JP5238188B2 - Building units and unit buildings - Google Patents

Description

The present invention relates to a building unit and a unit building using channel steel as a beam material.

  Conventionally, a building unit using channel steel as a beam material and a unit building including the building unit are known.

  In FIG. 1, reference numeral 1 is a building unit having a box ramen structure, reference numeral 2 is a column material, reference numerals 3a and 3b are floor beam materials, reference numerals 4a and 4b are ceiling beam materials, and reference numeral 5 is a column material 2 and a floor beam material. It is a joining member for joining 3a, 3b and the ceiling beam materials 4a, 4b.

  Light groove steel is used for the floor beam materials 3a and 3b and the ceiling beam materials 4a and 4b used in this conventional example, and these light groove steels are formed in a web portion as shown in FIG. W and a pair of flange portions F, F extending in the same direction and in parallel from both lateral edges of the web portion W.

  The joining member 5 has a side plate portion 5a and a pair of substantially trapezoidal flange portions 5b and 5b extending in parallel and in the same direction from both side edges of the side plate portion 5a. It is welded to the part.

  The joint member 5 is formed with a beam receiving portion 5c having a substantially U-shaped longitudinal cross-sectional shape by the side plate portion 5a and the flange portions 5b and 5b.

  In addition, a plurality of bolt holes for fastening bolts are provided at corresponding positions on the end portion of the web portion W of the light groove steel and the side plate portion 5a of the joining member 5, respectively.

  For example, as shown in FIG. 2, the column member 2 and the ceiling beam members 4 a and 4 b are joined to the ceiling beam in a state where the end portions of the ceiling beam members 4 a and 4 b are inserted into the beam receiving portion 5 c of the joining member 5. The web portion W of the members 4a and 4b and the side plate portion 5a of the joining member 5 are fastened by bolts, and the flange portions F and F of the ceiling beam members 4a and 4b and the flange portions 5b and 5b of the joining member 5 are spotted. Join by welding.

  Then, the column material 2 and the floor beam materials 3a and 3b and the column material 2 and the ceiling beam materials 4a and 4b are joined in the same manner.

  A plurality of small beams are bridged between the floor beam members 3a and 3a and joined at both ends, and a horizontal brace is attached to the ceiling frame.

  A unit building as a building is configured by combining a plurality of building units 1 assembled in this way.

In addition, as an invention related to a building unit using channel steel, a unit building proposed by the applicant himself and a construction method thereof are known (see Patent Document 1).
Japanese Patent Laid-Open No. 2005-248689

  By the way, the unit building which consists of the building unit 1 of the box ramen structure using the light groove shape steel like a prior art example is a tough resistance type building, and as shown to Fig.3 (a), from the wife side of a building It is designed on the assumption that the building unit 1 bends and deforms when an external force F1 is applied.

  Therefore, for example, as shown in FIG. 3B, when the load from the upper floor unit 1B or the like increases, a large force F2 is applied vertically downward to the ceiling beam 4a of the lower floor unit 1A, and the lower floor unit 1A There was a possibility that the ceiling beam 4a would bend.

  Therefore, when a lip groove steel (C-shaped steel) 6 as shown in FIG. 4 (a) having higher rigidity than that of the light groove steel is used for the ceiling beam 4a of the lower floor unit 1A, as shown in FIG. 3 (c). In addition, for example, when a large external force F3 from the wife side is applied to the building unit 1 due to an earthquake or the like, the lip groove steel 6 itself is not bent so much, but the stress concentrates on the joining member 5. There was a possibility that the joint by fastening or spot welding would break.

  Further, as shown in FIG. 4B, when the lip groove steel 6 is used as a beam member, the lip portion L is a spot welding device when the lip groove steel 6 and the joining member 5 are joined. There is a possibility that workability may be impaired due to interference with S or other tools.

Therefore, a main object of the present invention is to provide a building unit and a unit building in which a joint is not broken even if the building receives a large horizontal force due to an earthquake or the like.
Another object of the present invention is a building unit and a unit building that have good joining workability between the beam material and the column material, and that the joint portion does not break even if the building receives a large horizontal force due to an earthquake or the like. Is to provide.

