JP5570737B2 - Construction method for earthquake-resistant concrete blocks and earthquake-resistant walls with built-in light-transmissive members with high compressive strength - Google Patents

Description

  The present invention relates to a seismic concrete block and a seismic wall construction method.

  In particular, the present invention is such that a light transmitting member having a high compressive strength supports the force, that is, the light transmitting member having a high compressive strength becomes a partial structural material of the structural wall, and the light having the high compressive strength is used. When a force is applied to the transmissive member, the high compressive strength light transmissive member is made of concrete so that the cross section of the high compressive strength light transmissive member is not lost due to its brittleness and the proof strength as a structural wall is not reduced. The present invention relates to a seismic concrete block molded to be built in and a method for constructing a seismic wall using the same.

  For the purpose of seismic reinforcement of buildings made of reinforced concrete or steel-framed reinforced concrete, the building may be reinforced by newly installing reinforced concrete seismic walls in the frame structure composed of columns and beams.

  In order to increase the above-mentioned seismic walls, it is common practice to place reinforcements at the site, install formwork, and place concrete. However, this method of placing reinforcements, formwork and concrete on site is time consuming and it is difficult to complete the construction in a short period of time while using the building.

  On the other hand, in order to reduce the work at the site, a method of building a seismic wall by stacking concrete blocks manufactured at the factory on site instead of the above-described concrete placement method has been proposed. (For example, Japanese Patent Publication No. 57-012832).

  By the way, both of the concrete placement method and the concrete block stacking method in the above-mentioned field can increase the strength when a new seismic wall is installed in the ramen frame of an existing building. Since it is advantageous, it often blocks the entire opening of an existing building. However, if the entire surface of the opening is closed, the daylighting of the subsequent building becomes a problem.

  In consideration of the usability of the building and the convenience of use, it is desirable to improve the daylighting by partially opening the seismic wall. In consideration of daylighting, methods have been proposed for constructing additional earthquake-resistant walls with openings, such as a method of laminating concrete blocks with openings or a method of laminating polygonal concrete blocks to create openings. (Japanese Patent No. 3842865, Japanese Patent Application Laid-Open No. 2007-162255, Japanese Patent Application Laid-Open No. 2007-146447, Japanese Patent Application Laid-Open No. 2007-146448, Japanese Patent Application Laid-Open No. 2007-197937).

  In addition, a concrete block including a glass block has been proposed in consideration of daylighting.

  By the way, the concrete block containing the glass block used for a non-structural wall as a concrete block containing the glass block which existed widely conventionally was.

  However, the concrete block including the glass block in this case is not used as a structural wall that supports the building, and it is not used as a seismic wall that bears an external force such as an earthquake. There was not (Akaisho 48-43408, Akaisho 63-146013).

  On the other hand, a technique for constructing a structural wall using a concrete block including a glass block as a member of the structural wall has been proposed.

  Japanese Patent Laid-Open No. 2006-46051 provides a frame-shaped block mounting frame and a frame-like block mounting frame fitted thereto by means of a speed-sensitive damping device provided with a support frame made of shaped steel in a frame structure of a building. A vibration control wall that supports the glass block is proposed.

  The lattice-like block mounting frame is made of an elastic member, and the glass block is fitted with an elastic material as a joint material.

  That is, the glass block in JP-A-2006-46051 is not configured to support force, and the support frame functions only as a structural member of the building.

  On the other hand, JP 2007-205076 A proposes a glass block bearing wall that functions as a structural member of a building.

  In the technique proposed in Japanese Patent Application Laid-Open No. 2007-205076, glass blocks are surrounded by a stainless steel strip, and adjacent glass blocks are bonded to each other with an adhesive at the stainless steel strip.

  In the technique disclosed in Japanese Patent Application Laid-Open No. 2007-205076, it can be said that the glass block supports the force and functions as a structural member of the building.

Japanese Patent No. 3842865 JP 2007-162255 A JP 2007-146447 A JP 2007-146448 A JP 2007-197937 A Japanese Utility Model Publication No. 48-43408 Japanese Utility Model Publication No. 63-146013 JP 2006-46051 A JP 2007-205076 A

  The present invention employs a method of stacking concrete blocks in order to reduce work on site and shorten the construction period.

