JP3311458B2 - Pillar connection structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pillar connection structure, and more particularly to a pillar connection structure applicable to a down conductor in a lightning rod facility of a building.

[0002]

2. Description of the Related Art Conventionally, in lightning rod facilities such as reinforced concrete buildings and steel-frame reinforced concrete buildings, JIS A 4201 "Lightning rod facilities for buildings and the like" has been used.
In accordance with the provisions of the above, the main steel frame or two or more main reinforcing bars are replaced with the down conductor of the lightning rod.

[0003] On the other hand, as one of joint structures of reinforcing bars arranged in a pillar, such as PCa (precast concrete, hereinafter referred to as "PCa"), there is a structure using a splice sleeve. In this structure, the end of each reinforcing bar to be connected is inserted from both ends of the through hole of the splice sleeve, and a gap formed between the through hole and each of the reinforcing bars is filled with a filler such as mortar. Then, by appropriately curing and fixing this, both rebars are integrated in a series.

[0004] However, in the joint structure of reinforcing bars using the splice sleeve, the reinforcing bars to be connected do not directly contact each other, and are connected via the filler without directly contacting the splice sleeve. Therefore, at the joint using this splice sleeve,
Both rebars are connected in an electrically insulated state. Therefore, the PC using the splice sleeve
In the joint structure of column a, the rebar cannot be replaced with a down conductor, and it is necessary to provide an individual down conductor.

Specifically, for example, in the case of a method of assembling a PCa column, a sheath tube for a down conductor in a lightning rod facility is driven into a PCa column member, and the conductors are connected one by one when the PCa column is built. There is a way. In addition, a method of laying a lead wire housed in a protective tube for protecting the PCa column on the outer surface of the PCa column, or a method of inserting a lead wire into a pipe space has been performed.

[0006]

However, in the above-mentioned method of arranging the down conductor, not only a separate down conductor from the protruding part of the lightning rod to the ground electrode is required, but also the down conductor is provided outside the pillar. Requires a protective tube to protect it. In addition, the method of constructing these down conductors requires skill and may require a specialized lightning rod specialist. For this reason, in the construction of the lightning rod facilities, there is a problem that the work of attaching the down conductor only requires cost and time, and is extremely disadvantageous economically.

SUMMARY OF THE INVENTION An object of the present invention is to solve such a conventional problem. The present invention is simple in construction, can achieve low cost, and is used in a lightning rod facility of a building. It is an object of the present invention to provide a pillar connection structure applicable to a down conductor.

[0008]

Means for Solving the Problems To achieve this object, the invention according to claim 1 relates to a column connecting structure for vertically connecting a column in which a reinforcing bar is disposed,
A first conductive member that is electrically connected to the reinforcing bars disposed in the lower floor pillars and is at least partially exposed to the surface of the floor on which the upper floor pillars are disposed; The column having a structure electrically connected to the provided reinforcing bar and at least a part of which is electrically connected to the second conductive member exposed at the lower end surface of the column on the upper floor. A connection structure is provided.

The invention according to claim 2 relates to a pillar connection structure for vertically connecting pillars, wherein at least a part of the pillar connection structure is exposed on the surface of the floor on which the pillars of the upper floor are arranged. One conductive member, a second conductive member at least partially exposed at the lower end surface of the pillar on the upper floor, and a conductive member connecting the first conductive member and the second conductive member. And a first conductive member of the pillar of the upper floor is electrically connected to the second conductive member of the pillar of the lower floor. It is intended to provide a connection structure of a pillar characterized by the above.

According to a third aspect of the present invention, there is provided a connection structure for columns, wherein at least one of the first conductive member and the second conductive member comprises a level adjusting device. It is. Further, the invention according to claim 4 is that at least one of the first conductive member and the second conductive member, at least a part of a portion in contact with the other, is made of a low melting point metal, A connection structure for columns, wherein a heating device for heating the low melting point metal is inserted into at least one of the first conductive member and the second conductive member.

