JP3360230B2 - Framed braces and cross braces - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a brace and a cross brace particularly suitable for a frame structure supporting a glass curtain wall.

[0002]

2. Description of the Related Art FIGS. 16 and 17 show examples of this kind of frame structure. (A) of each figure is a top view, (b) is a side view seen from the outside. These frame structures are composed of a column 1 and a beam 2, and a cross brace 3 is arranged along a diagonal line in a square surrounded by the column 1 and the beam 2. The cross brace 3 is arranged in a plane where the column 1 and the beam 2 are present (hereinafter, referred to as a column-beam existing plane), and has four column-beam joints 4A, 4B, 4C, and 4D in the same plane. Among them, the first brace 3A stretched between two points 4A and 4C obliquely opposed to each other
And the second brace 3B stretched between the remaining two points 4B and 4D crossing each other at a middle point in the length direction. Here, each of the braces 3A and 3B is made of two section steels each having a length obtained by dividing the entire length into two, and is mutually linearly joined to each other on the joining plate 5 arranged at the intersection.

The cross braces 3 are provided to counter horizontal forces in the in-plane direction of the beam-existing surface. Apart from this, the frame structure has a glass curtain wall (not shown). A stud 6 and a windproof beam 7 are provided for transmitting wind pressure, that is, a force in a direction orthogonal to the column beam existing surface, to the columns 1 and 2 as the structural main frames.

[0004]

By the way, conventionally,
Since the horizontal force in the column-beam existing plane is received by the cross brace 3 and the wind pressure is received by the studs 6 and the windproof beams 7, the cross-sectional dimensions of the studs 6 and the windproof beams 7 are increased. For this reason, studs and wind-resistant beams located inside the transparent glass curtain wall may hinder the transparent image of the curtain wall, and there is room for improvement.

The present invention has been made in view of the above circumstances, and in order to realize a transparent image or a transparent interior space, a frame structure in which studs and wind-resistant beams can be constituted by members as small as possible. The purpose of the present invention is to provide braces and cross braces.

[0006]

The brace according to the first aspect of the present invention is stretched between diagonally opposed beam-column joints within a specific beam-existing surface of a framed structure composed of columns and beams. A brace of a frame structure having a gradient in a direction perpendicular to the column-beam-existing surface, and supporting a support member receiving a force in a direction perpendicular to the column-beam-existing surface at its longitudinal middle part. Ah
A pair of substantially parallel joints both ends of which are joined to the beam-column joint
The wire is provided at the middle portion in the longitudinal direction of the wire.
A rod-shaped compressed material that extends the distance between the pair of wires is placed in front of its axis.
Each wire rod is sandwiched in the direction orthogonal to the
Engaged, whereby the point of engagement is used as a turning point.
A pair of wires is shaped like a diamond with prestressed
And at one end of the compression material,
Supports a support member that receives a force in the direction perpendicular to the beam
It is characterized by having.

[0007]

[0008]

According to a second aspect of the present invention, there are provided a cross brace, wherein two sets of the brace according to the first aspect are arranged along two diagonal lines of a square surrounded by columns and beams having a frame structure, and each of the braces is disposed at an intermediate portion in each longitudinal direction. Arranged in a cross shape, a common compressive material is arranged as the compressive material at the intersection of the two braces as the compressive material, and each of the wires of the two braces is inserted into a cross groove provided at both ends of the compressive material. A cross member is engaged with each other, and a support member receiving a force in a direction perpendicular to the column existing surface is supported at the engagement point.

According to a third aspect of the present invention, there is provided a cross brace, wherein a bar having a length between both ends is inserted between both ends in the longitudinal direction of each brace of the second aspect of the invention, and in this state, the compression member is connected to both ends. The prestress is introduced by being arranged at the intersection of the braces.

A cross brace according to a fourth aspect of the present invention is characterized in that the bar and the compression member according to the third aspect of the present invention are integrally formed.

