CN110631895A - High-temperature loading system for full-scale horizontal component - Google Patents
High-temperature loading system for full-scale horizontal component Download PDFInfo
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- CN110631895A CN110631895A CN201911035882.4A CN201911035882A CN110631895A CN 110631895 A CN110631895 A CN 110631895A CN 201911035882 A CN201911035882 A CN 201911035882A CN 110631895 A CN110631895 A CN 110631895A
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 42
- 239000010959 steel Substances 0.000 claims abstract description 42
- 238000006243 chemical reaction Methods 0.000 claims abstract description 37
- 239000000725 suspension Substances 0.000 claims abstract description 12
- 238000012360 testing method Methods 0.000 claims description 30
- 238000003466 welding Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/18—Performing tests at high or low temperatures
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Abstract
The invention discloses a high-temperature loading system for a full-scale horizontal member, which comprises a reaction frame, a frame beam, a loading device, a conversion cross beam, a jack and a suspension device, wherein a reaction frame column is connected with the frame beam through a bolt; the counterforce frame beam is connected with the frame beam through a suspension device; the suspension device comprises channel steel, angle steel and a turn buckle; the conversion cross beam is connected with the counterforce frame beam through a bolt; the loading device is placed on the horizontal member and acts with the conversion cross beam through a jack; the loading device is a steel beam combination, and the steel beams are hinged in a contact mode through a limiting plate so as to ensure that the loading device can freely rotate along with the deformation of the horizontal component. According to the invention, through the full-scale horizontal component high-temperature loading system, the horizontal component meets the requirement of high-temperature fire, and meanwhile, the horizontal component is loaded on the furnace which cannot bear load through the frame beam, and the furnace is loaded in a uniformly-distributed loading manner, so that the furnace and the loading device are matched for use.
Description
Technical Field
The invention belongs to the field of civil engineering, relates to a loading system, and particularly relates to a high-temperature loading system for a full-scale horizontal member.
Background
Generally, under the action of high temperature in a fire, the mechanical properties of a structural material are attenuated to a certain extent, so that the bearing capacity of the structure and a member at high temperature is reduced, and finally, the structure is damaged to a certain extent and even collapses. In 2001, 9 and 11 days, the American world trade building has serious fire after being collided by an airplane, the main structure collapses under the high temperature of the fire, and finally about 2998 people die, and similar serious building fire cases often happen. Therefore, the high-temperature loading test of the test piece has great significance for structural design.
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.
Disclosure of Invention
The invention aims to overcome the defects of the existing instrument, and provides a full-scale horizontal component high-temperature loading system which has high applicability and operability, so that the full-scale horizontal component can meet the requirement of high-temperature fire, and meanwhile, a furnace which cannot bear load is loaded through a frame beam, and the loading is carried out in an evenly-distributed loading manner, so that the matched use of the high-temperature furnace and a loading device is realized. 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 technical scheme adopted by the invention is as follows: a high-temperature loading system for a full-scale horizontal component comprises a reaction frame, a frame beam, a loading device, a conversion cross beam, a jack and a suspension device;
the reaction frame comprises reaction frame columns and reaction frame beams, the reaction frame columns are connected with the reaction frame beams through bolts, the reaction frame columns are connected with the frame beams through bolts, and the reaction frame beams are connected with the frame beams through suspension devices; the suspension device comprises a vertical channel steel, a horizontal channel steel, an angle steel and a turnbuckle, wherein the vertical channel steel is connected with the horizontal channel steel through a bolt, the angle steel is connected with the vertical channel steel through a welding seam, a hole is formed in the angle steel for turnbuckle connection, and stiffening ribs are arranged at two ends of the hole; the frame beam is perforated for fixing a test horizontal component and connecting a turnbuckle, and stiffening ribs are arranged at two ends of the holes;
the conversion cross beam is connected with the counterforce frame beam through a bolt, the lower end of the conversion cross beam acts on a loading device through a jack, the loading device is placed on a test horizontal component, and the loading device is formed by combining steel beams.
