JP2010031610A - Building structure skeleton - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a building structure skeleton in which a wooden beam is reinforced by a steel reinforcing member and a joint part between a wooden column and the wooden beam is reinforced by the steel reinforcing member. <P>SOLUTION: The wooden beam 2 is laid over a plurality of wooden columns 1 to form a rigid-frame structure, and the steel reinforcing member 5 is arranged along the lower face of the wooden beam. Screw members 11 having spiral projecting parts at the peripheral surfaces are vertically screwed into the vicinity of the upper end of the wooden column. The screw members are provided with threaded holes 11b in a right-angled direction to an axis from the peripheral surfaces. The end of the steel reinforcing member is connected to the wooden beam and joined in close contact with the side face of the wooden column by bolts 57 inserted through lateral holes almost horizontally bored from the side face of the wooden column, and screwed with the threaded holes of the screw member. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a building structural frame comprising a plurality of wooden columns, a wooden beam spanned over these wooden columns, and a steel reinforcement joined to the wooden beam. .

  In a wooden building, it is increasingly required to form a large space with few pillars indoors and to provide a large opening for a commercial space or a garage. In such a case, the span of the horizontal member spanned in the horizontal direction becomes large, and the value of the bending moment generated in the horizontal member becomes large. With respect to such a large bending moment, it is required to sufficiently secure the proof strength of the horizontal member and to suppress the deflection to a small extent, particularly to suppress the creep deformation that gradually increases the deflection amount. For this reason, it is necessary to increase the cross-sectional dimension, particularly the height of the horizontal member, that is, the beam.

From the above circumstances, composite members in which a reinforcing member made of steel, aluminum, or the like is joined in the axial direction of a wooden member used as a horizontal member to increase bending rigidity are disclosed in, for example, Patent Document 1, Patent Document 2, and Patent It is proposed in Document 3.
Patent Document 1 and Patent Document 2 describe a composite material in which a metal reinforcing material such as steel or aluminum is integrally bonded when a plurality of small cross-sections of wood are laminated to form a large cross-section woody laminated material. Has been. The composite material described in Patent Document 1 is such that a plurality of plate members are bonded in the horizontal direction, and a metal plate member is sandwiched and bonded between an upper layer portion and a lower layer portion. Moreover, the composite member described in Patent Document 2 is configured by arranging a plurality of plate members in the vertical direction and bonding the vertical side surfaces of these plate members to each other to form a wooden beam. And a groove | channel is formed in a part of board | plate material, a reinforcing bar is inserted in this groove | channel, and it integrates with an adhesive agent.

  The composite horizontal member described in Patent Document 3 includes a horizontal member body made of a wood material and a metal reinforcing material attached to the horizontal member body. The reinforcing member includes a plate-like base portion and a plate-like insertion portion. The plate-like insertion portion is inserted into a groove formed on the lower surface of the horizontal member main body, and the plate-like base portion contacts the lower surface of the horizontal member main body. Arranged in contact. Further, a horizontal hole is provided so as to penetrate the horizontal member from the side surface of the horizontal member main body, and a pin hole is provided so that the position corresponds to the plate-like insertion portion of the reinforcing material. The drift pin inserted into the horizontal member body from the horizontal hole is inserted and driven into the pin hole formed in the plate-like insertion portion, and the screw is inserted into the screw hole formed in the plate-like base portion of the reinforcing material. The reinforcing member is joined to the horizontal member main body by screwing into the horizontal member main body.

By integrating a metal member such as steel or aluminum into a wooden horizontal member as described above, the bending rigidity of the horizontal member is increased compared to a wooden member of the same size, and a large proof stress can be expected. The amount of deflection can be reduced.
JP-A-6-299653 JP-A-8-312059 JP 2006-125034 A

  However, in the structure using the composite beam described in Patent Document 1 and Patent Document 2, it is necessary to bond a metal member together when forming the beam as a laminated material, which requires a lot of labor for processing. Yes. In addition, even in the composite horizontal member described in Patent Document 3, a groove or the like in which the reinforcing material is closely fitted is horizontally mounted in order to join the horizontal material main body made of wood or wood material and the steel reinforcing material. It is necessary to cut the material body. For this reason, it is required to reinforce the wooden horizontal member with a simple structure. Moreover, in the composite beam as described above, the wooden beam is combined with a metal member to increase the strength and rigidity as a horizontal member, but the wooden column joined to the wooden beam is also included. It is required to reinforce the entire structural casing including the proof strength and rigidity.

