KR102674184B1 - Wooden post with fire-proof - Google Patents

Abstract

The present invention relates to a fire-resistant wooden pole, comprising: a vertical wooden pole; Flame retardant material installed on the outer surface of the wooden pole; and a wooden exterior material attached to the outer surface of the flame retardant material and made of the same wood as the wooden pole so as to be carbonized in the event of a fire. It is composed of a multiple structure by the wooden pole, the flame retardant material, and the wood exterior material to dissipate heat in the event of a fire. It can be blocked, and since the outer wooden cladding is made of wood, the wooden cladding ignites preferentially.

Description

Wooden post with fire-proof}

The present invention relates to a wooden pillar, a wooden pillar with fire resistance, a method of manufacturing the same, and a fire-resistant wooden pillar thereby.

In general, wooden pillars are used in various structures such as houses, buildings, or bridges. These wooden pillars are known to be very vulnerable to fire due to their material characteristics.

However, metals such as iron have high thermal conductivity in the event of a fire, so they can lose strength in a short period of time and buckle due to heat, whereas wood, unlike metals such as iron, has low thermal conductivity and thermal decomposition occurs when ignited or ignited. When the temperature exceeds 200°C, the carbon layer turns black and forms a char layer as shown in Figure 1. The carbonized layer formed in this way becomes thicker over time exposed to fire and blocks heat transfer to the interior of the wood. Accordingly, since sufficient heat is not transferred to the interior of the wood, the generation of volatile gases is suppressed, and additionally, combustion is stopped as the supply of heat source from the outside is cut off. In other words, even when wood is exposed to fire, it has a safe performance against high temperatures during fire due to the action of the carbonization layer formed on the surface. Therefore, wooden buildings with wooden pillars can be said to be safer because they can secure evacuation time for a certain period of time in the event of a fire, ensure safety and visibility for firefighting activities, and also delay the spread of fire.

Meanwhile, while domestic technical standards for wooden buildings in relation to fire safety are still at a rudimentary stage, recent changes in socio-economic conditions and interest in environmental issues have become important, and plans to revitalize wooden buildings as eco-friendly architecture are being sought. This is being actively discussed. As the scale of wooden construction increases and the supply of collective forms increases, fire safety technology is very important in its technical foundation. In addition, for wooden construction, the generalization or standardization of technical standards that take into account the material characteristics of wood will be an essential condition for the growth of the related industry. Accordingly, new methods and applications are required to introduce and implement performance design methods. Therefore, multifaceted research and institutional supplementation are needed to establish various standards and achieve harmony of performance techniques in fire safety design, including fire resistance design of wooden buildings.

Republic of Korea Patent Registration No. 10-2069534 (Jeonil Wood Industry Co., Ltd.) relates to a wooden pillar. In the wooden pillar, a frame is formed at one end and a frame groove corresponding to the frame is formed at the other end, wherein the frame is, It includes a neck part that protrudes in the longitudinal direction from one end of the wooden pillar and a coupling part that extends from the neck part and forms a width and height greater than that of the neck part, wherein the coupling part has a square pillar shape with rounded corners, and the frame and the wooden pillar. The upper surfaces of the are aligned and are provided with an insertion groove formed when the wooden pillars are connected to each other, wherein the insertion groove is formed to extend from both upper and lower sides of the frame and frame groove to a portion of one end or the other end of the wooden pillar, A 'ㄷ'-shaped binding reinforcement plate can be inserted, and when inserting the binding reinforcement plate, the upper and lower sides of the frame and frame groove can be prevented from being misaligned, and the contact surface of the binding reinforcement plate and the insertion groove has a friction part. It provides a wooden pillar formed with a pre-cut joint, which is characterized in that it is provided.

