KR100374995B1 - Open-joint structure of an external wall and the construction method of the same - Google Patents

Abstract

The present invention relates to an outer wall open joint structure and a construction method for installing various exterior plate materials on the outer wall of a building in a curtain wall structure, and more specifically, the outer wall open joint structure includes a plurality of vertical members (110). Are arranged at regular intervals and are connected to the slab 10 which is a building structure, and a plurality of horizontal members 120 are arranged at regular intervals on the vertical member 110 to form a curtain wall-based steel structure as a whole. 100; It is installed by connecting the fasteners 30 for masonry to the horizontal member 120 of the curtain wall based steel structure 100, a plurality of them are installed in a regular arrangement to form a joint 210 and the exterior plate material (representing the exterior of the building) 200); And a water shield 300 installed in the entire interior of the building wall of the curtain wall-based steel structure 100; It is formed to include.

In the curtain wall structure, the outer wall open joint method keeps the joints between the exterior panels without opening the caulking and closes them. By preserving and opening the exterior joint without sealing the joint, it is possible to smoothly flow the air to solve the excessive heat storage in the space between the outer wall finishing material and the building structure in the prior art to eliminate the waste of unnecessary cooling energy.

Description

Open-joint structure of an external wall and the construction method of the same}

The present invention relates to an outer wall open joint structure and its construction method for installing various exterior plate materials on the outer wall of a building using an open joint method using a curtain wall base steel structure, and the open joint method is a dry wall method. In order to close the joint between the plate and the plate used as finishing, air is not opened but closed by coking or other materials, and the air can be communicated. Collectively.

In the conventional exterior wall finishing method, the solution of the joint is closed as shown in FIG. 1 by sealing the joint between the exterior plate (building stone plate) and the plate with silicon caulking, and installing insulation to the interior of the building. To do this, a back panel, ie, a thin iron plate for blocking the interior side of the structure, was used, and a heat insulating material such as rock wool or glass wool was constructed thereon. This conventional curtain wall finish has the following problems in terms of building exterior and insulation performance.

First of all, in terms of building exterior, joint coking plays an important role in preventing rainwater from seeping in and blocking the inflow of external air.However, this coking is a kind of petroleum compound. Due to the change in physical properties, the oil component flows out to the surface of the finishing plate around the joint, and there is a serious defect that damages the exterior of the building due to dust and dirt adhering to the oil-exuded part and contaminates the exterior of the building several years after the completion of the building. Has become a major cause. In particular, metal finishes such as aluminum honeycomb panels (AL-Honey Comb Panels) tend to be more polluted faster and worse than granite finishes, because when exposed to direct sunlight, the surface temperature of metals, unlike stones, As it rises above 100 degrees Celsius, coking deterioration occurs more quickly than when finished with granite, thus causing pollution faster. In addition, since the coking in the conventional dry curtain moon method completely seals the joint, the temperature of the enclosed space (approximately 250 mm) between the outer wall finishing plate and the inner insulation is raised to 70 to 80 degrees like the interior of a car exposed to direct sunlight in summer. The building has the effect of covering a thick blanket in the summer, and this hot heat causes performance degradation due to the aging of coking and waste of unnecessary cooling energy.

The open joint method is a so-called breathing exterior wall, eliminating many of the closures of the existing method. For this reason, in the academic world and in the industry for a long time, the open joint method without caulking, that is, between the exterior plates is opened without coking, so the exterior board (stone board) only plays the role of finishing material, By creating a separate barrier wall to block rainwater and outside air, a new method has emerged to keep the beautiful appearance of the construction clean and permanently. There was a problem of corrosion, which has not been practically used in Korea.

