CN111855407B - Device suitable for performance test of fireproof construction of building curtain wall - Google Patents
Device suitable for performance test of fireproof construction of building curtain wall Download PDFInfo
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- CN111855407B CN111855407B CN202010701603.XA CN202010701603A CN111855407B CN 111855407 B CN111855407 B CN 111855407B CN 202010701603 A CN202010701603 A CN 202010701603A CN 111855407 B CN111855407 B CN 111855407B
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Abstract
The invention relates to a device suitable for testing the fireproof structural performance of a building curtain wall, which comprises a furnace body, wherein the furnace body is of a rectangular structure with an opening at one side, and a curtain wall for testing is placed at the opening side; the furnace body comprises a heat insulation layer, a steel structure frame is fixed on the outer side of the heat insulation layer, and a steel structure top beam is fixed on the top of the furnace body; the furnace body further comprises a steel structure beam with a detachable front end of the steel structure frame and a simulated floor slab, wherein the simulated floor slab is suspended in the furnace body through ropes, and at least one first telescopic motor is arranged along the horizontal direction of the simulated floor slab; the front side of the furnace body is provided with a simulation partition wall, and at least one second telescopic motor is arranged along the vertical direction of the simulation partition wall; the first telescopic motor drives the simulated floor to horizontally move, and the second telescopic motor drives the simulated partition to horizontally move. The invention can detect the fireproof performance of the fireproof blocking of the building curtain wall after the building curtain wall is subjected to temperature load, wind load and earthquake action, and simultaneously reduces the error of the fireproof performance test of the curtain wall.
Description
Technical Field
The invention relates to the technical field of building curtain wall performance detection, in particular to a device suitable for a building curtain wall fireproof structure performance test.
Background
Along with the high-speed development of the economy in China, the construction quantity is also vigorous, and the building curtain wall is widely applied. The curtain wall fireproof is an important component in the whole building fireproof design, and is used for preventing or delaying the spread of fire when a fire disaster occurs, so that convenience and time guarantee are provided for fire rescue and extinguishing work. In view of the current situation of building curtain walls, a part of curtain wall companies lack enough knowledge on fireproof smoke prevention concepts, and fireproof designs of a plurality of curtain wall projects are not perfect. Relevant statistics show that the quality problem of fireproof smoke-proof blocking of the curtain wall is one of the most common problems in design. Fire statistics of "American fire Association NFPA" show that, at the time of fire occurrence, the proportion of suffocation to death in humans due to inhalation of excessive amounts of toxic smoke gases is 75%; the direct fire casualties proportion is 20%, and the proportion of casualties caused by the damage of building structures due to fire is 5%. Based on this statistics we can see that the large amount of smoke generated by the fire is the most direct factor causing personnel loss in the case of fire. When the curtain wall type building is adopted, a path is provided for three-dimensional combustion of fire, and a great amount of dense smoke and toxic gas are generated, so that direct harm is generated to human bodies. In addition, if no interlayer fireproof blocking exists, when a fire disaster occurs, the longitudinal flame can quickly spread to the roof due to the chimney effect; if the partition wall is not used for fireproof blocking or the blocking quality is poor, in an indoor fire disaster, the local combustion in the indoor space of the layer can be quickly transited to other indoor spaces of the layer. To cope with this phenomenon, in order to slow down the spread of fire and reduce the damage and loss of fire when a fire occurs, the most effective passive fire protection measures are to construct an effective smoke and fire protection structure in a building when designing a building curtain wall, except for selecting materials with good fire resistance from materials of a heat insulation system and a curtain wall. How to provide the building curtain wall with fire resistance and how to evaluate the validity of the fire resistance of the building curtain wall are the problems to be solved urgently at present.
Currently, building element fire resistance tests are an important means of studying the fire resistance properties of structures, and such tests are generally carried out using combustion test furnaces. The combustion test furnace provides a standard fire temperature field, is matched with load and boundary constraint applied to the test component, and is provided with a temperature thermocouple in the test component, so that the combustion test furnace can be used for researching the development process of the internal temperature field of the component and the bearing capacity of the component at high temperature, thereby providing scientific basis for fire resistance design of the building component and damage evaluation, repair and reinforcement of the structure after the fire.
As one of important measures for preventing fire and smoke from spreading, the fireproof blocking of the building curtain wall can continue to play the functions of the building curtain wall after the building curtain wall is subjected to temperature load, wind load and earthquake action, and no effective detection method exists at present. Therefore, in order to solve the problems in the prior art, a device suitable for testing the fireproof construction performance of the building curtain wall is needed.