And, Republic of Korea Patent Registration No. 10-1055418 (Challenge Korea Co., Ltd.) also relates to a wooden pillar, in a wooden pillar basic structure in which a wooden pillar (2) is installed and fixed on the ground (1); A concrete Hume pipe (3) that is buried in a pit (11) formed in the ground (1) so that its top protrudes from the ground, and a waterproof layer (7) is formed between the outer surface and the ground; It has an outer diameter smaller than the inner diameter of the concrete Hume pipe (3) and is inserted into the concrete Hume pipe (3). By means of a plurality of reinforcing bars (41) welded and fixed between the outer diameter and the inner diameter, the upper end is higher than the upper end of the concrete Hume pipe (3). A steel profile (4) that protrudes further toward the top and whose lower end is installed to be spaced apart from the lower end of the concrete Hume pipe (3); Concrete (5) filled and cured inside the concrete hume pipe (3) excluding the upper surface of the ground and the interior of the steel profile (4); It provides a wooden pillar basic structure, characterized in that it consists of a wooden pillar (2) whose lower end is inserted into the steel profile (4) and fixed by several fixing bolts (6).

However, these prior technologies cannot enhance the fire resistance of wooden pillars because they use wooden pillars processed from raw wood into pillar shapes.

Republic of Korea Patent Registration No. 10-2069534 (Jeonil Wood Industry Co., Ltd.) Republic of Korea Patent Registration No. 10-1055418 (Challenge Korea Co., Ltd.)

The present invention was created to solve the above-mentioned problems, and its purpose is to provide a fire-resistant wooden pillar with a multi-layer structure (multi-layer structure) made of different materials.

In particular, the purpose is to provide a fire-resistant wooden pillar integrally equipped with a flame retardant material on the inside.

The fire-resistant wooden pole of the present invention for achieving the above-described object includes a wooden pole of a predetermined width that is erected vertically; A flame retardant material installed on the outer surface of the wooden pole to shield the outer surface of the wooden pole; and a wooden exterior material attached to the outer surface of the flame retardant material and made of the same wood as the wooden pole so as to be carbonized in the event of a fire.

The present invention further includes a metal core installed in the center of the wooden pole.

The metal core is formed in a circular or triangular to octagonal polygonal shape and may be composed of a hollow metal tube having a cavity.

In the present invention, at least one of the wooden pole and the wooden exterior material is configured in a divided state, and is integrally installed on the outer peripheral surface of the metal core or the flame retardant material in a state that surrounds the outer peripheral surface of the metal core or the flame retardant material by coupling. It is characterized by...

At least one of the wooden pole and the wooden exterior material further includes a coupling means that binds portions of the divided parts to each other so that the divided parts (individual parts) are assembled into one body.

The coupling means is configured to form protrusions and protrusion grooves on both ends of the single product, respectively, so that as the protrusions are inserted into the protrusion grooves and coupled to each other, the flow of the individual products is suppressed and separation is prevented.

The wooden pole and the wooden exterior material are characterized in that they are flame retardant treated with a flame retardant material.

The flame retardant material is characterized in that it is composed of either a metal tube installed on the outer circumferential surface of the wooden pole, or a metal tube with a heat-resistant fabric attached to the outer circumferential surface and installed on the outer circumferential surface of the wooden pole.

The heat-resistant fabric is characterized by being composed of ceramic wool as a main ingredient.

The metal pipe is characterized in that a plurality of metal plates are installed on all sides to form a tube shape, or it is composed of a pair of angle plates bent around the wooden pole, and the angle plates are installed opposite each other to form a tube shape. Do this.

The method of manufacturing a fire-resistant wooden pillar according to the present invention is such that among the components of claim 1 consisting of the wooden pole, the flame retardant material, and the wooden exterior material, the wooden pole and the wooden exterior material are configured in a divided state. A plate manufacturing step of cutting logs for manufacturing wooden exterior materials and manufacturing them into plates; A plate flame retardant step of manufacturing a flame retardant treated plate by absorbing a flame retardant solution into the plate cut to form the wood pole and the wood exterior material; A member preparation step of separately preparing a metal core made of a metal tube constituting the flame retardant material and a metal hollow tube installed in the center of the wooden pole; A pole forming step of forming the wooden pole by installing each of the flame retardant treated plates constituting the wooden pole along the outer surface of the hollow pipe; A metal pipe installation step of installing the metal pipe on the outer surface of the wooden pole so that the outer surface of the wooden pole is shielded with metal; A heat-resistant fabric attachment step of attaching a heat-resistant fabric constituting the flame retardant material along the outer peripheral surface of the metal pipe; And an exterior material forming step of forming the wooden exterior material by attaching the flame retardant treated plates constituting the wooden exterior material along the outer side of the heat-resistant fabric, respectively.