Preferably, the reaction frame columns are H-shaped steel columns, the reaction frame beams are H-shaped steel beams or lattice beams, and the frame beams are H-shaped steel beams.
Preferably, the turnbuckle is of grade M33 to meet typical loading requirements.
Preferably, the jack adopts a high-temperature jack, so that the jack is prevented from being damaged at high temperature.
Preferably, the steel beams of the loading device are hinged in a contact mode with a limiting plate, so that the loading device can rotate freely along with the deformation of the foot-sized horizontal component.
Preferably, spherical point contact is adopted between the steel beam of the loading device and the test horizontal component.
The invention meets the requirement of rapid industrialization mainly through bolt connection under the condition of ensuring 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 horizontal component is connected to the upper surface of the frame beam through bolts, a loading device is arranged, and then the furnace is closed to ignite for testing. The invention realizes the matching use of the high-temperature furnace and the loading device by loading the test piece in a uniformly distributed loading mode while meeting the requirement of high-temperature fire.
Has the advantages that: according to the invention, through the full-scale horizontal member high-temperature loading system, the test piece is loaded in a uniformly-distributed loading mode while meeting the requirement of high-temperature fire, the bearing load is not limited to the bearing capacity of a furnace, and the loading position is not limited to the position and height of a reaction frame, so that the high-temperature furnace and the loading device are matched for use.
Drawings
FIG. 1 is a schematic view of a full-scale horizontal member high temperature loading system of the present invention assembled with a furnace;
FIG. 2 is a left side view of FIG. 1;
FIG. 3 is a schematic view of a frame beam of a high temperature loading system for a full-scale horizontal member according to the present invention;
FIG. 4 is a schematic view of a loading device of a full-scale horizontal member high-temperature loading system according to the present invention;
FIG. 5 is a schematic view of a suspension device of a full-scale horizontal member high-temperature loading system according to the present invention.
Detailed Description
The invention is further described with reference to the following figures and detailed description.
As shown in fig. 1 and 2: a full-scale horizontal component high-temperature loading system is characterized in that at least two reaction frames 2 are arranged on the periphery of a furnace 1, and frame beams 3 are connected with reaction frame columns through connecting plates and bolts and are connected with the reaction frame beams through suspension devices 6. The frame beam 3 may be perforated for fixing the test horizontal member 4 and connecting the turnbuckles. The loading device 5 is placed on the test horizontal member 4, and the upper end is loaded by the jack 7. The upper end of the jack 7 acts on the conversion cross beam 8, and the conversion cross beam 8 is connected with the counterforce frame beam through a bolt.
As shown in fig. 3: a frame beam in a high-temperature loading system of a full-scale horizontal component is spliced by H-shaped steel, and an upper flange is punched for fixing a test horizontal component. Stiffening ribs need to be arranged on the frame beams, and stiffening ribs need to be additionally arranged at two ends of the flower basket bolt holes. All component dimensions were determined from experimentally designed forces.
As shown in fig. 4: a loading device in a high-temperature loading system of a full-scale horizontal component is used for simulating uniform loading of the horizontal component, namely, a whole horizontal component is divided into 12 small blocks, and load is applied to the middle of each block. When in use, the upper end of the first-stage distribution beam 9 is kept horizontal and is acted by a jack. The first-level distribution beam 9 and the second-level distribution beam 10, the second-level distribution beam 10 and the third-level distribution beam 11 are hinged in a contact mode through limiting plates, and the third-level distribution beam 11 and the fourth-level distribution beam 12, the fourth-level distribution beam 12 and the test horizontal component are in spherical point contact. The third-level distribution beam 11 is formed by welding three H-shaped steels, and the welding point is the gravity center taking 3 loading points as a triangle. When the test horizontal member is large, a plurality of loading devices may be used for loading. The loading device is sized according to the horizontal member size.