A brace according to a fifth aspect of the present invention comprises a column and a beam.
Diagonally opposes within the specific column-existing plane of the frame structure consisting of
Between the beam-to-column joints
It has a gradient in the orthogonal direction and its longitudinal middle part
A support portion for receiving a force in a direction perpendicular to the column-beam existing surface.
A brace having a framed structure for supporting a material, comprising a pair of wires joined at both ends to the beam-column joint, one wire being orthogonal to the beam-existing surface at one beam-joint. Is stretched from one end in the direction to the other end of the other beam-joint point in the direction orthogonal to the beam-existing surface, and the other wire is perpendicular to the beam-existing surface of the one beam-joint point. Between the other end in the direction perpendicular to the beam-existing surface of the other beam-joint point, and these two wires are perpendicular to the beam-existing surface at the intermediate portions in the respective longitudinal directions. And a support member that receives a force in a direction perpendicular to the column-beam-existing surface at the intersection.

According to a sixth aspect of the present invention, there is provided a cross brace, wherein two sets of the brace according to the fifth aspect are arranged along two diagonal lines of a quadrangle surrounded by columns and beams having a frame structure, and each of the braces is disposed at an intermediate portion in each longitudinal direction. It is arranged so as to cross in a cross shape, the intersection of both braces and the intersection of a pair of wires of each brace are matched, and a force in a direction perpendicular to the column existing surface is received at the matched intersection. A support member is supported.

[0014]

According to the first aspect of the present invention, since the brace has a gradient, when a force is applied to the brace in a direction perpendicular to the column-beam existing surface, a reaction force for receiving the force is effectively generated by the brace tension. I do. This is because the component force of the generated tension in the direction orthogonal to the column-beam existing surface increases according to the magnitude of the gradient. In addition, a diamond shape is formed by a pair of wires.
, So that each wire is in a symmetrical shape
They face each other in a bent shape. Therefore, the beam
No matter which direction the intersecting force acts,
The wire will fulfill the function of the invention of claim 2, and
Tension generates a reaction force that receives the force from the support member
I do. Also, a compressed material is sandwiched between a pair of wires, and
By expanding the gap, you can easily press
Can be introduced.

[0015]

[0016]

According to the second aspect of the present invention, since two sets of braces cross each other along a diagonal line, for example, wind pressure acting on the curtain wall is distributed to the four beam-column joints via the braces. Can be transmitted in a well-balanced manner. Further, by sandwiching the compressed material between the intersections of the braces, prestress can be introduced into each wire. In particular, since the cross grooves provided at both ends of the compressed material are engaged with the intersections of the wires of the two braces, the positioning of the compressed material is ensured and the position of the intersection is also determined with certainty.

According to the third aspect of the present invention, the reaction force due to the introduction of the prestress is applied as a compressive load in the axial direction of the bar. Therefore, the balanced state of the force is maintained between the wire, the compression member, and the bar constituting the brace, and no reaction force against the introduction of prestress acts on the main frame when no external force is applied.

According to the fourth aspect of the present invention, since the compression member and the bar are integrated, there is no need to adjust the positional relationship.

The invention of claim 5 is effective when the columns are formed in a direction orthogonal to the column beam existing surface, that is, when the width of the columns is large. Here, a description will be given assuming that one end of the column in the direction orthogonal to the column-beam existing surface is the front end, the other end is the rear end, and the column-beam joint is the point on the column side. There is no difference when the force in the column-beam existing surface acts, but when the force in the direction perpendicular to the column-existing surface acts on the column, the end of the wire rod is the front end of one of the opposing columns. And the other pillar is stretched at the rear end, and has a gradient in a direction orthogonal to the pillar existing surface, so that tension is generated in the wire. Accordingly, this tension effectively generates a resistance against a force in a direction orthogonal to the column beam existing surface, thereby preventing the column from buckling in the same direction.

According to the sixth aspect of the present invention, since two sets of braces cross each other along a diagonal line, for example, wind pressure acting on the curtain wall is distributed to the four beam-column joints via the braces. Can be transmitted in a well-balanced manner.

[0022]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a configuration diagram of a frame structure incorporating a cross brace according to a first embodiment of the present invention. In the figure, reference numeral 1 denotes a column, 2 denotes a beam, and these constitute a shaft structure. 10 is a cross brace, two braces 11, 1
2 (hereinafter, the former is referred to as a first brace and the latter is referred to as a second brace) when they are distinguished from each other in a cross, and a rectangular diagonal line surrounded by columns 1 and beams 2 Are arranged along. Reference numeral 16 denotes a pillar-shaped support member for receiving the curtain wall. Both ends of the support member 16 are pin-joined (not rigidly joined) to the upper and lower beams 2, 2 via receiving members (not shown). 17
Is a curtain wall made of transparent glass. The curtain wall 17 is supported by the support member 16 via a mullion (a frame material disposed at a glass joint).