The plate flame retardant step includes a vacuum step of removing moisture by vacuuming the plates manufactured in the plate manufacturing step with a vacuum tank; A vacuum release step of releasing the vacuum in the vacuum tank; A flame retardant exposure step of filling the inside of the vacuum tank with a flame retardant solution and immersing the plates in the flame retardant solution, or spraying the fire retardant solution on the plates and exposing them to the flame retardant solution; A plate pressurizing step of increasing the internal pressure of the vacuum tank with a pneumatic pump so that the plates exposed to the flame retardant liquid are absorbed into the plates; A depressurization step of depressurizing the vacuum tank; A sheet drying step of drying the sheets by heating them; and a sheet cooling step of cooling the sheets.

The member preparation step is characterized by preparing the hollow tube as a square tube and preparing a pair of angles so that the metal tube is formed in the shape of a square square tube.

The metal pipe installation step is characterized by installing the angles to form a square square pipe shape by attaching them to the outer peripheral surface of the wooden pole with the angles facing each other.

The heat-resistant fabric attachment step is characterized in that the heat-resistant fabric is attached to the outer surface of the metal tube composed of the angle with an adhesive.

The manufacturing method of the present invention further includes a both end processing step of forming protrusions and protrusion grooves on both ends of the plate, respectively.

As manufactured by the above-described manufacturing method, a square metal hollow tube is provided at the center of the inner side, a wooden pole made of a flame retardant plate is provided on the outer peripheral surface of the hollow tube, and a pair of angles are provided on the outer surface of the wooden pole. A rectangular metal tube made of is provided, a heat-resistant fabric is attached to the outer peripheral surface of the metal tube, and a fire-resistant wooden pillar is manufactured in which a wooden exterior material made of flame-retardant treated plates is provided on the outside of the heat-resistant fabric.

In the present invention as described above, the wooden exterior material and/or wooden poles are flame retardant treated to delay fire, and since they are not easily combusted by flame retardant materials (flame retardant liquid), the generation of toxic substances from combustion can be suppressed as much as possible, and ignition can be prevented. Even if it does, it is carbonized and forms a carbonized layer, which can prevent the spread of fire.

In particular, since a flame retardant material consisting of a metal pipe or a metal pipe with heat-resistant fabric attached is provided, the delay or spread of fire can be further suppressed or prevented.

Additionally, it delays the fire, suppresses the generation of toxic substances, and prevents the spread of the fire, making it possible to easily secure evacuation time or rescue time in the event of a fire.

In addition, since the metal core made of a metal tube, metal rod, or hollow metal tube is made of a highly corrosion-resistant alloy-plated steel sheet, heat resistance can be improved, carbonized wooden exterior materials or wooden poles can be prevented from peeling, and wood exterior materials or wooden poles can be prevented from peeling. Safety can also be improved because continuous support can be provided.

In addition, since the heat-resistant fabric is made of Cerakwool, storage and construction are easy, weight reduction is possible, and heat resistance can be further improved.

In addition, the wooden pole and wooden exterior material are made of eco-friendly wood, and are lighter than steel materials such as concrete or H-beam compared to the volume, which improves convenience in manufacturing and construction. It can be easily transported, providing excellent economic efficiency. Due to the elastic nature of wood, it can flexibly respond to earthquakes.

In addition, as the wooden pole is shielded with a metal pipe, low-cost wood with knots can be used, thereby reducing manufacturing costs.

In addition, flame retardancy and heat resistance can be further improved when flame coating is applied to the surface of the metal core, wooden pole, metal pipe, heat-resistant fabric, and/or wooden exterior material.

Moreover, the flame retardancy can be further improved as the wooden poles and wooden exterior materials are made up of panels and then treated and manufactured as flame retardants in a joined-up manner. In addition, the panels can be easily assembled as they are joined together through a coupling means consisting of protrusions and protrusion grooves. there is.