  This invention is made | formed in view of such a situation, and while reinforcing a wooden beam with a steel reinforcement material, it is reinforced by joining a steel reinforcement material to both in the junction part of a wooden pillar and a wooden beam. It is an object of the present invention to obtain a building structure frame that is effectively reinforced by a steel reinforcing material, in particular, a ramen structure in which a wooden column and a wooden beam are joined so that a bending moment can be transmitted.

  In order to solve the above-mentioned problem, the invention according to claim 1 includes a plurality of wooden columns, a wooden beam supported on an upper end surface of the wooden columns and spanned between the plurality of wooden columns, A steel reinforcing member disposed along the lower surface of the wooden beam and having at least an end joined to the wooden beam, and provided with a spiral projecting portion on the peripheral surface in the vicinity of the upper end of the wooden column. The screw member is screwed in the vertical direction, and the screw member is provided with a screw hole in a direction perpendicular to the axis from the circumferential surface, and is inserted into a horizontal hole drilled substantially horizontally from the side surface of the wooden column, and Provided is a building structural frame in which an end of the steel reinforcing member is joined to a side surface of the wooden column by a bolt screwed into a screw hole of a screw member.

  In this building structure, the wooden beams are reinforced by steel reinforcements arranged along the lower surface, and the steel reinforcements are firmly joined to both the wooden beams and the wooden columns at the ends of the wooden beam branches. Is done. In general, when a steel member is joined near the lower edge of the wooden beam to reinforce the bending moment, a large force acts between the wooden beam and the steel member near the end of the span. In the present invention, the steel reinforcing material is joined to the wooden beam and the wooden column as described above at the end portion of the branch, whereby the respective members are firmly joined to each other, and the physical strength of the structural frame is improved.

  The invention according to claim 2 is the architectural structure case according to claim 1, wherein a plurality of screw members are screwed in the vicinity of the upper end of the wooden pillar, and the screw members are screw holes in the axial direction from the end surface. The wooden beam is coupled to the wooden column so that a bending moment can be transmitted by a plurality of bolts screwed into the screw holes of the screw members, and the end of the steel reinforcement is It is assumed that both the wooden beam and the wooden column are in close contact with each other so as to restrain relative deformation between the wooden beam and the wooden column.

  In this building structure, the steel reinforcing material is in close contact with and joined to both members at the joint portion between the wooden column and the wooden beam having a ramen structure. Accordingly, the relative deformation between the wooden beam and the wooden column is restricted, and the joint between the wooden column and the wooden beam is effectively reinforced. Thereby, the yield strength of the ramen structure is improved and the deformation amount is suppressed.

  The invention according to claim 3 is the building structure case according to claim 1 or 2, wherein the steel reinforcing member includes a beam-shaped portion joined along a lower surface of the wooden beam, and the beam-shaped portion. And a stiffening portion that protrudes downward from the lower surface of the beam-like portion at the end and expands the contact surface with the side surface of the wooden column downward, and the bolt that is screwed into the screw hole of the screw member is The through hole provided in the stiffening portion is inserted into the through hole, and the stiffening portion is fastened to the wooden column.

  In this building structural frame, the contact range of the steel reinforcement with the wooden column is expanded, and the relative deformation between the wooden beam and the wooden column, especially the joint angle is effectively restrained from being changed by the action of the bending moment. . Thereby, a deformation | transformation of a ramen structure is suppressed and a big reinforcement effect is acquired.

  The invention according to claim 4 is the building structure frame according to claim 3, wherein the stiffening portion is attachable to and detachable from the beam-shaped portion, and the stiffening portion is attached to a side surface of the wooden column. Later, it is assumed that it can be joined to the beam-like portion.

  In this building structure frame, a steel beam with a beam-shaped portion separated from a steel reinforcement member is attached to a standing wooden column, and the beam-like portion of the steel reinforcement material is joined along the lower surface. It can be placed on a standing wooden pillar and installed. And a steel reinforcement can be fixed so that it may contact | adhere to both a wooden beam and a wooden pillar by joining a stiffening part and the beam-shaped part of a steel reinforcement.

