JP2009062788A - Reinforcing structure of column and beam frame - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a reinforcing structure of a column and beam frame capable of enhancing rigidity of the whole column and beam frame sufficiently. <P>SOLUTION: In this structure for reinforcing the column and beam frame 2 of a building unit 1, a V-shaped reinforcing member 3 connecting lower ends of two diagonal members 3a, 3a between a floor beam 4 and a ceiling beam 5 of the column and beam frame 2 joins connection end parts of two diagonal members 3a, 3a with the floor beam 4 by using pins, and two independent end parts of two diagonal members 3a, 3a are joined with the ceiling beam 5 by using pins. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a reinforcing structure for a column beam frame that reinforces a column beam frame of a building.

Conventionally, when reinforcing a column beam frame of a building or a building unit, for example, as disclosed in Patent Document 1, it is known to install a reinforcing column in a column beam frame.
JP 2000-170261 A

  In the reinforcement structure of a column beam structure using the above-mentioned conventional reinforcing column, the upper and lower ends of the reinforcing column are rigidly connected to the upper and lower beams, and the bending moment of this reinforcing column is efficiently transmitted to the beam, thereby When the force is applied, the horizontal reaction force of the reinforcing column resists at the rigid joint with the beam to increase the rigidity of the entire column beam structure.

  On the other hand, the applicant of the present invention has an S-shaped deformation of the column beam frame when a horizontal force is applied, and there is a part where the deformation width increases symmetrically from the center part of the beam. If a means for applying force is taken, the column beam frame can be prevented from being deformed in an S shape as much as possible, and the rigidity of the entire column beam frame can be sufficiently increased. Focused on.

  Therefore, the present invention has a configuration in which a reaction force acts on a portion where the S-shaped deformation of the beam in the column beam frame when a horizontal force is applied, and the column beam frame is not deformed as much as possible. An object of the present invention is to provide a reinforcing structure for a column beam frame that can sufficiently increase the overall rigidity.

  In order to achieve the above object, a reinforcing structure for a column beam frame according to the present invention is a reinforcing structure for a column beam frame that reinforces a column beam frame of a building. A V-shaped or inverted V-shaped reinforcing member in which one end of the diagonal member is connected to pin-connect the connecting end portion of the two diagonal members to one beam, and the two diagonal members Two independent end portions are also installed by being pin-connected to the other beam.

  Here, the V-shaped or inverted V-shaped reinforcing member may be installed at a substantially central portion of the beam of the column beam frame.

  Further, the V-shaped or inverted V-shaped reinforcing member has a horizontal force acting on the column beam frame when the connecting end portion of the two diagonal members is pin-joined to the approximate center of the one beam. The two diagonal members are connected at an angle perpendicular to the tangent of the central portion of the assumed maximum S-shaped deformation curve of the other beam, and the two independent ends are pinned to the other beam. It is good that it is joined.

  Further, the beam constituting the column beam frame is a grooved steel or a grooved steel with a lip, and the connecting ends of the two diagonal members constituting the V-shaped or inverted V-shaped reinforcing member. And a joint plate projecting in the vertical direction from the side surfaces of the two independent end portions, and the joint plate of the connecting end portion is pin-joined to the web portion of the one beam, and the two The joining plate of the independent end portion may be pin-joined to the web portion of the other beam, and the V-shaped or inverted V-shaped reinforcing member may be installed in the column beam frame.

  Here, the joining plate is formed with a bent portion, and the connecting end portions and the two independent end portions of the two diagonal members constituting the V-shaped or inverted V-shaped reinforcing member. The bent portions of the joining plate may be joined to each other, and the joining plate may protrude in the vertical direction from the side surfaces of the connecting end portions and the two independent end portions of the two diagonal members.

  Further, the joining plate of the V-shaped or inverted V-shaped reinforcing member may be pin-joined to the web portion of the beam with a bolt and a nut.

  Specifically, the joint plate is integrally provided with a bolt so as to protrude to the joint surface side, the web portion of the beam is provided with a bolt hole, and the bolt is passed through the bolt hole. The nut may be screwed onto the bolt, and the joining plate may be pin joined to the web portion of the beam.

