JP2003049501A - Bearing wall structure by steel-framed unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bearing wall structure in which the assembled joined state of steel-framed units having extremely high accuracy is obtained only by assembling each unit so as to be mutually joined on a sill beam, dimensional accuracy need not be adjusted every time the units are joined, dimensional coordination by a bolting can be treated by extremely short numbers and the execution of works is simplified and the term of works can be shortened. SOLUTION: The bearing wall structure is composed of a plurality of the column type steel-framed units 1 and 21 consisting of column members 2, beam members 3 and angle braces 4 and a singular number of the column type steel- framed units 22, 28 and 29. Each steel-framed unit is mutually combined and connected extremely simply and efficiently at a site by installing vertical type connecting fittings 6 and 8 mutually engaged with the lower ends of the column members 2 of these steel-framed units and the sill beams 7 while mounting horizontal type connecting fittings 9 and 27 joined with the symmetric sections of mutually separate members to the outsides of the column members 2 and the front ends of the beam members 3 and 24.

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a load-bearing wall structure composed of a steel frame unit and formed using a square pipe or the like. 2. Description of the Related Art As a load-bearing wall structure used in a building having a lightweight steel structure, a column member and a beam member are connected to each other by means such as bolts or welding, and are surrounded by the column member and the beam member. There are known structures such as forming a steel frame unit by arranging a brace in an inner portion, or providing a plate material in an inner portion surrounded by a column member and a beam member to form a wall panel. [0003] For example, as such a load-bearing wall structure, there is a construction panel disclosed in JP-A-10-266334. This panel is composed of a vertical wall construction panel provided with braces on the inner part of an outer frame formed in a rectangular shape, and a horizontal wall construction panel having the same structure as this panel, and these panels are connected with connecting members such as C-shaped steel. The building is constructed by connecting bolts through. [0004] In this case, since the vertical wall construction panel and the horizontal wall construction panel can be used to construct a building only by fixing them with bolts via C-shaped steel, the construction is simple and the combination of panels is easy. In addition, there is an advantage peculiar to a panel member that a building can be constructed in any form. [0005] However, Japanese Patent Laid-Open No.
The construction panel of No. 0-266334 has a steel outer frame at the periphery which is comparable to a beam or a column, and the panel itself has to maintain a predetermined strength. Is extremely large, and the connecting means for supporting such a heavy panel must be rugged, which causes a problem that the weight of the whole building is increased and the price is high. . Further, the vertical wall construction panel in the construction panel is constructed so that the panels are adjacent to each other, so that there is a problem that the outer frames of the panels are adjacent to each other and the shape becomes large. In addition, the part of the horizontal wall construction panel laid on the floor facing the outer wall has an outer wall comparable to a beam or a pillar because the lower side of the vertical wall construction panel on the floor overlaps the upper side of the vertical wall construction panel on the lower floor. Since the frame members are gathered more than necessary, the structure is enlarged, and the structure is wasteful in terms of resource saving and economy. [0007] Further, although the dimensional accuracy of the panel is improved by being manufactured at the factory, the panels are joined together by inserting a bottle into a bottle hole formed in the panel and connecting means and tightening the bottle. Fixed structure
Inevitably, the bottle hole must be slightly larger than the bottle diameter, so there is a danger that the joints will shift. There was a problem that it did not proceed. SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems of the conventional load-bearing wall structure of a steel frame unit and rationalizes the form of the unit, thereby reducing the weight and weight of the unit. The aim is to provide a load-bearing wall structure that can be expected to be recyclable, and is economical, has high dimensional accuracy, and can streamline design and construction using such a unit. . The bearing wall steel frame unit according to claim 1 of the present invention is a bearing wall structure formed by joining steel frame units arranged on a base beam, as a concrete means for solving the above-mentioned problems. The steel frame unit includes a plurality of column members parallel to each other, a plurality of beam members connecting between the column members, and an inner portion surrounded by the column members and the beam members. A multi-column type steel frame unit including a mountain-shaped brace that reaches the one column member again from the member through the other column member, one column member, and a plurality of columns arranged between the column members. A single column type steel frame unit comprising: a beam member; and an inner portion surrounded by the column member and the beam member, a mountain-shaped brace extending from the tip of one beam member to the tip of the other beam member via the column