Disclosure of Invention
The invention aims to provide a device suitable for testing the fireproof construction performance of a building curtain wall, which comprises a furnace body, wherein the furnace body is of a rectangular structure with an opening at one side, and a curtain wall for testing is placed at the opening side;
the furnace body comprises a heat insulation layer, a steel structure frame is fixed on the outer side of the heat insulation layer, and a steel structure top beam is fixed on the top of the furnace body;
the furnace body also comprises a steel structure beam with a detachable front end of the steel structure frame and a simulated floor,
the simulated floor is suspended in the furnace body through a rope, and at least one first telescopic motor is arranged along the horizontal direction of the simulated floor;
the front side of the furnace body is provided with a simulation partition wall, and at least one second telescopic motor is arranged along the vertical direction of the simulation partition wall;
the first telescopic motor drives the simulated floor to horizontally move, and the second telescopic motor drives the simulated partition to horizontally move.
In a preferred embodiment, the telescopic rod of the first telescopic motor is directly fixed on the steel structure beam,
the telescopic cylinder of the first telescopic motor is directly fixed on the simulated floor slab.
In a preferred embodiment, the simulated floor slab is provided with a plurality of fixing parts, and the telescopic rod of the first telescopic motor is fixed on the fixing parts;
the steel structure beam is used for fixing a first support of the first telescopic motor, and a telescopic cylinder of the first telescopic motor is fixed on the first support.
In a preferred embodiment, the gap between the simulated floor slab and the curtain wall cross beam is filled with a first filler,
the first telescopic motor drives the simulated floor to horizontally move, and extrusion and tensile test are carried out on a first filler in a gap between the curtain wall beam and the simulated floor.
In a preferred embodiment, the telescopic rod of the second telescopic motor is fixed on the simulated partition wall;
the front end of the furnace body is provided with a fixed upright post, the fixed upright post is used for fixing a second support of a second telescopic motor, and a telescopic cylinder of the second telescopic motor is fixed on the second support.
In a preferred embodiment, the telescopic rod of the second telescopic motor is fixed on the simulated partition wall through a bent extension rod;
the front end of the furnace body is provided with a fixed upright post, the fixed upright post is used for fixing a second support of a second telescopic motor, and a telescopic cylinder of the second telescopic motor is fixed on the second support.
In a preferred embodiment, the gap between the dummy partition and the curtain wall column is filled with a second filler,
the second telescopic motor drives the simulated partition wall to horizontally move, and extrusion and tensile test are conducted on second filler in a gap between the curtain wall column body and the simulated partition wall.
Another object of the present invention is to provide a displacement adaptability test method of a device suitable for testing the fireproof construction performance of a building curtain wall, comprising the following steps:
installing a curtain wall, and fixing a curtain wall column body and a steel structure beam;
the method comprises the steps of starting a first telescopic motor in a first filler extrusion test, extending a telescopic rod of the first telescopic motor to drive a simulated floor slab to move towards a curtain wall, and extruding a first filler in a gap between a curtain wall beam and the simulated floor slab by an extrusion part;
the telescopic rod of the first telescopic motor is retracted to drive the simulated floor plate to move back to the curtain wall direction, so that the extrusion/stretching test of the first filler is completed;
the second filler extrusion test is carried out, a second telescopic motor is started, a telescopic rod of the second telescopic motor stretches to drive the simulated partition wall to move towards the curtain wall, and the simulated partition wall extrudes the second filler in a gap between a curtain wall column body and the simulated partition wall;
and the expansion rod of the second expansion motor is retracted to drive the simulated partition wall to move back to the curtain wall direction, so that the extrusion/stretching test of the second filler is completed.
In a preferred embodiment, extrusion/tensile tests are performed on the second fillers on both sides of the curtain wall respectively, and after the extrusion/tensile test on one side is completed, a plugging steel plate is installed between the simulated partition wall and the steel frame structure frame.
In a preferred embodiment, the first filler is coated with a first test layer on the outside and the second filler is coated with a second test layer on the outside;
judging the tightness of the first filler according to the cracks of the first test layer and the continuity of the cracks and the bonding of the first test layer and the base layer;
and judging the tightness of the second filler according to the cracks of the second test layer and the continuity of the cracks and the bonding of the second test layer and the base layer. According to the combustion furnace suitable for the curtain wall plugging test, through the simulated floor slab and the simulated partition wall, the extrusion test is carried out on the filler in the gap between the curtain wall and the floor slab, and the extrusion test is carried out on the filler between the curtain wall and the partition wall, the fire prevention plugging performance of the building curtain wall after the building curtain wall is subjected to temperature load, wind load and earthquake action can be effectively detected, and therefore the fire prevention design of building components is guided.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention as claimed.
Drawings
Further objects, functions and advantages of the present invention will be clarified by the following description of embodiments of the present invention with reference to the accompanying drawings, in which:
FIG. 1 is a schematic front view of a device structure suitable for testing the fire-protection construction performance of a building curtain wall according to the present invention.
Fig. 2 is a schematic rear view of a device structure suitable for testing the fire-protection construction performance of a building curtain wall according to the present invention.
Fig. 3 is a view A-A of fig. 1.
