JP2992676B2 - Metal fittings for connecting steel unit basement and concrete foundation - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal fitting for connecting a steel unit basement to a concrete foundation, and more particularly, to a metal of a steel unit basement constructed by joining a plurality of box-shaped units. By protruding outward from the outer shell plate and burying it in a concrete foundation formed around the basement, the concrete foundation and the steel unit basement are joined together in a strongly integrated manner. The present invention relates to a fitting.

[0002]

2. Description of the Related Art As a steel unit basement of this type, the applicant of the present invention has proposed that at least the outer plate of the inner and outer plates arranged opposite to each other at an appropriate distance from each other is made of a metal plate material. A wall panel provided with a heat insulating layer so as to be integrally fixedly connected via a plurality of core members such as shaped steel members arranged at predetermined pitch intervals between the plates, and to surround at least the outer periphery of the core member. A steel unit type basement with a skeleton built by joining a plurality of box-shaped units with a gate-shaped frame structure on the short side and a shock-resistant wall structure on the long side by the floor panel and ceiling panel It has been developed and a patent application has been filed, for example, in Japanese Patent Application Laid-Open No. Hei 6-150684.

[0003] In the steel unit basement having the above-mentioned configuration, a box-shaped unit manufactured in a factory is transported to an installation site, and is buried with a crane or the like. It can be constructed in a short period of time, and not only can the construction cost be significantly reduced compared to conventional ordinary cast-in-place concrete basements, but it is also made of concrete that easily forms dew through water or moisture. Different, waterproof, moisture-proof, heat-insulating, soundproof,
It has excellent anti-condensation properties, has a comfortable habitability such as stabilization of indoor temperature, has structural strength to withstand large earth pressure and mounting load, and has a steel body weight due to being made of steel In addition to this, it has many features such as being superior in countermeasures against buoyancy by groundwater level by fixing the main body to the concrete foundation with anchor bolts.

[0004] The above-mentioned steel unit basement is generally installed immediately below the upper building, at a location where a part of a reinforced concrete foundation designed and constructed for the upper building is cut off. Therefore, unequal settlement or the like is likely to occur in the upper building in the installation state of the basement. As a measure to prevent the occurrence of such unequal settlement, conventionally, at the stage of factory production of a box-shaped unit constituting a basement frame, a metal outer plate of each unit is projected outward. The reinforcing steel is welded in the same way as above, and this reinforcing steel is fixed to the reinforcing steel in the reinforced concrete foundation for the upper building and buried in the cocrete foundation, or embedded in the backfill around the basement. The concrete foundation and the steel unit basement were strongly integrated with each other. That is, as a metal fitting for connecting the steel unit basement and the concrete foundation, only a single reinforcing bar directly welded to the metal outer plate of the steel unit basement has conventionally been used.

[0005]

However, as described above, in the case of a joint fitting made of a single reinforcing bar, the reinforcing bar is welded to the metal outer plate of each unit at the stage of factory production, so that the unit is not connected. When transporting to the installation site, it is necessary to bend the reinforcing bar so that the projecting reinforcing bar does not get in the way, and after installing the unit, it must be folded back and buried in a concrete foundation. Because the welding length when directly welding itself is short and the mounting strength to the outer plate is low, the bending force due to the above bending and folding back causes the reinforcing steel to break at the welding location, Easy to withdraw from,
As a result, there is a technical problem that a sufficient strength cannot be obtained as a bonding strength between the concrete base and the steel unit basement using the reinforcing bar (fitting metal). Also, if you want to change the buried length in a concrete foundation in response to various conditions, such as selecting the required length from multiple types of reinforcing bars with different lengths and welding,
It is necessary to prepare several types of rebar with different lengths,
There was also a problem that this would increase construction costs.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described circumstances, and it is possible to secure a sufficient burial length in a concrete foundation while suppressing the amount of outward protrusion during unit transportation. It is possible to increase the welding length and to attach it very firmly without causing breakage etc. to the outer plate, and to reliably exert the predetermined coupling function. It is an object of the present invention to provide a metal fitting for connecting a steel unit type basement and a concrete foundation which can easily change the length of burial in a concrete foundation and can reduce construction costs.

