CN202599765U - Testing device for steel member high-temperature local stability - Google Patents

Abstract

High-temperature local stability test device for steel components, including a reaction beam fixed on the ground by fasteners, a loading beam, an electric furnace and two tension and compression jacks, and a tension and compression jack is fixed on the left and right ends of the upper surface of the reaction beam , the electric furnace is installed on the upper surface of the reaction beam, bolt rods are fixed on the jack rods of the tension and compression jack, and the two bolt rods pass through the left and right ends of the loading beam respectively, and the lower surface of the loading beam is placed On the top surface of the component, two pressure sensors pass through the bolt rod and are located on the upper surface of the loading beam. A gasket is arranged on the pressure sensor, and a bolt fixed on the bolt rod is arranged on each gasket. The utility model provides a test device with good performance for the local stability performance test of steel components at high temperature, which meets the test requirements of temperature rise, constant temperature, boundary constraint, load measurement and loading, etc., and truly simulates the high temperature environment of fire , so that the local stability performance test of the specimen at high temperature can be successfully completed.

Description

High temperature local stability test device for steel components

technical field

The utility model relates to a fire resistance test device.

Background technique

The occurrence of fire has brought great harm to the safety of human life and property. It is a common disaster faced by human beings. It can ruthlessly take the precious lives of many people and turn the wealth accumulated by human beings into ashes in an instant. Fires are mainly divided into various types such as building fires, forest fires, industrial and mining fires, traffic fires, etc. Among them, building fires are the most direct and serious harm to human beings, because buildings are places where human beings rely for survival and development. The safety of people and property inside is one of the most important issues that building and structure designers should consider. Steel beams and columns are the main load-bearing elements of a building and are easily damaged in a fire. The main forms of its failure are strength failure, overall stability failure and local stability failure. In order to take better fire protection measures to protect steel components, so as to ensure the safety of human life and property, it is necessary to study various damage forms of steel components in depth, and to understand the local stability of steel components under fire and high temperature. At present, domestic tests on the fire resistance of building components are limited to the study of the overall stable bearing capacity of basic stressed components and constrained components, and there is no test for the local stability of steel components at high temperatures.

Utility model content

The purpose of this utility model is to provide a high-temperature local stability test device for steel components, which can test the local stability of steel components at high temperatures.

The purpose of this utility model is achieved through such a technical scheme, which includes a reaction beam fixed on the ground by fasteners, a loading beam, an electric furnace and two tension and compression jacks, and the left and right ends of the upper surface of the reaction beam Each is fixed with a tension and compression jack. The electric furnace is installed on the upper surface of the reaction beam, and a bolt rod is fixed on the jack rod of the tension and compression jack. The two bolt rods pass through the left and right ends of the loading beam respectively, and the lower surface of the loading beam is placed On the top surface of the test piece loaded in the electric furnace, two pressure sensors pass through the bolt rods and are located on the upper surface of the loading beam. A gasket is arranged on the pressure sensor, and a gasket is fixed on each gasket. Bolt on bolt shank.

Further, the upper surface of the reaction beam is provided with a mounting boss, and the electric furnace is fixed on the mounting boss.

Further, the lower surface of the loading beam is provided with a fixed boss, and the lower surface of the fixed boss is placed on the top surface of the test piece.

Further, heat insulation boards are arranged between the test piece and the reaction beam and between the test piece and the loading beam.

Further, the heat insulation board is an aluminum silicate fiber board.

Further, the fastener includes a screw and a bolt, the screw passes through the reaction beam, and the bolt is fixed on the upper surface of the reaction beam through the screw.

Further, the side wall of the electric furnace is provided with an observation hole.

Owing to adopting above-mentioned technical scheme, the utility model has following advantage:

The utility model provides a test device with good performance for the local stability performance test of steel components at high temperature, which meets the test requirements of temperature rise, constant temperature, boundary constraint, load measurement and loading, etc., and truly simulates the high temperature of a fire. environment, so that the local stability performance test of the specimen at high temperature can be successfully completed, thus laying a good foundation for studying the local stability performance of building steel components at high temperature and guiding the fire resistance design of steel components.

Other advantages, objectives and features of the present utility model will be set forth in the following description to some extent, and to some extent, based on the investigation and research below, it will be obvious to those skilled in the art, or can be Get teaching from the practice of the utility model. The objectives and other advantages of the utility model can be realized and obtained by the following description and claims.

Description of drawings

The accompanying drawings of the utility model are as follows.

Fig. 1 is the structural representation of the utility model.

