JP6710572B2 - Thermal insulation foundation structure of building - Google Patents

Description

The present invention relates to a heat insulating foundation structure (vertical foundation) that constitutes a part of a building, and is particularly suitable for a heat insulating foundation structure of a wooden house or a prefabricated house.

In wooden houses and prefabricated houses, a concrete foundation is constructed on the ground and then the upper part of the building is constructed on the foundation (vertical foundation). A formwork is indispensable for the construction of concrete foundations, and as this formwork, a product made of plywood or a steel plate is commonly used. It is held in an upright posture by such things as arranging reinforcing bars and anchor bolts for fixing the base in the space formed by the inner and outer molds, then placing concrete and removing the mold after the concrete has solidified.

As described above, in the general foundation work, since the work of assembling the formwork and the work of disassembling the work are a set, there is a problem in that the construction takes a lot of time. Therefore, paying attention to the fact that a foamed resin heat insulating panel is used for heat insulation, it has been proposed to use the heat insulating panel as a residual formwork to suppress the time and effort of construction.

As an example, Patent Document 1 discloses that a large number of protrusions are formed on a wide inner surface of a heat insulating panel, which is a concrete placing surface, and the protrusions of the heat insulating panels facing each other are connected by a vertical streak member. There is. The vertical bar member is equivalent to a separator, and has hook-shaped locking parts that face downward on both ends, while the protrusions of the heat insulation panel are formed with holes into which the locking parts of the vertical bar members fit. There is.

On the other hand, in Patent Document 2, when a panel made of lightweight cellular concrete is used as a residual form, a flat bar (strip plate) vertically long and long is embedded in the panel, while an angle member is horizontally provided on the inner surface of the panel. Positioned, inserted into the angle material and screwing the bolts into the flat bar to fix the angle material to the inner surface of the panel, and connect the angle materials of the panels arranged facing each other with the screw type separator. It is disclosed.

Japanese Patent Laid-Open No. 09-296551 JP, 08-060769, A

In Patent Document 1, connection of joints is easy, but there is a problem that a dedicated mold is required to mold the heat insulating panel in the state where the protrusion is provided, and the manufacturing cost increases. Also, as a more essential problem, since the joint is directly fitted in the hole of the protrusion in the heat insulation panel, the pressure when placing concrete is concentrated on the hole of the heat insulation panel, and therefore, , there is a problem that may not be possible to ensure the strength is high.

Further, in Patent Document 1, in order to maintain the gap between the facing heat insulating panels at a predetermined width, the protrusions of the facing heat insulating panels must be arranged so as to face each other accurately, but in the actual construction, the heat insulating panel is used. It is necessary to adjust (cut) the left and right widths of the two to match them on site, and there is a concern that the projections of the heat insulating panels facing each other will be displaced in the left and right directions and cannot be connected by joints. Therefore, Patent Document 1 also has a problem that the adaptability to the site is poor.

On the other hand, in Patent Document 2, since the angle member is fixed to the inner surface of the panel, it is presumed that high strength can be secured even when applied to a heat insulating panel made of foamed resin. However, in Patent Document 2, since the angle member has to be fixed to the panel at a large number of places, a problem that a great deal of time is required for the fixing work and the separator is a screw type, and thus a great amount of time is required for the attachment. There is a problem.

The present invention has been made to improve the present situation, and relates to an insulating foundation structure in which a heat insulating panel made of foamed resin is used as a residual form (discard form), and it is easy and highly reliable. The purpose is to provide the technology that can be applied by nature.

The present invention is
“ A pair of heat insulating panels that are erected in parallel with the wide inner surfaces that are concrete placing surfaces facing each other and a connecting device that holds the facing heat insulating panels at a predetermined interval are provided between the heat insulating panels. concrete of the foundation space is pouring "
That is the basic configuration.

In the invention of claim 1, first,
``The connecting device is attached to each of the brackets arranged in a horizontal direction in a discrete manner and attached to each of the heat insulation panels, and to the group of brackets in a posture of extending horizontally in a wide posture along a wide inner surface of each heat insulation panel. an elongated relay bar digits with, and a group of joint bar connecting at intervals parallel-arranged relayed bar across the underlying space "
Is configured.

Furthermore, in the present invention,
"The relay bar has a substrate in a vertical posture overlapping a wide inner surface of the heat insulation panel and a flange portion in a substantially horizontal posture, and the flange portion of the relay bar has a connection hole for connecting the joint bar bar. While many are scattered at random,
Said bracket, said an embedded portion that is inserted from below or from above the insulating panel, the have an exposed portion exposed to the base space, on the exposed portion, the substrate of the relay bar of the insulation panel an upward clamping portion for holding the overlapping state wide inner surface is provided, wherein between the wide inner surface of the insulating panel and the clamping portion of the bracket, vacant holding space in which the substrate of the relay bar is inserted from above There is "
Is configured.

The invention of claim 2 embodies the invention of claim 1 , and in this invention,
“The bracket is provided with a stopper for holding the relay bar immovably upward, and the stopper is flexibly deformable so that the board of the relay bar is allowed to be inserted into the holding space. "
Is configured.
The invention of claim 3 is the claim 1 or 2,
“At the end of the joint bar, an engaging claw that elastically deforms and fits into the connection hole of the relay bar is provided. ”
Is configured.