  Since the reinforcing structure of the column beam frame of the present invention configured as described above is a configuration in which a V-shaped or inverted V-shaped reinforcing member is installed by pin connection between opposing beams of the column beam frame. The reaction force acts on the part where the S-shaped deformation of the beam in the column beam frame becomes large when the force is applied, by the V-shaped or inverted V-shaped reinforcing member, so that the column beam frame is not deformed as much as possible. The rigidity of the entire column beam can be increased.

  Here, when a V-shaped or inverted V-shaped reinforcing member is installed at a substantially central portion of the beam of the column beam frame, the S-shaped deformation of the beam in the column beam frame when horizontal force is applied symmetrically. The reaction force is exerted by the V-shaped or inverted V-shaped reinforcing member on the portion where the height becomes large, and the rigidity of the entire column beam frame can be efficiently increased by preventing the column beam frame from being deformed into an S shape as much as possible.

  In addition, two V-shaped or inverted V-shaped reinforcing members are formed at two angles at right angles to the tangent at the center of the assumed maximum S-shaped deformation curve of the beam when horizontal force is applied to the column beam frame. When connecting diagonal members, a V-shaped or inverted V-shaped reinforcing member is used in a portion where the S-shaped deformation of the beam in the column beam frame is the largest when the horizontal force is applied symmetrically and functionally. The reaction force works and the column beam frame is prevented from being deformed into an S shape as much as possible, so that the rigidity of the entire column beam frame can be increased more efficiently.

  Further, the beam constituting the column beam frame is a grooved steel or a grooved steel with a lip, and a joining plate projecting from the side face of the connecting end portion and the two independent end portions of the V-shaped or inverted V-shaped reinforcing member is provided. And connecting the connecting plate at the connecting end to the web portion of one beam, and connecting the connecting plate at the two independent ends to the web portion of the other beam to form a V-shape or When an inverted V-shaped reinforcing member is installed, since the manufacturing is easy, the present invention can be specifically realized in an aspect excellent in economy.

  Here, a bent portion is formed in the joining plate, and the bent portion of the joining plate is joined to the connecting end portion and the two independent end portions of the two diagonal members constituting the V-shaped or inverted V-shaped reinforcing member. In the case where the joining plate protrudes in the vertical direction from the side faces of the two diagonal ends and the two independent ends, the joining plate can be easily provided, and the manufacture is simpler. .

  Further, when a V-shaped or inverted V-shaped reinforcing member joining plate is joined to the web portion of the beam with bolts and nuts, welding is not frequently used, so that the workability is excellent.

  Further, when the bolt is integrally provided on the joining surface side of the joining plate, the bolt hole is provided in the web portion of the beam, and the joining plate is pin-joined to the web portion of the beam with a nut, the construction can be easily performed. Furthermore, in the column beam structure of a building unit, the fit between the beams of adjacent building units is improved.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

  As shown in FIG. 1, the reinforcing structure of the column beam frame of the present embodiment is a structure that reinforces the column beam frame 2 of the building unit 1 as a building. Between the floor beam 4 and the ceiling beam 5 as the beams of the column beam frame 2, the V-shaped reinforcing member 3 in which the lower ends of the two diagonal members 3 a and 3 a are connected to each other, the two diagonal members 3 a, The connecting end portion 3a is pin-joined to the floor beam 4, and the two independent end portions of the two diagonal members are also pin-joined to the ceiling beam 5 and installed.

  Here, the V-shaped reinforcing member 3 is installed at the center of the column beam frame 2.

  Further, as shown in FIG. 2, the V-shaped reinforcing member 3 is attached to the column beam frame 2 when the connecting ends of the two diagonal members 3a, 3a are pin-joined to the center of the floor beam 4. The two diagonal members 3a, 3a are connected at an angle that intersects with the tangent at the center of the maximum S-shaped deformation curve represented by the dotted line and the alternate long and short dash line of the ceiling beam 5 when the horizontal force P is applied, Two independent ends are pin-joined to the ceiling beam 5.

  The reinforcing structure of the column beam frame of the present invention thus configured is a configuration in which the V-shaped reinforcing member 3 is installed between the floor beam 4 and the ceiling beam 5 of the column beam frame 2 by pin bonding. When the horizontal force P is applied, a reaction force is exerted by the V-shaped reinforcing member 3 on the portion of the column beam frame 2 where the S-shaped deformation of the ceiling beam 5 becomes large, so that the column beam frame 2 is not deformed as much as possible. Thus, the rigidity of the entire column beam frame 2 can be increased.