[0011]

According to the pillar connection structure of the first aspect, the first conductive member is electrically connected to the reinforcing bar provided in the pillar on the lower floor, and the second conductive member is connected to the reinforcing bar on the upper floor. It is electrically connected to the reinforcing bars provided on the pillar. Since the first conductive member and the second conductive member have a structure electrically connected to each other, the respective columns arranged above and below are electrically connected to each other. Therefore, connecting the first conductive member or reinforcing bar provided on the pillar on the top floor to the lightning rod, and grounding the reinforcing bar or second conductive member provided on the pillar on the bottom floor. In the lightning rod, the first conductive member or the reinforcing bar disposed in the pillar of the upper floor via a second conductive member from the reinforcing bar,
The first conductive member of the pillar disposed on the lower floor, the reinforcing bar and the second conductive member, and further, the first conductive member, the reinforcing bar and the second conductive member disposed in the pillar of the lower floor Grounded through the conductive member to the ground. Therefore, the rebar is used as a down conductor in lightning rod equipment.

[0012] Further, the electrical connection between the first conductive member and the second conductive member, the continuity between the first conductive member and the reinforcing bar, and the continuity between the second conductive member and the reinforcing bar. Just by aiming, the lightning rod equipment will be installed, so construction can be done easily. Further, when the pillar is a PCa pillar, for example,
Since the first conductive member and the second conductive member can be installed in the PCa pillar in advance at the factory, the electrical connection between the first conductive member and the second conductive member is made at the site. It is good to be able to just connect. Therefore, construction of the lightning rod facility is further easily performed.

Further, the contact area between the first conductive member and the second conductive member, the contact area between the first conductive member and a reinforcing bar provided on a pillar on an upper floor, and Since the contact area between the second conductive member and the reinforcing bar provided on the pillar on the lower floor can be made large, conduction performance between the members is improved. According to the pillar connection structure of the second aspect, the first conductive member and the second conductive member are connected by a conductor and are electrically connected. Then, columns having this structure are disposed vertically, and the first conductive member of the columns disposed on the lower floor and the second conductive member of the columns disposed on the upper floor are electrically connected. Because of the connected structure, the columns arranged vertically are electrically connected to each other. Therefore, the conductor or the first conductive member disposed on the pillar on the top floor is connected to the lightning rod, and the conductor or the second conductive member disposed on the pillar on the bottom floor is grounded. The lightning rod is a first conductive member of a pillar disposed on the lower floor via a second conductive member from a first conductive member or a conductor disposed in the pillar on the upper floor. , The conductor and the second conductive member, and further, the ground from the first conductive member disposed in the pillar of the lower floor through the conductor, or the second conductive member, to the ground. .

Here, the contact area between the second conductive member of the pillar provided on the upper floor and the first conductive member of the pillar provided on the lower floor, The contact area with the conductor, and the contact area between the second conductive member and the conductor,
Since it can be widened, the conduction performance between the members is improved. Further, the conductor only needs to have a length of substantially one floor, and the pillar is, for example, PC
In the case of the column a, when the PCa column is formed, the first conductive member, the conductor, and the second conductive member can be installed on the PCa column in advance at a factory. Only the electrical connection between the first conductive member and the second conductive member needs to be performed. Therefore, construction of the lightning rod facility is further easily performed.

Further, in the pillar connection structure according to the second aspect, the lightning rod is connected to the first conductive member provided on the upper floor, regardless of the presence or absence of the reinforcing bar provided in the pillar. Through the conductor and the second conductive member connected to the conductor, the first conductive member of the pillar further disposed on the lower floor, the conductor connected thereto and the connection to the conductor The ground is passed through the second conductive member.

According to a third aspect of the present invention, at least one of the first conductive member and the second conductive member comprises a level adjusting device.
In addition to the above operation, the level adjustment of the pillar and the electrical connection between the first conductive member and the second conductive member, which are performed when the pillar is built, can be performed at the same time. In addition, when the pillars on the upper floor are constructed, the center of gravity of the pillars on the upper floor can be taken by the level adjustment device, so that the level precision and the vertical precision are adjusted separately.

That is, for example, as the pillar, PC
When the column a is used, when adjusting the vertical accuracy of the PCa column, a liner plate or a wedge is sandwiched around the PCa column. At this time, the center of gravity of the column on the upper floor is adjusted by the level adjusting device. Without adjusting the liner plate etc. by trial and error.
The correct construction of the pillar a can be performed. Accordingly, the construction of the lightning rod facilities is simplified, and the construction of the pillars is also simplified.

Further, according to the pillar connection structure, the low melting point metal is melted by the heating device, and the first conductive member and the second conductive member are integrated. Therefore, in addition to the above operation, the reliability of the electrical connection between the first conductive member and the second conductive member is further improved.