Fig. 4 is a schematic view of a steel structural beam of an apparatus of the present invention suitable for testing the fire protection construction performance of a building curtain wall.
Fig. 5 is a top view of fig. 4.
Fig. 6 is a side view B of fig. 4.
Fig. 7 is a schematic illustration of a simulated floor slab of an apparatus of the present invention suitable for testing the performance of a building curtain wall fire protection construction.
Fig. 8 is a side view of a simulated floor mount of an apparatus of the present invention suitable for testing the fire protection construction of a building curtain wall.
Fig. 9 is a top view of fig. 8.
Fig. 10 is a side view of fig. 8C.
Fig. 11 is a schematic illustration of a simulated floor fixture of an apparatus of the present invention suitable for testing the performance of a building curtain wall fire protection construction.
Fig. 12 is an enlarged schematic illustration of simulated floor fixing of an apparatus of the present invention suitable for testing the performance of a building curtain wall fire protection construction.
Fig. 13 is a top view of a simulated floor mounted first telescoping motor of an apparatus of the present invention suitable for testing the fire protection construction of a building curtain wall.
Fig. 14 is a schematic sectional view of the installation of a first telescoping motor in one embodiment of the present invention.
Fig. 15 is a schematic view of a device for simulating gap filling of a first filler between a floor slab and a curtain wall for a performance test of a fire protection construction of a building curtain wall according to an embodiment of the present invention.
Fig. 16 is a schematic sectional view of a first telescoping motor in accordance with another embodiment of the present invention.
Fig. 17 is a schematic view of a device for simulating gap filling of a first filler between a floor slab and a curtain wall for a performance test of a fire-resistant construction of a building curtain wall according to another embodiment of the present invention.
FIG. 18 is a schematic illustration of a simulated wall mount second telescoping motor in one embodiment of an apparatus of the present invention suitable for testing the performance of a building curtain wall fire protection construction.
FIG. 19 is a top view of a second telescoping motor mounted to a simulated wall in one embodiment of an apparatus of the present invention suitable for testing the fire protection construction of a building curtain wall.
FIG. 20 is an enlarged schematic view of a second telescoping motor for simulating the installation of a partition wall in one embodiment of an apparatus of the present invention suitable for testing the performance of a fire protection construction for a building curtain wall.
Fig. 21 is a schematic view of a second telescoping motor mounted to a simulated wall in another embodiment of an apparatus of the present invention suitable for testing the performance of a fire protection construction of a building curtain wall.
Fig. 22 is a top view of a second telescoping motor mounted to a simulated wall of another embodiment of an apparatus of the present invention suitable for testing the fire protection construction of a building curtain wall.
FIG. 23 is an enlarged schematic view of a second telescoping motor for simulating the installation of a partition wall in another embodiment of an apparatus of the present invention for testing the performance of a fire protection construction for a building curtain wall.
Detailed Description
The objects and functions of the present invention and methods for achieving these objects and functions will be elucidated by referring to exemplary embodiments. However, the present invention is not limited to the exemplary embodiments disclosed below; this may be implemented in different forms. The essence of the description is merely to aid one skilled in the relevant art in comprehensively understanding the specific details of the invention. Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the drawings, the same reference numerals represent the same or similar components, or the same or similar steps.
The combustion furnace suitable for curtain wall plugging test provided by the invention is described in detail by a specific embodiment, and a front schematic view of a device structure suitable for building curtain wall fireproof construction performance test is shown in fig. 1, a back schematic view of a device structure suitable for building curtain wall fireproof construction performance test is shown in fig. 2, and A-A view in fig. 1 is shown in fig. 3. According to the embodiment of the invention, the device suitable for testing the fireproof construction performance of the building curtain wall comprises a furnace body 1, wherein the furnace body 1 is of a rectangular structure with one side open, and the curtain wall for testing is placed on the open side. The furnace body comprises a heat insulation layer 104, a steel structure frame 101 is fixed on the outer side of the heat insulation layer 104, and a steel structure top beam 102 is fixed on the top of the furnace body 1.
According to an embodiment of the invention, the insulating layer 104 of the furnace body comprises fireproof bricks, fireproof high temperature asbestos, fireproof bricks and fireproof ceramic fiber blankets from outside to inside. When the temperature resistant range of the innermost layer is 1000-1300 ℃, the temperature of the steel structure frame 101 fixed on the outermost layer is normal temperature. In the test process, the curtain wall arranged at the opening side of the combustion furnace is subjected to fire resistance test by igniting and burning in the combustion furnace.
According to the embodiment of the invention, the furnace body 1 further comprises a simulation floor slab 3, the simulation floor slab 3 is used for simulating the floor slab of the building, the simulation floor slab 3 is suspended in the furnace body through the ropes 301, and the height of the simulation floor slab 3 can be changed through the expansion and contraction of the ropes 301, so that the furnace body 1 is suitable for installing curtain walls with different specifications on the opening side of the furnace body 1.