  Japanese Patent No. 3842865, Japanese Patent Application Laid-Open No. 2007-162255, Japanese Patent Application Laid-Open No. 2007-146447, Japanese Patent Application Laid-Open No. 2007-146448, Japanese Patent Application Laid-Open No. 2007-197937, etc. also propose a method of stacking concrete blocks, Furthermore, a method of laminating concrete blocks provided with openings or a method of laminating polygonal concrete blocks so as to produce openings is disclosed for daylighting.

  However, it is inevitable that the strength and rigidity of the seismic wall will decrease by providing openings in the concrete block. In order to compensate for this, in the above-described conventional technique, an oblique material is provided in a concrete block having an opening, or the concrete block is molded into a hexagonal shape or an octagonal shape in order to resist the compressive force in the oblique direction.

  In order to mold the polygon, the molding work of the concrete block is increased, and the part where the opening is provided becomes thinner in part of the concrete block. For the purpose of reinforcing the tensile strength of the concrete, for example, fibers are mixed. Moreover, it was necessary to use special concrete with high strength.

  On the other hand, the present invention employs a concrete block and utilizes a light-transmitting member with high compressive strength for daylighting. In the present invention, the concrete block has a uniform shape and a shape that can be easily molded, and the concrete surrounding the light-transmitting member having a high compressive strength is also ordinary concrete.

  On the other hand, as described above, concrete blocks including glass blocks for use in non-structural walls have been widely known.

  However, the concrete block used for this conventional non-structural wall is only used for non-structural walls where the weight-reduced glass block has a lower compressive strength than the concrete body with the same volume and shape, and depending on the thing. A cushioning material was provided between the glass block and the surrounding concrete.

  On the other hand, Japanese Patent Application Laid-Open No. 2006-46051 proposes a vibration control wall using a glass block.

  However, in the technique disclosed in Japanese Patent Application Laid-Open No. 2006-46051, the glass block is fitted into a lattice-shaped block mounting frame made of an elastic member so that the glass block is not scattered by force. Further, the glass block is attached to the block mounting frame using the elastic material as a joint material. As described above, in the technology disclosed in Japanese Patent Application Laid-Open No. 2006-46051, the glass block does not support force as a structural member of the structural wall, so that the wall portion itself formed by the glass block is insufficient in strength as a seismic wall. there were.

  In contrast, the technique disclosed in Japanese Patent Application Laid-Open No. 2007-205076 is designed to apply a force to the glass block. However, the glass block is surrounded by a stainless steel strip, and the adjacent glass block is covered with an adhesive at the stainless steel strip. Adhere to each other.

  However, the glass block has a high compressive strength, but causes brittle fracture, so that a sufficient safety factor is required when calculating the yield strength.

  In the technique disclosed in Japanese Patent Application Laid-Open No. 2007-205076, since the width of the stainless steel strip is smaller than the width of the glass block (the width in the thickness direction of the structural wall), the glass block causes brittle fracture. In such a case, the cross section of the glass block may be lost, and the yield strength as a structural wall may be reduced.

  Therefore, the problem to be solved by the present invention is to solve the above-mentioned problems of the prior art, and to achieve high strength and daylighting by using a light-transmitting member with high compressive strength that is excellent in daylighting as a structural member of the earthquake resistant wall. Another object of the present invention is to provide a seismic concrete block that can be manufactured at low cost and a method for constructing a seismic wall using the same.

The earthquake-resistant concrete block according to the present invention is
It is characterized in that the light-transmitting member is incorporated and the concrete is molded so that the side surfaces except the top surface and the bottom surface of the columnar light-transmitting member having higher compressive strength than the concrete body having the same volume and shape are in contact with the concrete. And

The seismic concrete block according to the present invention is
Each side except for the top and bottom surfaces of a square prism light-transmitting member having a compressive strength higher than that of a concrete body having the same volume and shape is arranged so that the side surfaces are inclined at an angle of approximately 45 degrees from the horizontal plane in use. The light transmissive member is built in and concrete molding is performed so that each side surface of the member is in contact with the concrete.

  The concrete can be made of lightweight concrete (lightweight aggregate concrete).

  The light transmissive member may be formed of a hollow or solid glass block.

  The light transmissive member may be formed of a hollow or solid polycarbonate block.

