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Device for testing stress of cushion layer of impact protection facility under different weather conditions

A technology of protective facilities and testing devices, which is applied in the direction of measuring devices, using repeated force/pulsation force to test the strength of materials, instruments, etc., can solve the problem of less cushioning performance testing devices of protective facilities cushions, and achieve the effect of simple operation

Active Publication Date: 2022-05-31
CHINA JILIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the existing experiments, there are few test devices for the cushioning performance of the cushion of protective facilities under some extreme climates.

Method used

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  • Device for testing stress of cushion layer of impact protection facility under different weather conditions
  • Device for testing stress of cushion layer of impact protection facility under different weather conditions
  • Device for testing stress of cushion layer of impact protection facility under different weather conditions

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Embodiment 1: During the experiment, the pressure sensor 11 is first fixed in the cushion simulation box 5, and the pressure sensor 11 is set every 0.05m directly below the impact point of the impact object in the cushion simulation box 5, and then the pressure sensor 11 is installed in the cushion simulation box 5. The layer simulation box 5 is filled with a 20cm soil cushion, the cushion simulation box 5 is transferred to the climate simulation box 9 through the transmission device 8, the box door 96 is closed, and the rainfall environment is simulated. When simulating the rainfall environment, the water pump 11 needs to be turned on first, the spray valve 98 and the drain valve 97 are opened, and the rainfall of 20mm / h is sprayed, and the heating device 93 is started at the same time, and the temperature is set at 40°C. After 40 minutes, the water pump 11 is turned off, and the spray Shower valve 98 and drain valve 97. After the simulation of the rainfall environment...

Embodiment 2

[0031] Example 2: To simulate the permafrost environment, first make the soil moisture content 50%, start the cooling device 93, set the temperature at -10°C, and turn it off after 2 hours, and the rest of the settings are the same as in Example 1. Detect the cushioning performance of the soil cushion of protective facilities in permafrost environment.

Embodiment 3

[0032] Embodiment 3: To simulate the freezing environment on the surface, first turn on the water pump 11, open the spray valve 98 and the drain valve 97, spray with a rainfall of 20 mm / h for 3 minutes, and then close the water pump 11, the spray valve 98 and the drain valve 97. Start the cooling device 93 again, set the temperature at -10° C., and turn it off after 30 minutes. The rest of the settings are the same as in Example 1. Detect the cushioning performance of soil cushion under the surface freezing environment.

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Abstract

The invention discloses an impact protection facility cushion stress testing device under different climate conditions, and belongs to the technical field of safety engineering detection, the impact protection facility cushion stress testing device comprises an impact simulation system, a cushion system, a climate simulation system and a measurement and control system, the impact simulation system is arranged right above the cushion system, the climate system is arranged on one side of the cushion system, and the measurement and control system is arranged on the other side of the cushion system. The cushion system is connected with the measurement and control system, and the impact simulation system comprises a lifting device, a connecting device, a supply box and a fixing device. The device is stable and reliable, is simple to operate, can test the impact force generated when the bottom of the cushion layer is impacted under different weather conditions, inspects the cushion layer buffer performance in a frozen soil environment and a rainfall environment, and provides experimental support for the design reliability of an actual protection facility cushion layer.

Description

technical field [0001] The invention relates to the technical field of safety engineering detection, in particular to a stress testing device for cushion layers of impact protection facilities under different climatic conditions. Background technique [0002] Natural disasters occur all the time on the earth on which human beings depend. my country has a vast territory, and mountainous areas account for 69.1% of the country's land area. As an important lifeline, mountainous roads are crucial to the economic development of mountainous areas. Especially in the southwestern provinces and regions, the geological structure is complex and affected by geographical conditions and the environment, especially those with heavy rainfall. Geological disasters occur frequently, accompanied by a large number of rock debris with different particle sizes. Once mountain roads are damaged or blocked when disasters occur, people's property and safety will be greatly threatened. For this reason,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/34G01N3/02
CPCG01N3/34G01N3/02G01N2203/0228G01N2203/0236
Inventor 黄冬梅李瑞孙宇鹏
Owner CHINA JILIANG UNIV
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