  The invention according to claim 5 is the building structure casing according to claim 4, wherein the joint surface between the stiffening portion and the beam-shaped portion is downward from the edge side of the beam-shaped portion toward the center of the span. It shall be inclined.

  As described above, since the joint surface between the beam-like portion of the steel reinforcement and the stiffening portion is inclined, when the wooden beam to which the beam-like portion is joined is bridged on the wooden column, the beam-like portion and The stiffening part can be easily brought into close contact with the workability.

  As described above, in the building structural frame according to the present invention, it is possible to reinforce the wooden beam on which a bending moment acts, and join the end of the steel reinforcing material to the wooden beam and the wooden column, thereby reinforcing the steel. A large reinforcing effect can be obtained by avoiding a large force from being concentrated between the ends of the material and the wooden beam.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic perspective view showing an example of a building structural frame according to the present invention.
This building structure frame uses a rigid frame structure in which wooden beams and wooden columns are joined so that a bending moment can be transmitted. Each of the lower layer part constituting the first floor and the upper layer part constituting the second floor It is formed by combining multiple ramen frames. And the whole structural housing is comprised by laminating | stacking these. Each ramen frame has a so-called beam-winning structure in which wooden beams 2 and 4 are placed on and joined to the wooden columns 1 and 3, and each of the columns 1 and 3 constituting the ramen frame, respectively. The cross section is a flat member having a large dimension in the axial direction of the beam to be joined and a small dimension in the direction perpendicular thereto. The beams 2 and 4 are also flat members having a large vertical cross-sectional dimension and a small horizontal cross-sectional dimension. Therefore, the joint portion of each frame structure has a structure that resists bending in one direction.

  These frames are joined so that the directions are perpendicular to each other on a plane, that is, the beams 2-1, 2-2, 4-1 and 4-2 of a plurality of frames are perpendicular to each other. Has been. Thus, a plurality of rigid frame structures that resist horizontal forces in different directions are combined with each other to form a structural frame that can resist horizontal forces in all directions. The upper column 3 is erected on the beam 2 of the lower frame structure, and the bending moment is transmitted also at these joints.

  One of the rigid frame structures used in the first floor portion has a large space between the wooden beams 2-1 in order to provide a large opening, and the steel reinforcing material 5 is used in this portion. This ramen frame is a structure in which a wooden beam 2-1 is bridged over two wooden columns 1-1 and 1-2, and a steel reinforcement is provided between the two wooden columns 1-1 and 1-2. 5 is joined to the lower surface of the wooden beam 2-1. And the edge part of this steel reinforcement material 5 is firmly joined with the wooden beam 2-1, and contact | abutted to the side surface of the wooden pillar 1-1, 1-2, These wooden pillar 1-1, 1-2. Are also combined.

FIG. 2 is an exploded perspective view showing a portion where the wooden beam 2, the wooden column 1 and the steel reinforcing member 5 of the frame structure are joined. FIG. 3 is a cross-sectional view of the same joint portion, and shows a cross section parallel to the axis of the rigid frame structure.
In this frame structure, notches are provided at both ends in the long side direction on the upper end surface of the wooden column 1, and the central portion 1 a is in contact with the lower surface of the wooden beam 2. And the two 1st screw members 11 and 11 are screwed in from the notch of the wooden pillar 1 to the axial direction of this wooden pillar 1. As shown in FIG. The first screw member 11 is provided with a spiral projecting portion on the side surface of a rod-shaped steel member, and is screwed into a hole provided in advance in the wooden pillar 1 and has a large pulling resistance. Yes.

  On the other hand, the two second screw members 12 and 12 are also screwed into the corresponding positions of the wooden beam 2 in the vertical direction. These second screw members also have the same configuration as the first screw member, and are screwed into holes provided through the wooden beam in the vertical direction. The first screw member 11 and the second screw member 12 are provided with screw holes (see FIG. 5) in the axial direction from the end surfaces. A headless bolt 15 is screwed into a screw hole provided in the lower end surface of the second screw members 12, 12 screwed into the wooden beam 2, and a nut 16 is screwed into the headless bolt 15. On the other hand, a bolt 14 is screwed into the screw hole 11 a of the first screw member 11 screwed into the wooden pillar 1. A box-like beam-to-column fitting 13 disposed in the notch of the column is coupled to the first screw member 11 by a bolt 14 and coupled to the second screw member 11 by a headless bolt 15 and a nut 16. Has been. Thereby, the wooden pillar 1 and the wooden beam 2 are joined via the screw members 11 and 12 and the pillar-beam joint fitting 13.

