superstructure. A large number of studies have shown that the dynamic characteristics of soil will affect the seismic performance of building structures. For the building structure with energy dissipation and shock absorbing devices added, under the earthquake, the dynamic action of the soil on the building structure is transmitted to the energy dissipation and shock absorbing devices in turn, and the dynamic response of the energy dissipation and shock absorbing devices reacts on the building structure , and then fed back to the soil. Therefore, the thre...

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Problems solved by technology

Specifically, the scale model of the structure is placed on a shaking table for loading tests. This test method has the following problems: first, due to the use of a large geometric scale model, it cannot truly reflect the mechanical properties of the prototype structure; second, due to The unrealistic wave reflection and scattering caused by the artificially set model boundary conditions have a great influence on the test results; thirdly, when the overall structure shaking table test is used, the adjustment of structural parameters becomes extremely difficult, that is, if you want to adjust structural parameters, it is necessary to make a lot of structural models, which will bring great resistance to the test

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