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Method for detecting horizontal equivalent stiffness of rubber shock insulation support

A technology of rubber shock-isolation bearing and equivalent stiffness, which is applied in the field of effective stiffness, to achieve the effect of simplification of test equipment and simple test method

Inactive Publication Date: 2005-03-16
GUANGZHOU UNIVERSITY
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Problems solved by technology

[0003] In order to overcome the difficulty of performing a force test in the shear direction in the detection of the horizontal equivalent stiffness of the existing rubber shock-isolation bearing, the present invention provides a detection method for the horizontal equivalent stiffness of the rubber shock-isolation bearing, which does not require The force test in the shear direction can detect the horizontal equivalent stiffness of the rubber isolation bearing

Method used

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  • Method for detecting horizontal equivalent stiffness of rubber shock insulation support

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Embodiment Construction

[0011] exist figure 1 In the experiment, the test body 1 of the rubber seismic isolation bearing under test is placed in the loading device 2, and a vertical pressure is applied to the rubber seismic isolation bearing. When the compressive stress reaches the set value, continue to apply pressure to the maximum vertical compressive stress. Then it is unloaded to the vertical compressive stress, and the corresponding deformation difference between the maximum load point and the minimum load point is measured.

[0012] Repeated loading and unloading tests, take the ratio of the force difference between the maximum load point and the minimum load point and the corresponding deformation difference between the maximum load point and the minimum load point as the vertical stiffness of the rubber isolation bearing, according to the measured vertical stiffness value and then calculate the horizontal stiffness value of the tested test body.

[0013] For example, to test the horizontal ...

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Abstract

This invention relates to a method to measure the horizontal equivalent stiffness of the rubber shock insulation holder, which is to locate the rubber shock insulation holder in the load device and exert vertical pressure on the rubber insulation holder. When the pressure amounts to certain designed value, it repeats the load and unload experiences based on the designed value and get the stress difference value Sigma1-Sigma2 between maximum load and minimum load and get the relevant deformation differential value Delta1-Delta2 of maximum load and minimum load and get the horizontal equivalent stiffness of the rubber insulation holder according toe the formula Kh=(Sigma1-Sigma2)A / (Delta1-Delta2) / Phi / S1.

Description

technical field [0001] The invention relates to a method for detecting the horizontal equivalent stiffness of rubber shock-isolation bearings, especially a method capable of detecting the horizontal equivalent stiffness of natural rubber vibration-isolation bearings, high-damping rubber vibration-isolation bearings, and lead-core rubber vibration-isolation bearings method. Background technique [0002] At present, the existing detection method for the horizontal equivalent stiffness of the rubber isolator is to first apply a vertical pressure to the test body of the rubber isolator, and then apply a horizontal force to the test body after reaching the set vertical pressure, so that the test body Reciprocate within the set horizontal displacement range to measure the horizontal equivalent stiffness characteristics of the test body. This method is suitable for testing the horizontal equivalent stiffness characteristics of natural rubber isolation bearings, high damping rubber...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/32G01N3/42
Inventor 刘文光周福霖杨巧荣庄学真魏陆顺林佳
Owner GUANGZHOU UNIVERSITY
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