CN210322864U - Double-steel-plate-concrete combined shear wall single-side fire test device - Google Patents
Double-steel-plate-concrete combined shear wall single-side fire test device Download PDFInfo
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- CN210322864U CN210322864U CN201921196979.9U CN201921196979U CN210322864U CN 210322864 U CN210322864 U CN 210322864U CN 201921196979 U CN201921196979 U CN 201921196979U CN 210322864 U CN210322864 U CN 210322864U
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Abstract
The utility model relates to a two steel sheet-concrete combination shear wall single face test device that receives fire, including horizontal test stove device, loading device, temperature measuring device, displacement collection system, control system and data acquisition system. The loading device comprises a horizontal reaction frame, a distribution beam, a loading beam, a jack and a bearing rigid frame. The reaction frame consists of longitudinal steel beams, transverse steel beams and haunched beams. The jack is arranged between the transverse steel beam and the distribution beam, and loads are applied to the double-steel-plate-concrete combined shear wall through the loading beam. The horizontal test furnace device comprises a furnace body, a combustor, a natural gas pipeline, a fan, a high-temperature camera and the like. The data acquisition system is used for acquiring the temperature, the air pressure and the displacement of each measuring point. The control system is used for controlling the jack, the burner and the fan. The utility model is suitable for a full-scale two steel sheet-concrete combination shear wall single face is fired the experiment, provides the foundation for the fire-resistant design of this type of structure through the experiment.
Description
Technical Field
The utility model belongs to the technical field of the fire-resistant performance test of structure and detection, concretely relates to two steel sheet-concrete composite shear wall single face test device that receives fire.
Background
The double-steel-plate-concrete combined shear wall combines the advantages of a steel plate wall and a concrete wall, improves the seismic performance of the shear wall, and simultaneously increases the bearing capacity and rigidity of the structure, thereby having wide application prospect in multi-high buildings. However, such buildings are often dense and concentrated in property, and once a fire occurs, the buildings are easy to damage or even collapse, and thus, serious casualties and economic losses can be caused. Therefore, the research on the fire resistance of the double-steel-plate concrete combined shear wall is very important.
The fire resistance test is the main basis for evaluating the fire resistance grade of building components, namely, the fire resistance of components such as columns, beams, walls and panels is detected under the requirements of specified loading conditions, fire working conditions and the like, and whether the bearing capacity, integrity, heat insulation and the like meet the requirements within a specified time is determined. The research on the fire resistance of the existing structure and the improvement of the fire endurance of the building structure and the member through reasonable design are the hot spots and difficulties of the current research in the fire resistance field of the building structure.
The double steel plate-concrete combined shear wall belongs to a load-bearing vertical partition member, when a fire disaster occurs, the fire disaster is prevented from spreading among fire-proof subareas, and enough bearing capacity is kept, so that a single-side fire test under a load-bearing condition is carried out on the double steel plate-concrete combined shear wall to check the bearing capacity and the heat insulation performance of the double steel plate-concrete combined shear wall. At present, the fire resistance performance of the steel plate composite shear wall is researched less at home and abroad, most of fire tests of the existing steel plate composite shear wall are small-sized model tests, and the fire resistance performance of an actual structure cannot be accurately reflected, so that a set of proper test device is researched and developed to carry out a full-scale fire resistance performance test of the double-steel-concrete composite shear wall, and the method has important significance for research, popularization and application of the double-steel-concrete composite shear wall.
Disclosure of Invention
In order to solve the problem, the utility model discloses a two steel sheet-concrete combination shear wall single face test device that receives fire through the fire test of full scale model, detects the fire endurance of wall body and research its atress performance under the conflagration, instructs the fire resistance design of two steel sheet-concrete combination shear wall according to test data.
