CN211602739U

CN211602739U - Cable support node slippage testing device under high temperature

Info

Publication number: CN211602739U
Application number: CN202020141250.8U
Authority: CN
Inventors: 杜咏; 戚洪辉
Original assignee: Nanjing Tech University
Current assignee: Nanjing Tech University
Priority date: 2020-01-21
Filing date: 2020-01-21
Publication date: 2020-09-29
Anticipated expiration: 2030-01-21

Abstract

The utility model discloses a cable support node slippage testing device under high temperature, which comprises a test piece, a reaction frame device, a jack device, a cable clamp pushing arm, a press machine and a furnace device, wherein the test piece is a cable support, one end of the test piece is welded with an ear plate to be connected with the upper part of the press machine, the other end is welded with an anchor head, and the middle of the test piece is provided with a cable clamp to clamp the cable support; the jack crossbeam is arranged on the upper part of the cable support anchor head to clamp the cable support, and the jack acts between the jack crossbeam and the reverse jacking profile steel; the cable clamp pushing arm comprises a high-temperature loading head, a pushing beam and a pushing column, the pushing column is connected with the lower portion of the press through a bolt, the pushing beam is arranged on the lower portion of the high-temperature loading head and connected with the pushing column through a bolt, the high-temperature loading head extends out of the furnace into the furnace, and the high-temperature loading head is arranged on the lower portion of the cable clamp to push the cable clamp. The utility model discloses a cable props node testing arrangement that slides under the high temperature lets the cable prop when satisfying high temperature and receive the fire, takes place the node through the press and slides, has realized the supporting use of stove and press.

Description

Cable support node slippage testing device under high temperature

Technical Field

The utility model belongs to the civil engineering field relates to a testing arrangement, concretely relates to cable stay node testing arrangement that slides under high temperature.

Background

With the progress of computing technology, the improvement of cable material manufacturing technology, the increasingly mature prestress tensioning construction technology, the beautiful structural shape and the good structural performance, the tensioning structure system is more and more widely applied to the public building places with dense personnel, such as large-span, large-column-net, large-bay gymnasiums, exhibition halls, airport terminal buildings, theaters and the like. Meanwhile, as the tension structure engineering is more and more widely popularized and applied, the possibility of fire hazard is continuously increased, and the fire hazard safety faces a serious challenge.

In the current experimental research, the test instrument is limited, most tests adopt a test mode of firstly heating and then loading until a test piece is damaged, namely, firstly heating to a design temperature by using a furnace, then taking out the test piece and placing the test piece in a press machine to test the ultimate bearing capacity of the test piece. The advantage of this test mode is that the instrument is used separately and is simple to operate. However, in a practical situation, the test piece is inevitably loaded while being heated, so that the mechanical property of the test piece under a high-temperature condition cannot be well simulated in the current test mode.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the not enough of current instrument, the cable support node testing arrangement that slides under high temperature that provides, this testing arrangement have higher suitability and maneuverability, prop the cable with jack device earlier and tighten, when letting the cable prop and satisfy high temperature and receive the fire, the cable is propped through press controllable stretching of reuse cable clamp top pushing arm, realizes high temperature furnace and tensioning device's supporting use. Meanwhile, the test platform meets the requirement of rapid industrialization, can be preprocessed in a factory, is directly hoisted and spliced on a construction site, and buries a couch pen for popularization of a high-temperature loading test.

The utility model adopts the technical proposal that: a device for testing slippage of a cable support node at high temperature comprises a test piece, a reaction frame device, a jack device, a cable clamp jacking arm, a press machine and a furnace device;

the test piece is a cable support, one section of welding lug plate is connected with the upper part of the press, the other end of the welding lug plate is welded with an anchor head, and a cable clamp is arranged in the middle of the welding lug plate to clamp the cable support; the reaction frame device comprises reaction frame columns, reaction frame beams and reaction top section steel which are connected through bolts; the jack device comprises a jack and a jack crossbeam, the jack crossbeam is arranged on the upper part of the cable support anchor head to clamp the cable support, and the jack acts between the jack crossbeam and the reverse jacking profile steel; the cable clamp pushing arm comprises a high-temperature loading head, a pushing beam and a pushing column, the pushing column is connected with the lower part of the press through a bolt, the pushing beam is arranged at the lower part of the high-temperature loading head and connected with the pushing column through a bolt, the high-temperature loading head extends out of the furnace into the furnace and is arranged at the lower part of the cable clamp to push the cable clamp; the press machine is a microcomputer-controlled electro-hydraulic servo press machine; the stove device comprises a stove and a stove support, the stove support moves through a pulley, and the stove is controlled to enter and exit the test device.

Preferably, the upper end welding lug plate of the test piece is connected with the upper part of the press machine through a stud, the lower end welding anchor head is used for tensioning a jack, and the middle of the test piece is provided with a cable clamp for tensioning the press machine.

Preferably, the reaction frame columns are H-shaped steel columns, the reaction frame beams are H-shaped steel beams, and the reverse top-shaped steel is H-shaped steel.

Preferably, the jack adopts a high-temperature jack, so that the jack is prevented from being damaged at high temperature.

Preferably, the jack beam is H-shaped steel.

