Architecture Construction
The frame structure with diagonal and vertical members and out-of-plane intermediate columns enhances damping device efficiency, reducing beam deflection and input loss without additional reinforcement, and enabling wider openings.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- TAKENAKA CORP
- Filing Date
- 2022-06-24
- Publication Date
- 2026-06-11
AI Technical Summary
Existing seismic isolation structures in buildings face inefficiencies in damping device operation due to slight deflections in beams, leading to input loss and increased reinforcement costs.
A frame structure with diagonal and vertical members, a damping device, and intermediate columns on the out-of-plane side of vertical members to resist upward or downward thrust, allowing the damping device to operate efficiently.
The damping device operates effectively, reducing deflection of beams and input loss, while avoiding the need for additional reinforcement, and allowing for wider openings and efficient operation.
Smart Images
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Abstract
Description
Technical Field
[0001] The present invention relates to a frame structure.
Background Art
[0002] Patent Document 1 discloses a technique related to a seismic isolation structure of an RC building including columns and beams connected to each other. In this prior art, on one or both of the columns or beams joined by rigid joints, a displacement member provided near an intermediate position in the axial direction where the direction of the bending moment generated in the column or beam by seismic force switches and rotates due to a change in the curvature of the column or beam, and an energy absorption mechanism attached between the other of the column or beam and the displacement member and operating by relative displacement caused by the rotational displacement of the displacement member and the deformation of the other column or beam during an earthquake to absorb vibration energy are provided.
[0003] Patent Document 2 discloses a technique related to a building seismic isolation structure for suppressing the sway of a building caused by earthquakes, winds, traffic vibrations, etc. In the seismic isolation structure of this prior art, the building has a framework formed by beam members and column members. The seismic isolation structure includes a damping damper that absorbs vibration energy by reciprocating motion, a column upper connection part that connects one end of the damping damper and the upper part of the column member, an other end connection part that connects the other end of the damping damper, and a support base that connects the other end connection part and a lower beam spanned between at least the lower ends of the column members. And the column upper connection part has a vertical plate part that contacts the side surface of the column member, an overhanging plate part that is substantially orthogonal to the vertical plate part, and a backrest member that faces the vertical plate part with the side surface of the column member interposed therebetween, and a side wall part is formed at the edge of the backrest member.
[0004] Patent Document 3 discloses a vibration control structure in which passage space is secured between column members on the intermediate floors of a building, and technology relating to a vibration control building equipped with this vibration control structure. In this prior art, the vibration control structure is installed within the column-beam frame of a mid-to-high-rise building. The vibration control building comprises a diagonal member with one end joined to the column-beam frame, a damping device arranged in parallel with the beam members constituting the column-beam frame and with one end joined to the column members constituting the column-beam frame, a vertical member with one end joined to the beam member and suspended and supported, and a connecting member to which the other ends of the diagonal member, the damping device, and the vertical member are connected.
[0005] Patent Document 4 discloses technology relating to a vibration control structure for buildings. In this prior art, a main frame structure, which forms a rigid frame structure using column members and beam members, is constructed in a rectangular shape. Intermediate columns are erected in the center of the beam members that form the lower edge of the main frame structure. The tops of the intermediate columns are connected to the vicinity of the ends of the beam members that form the upper edge via viscous dampers and elastoplastic dampers. The viscous dampers and elastoplastic dampers are arranged in series such that the viscous dampers are on the intermediate column side and the elastoplastic dampers are on the main frame side. [Prior art documents] [Patent Documents]
[0006] [Patent Document 1] Patent No. 4176620 [Patent Document 2] Patent No. 6302277 [Patent Document 3] Patent No. 7008463 [Patent Document 4] Japanese Patent Publication No. 2000-129956 [Overview of the project] [Problems that the invention aims to solve]
[0007] For example, in Patent Documents 2 and 3, it is considered that when the damping device is activated, the intermediate column resists the downward thrust of the column-side support member or the upward thrust of the vertical steel beam due to the reaction force of the damping device, thereby suppressing the deflection of the beam. Therefore, it is considered that the displacement input to the damping device due to the deflection of the beam, i.e., the input loss, is reduced compared to when there is no intermediate column.