Figure 1 is a plan view showing the carbonization state of a typical wooden pillar.
Figure 2 is a perspective view of a fire-resistant wooden pillar according to an embodiment of the present invention;
Figure 3 is an exploded perspective view of the wooden pillar shown in Figure 2;
Figure 4 is a cross-sectional view taken along line AA of Figure 2;
Figure 5 is a cut-away perspective view showing the internal configuration of the wooden pillar shown in Figure 2;
Figure 6 is an exploded perspective view of the metal pipe shown in Figure 5;
Figure 7 is a perspective view of a fire-resistant wooden pillar according to another embodiment of the present invention;
Figure 8 is an exploded perspective view of the wooden pillar shown in Figure 7;
Figure 9 is a cross-sectional view taken along line AA of Figure 7;
Figure 10 is a cut-away perspective view showing the internal configuration of the wooden pillar shown in Figure 7;
Figure 11 is a half-sectional perspective view schematically showing the wooden pillar shown in Figure 7; and
Figure 12 is a process diagram conceptually showing the manufacturing process of the wooden pillar shown in Figures 2 and 7.

Hereinafter, a fire-resistant wooden pillar according to an embodiment of the present invention will be described with reference to the attached drawings.

The fire-resistant wooden pillar according to an embodiment of the present invention includes a wooden pole 20, a flame retardant material (I), and a wooden exterior material 50, as shown in FIGS. 2 and 3. The wooden pole 20 is made of wood with a predetermined width and length, as shown in FIGS. 3 and 5, and is erected vertically. The wooden pole 20 is preferably configured in a square bar shape as shown. The wooden pole 20 can be made of inexpensive wood as it is shielded with a metal pipe 30 of flame retardant material (I), as will be described later. For example, the wooden pole 20 may use wood with knots, which is cheaper than wood without knots. Alternatively, the wooden pole 20 may be made of processed wood such as regular laminated wood. Therefore, the wooden pole 20 can reduce manufacturing costs.

The flame retardant (I) is composed of a metal pipe 30 as shown in FIGS. 3 and 4. The metal pipe 30 is, for example, as shown in Figures 5 and 6, as a pair of bent angle plates 31 are installed facing each other around the wooden pole 20, as shown in Figures 2 and 4. As shown, it can be configured to form a square tube shape, or alternatively, it can be configured as a square tube in the form of a steel tube in which a plurality of metal plates are installed on all sides to form a tube shape. The metal tube 30 may be made of, for example, a highly corrosion-resistant alloy-plated steel sheet that is approximately five times better in fire resistance (heat resistance) and corrosion resistance than general galvanized steel or stainless steel. This steel plate is a metal plate plated with zinc, magnesium, and/or aluminum, and may be composed of, for example, “POSMAC” developed by POSCO.

The metal pipe 30 is installed on the outer surface of the wooden pole 20 to shield the outer surface of the wooden pole 20, thereby protecting the outer side of the wooden pole 20 from fire and providing vertical rigidity to the wooden pole 20. reinforce. The metal tube 30 may be attached to the wooden pole 20 through a conventional fastening member such as a conventional flame-retardant adhesive or bolt. Since this attachment method is a common method that can be easily understood by those skilled in the art, detailed description thereof will be omitted.

The heat-resistant fabric 40 may be attached to the outer surface of the metal tube 30 using the flame-retardant adhesive described above, as shown in FIGS. 5 and 8. The heat-resistant fabric 40 may be made of regular ceramic wool. Cerakwool is a high-temperature insulating material made from ceramic fibers and is also called ceramic wool. It is stored in roll form due to the flexibility of the fiber material. This Cerakwool is easy to work with due to its flexibility, which can shorten the working time, provides excellent insulation effect, and has a heat resistance of about 1,260 ℃ to 1,600 ℃ depending on the manufacturing method or mixing ingredients.

The wooden exterior material 50 is attached to the outer surface of the metal tube 30 or the outer surface of the metal tube 30 to which the heat-resistant fabric 40 is attached, as shown in FIGS. 3 and 5. The wooden exterior material 50 may be made of wood in the same way as the wooden pole 20.