According to the embodiment of the invention, the pulley block 103 is arranged on the steel structure top beam 102, the rope 301 suspending the simulated floor 3 is connected with the motor 4 through the pulley block 103, the motor 4 drives the rope 301 to stretch to enable the simulated floor to move up and down, the height of the simulated floor is changed, and therefore the size of the opening side of the furnace body 1 is changed.
According to the embodiment of the invention, a pit is dug on the ground 6 to build a furnace body, and a ladder stand 5 is arranged around the back side of the furnace body 1 for related operations of staff activities.
In some specific embodiments, the opening side of the furnace body 1 can be selected to be 5×8 m in size, so as to meet the existing fire resistance test of curtain walls with various specifications.
In the embodiment of the invention, in the curtain wall test process, the floor slab corresponding to the vertical height of the curtain wall is adjusted by simulating the floor slab 3, and the two sides of the curtain wall and the two sides of the furnace body are plugged by adopting plugging steel plates with different specifications.
According to the embodiment of the invention, the front end of the steel structure frame 101 is detachably provided with the steel structure beam 2, and the simulated floor slab 3 is fixed through the steel structure beam 2. The dummy floor 3 is fixed to the mounting member 302, and the steel structural beam 2 fixes the dummy floor 3 by the mounting member 302 (fixing means will be described in detail later).
Fig. 4 is a schematic view of a steel structural beam of an apparatus for testing fireproof construction performance of a building curtain wall according to the present invention, fig. 5 is a plan view of fig. 4, and fig. 6 is a side view of fig. 4B, wherein a simulated floor slab 3 is fixed by a detachable steel structural beam 2 at the front end of a steel structural frame 101 according to an embodiment of the present invention. The steel structure beam 2 includes a first bolt hole 201 and a second bolt hole 202.
A first bolt hole 201 for detachably fixing the steel structural beam 2 to the steel framed frame 101 by bolts. A second bolt hole 202 for detachably fixing the steel structural beam 2 to the simulated floor slab 3 by bolts.
Fig. 7 is a schematic diagram of a simulated floor slab of the device suitable for testing the fireproof construction performance of a building curtain wall, wherein the simulated floor slab 3 is internally embedded with a first reinforcing rib 303 in a crossing manner, and the upper surface of the simulated floor slab 3 is provided with a third bolt hole 304 for installing an installation piece.
Fig. 8 shows a side view of a simulated floor slab mounting member of an apparatus for testing fire protection construction performance of a building curtain wall according to the present invention, fig. 9 shows a top view of fig. 8, fig. 10 shows a side view of fig. 8 in C, a simulated floor slab 3 is mounted to a mounting member 302, the mounting member 302 includes a fourth bolt hole 306 for hole-fitting with a third bolt 304, and a fifth bolt hole 305 for hole-fitting with a second bolt 202.
In this embodiment, the mounting member 302 is bolted to the simulated floor slab 3 through the fourth bolt hole 306 and the third bolt hole 304 pair Ji Ningru.
In some embodiments, the first reinforcing ribs are embedded inside the simulated floor slab 3 in a crossing manner, and the simulated floor slab 3 is welded and fixed with the installation member 302.
In some preferred embodiments, the second bolt holes 202 are pre-fitted with bolts 203, and when the simulated floor slab 3 is moved to a position flush with the steel structural beam 2, the simulated floor slab 3 is secured to the steel structural beam 2 by inserting the bolts 203 into the fifth bolt holes 305.
In some preferred embodiments, the steel structural beam 2 is provided with a second stiffener 204 and a third stiffener 307 is provided on the mount 302 to ensure the rigidity of the steel structural beam 2 and the mount 302.
The following describes a mode of fixing a simulated floor slab of a device for testing the fireproof construction performance of a building curtain wall according to the present invention, and a schematic diagram of fixing a simulated floor slab of a device for testing the fireproof construction performance of a building curtain wall according to the present invention is shown in fig. 11, and a schematic diagram of fixing and amplifying a simulated floor slab of a device for testing the fireproof construction performance of a building curtain wall according to the present invention is shown in fig. 12.
In the fire resistance test, the movable 3 platform needs to be fixed on the steel structure beam 2, for example, when a curtain wall with the width of 2 meters and the height of 4 meters is subjected to the fire resistance test, the curtain wall is placed on the opening side of the furnace body 1, and the simulated floor slab is lowered to the position with the height of 2 meters through the motor 4.
The steel structure beam 2 is fixed at a position where the height of the steel frame 101 is 2 meters, specifically, the first bolt holes 201 are aligned with the bolt holes at the position where the height of the steel frame 101 is 2 meters, and the steel structure beam 2 is fixed on the steel frame 101 by bolts. And then the bolts 203 of the steel structure beam 2 are inserted into the fifth bolt holes 305, and the simulated floor slab 3 is fixed on the steel structure beam 2.