The two sets of braces 11 and 12 constituting the cross brace 10 are two diagonally opposed two points 4A among four column-beam joints 4A, 4B, 4C and 4D in the column existing plane. It is stretched between 4C, 4B, and 4D, and crosses at a middle point in each length direction. First brace 1
1 is composed of a pair of PC steel wires 11a and 11b whose both ends are joined to the beam-to-column joints 4A and 4C. The second brace 12 is composed of a pair of PC steel wires 12a and 12b having both ends joined to the beam-column joints 4B and 4D.

These PC steel wires 11a, 11b, 12a,
12b is a pair of steel wires 11a, 11b, and 12 each formed by a PS-introduced metal piece 20 sandwiched between intersections.
a and 12b are expanded and bent to form a rhombus, thereby introducing prestress. In this case, the reaction force due to the introduction of the prestress is generated at the beam-column joints 4A to 4D.

Thus, each PC steel wire 11a, 11b,
12a and 12b are bent in a V-shape at the position where the PS-introduced metal piece 20 is sandwiched, and are disposed with a slope in a direction perpendicular to the pillar-existing surface with the bending point as a turning point. .

FIG. 2 is a perspective view showing only the cross brace 10 taken out, and FIG. 3 is a PC steel wire 11a, 11b, 12 of each of the braces 11, 12 constituting the cross brace 10.
It is a figure which shows the initial stress state of a and 12b. 1st, 2nd
PC steel wire 11a constituting braces 11, 12 of
11b, 12a, and 12b are bent in a V-shape by sandwiching the PS-introduced metal piece 20 in each longitudinal direction intermediate portion, and in this state, a prestress as shown in FIG. 3 is applied. . In FIG. 3, the tensile stress and the compressive stress are distinguished in the direction of the arrow. PC steel wires 11a, 11b,
12a and 12b generate tensile stress, and the PS-introduced metal 2
0 has a compressive stress.

To construct the cross brace 10, two PC steel wires 11 a and 11 as the first brace 11 are used.
b is stretched in parallel, and connection fittings 15 for connecting to the beam-column joints are attached to the ends. Similarly, on the second brace 12 side, two PC steel wires 12a and 12b are stretched in parallel, and a connection fitting 15 for connecting to the beam-column joint is attached to each end. And each brace 11, 1
2 PC steel wires 11a, 11b, 12a, 12b are straightened, and the PC steel wires 12a, 12
b, the PC steel wires 11a, 11 of the first brace 11
Insert between the pair of b and cross each other, and join both ends to the beam-to-column joints 4A to 4D with the connection fittings 15, respectively. In this case, the distance between the column-beam joints 4A and 4C and the length of the PC steel wires 11a and 11b of the first brace 11 in the natural state are set to be substantially equal. Also, beam-to-column joints 4A, 4C
The distance between them and the length of the PC steel wires 11a and 11b of the first brace 11 in the natural state are set to be substantially equal. Each P
After connecting both ends of the C steel wires 11a, 11b, 12a, and 12b to the beam-to-column joints 4A to 4D, respectively, the PC introduction hardware 20 is cut into the intersection of both the braces 11, 12 to thereby reduce the distance between the intersections. The interval is widened to form a diamond.

In this case, the PS-introduced hardware 20 is shown in FIG.
The one shown in (a) is used. This PS introduction hardware 20
Has a tool engaging portion 22 for engaging a wrench or the like on a main body 21 located at the center in the longitudinal direction, and has male screw portions 23a and 23b having oppositely opposite threads at both ends thereof. An end face plate 24a disposed at the base end of the cylindrical end fitting 24 is screwed to the male screw portions 23a and 23b. The end of each end fitting 24 has an intersection of a PC steel wire (PC steel wire 11a). , 12a and the intersection of the PC steel wires 11b, 12b). Therefore, the grooves 25 of the metal fittings 24 at both ends are connected to the PC steel wires 11a, 12a, 11b, 1
When the tool engagement portion 22 is turned in a state where the end metal piece 24 is prevented from rotating, the male screw portions 23a, 2a
By the feed action of 3b, the end metal piece 24 moves in the axial direction, and the entire length of the PS-introduced metal piece 20 changes. Further, a flange 26 connected to the stud-shaped support member 16 is fixed to the tip of the end hardware 24 arranged on the curtain wall 17 side. This flange 2
6 has a plurality of bolt through holes 26a and a notch 26b at a portion corresponding to the cross groove 25, with the intersection of the PC steel wires 11a and 12a engaged with the groove 25. , Can be connected to the support member 16 by bolts.