The wooden exterior material 50 is composed of plate-shaped plates (PN) cut from raw wood as shown in (a) of FIG. 12, and the plates (PN) are flame retardant treated with a flame retardant solution through the process shown in 12. ) is composed of. The flame retardant treatment process for these plates (PN) is explained as follows.

For flame retardant treatment, the plate (PN) is cut from raw wood into a plate shape as shown in (a) of FIG. 12 and then placed in the vacuum tank (T) as shown in (b) of FIG. 12. And, moisture contained in the plate (PN) is removed as the vacuum tank (T) is evacuated by the vacuum pump (PM). Next, the plate (PN) is immersed in a flame retardant solution as a typical flame retardant solution for wood is filled in the vacuum tank (T), where moisture is removed and the vacuum is released, as shown in (c) of FIG. 12. Subsequently, the plate (PN) is pressurized by air pressure as the vacuum pump (PM) rotates in reverse or a pneumatic pump (e.g., compressor), not shown, operates to supply air to the inside of the vacuum tank (T). That is, the plate material PN is pressurized by pressure as the internal pressure of the vacuum tank T increases due to air supply. The plate (PN) absorbs the flame retardant liquid smoothly by applying pressure. This plate (PN) may be pressurized in the manner described above after the flame retardant solution is removed from the vacuum tank (T). At this time, the flame retardant solution is removed after a sufficient immersion time (e.g., 10 minutes to 24 hours) of the plate (PN) has elapsed.

In contrast, the plate PN may be coated with a flame retardant solution as the flame retardant solution is sprayed through a nozzle (not shown) installed inside the vacuum tank T. This plate (PN) is pressurized in the manner described above after the flame retardant solution is applied for a sufficient application time (e.g., 3 to 30 minutes).

Thereafter, the plate PN is dried by the heater H as shown in (d) of FIG. 12. At this time, the plate (PN) is dried inside the vacuum tank (T) for about 15 to 30 minutes with hot air at about 60°C to 70°C by the heater (H) built into the vacuum tank (T) as shown. Alternatively, it may be dried for the above-mentioned temperature and time in a separate heating furnace (not shown) equipped with a heater (H).

Next, the plate (PN) is slowly cooled inside the vacuum tank (T) to prevent distortion by slow cooling, and then left at room temperature to be further cooled as shown in (e) of FIG. 12. At this time, the plate (PN) is slowly cooled at room temperature for approximately 30 minutes to 3 hours.

Here, the above-described plate (PN) is vacuumed for about 10 to 15 minutes at a pressure of about 720 mmHg to 760 mmHg depending on the type (characteristics) of the wood. For example, if the plate (PN) is made of domestic oak with a dense texture, it is vacuumed at a pressure of about 760 mmHg for about 15 minutes, and if it is made of Capomo hardwood with many pores in the texture, it is vacuumed at a pressure of about 720 mmHg for about 10 minutes.

And, when the plate (PN) is pressurized, it is pressed for 10 to 15 minutes at a pressure of about 2 to 5 kg/cm ² . For plate material (PN), the pressure and pressing time can be adjusted or increased or decreased depending on the material, but when considering the material characteristics of the wood, the soaking time or application time, and the resulting absorption state, the above-mentioned pressure and time were the most efficient.

In conclusion, the wooden exterior material 50 is composed of a plurality of plates (PN) that have been treated as flame retardant as described above. As shown in FIGS. 4 and 5, this wooden exterior material 50 is composed of exterior panels 51 made of the above-described plates (PN). That is, the wooden exterior material 50 is composed of a plurality of exterior panels 51 and is thus divided.

As shown in Figures 4 and 5, the wooden exterior material 50 is integrated with the metal pipe 30 as exterior panels 51 are installed in all directions on the outer peripheral surface of the metal pipe 30 described above. When the above-mentioned heat-resistant fabric 40 is attached to the metal pipe 30, the wooden exterior material 50 is installed on the outside of the heat-resistant fabric 40 and forms an integral part with the metal pipe 30. The wooden exterior material 50 can be installed in an attached state using the heat-resistant adhesive described above. Accordingly, the wooden exterior material 50 is installed to surround all sides of the metal pipe 30 or the heat-resistant fabric 40 of the metal pipe 30.