  Here, since the V-shaped reinforcing member 3 is installed in the central portion of the column beam frame 2, the S-shaped deformation of the ceiling beam 5 in the column beam frame 2 when the horizontal force P acts symmetrically. A reaction force is exerted on the portion where the length of the beam becomes larger by the V-shaped reinforcing member 3 so that the column beam frame 2 is prevented from being deformed into an S shape as much as possible, and the rigidity of the entire column beam frame 2 can be efficiently increased.

  In addition, the V-shaped reinforcing member 3 is formed at two angles at right angles to the tangent at the center of the assumed maximum S-shaped deformation curve of the ceiling beam 5 when the horizontal force P is applied to the column beam frame 2. Since the diagonal members 3a and 3a are connected to each other, the V-shaped portion of the ceiling beam 5 in the column beam frame 2 where the horizontal force P acts symmetrically and functionally is maximized. The reaction force is exerted by the letter-shaped reinforcing member 3 so that the column beam frame is prevented from being deformed into an S shape as much as possible, so that the rigidity of the entire column beam frame 2 can be increased more efficiently.

  Next, the reinforcing structure of the column beam frame according to the embodiment will be described.

  As shown in FIG. 1, the reinforcing structure of the column beam frame of this embodiment is also a structure that reinforces the column beam frame 2 of the building unit 1 as a building. As shown in FIGS. 3 and 4, the floor beam 4 and the ceiling beam 5 as beams constituting the column beam frame 2 are channel steel.

  Then, as shown in FIGS. 5 and 6, the vertical direction from the side surfaces of the connecting end portions and the two independent end portions of the diagonal members 3 a and 3 a of the two rectangular steel pipes constituting the V-shaped reinforcing member 3. The joint plates 7 projecting from each other are provided.

  The joining plate 7 at the connecting end is pin-joined to the web part 4b at the center of the floor beam 4 with bolts 8... And nuts 9.

  In addition, the joint plates 7 at the two independent ends are pin-joined to the web part 5b of the ceiling beam 5 with bolts 8 ... and nuts 9 ... (see Fig. 4).

  Thus, the V-shaped reinforcing member 3 is installed between the floor beam 4 and the ceiling beam 5 of the column beam frame 2 (see FIG. 3).

  That is, this example is a configuration that further embodies the above embodiment. Since other configurations are substantially the same as those of the above-described embodiment, the corresponding components are denoted by the same reference numerals and description thereof is omitted.

  Here, a rectangular bent portion 7a is formed in the rectangular joining plate 7, and the connecting plate 7 is connected to the connecting end portions (lower end portions) of the diagonal members 3a, 3a of the square steel pipe. The bent portion 7a is joined by welding joining at the same angle as in the above embodiment, and the bent portions 7a of the joining plate 7 are joined to two independent end portions (upper end portions), respectively. The diagonal members 3a, 3a are protruded in the vertical direction from the side surfaces of the connecting end portion and the two independent end portions to constitute a V-shaped reinforcing member 3 (see FIGS. 4 to 6).

  The bent portion 7a of the rectangular joining plate 7 is formed by bending at an angle of 45 degrees in a side view, and the connecting end portions and the two independent end portions of the diagonal members 3a and 3a of the two square steel pipes are also provided. In accordance with this, it is processed to an angle of 45 degrees, and these are joined by welding. However, since it is only necessary to consider the ease of processing, the angle is not limited to 45 degrees.

  Also, a total of four headless bolts 8,... Are integrally provided at the four corners of the rectangular joining plate 7 on the connecting end side by stud welding or plug welding so as to protrude toward the joining surface side. The bolts 8 are passed through four bolt holes (not shown) provided at the corresponding joint positions of the web portion 4b of the floor beam 4. Then, nuts 9 are screwed onto these bolts 8 and so on, and the joining plate 7 on the connecting end side is pin-joined to the web portion 4b of the floor beam 4 (see FIGS. 4 and 4). 5).