In order to achieve the above purpose, the technical scheme of the utility model is as follows:
a single-side fire test device for a double-steel-plate-concrete combined shear wall comprises a horizontal test furnace device, a loading device, a temperature measuring device, a displacement collecting device, a control system and a data collecting system;
the horizontal test furnace device comprises a furnace body, a combustor, a fan, a flue, a natural gas pipeline, an air pipe, a furnace pressure meter and a high-temperature camera; the furnace body is surrounded by two first furnace walls and two second furnace walls, a furnace cover is covered on the furnace body, and the furnace walls and the furnace cover are composed of outer steel plates and inner ceramic fiber cotton; the burners are arranged on the two first furnace walls and are simultaneously connected with a natural gas pipeline and an air pipe, and the air pipe is connected with a fan; the flue is arranged at the bottom of the hearth, is built by refractory bricks, is buried underground and leads to an outdoor chimney; the high-temperature camera is connected with a water cooling device and is arranged on the first furnace wall and the second furnace wall; the furnace pressure gauge is arranged on the first furnace wall;
the loading device comprises a horizontal reaction frame, a distribution beam, a loading beam, a jack and a bearing rigid frame; the horizontal reaction frame consists of two longitudinal steel beams, a first transverse steel beam, a second transverse steel beam and four haunched beams and is arranged above the bearing rigid frame; the two ends of the first transverse steel beam and the second transverse steel beam are connected with the longitudinal steel beam through high-strength bolts; the haunching beam is respectively connected with the longitudinal steel beam and the transverse steel beam through high-strength bolts; a dragging plate is welded on the flange of the inner side of the longitudinal steel beam, and two long round holes are formed in the dragging plate; a jack bracket is welded on the inner side flange of the first transverse steel beam;
the distribution beam is connected with the loading beam through a high-strength bolt; the loading beam is characterized in that webs at two ends of the loading beam extend outwards, bolt holes are formed in the extending parts, and the loading beam is connected to a carriage of the longitudinal steel beam through bolts;
and a force sensor is arranged in the jack and is connected with a hydraulic system. The jack is placed on the jack bracket of the first transverse steel beam;
the temperature measuring device comprises an armored K-type thermocouple for measuring the furnace temperature, a first common K-type thermocouple and a second common K-type thermocouple for measuring the temperature of the steel plate on the fire-receiving surface of the double-steel-concrete combined shear wall and the temperature of the concrete inside the double-steel-concrete combined shear wall respectively, a compression spring K-type thermocouple for measuring the temperature of the back fire surface of the double-steel-concrete combined shear wall and a non-contact infrared thermometer;
the displacement acquisition device comprises a first stay wire type displacement meter, a second stay wire type displacement meter, a first displacement meter mounting frame and a second displacement meter mounting frame; the first stay wire type displacement meter and the second stay wire type displacement meter are respectively arranged on the first displacement meter mounting frame and the second displacement meter mounting frame; the first displacement meter mounting frame and the second displacement meter mounting frame are respectively placed on the longitudinal steel beam and the ground;
the data acquisition system respectively acquires temperature, furnace pressure, displacement and force data through thermocouples, furnace pressure meters, displacement meters and force sensors which are arranged at each measuring point; the control system controls the jack, the burner and the fan through the built-in element of the equipment;
preferably, the bearing rigid frame consists of a top beam, two upright columns and two ground beams, wherein two ends of the top beam are connected to the upright columns through high-strength bolts, and the upright columns are welded on the ground beams; the bearing rigid frame is as high as the furnace body and is arranged at two ends of the furnace body.
Preferably, the centers of the webs of the longitudinal steel beams, the transverse steel beams, the distributing beam and the loading beam are on the same horizontal plane, and the double-steel-plate-concrete combined shear wall is installed between the loading beam and the second transverse steel beam through high-strength bolts.
Preferably, the first displacement meter mounting frame consists of two transverse rigid frames and one longitudinal steel pipe; the transverse rigid frame consists of upright posts and cross rods, two ends of each cross rod are welded at the top ends of the upright posts, and the lower end of each upright post is welded on one square steel plate; two end points of the longitudinal steel pipe are welded in the middle of the cross rod; the second displacement meter mounting frame is composed of a square steel pipe and a short H-shaped steel, and the lower end of the square steel pipe is welded on a web plate of the short H-shaped steel.
The utility model has the advantages that:
the utility model provides a one set can carry out the two steel sheet-concrete combination shear wall single face of full size better and receive experimental test device of fire, device reasonable in design, with strong points, convenient to use, the test efficiency is high. The fire resistance limit and the mechanical response rule of the wall body can be accurately obtained through a full-scale fire test, so that the stress mechanism of the wall body under the fire can be further deeply researched, and a reliable basis is provided for the fire resistance design method of the double-steel-plate-concrete combined shear wall.