The wooden exterior material 50 is provided with a coupling means that binds portions of the exterior panels 51 to each other and integrally joins the exterior panels 51 so that the exterior panels 51 forming individual pieces can be assembled. For example, as shown in FIGS. 4 and 5, the coupling means is formed by forming a projection (P) and a projection groove (G) on both ends of each exterior panel 51, respectively, and forming a projection (P) in the projection groove (G). As they are fitted and coupled, the movement of the exterior panels 51 is suppressed and separation can be prevented.

For this purpose, the above-described plate PN is formed with protrusions P and protrusion grooves G on both ends, respectively. The plate PN may have projections P and projection grooves G before proceeding with the flame retardant treatment process described above. In contrast, the plate PN may have projections P and projection grooves G after the flame retardant treatment process.

Meanwhile, since the above-described wooden pole 20 is composed of a wooden pole, it is preferable to be flame retardant treated like the exterior panel 51 of the above-described wooden exterior material 50. This wooden pole 20 is treated as flame retardant by the above-described flame retardant treatment process. In this way, the flame-retardant treated wood, that is, the wooden pole 20 or the exterior panel 51, was tested by the applicant of the present invention through the "Korea Fire Protection Society", and as it was treated with a flame retardant solution, the maximum temperature of the wood was approximately It took about 1,800 seconds to rise to 171℃. In the case of untreated wood, it took 270 seconds to rise to the maximum temperature of 627.2℃. Accordingly, it was confirmed that flame retardant treated wood delays the heat conduction time by about 6 times or more compared to untreated wood, and thus it was found to be significantly superior in flame retardancy to untreated wood.

The fire-resistant wooden pillar according to the embodiment of the present invention configured as described above has a wooden pole 20 installed in the center as shown in Figures 3 and 4, and a pair of angle plates on the outer surface of the wooden pole 20. The angle plates 31 of the flame retardant metal pipe 30 prepared at (31) are installed to face each other, and a wooden exterior material 50 composed of flame retardant treated exterior panels 51 is installed on the outer surface of the metal pipe 30. . Therefore, the embodiment of the present invention has a triple structure with an outer wooden exterior material 50, a middle metal tube 30, and an inner wooden pole 20.

In the event of a fire, combustion of such a wooden pillar is delayed by the flame-retardant treated wooden exterior material 50, and even if burned, the surface side of the wooden exterior material 50 is carbonized to form a carbonized layer to block heat transfer to the inside. In addition, the flame retardant metal pipe 30 made of highly corrosion-resistant steel prevents the peeling or removal of the carbonized wooden exterior material 50 and blocks heat transfer to the wooden pole 20. In addition, even if the wooden pole 20 is ignited inside the metal tube 30, combustion is delayed due to flame retardant treatment, and even if burned, the surface side is carbonized to form a carbonized layer, blocking heat transfer to the inside. That is, in the wooden pole according to the embodiment of the present invention, the wooden exterior material 50 blocks heat transfer firstly, the metal pipe 30 blocks heat transfer secondarily, and the carbonized layer of the wooden pole 20 blocks heat transfer thirdly. Block it. Accordingly, as shown in FIG. 1, the wooden pole 20 can continuously support the upper part since the central part is not burned as much as possible. Accordingly, collapse of structures such as buildings and bridges is suppressed or prevented.

On the other hand, when the heat-resistant fabric 40 described above is attached to the outer surface of the metal pipe 30, the heat resistance of the wooden pillar is further strengthened because the heat-resistant fabric 40 additionally blocks heat transfer.

On the other hand, the wooden pole 20 may be provided with a metal core 10 at the inner center as shown in FIGS. 7 to 11. The metal core 10 may be made of a metal hollow tube or metal rod formed in a circular or triangular to octagonal polygon shape, and is preferably made of a square hollow tube as shown in FIG. 8. It is more preferable that this metal core 10 is made of the same material as the metal tube 30 described above.