member. From the combination with In the plural-column type steel frame unit and the single-column type steel frame unit, the lower end of the column member and the base beam where the lower ends of the column members are located are symmetrically provided with hook-shaped engagement surfaces that engage with each other. A hook-shaped engagement that engages with the outside of the column member to which one end of the beam member is connected in the multi-column type steel frame unit, and the tip of the beam member in the single column type steel frame unit. A vertical connection metal fitting at the lower end of the column member in each of the steel frame units and a vertical connection metal fitting on the base beam are joined, and a column member outside in each of the steel frame units is provided. And the horizontal connection metal fitting on the outer side of the column member or the horizontal connection metal fitting at the tip of the beam member in another adjacent steel frame unit. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A bearing wall structure according to the present invention will be described with reference to an embodiment shown in the drawings. As a steel unit used in the bearing wall structure of the present invention, as shown in FIG. There are two types: a multi-column type steel frame unit arranged on the base beam 7 laid thereon and forming a wall structure, and a single column type steel frame unit as shown in FIG. First, among the two steel frame units, the A-type multi-column type steel frame unit 1 shown in FIG. 1A will be described. This steel frame unit 1 is used for a two-story building, A pair of column members 2 and 2 having a height of up to one another, an upper beam member 3a connecting between upper end portions of these column members 2 and 2, and an intermediate member located at a height near the ceiling on the first floor. And a beam member 3b. The portion of the steel frame unit 1 surrounded by the column members 2 and the beam members 3 reaches the one column member 2 again via the other column member 2 facing one column member 2 for each floor. Such a mountain-shaped brace 4 is provided, and a plurality of vertical bars 5 are provided between the two column members 2.
Are arranged at appropriate intervals so as to be joined to the upper beam member 3a, the intermediate beam member 3b, and the brace 4. The B-type steel unit 21 shown in FIG.
Is basically the same as an A-type unit in a configuration including a pair of parallel column members 2, 2 and a plurality of beam members 3a, 3b connecting the column members 2, 2. Is different from the A-type unit in that the width of the beam member 3 is half the length of the beam member 3 of the A-type steel frame unit 1 and one vertical bar 5 is provided. I have. On the other hand, the structure of the steel frame unit shown in FIG. 2 will be described. The steel frame unit in this case relates to a single column type steel frame unit in which only one column member 2 is arranged on one side. There are embodiments of a C-type steel frame unit 22 shown in FIG. 2A, a D-type steel frame unit 28 shown in FIG. 2B, and an E-type steel frame unit 29 shown in FIG. 2C. The C-type steel frame unit 22 shown in FIG.
A column member 23 that is disposed only on one side,
Plural beam members 24a, 24b, 24c crossing 3
And a portion surrounded by the column member 23 and the beam members 24a, 24b, 24c has a chevron shape which connects between one column member 23 and the tip of each beam member 24a, 24b, 24c for each floor. Are provided, and three vertical bars 26 are arranged in parallel with the column member 23 at appropriate intervals. Further, the D-type steel frame unit 28 shown in FIG. 2B is half the width of the C-type steel frame unit 22, and the E-type steel frame unit 29 shown in FIG. The width is set to an intermediate width between the C-type steel frame unit 22 and the D-type steel frame unit 28. As shown in FIGS. 4 and 5, each of the column members 2 and 23 in the plural column type steel frame units 1 and 21 and the single column type steel frame units 22, 28 and 29 are symmetrical with each other at the lower end. A vertical connecting metal fitting 6 having a hook-shaped engaging surface 6a that engages with a natural surface is provided, while the hook-shaped vertical connecting metal fitting 6 of the column member 2 is provided on the base beam 7. A vertical connection metal fitting 8 having a hook-shaped engagement surface 8a for engaging with the engagement surface 6a is projected in a symmetrical direction at a predetermined interval, and a vertical connection at the lower end of the column member 2 is provided. Fitting 6 to base beam 7
The respective steel frame units are erected on the base beam 7 by engaging with the vertical connection fittings 8 on the base. As shown in FIGS. 4, 6 and 7, on the outside of the column members 2 and 23 of the plural column type steel frame units 1 and 21 and the single column type steel frame unit 22, as shown in FIGS. A horizontal connecting metal fitting 9 having a hook-shaped engaging surface 9a for engaging with a horizontal surface is provided, and the horizontal connecting metal fitting is provided at the tip of each beam member 3 in the single column type steel frame units 22, 28, 29. 9, a horizontal connection fitting 27 having a hook-shaped engagement surface 27a for engaging with the hook-shaped engagement surface 9a is protruded in a symmetrical direction. By engaging with the horizontal connecting metal fittings 9 outside the members 2 and 23, adjacent steel frame units are joined to each other. As shown in FIG. 3, the A type steel frame unit 1 has a column member 2 and a beam member 3 of 10 cm × 10 cm.