Drawings
FIG. 1 is a top view of the testing device of the present invention;
FIG. 2 is a front view of the testing device of the present invention;
FIG. 3 is a schematic view of the connection of the horizontal reaction frame, the distribution beam, the loading beam, the jack and the test piece of the present invention;
FIG. 4 is a top view of the furnace body of the present invention;
FIG. 5 is a schematic view of the connection between the load beam and the longitudinal steel beam of the present invention;
fig. 6 is a schematic sectional view taken along line a-a of fig. 4.
List of reference numerals:
1-horizontal test furnace apparatus; 11-a furnace body; 111-a first furnace wall; 112-a second furnace wall; 113-furnace cover; 12-a burner; 13-a fan; 14-flue; 15-natural gas pipeline; 16-air pipe; 17-furnace pressure gauge; 18-high temperature camera; 2-a loading device; 21-horizontal reaction frame; 211-longitudinal steel beams; 212-a first transverse steel beam; 213-a second transverse steel beam; 214-haunched beam; 215-carriage; 216-jack brackets; 22-distribution beam; 23-a load beam; 24-a jack; 241-a hydraulic system; 25-a load-bearing rigid frame; 3-a temperature measuring device; 31-sheathed K-type thermocouples; 32-compression spring type K thermocouple; 4-displacement acquisition means; 41-a first guyed displacement meter; 42-a second pull-wire displacement meter; 43-a first displacement meter mounting; 44-a second displacement meter mounting bracket; 5-a control system; 6-double steel plate-concrete combined shear wall test piece.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings and embodiments, which are to be understood as illustrative only and not limiting the scope of the invention. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
As shown in the figure, the single-side fire test device for the double-steel-plate-concrete combined shear wall of the embodiment comprises a horizontal test furnace device 1, a loading device 2, a temperature measuring device 3, a displacement collecting device 4, a data collecting system and a control system 5;
the horizontal test furnace device 1 consists of a furnace body 11, a combustor 12, a fan 13, a flue 14, a natural gas pipeline 15, an air pipe 16, a furnace pressure meter 17 and a high-temperature camera 18; the furnace body 11 is enclosed by two first furnace walls 111 and two second furnace walls 112, a furnace cover 113 is covered on the furnace body, and the first furnace walls 111, the second furnace walls 112 and the furnace cover 113 are composed of outer steel plates and inner ceramic fiber cotton, and the thickness is 400 mm; the burners 12 are arranged on the two first furnace walls 111 and are respectively connected with the natural gas pipeline 15 and the air pipe 16; the flue 14 is arranged at the bottom of the hearth, is built by refractory bricks, is buried underground and leads to an outdoor chimney; the high-temperature camera 18 is connected with a water cooling device and is arranged on the first furnace wall 111 and the second furnace wall 112; the furnace pressure gauge 17 is installed on the first furnace wall 111;
the loading device 2 comprises a horizontal reaction frame 21, a distribution beam 22, a loading beam 23, a jack 24 and a bearing rigid frame 25; the horizontal reaction frame 21 consists of two longitudinal steel beams 211, a first transverse steel beam 212, a second transverse steel beam 213 and four haunched beams 214, the sections of the two longitudinal steel beams are welded with H-shaped steel, and the steel material is Q345B; the height and the width of the cross section of the longitudinal steel beam 211 are both 600mm, the height and the width of the cross sections of the first transverse steel beam 212 and the second transverse steel beam 213 are respectively 800mm and 600mm, and the height and the width of the cross section of the haunched beam 214 are both 300 mm; the horizontal reaction frame 21 is arranged above the bearing rigid frame 25; end plates are welded at two ends of the first transverse steel beam 212 and the second transverse steel beam 213 and are connected with the longitudinal steel beam 211 through high-strength bolts; end plates are welded at two ends of the haunched beam 214 and are respectively connected with the longitudinal steel beam 211, the first transverse steel beam 212 and the second transverse steel beam 213 through high-strength bolts; a carriage 215 is welded on the flange at the inner side of the longitudinal steel beam 211, and two long round holes with the length and the width of 150mm and 32mm are formed in the carriage; a jack bracket 216 is welded on the inner side flange of the first transverse steel beam 212; stiffening ribs are welded among the upper flanges and the lower flanges at the positions where the longitudinal steel beam 211, the first transverse steel beam 212 and the second transverse steel beam 213 are stressed to enhance the local bearing capacity.