[0007]

In order to achieve the above object, a metal fitting for connecting a steel unit type basement and a concrete foundation according to the present invention has at least one of inner and outer plates which are opposed to each other at an appropriate distance from each other. The outer plate is made of a metal plate material, and the inner and outer plates are integrally fixedly connected to each other via a plurality of core members such as shaped steels arranged at a predetermined pitch interval between the two plates, and at least the core material The short side direction is a gate-shaped ramen structure by a wall panel, a floor panel, and a ceiling panel provided with a heat insulating layer so as to surround the outer periphery of the frame,
The long side direction is formed around the basement by projecting outward from the metal outer plate of a steel unit basement constructed by joining a plurality of box-shaped units with a shear wall structure. By burying it in a concrete foundation
A fitting for strength integrally coupling the said concrete foundation and steel-unit basement, on one end portion in the axial direction of the metallic cylindrical member, the outer large diameter than the cylindrical-shaped member
Peripheral surface can be welded to the outer surface of metal skin of unit basement
Flange portions together is integrally secured to the concentric state, the fitting body having a female thread is formed in the through-state over its entire length to the inner peripheral surface of the cylindrical member including the flange portion, the outer periphery of the flange portion has an outer peripheral length outer peripheral surface of greater than the length, and are inserted and weldable hole and the other end in the axial direction of the cylindrical member is formed in the bracket body at the center portion, that <br/> A welding seat plate whose outer peripheral surface can be welded to the outer surface of the metal outer plate of the unit basement,
When welding to the outer surface of the metal outer plate of the chamber, it can be screwed into the female screw of the metal fitting body from the other end side in the axial direction of the cylindrical member, and welded to the other end of the cylindrical member. Dissolution
Weld the seat plate to the outer surface of the metal skin of the unit basement.
When fitting, insert the cylindrical member into the female thread of the
It is characterized in that it consists of a combination with a rebar buried in a concrete foundation that can be screwed and connected from the other end side , and at the stage of factory production of a box-shaped unit constituting a unit type basement, The other end in the axial direction of the tubular member of the metal fitting body is inserted into the center hole of the welding seat plate and welded, and the welded seat plate is formed along the outer peripheral surface of the metal outer plate of each unit. When the unit is transported, either by welding to the outer surface, or by welding the flange of the bracket main body to the outer surface of the metal outer plate of each unit along the outer peripheral surface, and attaching only the bracket main body to the unit At the installation site, the reinforcement is screwed into the female screw of the bracket body and connected to the concrete foundation as a whole as It is possible to sufficiently secure the 設長 of. Also, in any of the above installations,
By increasing the welding length of the unit to the metal outer plate, it is possible to obtain a strong mounting strength such that the welded portion is not broken even if bending force acts on the reinforcing steel after mounting, and the flange or High pull-out strength can be obtained due to the presence of the flange and the welding seat plate. Further, by adjusting the screwing amount of the reinforcing bar into the female screw formed on the metal fitting main body, it is possible to easily and arbitrarily adjust the burying length of the entire coupling metal fitting including the reinforcing bar in the concrete foundation. .

Here, soft metal or stainless steel is generally used as a constituent material of the metal fitting body, and as the reinforcing bar, ordinary reinforcing bars and deformed reinforcing bars can be selectively used. Further, the welding of the welding seat plate or the flange of the metal fitting body to the metal outer plate is generally performed by fillet welding.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing the outline of the installation procedure of a steel unit type basement according to the present invention, in which 1 (1A, 1B,..., 1N)
A plurality of basement units with a box-shaped cross section that are manufactured in a factory with standardized dimensions and shapes, and that carry an arbitrary number corresponding to the desired volume to the construction site and embedded and installed underground. 1 Adjacent objects are joined via a field joint flange structure (not shown).
The frame is connected to form a skeleton, which is fixed on a reinforced concrete solid foundation 24 with an anchor bolt 26 via a base plate 25 to form a steel unit-type basement X of a desired size.