[0008] However, even in such a structure, slight deflection occurs in the section of the beam between the column and the intermediate column due to downward thrust of the column-side support member or upward thrust of the vertical steel member, resulting in a corresponding input loss. Furthermore, even if the beam is reinforced to prevent deflection and reduce input loss, reinforcement costs will be incurred. Therefore, there is room for improvement in these respects.
[0009] In view of the above facts, the present invention aims to enable the damping device to operate efficiently. [Means for solving the problem]
[0010] The first embodiment is a frame structure comprising: a diagonal member provided within the frame and one end joined to a corner of the frame; a vertical member provided within the frame and one end joined to one of the upper beam member and lower beam member constituting the frame; a damping device provided within the frame and one end joined to one of the column members constituting the frame; a joining member that connects the other end of the diagonal member, the other end of the vertical member, and the other end of the damping device; and an intermediate column provided on the out-of-plane side of the vertical member and joined to the upper beam member and the lower beam member.
[0011] In the first embodiment of the frame structure, a damping device activates during an earthquake to control the horizontal displacement of the frame. At this time, the reaction force of the damping device causes the vertical members to push up against the upper beam members or the lower beam members to push down, but the intermediate columns resist this. As a result, the deflection of the upper or lower beam members is suppressed, and the input loss of the damping device is reduced.
[0012] In this embodiment, since the intermediate stud is provided on the out-of-plane side of the vertical member, the intermediate stud and the vertical member are in close proximity. Therefore, the intermediate stud effectively resists upward or downward thrust, allowing the damping device to operate efficiently.
[0013] The second embodiment is the frame structure described in the first embodiment, wherein the intermediate columns are provided on both outer sides in the out-of-plane direction of the vertical member.
[0014] In the second embodiment of the frame structure, intermediate columns are provided on both outer sides of the vertical members in the out-of-plane direction, so the intermediate columns more effectively resist upward or downward thrusts. Therefore, the damping device operates more efficiently.
[0015] The third embodiment is a structural frame structure according to the first or second embodiment, wherein a wall material is provided on the out-of-plane side of the frame, and an opening is provided between the other column member constituting the frame and the intermediate column in the wall material.
[0016] In the third embodiment of the frame structure, the intermediate columns are provided on the out-of-plane side of the vertical members, which allows for a wider opening. [Effects of the Invention]
[0017] According to the present invention, the damping device can be operated efficiently. [Brief explanation of the drawing]
[0018] [Figure 1] This is a front view of the frame structure of one embodiment, as seen from the Y direction. [Figure 2] (A) is a view along the line 2A-2A in Figure 1, (B) is a view along the line 2B-2B in Figure 1, and (A) is a view along the line 2C-2C in Figure 1. [Figure 3] This is a view taken along the line 3-3 in Figure 1. [Figure 4] This is a perspective view of the main part of the frame structure of one embodiment. [Figure 5] This is a schematic front view showing the frame structure of Figure 1 with wall materials installed.
Mode for Carrying Out the Invention
[0019] <Embodiment> A building to which the framework structure of an embodiment of the present invention is applied will be described. Here, two orthogonal horizontal directions are defined as the X direction and the Y direction, which are indicated by arrow X and arrow Y respectively. The vertical direction orthogonal to the X direction and the Y direction is defined as the Z direction, which is indicated by arrow Z.
[0020] [Structure] First, the structure of a building to which the framework structure of the present embodiment is applied will be described.