In order to achieve the above object , the invention described in claim 1 is a building unit having a box ramen structure in which a beam steel material and a column steel material are joined via a joining steel material, and is joined to the joining steel material. An intermediate strengthened steel material having a tough part having toughness at both ends and a rigid part having increased rigidity as compared with the both end parts is provided at an intermediate part between the two end parts, and the intermediate strengthened steel material has the toughness Only the portion is bonded and fixed to the joining steel material, and the joining steel member is formed in a U shape from a pair of flange portions provided on a side plate portion and a side edge of the side plate portion, and a pair of the side plate portions. The intermediate strengthening steel material has only the toughness portion bonded and fixed to the joining steel material in a state where the toughness portion is disposed in the beam receiving portion. The steel material includes a web portion and the web. A pair of flange portions extending in a substantially vertical direction and in parallel from both sides in the width direction of the portion and provided over the entire length direction of the web portion, and the intermediate portion excluding the both ends from the pair of flange portions. By having a pair of reinforcing plate portions facing each other and extending in the direction of approaching each other inside, it has a tough portion that does not have the reinforcing plate portion at both ends in the longitudinal direction, and between both ends in the longitudinal direction. The intermediate strengthened steel material has the web portion and the pair of flange portions of the intermediate strengthened steel material overlapped with the side plate and the pair of flange portions of the joining steel member, respectively. Further, the toughness portion is joined to the joining steel member in a state where the toughness portion is inserted into the beam receiving portion .
The invention according to claim 2 is characterized in that the intermediate strengthened steel material is used for a part or all of the beam steel material.

Further, the invention described in claim 3 is characterized by a unit building constituted by the building unit described in claim 1 or 2 .

The present invention configured as described above includes a tough portion having toughness at both ends joined to the joining steel material, and a rigid portion having increased rigidity compared to the both ends at an intermediate portion between the both ends. Since the intermediate strengthened steel material has a structure in which only the toughened portion is bonded and fixed to the joined steel material, the entire intermediate strengthened steel material bends even when a bending load is applied to the beam steel material. There is nothing, and the strength of the building unit can be enhanced.

  Further, since the intermediate strengthened steel itself has toughness at both ends, for example, even if an external force is applied to the building unit from the side of the building due to an earthquake or the like, stress does not concentrate on the joining member, and the joining member breaks. Can be prevented.

Moreover, since the intermediate strengthened steel material of the present invention can be formed by cutting and notching the lip portions (reinforcing plate portions) at both ends of the lip groove steel (C-shaped steel), the intermediate strengthened steel material can be easily manufactured. In addition, a commercially available lip groove steel (C-shape steel) can be used and introduced at a relatively low cost.

Moreover, since what is described in Claim 3 is comprised by the building unit of Claim 1 or 2, since the yield strength of a building unit is strengthened and the freedom degree of a combination of a building unit increases, unit Greater design freedom for buildings.

  Moreover, for example, when an external force, particularly a horizontal force, is applied to the unit building due to an earthquake or the like, the toughened portion bends even though a rigid portion is provided in the intermediate portion of the intermediate strengthened steel material. As a whole, bending deformation occurs, and the tough resistance type unit building constituted by this building unit exhibits excellent horizontal strength and seismic performance.

  Hereinafter, embodiments according to the present invention will be described based on examples.

<Constitution>
In FIG. 5, reference numeral 11 denotes a building unit having a box ramen structure, reference numeral 12 denotes a pillar material, reference numerals 13 a and 13 b denote floor beam materials, reference numerals 14 a and 14 b denote ceiling beam materials, and reference numeral 15 denotes a pillar material 12 and a floor beam material. It is a joining member for joining 13a, 13b and the ceiling beam members 14a, 14b.
As is apparent from FIG. 5, the building unit 11 having a box ramen structure has column members 12 at four corners . Further, as is apparent from the drawing, joining members 15 and 15 oriented in directions substantially perpendicular to each other are provided at the upper end of each column member 12. Moreover, as is apparent from FIG. 5, the column member 12 and the ceiling beam member 14 a are joined through one joining member 15 of the column member 12, and the column member 12 and the ceiling beam member 14 b are joined to each other. This is performed via the other joining member 15 of the material 12.

