Method for water-impact-resistant test on building element after fire-resistant test

A technology for building components and fire resistance testing, which is applied in the direction of applying repetitive force/pulse force to test the strength of materials, which can solve problems such as lack of inspiration, and achieve the effect of meeting the needs of stable water pressure and ensuring the safety of life and property.

Active Publication Date: 2015-07-08
广州市建筑材料工业研究所有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this patent proposes a water impact test equipment, the water impact test is only for grooved pipes and does not belong to the field of fire resistance test of building components, so there is no enlightenment after applying this equipment to the fire resistance test

Method used

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  • Method for water-impact-resistant test on building element after fire-resistant test

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Experimental program
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Embodiment 1

[0033] Such as figure 1As shown, in this embodiment, a device for water impact resistance test after fire resistance test of building components includes: water tank 1, maintenance valve 2, main pipeline valve 4, water pump 5, frequency converter 3, PID controller 9, pressure sensor 6, regulator Pressure valve 7, pressure gauge 8, water gun 10. The water outlet of the water tank 1 is connected to the maintenance valve 2, the maintenance valve 2 is connected to the main pipeline valve 4 through the pipeline, the main pipeline valve 4 is connected to the water pump 5 through the pipeline, the downstream pipeline of the water pump 5 is provided with a pressure sensor 6, and the downstream pipeline of the pressure sensor 6 is set A pressure regulating valve 7, a pressure gauge 8 is set behind the pressure regulating valve 7, and the downstream of the pressure gauge 8 is connected to the water gun 10 through a pipeline; the water pump 5 is connected to the frequency converter 3, th...

Embodiment 2

[0049] Present embodiment except following feature other structures are with embodiment 1:

[0050] In this embodiment, the overall height of the water tank 1 is 10m above the water pump 5, and the volume of the water tank 1 is 10m 3 ; The upper limit of the range of the pressure sensor 6 is 1.0 MPa, and the output signal of the sensor is 4-20 mA.

[0051] After the fire resistance test is over, the building components should be quickly moved to the predetermined flushing position, and the time interval range is 1min.

[0052] In the step (2), the target pressure value is 1.0MPa.

[0053] In the step (3), the distance between the nozzle of the water gun 10 and the surface of the building component is 10m.

[0054] In the described step (3), the speed at which the water column moves on the surface of the building component is 1.0m / s, and the total time for the impact of the water column on the building component is calculated according to the size of the building component, a...

Embodiment 3

[0056] Present embodiment except following feature other structures are with embodiment 1:

[0057] In this embodiment, the overall height of the water tank 1 is 10m above the water pump 5, and the volume of the water tank 1 is 10m 3 ;

[0058] In this embodiment, the upper limit of the measuring range of the pressure sensor 6 is 1.0 MPa, and the output signal of the sensor is 4-20 mA.

[0059] After the fire resistance test is over, the building components should be quickly moved to the predetermined flushing position, and the time interval range is 5 minutes.

[0060] In the step (2), the target water pressure value is 1.0MPa.

[0061] In the step (3), the distance between the nozzle of the water gun 10 and the surface of the building component is 10m.

[0062] In the described step (3), the speed at which the water column moves on the surface of the building component is 1.0m / s, and the total time for the impact of the water column on the building component is calculated...

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Abstract

The invention discloses a method and a device for a water-impact-resistant test on a building element after a fire-resistant test. The method comprises the following steps of: impacting the surface of a high-temperature test piece after the fire-resistant test via a high-pressure water column, controlling the pressure of the water column by a controller, so as to obtain an evaluation of the water-impact-resistant performance of the test piece after the fire-resistant test according to the pressure of the high-pressure water column, the impacting time of the water column, and the states of the test piece after the test. The device comprises a water tank, a water pump, a frequency converter, a PID (proportion integration differentiation) controller, a pressure sensor and a water gun, wherein the water pump is used for pumping water in the water tank to the water gun, the pressure sensor is arranged on a downstream pipeline of the water pump, and the pressure sensor is connected with the PID controller; the PID controller is connected with the frequency converter; and the frequency converter is connected with the water pump. According to the method and the device disclosed by the invention, the water-impact-resistant performance test on the building element after the fire-resistant test is performed, so that the fire safety performance of the building element can be comprehensively evaluated, and the water-impact-resistant performance test is extremely high in theoretical research and practical application value; and moreover, a PID control technology is used for control, so that the test is accurate.

Description

technical field [0001] The invention relates to the field of fire resistance limit test research of building components, in particular to a water impact test method after the fire resistance test of building components. Background technique [0002] The fire endurance test is a test method to detect the fire resistance of building components by simulating a real fire. Building components based on this test include walls, ceilings, floors, beams, columns, fire doors, fire shutters, fire windows, Fireproof glass, steel structure fireproof coating, fireproof sealing material, smoke exhaust valve, fire damper, etc. Through the fire resistance limit test, the fire resistance performance of the tested building components can be correctly judged, so as to provide guiding data for building design and acceptance, thereby improving the fire safety of buildings. [0003] By testing the fire resistance of building components, the building components can maintain their structural functi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/36
Inventor 刘建勇杨展林玩君赵侠邬玉龙吴欣易爱华余稳松凌翩李海伦
Owner 广州市建筑材料工业研究所有限公司
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