The seismic wall construction method according to the present invention is:
Seismic concrete with built-in light transmissive member and concrete molding so that the side surfaces except the top surface and bottom surface of the columnar light transmissive member having higher compressive strength than the concrete body having the same volume and shape are in contact with the concrete. A step of molding the block;
A plurality of the seismic concrete blocks are laminated, and the adjacent seismic concrete blocks are joined together by a joining material containing mortar and an adhesive so as to be integrated as a seismic wall.

  The seismic concrete block according to the present invention incorporates the light-transmitting member so that the side surfaces except the top surface and the bottom surface of the columnar body have higher compressive strength than the concrete body having the same volume and the same shape are in contact with the concrete. And concrete molding.

  That is, the light-transmitting member in the seismic concrete block of the present invention has a higher compressive strength than the concrete body to which it is replaced, and not only can bear the power of the building during normal times, but also the concrete can be compressed during an earthquake. When receiving a force that causes destruction, the concrete portion around the light-transmitting member is first compressed and broken, and the compressive failure of the light-transmitting member can be suppressed.

  That is, the light transmissive member in the seismic concrete block of the present invention is surrounded by concrete on its peripheral side surface, and the seismic concrete blocks are joined together by a joining material such as mortar and integrated as a seismic wall. Even in a state where the concrete has undergone compression failure, the light-transmitting member and the concrete can maintain the integrity and support the pressure.

  Even if the light transmissive member is cracked, the light transmissive member is contained in the concrete, and the concrete block is integrated into the earthquake resistant wall as described above, so that The cross-sectional defect | deletion of a property member can be prevented, the integrity as a concrete block can be maintained, and collapse of a building etc. can be prevented.

  Thus, according to the present invention, it is possible to obtain an earthquake-resistant concrete block having excellent daylighting performance and high strength and safety.

  In addition, the seismic concrete block of the present invention can be a simple, uniform rectangular shape or the like as the shape of the concrete block, and can be mixed with fibers or using special concrete with high strength. Therefore, it can be manufactured very inexpensively and easily.

  In addition, according to the seismic concrete block of the present invention in which each side surface except the top surface and bottom surface of the light transmission member of the regular quadrangular column is inclined so as to be inclined at approximately 45 degrees from the horizontal surface in the use state, The oblique compressive force can be vertically received by the side surface of the light transmissive member. For this reason, possibility that a light transmissive member and a concrete part will be isolate | separated is low, and there can exist the effect which was excellent as an earthquake-resistant wall.

  When the light-transmitting member is built in lightweight concrete (lightweight aggregate concrete) and the concrete is molded, the effect of further reducing the weight of the seismic concrete block of the present invention can be enjoyed.

  According to the seismic wall construction method of the present invention, the light transmission property is such that the side surfaces except the top surface and the bottom surface of the columnar body having a compressive strength higher than the concrete body having the same volume and the same shape are in contact with the concrete. Since the seismic concrete block is molded with the built-in members, it is possible to produce a simple and uniform rectangular parallelepiped seismic concrete block, and the seismic concrete block can be manufactured inexpensively and easily.

  Furthermore, according to the seismic wall construction method of the present invention, a plurality of seismic concrete blocks are laminated, and the adjacent seismic concrete blocks are joined together with a mortar and a bonding material containing an epoxy resin adhesive to be integrated as a seismic wall. The work load at the site is low, and the seismic wall can be constructed in a short construction period. In addition, since each seismic concrete block is lightweight and can be transported by humans, it is suitable for the addition of a seismic wall in an existing building where a construction machine or the like cannot enter.

  Moreover, as already stated, the earthquake-resistant wall constructed by the earthquake-resistant wall construction method of the present invention has high safety and can have excellent daylighting properties.

The front view of the earthquake-resistant concrete block by one Embodiment of this invention. The side sectional view of the earthquake-resistant concrete block by one embodiment of the present invention. The front view which showed the assembly method of the earthquake-resistant concrete block by one Embodiment of this invention. Side surface sectional drawing which showed the assembly method of the earthquake-resistant concrete block by one Embodiment of this invention. The front view which showed the earthquake-resistant wall by one Embodiment of this invention. Side surface sectional drawing which showed the modification of the earthquake-resistant concrete block by one Embodiment of this invention. Side surface sectional drawing which showed the other modification of the earthquake-resistant concrete block by one Embodiment of this invention. The front view which showed the earthquake-resistant concrete block by other embodiment of this invention. The front view which showed the earthquake-resistant concrete block by other embodiment of this invention. The front view which showed the earthquake-resistant concrete block by other embodiment of this invention. The front view which showed the earthquake-resistant concrete block by other embodiment of this invention. The front view which showed the earthquake-resistant wall by other embodiment of this invention. The front view which showed the earthquake-resistant wall by other embodiment of this invention.