  Light groove steel is used for the floor beam members 13a and 13b and the ceiling beam material 14b used in the present embodiment as in the conventional example, and these light groove steels are shown in FIG. In addition, the web portion W and a pair of flange portions F and F extending in parallel in the same direction from both lateral edges of the web portion W are configured.

  On the other hand, in the ceiling beam members 14a and 14a as the beam members of the present embodiment, the steel material 16 shown in FIG. 6 in which the lip portions L at both ends of the lip groove steel 6 shown in FIG. use.

  The steel material 16 is provided with a web portion W and a pair of flange portions F, F extending in parallel and in the same direction from both lateral edges of the web portion W. A pair of lip portions L, L extending inward from the end edges of the flange portions F, F are provided.

  Since the lip portions L and L are formed in the intermediate portion of the steel material 16, it has rigidity against bending load. The intermediate portion including the lip portions L and L is defined as a rigid portion R, and the lip portions L and L Since both ends of the steel material 16 on which no is formed have toughness against bending load, the both ends not having the lip portions L and L are defined as toughness portions C.

  In this way, the rigid portion R having rigidity is provided in the intermediate portion, and the tough portion C having lower rigidity than the intermediate portion is formed at the joining end portions at both ends, so that the intermediate portion is used as a beam material. It is possible to prevent bending of the steel material 16 and to impart toughness (toughness) at the joint.

  The joining member 15 has a side plate portion 15a and a pair of substantially trapezoidal flange portions 15b and 15b extending in parallel and in the same direction from both side edges of the side plate portion 15a. It is welded to.

  The joint member 15 is formed with a beam receiving portion 15c having a substantially U-shaped longitudinal cross-sectional shape by the side plate portion 15a and the flange portions 15b and 15b.

  In addition, a plurality of bolt holes for fastening bolts are provided at corresponding positions on the end portion of the web portion W of the steel material 16 and the side plate portion 15 a of the joining member 15.

Further, as is apparent from FIGS. 5 and 7, joining members 15 and 15 are provided at the upper end portion of the column member 12 described above in directions substantially perpendicular to each other. The column member 12 and the ceiling beam member 14 a are joined through one joining member 15 of the column member 12.
That is, the column member 12 and the ceiling beam member 14a are joined by, for example, inserting the end of the ceiling beam member 14a into the beam receiving portion 15c of one of the joining members 15 shown in FIG. With the end portion of the material 14a inserted into the beam receiving portion 15c, the web portion W of the ceiling beam material 14a and the side plate portion 15a of one joining member 15 are fastened by bolts, and the flange of the ceiling beam material 14a The parts F and F and the flange parts 15b and 15b of one joining member 15 are joined by spot welding (see FIG. 8C) .

Then, the column member 12 and the floor beam members 13a and 13b and the column member 12 and the ceiling beam member 14b are joined in the same manner.

  A plurality of small beams are bridged between the floor beam members 13a and 13a and joined at both ends, and a horizontal brace is attached to the ceiling frame.

A unit building as a building is configured by combining the plurality of building units 11 assembled in this way.
<Effect>
A steel material 16 having a tough part C having toughness at both ends joined to the joining member 15 and a rigid part R having increased rigidity compared to both ends at an intermediate part between both ends is provided, and a building unit Since the steel material 16 is used for the ceiling beams 14a and 14a, the entire ceiling beams 14a and 14a made of the steel material 16 are not bent even if a bending load is applied to the ceiling beams 14a and 14a. Strength can be strengthened.

  For this reason, as shown to Fig.8 (a), even if the big load F2 is added from the upper floor unit 1B, since the ceiling beam 14a of the lower floor unit 11 has high rigidity, it does not bend.

  Further, since the steel material 16 itself has toughness at both ends, as shown in FIG. 8B, even if an external force F3 is applied to the building unit 11 from the wife side of the building due to an earthquake, for example, the joining member 15 The stress is not concentrated on the joint member 15 and the joining member 15 can be prevented from being broken.

