Model box design method for simulating ground motion space differential effect and model box

A design method and model box technology, applied in the direction of design optimization/simulation, etc., can solve the problems of unavailable parameters, the simulation accuracy of the differential effect of ground motion needs to be improved, and the difficulty of reasonably simulating the spatial differential effect of earthquakes, etc., so as to improve the simulation effect , Improve design efficiency and high reliability

Pending Publication Date: 2020-05-19
TONGJI UNIV
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

Among them, the separate shear type box and the continuum model box are difficult to reasonably simulate the seismic spatial differential effect, and the segmental model box can simulate the phase change of traveling wave propagation to a certain extent, but the parameters of the model box are obtained by trial calculation. , more accurate parameters cannot be obtained, and the simulation accuracy of the differential effect of ground motion needs to be improved

Method used

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  • Model box design method for simulating ground motion space differential effect and model box
  • Model box design method for simulating ground motion space differential effect and model box
  • Model box design method for simulating ground motion space differential effect and model box

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Embodiment 1

[0029] This embodiment provides a method for designing a model box for simulating the spatial differential effect of ground motion. In this design method, the model box is designed as an elastic beam system, and the load acting on the model box is simplified to a simple harmonic traveling wave load, and the model box is established. The simplified calculation model and load boundary conditions of the model box are used to obtain the model box parameters for simulating the spatial differential effect of earthquakes by using the integral transformation and the residue theorem, and the model box is designed based on the model box parameters. The above design method can quickly, easily and accurately obtain the model box, which is conveniently applied to the simulation of the spatial differential effect of ground motion.

[0030] This model box design method puts forward reasonable simplifications according to the structural characteristics of the shaking table test model box, assu...

Embodiment 2

[0042] This embodiment provides a model box for simulating the spatial differential effect of earthquake motion, which is obtained based on the design method described in Embodiment 1.

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Abstract

The invention relates to a model box design method for simulating a ground motion space differential effect and a model box. The design method comprises: designing the model box as an elastic beam system; simplifying a load acting on the model box as a simple harmonic traveling wave load; establishing a simplified calculation model and a load boundary condition of the model box; obtaining model box parameters for simulating the seismic space differential effect by utilizing integral transformation and a residue theorem; and designing the model box based on the model box parameters. Compared with the prior art, the method has the advantages of simplicity, convenience, reliability and the like, and can effectively realize the simulation of the ground motion differential effect in a multi-point vibration table test.

Description

technical field [0001] The invention relates to the technical field of structural dynamic response tests under the action of earthquakes, in particular to a method for designing a model box for simulating the spatial differential effect of earthquakes and the model box. Background technique [0002] With the development of geotechnical and underground engineering, more and more large-scale underground structures under complex conditions have emerged. When an earthquake occurs, due to the complex site conditions and large structure size, there will be an obvious time interval when the seismic wave reaches each point, resulting in a motion phase difference at each point. This phenomenon is called the spatial differential effect of earthquake motion. It will Significantly amplifies the seismic response of rock and soil masses and structures. The differential effect of ground motion has a non-negligible influence on the dynamic response of long tunnels and the free field analys...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/20
Inventor 禹海涛陈希卓
Owner TONGJI UNIV
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