  Next, modes for carrying out the present invention will be described below with reference to the drawings.

  FIG. 1 shows a front view of a seismic concrete block according to an embodiment of the present invention. FIG. 2 shows a side cross-sectional view of the seismic concrete block of FIG.

  As shown in FIGS. 1 and 2, the seismic concrete block 1 of the present embodiment is a columnar body (a regular quadrangular column in the example of FIG. 1), a highly compressive light-transmitting member, and in this example a glass block (the following embodiment) Will be described as “glass block 2”), and concrete molding is performed so that the glass block 2 is incorporated so that the side surface 2c except the top surface 2a and the bottom surface 2b is in contact with the concrete 3.

  The light-transmitting member having a high compressive strength is only required to have a compressive strength higher than that of a concrete body having the same volume and the same shape and to have a certain degree of light permeability. For example, polycarbonate, glass, or the like can be used. .

  As shown in FIG. 2, the glass block 2 is preferably a hollow one from the viewpoint of weight and daylighting, but as a condition, a glass block 2 having a higher compressive strength than a concrete body having the same volume and the same shape is used. In the present specification, “the same shape” is used to mean the same shape on the outside, that is, the contour, and does not mean the same shape even in the hollow as shown in FIG.

  As shown in FIG. 2, the seismic concrete block 1 is formed in a groove shape so that a side surface portion adjacent to another seismic concrete block allows a joining material and joining bars.

  The glass block 2 is not limited to a regular quadrangular prism as will be described later. Moreover, although the shape of the whole earthquake-resistant concrete block 1 is arbitrary, it is preferable to set it as a rectangular parallelepiped from the ease of construction.

  Glass blocks have higher compressive strength, tensile strength, and elastic modulus than concrete, and are not only light-transmitting, but also excellent in sound insulation, heat insulation, and fire resistance. Although suitable for the invention, as described above, for example, polycarbonate can be used as a polycarbonate block.

  FIG. 3 shows an assembling method of the earthquake-resistant concrete block 1, and shows a front view of a plurality of stacked (four in the example of FIG. 3). FIG. 4 shows a side sectional view of the assembled seismic concrete block 1 of FIG.

  As shown in FIGS. 3 and 4, the seismic concrete block 1 according to the present embodiment is formed by joining adjacent seismic concrete blocks 1 with joints 4 made of a joining material containing mortar or an epoxy resin adhesive and integrally joining the joint bars 5. It has become. The joining bars 5 can be omitted depending on the construction method.

  FIG. 5: has shown the front view of the earthquake-resistant wall by one Embodiment of this invention shown in the example which uses the earthquake-resistant concrete block 1 of FIGS. 1-4.

  Reference numeral 6 in FIG. 5 indicates a pillar of an existing building, and reference numeral 7 indicates a beam of the existing building.

  As shown in FIG. 5, the seismic wall 8 of the present embodiment is constructed by stacking the seismic concrete blocks 1 in the openings of the ramen structure of the pillars 6 and beams 7 of the existing building by the method shown in FIGS. Is.

  That is, the method for constructing a seismic wall according to the present invention includes a step of molding a seismic concrete block 1 as shown in FIGS. 1 and 2 in a factory and the like, and a seismic concrete block 1 as shown in FIGS. A plurality of layers are laminated, and adjacent seismic concrete blocks 1 are joined by joints 4 of a joining material containing a mortar or an epoxy resin adhesive, and are integrated as a seismic wall by joining bars 5.

  In addition, the dimension of the opening part of a ramen structure may not be an integral multiple of the earthquake-resistant concrete block 1. A block having a different shape is inserted or the width of the joint 4 is adjusted so that no gap is generated between the earthquake resistant wall 8 and the opening of the rigid frame structure.