  And since the steel material 16 can be comprised by cut | disconnecting and cutting the lip | rip part (reinforcement board part) of the both ends of a lip groove shape steel (C-shape steel), not only manufacture of the steel material 16 is easy but it is commercially available. Lip channel steel (C-shape steel) can be used and introduced at a relatively low cost.

  Moreover, since the unit building of this invention is comprised by the building unit 11, since the yield strength of the building unit 11 is strengthened and the freedom degree of the combination of the building unit 11 increases, the freedom degree of design of a unit building is high.

  In addition, for example, when an external force, particularly a horizontal force, is applied to the unit building due to an earthquake or the like, the toughened portion C bends even though the rigid portion R is provided in the middle portion of the steel material 16. The unit 11 as a whole is bent and deformed, and the tough resistance type unit building constituted by the building unit 11 exhibits excellent horizontal strength and seismic performance.

Furthermore, since the lip portion L is cut off at both ends of the steel material 16, when the steel material 16 and the joining member 15 are joined as shown in FIG. Workability is improved without interfering with S or other tools.
As is clear from FIG. 8 (c), the steel material 16 which is an intermediate strengthened steel material has a web portion W of the steel material 16 and a pair of flange portions F, F as side plates 15a and a pair of flange portions 15b of the bonded steel member 16. , 15b, the toughness portion C is inserted into the beam receiving portion 15c. 8C, the pair of flange portions F, F of the steel material 16 are welded and fixed to the pair of flange portions 15b, 15b of the bonded steel member 16 by the spot welding apparatus S. As shown in FIG.

  In addition, since the lip portion L is cut out at both ends of the steel material 16, it is easy to perform drilling in the web portion W.

  In this way, by providing the rigid portion R having rigidity in the intermediate portion, and forming the tough portion C having toughness resistance by weakening the rigidity compared to the intermediate portion at the joining end portions at both ends, While preventing the bending of the steel material 16 as the beam material, it is possible to give toughness (toughness) at the joint.

  Moreover, by using the steel material 16 as the beam material, the strength of the building unit using this steel material 16 can be strengthened, so the number of load-bearing frames and center pillars can be reduced, and the number of building processes and construction Cost can be reduced.

  Although the best embodiment of the present invention has been described in detail with reference to the drawings, the specific configuration is not limited to this embodiment, and design changes that do not depart from the gist of the present invention are not limited to this embodiment. Included in the invention.

  In this embodiment, the steel material 16 is used for the ceiling beam materials 14a and 14a as girder beams, but the steel material 16 may be used for any portion of the beam material.

  For example, as shown in FIG. 9A, a building in which a second floor building unit U2 is set back on one wife side with respect to the first floor building unit U1, or as shown in FIG. 9B. A building with a second-floor building unit U2 set back on one girder side with respect to the first-floor building unit U1, or a large size above the first-floor building unit U1 as shown in FIG. The building unit U1 on the first floor is on one wife side with respect to the ceiling beam of the building unit U1 on the first floor of the building where the balcony V is provided or the building unit U2 on the second floor as shown in FIG. You may use for the floor beam of the building unit U2 of the 2nd floor of the building provided reversely.

