JPH06306949A - Bearing structure of building structure - Google Patents

Abstract

PURPOSE:To bear load firmly, to adjust the transmission of horizontal force over a truss and to balance the burden of horizontal force of a building structure. CONSTITUTION:The body of a floor just above the non-column space 18 of a building structure 11 is constituted as truss structure 19, a beam 12a is bone to the upper section of the truss structure 19, a receiving member 23 is fixed onto the top chord 20 of the truss structure 19, and a shaft body 27 downward projected toward the receiving member 23 and placed on the receiving member 23 is fastened onto the beam. An inclination is formed to a horizontal surface so that horizontal force transmitted between the top chord material 20 and the beam 12a is changed when these members 20 and 12a are displaced mutually in the horizontal direction in a receiving surface 24 receiving the underside of the shaft body 27 of the receiving member 23.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a supporting structure for a building structure, which is suitable to be applied to a floor directly above the pillar-free space when a pillar-free space is formed on a predetermined floor of the building structure. Is.

[0002]

2. Description of the Related Art For example, when a large space is provided on the middle floor of a building structure, in order to support a load applied to the large space, a large truss using a higher floor height is provided directly above the large space. Is effective.

FIG. 4 shows a building structure in which a large truss is assembled on the floor immediately above such a large space. In the figure, reference numeral 1 is a beam and reference numeral 2 is a pillar. In addition, the beam 1 divides the layers 3, 4, 5, and 6 in the vertical direction.
A pillar-less space 7 is formed in the floor 3 and the floor 4,
The frame directly above the pillarless space 7 and directly above the pillarless space 7 forms a truss structure 8.

In the truss structure 8, the beam 1 supporting the floor of the floor 5 is the lower chord member, the beam 1 supporting the floor of the floor 6 is the upper chord member, and the vertical belly member 9 is provided between the upper chord member and the lower chord member. And the oblique belly member 10 is attached.

In this building structure, even when a large load is applied to the body above the pillar-free space 7, the body directly above the pillar-free space 7 is constituted by the truss 8, so that the body is firmly held. To be done.

[0006]

However, the above-mentioned building structure has the following problems. That is, when a horizontal force acts on this building structure due to an earthquake or the like, the horizontal force is transmitted to the truss 8, and the oblique abdominal material 10 of the truss 8 functions as a brace. There are problems that stress concentrates on the parts, the rigidity distribution of the entire building structure is disturbed, and it becomes difficult to design the truss 8 and its peripheral parts.

The present invention has been made in view of the above circumstances, and can firmly support a load, adjust the transmission of horizontal force to a truss, and balance the horizontal force load of a building structure. It is intended to provide a support structure for a building structure that can be taken.

[0008]

In the support structure for a building structure according to the present invention, a frame directly above the column-free space provided on a predetermined floor of the building structure is constructed as a truss structure, and the upper part of the truss structure is formed. A beam is supported on the truss structure, a receiving member is fixed on the upper chord member of the truss structure, the beam is projected downward toward the receiving member, and a shaft body mounted on the receiving member is fixed, When the receiving surface of the receiving member that receives the lower surface of the shaft body moves relatively horizontally in the horizontal direction of the upper chord member and the beam, the inclination angle with respect to the horizontal plane changes so that the horizontal force transmitted between these members changes. It is characterized by being attached structure.

[0009]

In the supporting structure of the building structure of the present invention, when a frame above the pillar-free space is loaded, the frame is constructed as a truss structure, so that the strength of this frame is sufficiently maintained. No damage will occur.

When a horizontal force due to an earthquake or the like is transmitted to the truss structure and the beam, the horizontal force causes the shaft body of the support portion and the receiving member provided on the upper chord member to move relative to each other in the horizontal direction. At this time, since the upper surface of the receiving member has a predetermined inclination angle, the horizontal force transmitted between the shaft body and the upper chord member corresponds to the inclination angle. Therefore, when the inclination angle is set appropriately according to the balance between the strength of the members around the truss and the rigidity of the entire building structure, it is possible to suppress the concentration of stress on the truss by transmitting an appropriate horizontal force to the truss. In addition to being restrained, it is possible to suppress the load on the periphery of the truss and the imbalance of the rigidity of the entire building structure.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS.

In FIG. 1, reference numeral 11 is a building structure to which the bearing structure according to the present invention is applied, 12 ... Beams and 13 ... Pillars. Floors 14, 15, 16, 17 of building structure 11
Among them, a pillarless space 18 is formed in each of the floors 14 and 15, and the frame directly above the pillarless space 18 and directly above the pillarless space 18 is configured as a truss structure 19. A beam 12a is supported on the upper portion of the truss structure 19.