[0019]

Next, an embodiment according to the present invention will be described with reference to the drawings. (Embodiment 1) FIG. 1 is a longitudinal (vertical) cross-sectional view showing a column connection structure according to Embodiment 1 of the present invention. In the first embodiment, a case where a PCa column is used as the column will be described.

As shown in FIG. 1, a PCa column 10 on the lower floor
Inside, a plurality of column main bars 11 corresponding to the reinforcing bar of the present invention are arranged. A first conductive member 12 is welded to an upper part of the column main bar 11, and the column main bar 11 and the first conductive member 12 are electrically connected. The first conductive member 12 is welded to the metal plate 13 and the metal plate 13 welded to the column main bar 11, and extends to the surface of the floor 90 provided above the PCa column 10 at the time of erecting. It comprises a metal bar 14 and a metal plate 15 welded to the upper end of the metal bar 14 and protruding from the surface of the floor 90.

On the other hand, a plurality of column main bars 51 corresponding to the reinforcing bar of the present invention are arranged in the PCa column 50 on the upper floor. A first conductive member 52 is welded to a lower portion of the column main bar 51, and the column main bar 51 and the first conductive member 52 are electrically connected. The second conductive member 52 has a metal plate 53 welded to the column main bar 51, a metal bar 54 welded to the metal plate 53 and extending to the lower end surface of the PCa column 50, and a lower end of the metal bar 54. And a metal plate 55 that is welded and protrudes from the lower end surface of the PCa column 50.

The lower pillar PCa column 10 and the PCa column 10
The connection structure with the PCa pillar 50 on the upper floor constructed on the floor 90 arranged on the upper side is the metal plate 1 of the first conductive member 12.
5 and the metal plate 55 of the second conductive member 52 are in contact with each other,
The upper end of the column main bar 11 and the lower end of each of the column main bars 51 are
The splice sleeve 30 is inserted from both ends of the through-hole 31, the mortar is filled in the through-hole 31, and concrete is cast at a necessary place.

With this connection structure, the column main bar 11 and the column main bar 51 are electrically connected via the first conductive member 12 and the second conductive member 52 even if they are not in direct contact in the splice sleeve 30. Connected to. For this reason, pillar main bar 1
1 and 51 can be used as down conductors of the lightning rod facility. Further, the contact area between the column main bar 11 and the first conductive member 12, the column main bar 51 and the second conductive member 5
2 and the contact area between the first conductive member 12 and the second conductive member 52 can be sufficiently secured, so that the conductivity between the members can be improved.

As described above, the PCa column on each floor is composed of a column main bar,
The first conductive member and the second conductive member are electrically connected to PCa pillars arranged above and below. Further, a conductive member 91A having the same structure as the first conductive member 12 is provided on the PCa column 91 provided on the lowest floor,
This conductive member 91A is grounded in the ground. On the other hand, a conductive member 92A having the same structure as the second conductive member 52 is provided on the PCa pillar 92 provided on the top floor, and a lightning rod 93 is connected to the conductive member 92A. ing.

Therefore, the lightning rod 93 can be installed underground via the column main bar, the first conductive member and the second conductive member provided on the PCa column on each floor without providing a special down conductor. Can be grounded. In the first embodiment,
The members constituting the first conductive member 12 were welded to each other to establish an electrical connection. However, the present invention is not limited to this, and the first conductive member 12 may be integrally formed in advance, Also,
If electrical connection is possible, each member may be connected using members such as bolts and nuts.

The first conductive member 12 is electrically connected to the main column 11 and grounded in the ground, and at least a part of the first conductive member 12 is exposed to the surface of the floor 90. Of course, other structures may be provided as long as conduction is achieved. In the first embodiment, the members constituting the second conductive member 52 are welded to establish electrical connection with each other. However, the present invention is not limited to this, and the second conductive member 5 may be used.
2 may be integrally formed in advance, or if electrical connection is possible, members such as bolts and nuts may be used to connect the respective members.

The second conductive member 52 is electrically connected to the main column 51 and connected to the lightning rod 93. At least a part of the second conductive member 52 is exposed to the lower end surface of the PCa column 50. Of course, other structures may be provided as long as the electrical connection is established. In the first embodiment, the first conductive member 12 is electrically connected to the column main bar 11, and the second conductive member 52 is electrically connected to the column main bar 51. However, the present invention is not limited to this. The 12 and the second conductive member may be electrically connected to other reinforcing bars in the PCa.