First brace 11 and second brace 12
5, the cross section of each of the PC steel wires 11 a, 12 a, 11 b, and 12 b is interposed in the groove 25 of the end metal piece 24 at both ends, as shown in FIG. 5B. I'm stuck. Then, an appropriate prestress is introduced by adjusting the entire length of the PS introducing hardware 20. In this state, each PC steel wire 11a, 11b,
Since the intersection of 12a and 12b is fitted in the cross groove 25 of the PS introducing hardware 20, the PC steel wires 11a and 11b
Positioning of b, 12a, 12b itself is performed, and the position is stable. And the cross brace 1 having such a structure
0 is incorporated in the frame structure, and one end of the PS introducing hardware 20 is connected to the curtain wall support member 16 by bolting the flange 26.

The connection between the support member 16 and the PS-introduced hardware 20 can be performed without using the flange 26. In the example shown in FIG. 6, a plurality of (for example, two or four) screw rods 27 are fixed by welding to the outer periphery of the end fitting 24 avoiding the cross groove 25 as shown in FIG. As shown in FIG. 5B, the tip of the rod 27 is passed through a hole provided in the support member 16 and fastened with a nut, so that the end fitting 24 is closed.
Are connected to the support member 16. Of course, the connection may be made by other means.

Next, the operation will be described with reference to FIG.
Note that, in this figure, portions not involved in generating a reaction force are indicated by dotted lines. FIG. 7A shows the state of generation of stress when the positive wind pressure FA acts on the curtain wall 17. When a positive wind pressure FA acts on the curtain wall 17, the force is applied to the brace 11,
It is transmitted to the 12 PS-introduced hardware 20 and transmitted from the PS-introduced hardware 20 to the inner PC steel wires 11a and 12a. And P
A compressive stress P is generated in the S-introduced hardware 20, and a tension T is generated in the inner PC steel wires 11a and 12a. The tension T effectively generates a reaction force against the wind pressure due to the gradient of the PC steel wires 11a and 12a.
In this case, around the point of engagement with the PS introduction hardware 20,
Since the gradient of the PC steel wires 11a and 12a is reversed, the resultant force of the tension T generated on both sides thereof becomes a reaction force.
Further, a tensile load due to the tension T acts on the column 1 as the main frame, and the wind pressure is effectively transmitted to the column 1. Since the outer PC steel wires 11b and 12b are on the slack side, no tension is generated. However, since the PC steel wires 11b and 12b are pre-stressed in advance, the loosening is prevented.

FIG. 7B shows the state of generation of stress when the negative wind pressure FB acts on the curtain wall 17. When the negative wind pressure FB acts on the curtain wall 17,
The force is transmitted to the PC steel wires 11 b and 12 b outside the braces 11 and 12 via the support member 16, and the PC steel wires 11
A tension T is generated at b and 12b. This tension T is equal to PC
Since the steel wires 11b and 12b have a gradient, a reaction force against the wind pressure is effectively generated as described above.
Further, a tensile load due to the tension T acts on the column 1 as the main frame, and the wind pressure is effectively transmitted to the column 1. In this case, on the contrary, the inner PC steel wire 11a,
Since 12a is on the slack side, no tension is generated.

Therefore, no matter which direction the wind pressure acts on the curtain wall 17, one of the PC steel wires 11
Tensile stress is generated at a, 11b, 12a, and 12b, and a reaction force for receiving the force from the support member 16 is generated by the tension. Also, since the two sets of braces 11 and 12 cross each other along a diagonal line, the curtain wall 17
Can be distributed to the four beam-to-column joints 4 </ b> A to 4 </ b> D via the braces 11 and 12 in a well-balanced manner.

