JP2007332663A - Structure of apartment house building - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a structure that is capable of further enhancing comfort and earthquake resistance and that is best applied to a flat high-rise apartment house building. <P>SOLUTION: An outer peripheral frame 1A in ridge direction is a pure rigid frame composed of outer peripheral columns 2 and outer peripheral beams 3, with the outer peripheral beams being flat beams. An inner frame 1B in the ridge direction is a rigid frame composed of inner columns 4 and inner beams 6; the column width of the inner column in span direction is equal to the beam width of the inner beam and the column width in the ridge direction is made greater than the column width in the span direction so that the inner column takes the form of a wall column; also, adjacent inner columns are connected together at necessary portions by boundary beams 7 functioning as earthquake dampers. The frame 11 in the span direction is composed chiefly of continuous earthquake-resisting walls 12 on two sides that are provided at intervals and independently of each other within the same plane as they are provided integrally with the inner columns and the outer peripheral columns on the outside of the inner columns. The continuous earthquake-resisting walls on the two sides that adjoin to each other via the inner column are connected together at necessary portions by boundary beams 13 functioning as earthquake dampers. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a structure of a building, and more particularly to a structure of a mid-to-high-rise multi-storied apartment building having a planar shape that is long in the direction of a beam.

  As is well known, the shape of a multi-storied or high-rise apartment building (generally referred to below simply as a high-rise building) is generally a square tower shape (tower). It is said that the tube structure is reasonable as its structure, but in recent years it is not a tower shape but is a long form in one direction, like a general low-rise apartment house, that is, in the long side direction. A so-called plate-shaped high-rise apartment building in which the length in a certain row direction is about several times the length in the beam-to-beam direction (span direction), which is the short side direction, and the planar shape is a horizontally long flat shape Is also being planned.

  In the case of such a plate-like apartment building, the dwelling units are arranged side by side, so the tube structure is difficult to adopt, and therefore as a structure of such a high-rise apartment building Is either a conventional two-way pure ramen structure in which both the beam crossing direction and the beam-to-beam direction frame are both rigid and rigid with columns and beams, or only the beam direction is set as the frame structure and the boundary between the beams A structure in which a large number of earthquake-resistant walls that also serve as walls is provided.

  However, in the case of a simple bi-directional pure ramen structure, a large column shape and a beam shape protrude in various places in the dwelling unit, which is not preferable. In addition, when a large number of earthquake-resistant walls are provided in the beam-to-beam direction, there may be a structural direction in which the rigidity in the beam-to-beam direction is higher than that in the cross-beam direction. Sometimes a very large force acts on the seismic wall.

Therefore, what is shown by patent document 1 as a structure suitable for a plate-shaped high-rise apartment house building is proposed, for example. This is based on a bi-directional frame structure, and is provided with multi-story shear walls at key points. In particular, two multi-story shear walls are provided independently in the same structure, and the multi-story shear walls are separated from each other. By connecting with boundary beams that function as vibration control dampers, it is possible to reduce the restrictions on the plan plan and to ensure better comfort than in the case of pure ramen structure, and it is excellent while ensuring sufficient rigidity in the inter-beam direction. The vibration control effect is obtained.
JP-A-2005-155172

  Although the structure shown in Patent Document 1 is considered to be effective for application to plate-like high-rise apartment buildings, recently, further improvement in habitability and improvement in earthquake resistance is also desired. In fact, further improvements are needed.

  In view of the above circumstances, the present invention is based on the structure as shown in Patent Document 1 and further improves on it, so that the habitability and the earthquake resistance can be further improved. The purpose is to realize an optimum structure as applied to the above.

  The present invention is a structure of a medium- to high-rise apartment building with a planar shape that is long in the direction of the beam, and the outer frame in the direction of the beam is a pure ramen frame composed of an outer column and an outer beam, and the outer beam in the outer frame is It is a flat beam, the internal frame in the direction of the beam is a rigid frame structure with internal columns and internal beams, and the column width in the inter-beam direction of the internal columns is made equal to the beam width of the internal beams and the column width of the internal columns in the direction of the beam The inner column is made larger than the column width in the inter-beam direction, and the inner column is in the form of a wall column, and adjacent internal columns are connected by boundary beams that function as vibration control dampers at important points. The frame is mainly composed of a multi-layered seismic wall with two surfaces provided independently at an interval in the same plane by being provided integrally with the inner column and the outer column outside the inner column. Through the pillar Contact with and in the key point of Shear Walls each other dihedral characterized by being connected by the boundary beams functioning as Seismic Damper.