According to the embodiment of the invention, at least 4 fixing blocks 312 for fixing ropes are arranged on the upper surface of the simulated floor slab, so that the stability of the vertical movement of the simulated floor slab 3 is ensured.
After the process is finished, sealing steel plates are arranged in gaps between two sides of the curtain wall and the furnace body, and then ignition is carried out in the furnace body 1, so that a curtain wall fire resistance test is carried out.
Gaps between building curtain walls and floors, curtain walls and partition walls need to be filled with fillers (for example, fire-resistant rock wool), and the tightness of the fillers influences the fireproof performance, the sound insulation effect and the fire load and wind load of the building curtain walls. According to the embodiment of the invention, the device suitable for the fire-proof construction performance test of the building curtain wall fills the gap between the curtain wall beam and the simulated floor slab 3 (the simulated floor slab) before the combustion test, fills the curtain wall column and the simulated partition wall before the extrusion/tensile test of the filler is carried out.
Fig. 13 is a plan view showing a first telescopic motor installed on a movable platform of a combustion furnace suitable for curtain wall plugging test, and a device suitable for testing fireproof construction performance of a building curtain wall according to the present invention comprises a furnace body having a rectangular structure with an opening at one side, and a curtain wall 7 for testing is placed at the opening side. The furnace body also comprises a steel structure beam 2 with a detachable steel structure frame front end and a simulated floor slab 3.
The simulated floor 3 is suspended in the furnace body by ropes, and at least one first telescopic motor 309 is arranged along the horizontal direction of the simulated floor 3. In this embodiment, 3 first telescopic motors 309 are exemplarily arranged in the horizontal direction of the simulated floor slab 3.
In some preferred embodiments, the simulated floor 3 is evenly provided with displacement meters to ensure consistent displacement throughout the simulated floor 3.
According to the invention, in one embodiment, the telescopic cylinder of the first telescopic motor is fixed directly to the simulated floor. Fig. 14 is a schematic view of an installation section of a first telescopic motor according to an embodiment of the present invention, and fig. 15 is a schematic view of a device for simulating gap filling of a first filler between a floor slab and a curtain wall for a fire protection construction performance test of a building curtain wall according to an embodiment of the present invention. The telescopic rod 310 of the first telescopic motor 309 is directly fixed to the steel structure beam 2. The telescopic cylinder of the first telescopic motor 309 is directly fixed on the simulated floor slab 3, and the curtain wall column 701 is fixed on the steel structure beam 2. The fixing member 308 is provided with a pressing member 311, and a gap between the pressing member 311 and the curtain wall cross member 702 is filled with the first filler 8. Preferably, the curtain wall beam 702 is provided with angle steel 703, and the first filler 8 is filled between the extrusion part 311 and the angle steel 703.
During extrusion/tensile test of the first filler 8 in the gap between the curtain wall beam 702 and the simulated floor slab 3, the simulated floor slab 3 and the steel structure beam 2 are not fixed (the simulated floor slab 3 and the steel structure beam 2 are fixed during fire resistance test), the first telescopic motor 309 is started, the telescopic rod 310 of the first telescopic motor 309 stretches, the first telescopic motor 309 drives the simulated floor slab 3 to horizontally move, and extrusion/tensile test of the first filler 8 in the gap between the curtain wall beam 702 and the simulated floor slab 3 is performed.
Specifically, in this embodiment, the telescopic rod 310 of the first telescopic motor 309 is extended to drive the moving platform 3 to move toward the curtain wall 7, and the extrusion component 411 extrudes the first filler 8 in the gap between the curtain wall beam 402 and the simulated floor 3. The telescopic rod 301 of the first telescopic motor 309 is retracted to drive the simulated floor board to move back to the curtain wall direction, so that the first filler extrusion/stretching test is completed.
When the extrusion/tensile test is completed, the sealability of the first filler 8 is judged according to the cracks of the first test layer 801 coated on the first filler 8 and the continuity of the bonding with the base layer.
According to another embodiment of the invention, the telescopic cylinder of the first telescopic motor is fixed to the simulated floor by means of a fixing element. Fig. 16 is a schematic view showing an installation cross section of a first telescopic motor according to another embodiment of the present invention, and fig. 17 is a schematic view showing a first filler for filling a gap between a simulated floor and a curtain wall of an apparatus for testing fireproof construction performance of a building curtain wall according to another embodiment of the present invention. The simulated floor 3 is provided with a plurality of fixing members 308, and the telescopic rod of the first telescopic motor 309 is fixed to the fixing members 308. The steel structure beam 2 is fixed on the first support 205 of the first telescopic motor 309, the telescopic cylinder of the first telescopic motor 309 is fixed on the first support 205, and the curtain wall column 701 is fixed on the steel structure beam 2. The fixing member 308 is provided with a pressing member 311, and a gap between the pressing member 311 and the curtain wall cross member 702 is filled with the first filler 8. Preferably, the curtain wall beam 702 is provided with angle steel 703, and the first filler 8 is filled between the extrusion part 311 and the angle steel 703.