As a result, in addition to the original function that the cross brace 10 generates a resistance force against the horizontal force in the column-beam existing plane, the cross brace 10 also serves as a stud and a wind-resistant beam.
It is possible to omit the studs and the windproof beams, and to reduce the cross sections of the constituent members. For this reason, the ratio of the studs and the windproof beams occupying in the pillar existing surface can be reduced, and a frame having a transparent image can be created. In this case, the PC steel wire 11
Since a, 11b, 12a, and 12b are used as the braces 11, 12, a frame with a more transparent image can be formed from that point. Also, the PS metal fitting 20 is connected to the PC steel wire 1
PC steel wires 11a, 11b, 12a, 12b are formed by interrupting the intersections of 1a, 11b, 12a, 12b.
Since the prestress is introduced into the device, there is an advantage that the prestress can be easily introduced without using a special device.

As can be seen from FIGS. 7A and 7B, the PC steel wire 11 which generates a reaction force depending on the direction of wind pressure.
a, 11b, 12a, and 12b are different, so if it is sufficient to configure so as to oppose only the wind pressure in either direction, omit the non-functional (shown by dotted line) PC steel wire. Can also. Further, the first brace 11 and the second brace 12 are assembled in a cross to form the cross brace 10, but the cross brace 10 may be omitted. That is, the first brace 11 and the second brace 1
Either of the two braces can be omitted.

In the above example, the curtain wall 1
Although the support member 16 of FIG. 7 is a stud-shaped member, the support member 18 may be a wind-resistant beam-shaped support member 18 as shown in FIG. Also in this case, both ends of the wind-resistant supporting member 18 are pin-joined (not rigidly joined) to the left and right pillars 1 and 1 via receiving members (not shown), and the curtain wall 17 is supported via the mullion. 18 supported.

Next, a second embodiment of the present invention will be described. In the first embodiment, after connecting each end of the cross brace 10 to the beam-to-column joints 4A to 4D, the PC steel wires 11a, 11
Prestress was introduced to b, 12a, and 12b, and a reaction force of prestress was generated in the main frame. In the cross brace 30 of the second embodiment, as shown in FIG.
The rods 42 and 43 which receive the reaction force are inserted in 2. Here, a compression member 40 is used in which the rods 42 and 43 and the PS introduction part (corresponding to the PS introduction metal part of the first embodiment) 41 are integrated. Other points are the same as in the first embodiment.

The compression member 40 includes a PS introducing portion 41, a first rod 42, and a second rod 42 along three axes orthogonal to each other.
And a bar material 43. As shown in FIG.
These intersections are formed as an integral body 44 by casting or the like. Then, the PS introducing hardware 2 of the first embodiment is attached to the tips of the six feet 44 a protruding from the main body 44.
The main body 21 is attached to the front end of the main body 21 and the rod end 45 or the end fitting 24 of the PS-introduced metal fitting 20 of the first embodiment is screwed. This allows P
Each length of the S introduction part 41, the first bar 42, and the second bar 43 can be freely adjusted.

The compression member 40 having such a structure is incorporated into the first brace 11 and the second brace 12, and
As shown in FIG. 9, the tips of the bars 42 and 43 are connected to the connecting hardware 15 at the ends of the PC steel wires 11a, 11b, 12a and 12b.
And stretch the PC steel wires 11a, 11b, 12a, 12b. Then, in a state where the lengths of the rods 42 and 43 are adjusted to the distances between the beam-column joints 4A to 4D to be bridged, the PC steel wires 11a, 11b, 12a, 12
b, increasing the distance between the intersections, the PC steel wires 11a, 11b,
Prestress is introduced into 12a and 12b. Then, as shown in FIG. 11, the bars 42 and 43 receive the reaction force due to the introduction of the prestress, so that the stress is balanced inside the cross brace 30 and the beam-to-column joint 4
Even if it is stretched between A and 4D, the reaction force due to the introduction of the prestress into the main frame does not occur. Therefore, the cross brace 30 can be incorporated into the main frame in a state where the prestress has been introduced in advance, and the on-site work can be further reduced.

By adopting the cross braces 10 and 30 of the first and second embodiments, a frame having a transparent image can be made. Thereby, the whole image can be made more transparent. FIG.
Shows an example of a pillar that realized a transparent image. The pillar 104 shown in (a) is a lattice 1 on two parallel pipes 105.
06 is joined to increase the space. Also,
The pillar 107 shown in (b) is obtained by forming a large number of round holes 109 in the I-shaped steel web 108 to increase the space. Such a pillar has a large width (the structure of the pillar).