When the wooden pole 20 is provided with a metal core 10 in the center, as shown in FIGS. 8 and 9, the wooden pole 20 is configured to be assembled in a divided state like the exterior panel 51 of the wooden exterior material 50 described above. It is treated as flame retardant. Accordingly, the wooden pole 20 is composed of a plurality of interior panels 21 configured in the same way as the exterior panels 51 described above, and as shown, protrusions P and A protruding groove (G) is provided. Accordingly, the wooden pole 20 is assembled in a square shape on the outer surface of the metal core 10 by combining the projections P and the projection grooves G provided on the interior panel 21, as shown. That is, the interior panels 21 are installed along the outer surface of the metal core 10 prepared as a square pipe. At this time, the interior panels 21 may be attached to the outer surface of the metal core 10 using a heat-resistant adhesive as described above.

The wooden pole 20 has interior panels 21 that block heat conducted from the metal tube 30, and even if the interior panel 21 is ignited, it forms a carbonized layer as described above, thereby continuously blocking heat. In addition, the metal core 10 supports the interior panels 21 and prevents the interior panels 21 from being peeled off or removed when the interior panels 21 are carbonized. That is, the wooden pillar provided with the metal core 10 includes an exterior panel 51, a heat-resistant fabric 40, a metal pipe 30, an interior panel 21, and a metal core ( 10), it forms a five-layer structure and blocks fire five times. Accordingly, the wooden pole can support the axial load more stably by the wooden pole 20 composed of the interior panel 21 and the metal core 10 provided in the center of the wooden pole 20.

Meanwhile, the above-described heat-resistant fabric 40 may be attached to the metal core 10 described above. In addition, the above-described metal core 10, wooden pole 20, metal tube 30, heat-resistant fabric 40, and/or wooden exterior material 50 may have a normal flame coating applied to their surfaces. In this case, the flame retardancy or heat resistance of the wooden pillar is further strengthened because the heat-resistant fabric 40 and/or flame paint additionally blocks heat.

Here, the internal temperatures of flame retardant treated wood treated with a flame retardant solution and non-flame retardant treated wood were exposed for 30 minutes in a horizontal heating furnace through the Korea Fire Protection Society. At this time, the flame retardant treated wood sample was applied by simply applying the flame retardant solution to the surface of the wood. As a result of the test, 431.8℃ was measured for untreated wood, and 400.5℃ was measured for spray-treated wood. Therefore, it was found that the spray-treated wood had better fire resistance than the untreated wood.

In contrast, treated wood was prepared using the pressure method described above and exposed for 60 minutes under the same conditions. As a result of the test, 627.2℃ was measured for untreated wood, and 171.1℃ was measured for spray-treated wood. Therefore, it was confirmed that the pressure-treated wood showed overwhelmingly better heat resistance than the applied wood.

In the embodiment of the present invention as described above, the wooden exterior material 50 and/or the wooden pole 20 are flame retardant treated to delay fire, and are not easily burned by flame retardant material (flame retardant liquid), thereby generating toxic substances from combustion. It can be suppressed as much as possible, and even if ignited, it is carbonized to form a carbonized layer, preventing the fire from spreading.

In particular, since the flame retardant material (I) consisting of a metal pipe 30 or a metal pipe 30 with heat-resistant fabric 40 attached is provided, the delay or spread of fire can be further suppressed or prevented.

Additionally, it delays the fire, suppresses the generation of toxic substances, and prevents the spread of the fire, making it possible to easily secure evacuation time or rescue time in the event of a fire.

In addition, since the metal core 10, which is made of a metal tube 30, a metal rod, or a hollow metal tube, is made of a highly corrosion-resistant alloy-plated steel sheet, heat resistance can be improved, and the carbonized wooden exterior material 50 or the wooden pole 20 can be peeled off. This can prevent it from happening, and it can also improve safety because it can continuously provide support to the wooden exterior material 50 or the wooden pole 20.

In addition, since the heat-resistant fabric 40 is made of ceramic wool, storage and construction are easy, and heat resistance can be further improved.

In addition, the wooden pole 20 and the wooden exterior material 50 are made of eco-friendly wood, and are lighter than steel materials such as concrete or H beam compared to the volume, so convenience in manufacturing and construction can be improved, and it can be easily transported. It provides excellent economic efficiency and can flexibly respond to earthquakes due to the elastic properties of wood.