In the figure: 1. Reaction beam; 2. Loading beam; 3. Electric furnace; 4. Tension and compression jack; 5. Bolt rod; 6. Pressure sensor; 7. Gasket; 8. Bolt; . Test piece; 11. Mounting boss; 12. Fixed boss; 13. Observation hole; 14. Fasteners.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

The high-temperature local stability test device for steel components includes a reaction beam 1 fixed on the ground by fasteners 14, a loading beam 2, an electric furnace 3 and two tension and compression jacks 4, and the left and right ends of the upper surface of the reaction beam 1 are respectively A tension and compression jack 4 is fixed, and the electric furnace 3 is installed on the upper surface of the reaction beam 1. A bolt rod 5 is fixed on the ejector rod of the tension and compression jack 4, and two bolt rods 5 pass through the left and right ends of the loading beam 2 respectively. The lower surface of the loading beam 2 is placed on the top surface of the test piece 10 loaded in the electric furnace 3, and the two pressure sensors 6 pass through the bolt rods 5 and are located on the upper surface of the loading beam 2 respectively, and each of the pressure sensors 6 is provided with a Spacers 7, each spacer 7 is provided with a bolt 8 fixed on the bolt rod 5.

When working, fix the reaction beam 1 on the ground with grooves, put the tension and compression jack 4 in place, arrange the heat shield 9, install the test piece 10 on the reaction beam 1, and put the heat shield 9 on the top of the test piece 10 , hoist the loading beam 2 and use bolts to connect the loading beam 2 to the top of the test piece 10, place the pressure sensor 6, place the gasket 7, fasten the bolt 8, and place the electric furnace 3 around the test piece 10. When working, first preset a target temperature value, start the power switch of the electric furnace 3, keep the temperature at a constant temperature for 30 minutes after the temperature reaches the predetermined value, read the temperature distribution of the test piece through the thermocouple arranged on the test piece 10, and wait until the temperature distribution is uniform. , start the tension and compression jack 4, observe the measurement results of the displacement meter after applying the load, stop loading after the specimen reaches buckling, and turn off the power supply of the electric furnace 3. The furnace temperature, pressure sensor and displacement measurement data are collected by computer.

The utility model provides a test device with good performance for the local stability performance test of steel components at high temperature, which meets the test requirements of temperature rise, constant temperature, boundary constraint, load measurement and loading, etc., and truly simulates the high temperature of a fire. environment, so that the local stability performance test of the specimen at high temperature can be successfully completed, thus laying a good foundation for studying the local stability performance of building steel components at high temperature and guiding the fire resistance design of steel components.

The upper surface of the reaction beam 1 is provided with a mounting boss 11 , and the electric furnace 3 is fixed on the mounting boss 11 .

The lower surface of the loading beam 2 is provided with a fixed boss 12 , and the lower surface of the fixed boss 12 is placed on the top surface of the test piece 10 .

In order to prolong the service life of the utility model and prevent the reaction beam 1 and the loading beam 2 from being damaged by high temperature, a heat shield 9 is arranged between the test piece 10 and the reaction beam 1 and between the test piece 10 and the loading beam 2 .

The heat insulation board 9 is an aluminum silicate fiber board.

The fastener 14 includes a screw and a bolt, the screw passes through the reaction beam 1 , and the bolt is fixed on the upper surface of the reaction beam 1 through the screw.

The side wall of the electric furnace 3 is provided with an observation hole 13 . Workers can see the deformation state of the test piece 10 at high temperature through the observation hole 13 .

Finally, it is noted that the above embodiments are only used to illustrate the technical solutions of the present utility model without limitation. Although the utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the utility model can be Modifications or equivalent replacements of the technical solutions without departing from the spirit and scope of the technical solutions shall be covered by the claims of the present utility model.

Claims (7)

1. The high-temperature local stability test device for steel components is characterized in that: it includes a reaction beam fixed on the ground by fasteners, a loading beam, an electric furnace and two tension and compression jacks. A tension and compression jack is fixed, and the electric furnace is installed on the upper surface of the reaction beam. Bolt rods are fixed on the top rod of the tension and compression jack. The two bolt rods pass through the left and right ends of the loading beam respectively, and the lower surface of the loading beam is placed on the Loaded on the top surface of the test piece in the electric furnace, two pressure sensors pass through the bolt rods and are located on the upper surface of the loading beam. A gasket is arranged on the pressure sensor, and a gasket is fixed on each gasket. Bolt on rod. 2. The high-temperature local stability test device for steel members according to claim 1, characterized in that: the upper surface of the reaction beam is provided with a mounting boss, and the electric furnace is fixed on the mounting boss. 3. The high-temperature local stability test device for steel members according to claim 2, characterized in that: the lower surface of the loading beam is provided with a fixed boss, and the lower surface of the fixed boss is placed on the top surface of the test piece. 4. The high-temperature local stability test device for steel members as claimed in claim 1, characterized in that: heat shields are arranged between the test piece and the reaction beam and between the test piece and the loading beam. 5. The high-temperature local stability test device for steel members as claimed in claim 4, characterized in that: the heat insulation board is an aluminum silicate fiber board. 6. The high-temperature local stability test device for steel members according to claim 1, wherein the fastener includes a screw and a bolt, the screw passes through the reaction beam, and the bolt is fixed on the upper surface of the reaction beam through the screw. 7. The high-temperature local stability test device for steel components as claimed in claim 1, characterized in that: the side wall of the electric furnace is provided with an observation hole.

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