Next, a third embodiment of the present invention suitable for application to such a pillar will be described. FIG.
3 shows a third embodiment. Pillars that are mature, like assembled pillars 1
In the case of 01, the intersection of the cross braces 110 is brought to the center of the frame (a square frame composed of columns and beams). In this figure, the beams are omitted. High column 10
No. 1 has low buckling strength. Therefore, the PC steel wires 11 constituting the first brace 111 and the second brace 112, respectively.
1a, 111b, 112a, and 112b are shifted and joined at the beam-column joint side so that the intersections are located at the centers.

That is, for the first brace 111, the upper end of one PC steel wire 111a of the pair of PC steel wires 111a and 111b is connected to the rear end of the beam-column joint 4A (perpendicular to the beam-existing surface). Direction, and the lower end is the front end of the beam-to-column joint 4C (the other end in the direction perpendicular to the beam-existing surface).
And a PC steel wire 111a is stretched. Also, the upper end of the other PC steel wire 111b is connected to the front end of the beam-to-column joint 4A, and the lower end is connected to the rear end of the beam-to-column joint 4C.
The steel wire 111b is stretched. And both PC steel wires 111
a, 111b intersect in a plane perpendicular to the column-beam-existing surface at each longitudinal intermediate portion. In addition, the second brace 11
2, the upper end of one of the pair of PC steel wires 112a and 112b is connected to the beam-column joint 4B.
And the lower end is connected to the front end of the beam-to-column joint 4D, and the PC steel wire 112a is stretched. Also, the upper end of the other PC steel wire 112b is connected to the front end of the beam-column joint 4B,
The lower end is connected to the rear end of the beam-column joint 4D, and the PC steel wire 11
2b is installed. And both PC steel wires 112a, 112
b intersect with each other at a middle portion in the longitudinal direction in a plane orthogonal to the column-beam existing plane. The intersection of the two braces 111 and 112 coincides with each other, and the intersection
The curtain wall supporting member 116 is connected through the fifth member 5.

Next, the operation will be described. For wind pressure,
A reaction force is generated by the same principle as in the first embodiment. At the same time, the wind pressure is effectively transmitted to the main frame via the cross brace 110. In addition, the cross brace 110 functions to prevent the column from buckling. This will be described below.

FIG. 14 is a diagram for explaining the operation of the brace of the third embodiment, and FIG. 15 is a diagram for explaining the operation of a conventional brace (a brace having no gradient in a direction perpendicular to the column-beam-existing surface) shown for comparison. is there. As shown in (a), when the horizontal force FC in the column-beam existing plane acts on the column 110 having a shape, in the brace 110 of the embodiment, the tension T is generated in the PC steel wire 111a and the buckling occurs. To prevent. The same applies to the conventional brace 3. However, as shown in (b),
When a horizontal force FD in a direction orthogonal to the column beam existing surface acts on the column 101, no tension is generated in the brace 3 with the conventional brace, but the PC steel wire 111a has a gradient in the brace 110 of the embodiment. As a result, a tension T is generated in the PC steel wire 111a. Therefore, the tension T effectively generates a resistance to a force in a direction orthogonal to the column beam existing surface, thereby preventing the column 101 from buckling in the same direction. Since the cross brace 110 exerts this buckling preventing action at the four beam-to-column joints, the constituent members of the column 101 can be made smaller. Since the cross brace 110 of the third embodiment plays three roles of an earthquake-resistant member, a wind-resistant member, and a buckling prevention member, the use efficiency as a strength member is good, and the cost is reduced and the design is enhanced.

When the floor height or span is large, the inside of the frame composed of columns and beams is divided into a plurality of small sections by windproof beams and studs, and the above-described embodiment is placed in the small sections. Similar effects can be obtained by providing the cross braces as described in the above.

[0046]

As described above, according to the first aspect of the present invention, since the reaction force in the direction orthogonal to the column-existing surface is effectively generated in the brace, the force in the direction orthogonal to the column-existing surface is generated. Acts on the support member, the force is transmitted through the brace,
Effectively transmitted to pillars and beams that are the main frame. Therefore,
The brace, in addition to its original function of generating a resisting force against the horizontal force in the column-beam existing plane, also serves as a stud and a windproof beam, as a result, omission of the stud and the windproof beam, The cross section of those constituent members can be reduced. Therefore, it is possible to reduce the ratio of the studs and the windproof beams occupying in the pillar existing surface, and to realize a frame having a transparent image. In addition, the support member is
Whichever direction the force acts on,
Can occur. Therefore, the support member
When the curtain wall is supported, a positive wind
Whether pressure is applied or negative wind pressure is applied,
The wind pressure can be reliably transmitted to the main frame. Yo
Part or all of the role of studs and wind beams
In the same way as the effect of claim 2,
The frame of the image can be realized. Also, the compressed material
Prestress can be introduced into wires simply by sandwiching them between wires
Therefore, no special prestressing device is required, and
Work can be done easily.