Each of the above units 1 is manufactured by a factory.
As shown in FIGS. 2 and 3, the wall panel 2A, the floor panel 2B, and the ceiling panel 2C are formed in a box-shaped section having a gate-shaped rigid frame structure in the short side direction and a shock-resistant wall structure in the long side direction. Each of these panels 2A, 2B and 2C is basically composed of an outer plate 3 made of a metal plate material such as a steel plate and a non-metallic plate which is disposed inside the outer plate 3 in parallel at an appropriate distance in parallel. The inner plate 4 made of a base plate is integrally fixedly connected to the inner and outer plates 4 and 3 via a plurality of core members 5 arranged at a predetermined pitch between the inner and outer plates 4 and 3. Each panel 2 in contact with the ground sand and soil
A, 2B, 2C, the entire outer surface of the metal outer plate 3
An anticorrosion coating 27a is formed, and a protective coating 27b made of synthetic resin mortar is formed on the surface of the rust / anticorrosion coating 27a. In addition, each of the above panels 2
As shown in FIG. 2, the outer periphery of each core member 5 in A, 2B, and 2C surrounds the channel 6, the base stopper member 7, and the wooden base member 8 so that they are not exposed.
Urethane foam 21 is continuously sprayed on the inner surface of each outer plate 3 at an appropriate thickness.

The core member 5 is welded to a metal material, specifically, a channel 6 which is one of shaped steel and a web portion near an inner end flange portion of the channel 6 at appropriate intervals in a longitudinal direction thereof. A wooden base 8 fixed and held by nailing or bonding means via an L-shaped base fixing member 7,
In the case of the wall panel 2A and the ceiling panel 2C, FIG.
As shown in FIG. 3, another wooden base 9 is fixed to the inner surface of the wooden base 8 by nailing means or the like in a state perpendicular to the channel 6 and the wooden base 8 at appropriate pitch intervals in the longitudinal direction thereof. The inner plate 4 made of a non-metallic plate material, specifically, a plaster board, is fixed to the inner surface of the inner wooden base 9 by an adhesive means or a nail. And, the inner surface of the inner plate 4 is finished with a cloth 10 and
In the case of the floor panel 2B, the wooden base 8 in the core 5 is used.
The inner plate 4 made of a non-metallic material, specifically, veneer is fixed to the inner surface (upper surface) of the wooden base 8 by fixing adhesive means, nailing, or the like. The flooring 11, which is an example of a finishing material, is adhered to the inner surface, and finishing is performed. Note that the wall panel 2A, the ceiling panel 2C, and the floor panel 2B are all in close contact with the outer surface of the outer end flange portion of the channel 6 in the core member 5, and the outer plate 3 is made of a metal plate material such as a steel plate.
Are fixed by welding means or the like.

Each unit 1 (1
A, 1B,..., 1N) are joined and connected to form a steel unit-type basement X composed of a skeleton. For example, as shown in FIG. 4, a part of a reinforced concrete foundation 12 for an upper building is cut off. At this time, the metal fittings 13 used to strongly integrally connect the steel unit basement X and the reinforced concrete foundation 12 for the upper building are as follows. It is configured.