  In addition, a total of four headless bolts 8... Are integrally provided at the four corners of the rectangular joining plate 7 on the independent end side by stud welding or plug welding so as to protrude toward the joining surface side. The bolts 8 are passed through four bolt holes (not shown) provided at the corresponding joint positions of the web portion 5b of the ceiling beam 5. Then, nuts 9 are screwed onto these bolts 8 and so on, and the joining plate 7 on the independent end side is pin-joined to the web portion 5b of the ceiling beam 5 (see FIGS. 4 and 4). 5).

  In the reinforcing structure of the column beam frame of the present example configured as described above, in addition to the effects of the above-described embodiment, the floor beam 4 and the ceiling beam 5 constituting the column beam frame 2 are made of groove steel (or a groove with a lip). And a joining plate 7 protruding from the side face of the connecting end portion of the V-shaped reinforcing member 3 and the two independent end portions. And the joining plate 7 of a connection end part is pin-joined to the web part 4b of the floor beam 4. FIG. In addition, the joint plates 7 at the two independent ends are pin-joined to the web portion 5b of the ceiling beam 5. A V-shaped reinforcing member 3 is installed between the floor beam 4 and the ceiling beam 5 of the column beam frame 2. Therefore, since the manufacturing is easy, the present invention can be specifically realized in an aspect excellent in economy.

  Here, a bent portion 7 a is formed on the joining plate 7, and the bent portion 7 a of the joining plate 7 is connected to the connecting end portion and two independent ends of the two diagonal members 3 a, 3 a constituting the V-shaped reinforcing member 3. Are joined to each other, and the joining plate 7 protrudes in the vertical direction from the side surfaces of the two oblique members 3a and 3a and the two independent ends, so that the joining plate 7 can be easily provided. It is easier to manufacture.

  Further, the joining plate 7 on the connecting end side is pin-joined to the web portion 4b of the floor beam 4 with bolts 8,... And nuts 9,. , And the web portion 5b of the ceiling beam 5 are pin-joined with bolts 8,... And nuts 9,.

  Further, headless bolts 8... Are integrally provided on the joining surface side of the joining plate 7 on the connecting end side, bolt holes are provided in the web portion 4 b of the floor beam 4, and are connected by nuts 9. The joint plate 7 on the end side is pin-joined to the web portion 4b of the floor beam 4, and the headless bolts 8,... Are integrally provided on the joint surface side of the joint plate 7 on the two independent end portions, Bolt holes are provided in the web portion 5b of the ceiling beam 5, and the two independent end side joining plates 7 are pin-joined to the web portion 5b of the ceiling beam 5 with nuts 9,. Furthermore, since there is no protruding bolt head, the fitting between the beams of the adjacent building units 1 and 1 is improved.

  The best embodiment of the present invention has been described in detail with reference to the drawings, but the specific configuration is not limited to this embodiment and example, and the design does not depart from the gist of the present invention. Such modifications are included in the present invention.

  For example, in the said embodiment and Example, although the V-shaped reinforcement member 3 was installed and implemented in the center part of the column beam frame 2, it is not restricted to this. That is, as shown in FIG. 7, the inverted V-shaped reinforcing member 30 may be installed between the floor beam 4 and the ceiling beam 5 of the column beam frame 2.

  Moreover, as shown in FIG. 8, you may install the V-shaped reinforcement member 3 in the position away from the center part. In this case, since the V-shaped reinforcing member 3 is installed only on the left side of the column beam frame 2, the left side in which the S-shaped deformation of the ceiling beam 5 in the column beam frame 2 becomes large when the horizontal force P is applied. A reaction force is exerted only on the portion by the V-shaped reinforcing member 3 so that the column beam frame 2 is prevented from being deformed into an S shape as much as possible, thereby increasing the rigidity of the entire column beam frame 2.

  Furthermore, in the said embodiment and Example, although implemented in the building unit 1 as a building, it can implement similarly in a normal building.