During extrusion/tensile test of the first filler 8 in the gap between the curtain wall beam 702 and the simulated floor slab 3, the simulated floor slab 3 and the steel structure beam 2 are not fixed (the simulated floor slab 3 and the steel structure beam 2 are fixed during fire resistance test), the first telescopic motor 309 is started, the telescopic rod 310 of the first telescopic motor 309 stretches, the first telescopic motor 309 drives the simulated floor slab 3 to horizontally move, and extrusion/tensile test of the first filler 8 in the gap between the curtain wall beam 702 and the simulated floor slab 3 is performed.
Specifically, in this embodiment, the telescopic rod 310 of the first telescopic motor 309 is extended to drive the moving platform 3 to move toward the curtain wall 7, and the extrusion component 411 extrudes the first filler 8 in the gap between the curtain wall beam 402 and the simulated floor 3. The telescopic rod 301 of the first telescopic motor 309 is retracted to drive the simulated floor board to move back to the curtain wall direction, so that the first filler extrusion/stretching test is completed.
When the extrusion/tensile test is completed, the sealability of the first filler 8 is judged according to the cracks of the first test layer 801 coated on the first filler 8 and the continuity of the bonding with the base layer.
FIG. 18 is a schematic view of a second telescoping motor mounted to a simulated wall in one embodiment of an apparatus of the present invention for testing the performance of a building curtain wall fire protection configuration, and FIG. 19 is a top view of a second telescoping motor mounted to a simulated wall in one embodiment of an apparatus of the present invention for testing the performance of a building curtain wall fire protection configuration. FIG. 20 is an enlarged schematic view of a second telescoping motor mounted to a simulated wall in one embodiment of an apparatus of the present invention for testing the performance of a fire protection construction for a building curtain wall.
According to the embodiment of the invention, the analog partition wall 9 is arranged on the front side of the furnace body, and at least one second telescopic motor 1102 is arranged along the vertical direction of the analog partition wall 9. In this embodiment, the simulation partition wall 9 is a channel steel, and the exemplary 2 second telescopic motors 1102 are arranged along the vertical direction of the simulation partition wall 9.
In some preferred embodiments, the simulated diaphragm 9 is evenly arranged with displacement meters to ensure consistent displacement throughout the simulated diaphragm 9.
The curtain wall column 701 is fixed on the steel structure beam 2, the front end of the furnace body is provided with a fixed upright post 11, the fixed upright post 11 is used for fixing a second support 1101 of a second telescopic motor 1102, a telescopic rod 1103 of the second telescopic motor 1102 is fixed on the simulated partition wall 9, a telescopic cylinder of the second telescopic motor 1102 is fixed on the second support 1101, and a gap between the simulated partition wall 9 and the curtain wall column 701 is filled with a second filler 10.
When the extrusion/tensile test of the second filler 10 is performed for filling the gap between the simulated partition wall 9 and the curtain wall column 701, the second telescopic motor 1102 is started, the telescopic rod 1103 of the second telescopic motor 1102 is extended, the second telescopic motor 1102 drives the simulated partition wall 9 to horizontally move toward the curtain wall 7, and the second filler 10 is filled in the gap between the simulated partition wall 9 and the curtain wall column 701.
The telescopic rod 1103 of the second telescopic motor 1102 is retracted to drive the simulated partition 9 to move back to the curtain wall 7 direction, so as to complete the second filler extrusion/stretching test.
When the extrusion/tensile test is completed, the sealability of the second filler 10 is judged according to the continuity of the bonding of the second test layer 1001 coated on the second filler 10 to the base layer.
In the following embodiment, the second telescopic motor 1102 is fixed to the dummy spacer 9 by a bending extension bar during the extrusion/tensile test of the gap-filling second filler 10 between the dummy spacer 9 and the curtain wall column 701. A schematic diagram of a second telescopic motor for installing a simulated partition in another embodiment of an apparatus for testing the fire-resistant construction of a building curtain wall according to the present invention as shown in fig. 21, a plan view of a second telescopic motor for installing a simulated partition in another embodiment of an apparatus for testing the fire-resistant construction of a building curtain wall according to the present invention as shown in fig. 22, and an enlarged schematic diagram of a second telescopic motor for installing a simulated partition in another embodiment of an apparatus for testing the fire-resistant construction of a building curtain wall according to the present invention as shown in fig. 23.
According to the embodiment of the invention, the analog partition wall 9 is arranged on the front side of the furnace body, and at least one second telescopic motor 1102 is arranged along the vertical direction of the analog partition wall 9. In this embodiment, the simulation partition wall 9 is a channel steel, and the exemplary 2 second telescopic motors 1102 are arranged along the vertical direction of the simulation partition wall 9.