[0021] As shown in FIG. 1, the building 10 to which the framework structure 100 of the present embodiment is applied has a steel frame structure, and its framework 12 is composed of steel beams 20, 22 and steel columns 30, 32. In the present embodiment, the steel beams 20, 22 are made of H-shaped steel, and the steel columns 30, 32 are made of square steel pipes, but they are not limited thereto. Also, the steel beams 20, 22 of the present embodiment are main beams. These upper and lower steel beams 20, 22 support the slabs 14, 15 respectively.
[0022] Inside the framework 12, a brace 110 as an example of a diagonal member, a bundled member 130 as an example of a vertical member, and an oil damper 150 as an example of a damping device are provided.
[0023] One end 112 of the brace 110 is joined to the corner 25 of the steel column 30 on the left side and the upper steel beam 20 in the framework 12 via a gusset plate 26. The bundled member 130 is arranged along the vertical direction, and its upper end 132 is joined to the upper end 132 of the upper steel beam 20 constituting the framework 12. The lower end 134 of the bundled member 130 is located above the lower steel beam 22. In the present embodiment, the brace 110 and the bundled member 130 are made of H-shaped steel, but they are not limited thereto.
[0024] The oil damper 150 is positioned above the lower steel beam 22 along the X direction. One end 152 of the oil damper 150 is fixed to the left steel column 30 in the figure via a steel fixing member 36.
[0025] As shown in Figures 1 and 4, the other end 114 of the brace 110, the lower end 134 of the support member 130, and the other end 154 of the oil damper 150 are joined by a connecting member 160. In this embodiment, the connecting member 160 is made of steel. The connecting member 160 is welded to the other end 114 of the brace 110 and the lower end 134 of the support member 130, and the other end 154 of the oil damper 150 is joined by a joining mechanism which is not shown in the figure. Note that in Figure 4, the brace 110 and the oil damper 150 are omitted from the illustration for clarity.
[0026] As shown in Figures 1, 2(C), and 4, the intermediate columns 200 are provided on both outer sides of the beam member 130 in the out-of-plane direction. As shown in Figures 1, 2(A), and 2(B), the upper ends 202 of the two intermediate columns 200 are joined to the side surface of the upper steel beam 20, and as shown in Figures 1 and 4, the lower ends 204 are joined to the side surface of the lower steel beam 22. In this embodiment, the intermediate columns 200 are made of H-shaped steel, but are not limited to this.
[0027] Note that Figure 2(A) is a view taken along the line 2A-2A in Figure 1, but it is a diagram assuming that the upper floor slab 14 and upper floor studs 200 are absent. Also, in Figure 2(C), the oil damper 150 is schematically shown with dashed lines.
[0028] In this embodiment, as shown in Figure 1, diaphragms 210 are provided at the upper end 202 and lower end 204 of the stud 200, with the plate thickness direction (out-of-plane direction) oriented vertically (see also Figures 2(A) and 4). The diaphragms 210 are joined to the stud 200 and the steel beams 20 and 22 (see also Figures 2(A) and 4). Furthermore, in this embodiment, as shown in Figures 1, 2(A), and 2(B), a diaphragm 136 is provided and joined to the upper end 132 of the support member 130 of the steel beam 20, with the plate thickness direction (out-of-plane direction) oriented in the X direction. Note that the arrangement and number of diaphragms 210 and 136 are examples only and are not limited thereto.
[0029] Here, the stud 200 may be divided into upper and lower sections, and the upper and lower sections may be rigidly joined with sprite plates and bolts. By making the stud 200 such a structure, the ease of construction is improved.
[0030] As shown in Figure 2(A), wall members 250 are provided on both sides of the frame 12 in the out-of-plane direction. The wall members 250 are fixed to the intermediate columns 200, steel beams 20, 22, and steel columns 30, 32 via stays and the like (not shown). Note that the wall members 250 are shown only in Figures 2(A) and 4.