  According to the seismic concrete block 1 of the present embodiment, the glass block 2 has higher compressive strength than the concrete body to which it is replaced, and the side surface 2c is surrounded by the concrete 3, so that the concrete can be used during an earthquake. When receiving a force that causes compressive failure, the concrete portion around the glass block is first compressed and destroyed, and the compressive failure of the glass block can be suppressed.

  As is apparent from FIGS. 3, 4 and 5, the seismic wall 8 using the seismic concrete block 1 is joined to the seismic concrete blocks 1 by joints 4 and further integrated as a seismic wall by the joint bars 5. Yes. Therefore, as described above, even if the glass block 2 is not broken and the concrete portion around the glass block 2 is first compressed and broken, and the glass block 2 is cracked, the glass block 2 It is possible to maintain the integrity of the concrete block 3, thereby preventing the cross section of the glass block 2 from being lost, maintaining the integrity of the concrete block, and preventing the building from being crushed.

  Thus, according to this invention, a glass block functions as a structural member of a structural wall, and a highly resistant earthquake-resistant wall can be obtained by interaction with concrete.

  In addition, the seismic concrete block 1 according to the present invention has a glass block 2 or other light-transmitting member having translucency, so that the entire opening of an existing building is blocked as shown in FIG. However, it can demonstrate excellent daylighting.

  Moreover, as is clear from FIGS. 1 to 4 and the description corresponding thereto, the concrete 3 of the earthquake-resistant concrete block 1 according to the present invention can use ordinary concrete having a compressive strength lower than that of the glass block 2 and mix fibers. In addition, since it is not necessary to use special concrete with high strength, each earthquake-resistant concrete block 1 can have a simple shape, so that it can be manufactured at a very low cost and easily. A concrete block can be obtained.

  Moreover, as long as the concrete 3 can maintain the integrity with the glass block 2, lightweight concrete (lightweight aggregate concrete) whose specific gravity is 2.1 or less can be used. In this case, it can be easily transported by hand, and can be suitably used for an earthquake resistant wall expansion work for an existing building where construction equipment cannot be introduced.

  In addition, the seismic concrete block 1 of the present invention is manufactured in a factory and it is not necessary to provide a formwork or the like on site, so it can be constructed in a short period of time and can be manually carried into an existing building. It is extremely suitable for the construction of expansion of seismic walls in existing buildings where machines cannot be installed.

  6 and 7 show modifications of the earthquake-resistant concrete block 1. 6 and 7, the same reference numerals are given to the same parts as those in FIGS. 1 to 5 for easy understanding.

  The modification shown in FIG. 6 uses a solid glass block 2 in order to increase the compressive strength more reliably than a concrete body having the same volume and shape.

  Further, in the modified example of FIG. 7, the glass block 2 has a top surface 2a and a bottom surface 2b located slightly inside the surface of the concrete 3, respectively, thereby enhancing the inclusion of the glass block 2 by the concrete 3, The possibility of cross-sectional defects due to breakage of the glass block 2 can be further reduced.

  8-11 has shown the earthquake-resistant concrete block 1 which has the glass block 2 of various columnar bodies. In order to facilitate understanding, the same parts as those in FIG.

  As shown in FIGS. 8-10, the glass block 2 of this invention should just be a columnar body, and can make an arbitrary cross-sectional shape. Further, the inclination of the side surface with respect to the horizontal plane can be made arbitrary. The shape of the earthquake-resistant concrete block 1 can be made arbitrary.

  In the example of FIG. 8, each side surface 2c excluding the top surface and the bottom surface of the square prismatic glass block 2 is arranged so as to be inclined at approximately 45 degrees from the horizontal surface in the usage state, that is, in a rhombus shape when viewed from the front. It is placed and concrete molded so that each side of the glass block is in contact with the concrete in that state.

  FIG. 9 shows an example in which a cylindrical glass block 2 is used. FIG. 10 shows an example in which a regular hexagonal glass block 2 is used.

  The seismic concrete block 1 in which the side surface of the glass block 2 is inclined at a predetermined angle has an effect that it can well withstand the compressive force in the oblique direction generated during an earthquake or the like.