As shown in fig. 5: a suspension device in a high-temperature loading system of a full-scale horizontal component comprises a vertical channel 14, a horizontal channel 13, an angle steel 15 and a turn buckle 16. And connecting plates are welded at two ends of the horizontal channel steel 13 and are connected with the vertical channel steel 14 through bolts, so that the counter-force frame beam is convenient to use in a matched manner when moving. The two angle steels 15 are connected with the vertical channel steel 14 through welding seams, and holes are punched at two ends of each angle steel 15 and are used for connecting turn buckle bolts 16. Stiffening ribs are required to be arranged at the two ends of the hole. All component dimensions were determined from experimentally designed forces.
The embodiments of the present invention are described in detail above with reference to the drawings, but the present invention is not limited to the described embodiments. It will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in the embodiments without departing from the spirit and scope of the invention.
Claims (6)
1. A high-temperature loading system for a full-scale horizontal component comprises a reaction frame, a frame beam, a loading device, a conversion cross beam, a jack and a suspension device;
the reaction frame comprises reaction frame columns and reaction frame beams, the reaction frame columns are connected with the reaction frame beams through bolts, the reaction frame columns are connected with the frame beams through bolts, and the reaction frame beams are connected with the frame beams through suspension devices; the suspension device comprises a vertical channel steel, a horizontal channel steel, an angle steel and a turnbuckle, wherein the vertical channel steel is connected with the horizontal channel steel through a bolt, the angle steel is connected with the vertical channel steel through a welding seam, a hole is formed in the angle steel for turnbuckle connection, and stiffening ribs are arranged at two ends of the hole; the frame beam is perforated for fixing a test horizontal component and connecting a turnbuckle, and stiffening ribs are arranged at two ends of the holes;
the conversion cross beam is connected with the counterforce frame beam through a bolt, the lower end of the conversion cross beam acts on a loading device through a jack, the loading device is placed on a test horizontal component, and the loading device is formed by combining steel beams.
2. The high temperature loading system for full-scale horizontal members of claim 1, wherein: the reaction frame column is an H-shaped steel column, the reaction frame beam is an H-shaped steel beam or a lattice beam, and the frame beam is an H-shaped steel beam.
3. The high temperature loading system for full-scale horizontal members of claim 1, wherein: the turn buckle is M33 grade.
4. The high temperature loading system for full-scale horizontal members of claim 1, wherein: the jack adopts a high-temperature jack.
5. The high temperature loading system for full-scale horizontal members of claim 1, wherein: and the steel beams of the loading device are hinged in a contact manner by adopting a limiting plate.
6. The high temperature loading system for full-scale horizontal members of claim 1, wherein: and spherical point contact is adopted between the steel beam of the loading device and the test horizontal component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911035882.4A CN110631895A (en) | 2019-10-29 | 2019-10-29 | High-temperature loading system for full-scale horizontal component |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911035882.4A CN110631895A (en) | 2019-10-29 | 2019-10-29 | High-temperature loading system for full-scale horizontal component |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113267359A (en) * | 2021-05-12 | 2021-08-17 | 中国矿业大学 | High-temperature coupling environment graded water-cooling loading test beam system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100946740B1 (en) * | 2009-11-10 | 2010-04-01 | 한국건설기술연구원 | Apparatus for testing structural strength of middle and long span structures in a heating furnace |
| CN110376074A (en) * | 2019-08-07 | 2019-10-25 | 南京工业大学 | A kind of full-scale vertical member high temperature loading system |
| CN211042919U (en) * | 2019-10-29 | 2020-07-17 | 南京工业大学 | High-temperature loading system for full-scale horizontal component |
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2019
- 2019-10-29 CN CN201911035882.4A patent/CN110631895A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100946740B1 (en) * | 2009-11-10 | 2010-04-01 | 한국건설기술연구원 | Apparatus for testing structural strength of middle and long span structures in a heating furnace |
| CN110376074A (en) * | 2019-08-07 | 2019-10-25 | 南京工业大学 | A kind of full-scale vertical member high temperature loading system |
| CN211042919U (en) * | 2019-10-29 | 2020-07-17 | 南京工业大学 | High-temperature loading system for full-scale horizontal component |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113267359A (en) * | 2021-05-12 | 2021-08-17 | 中国矿业大学 | High-temperature coupling environment graded water-cooling loading test beam system |
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