The sections of the distribution beam 22 and the loading beam 23 are also welded H-shaped steel, and the steel material is Q345B; the height and width of the section of the distribution beam 22 are both 400mm, and the height and width of the section of the loading beam 23 are both 500 mm; the distribution beam 22 is connected with the loading beam 23 through a high-strength bolt; the webs at the two ends of the loading beam 23 extend outwards, bolt holes are formed in the extending parts, and the extending parts are connected to the planker 215 of the longitudinal steel beam 211 through bolts;
the jack 24 has a force sensor built therein and is connected to a hydraulic system 241. The jack 24 is placed on the jack bracket 216 of the first transverse steel beam 212;
the temperature measuring device 3 comprises an armored K-type thermocouple 31 for measuring the furnace temperature, a first common K-type thermocouple and a second common K-type thermocouple which are respectively used for measuring the temperature of the steel plate of the fire-receiving surface of the double steel plate-concrete combined shear wall and the temperature of the internal concrete, a pressure spring type K-type thermocouple 32 for measuring the temperature of the back fire surface of the double steel plate-concrete combined shear wall and a non-contact infrared thermometer;
the displacement acquisition device 4 comprises a first stay wire type displacement meter 41, a second stay wire type displacement meter 42, a first displacement meter mounting rack 43 and a second displacement meter mounting rack 44; the first and second stay wire type displacement meters 41 and 42 are respectively mounted on the first and second displacement meter mounting brackets 43 and 44; the first displacement meter mounting bracket 43 and the second displacement meter mounting bracket 44 are respectively placed on the longitudinal steel beam 211 and the ground;
the data acquisition system respectively acquires temperature, furnace pressure, displacement and force data through thermocouples, furnace pressure meters, displacement meters and force sensors which are arranged at each measuring point; the control system 5 controls the jack 24, the combustor 12 and the fan 13 through the built-in elements of the equipment;
the bearing rigid frame 25 consists of a top beam, two upright posts and two ground beams; the top beam, the upright post and the ground beam are all welded H-shaped steel, and the steel material is Q345B; the height and width of the cross section of the top beam are respectively 500mm and 300mm, and the height and width of the cross section of the upright post and the cross section of the ground beam are both 400 mm; end plates are welded at two ends of the top beam and connected to the upright posts through high-strength bolts, and the upright posts are welded on the ground beam; the bearing rigid frame 25 is as high as the furnace body 11 and is arranged at two ends of the furnace body 11;
the centers of the webs of the longitudinal steel beam 211, the first transverse steel beam 212, the second transverse steel beam 213, the distributing beam 22 and the loading beam 23 are on the same horizontal plane, end plates are welded at two ends of the double-steel-plate-concrete combined shear wall test piece 6, and the double-steel-plate-concrete combined shear wall test piece is installed between the loading beam 23 and the second transverse steel beam 213 through high-strength bolts;
the first displacement meter mounting frame 43 is composed of two transverse rigid frames and a longitudinal steel pipe; the transverse rigid frame consists of upright posts and cross rods, wherein two ends of each cross rod are welded at the top ends of the upright posts, and the lower end of each upright post is welded on one square steel plate; two end points of the longitudinal steel pipe are welded in the middle of the cross rod; the second displacement meter mounting frame 44 is composed of a square steel pipe and a short H-shaped steel, and the lower end of the square steel pipe is welded on a web plate of the short H-shaped steel;
the method for performing the single-side fire test of the double-steel-plate-concrete combined shear wall by using the device is realized by the following steps:
firstly, purchasing a ceramic plate with the width of 35 mm and the thickness of 5mm and the length of the ceramic plate being the same as the thickness of the concrete in the double-steel-plate-concrete combined shear wall test piece 6, and drilling a small hole with the diameter of 5mm at the center of 1/4, 1/2 and 3/4 in the length direction of the ceramic plate; intercepting 3 second common K-type thermocouples with the length of 500mm and the thermocouple wire diameter of 0.8mm, enabling the first thermocouple wire of each thermocouple to penetrate through a small hole of the ceramic plate, and welding the first thermocouple wire of each thermocouple with the second thermocouple wire of the thermocouple to form a thermocouple embedded part;
secondly, manufacturing a steel structure part of a double-steel-plate-concrete combined shear wall test piece 6, forming a first round hole with the diameter of 54mm on a back fire surface steel plate of each temperature measuring point, taking the cut round steel sheet away, and forming a second round hole with the diameter of 20mm in the center of the round steel sheet; welding a short steel pipe with the diameter of 42mm, the wall thickness of 2.5mm and the length of 30mm on the inner side of the fire-receiving surface steel plate corresponding to the first round hole, wherein the short steel pipe and the first round hole are concentric; inserting a steel pipe with the diameter of 50mm, the wall thickness of 3mm and the length 50mm greater than the thickness of the double-steel-plate-concrete combined shear wall test piece 6 into the first round hole, and sleeving the steel pipe on the short steel pipe to tightly push the inner side of the steel plate of the fire-receiving surface;
thirdly, pouring concrete between the double steel plates of the double steel plate-concrete combined shear wall test piece 6, after the concrete is initially set, drawing out the steel pipe from the double steel plate-concrete combined shear wall, placing the thermocouple embedded part in the left hole, filling the hole with cement mortar with the same type as the poured concrete, after the cement mortar is initially set, placing a round steel plate in the first round hole, penetrating out a thermocouple wire from the second round hole, and welding the periphery of the round steel plate with the steel plate on the back fire surface; respectively spot-welding a first nut and a second nut on each temperature measuring point of the steel plate on the fire receiving surface and the back fire surface;
fourthly, maintaining the poured double-steel-plate-concrete combined shear wall test piece 6 in a natural environment for more than 60 days, and avoiding rain during maintenance;
fifthly, placing two bearing rigid frames 25 on the ground at two ends of the furnace body 11 respectively and parallel to the second furnace wall 112 of the furnace body 11; placing the horizontal reaction frame 21 on the bearing rigid frame 25, wherein the longitudinal steel beam 211 of the horizontal reaction frame 21 is vertical to the top beam of the bearing rigid frame 25;
sixthly, mounting the loading beam 23 on the longitudinal steel beam 211 by using bolts; fixing the distribution beam 22 on the loading beam 23 through a high-strength bolt;
seventhly, fixing a top plate and a bottom plate of the double-steel-plate-concrete combined shear wall test piece 6 on the loading beam 23 and the second transverse steel beam 213 respectively by using high-strength bolts, wherein the fire surface of the test piece faces downwards and directly faces the hearth;
eighthly, tightly wrapping the top plate, the bottom plate and the high-strength bolt of the double-steel-plate concrete combined shear wall test piece 6, the longitudinal steel beam 211, the loading beam 23 and one side, facing the hearth, of the second transverse steel beam 213 by using ceramic fiber cotton;
ninthly, drilling a plurality of small holes on a back fire surface steel plate of the double-steel-plate concrete combined shear wall test piece 6 by using an electric drill for releasing water vapor; welding first short steel bars at out-of-plane displacement measuring points on the back fire surface steel plate;
step ten, a first common K-type thermocouple wire for measuring a steel plate of a fire surface of a double-steel-plate-concrete combined shear wall test piece 6 penetrates into a ceramic pipe, one end of the thermocouple wire and a screw rod are screwed into a first nut on the steel plate of the fire surface together, and the other end of the thermocouple wire is pulled out of a hearth to be connected into a data acquisition system;