  For example, as shown in FIG. 8, when each side surface 2c excluding the top and bottom surfaces of a regular quadrangular prism glass block 2 is inclined at an angle of approximately 45 degrees from the horizontal surface in the use state, the compressive force is inclined in an oblique direction during an earthquake. However, since each side surface 2c of the glass block 2 receives a force perpendicular to the surface against the compressive force in the oblique direction, the shearing force between the glass block 2 and the concrete portion can be reduced. The integrity of the glass block 2 and the concrete 3 can be maintained well. In other words, the safety against earthquakes can be further improved.

  The same can be said for the side surface of the regular hexagonal glass block 2 in FIG.

  Further, each side surface 2c of the glass block 2 receives a force perpendicular to the surface with respect to the compressive force in the oblique direction, and the integrity of the glass block 2 and the concrete 3 can be better maintained. The number of scenes in which lightweight concrete, preferably lightweight concrete having a specific gravity of 2.1 or less, can be increased. Lightweight concrete (lightweight aggregate concrete) has lower tensile strength and shear strength than ordinary aggregate concrete with the same compressive strength. For this reason, when the side surface of the glass block 2 receives a force perpendicularly to the pressure in the oblique direction as shown in FIGS. 8 and 10, the weak point of the lightweight concrete (lightweight aggregate concrete) can be compensated. .

  FIG. 11 shows an example of the shape of the earthquake-resistant concrete block 1, which can be a horizontally long rectangular body as viewed from the front.

  FIG. 12 shows an example of the earthquake resistant wall 8 using the earthquake resistant concrete block 1 of FIG. In order to facilitate understanding, the same reference numerals in FIG. 12 denote the same parts as in FIG.

  FIG. 13 shows a seismic wall 8 according to another construction example.

  In FIG. 13, the seismic walls are constructed as sleeve walls 8 a and 8 b of an opening of a ramen structure of columns 6 and beams 7 of an existing building. In FIG. 13, the same parts as those in FIG.

  In the description of FIG. 5 and FIG. 12, the case of covering the entire surface of the opening of the ramen structure of the pillars and beams of the existing building has been described. It can also be used for construction of sleeve walls only. Reinforcement by adding sleeve walls is less proof than when installing seismic walls on the entire surface, but is effective when it is necessary to secure a passage.

DESCRIPTION OF SYMBOLS 1 Earthquake-resistant concrete block 2 Glass block 2a Top surface 2b Bottom surface 2c Side surface 3 Concrete 4 Joint 5 Joint reinforcement 6 Column 7 Beam 8 Earthquake-resistant wall 8a Sleeve wall 8b Sleeve wall

Claims (6)

The light-transmitting member is incorporated into the concrete body so that the side surfaces except the top surface and the bottom surface of the columnar light-transmitting member having higher compressive strength than the concrete body having the same volume and shape are in contact with the concrete, and the concrete is molded. The concrete around the light-transmitting member first undergoes compressive failure when subjected to pressure causing compression failure, and the light-transmitting member and concrete maintain the integrity as a concrete block even in this state. Seismic-resistant concrete block, characterized in that   Each side except for the top and bottom surfaces of a square prism light-transmitting member having a compressive strength higher than that of a concrete body having the same volume and shape is arranged so that the side surfaces are inclined at an angle of approximately 45 degrees from the horizontal plane in use. A seismic-resistant concrete block, wherein the light-transmitting member is incorporated so that each side surface of the member is in contact with the concrete, and the concrete is molded.   The earthquake-resistant concrete block according to claim 1 or 2, wherein the concrete is made of lightweight concrete (lightweight aggregate concrete).   The earthquake-resistant concrete block according to claim 1 or 2, wherein the light transmissive member is formed of a hollow or solid glass block.   The earthquake-resistant concrete block according to claim 1 or 2, wherein the light-transmitting member is made of a hollow or solid polycarbonate block. Seismic concrete with built-in light transmissive member and concrete molding so that the side surfaces except the top surface and bottom surface of the columnar light transmissive member having higher compressive strength than the concrete body having the same volume and shape are in contact with the concrete. A step of molding the block;
A step of laminating a plurality of the seismic concrete blocks, and joining the seismic concrete blocks adjacent to each other with a mortar, a bonding material containing an adhesive, and integrating them as a seismic wall;
When the concrete is subjected to pressure causing compressive failure, the concrete around the light transmissive member first undergoes compressive failure, and even in this state, the light transmissive member and the concrete have integrity as a concrete block. A seismic wall construction method characterized by maintaining the structure.

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