In addition, in terms of insulation performance, in order to install insulation in the existing method as shown in FIG. 1, a thin iron plate is widely used as a back panel of a curtain wall structure, but a structure is installed between the slab end and the curtain wall structure on which the foundation film is installed. It is a part through which brackets and a lot of bracing steel are penetrated, and most of the end beams are so close that even a worker's hand can't easily enter the base film according to the existing method. I could not stop the flow tightly. In addition to the problems of the back panel for insulation, there was a big problem in the construction quality of the heat insulating material which is a subsequent process. In general, the coefficients of thermal insulation and thermal permeability, the selection criteria for all currently insulated materials, differ considerably from the values measured under the assumption and condition that there is no air flow on both sides of the insulation, or the actual conditions and environment of the site where they are installed. First, as described above, the back panel is not tightly blocked, and the heat insulating material installed thereafter is mostly made of fiber through which air flows as rock wool or glass wool. Of course, most of the back side is made of foil, but many obstacles and many seams of seams, even if the sealing of the foil foil is difficult to expect the perfect kick function because the narrow space and the foil itself is easily torn. Among the various factors that hinder the adiabatic performance, heat loss due to convection through the gap is the largest, accounting for 70 to 80%. Moreover, the insulation is installed at the point where numerous steel brackets or reinforcing bracings are used to fix the building structure and the outer wall structure, and this part corresponds to the ceiling part (interlayer fire break point). There are many less gaps, and therefore, the ceiling is a space that is not heated and has poor insulation performance.In particular, at night when the heating is stopped in winter, the temperature inside the ceiling drops below zero, which causes frequent defects such as freezing of pipes such as sprinklers. . In addition, since the air conditioning system of most commercial buildings currently adopts a forced exhaust method, the indoor air pressure is artificially lowered than the outdoor air pressure, so that the ox wind comes in at a high flow rate as a poor part of the screen. Has serious consequences. The biggest determinant of the building's insulation performance depends on how tightly it blocks air flow, rather than its insulation coefficient or thickness.

The open joint structure of the present invention solves the problems of the existing exterior wall finishing method, so that the exterior plate (stone plate) is opened without need for coking, so that the exterior plate only plays a role as a finishing material and separates therein. By creating a barrier wall to block rainwater and outside air, the clean and beautiful appearance of the construction is preserved forever.

It is an object of the present invention to provide an exterior wall open joint structure that eliminates the coking work performed on the exterior plate joint part to keep the building exterior walls clean and permanently clean.

Another object of the present invention is to open the exterior joint without sealing the joint portion to enable a smooth air flow by eliminating the excessive heat storage in the space between the exterior wall finishing material and the building structure in the prior art to eliminate the excessive cooling energy waste in summer It is to provide an open joint structure.

Yet another object of the present invention is to provide an outer wall open joint structure that can increase insulation performance by providing a compact and easy-to-install membrane to prevent insulation from being closed intently due to the characteristics of the curtain wall structure. .

1 is a cross-sectional view of a conventional curtain wall outer wall finishing method.

2 is a cross-sectional view of the curtain wall outer wall open joint structure of the present invention.

3 is a perspective view of the curtain wall-based steel structure assembly embodiment of FIG.

FIG. 4A is a partial enlarged view of FIG. 2 and is a sectional view of mounting a curtain wall fastener, and FIG. 4B is a sectional view of another embodiment of a curtain wall fastener.

FIG. 5A is a partially enlarged view of the masonry fastener, and FIG. 5B is a sectional view of another embodiment of the masonry fastener.

<Description of Major Codes in Drawings>

10: slab 20: fasteners for fixing curtain walls

21: anchor bar 22: support angle

23: leveling angle 24: support plate

25: Level Adjuster 30: Mason's Fastener

31: angle 32: plate

33: pin 35: T-shaped anchor

35a: web 35b: flange

36: pad

100: curtain wall base steel structure (not shown)

110: vertical member 120: horizontal member

121: reinforcing steel plate for bolted joint 200: exterior plate material

210: joint 300: curtain

310: iron plate 320: rigid urethane foam

330: weatherproof waterproof rubber plate

The present invention will be described with reference to the drawings.

Figure 2 is a cross-sectional view of the curtain wall outer wall open joint structure of the present invention, the open joint structure is hot-dip galvanized after cutting and a plurality of vertical members 110 of hollow square pipe shape are arranged at regular intervals It is connected to the slab 10 which is a building structure by bolting to the curtain wall fixing fastener 20, and after cutting, a plurality of horizontal members 120 having a hot dip galvanized and L-shaped shape are bolted to each other. Curtain wall-based steel structure 100 is arranged at regular intervals on the vertical member 110, which becomes a grid-like overall; An exterior plate member 200 which is installed by connecting a mason's fastener 30 to the horizontal member 120 of the steel structure 100 and is installed in a regular arrangement to form a joint 210 and represents a building exterior; And a shield 300 installed in the entire interior of the building structure of the steel structure 100; It is formed to include.