The truss structure 19 is constructed by using a beam 12b supporting the floor of the floor 16 as a lower chord member and fixing a vertical abdominal material 21 ... And a diagonal abdominal material 22. Has been done.

As shown in FIG. 2, a receiving member 23 is fixed to the upper surface of the upper chord member 20. This receiving member 23
Has a mortar-shaped smooth upper surface 24 (receiving surface) formed at a predetermined inclination angle θ with respect to the horizontal plane.
A rising surface 25 rising in the vertical direction is formed on the peripheral portion of the upper surface 24.

On the other hand, the beam 1 located above the upper chord member 20.
The lower surface of 2a projects downward and the upper surface 2 of the receiving member 23
A shaft 27, on which the lower surface 26 is placed, is fixed on the shaft 4. The lower surface 26 of the shaft 27 has the same angle as the upper surface 24 of the receiving member 23, and the lower surface 26 is in contact with the upper surface 24. In this configuration, when a weight is applied to the body above the pillar-free space 18, the body is configured as a truss structure, so that the strength of the body is sufficiently maintained and damage or the like does not occur.

In addition, an earthquake occurs and the above-mentioned building structure 11
When a horizontal external force acts on the truss structure 19 and the beam 1.
2a relatively moves in the horizontal direction, and as shown in FIG. 3, a receiving member 23 fixed to the upper chord member 20 of the truss structure 19,
A relative movement in the horizontal direction occurs between the beam body 12 and the shaft body 27 fixed to the beam 12a.

At this time, the horizontal force transmitted between the receiving member 23 and the shaft 27 is equal to the component force of the force orthogonal to the upper surface 24 because the upper surface 24 of the receiving member 23 has an inclination angle θ. Become.

The magnitude of the horizontal force transmitted is
In order to be determined by setting the inclination angle θ, for example, when θ = 0 degree: Roller bearing (horizontal force transmitted 0
%) When θ = 90 degrees: Pin bearing (horizontal force transmitted 10
By setting the tilt angle θ in the range between the set angles of 0%), it is possible to adjust the transmitted horizontal force to an arbitrary magnitude.

Accordingly, if the inclination angle θ is properly set in consideration of the condition that stress is not concentrated on the periphery of the truss structure 19 in advance, the stress is concentrated on the periphery of the truss structure 19 and the building structure is It is possible to prevent the rigidity distribution of the whole 11 from being disturbed, the building structure 11 to be twisted, and the difficulty of designing the truss structure 19 and its peripheral parts, and to balance the horizontal force load of the building structure 11. It is possible to take

[0020]

As described above, according to the supporting structure for a building structure of the present invention, when a load is applied to the frame above the pillar-free space, this frame is constructed as a truss structure. The strength of this body is sufficiently maintained and no damage or the like occurs.

When a horizontal force due to an earthquake or the like is transmitted to the truss structure and the beam, the horizontal force causes the shaft body of the support portion and the receiving member provided on the upper chord member to move relative to each other in the horizontal direction. At this time, since the upper surface of the receiving member has a predetermined inclination angle, the horizontal force transmitted between the shaft body and the upper chord member corresponds to the inclination angle. Therefore, when the inclination angle is appropriately set according to the balance between the strength of the members around the truss and the rigidity of the entire building structure, an appropriate horizontal force is transmitted to the truss structure. This prevents stress from being concentrated on the periphery of the truss structure, disturbing the rigidity distribution of the entire building structure, twisting the building structure, and making it difficult to design the truss structure and its surroundings. Therefore, it becomes possible to balance the horizontal load of the building structure.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing a building structure to which a bearing structure of the present invention is applied.

FIG. 2 is an enlarged vertical sectional view of a bearing portion in FIG.

FIG. 3 is an explanatory diagram showing a state in which a shaft body and a receiving member relatively move in FIG. 2;

FIG. 4 is a vertical cross-sectional view showing a conventional building structure having a large space inside.

[Explanation of symbols]

 11 Building Structures 12 Beams 12a Beams 12b Beams 18 Columnless Spaces 19 Truss Structures 20 Upper Chord Members 23 Receiving Members 27 Shafts

Claims (1)

[Claims] 1. A truss structure is constructed on a frame directly above a pillarless space provided on a predetermined floor of a building structure, and beams are supported on the truss structure. A receiving member is fixed to the receiving member, a beam protruding downward toward the receiving member to the beam, and a shaft body mounted on the receiving member is fixed, and a receiving surface of the receiving member for receiving a lower surface of the shaft member is An architectural structure characterized by an inclination angle with respect to a horizontal plane so that the horizontal force transmitted between these members changes when the upper chord member and the beam relatively move in the horizontal direction. Support structure for objects.