[0031] As shown in Figure 5, the wall material 250 has a passageway 252 formed on the right side of the figure, which is an example of an opening. The passageway 252 is formed between the stud 200 in the wall material 250 and the steel column 32 on the right side of the figure. Note that the brace 110 and oil damper 150 are not shown in Figure 5.
[0032] As shown in Figure 1, the same structural frame 100 is applied to multiple floors in the building 10 of this embodiment. In other words, the structural frames of the floors above and below the current floor in Figure 1 are of the same structure.
[0033] <effect> Next, the operation and effects of this embodiment will be described.
[0034] In the framing structure 100, the oil damper 150 activates during an earthquake to suppress the horizontal displacement of the frame 12. At this time, the reaction force of the oil damper 150 causes the support members 130 to push up against the upper steel beam 20, but the intermediate columns 200 resist this. As a result, the deflection of the steel beam 20 is suppressed, and the input loss of the oil damper 150 is reduced.
[0035] In the frame structure 100, the intermediate columns 200 are provided on the out-of-plane side of the support members 130, so the intermediate columns 200 and the support members 130 are in close proximity. Therefore, the intermediate columns 200 effectively resist the upward thrust of the support members 130, and the oil damper 150 operates effectively.
[0036] Furthermore, in this embodiment, since intermediate posts 200 are provided on both outer sides of the support member 130, the intermediate posts 200 more effectively resist upward thrust. Therefore, the oil damper 150 operates even more effectively.
[0037] Furthermore, the intermediate column 200 restricts the outward displacement of the lower end portion 134 of the support member 130 in the out-of-plane direction when the oil damper 150 is operating. Therefore, in this respect as well, the input loss of the oil damper 150 is reduced, and the oil damper 150 operates effectively.
[0038] Furthermore, in the frame structure 100 of this embodiment, the intermediate columns 200 are provided on the out-of-plane side of the support members 130, which allows for a wider width (width in the X direction) of the passageway 252.
[0039] Here, we will explain this in comparison to a comparative structural structure in which the intermediate column 500 shown in Figure 3 is provided between the support member 130 within the frame 12 and the steel column 32 on the right side (see Figure 1).
[0040] The support member 130 pushes up between the intermediate column 500 and the left steel column 30 (see Figure 1) in the steel beam 20. As a result, a slight deflection occurs in the part of the steel beam 20 between the steel column 30 and the intermediate column 500, and this causes an input loss in the oil damper 150.
[0041] In contrast, in the frame structure 100 of this embodiment, the intermediate columns 200 are provided on the out-of-plane side of the beam members 130, and the intermediate columns 200 and the beam members 130 are in close proximity. Therefore, the deflection of the steel beam 20 is suppressed more effectively than in the comparative example, and the input loss of the oil damper 150 is reduced compared to the comparative example.
[0042] Furthermore, in order to reduce the input loss of the oil damper 150 to the same extent as the frame structure 100 of this embodiment, the configuration of the intermediate column 500 in the comparative example in Figure 1 requires reinforcement of the steel beam 20, which will incur additional reinforcement costs.
[0043] Thus, in this embodiment, the deflection of the steel beam 20 is more effectively suppressed than in the comparative example, so reinforcement of the steel beam 20 is unnecessary or, if necessary, can be simple. Therefore, in this embodiment, the oil damper 150 can be operated more efficiently than in the comparative example.
[0044] Furthermore, in the case of the comparative example stud 500, it is necessary to provide a restricting mechanism that restricts the outward displacement of the lower end portion 134 of the support member 130 in the out-of-plane direction when the oil damper 150 is activated.
[0045] In contrast, the intermediate column 200 restricts the outward displacement of the lower end portion 134 of the support member 130 in the out-of-plane direction when the oil damper 150 is activated, so a restricting mechanism does not need to be provided.
[0046] Therefore, in this respect as well, the frame structure 100 of this embodiment can operate the oil damper 150 more efficiently than the comparative example.