cm square steel pipe, brace 4 is 10cm x 5c
m, the width of each member of the steel frame unit 1 is made constant (10 cm), so that the side surfaces of the steel frame unit 1 are aligned on the same surface, and the interior / exterior panel is easily attached. Has become. Further, another type of steel frame unit is made of a material having a similar standard. The vertical connecting fitting 6 provided at the lower end of the column member 2 and the vertical connecting fitting 8 provided on the base beam 7 are:
As shown in FIG. 4 and FIG. 5, the brackets are formed such that metal fittings of the same shape are symmetrically mounted so as to face each other.
For example, the shape of the vertical connection fitting 6 at the lower end of the column member 2 will be described. The metal fitting 6 includes a square substrate 12 having the same shape as the lower end section of the column member 2, and both sides of the substrate 12. A pair of left and right side plates 13 extending vertically downward from the side, and between the both side plates 13, the two side plates 1
3 and a partition plate 10 that is provided perpendicularly to and orthogonal to the partition plate 3. In addition, the left and right side plates 13 have a depth h of a main part excluding an upper end base part 13a, and the depth width h
Is reduced to half of the depth H on either side. On one side of the upper part of the left and right side plates 13,
The upper inclined edge 14a extending obliquely downward at an angle smaller than 90 degrees with respect to the vertical partition plate 10 and the lower end of the partition plate 10 are also inclined at an angle smaller than 90 degrees with respect to the partition plate 10. Downward inclined edge 14b extending upward
Are provided. The lower end of the partition plate 10 is provided with a support surface 11 bent obliquely upward at an angle smaller than 90 degrees so as to form the same surface as the lower inclined edge 14b. A bottle hole 20a for inserting the 20 is provided. On the other hand, a horizontal connection fitting 9 provided outside the column member 2 to which one end of the beam member 3 is connected, and a symmetrical hook-shaped engagement member protruding outside the column member of an adjacent similar steel frame unit. As shown in FIGS. 4, 6, and 7, the horizontal connection fitting 27 having a mating surface is formed by symmetrically attaching fittings having the same shape so as to face each other. Either of the above horizontal connection fittings,
For example, the shape of a horizontal connection fitting 9 provided outside the pillar member 2 to which one end of the beam member 3 is connected will be described. This fitting 9 is welded to the side surface of the pillar member 2. A substrate 18 having the same width as the side surface of
A pair of inclined surfaces 15, 16 extending at the same angle along the length direction of the beam member 3 from both sides of the beam member 3, and these inclined surfaces 15,
And a side plate 19 extending from the substrate 18 along both sides of the inclined surface portions 15 and 16 and the bonding surface 17. In addition, the said inclined surface part 1
The joint surface 17 between 5 and 16 is provided with a bottle hole 20a through which the bottle 20 is inserted. Next, the steps of assembling the steel frame unit will be described. First, as shown in FIGS.
