Side slope dynamic response experiment device and method for simulating oblique incidence effect of seismic waves

An experimental device and dynamic response technology, applied in the preparation of test samples, the use of sound waves/ultrasonic waves/infrasonic waves to analyze solids, instruments, etc., can solve the problem of oblique incident seismic wave input mode, wavelength similarity ratio is difficult to meet the requirements, vibration table Simulate problems such as high cost to achieve low cost effect

Inactive Publication Date: 2019-12-17
HEFEI UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The shaking table can effectively simulate the dynamic response of buildings (structures) under the action of earthquakes, but there are the following problems in the simulation of the dynamic response of slopes: ① Seismic waves mostly use the input method of vertical incidence, and it is difficult to realize the input method of seismic wave oblique incidence; ②According to the similarity ratio theory, in the physical simulation of slope dynamic response, the geometric similarity ratio and the wavelength similarity ratio should be equal, so as to realize the similarity between the physical laws in the model and the slope prototype
In addition, because the shaking table cannot input high-frequency seismic waves, it is difficult to meet the requirements of the wavelength similarity ratio in the simulation of high slopes, so the shaking table can only simulate low slopes, and cannot simulate the seismic dynamic response of high slopes; high

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  • Side slope dynamic response experiment device and method for simulating oblique incidence effect of seismic waves
  • Side slope dynamic response experiment device and method for simulating oblique incidence effect of seismic waves
  • Side slope dynamic response experiment device and method for simulating oblique incidence effect of seismic waves

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Experimental program
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Effect test

Embodiment 1

[0048] figure 1 It is a slope dynamic response experimental device for simulating the action of seismic wave oblique incidence, which is composed of a slope model, a wave transmitting transducer 3 , a transmitting source 4 , a wave receiving transducer 5 , a computer 7 and a wave detector 8 .

[0049]The slope model consists of slope body 1 and wedge body 2. The bottom edge of the wedge body 2 in the slope model is close to the bottom edge of the slope body 1, and the slope body and the wedge body are integrally made of the same material.

[0050] The computer 7 is connected with the wave detector through the wire 6. For convenience, the computer is a laptop.

[0051] The wave detector 8 is connected to the wave receiving transducer 5 and the transmitting source 4 through the synchronization signal source wires respectively.

[0052] The wave receiving transducer is placed on the grid wave receiving node of slope body 1 in the slope model.

[0053] The emission source is c...

Embodiment 2

[0056] This embodiment is an experiment to study the dynamic response characteristics of the slope when the seismic wave is incident from the back of the slope. The specific steps are as follows:

[0057] (1) For the measurement of a typical natural or artificial slope (hereinafter referred to as the slope) in a certain area, measure the slope top height, slope foot height, width and slope, and collect other relevant physical and mechanical parameters of the slope, Such as: density, elastic modulus, Poisson's ratio, etc., used to make a two-dimensional slope model.

[0058] (2) The material for making the slope model is barite powder, quartz sand, gypsum, glycerin and / or cement, or plexiglass; after selecting the material for making the slope model, measure the density and elastic modulus of the slope model material Quantity and Poisson's ratio to calculate the (seismic wave) wave velocity of the slope model;

[0059] (3) The thickness of the slope model is d, and d takes 1 / 1...

Embodiment 3

[0074] This embodiment is an experiment to study the dynamic response characteristics of the slope when the seismic wave is incident from the front of the slope.

[0075] In the present embodiment, when making the slope model, in order to simulate seismic waves incident from the front of the slope, the slope direction of the wedge-shaped body 2 is set to be the same as the slope direction of the slope body 1 ( Figure 4 , Figure 5 , Figure 6 ).

[0076] Figure 4 It is a slope dynamic response device that simulates the incidence of seismic waves from the front of the slope and the incident angle of seismic waves θ = 15°. The slope model is a slope model that simulates the incidence of seismic waves from the front of the slope and the incident angle of seismic waves is θ=15°. The components and specific connection methods are the same as those in Embodiment 1.

[0077] Figure 5 It is a slope model that simulates the incidence of seismic waves from the front of the slope...

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Abstract

The invention discloses a side slope dynamic response experiment device and method for simulating the oblique incidence effect of seismic waves. The side slope dynamic response experiment device comprises a side slope model, a wave transmitting transducer, a transmitting source, a wave receiving transducer, a computer and a wave detector; the slope model comprises a slope body and a wedge-shaped body; the computer is connected with the wave detector through a wire; the wave detector is respectively connected with the wave receiving transducer and the emission source; the wave receiving transducer is arranged on a grid wave receiving node of a side slope body of the side slope model; the transmitting source is connected with the wave transmitting transducer, and the wave transmitting transducer is arranged on a grid wave excitation node of the wedge-shaped body of the side slope model. According to the device and method, dynamic response of the side slope under the oblique incidence ofseismic waves can be simulated, the problem that the similarity of vibration experiments is hard to meet the requirements is solved, the cost is low, and the device and method are especially suitablefor the simulation of the dynamic response of the high side slope.

Description

technical field [0001] The invention relates to a slope dynamic response experimental device and method for simulating oblique incidence of seismic waves. Background technique [0002] Earthquakes have occurred frequently in my country in recent years, and earthquakes have induced tens of thousands of disasters such as landslides and collapses, resulting in the loss of people's lives and property. Mastering the dynamic response characteristics and failure modes of slopes under the action of seismic waves can provide a theoretical basis for slope disaster prevention and slope governance. [0003] At present, the experimental device and method for simulating the dynamic response of slopes under earthquake action is mainly the shaking table method. A vibrating table is a device that obtains mechanical vibrations using electrodynamic, electrohydraulic, piezoelectric or other principles. The principle is to input an excitation signal into a coil placed in a magnetic field to dr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/28G01N29/04
CPCG01N1/28G01N29/04G01N2291/023G01N2291/024
Inventor 熊峰王志亮卢志堂
Owner HEFEI UNIV OF TECH
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