Preferably, the pushing beam is H-shaped steel, the pushing column is a round steel tube, and the welding connection plates at two ends are respectively connected with the pushing beam and the lower end plate of the press machine through bolts.

The utility model discloses mainly through bolted connection, satisfy the demand of quick industrialization under the condition of guaranteeing the bearing capacity. And the number of the steel beams, the sections of the steel columns and the number of the bolts are determined according to stress calculation. The cable support is hung on an upper end plate of the press machine through a bolt, the lower end anchor head is clamped on a jack cross beam, then the jack is installed to enable the cable support to be straightened, the furnace is conveyed to a test position through a furnace support, the press machine is opened when the temperature begins to rise, and a pushing arm is used for pushing the cable clamp to stretch the cable support. The utility model discloses a cable props node testing arrangement that slides under the high temperature lets the cable prop when satisfying high temperature and receive the fire, takes place the node through the press and slides, has realized the supporting use of stove and press.

Has the advantages that: the utility model discloses a cable props node testing arrangement that slides under the high temperature lets the cable prop when satisfying high temperature and receive the fire, takes place the node through on the press and slides, has realized the supporting use of stove and press.

Drawings

Fig. 1 is a schematic diagram of the cable support node slippage testing device of the utility model after assembly at high temperature;

FIG. 2 is a front view of FIG. 1;

FIG. 3 is a schematic view of a press machine of the cable support node slippage testing device of the present invention at high temperature;

FIG. 4 is a schematic view of a furnace device of the cable support node slippage testing device of the present invention at high temperature;

fig. 5 is the utility model relates to a cable clamp top pushing arm schematic diagram of cable support node slippage testing arrangement under high temperature.

Fig. 6 is the utility model relates to a cable props node slide testing arrangement reaction frame device schematic diagram under high temperature.

Fig. 7 is the utility model relates to a cable props node slide testing arrangement jack device schematic diagram under high temperature.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the following detailed description.

As shown in fig. 1 and 2: the utility model provides a cable support node testing arrangement that slides under high temperature, includes press 1, stove device 2, cable clamp top pushing arm 3, reaction frame 4, cable support test piece 5, cable clamp 6 and jack device 7 equipment and forms.

As shown in fig. 3: a press machine in a slippage testing device of a cable support node at high temperature is shown as a microcomputer control electro-hydraulic servo press machine, the distance between an upper end plate and a lower end plate of the press machine can be opened to exceed 2m, 1000 tons of pressure can be provided, and the upper end plate and the lower end plate can be connected through bolts.

As shown in fig. 4: the utility model provides a stove device in test device slides at high temperature cable stay node, the installation and the dismantlement of stove are all accomplished on the stove support, and the stove support passes through pulley system business turn over test device.

As shown in fig. 5: a high-temperature loading head 8 is used for propping and upwards pushing a cable clamp 6 on a test piece and is welded with a pushing cross beam 9, the pushing cross beam 9 is connected with a pushing column 10 through a bolt, and the other end of the pushing column 10 is connected with a lower end plate bolt of a press machine. The hole reserved in the middle of the pushing cross beam 9 enables the cable support test piece to penetrate through.

As shown in fig. 6: a reaction frame device in a cable support node slippage testing device at high temperature comprises a reaction top section steel 11, a reaction frame beam 12 and a reaction frame column 13. The counter-top profile steel 11 is used to provide counter-force for the jack. The reaction frame column 13 is connected with the ground through a bolt.

As shown in fig. 7: a jack device in a slippage testing device of a cable support node at high temperature comprises a jack 14 and a jack crossbeam 15. The jack 14 acts between the reaction section steel 11 and the jack beam 15. The jack crossbeam 15 clamps the anchor head at the lower end of the cable support test piece, so that the force of the jack is converted into the pulling force on the cable support test piece 5. The middle of the jack crossbeam 15 is provided with a hole so that the cable support test piece can pass through.

The embodiments of the present invention are described in detail with reference to the drawings, but the present invention is not limited to the described embodiments. Various changes, modifications, substitutions and alterations to these embodiments will occur to those skilled in the art and are intended to be within the scope of the present principles and the spirit of the invention.

Claims

1. A device for testing slippage of a cable support node at high temperature comprises a test piece, a reaction frame device, a jack device, a cable clamp jacking arm, a press machine and a furnace device;

2. The slippage testing device for the cable support node at the high temperature according to claim 1, wherein: the upper end of the test piece is welded with the lug plate and is connected with the upper part of the press machine through a stud, the lower end of the test piece is welded with the anchor head and is used for tensioning the jack, and the middle of the test piece is provided with a cable clamp and is used for tensioning the press machine.

3. The slippage testing device for the cable support node at the high temperature according to claim 1, wherein: the reaction frame column is an H-shaped steel column, the reaction frame beam is an H-shaped steel beam, and the reverse top section steel is H-shaped steel.

4. The slippage testing device for the cable support node at the high temperature according to claim 1, wherein: the jack adopts a high-temperature jack.

5. The slippage testing device for the cable support node at the high temperature according to claim 1, wherein: the jack beam is H-shaped steel.

6. The slippage testing device for the cable support node at the high temperature according to claim 1, wherein: the pushing cross beam is H-shaped steel, the pushing column is a circular steel tube, and the two ends of the welding connecting plates are respectively connected with the pushing cross beam and a lower end plate bolt of the press machine.