  Moreover, in the said embodiment and Example, the V-shaped reinforcement member 3 is a tangent of the center part of the largest S-shaped deformation curve assumed of the ceiling beam 5 when the horizontal force P acts on the column beam frame 2 The two diagonal members 3a, 3a are connected to each other at an angle that intersects the right angle with the diagonal members 3a, 3a. The connecting angle of the diagonal members 3a, 3a is the S of the ceiling beam 5 in the column beam frame 2 when the horizontal force P is applied. If the connecting angle is such that a reaction force acts on the portion where the deformation becomes large and the S-shaped deformation of the column beam frame is prevented as much as possible, and the rigidity of the column beam frame 2 can be enhanced as much as possible. Since it is good, it is not limited to this.

  Furthermore, in the said Example, since the joining of the joining plate 7 of a connection end part side and two independent end parts, the web part 4b of the floor beam 4, and the web part 5b of the ceiling beam 5 should just be pin joining. Alternatively, welding may be performed.

It is a perspective view which shows schematic structure of the building unit to which the reinforcement structure of the column beam frame of the best embodiment of this invention is applied. It is a schematic diagram which shows schematic structure of the reinforcement structure of the column beam frame of the best embodiment of this invention. It is a front view which shows schematic structure of the reinforcement structure of the column beam frame of an Example. FIG. 4 is a cross-sectional view taken along line AA in FIG. 3. It is a rear view which shows schematic structure of the V-shaped reinforcement member of an Example. It is a side view which shows schematic structure of the V-shaped reinforcement member of an Example. It is a schematic diagram which shows the reinforcement structure of the column beam frame of the other Example of this invention. It is a schematic diagram which shows the reinforcement structure of the column beam frame of the other Example of this invention.

Explanation of symbols

1 Building unit (building)
2 Column-beam frame 3 V-shaped reinforcing member 30 Inverted V-shaped reinforcing member 4 Floor beam (beam)
5 Ceiling beams (beams)
7 Joining plate 7a Bent part 4a Flange part 5a Flange part 4b Web part 5b Web part 8 Bolt 9 Nut

Claims (7)

It is a reinforcing structure for a column beam frame that reinforces a column beam frame of a building,
A V-shaped or inverted V-shaped reinforcing member in which one end of two diagonal members is connected between the beams facing each other of the column beam frame is connected to the connecting end of the two diagonal members as one beam. A reinforcing structure for a column beam frame, characterized in that the two independent end portions of the two diagonal members are also pin-connected to the other beam.   The reinforcing structure for a column beam frame according to claim 1, wherein the V-shaped or inverted V-shaped reinforcing member is installed at a substantially central portion of the beam of the column beam frame.   The V-shaped or inverted V-shaped reinforcing member is used when a horizontal force is applied to the column beam frame when the connecting end of the two diagonal members is pin-joined to the approximate center of the one beam. The two diagonal members are connected at an angle perpendicular to the tangent at the center of the assumed maximum S-shaped deformation curve of the other beam, and the two independent ends are pin-joined to the other beam. The reinforcing structure for a column beam frame according to claim 1 or 2, wherein The beam constituting the column beam frame is channel steel or channel steel with a lip,
A joining plate projecting in a vertical direction from the side surfaces of the connecting end and the two independent ends of the two diagonal members constituting the V-shaped or inverted V-shaped reinforcing member; The connecting plate of the connecting end is pin-joined to the web portion of the one beam, and the joining plate of the two independent ends is pin-joined to the web portion of the other beam, The reinforcing structure for a column beam frame according to any one of claims 1 to 3, wherein the V-shaped or inverted V-shaped reinforcing member is installed in the frame.   A bent portion is formed on the joining plate, and the joining end portion and the two independent end portions of the two diagonal members constituting the V-shaped or inverted V-shaped reinforcing member are joined to the joining plate. The bent portions of the plates are joined to each other, and the joining plate protrudes in a vertical direction from side surfaces of the connecting end portions and the two independent end portions of the two diagonal members. Item 5. A reinforcement structure for a column beam structure according to item 4.   6. The column beam frame according to claim 4, wherein the joining plate of the V-shaped or inverted V-shaped reinforcing member is pin-joined to the web portion of the beam by a bolt and a nut. Reinforcement structure.   The joint plate is integrally provided with a bolt so as to protrude toward the joint surface side, the web portion of the beam is provided with a bolt hole, the bolt is passed through the bolt hole, and a nut is passed through the bolt. 7. The reinforcing structure for a column beam frame according to claim 4, wherein the joint plate is pin-joined to the web portion of the beam.

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