FIG. 5 is an exploded perspective view showing the components of the above-mentioned fitting 13, and FIG. 6 is a longitudinal sectional view thereof. As is clear from these figures, the fitting 13 is The metal fitting body 13A and the welding seat plate 13 are roughly classified.
B and a combination of a reinforcing bar 13C embedded in the reinforced concrete foundation 12 for the upper building. The flange body 13A has a flange 15 having a circular outer peripheral surface 15a having a diameter larger than that of the cylindrical member 14 at one axial end of a cylindrical member 14 made of soft iron or stainless steel.
Are integrally fixed concentrically, and the flange 1
A female screw 16 is formed in the inner peripheral surface of the cylindrical member 14 including the first through-hole 5 throughout its entire length. The welding seat plate 13
B has a square outer peripheral surface 13a having an outer peripheral length larger than the outer peripheral length of the circular outer peripheral surface 15a of the flange portion 15 in the metal fitting body 13A.
A cylindrical hole 17 which can be inserted and welded to the other end in the axial direction of the cylindrical member 14 at A is formed so that the square outer peripheral surface 13 a can be welded to the outer surface of the outer plate 3 of each unit 1. Have been. In addition, the reinforcing bar 13C is a deformed reinforcing bar 1.
There are two types, that is, 3c1 and ordinary reinforcing bar 13c2. At their ends, a male screw 18 that can be screwed and connected to the female screw 16 of the metal fitting body 13A is formed.

Next, a brief description will be given of a process from the factory production to the installation and construction of the steel unit type basement X having the above configuration. Box-shaped unit 1 constituting a steel unit basement X (1A, 1B, ..., 1N)
At the stage of factory production, as shown in FIG.
3, the other end in the axial direction of the cylindrical member 14 of the gold odor main body 13A is inserted and welded into the hole 17 at the center of the welded seat plate 13B, and the welded seat plate 13B is moved along its outer peripheral surface 13a. 8, the flange 15 of the metal fitting body 13A is attached to the outer surface of the metal outer plate 3 of each unit 1 along its outer peripheral surface 15a as shown in FIG. Metal body 1 welded to the outer surface
Only 3A is attached to the unit.

In this state, each unit 1 (1A, 1B,
, 1N) is transported to the site, but only the metal fitting body 13A protrudes outward during the transport, and the amount of outward projection is small and does not hinder the transportation.
At the time of reaching the installation site, the fitting main body 1
As shown in FIG. 9 or FIG.
3C (deformed reinforcing bar 13c1 or ordinary reinforcing bar 13c2)
A cylindrical member from the flange portion 15 side or opposite to the flange portion 15
By screwing and connecting from the axial end side of 14, the entire fitting 13 including the reinforcing bar 13 </ b> C is buried in the reinforced concrete foundation 12 for the upper building, and the burial length in the reinforced concrete foundation 12 is reduced. It is possible to secure enough. 7 and 8, the welding length of the unit 1 to the metal outer plate 3 is increased, and the reinforcing bar 13C after the attachment is attached.
Strong mounting strength is obtained so that the welding location is not broken even if bending force acts on
By the presence of the flange 15 or the flange 15 and the welding seat plate 13B, a strong pull-out strength can be obtained for the reinforced concrete foundation 12. Further, by adjusting the screwing amount of the reinforcing bar 13C into the female screw 16 formed on the metal fitting body 13A, the embedded length of the entire fitting 13 including the reinforcing bar 13C in the concrete foundation 12 can be easily and arbitrarily adjusted. It is possible to

In the case of the construction examples shown in FIGS. 7 and 9,
Even if the ordinary reinforcing bar 13c2 is used as the reinforcing bar 13C,
The flange portion 15 of the metal fitting body 13A exerts a strong pull-out resistance, so that the integral joining strength between the steel unit basement X and the concrete foundation 12 can be increased, and the construction example of FIGS. In the case, the concrete foundation 12 is formed by using the deformed reinforcing bar 13c1 as the reinforcing bar 13C.
Between the steel base unit X and the concrete foundation 12 can be increased by exerting a large frictional force between them.