According to the structure of the present invention, the two layers of seismic walls are independently provided on the same plane in the inter-beam direction, and the multi-layer seismic walls are connected to each other by the boundary beams at important points. The boundary beam functions as a damping damper while securing the rigidity in the beam direction by the column (wall column) and the boundary beam, and the vibration control effect in the beam direction can be sufficiently obtained. In addition, because the same boundary beams were installed at the key points of the internal ramen frame in the crossing direction, an excellent seismic control effect was obtained while securing the rigidity in the crossing direction, so that the entire building had excellent seismic performance. It is possible to ensure high structural safety and comfortable living required for high-grade high-rise apartment buildings.
In addition, since the outer peripheral beam in the outer frame frame is a flat beam, the protrusion of the beam shape can be reduced compared to the case of a normal longitudinal section beam, and the effective floor height at the outer periphery can be secured large, Since it is possible to provide a large opening near the ceiling, it is advantageous in terms of daylighting and viewing. In addition, the column width of the outer column and the inner column is the same as the beam width, so that the column shape does not protrude into the dwelling unit, and it is not only comfortable and comfortable, but also has high variability and expandability. A grade dwelling unit plan becomes possible.

  An embodiment of the present invention will be described with reference to FIGS. This embodiment is an example of application to a plate-like high-rise apartment building of about 15 stories above the ground, for example, FIG. 1 is a plan view (beam plan view) showing a frame on the standard floor, and FIG. 2 is a frame in the direction between beams. It is sectional drawing shown. Note that the scale of the building in the illustrated example assumes that the reference span in the beam direction is about 6 to 7 m, and the span in the inter-beam direction is about 5 to 10 m on both sides of an intermediate span of about 2 m. is doing.

  The floor plan of the standard floor of this building has a large number of dwelling units arranged side by side in the horizontal direction (column direction), and a central corridor is provided in the middle of the beam direction over the entire length in the column direction. In the present embodiment, the following structure is adopted corresponding to the plan.

  That is, in the present embodiment, the outer frame 1A and the inner frame 1B, which are four-frame rigid frames provided at positions on both sides of the outer peripheral part and the inner corridor, are adopted as the frame 1 in the crossing direction.

  Among the frames 1 in the beam direction, the outer frame 1A of the two planes located on the outer periphery is a pure frame frame made up of the outer column 2 and the outer beam 3, respectively. As shown in Fig. 4, the beam is a flat beam having a flat cross section with the beam width equal to or less than the beam width. Further, as shown in FIG. 1, the column width in the inter-beam direction of the outer peripheral column 2 is equal to the beam width of the outer peripheral beam 3 and the column width in the column direction is made smaller than that. The cross-sectional shape is a rectangular shape that is slightly longer in the direction between the beams.

  In addition, the two-frame internal frame 1B located on both sides of the inner corridor is based on a rigid frame structure consisting of an internal column 4 and an internal beam 6, respectively. A beam 7 is provided. The inner column 4 includes an original inner column 4 a provided at the center of the outer column 2 and an inner column 4 b provided as an intermediate column as necessary. The column width in the column direction is equal to the beam width, and the column width in the column direction is sufficiently larger than that. Therefore, as shown in FIG. Has been. The boundary beam 7 is provided at a main point of the inner beam 6 (between the original inner column 4a and the inner column 4b as an intermediate column in the illustrated example).

  As shown in FIG. 3, the boundary beam 7 has a configuration in which only a central portion of the steel material 8 is exposed by winding a steel material 8 such as an H-shaped steel as a main body and winding up both ends thereof with a highly rigid covering 9 made of reinforced concrete. By connecting these coverings 9 integrally to the internal pillars 4 on both sides, the boundary beam 7 functions as a short-span internal beam 6 in the column direction and has rigidity in the column direction together with the internal columns 4. It functions as a seismic damper (steel damper) that has a function to ensure and exerts a seismic control effect during an earthquake. That is, when the building is deformed during an earthquake and the inner pillars 4 on both sides of the boundary beam 7 are deformed so as to be displaced in the vertical direction, both ends of the boundary beam 7 are displaced in the vertical direction as shown in FIG. Thus, the exposed portion of the steel material 8 exposed at the center portion is plastically deformed, thereby absorbing and attenuating the vibration, thereby exhibiting an excellent damping effect. In addition, as the steel material 8 functioning as such a damper, it is preferable to form at least the web portion exposed at the center portion with extremely soft steel (low yield point steel or extremely low yield point steel).

On the other hand, in this embodiment, the frame 11 in the beam-to-beam direction is mainly composed of the multistory earthquake-resistant wall 12.
The multi-story earthquake-resistant wall 12 is provided at the position between the dwelling units so as to also serve as the door boundary wall, but is omitted at the position of the intermediate span where the inner corridor is provided. That is, the multi-layer earthquake-resistant wall 12 is provided integrally with the internal column 4 and the outer peripheral column 2 on the outside of the internal column 4 located on both sides of the inner corridor, and the two-layer multi-layer earthquake-resistant wall is provided. 12 are provided independently on the same surface with the intermediate span interposed therebetween. And, in the construction surface of the important point (in the illustrated example, 3 of the 8 structural surfaces), the two layers of the seismic walls 12 are connected by the boundary beam 13.
The boundary beam 13 is provided so as to cross the upper part of the central corridor, and this is configured in the same manner as the boundary beam 7 shown in FIGS. It functions as a short-span internal beam in the inter-beam direction for structurally connecting both the multi-layer shear walls 12 via the internal columns 4, and provides the rigidity in the inter-beam direction together with the multi-layer shear walls 12 and the internal columns 4. The boundary beam 13 is plastically deformed in the vertical direction and absorbs vibration energy in the event of an earthquake, thereby functioning as a damping damper, thereby obtaining a damping effect in the inter-beam direction.