  The steel reinforcing material 5 includes a joining plate portion 52 for joining the wooden beam 2 and a stiffening portion 53 joined to the wooden column 1 at both ends of the beam-like portion 51 whose cross-sectional shape is I-shaped. The upper surface of the beam-shaped portion 51 is brought into contact with the lower surface of the wooden beam 2 and is coupled to the wooden beam 2.

  H-shaped steel or the like can be used for the beam-like portion 51, and a short steel pipe member 54 is attached to the upper surface at a predetermined interval in the axial direction in the vertical direction. These steel pipe members 54 are provided with through holes 54a in the lateral direction. The steel pipe member 54 is inserted into a hole 2a provided at a corresponding position of the wooden beam 2, and a drift pin 55 inserted into the horizontal hole 2b provided in the horizontal direction from the side surface of the wooden beam 2 is inserted into the through hole 54a. Is done. Thereby, as shown in FIG. 4, the wooden beam 2 and the beam-like portion 51 of the steel reinforcing material are coupled, and the relative displacement between them is constrained.

  The joining plate portion 52 is a plate-like member raised upward from both side edges in the upper portion of the beam-like portion 51, and is provided with a plurality of through holes 52a. A horizontal hole 2c is formed in a portion corresponding to the through hole 52a of the wooden beam 2, and the wooden beam 2 and the joining plate portion 52 are connected to each other by a drift pin 56 inserted into the through hole 52a and the horizontal hole 2c. Are combined. Thereby, the edge part of the steel reinforcement 5 is couple | bonded with respect to the wooden beam 2 so that a relative displacement may not arise in an up-down direction and the axial direction of the wooden beam 2. FIG.

  The stiffening portion 53 includes a plate-like member 53a that extends downward from the end face of the beam-like portion 51, and ribs 53b that connect both side edges of the plate-like member 53a to the beam-like portion 51. The plate-like member 53 a is brought into contact with the side surface of the wooden pillar 1. And it fixes to the wooden pillar 1 with the volt | bolt 57 connected to the through-hole provided in the plate-shaped member 53a. As shown in FIG. 5, the first screw member 11 screwed into the upper end portion of the wooden column 1 is provided with a screw hole 11 b in a direction perpendicular to the axis from the side surface, and the plate-like member 53 a of the stiffening portion 53. The stiffening portion 53 can be fastened and fixed to the side surface of the wooden column 1 by screwing the bolt 57 inserted into the through hole provided in the screw hole into the screw hole 11b of the first screw member. Thereby, the relative displacement of the wooden beam 2 and the wooden column 1 is restrained. Further, a vertical force, that is, a shearing force is transmitted from the steel reinforcing material 5 to the wooden column.

The steel reinforcing material 5, the wooden beam 2, and the wooden column 1 can be joined as follows.
The wooden beam 2 and the steel reinforcing material 5 are processed in advance in a factory or the like, and are coupled to each other. That is, the steel pipe member 54 is welded and joined to the upper surface of the steel reinforcing member 5, and the joining plate part 52 and the stiffening part 53 are provided at the end part. On the other hand, a hole 2a for inserting the steel pipe member 54 is formed on the lower surface of the wooden beam 2, and a lateral hole 2b for inserting the drift pin 55 is formed from the side surface. Then, the steel pipe member 54 is inserted into the hole 2 a, the upper surface of the steel reinforcing member 5 and the lower surface of the wooden beam 2 are brought into contact with each other, and are integrally coupled by insertion of the drift pin 55. Further, a second screw member 12 for joining to the wooden pillar 1 is screwed into the wooden beam 2.

  On the other hand, the wooden pillar 1 is provided with a notch having a predetermined dimension at an end portion in a processing stage in a factory or the like. Then, a hole is cut in the axial direction from the notch, and the first screw member 11 is screwed. A bolt 14 is screwed into a screw hole 11a provided at an end portion of the first screw member 11, and the box-shaped beam-to-column fitting 13 is brought into contact with the end surface of the first screw member 11, so that the inside of the notch It is fixed to.