The open joint structure itself, which is the main object of the present invention, is a method that has already been used in theory, and in the course of the development of modern architecture, the variety of exterior wall finishing methods is required and individualized and developed into a plate assembly method. Exterior panel finishing method is to seal the plate joint by caulking. This allows the finishing board itself to be dedicated to all functions as weatherproof outer walls.

On the other hand, the open joint method is a method in which the joint is open so that the finishing board only plays a role as the finishing material. The open joint method is based on the premise that rainwater can enter the walls through open gaps. In order to satisfy these preconditions, it is possible to realize only when the corrosion resistance is secured first due to rainwater and condensation. In order to meet such conditions, most open joint methods have been successfully realized only in limited sites where base walls are constructed with concrete retaining walls. As a result, large-scale high-rise buildings are mostly steel-framed buildings and open-wall joints, which are advanced construction methods, have not been widely used because the outer walls are dry curtain wall steel structures with poor corrosion resistance. In order to completely prevent corrosion problems of the steel structure, which is the biggest problem of all external steel truss methods, it is essential to not weld after hot-dip galvanizing and plating all the members of the truss. Since the whole welded large truss must be hot-dip galvanized, the heat deformation of the truss is severely distorted due to high heat when the welding stress remaining in many welding parts is immersed in the plating furnace. In addition, many additional welding is required in the field construction, so hot dip galvanizing has not been possible to achieve its original purpose.

In order to solve this problem, the inventors of the present invention registered patent No. 227574 (prefabricated method of steel truss for dry masonry), patent application No. 99-20896 (prefabricated stone curtain wall method), and patent application No. 2000-11068 (mason) Fasteners) and patent application No. 2000-36042 (curtain wall fixing fasteners and curtain wall fixing method using them), etc. unlike conventional methods, all vertical and horizontal members are separately plated and designed to be joined to the site. Related technologies have been integrated, and the open joint method is now possible, where the complete corrosion resistance of the base steel structure is a prerequisite.

The curtain wall backing steel structure (100, Curtainwall Back Structure) is a base for the open joint method of the present invention, each member (vertical member, horizontally plated with hot-dip galvanized so that corrosion does not occur due to the penetration of rainwater, etc.) Member, curtain wall fixing fastener, mason's fastener, etc.) is formed only by the assembly work without on-site welding, and briefly describes the installation of the steel structure 100 and the exterior plate 200 based on the prior art contents of the present inventors. Is as follows.

3 is a perspective view of an example of assembly of the curtain wall base steel structure 100 of the present invention, the vertical member 110 is only a hole for fastening bolts and then immersed in a molten zinc furnace (爐) to the inside of the square pipe After fully plated, the horizontal member 120 is also welded by adding a plate-shaped reinforcing iron plate 121 having a plurality of bolt holes at both ends, and then hot-dip galvanized and galvanized bolts up and down Tighten two or more places. The bolt used is made to twist the screw only to the minimum portion to which the nut is fastened and the remaining portion to maintain the round bar state to reduce the possibility of wear due to the load and fine vibration of the exterior plate 200. In addition, all bolts must be fitted with spring washers in order to prevent loosening of the bolts due to various vibrations such as the vibration of the elevator or driving of earthquakes.

FIG. 4A is a partially enlarged view of the curtain wall fixing fastener 20, and the curtain wall fixing fastener 20 fixing the vertical member 110 to the slab 10 as a building structure. In order to fix the conventional slotted hole without the need for on-site welding, it is possible to fix only. In order to fix the vertical member 110 with the upper surface of the slab as shown in FIG. 4a, the curtain wall fixing fastener 20 is In order to fix the vertical member 110 and the slab end side as shown in FIG. 4b as another example of the installation of the curtain wall fixing fastener 20, it is configured to include a level adjuster 25 and the support plate 24 The curtain wall fixing fastener 20 includes an anchor bar 21, a support angle 22, a level adjustment angle 23, and a support plate 24. All members constituting such curtain wall fasteners are also hot dip galvanized.