The curtain wall column 701 is fixed on the steel structure beam 2, the front end of the furnace body is provided with a fixed upright post 11, the fixed upright post 11 is used for fixing a second support 1101 of a second telescopic motor 1102, a telescopic rod 1103 of the second telescopic motor 1102 is fixed on the simulated partition wall 9 through a bent extension rod 1104, a telescopic cylinder of the second telescopic motor 1102 is fixed on the second support 1101, and a gap between the simulated partition wall 9 and the curtain wall column 701 is filled with a second filler 10. In some embodiments, positioning plates 1105 are provided on both sides of the bending extension 1104 to ensure the smoothness of the movement of the bending extension 1104.
When the extrusion/stretching test of the second filler 10 is performed to fill the gap between the dummy partition 9 and the curtain wall column 701, the second telescopic motor 1102 is started, and the second telescopic motor 1102 drives the dummy partition 9 to horizontally move. Specifically, the telescopic rod 1103 of the second telescopic motor 1102 is retracted, and the bending extension rod 1104 drives the simulated diaphragm 9 to horizontally move towards the curtain wall 7, so as to squeeze the gap between the simulated diaphragm 9 and the curtain wall column 701 to fill the second filler 10.
The expansion rod 1103 of the second expansion motor 1102 is extended to drive the simulated partition 9 to move back to the curtain wall 7 direction, so as to complete the extrusion/stretching test of the second filler.
When the extrusion test is completed, the sealability of the second filler 10 is judged according to the cracks of the second test layer 1001 coated on the second filler 10 and the continuity of the bonding with the base layer.
The displacement adaptability test method of the device suitable for the fire-proof construction performance test of the building curtain wall is described below, and according to the embodiment of the invention, the plugging test method of the combustion furnace suitable for the curtain wall plugging test comprises the following steps:
step one, installing a curtain wall, and fixing a curtain wall column 701 and a steel structure beam 2.
Step two, the extrusion/tensile test of the first filler 8 is performed, the first telescopic motor 309 is started, the telescopic rod 310 of the first telescopic motor stretches to drive the simulated floor slab 3 to move towards the curtain wall 7, and the extrusion part 311 extrudes the first filler of the gap between the curtain wall beam 702 and the simulated floor slab 3.
The telescopic rod 310 of the first telescopic motor 3309 is retracted to drive the simulated floor slab 3 to move back to the curtain wall 7, so that the extrusion/stretching test of the first filler 8 is completed.
Step three, a second filler 10 extrusion/tensile test is performed, a second telescopic motor 1102 is started, and a telescopic rod 1103 of the second telescopic motor 1102 drives the simulated partition wall 9 to move towards the curtain wall 7, and the simulated partition wall 9 extrudes the second filler 10 in a gap between the curtain wall column 701 and the simulated partition wall 9.
The expansion rod 1103 of the second expansion motor 1102 drives the simulated partition 9 to move back to the curtain wall 7, so as to complete the extrusion/stretching test of the second filler 10.
The first filler 8 is coated with a first test 801 layer on the outside and the second filler 10 is coated with a second test 1001 layer on the outside. When the extrusion/tensile test is completed, the sealability of the first filler 8 is judged according to the continuity of the bonding of the crack of the first test layer 801 coated on the first filler 8 to the base layer, and the sealability of the second filler 10 is judged according to the continuity of the bonding of the crack of the second test layer 1001 coated on the second filler 10 to the base layer.
According to the embodiment of the invention, the second fillers 10 are respectively arranged at two sides of the curtain wall 7, the second fillers 10 at two sides of the curtain wall 7 are respectively subjected to extrusion/tensile test, and after the extrusion/tensile test of one side is finished, the plugging steel plate 12 is arranged between the simulated partition wall 9 and the steel frame structure 101. For example, in the embodiment, first, the extrusion/stretching test is performed on the second filler on the right side of the curtain wall 7, and after the extrusion/stretching test is completed, the sealing of the right filler is qualified, and then the plugging steel plate 12 is installed between the simulated partition wall 9 and the steel frame 101.
And then, performing extrusion/tensile test on the second filler at the left side of the left curtain wall 7, and after the extrusion/tensile test is finished, installing a plugging steel plate 12 between the simulated partition wall 9 and the steel frame structure frame 101 if the left filler is qualified in sealing.
In some embodiments, it is also possible to perform a simultaneous extrusion/tensile test on the second filler 10 on both sides of the curtain wall 7.
After the first filler extrusion/tensile test of the gap between the curtain wall and the simulated floor and the second filler extrusion/tensile test of the gap between the curtain wall and the simulated partition wall are completed, a plugging steel plate is installed between the simulated partition wall and the steel frame framework, and the simulated floor and the steel structure beam are fixed for the curtain wall fire resistance test, and the specific fixing mode of the simulated floor and the steel structure beam is described in detail above and is not repeated here.