  At the site where a building is constructed, the wooden pillar 1 is erected at a predetermined position. The wooden beam 2 spanned on these wooden pillars and the steel reinforcing member 5 integrally coupled thereto are lifted by a crane or the like and placed at a predetermined position on the standing wooden pillar 1. At this time, a headless bolt 15 is screwed in advance into a screw hole provided in the lower end surface of the second screw member 12 embedded in the wooden beam 2, and the tip protrudes downward. The headless bolt 15 is supported at a position where the tip of the headless bolt 15 is opposed to the beam-to-column fitting 13 fixed to the column 1, and the wooden beam 2 is slowly lowered so that the bolt of the beam-to-column fitting 13 fixed to the column 1. The headless bolt 15 is inserted into the hole 13a from the tip. Thereby, the wooden beam 2 is placed at a predetermined position on the wooden column 1, and the stiffening portion 53 of the steel reinforcing material 5 faces the side surface of the wooden column 1.

Then, the nut 16 is screwed into the tip of the headless bolt 15 from the open portion of the side surface of the beam-to-column fitting 13 fixed to the wooden column 1, and the second screw screwed into the wooden beam 2 by tightening firmly. The screw member 12 and the column beam joining metal fitting 13 are firmly joined. Thereby, the wooden beam 2 and the wooden column 1 are firmly coupled to each other in two positions in the axial direction of the wooden beam 2 through the screw members 11 and 12 and the column beam joining bracket 13 so that a bending moment can be transmitted. Be joined.
Further, the bolt 57 is passed through the through hole provided in the stiffening portion 53 of the steel reinforcing member 5, and the bolt 57 is screwed into the screw hole 11 b of the first screw member 11 screwed into the wooden pillar 1 and tightened. Accordingly, the stiffening portion 53 is strongly pressed against the side surface of the wooden column 1 and is firmly fixed.

  In the embodiment described above, the stiffening portion 53 of the steel reinforcing member 5 is formed so as to be continuous with the beam-shaped portion 51. However, as shown in FIG. And separable. When the steel reinforcing member 6 has such a structure, the stiffening portion 62 is fixed to the side surface of the wooden column 1 by the bolt 64 screwed into the screw hole 11b of the first screw member 11 before assembling the structural housing. Keep it. Then, after the wooden beam 2 to which the beam-like portion 61 of the steel reinforcing material is coupled is placed at a predetermined position, the stiffening portion 62 and the beam-shaped portion 61 can be coupled by the bolt 63.

  In the embodiment shown in FIG. 6, the joint surface between the beam-like portion 61 and the stiffening portion 62 is set to be substantially horizontal. However, as shown in FIG. 7, the stiffening portion 72 and the beam-like portion 71 are set. Can be set so as to incline downward from the edge side of the beam-like portion 71 toward the center of the span. Even when using such a steel reinforcing member 7, the stiffening portion 72 separated from the beam-like portion 71 is attached to the side surface of the wooden column 1 with the bolt 74, and the beam-like portion 71 is coupled to the wooden beam 2. Can be coupled to the beam-shaped portion 71 and the stiffening portion 72 by a bolt 73. By setting the joint surface to be inclined like the steel reinforcement member 7, the work of joining the wooden column 1 and the wooden beam 2 is facilitated and the beam-like portion 71 of the steel reinforcement member 7 is complemented at the time of assembly. It becomes easy to bond the rigid portion 72 to each other.

  In addition, the structure which couple | bonds the beam-like parts 51, 61, 71 of the steel reinforcements 5, 6, and 7 and the wooden beam 2 is not limited to the structure shown in FIG. 4, Other various structures are employ | adopted. A structure that can prevent the wooden beam 2 and the beam-like portions 51, 61, 71 of the steel reinforcement from shifting in the axial direction is desirable. For example, as shown in FIG. 8, a steel plate 21 having a through hole is welded to the upper surface of the beam-like portion 51, and the wooden beam 2 and the beam-like portion 51 are coupled using the drift pin 22. Alternatively, as shown in FIG. 9, a lag screw 23 inserted through a through hole provided in the beam-like portion 51 may be screwed into the wooden beam 2 to be joined.