It is a perspective view of the building unit of the box ramen structure concerning a prior art example. It is the enlarged view of the junction part J1 of FIG. 1, and the perspective view which showed the joining state and joining method of a column material and a ceiling beam material. It is a conceptual diagram explaining the problem of the joining structure of the pillar material and beam material which concerns on a prior art example, (a) shows a mode that the building unit deform | transformed by the horizontal external force added to a wife surface, (b) is an upper floor (C) shows the bending of the ceiling beam of the lower floor unit due to the unit load. When lip groove steel is used for the ceiling beam, the column material and the ceiling beam material are joined by the external force applied to the end face. It shows how the part breaks. In addition, (a)-(c) is the side view seen from the A1 arrow direction of FIG. It is a conceptual diagram explaining the problem of the joining structure of the pillar material and beam material which concerns on a prior art example, (a) is a perspective view which shows the edge part shape of a lip groove shape steel, (b) is a lip groove in a joining member When joining shape steel, the mode that the lip part of a lip groove shape steel and a spot welding apparatus interfere is shown. It is a perspective view of the building unit of the box ramen structure which concerns on an Example. It is a figure explaining the steel materials which concern on an Example, (a) is a perspective view of steel materials, (b) is a 4th page figure. FIG. 6 is an enlarged view of a joint J2 in FIG. 5, and is a perspective view illustrating a joining state and a joining method between a column member and a ceiling beam member. It is a conceptual diagram explaining the effect of the joining structure of the pillar material and beam material which concerns on an Example, (a) shows a mode that the ceiling beam of a lower floor unit does not bend by the load of an upper floor unit, (b ) Shows a state in which the joint between the column member and the ceiling beam member does not break even when a horizontal external force is applied to the end face, and (c) shows the steel member according to the example when joining the lip channel steel to the joining member. And the spot welding apparatus can be joined without interference. In addition, (a), (b) is the side view seen from the A2 arrow direction of FIG. It is a figure which shows the usage example of the joining structure of the pillar material and beam material which concerns on an Example, (a) is the case where the upper floor unit is set back to the wife side, (b) is the upper floor unit is the girder side (C) shows a case where a large balcony is provided at the upper part of the lower floor unit, and (d) shows a case where the lower floor unit is reversely set back to the wife side. .

Explanation of symbols

11 Building unit 12 Column material (column steel material)
13a, 13b Floor beam material (beam steel material)
14a, 14b Ceiling beam material (beam steel material)
15 Joining member (joining steel)
16 Steel (intermediate strengthened steel)
W Web part F Flange part L Lip part (reinforcement plate part)
C Tough part R Rigid part

Claims (5)

A building unit having a box ramen structure in which a beam steel material and a column steel material are joined via a joining steel material,
While providing an intermediate strengthened steel material having a toughness portion having toughness at both ends joined to the joining steel material, and a rigid portion having increased rigidity compared to the both end portions in an intermediate portion between the both end portions,
In the intermediate strengthened steel material, only the tough portion is bonded and fixed to the bonded steel material ,
The bonded steel member is formed in a U shape from a side plate portion and a pair of flange portions provided at side edges of the side plate portion, and a beam receiving portion provided between the pair of flange portions of the side plate portion. Have
The intermediate strengthened steel material has the toughness portion disposed in the beam receiving portion and only the toughness portion is joined and fixed to the joining steel material,
The intermediate strengthened steel material includes a web portion, a pair of flange portions extending in a substantially vertical direction and in parallel from both sides in the width direction of the web portion, and provided over the entire length direction of the web portion, and the both end portions. In the middle part excluding the above, the reinforcing plate part is provided with a pair of reinforcing plate parts extending in the direction approaching each other inward from the pair of flange parts, so that the reinforcing plate parts are not provided at both ends in the longitudinal direction. While having a toughness part and having the pair of reinforcing plate parts in the middle part between both end parts in the longitudinal direction, the intermediate strengthened steel material includes the web part and the pair of flange parts of the joined steel member. The building unit is joined to the joining steel member in a state where the tough portion is inserted into the beam receiving portion so as to be superimposed on the side plate and the pair of flange portions .   The building unit according to claim 1, wherein the intermediate strengthened steel material is used for a part or all of the beam steel material.   A unit building comprising the building unit according to claim 1. The unit building according to claim 3 is a first-floor building unit having a box ramen structure in which a beam steel material and a column steel material are joined via a joining steel material to a ceiling beam and a floor beam, and a wife on the first-floor building unit. With a 2nd floor building unit or large balcony set back on the side or girder side,
  A unit building using the intermediate reinforcing steel material for a ceiling beam of the building unit according to claim 1 and using the building unit as a building unit on the first floor. The unit building according to claim 3 is a box ramen structure first floor building unit in which a beam steel material and a column steel material are joined via a joining steel material to a ceiling beam and a floor beam. It is equipped with a building unit on the second floor or a large balcony provided as a setback,
A unit building using the intermediate reinforcing steel material for the floor beam of the building unit according to claim 1 and using the building unit for the building unit on the second floor .