On the vertical connection fitting 8 provided at the corner of the base beam 7,
The vertical connection fittings 6 provided at the lower ends of the two column members 2 in the type multi-column type steel frame unit 1 are connected, and the upper and lower metal fittings 6 and 8 are fixed by bolts 20 respectively. Next, as shown in FIGS. 4 and 8,
On another side of the base beam 7, a C-type single column type steel frame unit 22 is arranged. At this time, a horizontal connection metal fitting 9 is protruded outside one of the column members 2 in the A type steel frame unit 1. Therefore, the horizontal connection fitting 2 provided at the tip of the beam member 24c in the C-type steel frame unit 22 is provided.
7 is dropped onto the horizontal connection fitting 9 so as to be connected. At this time, the vertical connection fitting 6 provided at the lower end of the column member 23 of the C type steel frame unit 22 is connected to the vertical connection fitting 8 protruding from the base beam 7. Then, the horizontal connection fittings 9 and 27 and the vertical connection fittings 6 and 8 are fixed by bolts 20, respectively. On the other hand, FIG. 9 shows a case where a plurality of A-type steel column units 1 and two sets of E-type single-column steel frame units 29 are arranged on a base beam 7 intersecting in a plane T-shape. This is an example. In this case, first, the A-type steel frame unit 1 is arranged on the inner base beam 7b that intersects the outer base beam 7a at right angles.
On both left and right outer surfaces of the column member 2 located above, horizontal connecting fittings 9 are protruded. Next, a pair of E-type steel frame units 29 are arranged on the outer base beam 7a so as to sandwich the column member 2 of the A-type steel frame unit 1 from left and right, and the beam member 24c
Is connected to the A-type steel frame unit 1 by dropping the horizontal connection fitting 27 provided on the tip of the A type steel frame unit 1. At this time, the vertical connection fitting 6 provided at the lower end of the column member 23 of the E-type steel frame unit 29 is used.
Is connected to the vertical connection fitting 8 protruding from the base beam 7. Then, the horizontal connection fittings 9 and 27 and the vertical connection fittings 6 and 8 are fixed with bolts 20, respectively. FIG. 10 shows a B-type multi-column type steel frame unit 21 on one side of a corner of the base beam 7.
This is an example in which a C-type single column type steel frame unit 22 is combined on the other side. In this case, after arranging a B-type steel frame unit 21 on one side of the base beam 7, the case of FIG. Similarly, a C-type steel frame unit 22 a is arranged on the other side of the base beam 7, and a horizontal connection fitting 9 provided outside the column member 2 of the B-type steel frame unit 21,
The horizontal connection fitting 27 at the tip of the beam member 24 of the C-type steel frame unit 22a is connected, and another C-type steel frame unit 22b is arranged next to the C-type steel frame unit 22a. The horizontal connection fitting 27 at the tip of the member 24 is connected to the horizontal connection fitting 9 provided on the column member 23 of the steel unit 22a. In a portion where the opening / closing portion occupies a large portion and the space of the wall is small, such as the veranda side of a house, the width of the steel frame unit arranged at the corner of the base beam 7 may be small. In such a case, after arranging the B-type steel frame unit 21, the D-type steel frame unit 28 may be connected to the steel frame unit 21.
Depending on the wall configuration of the building, an A-type to E-type steel unit can be appropriately selected and used. In the above embodiment, a load-bearing wall used for a two-story building is assumed.