Furthermore, in the first embodiment, the case where the conductive member 91A of the PCa pillar disposed on the lowest floor is grounded in the ground has been described. However, the present invention is not limited to this, and the PCa disposed on the lowest floor is not limited thereto. The lower end of the pillar main reinforcement of the pillar may be grounded in the ground. In the first embodiment, the case where the conductive member 92A of the PCa column disposed on the top floor is connected to the lightning rod 93 is described. However, the present invention is not limited to this, and the upper end of the column main bar of the PCa column disposed on the top floor is described. A lightning rod 93 may be connected to the section. (Embodiment 2) Next, Embodiment 2 according to the present invention will be described.
This will be described with reference to the drawings.

FIG. 2 is a longitudinal (vertical) cross-sectional view showing a column connection structure according to a second embodiment of the present invention. In the second embodiment, the same members as those in the first embodiment are used.
The same reference numerals are given and the description thereof is omitted, and parts not directly related to the present invention are omitted in the drawings. FIG.
As shown in FIG. 5, a first conductive member 22 having another structure is disposed on the lower floor PCa column 10 in place of the first conductive member 12 described in the first embodiment. Pillar 5
At 0, a second conductive member 62 having another structure is provided in place of the second conductive member 51.

The first conductive member 22 is welded to the column main bar 11, and is electrically connected to the metal plate 13.
And a metal rod 1 fixed to a metal plate 13 by bolts 81
4, a metal plate 23 fixed to the upper part of the metal rod 14 with bolts 82, and a PCa column 1 welded on the metal plate 23.
A metal nut 24 having a bolt hole with an open upper part formed at a position corresponding to the center of the nut 0, and is fitted to the bolt hole of the nut 24 and disposed on the upper part of the PCa column 10 at the time of erecting. Can be extended to the surface of the floor 90 to be
Metal level adjusting bolt 25 for adjusting the level of 0
And is composed of The level adjusting bolt 25 corresponds to the level adjusting device of the present invention.

On the other hand, the second conductive member 62 is
1, a metal plate 53 electrically connected to the main column 51, a metal bar 54 fixed to the metal plate 53 by bolts 83, and a metal plate 26 for fixing the lower end of the metal bar 54 by bolts 84. And welded to the lower surface of the metal plate 26,
and a metal plate 55 whose surface is exposed from the lower end surface of the a pillar 50.

The PCa pillar 10 on the lower floor and the PCa pillar 10
The connection structure between the PCa pillar 50 on the upper floor constructed on the floor 90 provided above is formed by the head of the level adjusting bolt of the first conductive member 22 and the metal of the second conductive member 62. The plate 55 is abutted, and the upper end of the column main bar 11 and the lower end of each of the column main bars 51 are inserted from both ends of the through hole 31 of the splice sleeve 30, and the mortar is filled in the through hole 31. It has a configuration where concrete is cast in necessary places.

The PCa column having this connection structure is a PCa column.
By adjusting the level adjusting bolt 25 when the column 50 is being built, the level of the PCa column 50 can be easily obtained. The level adjusting bolt 25 is connected to the PCa column 50.
The center of gravity of the PCa column 50 can be supported, so that when the vertical accuracy is adjusted by sandwiching the liner plate 27 around the PCa column 50, the PCa column 50 can be easily adjusted with a small force.
The vertical accuracy of the pillar 50 can be obtained. That is, since the level accuracy bolt and the vertical accuracy can be adjusted separately (independently) by arranging the level adjustment bolt 25, the liner plate 27 is not adjusted by trial and error as in the related art. An accurate construction of the PCa column 50 can be performed.

Further, according to this connection structure, the column main bar 11 and the column main bar 51 are connected via the first conductive member 22 and the second conductive member 62 even if they are not in direct contact in the splice sleeve 30. Electrically connected. Therefore, the pillar main bars 11 and 51 can be used as the down conductor of the lightning rod facility. Further, the contact area between the column main bar 11 and the first conductive member 22, the contact area between the column main bar 51 and the second conductive member 62, and the first conductive member 22 and the second conductive member Since the contact area with the member 62 can be sufficiently secured, the conductivity between the members can be improved.