[0047]

[0048]

According to the second aspect of the present invention, the two sets of braces cross each other in a cross, so that each brace has a first mode.
The same effect as that of the invention can be obtained, and as a result, a reaction force against the wind pressure and the like can be generated in a well-balanced manner as a whole, and the wind pressure and the like can be transmitted to the main frame.
In addition, by simply sandwiching the compressed material between the intersections of the wires, it is possible to easily introduce a prestress into the wire and obtain an effect that the wire can be stably held.

According to the third aspect of the present invention, the reaction force due to the introduction of the prestress to the wire constituting the brace does not act on the main frame, and the brace itself is in a self-balancing state. Therefore, it is easy to assemble in a state where pre-stress has been introduced in advance, and then to assemble the main frame.

According to the fourth aspect of the present invention, since the compression member and the bar are integrated, there is no need to adjust the positional relationship and the handling is simple.

According to the fifth aspect of the present invention , the brace mainly serves to prevent buckling of the column in the direction orthogonal to the column beam existing surface. Therefore, the brace performs three functions of the same function as the conventional one, the newly added wind resistance function, and the buckling prevention function, which is advantageous not only in design but also in cost.

According to the sixth aspect of the present invention, the two sets of braces cross each other in a cross shape, so that each brace has a seventh aspect.
As a result, a reaction force against a wind pressure or the like can be generated in a well-balanced manner as a whole, and the wind pressure or the like can be transmitted to the main frame. Also,
Also performs buckling prevention function.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing an example of a frame structure having a cross brace according to an embodiment of the present invention, where (a) is a plan view and (b) is a side view as viewed from the outside.

FIG. 2 is a perspective view showing a schematic configuration of a cross brace of the embodiment.

FIG. 3 is a plan view showing an initial stress state in each of the braces constituting the cross brace of the embodiment.

FIG. 4A is a perspective view showing a state before inserting a PS-introduced hardware of the cross brace of the embodiment, and FIG. 4B is a schematic perspective view showing a state after inserting the PS-introduced hardware.

FIGS. 5A and 5B are diagrams showing an example of a PS-incorporated hardware, in which FIG. 5A is a perspective view showing a relationship between a PC steel wire and a PS-incorporated metal constituting the cross brace of the embodiment, and FIG. It is a side view which shows the engagement relationship of PS and the metal fittings.

FIG. 6 is a view showing another example of a PS-introduced hardware, and FIG.
2 is a perspective view showing a relationship between a PC steel wire and a PS-introduced hardware constituting the cross brace of the embodiment, and FIG.
It is a side view which shows the engagement relationship of an introduction hardware.

FIG. 7 is a plan view used to explain the operation when the glass curtain wall supported by the cross brace of the embodiment receives a wind pressure, and FIG. 7A is an operation explanatory diagram when the glass curtain wall receives a positive wind pressure; (B) is an operation explanatory diagram when a negative wind pressure is received.

8A and 8B are configuration diagrams showing another example of the frame structure having the cross braces according to the embodiment, wherein FIG. 8A is a plan view and FIG. 8B is a side view as viewed from the outside.

9A and 9B are configuration diagrams of a cross brace according to another embodiment of the present invention, wherein FIG. 9A is a perspective view and FIG. 9B is a view of IXb-I in FIG.
It is a Xb arrow view.

FIG. 10 is a plan view of a PS-introduced metal used for the cross brace of the embodiment.

FIG. 11 is a diagram showing an initial stress state in each of the braces constituting the cross brace of the embodiment.

FIG. 12 is a side view showing each example of a pillar having a frame structure to which the brace or the cross brace of the present invention is applied.

13A and 13B are configuration diagrams of a frame structure provided with a cross brace according to still another embodiment of the present invention, wherein FIG. 13A is a plan view and FIG. 13B is a side view.

FIGS. 14A and 14B are explanatory diagrams of the operation of each brace constituting the cross brace of the embodiment, wherein FIG. 14A is an explanatory diagram of the effect on a force in a direction along the surface of the brace, and FIG. FIG. 7 is an explanatory diagram of an action with respect to a directional force.