step ten, pressing the compression spring type K-shaped thermocouple 32 into a second nut on the back fire surface steel plate, and inserting the armored K-shaped thermocouple 31 into the first furnace wall; numbering all thermocouples and connecting the thermocouples into a data acquisition system;
a twelfth step of placing the jack 24 with the hydraulic system 241 attached thereto on the jack bracket 216 of the first transverse steel beam 212 and aligning the center of the plunger of the jack 24 with the center of the distributor beam 22;
step thirteen, covering the furnace cover 113 between the double steel plate-concrete combined shear wall test piece 6 and the longitudinal steel beam 211, and plugging the position with gaps by using ceramic fiber cotton;
fourteenth, placing the first displacement meter mounting frame 43 on the longitudinal steel beam 211 of the horizontal reaction frame 21, fixing the first stay wire type displacement meter 41 for measuring out-of-plane displacement on the longitudinal steel pipe of the first displacement meter mounting frame 43, connecting the stay wire of the first stay wire type displacement meter 41 to the first short steel bar through a high temperature resistant steel wire, and accessing the signal wire of the first stay wire type displacement meter 41 to the data acquisition system;
fifteenth, welding a second short steel bar on the flange of one side of the loading beam 23 and the second transverse steel beam 213, which is far away from the hearth; placing a second displacement meter mounting frame 44 on the ground, fixing a second stay wire type displacement meter 42 for measuring the displacement in the plane on a square steel pipe of the second displacement meter mounting frame 44, connecting a stay wire of the second stay wire type displacement meter 42 to a second short steel bar, and connecting a signal wire of the second stay wire type displacement meter 42 into a data acquisition system;
sixthly, opening the data acquisition system and the control system 5, checking whether wiring is accurate or not, and setting a fire test heating curve;
seventhly, starting a hydraulic system 241 to pre-load the double-steel-plate-concrete combined shear wall test piece 6 through the jack 24, and synchronously starting a data acquisition system to acquire displacement and temperature; keeping the load constant for 5min and unloading after no abnormal condition; the data acquisition system is reset and then starts to acquire again, the hydraulic system 241 is started again to load the preset load, and the load is kept constant for 15 min;
eighteen, opening the high-temperature camera 18 and shooting the deformation condition of the steel plate on the fire surface; the control system 5 is operated to start the fan 13 and the burner 12, the control system 5 automatically ensures that the furnace temperature is consistent with the set fire test heating curve by adjusting the air volume and the natural gas volume, simultaneously the furnace pressure does not exceed a set value, and the hydraulic fluid system 241 is automatically controlled to keep the pressure of the jack 24 unchanged;
nineteenth, in the test process, observing and recording the overflow condition of the surface of the steel plate and the local and overall deformation condition of the test piece; cleaning accumulated water on the surface of the steel plate by using a mop in time; measuring the temperature of the steel plate on the back fire surface of the test piece by using a non-contact infrared thermometer every 5 minutes;
and twentieth, after the test is finished, taking out the test piece, and carefully observing and recording the damage phenomenon of the fire-exposed surface of the test piece.
The utility model discloses a full scale fire test can accurately obtain the limit of fire resistance and the mechanics response law of wall body, can further deep research its atress mechanism under the conflagration in view of the above, provides reliable foundation for the fire resistance design method who proposes two steel sheets-concrete combined shear wall.
The technical means disclosed by the scheme of the present invention is not limited to the technical means disclosed by the above embodiments, but also includes the technical scheme formed by the arbitrary combination of the above technical features.