As described above, the PCa column on each floor is composed of a column main bar,
The first conductive member and the second conductive member are electrically connected to PCa pillars arranged above and below. Although not shown, a conductive member having the same structure as the first conductive member 22 is provided on the PCa pillar provided on the lowest floor, and this conductive member is grounded in the ground. ing. on the other hand,
The second conductive member 6 is provided on the PCa pillar arranged on the top floor.
A conductive member having the same structure as that of 2 is provided, and a lightning rod is connected to this conductive member.

Accordingly, the lightning rod can be installed underground via the pillar main bar, the first conductive member, and the second conductive member provided on the PCa pillar on each floor without providing a special down conductor. Can be grounded. In the second embodiment,
Although the level adjusting bolt 25 is employed as a component of the first conductive member 22, the invention is not limited thereto, and the level adjusting bolt 25 may be a component of the second conductive member 62. Further, both the first conductive member 22 and the second conductive member 62 may be included.

Further, in the second embodiment, the level adjusting bolt 25 is employed as the level adjusting device. However, the present invention is not limited to this, and if the level of the PCa column can be adjusted,
A level adjusting device having another structure may be used. Further, the members fixed by the bolts 81, 82, 83, 84 in the second embodiment may be fixed by another method such as welding.

In the same manner as in the first embodiment, the lower end of the column main bar of the PCa column disposed on the lowermost floor may be grounded in the ground, and the upper end of the column main bar of the PCa column disposed on the uppermost floor. A lightning rod 93 may be connected to the section. (Embodiment 3) Next, Embodiment 3 according to the present invention will be described.
This will be described with reference to the drawings.

FIG. 3 is a longitudinal (vertical) sectional view showing a column connection structure according to a third embodiment of the present invention. In the third embodiment, the same members as those in the first embodiment are used.
The same reference numerals are given and the description thereof is omitted, and parts not directly related to the present invention are omitted in the drawings. FIG.
Then, in the column main bar 11 of the PCa column 10 on the lower floor,
The first conductive member 12 described in the above is disposed, and P
A part of the metal plate 55 of the second conductive member 62, which is described in the second embodiment, in contact with the first conductive member 12 is formed of the low-melting point metal 55A on the column main reinforcement 51 of the Ca column 50, Board 5
5, a heating device 55B for heating the low melting point metal 55A was provided.

That is, the PCa pillar 10 on the lower floor and the P
The connection structure with the PCa pillar 50 on the upper floor constructed on the floor 90 provided on the Ca pillar 10 is the first conductive member 12
Metal plate 15 and low melting point metal 55 of second conductive member 62
The metal plate 55 including the A is contacted, and the upper end of the column main bar 11 and the lower end of each of the column main bars 51 are inserted from both ends of the through hole 31 of the splice sleeve 30, and into the through hole 31. Mortar is filled and concrete is poured into necessary places.

At this time, the low melting point metal 55A is heated by the heating device 55B and the low melting point metal 55A is melted, so that the metal plate 55 containing the low melting point metal 55A and the metal plate 15
The connection with is more secure. Therefore, the electrical connection between them can be made even more reliable. Also,
Contact area between the column main bar 11 and the first conductive member 12,
Since the contact area between the column main bar 51 and the second conductive member 62 and the contact area between the first conductive member 12 and the second conductive member 62 can be sufficiently obtained, the distance between the respective members can be increased. Can be improved in conductivity.

As the low melting point metal 55A, for example, a so-called hard brazing material such as an alloy of silver and copper, an alloy of copper and zinc, and an alloy mainly containing aluminum, or a material mainly containing tin and lead are used. For example, the heating device 55B may be a thermite reaction material that is ignited and melted by adding an igniting agent such as magnesium to a heating wire or copper oxide and aluminum powder.

With this connection structure, the column main bar 11 and the column main bar 51 are electrically connected via the first conductive member 12 and the second conductive member 62 even if they are not in direct contact in the splice sleeve 30. Connected to. For this reason, pillar main bar 1
1 and 51 can be used as down conductors of the lightning rod facility. In this way, the PCa pillar on each floor is formed by the pillar main reinforcement, the first conductive member, and the second conductive member.
It is electrically connected to the PCa pillars arranged above and below.