FIGS. 15A and 15B are explanatory diagrams of an operation by a conventional brace shown as a comparative example with FIG. 14; FIG. 15A is an explanatory diagram of an operation with respect to a force in a direction along the surface of the brace; FIG. 7 is an explanatory diagram of an action with respect to a directional force.

16A and 16B are configuration diagrams showing an example of a frame structure having a conventional cross brace, where FIG. 16A is a plan view and FIG. 16B is a side view.

FIGS. 17A and 17B are configuration diagrams showing another example of the frame structure having a conventional cross brace, where FIG. 17A is a plan view and FIG. 17B is a side view.

[Explanation of symbols]

1,101 pillar 2 beam 4A, 4B, 4C, 4D pillar beam joint 10,30,110 cross brace 11,12,111,112 brace 11a, 11b, 12a, 12b PC steel wire (wire) 16,116 support member 20 PS-introduced hardware (compressed material) 41 PS-introduced part (compressed material) 42, 43 Bar 111a, 111b, 112a, 112b PC steel wire (wire)

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) E04B 2/56 E04B 1/18

Claims (6)

(57) [Claims] 1. A strut extending between obliquely opposed beam-column joints in a specific beam-existing plane of a framed structure composed of columns and beams, and having a gradient in a direction perpendicular to the beam-existing plane. And a brace having a frame structure for supporting a supporting member which receives a force in a direction perpendicular to the column-beam-existing surface at an intermediate portion in a longitudinal direction thereof.
A is substantially parallel to a pair of wire whose both ends are joined to the beam-column junction
And a pair of the wires at a longitudinally intermediate portion of these wires.
A bar-shaped compressed material that widens the space between the members
It is sandwiched in the direction perpendicular to the existing surface and engages with each wire.
This makes the pair of engagement points a turning point,
Wires form rhombus under prestressed condition
So that, at one end of the compression member, the column beam
Supports a support member that receives force in the direction perpendicular to the plane of existence
A brace with a frame structure characterized by the following. 2. A square 2 surrounded by columns and beams of a frame structure.
Two pairs of braces according to claim 1 along the diagonal of the book, each
At the middle part in the longitudinal direction, they are arranged so as to cross each other in a cross shape.
At the intersection of the brace, both brace as compression material
A cross-shaped groove provided at both ends of the compressed material
At the intersection of the wires of both braces.
At the point of engagement, a force is applied in the direction perpendicular to the beam-existing surface.
A cruciform brace with a frame structure, which supports a support member
race. 3. The device according to claim 1, wherein said brace is provided between both ends in the longitudinal direction.
A bar having a length between both ends is inserted, and the compressed material is
Is located at the intersection of both braces
3. The method according to claim 2, wherein stress is introduced.
Cross brace with frame structure. 4. The bar and the compression member are integrally formed.
4. The cross of the frame structure according to claim 3, wherein
Braces. 5. A specific column-beam structure of a framed structure composed of columns and beams.
It is stretched between diagonally opposed beam-column joints in the existing plane,
It has a gradient in the direction perpendicular to the pillar existing surface, and
One that is perpendicular to the column existing surface at its longitudinal middle part
Brace with a frame structure to support the support member receiving the force in the opposite direction
And a pair of wire rods joined at both ends to the beam-column joint.
And one of the wires is the beam-existing surface of one of the beam-joint points.
The beam from one end in the direction orthogonal to
Stretched to the other end in the direction perpendicular to the existing plane,
Is perpendicular to the beam-existing surface of the one beam-joint point.
From the other end of the beam to the beam-existing surface of the other beam-joint point.
Stretched to one end in the orthogonal direction,
Is in the plane perpendicular to the column-existing plane at the middle of each length direction.
And intersect at right angles with the beam-existing surface at the intersection.
A supporting member that receives a force in a direction of
Braced frame structure. 6. A square 2 surrounded by columns and beams having a frame structure.
Two sets of braces according to claim 5 along the diagonal of the book,
At the middle part in the longitudinal direction, they are arranged so as to cross each other in a cross shape.
Intersection of braces and intersection of a pair of wires for each brace
And, at the intersection where the coincidence is made, the beam-existing surface
That the supporting member that receives the force in the direction perpendicular to
Cross brace with frame structure.