In addition, as shown in FIG. 2, the slab 21 on each floor is constituted by a flat slab without a small beam, and the level of the slab 21a in the dwelling unit is lowered from the level of the slab 21b in the inner corridor so that there is no piping space in the dwelling unit. It is preferable to secure a double floor for the purpose.
In addition, although not shown, the pipe shaft as a longitudinal flow line for passing piping wiring of the facility system is installed at a position facing the central corridor together with the meter box of each dwelling unit so that maintenance can be performed from the central corridor. This is advantageous for maintenance of equipment flow and future renewal.

According to the structure of the present embodiment, the multistory earthquake-resistant wall 12 constituting the frame 11 in the inter-beam direction is provided integrally between the wall column as the inner column 4 and the outer column 2 and within the same plane. Since two independent multi-story earthquake-resistant walls 12 are connected to each other by a boundary beam 13 via an internal column 4 at a critical point, the boundary beam 13 can be used as a damping damper while ensuring rigidity in the inter-beam direction as a whole. It is possible to obtain the seismic control effect in the beam direction.
In addition, since the same boundary beam 7 is installed at the key point of the internal frame 1B in the crossing direction, an excellent seismic control effect can be obtained while securing the rigidity in the crossing direction, and therefore, the entire building is excellent in earthquake resistance. Performance can be ensured, and high structural safety and comfortable habitability required for high-grade high-rise apartment buildings can be ensured.
Of course, the types and installation positions of the boundary beams 7 and 13 are not limited to the above embodiment, but can be arbitrarily and appropriately set according to conditions such as the form and scale of the entire building and the required vibration control performance. Therefore, this structure is not limited to the plan illustrated in FIG. 1, for example, a high-rise apartment building in which two dwelling units are arranged as one unit as shown in FIG. Can be widely applied to high-rise apartment buildings of various forms and scales.

Moreover, according to the structure of this embodiment, since the outer peripheral beam 3 in the outer frame 1A is a flat beam, it is possible to ensure a large effective floor height as compared with the case where the beam is a vertically long cross section as usual, and the dwelling unit Since the beam shape does not protrude greatly on the inner peripheral portion, it is possible to provide a large opening on the outer peripheral portion up to the ceiling surface, which is advantageous in terms of daylighting and viewing.
Further, in addition to the outer peripheral beam 3 being a flat beam, the slab 21 is formed of a flat slab so that the beam shape does not protrude into the dwelling unit, and the column width of the outer peripheral column 2 is reduced to the beam of the outer peripheral beam 3. Since the column shape does not protrude into the dwelling unit by making it equal to the width and the column width of the internal column 4 equal to the beam width of the internal beam 6, when designing the allocation of the dwelling units and the dwelling unit plan A high-grade dwelling unit plan that has a high degree of freedom, a comfortable and excellent habitability, as well as a high degree of variability and expandability becomes possible.

The embodiment of the building by the structure of this invention is shown, and is a top view which shows an example of the frame of a reference | standard floor. It is sectional drawing which shows the frame of the direction between beams similarly. It is a figure which shows schematic structure of a boundary beam. It is a figure which shows the behavior at the time of the earthquake of a boundary beam. It is a top view which shows the other example of the frame of a reference floor.

Explanation of symbols

1 Frame in the column direction 1A Outer frame 1B Internal frame 2 Outer column 3 Outer beam (flat beam)
4 (4a, 4b) Internal column 6 Internal beam 7 Boundary beam 8 Steel 9 Covering body 11 Frame between beams 12 Multi-layer earthquake resistant wall 13 Boundary beam 21 (21a, 21b) Slab

Claims (1)

It is a structure of a mid-to-high-rise apartment building with a planar shape that is long in the direction of the beam,
The outer frame in the crossing direction is a pure ramen frame composed of an outer column and an outer beam, and the outer beam in the outer frame is a flat beam.
The internal structure in the column direction is a frame structure consisting of an internal column and an internal beam. It is larger than the width and the internal pillars are in the form of wall pillars, and adjacent internal pillars are connected by boundary beams that function as vibration control dampers at important points,
The frame in the direction between the beams is provided integrally with the inner column and the outer peripheral column on the outside of the inner column, respectively, so that two layers of seismic walls are provided independently and spaced within the same plane. A structure of a multi-storied residential building, characterized in that it is a main frame and two adjacent multistory shear walls are connected by boundary beams that function as seismic dampers at important points.

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