In addition, since the wooden pole 20 is shielded by the metal tube 30, low-cost wood with knots can be used, thereby reducing manufacturing costs.

In addition, flame retardancy and heat resistance can be further improved when flame coating is applied to the surfaces of the metal core 10, wooden pole 20, metal pipe 30, heat-resistant fabric 40, and/or wooden exterior material 50. .

Since the above-described embodiments only describe preferred embodiments of the present invention, the scope of application of the present invention is not limited to this, and if the essential features can be satisfied, appropriate modifications (structure or configuration) can be made within the scope of the same idea. Changes, partial omissions, or supplements) are possible. Additionally, some or many of the features of the above-described embodiments may be combined with each other. Accordingly, since the structure and configuration of each component shown in the embodiments of the present invention can be implemented by modification or combination, it is natural that modifications or combinations of such structures and configurations fall within the scope of the appended claims of the present invention.

10: metal core 20: wooden pole
21: Interior panel 30: Metal pipe
31: Angle plate 40: Heat-resistant fabric
50: Wooden exterior material 51: Exterior panel
H: Heater I: Flame retardant
P: Protrusion PN: Plate
PM: pump T: vacuum tank

Claims (6)

A metal core (10) composed of a hollow tubular body and installed vertically;
A wooden pole (20) mounted vertically on the outer peripheral surface of the metal core (10) and surrounding the outside of the metal core (10) so that the metal core (10) is installed at the center;
Flame retardant material (I) installed on the outer surface of the wooden pole (20) to shield the outer surface of the wooden pole (20); and
A wooden exterior material (50) attached to the outer surface of the flame retardant (I) and made of the same wood as the wooden pole (20) so as to be carbonized in the event of a fire;
At least one of the wooden pole 20 and the wooden exterior material 50 is configured in a divided state and is combined to surround the outer peripheral surface of the metal core 10 or the flame retardant material (I). ) or is installed integrally on the outer peripheral surface of the flame retardant (I),
The flame retardant (I) is,
It consists of a metal tube 30 installed on the outer peripheral surface of the wooden pole 20 and surrounding the wooden pole 20, and a heat-resistant fabric 40 attached to the outer peripheral surface of the metal tube 30, forming the outer peripheral surface of the wooden pole 20. It is characterized by consisting of a heat-resistant fabric attached metal pipe (40, 30) installed in,
The wooden pole (20) is,
As it is integrally installed on the outer peripheral surface of the metal core 10, it is integrated with the metal core 10 and supports an axial load through the metal core 10,
The metal tube 30 is,
It is installed on the outer peripheral surface of the wooden pole (20) in a state that surrounds the outer side of the wooden pole (20) to protect the outer side of the wooden pole (20) from fire and reinforce the vertical rigidity of the wooden pole (20),
The heat-resistant fabric 40 is,
It is attached to the outer circumferential surface of the metal tube 30 surrounding the outside of the wooden pole 20 to block heat transfer by fire, thereby strengthening heat resistance,
The wooden exterior material 50 is,
It is attached to the outside of the flame retardant (I) composed of the heat-resistant fabric attached metal tubes (40, 30) and is integrated with the heat-resistant fabric attached metal tube (40, 30) of the flame retardant (I),
The metal core 10 or the metal tube 30 is characterized in that it is made of an alloy-plated steel sheet with high fire resistance and high corrosion resistance by mixing at least one of zinc and magnesium or aluminum into a steel sheet,
The heat-resistant fabric 40 is,
Characterized by being made of ceramic wool made of heat-resistant ceramic fiber and attached to the outer peripheral surface of the metal pipe 30 to insulate and protect the surface of the metal pipe 30 from the heat of the fire,
The metal core 10, the wooden pole 20, the metal tube 30, the heat-resistant fabric, and the wooden exterior material 50 are sequentially overlapped from the inside to the outside, and adjacent overlapping configurations are different from each other. A fire-resistant wooden pillar characterized by a five-layer structure from the outside to the inside, as it is made of materials that provide an overlapping structure. delete delete delete delete delete

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