[0017]

As described above, according to the present invention, at the stage of factory production of a box-shaped unit, the metal fitting body is welded to the outer surface of the metal outer plate of each unit using the welding seat plate. Alternatively, it is possible to weld the flange of the metal fitting body to the outer surface of the metal outer plate of each unit, or to attach only the metal fitting body to the unit, and to reduce the amount of outward projection when transporting the unit. While the unit can be transported conveniently while holding it down, simple work such as screwing a rebar into the female thread of the bracket body at the installation site can be performed, so that the entire length of the mounting bracket can be embedded in concrete. Can be secured sufficiently. Moreover, regardless of the use of the welding seat plate, the welding length of the unit to the metal outer plate is increased, so that even if a bending force acts on the reinforcing bar after installation, the welding location is not broken. In addition to obtaining such a strong mounting strength, a high pull-out strength can be obtained due to the presence of the flange or the flange and the welding seat plate, and the bonding strength between the unit-type basement and the concrete can be increased. further,
By adjusting the amount of screwing of the rebar into the female screw formed on the metal fitting body, the length of the reinforcing metal in the concrete can be easily and arbitrarily set by simply preparing a type of reinforcing steel. And the construction cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an outline of an installation procedure of a steel unit type basement according to the present invention.

FIG. 2 is a partially broken side view showing the configuration of the unit.

FIG. 3 is a front view showing a configuration of a unit.

FIG. 4 is a longitudinal sectional view showing a construction state of a steel unit type basement.

FIG. 5 is an exploded perspective view of a constituent member of a coupling fitting.

FIG. 6 is a longitudinal sectional view of FIG.

FIG. 7 is an enlarged side view of a main part showing an example in which a fitting main body of a coupling fitting is attached to an outer plate of a unit.

FIG. 8 is an enlarged side view of a main part showing another example in which a fitting main body of a coupling fitting is attached to an outer plate of a unit.

9 is an enlarged vertical sectional side view of a main part showing a state in which the fitting is buried in a concrete foundation in the mounting example of FIG. 7;

FIG. 10 is an enlarged longitudinal sectional side view of a main part showing a state in which a fitting is buried in a concrete foundation in the example of attachment in FIG. 8;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 (1A, 1B, ..., 1N) Unit 2A, 2B, 2C Panel 3 Metal outer plate 4 Inner plate 5 Core material 12 Concrete base 13 Joining metal fittings 13A Metal fitting body 13B Weld seat plate 13C Reinforcing bar 14 Cylindrical member 15 Flange 16 Internal thread 17 Circular hole 21 Urethane foam (insulation layer forming material) X Steel unit basement

Claims (1)

(57) [Claims] At least one of the inner and outer plates, which are opposed to each other at an appropriate distance from each other, is made of a metal plate.
The inner and outer plates are integrally fixedly connected to each other via a plurality of core members such as shaped steel members arranged at a predetermined pitch interval between the two plates, and a heat insulating layer is formed so as to surround at least the outer periphery of the core material. The wall panel, floor panel, and ceiling panel provided are made of steel by joining a plurality of box-shaped units with a gate-shaped frame structure in the short side direction and a shock-resistant wall structure in the long side direction. The concrete base and the steel unit basement are integrated with each other by being buried in the concrete foundation formed around the basement, protruding outward from the metal outer panel of the unit basement. A metal fitting for coupling, wherein one end of the metal cylindrical member in the axial direction has a diameter larger than that of the cylindrical member and an outer peripheral surface of the metal outer plate of the unit basement.
With weldable flange portion is integrally fixed to concentric to the outer surface, the fitting body having a female thread is formed in the through-state over its entire length to the inner peripheral surface of the cylindrical member including the flange portion, the It has an outer peripheral surface with an outer peripheral length larger than the outer peripheral length of the flange,
In addition, a hole is formed in the center of the metal fitting main body so that the other end of the cylindrical member in the axial direction can be inserted and welded, and the outer peripheral surface is formed on the outer surface of the metal outer plate of the unit basement. The welding seat plate that can be welded to the
When welding to the outer surface, insert the cylindrical part
Screw-connectable from the other end side in the axial direction of the timber, or
In addition, a welded seat plate welded to the other end of the cylindrical member is united.
When welding to the outer surface of the metal skin in the basement,
To the female thread of the body from the other end of the cylindrical member in the axial direction.
A metal fitting for connecting a steel unit-type basement and a concrete foundation, wherein the metal foundation is made of a combination of a reinforcing steel buried in a concrete foundation and which can be connected to the concrete foundation.