According to the combustion furnace suitable for the curtain wall plugging test, through the simulated floor slab and the simulated partition wall, the extrusion test is carried out on the filler in the gap between the curtain wall and the floor slab, and the extrusion test is carried out on the filler between the curtain wall and the partition wall, the fire prevention plugging performance of the building curtain wall after the building curtain wall is subjected to temperature load, wind load and earthquake action can be effectively detected, and therefore the fire prevention design of building components is guided.
Other embodiments of the invention will be apparent to and understood by those skilled in the art from consideration of the specification and practice of the invention disclosed herein. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
Claims (7)
1. The device is suitable for testing the fireproof construction performance of the building curtain wall, and is characterized by comprising a furnace body, wherein the furnace body is of a rectangular structure with an opening at one side, and a curtain wall for testing is placed at the opening side;
the furnace body comprises a heat insulation layer, a steel structure frame is fixed on the outer side of the heat insulation layer, and a steel structure top beam is fixed on the top of the furnace body;
the furnace body also comprises a steel structure beam with a detachable front end of the steel structure frame and a simulated floor,
the simulated floor is suspended in the furnace body through a rope, and at least one first telescopic motor is arranged along the horizontal direction of the simulated floor;
the front side of the furnace body is provided with a simulation partition wall, and at least one second telescopic motor is arranged along the vertical direction of the simulation partition wall;
the first telescopic motor drives the simulated floor to horizontally move, and the second telescopic motor drives the simulated partition to horizontally move;
the telescopic rod of the second telescopic motor is fixed on the simulation partition wall, or the telescopic rod of the second telescopic motor is fixed on the simulation partition wall through a bending extension rod;
the front end of the furnace body is provided with a fixed upright post, the fixed upright post is used for fixing a second support of a second telescopic motor, and a telescopic cylinder of the second telescopic motor is fixed on the second support;
and the second filler is filled in the gap between the simulated partition wall and the curtain wall column body, and the second telescopic motor drives the simulated partition wall to horizontally move so as to carry out extrusion test on the second filler in the gap between the curtain wall column body and the simulated partition wall.
2. The device for testing the fireproof construction performance of the building curtain wall according to claim 1, wherein the telescopic rod of the first telescopic motor is directly fixed on the steel structure beam,
the telescopic cylinder of the first telescopic motor is directly fixed on the simulated floor slab.
3. The apparatus for testing the fireproof construction performance of a building curtain wall according to claim 1, wherein the simulated floor slab is provided with a plurality of fixing parts, and the telescopic rod of the first telescopic motor is fixed on the fixing parts;
the steel structure beam is used for fixing a first support of the first telescopic motor, and a telescopic cylinder of the first telescopic motor is fixed on the first support.
4. A device suitable for testing the fireproof construction performance of a building curtain wall according to claim 3, wherein the gap between the simulated floor slab and the curtain wall beam is filled with a first filler,
the first telescopic motor drives the simulated floor to horizontally move, and extrusion and tensile test are carried out on a first filler in a gap between the curtain wall beam and the simulated floor.
5. A test method for a device adapted for testing the performance of a fire protection construction for a building curtain wall according to claim 4, said method comprising the steps of:
installing a curtain wall, and fixing a curtain wall column body and a steel structure beam;
starting a first telescopic motor in a first filler extrusion/tensile test, and extending a telescopic rod of the first telescopic motor to drive a simulated floor slab to move towards the curtain wall, wherein the simulated floor slab extrudes a first filler in a gap between a curtain wall beam and the simulated floor slab;
the telescopic rod of the first telescopic motor is retracted to drive the simulated floor plate to move back to the curtain wall direction, so that the extrusion/stretching test of the first filler is completed;
starting a second telescopic motor in a second filler extrusion/tensile test, and extending a telescopic rod of the second telescopic motor to drive the simulated partition wall to move towards the curtain wall, wherein the simulated partition wall extrudes a second filler in a gap between a curtain wall upright post and the simulated partition wall;
and the expansion rod of the second expansion motor is retracted to drive the simulated partition wall to move back to the curtain wall direction, so that the extrusion/stretching test of the second filler is completed.
6. The method according to claim 5, wherein the second fillers on both sides of the curtain wall are respectively subjected to extrusion/tensile test, and after the extrusion/tensile test on one side is completed, a sealing steel plate is installed between the simulated partition wall and the steel frame structure.
7. The method for testing a device suitable for testing the fireproof construction performance of a building curtain wall according to claim 5, wherein the outer side of the first filler is coated with a first test layer, and the outer side of the second filler is coated with a second test layer;
judging the tightness of the first filler according to the cracks of the first test layer and the continuity of the cracks and the bonding of the first test layer and the base layer;
and judging the tightness of the second filler according to the cracks of the second test layer and the continuity of the cracks and the bonding of the second test layer and the base layer.
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| CN114858962A (en) * | 2022-04-27 | 2022-08-05 | 中国地质大学（武汉） | Device for testing fire resistance of fireproof plugging material and using method thereof |
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