Although not shown, a conductive member having the same structure as the first conductive member 12 is provided on the PCa pillar provided on the lowest floor, and this conductive member is underground. Grounded. On the other hand, a conductive member having the same structure as the second conductive member 62 is provided on the PCa pillar provided on the top floor, and a lightning rod is connected to this conductive member.

Accordingly, the lightning rod can be installed underground via the pillar main bar, the first conductive member and the second conductive member provided on the PCa column on each floor without providing a special down conductor. Can be grounded. In the third embodiment,
The structure in which a part of the metal plate 55 that is in contact with the metal plate 15 is formed of the low melting point metal 55A and the heating device 55B is disposed in the metal plate 55 has been described.
It is a matter of course that at least a part of the metal plate 55 in contact with the metal plate 55 may be made of the low melting point metal 55A, and the heating device 55B is provided in the metal plate 15.

At least a part of the metal plate 55 that contacts the metal plate 15 and at least a part of the metal plate 15 that contacts the metal plate 55 are both made of a low melting point metal 55A. Heating device 55B for heating 55A
May be provided on both the metal plate 15 and the metal plate 55. Furthermore, at least a part of the metal plate 15 in contact with the metal plate 55, or at least a part of the metal plate 55 in contact with the metal plate 15, or the metal plate 15 and the metal plate 55 in the connection structure according to the first embodiment. At least a part of the low melting metal 5
5A, and a heating device 55B for heating the low melting point metal 55A may be provided on one or both of the metal plate 15 and the metal plate 55.

Further, at least a part of the level adjusting bolt 25 in contact with the metal plate 55, or at least a part of the metal plate 55 in contact with the level adjusting bolt 25, or a level adjusting bolt in the connection structure according to the second embodiment. 2
At least a part of both the metal 5 and the metal plate 55 that are in contact with each other is made of the low melting point metal 55A.
A heating device 55B for heating A
And a structure provided on one or both of the metal plate 55.

In the same manner as in the first embodiment, the lower end of the column main bar of the PCa column disposed on the lowermost floor may be grounded in the ground, and the upper end of the column main bar of the PCa column disposed on the uppermost floor may be grounded. A lightning rod 93 may be connected to the section. (Embodiment 4) Next, Embodiment 4 according to the present invention will be described.
This will be described with reference to the drawings.

FIG. 4 is a longitudinal (vertical) cross-sectional view showing a column connection structure according to a fourth embodiment of the present invention. In the fourth embodiment, the same members as those in the first embodiment are used.
The same reference numerals are given and the description is omitted. P shown in FIG.
The Ca column 10 and the PCa column 50 are both welded to the upper portion of the metal plate 55 and the metal plate 55 protruding from the lower end surface thereof, and the floor 90 disposed on the upper portion of the PCa column 10 at the time of erecting.
And a metal plate 15 welded to the upper end of the conductive wire 34 and protruding from the surface of the floor 90.

In the fourth embodiment, this metal plate 15
Corresponds to the first conductive member according to claim 2 of the present invention,
The metal plate 55 corresponds to the second conductive member according to claim 2 of the present invention, and the conductive wire 34 corresponds to the conductor according to claim 2 of the present invention. PCa pillar 10 on the lower floor and PCa pillar 5 on the upper floor constructed on floor 90 arranged on PCa pillar 10
0 is connected to the metal plate 15 of the PCa column 10 and the PC
The metal plate 55 of the pillar 50 abuts, and the upper end of the pillar main bar 11 and the lower end of each of the pillar bar 51 are inserted from both ends of the through hole 31 of the splice sleeve 30, and the inside of the through hole 31 is inserted. Is filled with mortar and concrete is poured into necessary places.

Here, the metal plate 15 of the PCa column 10 and P
Since the contact area of the Ca column 50 with the metal plate 55, the contact area of the metal plate 15 with the conductive wire 34, and the contact area of the metal plate 55 with the conductive wire 34 can be sufficiently secured, the conductivity between the members is reduced. Performance can be improved. In this way, the PCa columns on each floor are electrically connected to the PCa columns arranged above and below by the metal plate 15, the conducting wire 34, and the metal plate 55.

Although not shown, the same metal plate 15, conductive wire 34 and metal plate 55 as those described above are also provided on the PCa pillar provided on the lowest floor. Grounded inside. On the other hand, the PC installed on the top floor
The same metal plate 15, conductive wire 34 and metal plate 55 as described above are also provided on the pillar a, and this metal plate 15 is connected to a lightning rod.