FIG. 5A is also a partial enlarged view of FIG. 2 as a cross-sectional view of the mason's fastener 30, wherein the mason's fastener 30 has an angle 31, a plate 32, and a pin 33 as shown in FIG. It is configured to include a) to fix the angle 31 to the horizontal member 120 with a bolt, to fix the plate 32 to the angle with the bolt and the pin 33 at the end of the plate 32 By installing the outer plate member 200 previously grooved in the pin 33 is inserted into the upper and lower portions so that the steel structure 100 and the outer plate member 200 is coupled or the mason's fastener 30 5b includes a T-shaped anchor 35 and a shim pad 36 to form a web 35a and a shim pad 36 of the T-shaped anchor 35 on the horizontal member 120. The exterior plate member 200 which is fixed with a bolt and grooved in advance in the flange 35b of the T-shaped anchor 35 is inserted into the upper and lower parts thereof. The steel structure 100 and the exterior plate 200 may be combined. One anchor 35 is installed between the upper and lower two outer plate material to support the load of the upper outer plate material, and prevent the fall due to the lateral force of the lower outer plate material. A shim pad 36 is installed between the truss horizontal member 120 and the anchor 35 to adjust the level of the anchor 35. The shim pad 36 adjusts the level of the anchor 35 as well as prevents the anchor 35 and the truss horizontal member 120 from sliding while being tightened by a bolt, and is formed of a low thermal conductive plastic. It is advantageous in heat insulation by preventing thermal bridge phenomenon. The joint 210 appearing on the outer surface of the building is provided between the upper, lower, or left and right exterior panel members 200 when the exterior board member 200 is installed on the steel structure 100 using the fastener 30 for masonry as described above. It naturally forms.

Since the open wall structure of the outer wall is a complete bolt assembly method, field welding is not required at all, which brings a number of advantages. First of all, it was the practice of overdesigning the used member as a standard to prevent corrosion due to the prevention of corrosion. However, the optimum design is possible, so that the amount of steel member can be reduced and the fixed load can be reduced. In addition, since the corrosion of the member due to condensation is prevented at the source, it is possible to prevent the repair of the exterior wall due to the occurrence of structural safety accidents, such as the fall of the exterior plate (stone plate), which may occur in the future. The lifespan of the system is long and as a result, it is a very economical process. In addition, since the site construction is completely bolted, it is relatively simpler than the existing method, which requires on-site welding. Therefore, skilled workers are not required. There is no change and, consequently, the effect of saving the electric energy due to on-site welding can be greatly reduced.

The lining film 300 is installed on the entire interior of the building structure of the steel structure 100, and consists of a thin iron plate 310 and the rigid urethane foam 320 of the field spray foam applied on the iron plate 310. Since the function of the barrier 300 is a very important element for forming an isostatic environment, which is a function (order, kick) and the basis of the open joint method to prevent rainstorm, it must be formed tightly so that there is no gap, and the barrier is itself an outer wall. Sufficient external wall insulation should be ensured.

As mentioned in the above-mentioned problems of the prior art, in the conventional curtain wall method, a thin iron plate is used as a back panel and a heat insulating material is installed thereon to install the insulation, but the back panel of the curtain wall structure is the slab end portion. Between the wall and the curtain wall structure, where the brackets for the installation of the structure and many bracing beams are penetrated, and most of the end beams are so close that the space is small enough for the operator's hand to easily enter. Due to the existing method, the foundation membrane alone could not be closed tightly, and a large amount of outside wind enters into the small gaps, and the problem of the insulated back panel for such insulation is the construction quality of the insulation material, which is a subsequent process. Have a greater effect on the air, most often rock wool or glass wool. In its performance, thereby significantly lowering the heat insulating material.