[0047] Furthermore, in the comparative example, the intermediate post 500 is positioned closer to the steel column 32 than the support beam 130. Therefore, the width (X-direction width) of the passage 252 cannot be made wider between the intermediate post 500 and the left steel column 30 (see Figure 1) compared to the case where the intermediate post 200 is provided outside the out-of-plane direction of the support beam 130, as in this embodiment. In other words, the width (X-direction width) of the passage 252 can be made wider in this embodiment than in the comparative example.
[0048] <Other> Furthermore, the present invention is not limited to the embodiments described above.
[0049] For example, in the above embodiment, the intermediate posts 200 were provided on both outer sides of the support member 130 in the out-of-plane direction, but the invention is not limited to this. The intermediate posts 200 may be provided on only one outer side of the support member 130 in the out-of-plane direction. In this case, it is desirable to provide a restricting mechanism to restrict the out-of-plane displacement of the lower end portion 134 of the support member 130. Even when intermediate posts 200 are provided on both outer sides of the support member 130 in the out-of-plane direction, as in the above embodiment, a restricting mechanism to restrict the out-of-plane displacement of the lower end portion 134 of the support member 130 may also be provided.
[0050] Furthermore, in the above embodiment, for example, a passageway 252 is formed between the intermediate column 200 and the steel column 32 of the frame 12, but this is not the only possible configuration. For example, other openings besides the passageway 252, such as windows, may be formed. Alternatively, no openings may be formed at all.
[0051] Furthermore, although the above embodiment applied the structural frame 100 over multiple floors, it is not limited to this. The structural frame 100 may be applied to only specific floors.
[0052] Furthermore, for example, in the above embodiment, the upper end 132 of the support member 130, which is an example of a vertical member, was joined to the upper steel beam 20, but it is not limited to this. The lower end 134 of the support member 130 may be joined to the lower steel beam 22. In this case, when the oil damper 150, which is an example of a damping device, is activated, the support member 130 pushes down on the lower steel beam 22, but the intermediate column 200 resists this.
[0053] Furthermore, although an oil damper 150 was used as the damping device in the above embodiment, it is not limited to this. Other damping devices besides the oil damper 150 may also be used.
[0054] Furthermore, although the frame 12 was made of steel in the above embodiment, it is not limited to this. It may also be made of materials other than steel, such as reinforced concrete, steel-reinforced concrete, or wood.
[0055] Furthermore, the present invention can be implemented in various forms without departing from the spirit of the invention. [Explanation of Symbols]
[0056] 10 Buildings 12 Frame 20. Steel beam (upper beam member) 22 Steel beam (lower beam member) 25 Corner 30 Steel column (one of the column members) 32 Steel column (the other column member) 100 Frame structure 110. Braces (an example of diagonal braces) 112 One end 114 Other end 130. Support members (an example of vertical members) 132 Upper end (one end) 134 Lower end (other end) 150 Oil damper (an example of a damping device) 152 One end 154 Other end 160 Joining member 200 studs 202 Upper end 204 Lower end 250 wall materials 252 aisle
Claims
1. A diagonal member provided within the frame, with one end joined to a corner of the frame, A vertical member provided within the frame, with one end joined to one of the upper beam member and the lower beam member constituting the frame, A damping device provided within the frame, with one end joined to one of the column members constituting the frame, A joining member that connects the other end of the diagonal member, the other end of the vertical member, and the other end of the damping device, An intermediate column is provided on the out-of-plane side of the vertical member, joined to the upper beam member and the lower beam member, and suppresses the deflection of the upper beam member or the lower beam member, A structural frame equipped with [the following features].
2. The aforementioned studs are provided on both outer sides of the vertical member in the out-of-plane direction. The frame structure according to claim 1.
3. A wall material is provided on the out-of-plane side of the aforementioned frame. An opening is provided between the other column member and the intermediate column that constitute the frame in the wall material. The frame structure according to claim 1 or claim 2.