Therefore, the lightning rod must be grounded through the conductors provided on the PCa pillars of each floor and the metal plates disposed above and below the conductors without providing special down conductors. Can be. In the fourth embodiment, the metal plate 15 is welded to the upper end of the conductor 34 so that the conductor 34 and the metal plate 15 are welded.
However, the present invention is not limited to this, and the conductor 34 and the metal plate 15 may be integrally formed in advance, or if electrical connection is possible, such as bolts and nuts. You may connect using a member.

In the fourth embodiment, the metal plate 55 is welded to the lower end of the conductor 34 to make electrical connection between the conductor 34 and the metal plate 55. However, the present invention is not limited to this. 5
5 may be integrally formed in advance, or may be connected using members such as bolts and nuts, if electrical connection is possible. Furthermore, in the fourth embodiment, the metal plate 55 is provided on the lowest floor and is grounded underground. However, the present invention is not limited to this.
Instead of providing the metal plate 55, the conductor 34 disposed on the lowest floor may be grounded directly to the ground by another method such as grounding.

In the fourth embodiment, the metal plate 1 is also provided on the top floor.
5, the lightning rod is connected to the lightning rod. However, the present invention is not limited to this. For example, the conductor 34 disposed on the top floor is connected to the lightning rod without providing the metal plate 15 on the top floor. For example, the connection with the lightning rod may be performed by other methods.
Further, the conductor 34 used in the fourth embodiment may be a conductor having another structure.

Further, at least a part of the metal plate 15 in the connection structure according to the fourth embodiment which is in contact with the metal plate 55 may be made of the low melting point metal 55A. At least a part of the metal plate may be made of the low melting point metal 55A.
At least a part of both the metal plate 55 and the metal plate 55 may be made of the low melting point metal 55A. A heating device 55B for heating the low melting point metal 55A may be provided on one or both of the metal plate 15 and the metal plate 55. It is good also as the structure provided.

[0057]

As described above, in the column connecting structure according to the first aspect of the present invention, at least a part of the column of the upper floor is provided while being electrically connected to the reinforcing bar provided in the column of the lower floor. The first conductive member exposed on the surface of the floor, and the second conductive member that is electrically connected to the reinforcing bar provided on the pillar of the upper floor and at least partially exposed on the lower end surface of the pillar on the upper floor. And, to include the structure electrically connected to the conductive member, the lightning rod is connected to the reinforcing bar or the first conductive member of the pillar arranged on the top floor, and the pole of the pillar arranged on the bottom floor By grounding the reinforcing bar or the second conductive member in the ground, the lightning rod is a reinforcing bar, a second conductive member disposed in the pillar of the upper floor,
The ground is grounded through the first conductive member and the reinforcing bar disposed in the pillar on the lower floor. Therefore, the rebar can be used as a down conductor in a lightning rod facility. As a result, the cost of the lightning rod equipment can be significantly reduced, and the installation of the lightning rod equipment can be performed easily.

Further, a contact area between the first conductive member and the second conductive member, a contact area between the first conductive member and a reinforcing bar provided on a pillar on an upper floor, and Since the contact area between the second conductive member and the reinforcing bar provided on the lower floor column can be made sufficiently large, there is also an effect that the conduction performance between each member can be improved. .

Further, according to the second aspect of the present invention,
A first conductive member at least partially exposed on the surface of the floor on which the pillars of the upper floor are disposed, and a second conductive member at least partially exposed on the lower end surface of the pillars of the upper floor And pillars provided with a conductor connecting the first conductive member and the second conductive member are disposed vertically, and a second conductive member of the pillar of the lower floor, and an upper floor, The structure includes a structure in which the first conductive member of the pillar is electrically connected to the first conductive member of the pillar disposed on the top floor. By grounding the conductor of the pillar or the second conductive member disposed in the ground, the lightning rod can be grounded in the ground.

Here, the conductor only needs to have a length of substantially one floor. If the pillar is, for example, a PCa pillar, the conductor is preliminarily manufactured at the factory when the PCa pillar is formed. , The first conductive member, the conductor and the second conductive member are PCa
Since it can be installed on a pillar, only electrical connection between the first conductive member and the second conductive member should be performed on site. As a result, construction of the lightning rod facility can be easily performed.