  In the embodiment described above, the wooden beam and the wooden column are joined so that a bending moment can be transmitted. However, the wooden column joined to the wooden beam mainly supports the load in the vertical direction. It may be a thing which does not constitute a ramen structure.

It is a schematic perspective view which shows one Embodiment of the building structural frame which concerns on this invention. It is a disassembled perspective view which shows the part to which a wooden beam, a wooden pillar, and a steel reinforcement are joined of the building structural frame shown in FIG. It is a schematic sectional drawing which shows the cross section parallel to the axis line of the rigid frame structure of the junction part shown in FIG. It is the schematic side view and schematic sectional drawing which show the joining structure of the wooden beam of the building structural frame shown in FIG.2 and FIG.3, and the beam-shaped part of a steel reinforcement. FIG. 4 is a plan view, a front view, and a side view of a screw member that is screwed into a wooden pillar of the building structure frame shown in FIGS. 2 and 3. It is a schematic sectional drawing which shows the principal part of the building structure frame which is other embodiment of this invention. It is a schematic sectional drawing which shows the principal part of the building structure frame which is other embodiment of this invention. It is the schematic side view and schematic sectional drawing which show the other example of the joining structure of the wooden beam and the beam-shaped part of a steel reinforcement in the building structural frame of this invention. It is the schematic side view and schematic sectional drawing which show the other example of the joining structure of the wooden beam and the beam-shaped part of a steel reinforcement in the building structural frame of this invention.

Explanation of symbols

1,3: Wooden pillars, 2,4: Wooden beams, 5, 6, 7: Steel reinforcements,
11: First screw member, 11a: Axial screw hole, 11b: Screw hole perpendicular to the axis, 12: Second screw member, 13: Beam-column joint, 14: Bolt, 15: Headless bolt, 16: nut,
51: Beam-shaped portion of steel reinforcement, 52: Joint plate portion, 53: Stiffening portion, 54: Tubular member, 55, 56: Drift pin, 57: Bolt,
61, 71: Beam-shaped part of steel reinforcement, 62, 72 stiffening part, 63, 64, 73, 74: Bolt

Claims (5)

Multiple wooden pillars,
A wooden beam supported on the upper end surface of the wooden column and spanned between the plurality of wooden columns;
A steel reinforcement disposed along the lower surface of the wooden beam and having at least an end joined to the wooden beam;
In the vicinity of the upper end of the wooden pillar, a screw member having a spiral projecting portion on the peripheral surface is screwed in the vertical direction,
The screw member is provided with a screw hole in a direction perpendicular to the axis from the circumferential surface,
The end of the steel reinforcing member is joined to the side surface of the wooden column by a bolt that is inserted into a horizontal hole that is drilled substantially horizontally from the side surface of the wooden column and is screwed into the screw hole of the screw member. An architectural structure frame characterized by this. A plurality of screw members are screwed near the upper end of the wooden pillar,
The screw member is provided with a screw hole in an axial direction from the end face, and the wooden beam is coupled to the wooden column so that a bending moment can be transmitted by a plurality of bolts screwed into the screw hole of each screw member. Has been
The end of the steel reinforcement is closely bonded to and joined to both the wooden beam and the wooden column so as to restrain relative deformation between the wooden beam and the wooden column. The building structure housing according to claim 1. The steel reinforcing member has a beam-shaped portion joined along the lower surface of the wooden beam, and protrudes downward from the lower surface of the beam-shaped portion at the end of the beam-shaped portion, and comes into contact with the side surface of the wooden column. And a stiffening part that expands downward,
The bolt to be screwed into the screw hole of the screw member is inserted into a through hole provided in the stiffening portion, and the stiffening portion is fastened to the wooden column. The building structure housing according to claim 2.   The said stiffening portion can be attached to and detached from the beam-shaped portion, and can be joined to the beam-shaped portion after the stiffening portion is attached to a side surface of a wooden column. Item 5. The building structure frame of Item 3. The building structure housing according to claim 4, wherein a joint surface between the stiffening portion and the beam-shaped portion is inclined downward from an edge side of the beam-shaped portion toward a center of the span.

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