If the E-type steel unit is changed to half the height, it can be applied to a single-story steel unit. As described above, the load-bearing wall structure of the present invention is a multi-column type steel frame unit of A type or B type as a steel frame unit composed of a column member, a beam member and a chevron brace. And a C-type, D-type, and E-type single column-type steel frame unit, and a vertical connection fitting that engages with the lower end of the column member and the base beam is provided. At the front end, horizontal connecting fittings that are joined to symmetrical parts of different members are provided, making it easy and efficient to combine and connect each steel frame unit on site and have sufficient strength Can be demonstrated. Further, in this load-bearing wall structure, as means necessary for assembling the steel beam unit, the lower end of the column member and the base beam are joined by symmetrical vertical connection fittings which engage with each other. Since the outside of the member and the tip of the beam member and the symmetrical portion of another member adjacent to each other were structured to be joined by symmetrical horizontal fittings that engage with each other, the steel frame units were assembled to each other. At the point of time, that is, before each steel frame unit is integrally joined by bolts, the dimensional accuracy of the joined state can be increased. Therefore, according to this load-bearing wall structure, it is not necessary to frequently adjust the dimensional accuracy every time a steel frame unit is assembled.After assembling a plurality of steel frame units, if a very short number of adjustments are performed and then bolting is performed. Since it is good, there is an advantage that the construction is simple and the construction period can be shortened.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory view showing the shape of a multi-column type steel frame unit constituting a load-bearing wall structure of the present invention. FIG. 2 is an explanatory view showing the shape of a single-column type steel frame unit constituting the load-bearing wall structure of the present invention. FIG. 3 is a sectional view taken along line AA of the A-type steel frame unit shown in FIG. 1; FIG. 4 is a perspective view showing a connection structure between a column member and a base beam, and a column member and a beam member of a steel frame unit. FIG. 5 is a sectional view of a main part showing a connection structure between the column member and the base beam shown in FIG. 4; FIG. 6 is a sectional view of a main part showing a connection structure between the column member and the beam member similarly shown in FIG. 4; FIG. 7 is a perspective view showing a connection structure of an upper end portion of a column member in the steel frame unit. FIG. 8 is a perspective view showing an example of a joint state of a plurality of column-type steel frame units and a single column-type steel frame unit at corners of a base beam. FIG. 9 is a perspective view showing an example of a joint state of a base beam T-shaped portion of the steel frame unit. FIG. 10 is a perspective view showing another example of the joint state of the steel frame unit at the corner of the base beam. [Explanation of Signs] 1: Multi-column type steel frame unit (A type) 2: Column member 3: Beam member 4: Brace 5: Vertical bar 6: Vertical connection fitting 7: Base beam 8: Vertical connection fitting 9: Horizontal type Joining fitting 10: Vertical portion 11: Bearing surface 12: Substrate 13: Side plate 14a: Upper inclined edge 14b: Lower inclined edge 15, 16: Inclined surface portion 17: Joint surface 18: Substrate 19: Side plate 20: Bolt 20a: Bolt Hole 21: Multiple column type steel frame unit (B type) 22: Single column type steel frame unit (C type) 23: Column member 24: Beam member 25: Brace 26: Vertical bar 27: Horizontal connection fitting 28: Single column type steel frame unit (D type) 29: Single column type steel frame unit (E type)

Claims (1)

Claims 1. A load-bearing wall structure formed by joining steel units arranged on a base beam, wherein the steel unit comprises a plurality of column members parallel to each other,
A plurality of beam members connecting between these pillar members, and an inner portion surrounded by the pillar members and the beam members, from one pillar member via the other pillar member to reach the one pillar member again. A multiple column type steel frame unit having a mountain-shaped brace, a single column member, a plurality of beam members arranged between the column members, and an inner portion surrounded by the column member and the beam member,
A plurality of column-type steel units including a single column-type steel frame unit having a chevron-shaped brace that reaches from the tip of one beam member to the end of the other beam member through the column member; The lower end of the column member and the base beam where the lower ends of these column members are located, provided with symmetrical vertical connection fittings having hook-shaped engagement surfaces that engage with each other; A symmetrical horizontal connection fitting having hook-shaped engagement surfaces that engage with each other is provided at the outside of the column member to which one end of the beam member is connected in the type steel frame unit, and at the tip of the beam member in the single column type steel frame unit. The vertical connection fitting at the lower end of the column member in each of the steel frame units and the vertical connection metal fitting on the base beam are joined, and the horizontal connection fitting outside the column member in each of the steel frame units is connected to another adjacent steel unit. Bearing wall structure by steel unit, characterized in that the post member outer lateral fitting or is the lateral fitting of the tip of the beam members are joined in.