Further, the contact area between the second conductive member of the pillar disposed on the upper floor and the first conductive member of the pillar disposed on the lower floor, The contact area with the body, and the contact area between the second conductive member and the conductor,
Since it can be widened, there is also an effect that the conduction performance between the members can be improved. Furthermore,
The connection structure for a pillar according to claim 2, wherein the lightning rod is provided with a first conductive member provided on an upper floor, regardless of the presence or absence of a reinforcing bar provided in the pillar, a conductor connected to the first conductive member, Via the second conductive member connected to this conductor, the first conductive member of the column further disposed on the lower floor, the conductor connected to this, and the second conductive member connected to this conductor It can be grounded through the conductive member. Therefore,
There is an effect that the present invention can be applied to a connection structure between columns having no reinforcing bars.

According to the pillar connection structure of the third aspect, at least one of the first conductive member and the second conductive member comprises a level adjusting device,
The level adjustment of the pillar and the electrical connection between the first conductive member and the second conductive member, which are performed when the pillar is built, can be simultaneously performed. Further, when the pillars on the upper floor are built, the center of gravity of the pillars on the upper floor can be taken by the level adjusting device, so that the level precision and the vertical precision can be adjusted separately. As a result, in addition to the above effects, there is an effect that the construction of the pillar can be simplified.

Further, the connecting structure of the pillar according to claim 4 is
At least one of the at least one of the first conductive member and the second conductive member, at least a part of a portion that contacts the other,
It is composed of a low melting point metal, and has a structure in which a heating device for heating the low melting point metal is inserted into at least one of the first conductive member and the second conductive member. The low melting point metal is melted, and the first conductive member and the second conductive member are integrated. Therefore,
In addition to the above effects, the reliability of the electrical connection between the first conductive member and the second conductive member can be further improved.

[Brief description of the drawings]

FIG. 1 is a vertical sectional view showing a column connection structure according to a first embodiment of the present invention.

FIG. 2 is a vertical sectional view showing a connection structure of a pillar according to a second embodiment of the present invention.

FIG. 3 is a vertical sectional view showing a column connection structure according to a third embodiment of the present invention.

FIG. 4 is a vertical sectional view showing a connection structure of a pillar according to a fourth embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 PCa pillar 11 Pillar main bar 12 First conductive member 22 First conductive member 34 Conductor 50 PCa pillar 51 Pillar bar 52 Second conductive member 62 Second conductive member 90 Floor 93 Lightning rod

──────────────────────────────────────────────────続 き Continuation of front page (72) Inventor Hidehisa Takahashi 1-25-1, Nishishinjuku, Shinjuku-ku, Tokyo Taisei Corporation (56) References JP-A-6-280349 (JP, A) (58) ) Surveyed field (Int.Cl. ⁷ , DB name) H02G 13/00 E04B 1/16 E04B 1/21

Claims (4)

(57) [Claims] 1. A pillar connection structure for vertically connecting pillars having a reinforcing bar disposed therein, wherein the pillars are electrically connected to the reinforcing bars disposed in the pillars on the lower floor and at least a part of the pillars is on the upper floor. The first conductive member exposed on the surface of the floor where the upper floor is disposed is electrically connected to the reinforcing bar disposed on the pillar on the upper floor, and at least a part is exposed on the lower end surface of the pillar on the upper floor. A structure in which the second conductive member is electrically connected to the second conductive member. 2. A pillar connection structure for connecting pillars up and down, wherein at least a part of the first conductive member is exposed at least on a surface of a floor on which pillars of an upper floor are arranged, and Are vertically arranged columns having a second conductive member exposed at the lower end surface of the column of the upper floor, and a conductor connecting the first conductive member and the second conductive member. And a second conductive member of the lower floor pillar and a first conductive member of the upper floor pillar, which are electrically connected to each other. 3. The pillar connection structure according to claim 1, wherein at least one of the first conductive member and the second conductive member comprises a level adjusting device. 4. A method according to claim 1, wherein at least a part of at least one of the first conductive member and the second conductive member, which is in contact with the other, is made of a low melting point metal. The connection structure for a pillar according to any one of claims 1 to 3, wherein a heating device for heating the low melting point metal is inserted into at least one of the second conductive members.