Claims (4)
1. The utility model provides a two steel sheet-concrete combination shear wall single face test device that receives fire which characterized in that: the device comprises a horizontal test furnace device, a loading device, a temperature measuring device, a displacement acquisition device, a control system and a data acquisition system;
the horizontal test furnace device comprises a furnace body, a combustor, a fan, a flue, a natural gas pipeline, an air pipe, a furnace pressure meter and a high-temperature camera; the furnace body is surrounded by two first furnace walls and two second furnace walls, a furnace cover is covered on the furnace body, and the furnace walls and the furnace cover are composed of outer steel plates and inner ceramic fiber cotton; the burners are arranged on the two first furnace walls and are simultaneously connected with a natural gas pipeline and an air pipe, and the air pipe is connected with a fan; the flue is arranged at the bottom of the hearth, is built by refractory bricks, is buried underground and leads to an outdoor chimney; the high-temperature camera is connected with a water cooling device and is arranged on the first furnace wall and the second furnace wall; the furnace pressure gauge is arranged on the first furnace wall;
the loading device comprises a horizontal reaction frame, a distribution beam, a loading beam, a jack and a bearing rigid frame; the horizontal reaction frame consists of two longitudinal steel beams, a first transverse steel beam, a second transverse steel beam and four haunched beams and is arranged above the bearing rigid frame; the two ends of the first transverse steel beam and the second transverse steel beam are connected with the longitudinal steel beam through high-strength bolts; the haunching beam is respectively connected with the longitudinal steel beam and the transverse steel beam through high-strength bolts; a dragging plate is welded on the flange of the inner side of the longitudinal steel beam, and two long round holes are formed in the dragging plate; a jack bracket is welded on the inner side flange of the first transverse steel beam;
the distribution beam is connected with the loading beam through a high-strength bolt; the loading beam is characterized in that webs at two ends of the loading beam extend outwards, bolt holes are formed in the extending parts, and the loading beam is connected to a carriage of the longitudinal steel beam through bolts;
a force sensor is arranged in the jack and is connected with a hydraulic system;
the jack is placed on the jack bracket of the first transverse steel beam;
the temperature measuring device comprises an armored K-type thermocouple for measuring the furnace temperature, a first common K-type thermocouple and a second common K-type thermocouple for measuring the temperature of the steel plate on the fire-receiving surface of the double-steel-concrete combined shear wall and the temperature of the concrete inside the double-steel-concrete combined shear wall respectively, a compression spring K-type thermocouple for measuring the temperature of the back fire surface of the double-steel-concrete combined shear wall and a non-contact infrared thermometer;
the displacement acquisition device comprises a first stay wire type displacement meter, a second stay wire type displacement meter, a first displacement meter mounting frame and a second displacement meter mounting frame; the first stay wire type displacement meter and the second stay wire type displacement meter are respectively arranged on the first displacement meter mounting frame and the second displacement meter mounting frame; the first displacement meter mounting frame and the second displacement meter mounting frame are respectively placed on the longitudinal steel beam and the ground;
the data acquisition system respectively acquires temperature, furnace pressure, displacement and force data through thermocouples, furnace pressure meters, displacement meters and force sensors which are arranged at each measuring point; the control system controls the jack, the burner and the fan through the built-in elements of the equipment.
2. The single-sided fire test device for the double-steel-plate-concrete combined shear wall according to claim 1, characterized in that: the bearing rigid frame consists of a top beam, two upright columns and two ground beams, wherein two ends of the top beam are connected to the upright columns through high-strength bolts, and the upright columns are welded on the ground beams; the bearing rigid frame is as high as the furnace body and is arranged at two ends of the furnace body.
3. The single-sided fire test device for the double-steel-plate-concrete combined shear wall according to claim 1, characterized in that: the centers of the web plates of the longitudinal steel beam, the transverse steel beams, the distributing beam and the loading beam are on the same horizontal plane, and the double-steel-plate-concrete combined shear wall is installed between the loading beam and the second transverse steel beam through high-strength bolts.
4. The single-sided fire test device for the double-steel-plate-concrete combined shear wall according to claim 1, characterized in that: the first displacement meter mounting frame consists of two transverse rigid frames and a longitudinal steel pipe; the transverse rigid frame consists of upright posts and cross rods, two ends of each cross rod are welded at the top ends of the upright posts, and the lower end of each upright post is welded on one square steel plate; two end points of the longitudinal steel pipe are welded in the middle of the cross rod; the second displacement meter mounting frame is composed of a square steel pipe and a short H-shaped steel, and the lower end of the square steel pipe is welded on a web plate of the short H-shaped steel.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110320235A (en) * | 2019-07-29 | 2019-10-11 | 东南大学 | A kind of double steel plate-combined concrete shear wall single side is by fire test device and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110320235A (en) * | 2019-07-29 | 2019-10-11 | 东南大学 | A kind of double steel plate-combined concrete shear wall single side is by fire test device and method |
| CN110320235B (en) * | 2019-07-29 | 2024-01-16 | 东南大学 | Single-sided fire test device and method for double-steel-plate-concrete combined shear wall |
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