Thus, the open joint structure of the present invention is to apply a rigid urethane foam 320 in the form of field spray foam so as to be suitable to secure the next function required instead of the heat insulating material on the existing fibrous. (2 component type) urethane foam 320 is a high viscosity liquid, sprayed and sprayed at about 30 times the volume at the same time the spray effectively prevents all gaps seamlessly, the characteristics of the urethane foam 320 is tightly kicked In addition, it can expect a more perfect insulation effect. In addition, urethane foam 320 has been developed as a flame retardant of several grades.

In addition, the iron plate 310 of the present invention is installed to be selected from the electro-galvanized steel sheet (EGI) or hot-dip galvanized steel sheet (GI) to favor the interlayer fireproof structure. In the case of more than 3 floors, each floor should be divided into fire protection zones. In the existing method, electro galvanized steel (EGI plate) is mainly used for the back panel fire prevention, and the thickness is 1.0∼1.2mm. The main steel plate is made of 1.6mm, the thickness of the steel plate, which is the fireproof compartment standard. Electro-galvanized steel sheet (EGI plate) is used to improve adhesion during paint coating, and has a rough surface and electro-galvanized, so that the plating thickness is as thin as 17 to 20 μm. On the other hand, hot-dip galvanized steel sheet (GI plate) is hot-dip galvanized and the plating thickness is 30 ~ 35㎛ more suitable than electro-galvanized steel sheet (EGI plate) to secure corrosion resistance for the use of the liner film.

In addition, an area where independent behavior such as expansion joints for absorbing interlayer displacement of the steel structure 100 itself and around a window system may occur, the thin iron plate 310 may be considered in such a way that the following function is not deteriorated from the occurrence of a gap. ) Install the weatherproof waterproof rubber plate 330 on the top and foam the urethane foam (320). As the various components of the open joint method such as the interlayer displacement of the structure constituting the outer wall, the windows and the curtains, and the like may have their own individual behaviors, gaps between heterogeneous materials inevitably occur. The most important thing is that the order curtain should be designed as a control joint that can maintain its order function invariably. Therefore, the part where independent behavior can occur is thin plate (310) so that the next function does not deteriorate from the occurrence of the gap. ) Install the weatherproof waterproof rubber plate 330 on the top and foam the urethane foam (320).

The weather resistant waterproof rubber plate 330 uses EPDM (Ethylene Propylene Diene Monomer) sheet. EPDM sheet is a vulcanized rubber sheet, which is the most excellent weather resistant material among various waterproof sheets, and is suitable as a control joint material because of its excellent ductility.

The open joint structure is constructed in the following steps.

A first step of fixing the vertical member 110 to the slab 10 as a building structure by using the curtain wall fastener 20; A second step of completing the curtain wall-based steel structure 100 by fixing the horizontal member 120 to which the bolt joining reinforcing steel plate 121 of claim 8 is attached to the vertical member 110; A third step of forming an open joint using a fastener 30 for masonry on the horizontal member 120 of the curtain wall based steel structure 100 and attaching the exterior plate 200; A fourth step of attaching the iron plate 310 by selecting any one of an electro galvanized steel sheet (EGI) or a hot dip galvanized steel sheet (GI) on the entire interior of the building wall of the curtain wall steel structure 100; And a fifth step of installing the rigid urethane foam 320 in a spray foam form on the iron plate 310. In the fourth step, the expansion joint, which may cause an independent behavior of some parts of the steel structure 100, and installs a weather-resistant waterproof rubber plate 330 on the iron plate 310 and further urethane foam The construction is 320.

The outer wall open joint structure of the present invention eliminates the caulking work carried out on the joint portion of the outer plate material so that the outer wall of the building is kept clean and permanently clean.

In addition, the outer wall open joint structure of the present invention can open the joint portion without sealing the air flow to enable a smooth air flow to solve the excessive heat storage in the space between the outer wall finishing material and the building structure conventionally can eliminate the excessive cooling energy waste.

In addition, the outer wall open joint structure of the present invention can improve the insulation performance by providing a compact and easy-to-contain ordered membrane to prevent the air from being closed tightly due to the characteristics of the curtain wall structure.

Claims (10)

After cutting, hot dip galvanized and a plurality of vertical members 110 having a hollow angular pipe shape are arranged at regular intervals to be connected to the slab 10, which is a building structure, by bolt coupling with the fastener 20 for fixing the curtain wall. After the cutting process, hot dip galvanized and a plurality of horizontal members 120 having an L-shaped shape are arranged at regular intervals on the vertical members 110 by bolting, and thus curtain wall-based steel which becomes a lattice shape as a whole. Structure 100; It is installed by connecting the fasteners 30 for masonry to the horizontal member 120 of the curtain wall based steel structure 100, a plurality of them are installed in a regular arrangement to form a joint 210 and the exterior plate material (representing the exterior of the building) 200); And, The curtain wall 300 is installed on the entire interior of the building wall side of the steel structure 100; Open joint structure of the outer wall, characterized in that it is formed, including. According to claim 1, wherein the membrane 300 is a thin iron plate 310 is installed on the curtain wall based steel structure 100 and the rigid urethane foam 320 of the field spray foam is applied on the iron plate 310 Open joint structure of the outer wall, characterized in that the configuration. In claim 2, the expansion joint and the window around the window and the expansion joint that can cause independent behavior of a part of the curtain wall base steel structure 100 is further installed on the thin steel plate 310, the weather-resistant waterproof rubber plate 330 and urethane foam Open joint structure of the outer wall, characterized in that for foaming (320). [4] The open joint structure of the outer wall of claim 2 or 3, wherein the thin iron plate 310 is selected and installed from an electrogalvanized steel sheet (EGI) or a hot dip galvanized steel sheet (GI). 4. The open joint structure of the outer wall of claim 3, wherein the weatherproof waterproof rubber plate 330 uses an EPDM sheet. The fastening wall 20 for fastening the curtain wall is configured to include an anchor bar 21, a support angle 22, a level adjustment angle 23, and a support plate 24 to define the vertical member 110. Open joint structure of the outer wall, characterized in that it is fixed in connection with the end surface of the slab or comprises a level adjuster 25 and the support plate 24 to connect the vertical member 110 and the upper surface of the slab for fixing. . According to claim 1, wherein the horizontal member 120 is an open joint structure of the outer wall, characterized in that the hot-dip galvanized after welding by adding a plate-shaped bolted reinforcing iron plate 121 having a plurality of bolt holes at both ends. . The fastener 30 for masonry comprises an angle 31, a plate 32, and a pin 33 to fix the angle 31 to the horizontal member 120 with bolts. The plate 32 is bolted to the angle and the pin 33 is installed at the end of the plate 32 so that the outer plate 200, which is previously grooved in the pin 33, is moved up and down. Inserted to allow the curtain wall-based steel structure 100 and the outer plate 200 is coupled or the mason fastener 30 comprises a T-shaped anchor 35, the shim pad 36 is the horizontal The outer plate member which secures the web 35a and the shim pad 36 of the T-shaped anchor 35 to the member 120 with bolts and is previously grooved in the flange 35b of the T-shaped anchor 35. 200 is inserted into the upper and lower portions of the outer wall, characterized in that the curtain wall based steel structure 100 and the outer plate 200 is coupled to Peun joint structure. A first step of fixing the vertical member 110 to the slab 10 as a building structure by using the curtain wall fastener 20; A second step of completing the curtain wall-based steel structure 100 by fixing the horizontal member 120 to which the bolt joining reinforcing steel plate 121 of claim 8 is attached to the vertical member 110; A third step of forming an open joint using a fastener 30 for masonry on the horizontal member 120 of the curtain wall based steel structure 100 and attaching the exterior plate 200; A fourth step of attaching the iron plate 310 by selecting any one of an electro galvanized steel sheet (EGI) or a hot dip galvanized steel sheet (GI) on the entire interior of the building wall of the curtain wall steel structure 100; And, A fifth step of installing a rigid urethane foam 320 in a spray foam form on the iron plate 310; Exterior wall open joint construction method comprising a. The weatherproof waterproofing rubber plate 330 is further provided on the steel plate 310 around the expansion joint and the window that may cause independent movement of a part of the curtain wall based steel structure 100 in the fourth step. Exterior wall open joint construction method comprising the step of installing.