According to the invention of claim 4 , in claim 1 ,
“The heat insulation panel is stacked on the upper part, and the base plate of the relay bar is set so as to overlap with the wide inner surface of the heat insulation panel which is vertically adjacent to each other, while the embedded portion of the bracket is vertically adjacent to each other. It's set to fit a fitted insulation panel. ''
Is configured.

In the present invention, the joint bar is attached to the bracket through the relay bar, but since the bracket can be set to a shape and size that does not place an excessive load on the heat insulating panel, the load concentrates on a narrow portion of the heat insulating panel. This can be prevented and high strength can be secured. Further, since the relay bar is attached to the exposed portion of the bracket, it is possible to set the heat insulation panel on the site and then attach the relay bar, and therefore, the workability is excellent.

Further, since the horizontally long relay bars are connected by the joint bar, the relay bars can be connected by the joint bar regardless of the position of the bracket. Therefore, it is very easy to adjust the displacement of the joint bar while avoiding the interference with the reinforcing bar, and therefore, the site adaptability is excellent. Also, even if the left and right lengths of the heat insulation panel are cut according to the site, there is no effect on the connection between the relay bar and the joint bar. In this respect as well, it has excellent on-site adaptability and is extremely practical.

The relay bar is attached to the exposed portion of the bracket, but can be attached in one-touch by adopting a fitting method from above, for example. Further, the fitting of the joint bar to the relay bar can also be done by fitting from above, so that the joint bar can be mounted with one touch. Also from the viewpoint of easy attachment of the relay bar and the joint bar, it can greatly contribute to the improvement of construction efficiency.

The relay bar can be arranged at a position away from the wide inner surface of the heat insulating panel. However, in the present invention, when the relay bar is formed into an angle system and its substrate is stacked on the wide inner surface of the heat insulating panel, the heat insulating panel and the heat insulating panel are insulated. Integrated with the panel, the overall structure is sturdy. For this reason, it has high strength enough to withstand the pressure at the time of pouring concrete, and the dimensional accuracy can be improved.

In addition, the relay bar can be attached by sliding the board downward on the wide inner surface of the heat insulation panel and inserting the board between the bracket sandwiching portion and the heat insulation panel. Can be done Further, since the joint bar can be connected to the relay bar only by inserting the end portion into the connection hole of the relay bar, the joint bar can be connected with one touch. As described above, since the connection between the relay bar and the joint bar is very simple, the workability is excellent.

Further, the relay bar can be displaced in the longitudinal direction thereof, so that it is easy to arrange the relay bars of the heat insulating panels facing each other so that their connection holes are exactly aligned with each other. Therefore, it is also possible to easily connect the relay bars to each other with the joint bars in a state of being held at a constant interval, and it is possible to construct the width dimension of the concrete foundation with high dimensional accuracy.

Furthermore, it is also very easy to arrange the relay bar so as to straddle the heat insulating panels that are horizontally adjacent to each other. Therefore, the same effect as connecting adjacent heat insulating panels with a relay bar is exerted, and the posture and stability of the heat insulating panels can be significantly improved.

In concrete placing work, concrete is vibrated by a vibrator in order to eliminate air bubbles, and then an upward force may be applied to the relay bar or the joint bar. With respect to this point, the provision of the flexural deformation type stopper as in claim 2 has an advantage that the relay bar can be prevented from being detached or lifted up without impairing the ease of mounting the relay bar. Further, if the joint bar is provided with the elastically deformable engaging claws as in claim 3 , there is an advantage that the joint bar can be surely prevented from coming off without impairing the ease of mounting.

When the configuration of claim 4 is adopted, since the embedded portions of the bracket are fitted in the upper and lower heat insulating panels, the upper and lower heat insulating panels can be accurately positioned in the thickness direction. Further, since the board of the bracket overlaps the wide inner surfaces of the upper and lower heat insulating panels, there is an advantage that the upper and lower heat insulating panels can be accurately positioned by the bracket.

In the case of a heat-insulating substructure for a wooden house, it is preferable to use a heat-insulating panel to which an anti-termite component is added. In particular, as disclosed in Japanese Patent No. 5235066, the use of thiamethoxam as an anti-termite agent is particularly preferable because it can prevent termite feeding damage while ensuring safety for humans and animals.

It is a figure which shows the heat insulation type basic structure to which this invention is applied, (A) is a partial top view, (B) is a perspective view of a projected corner part . It is a figure which shows the example of arrangement|positioning of a heat insulation panel. It is a separation perspective view of a heat insulation panel and a bracket in a 1st embodiment. It is a partial separation perspective view showing the upper part of a 1st embodiment. It is a separation perspective view which shows the lower part of 1st Embodiment. (A) is a perspective view of a main part before pouring concrete, and (B) is a sectional view taken along line BB of (A). FIG. 1 shows the first embodiment, (A) shows a relationship between a bracket and a relay bar, (B) shows a relationship between a relay bar and a joint bar, and (C) shows an end portion of the joint bar. A bottom view and (D) are top views of the example of arrangement of a relay bar. It is a figure which shows the example of arrangement|positioning of a relay bar. In 2nd Embodiment, it is a separated front view of a three-stage heat insulation panel. It is a separation perspective view of the heat insulation panel which concerns on 2nd Embodiment. In 2nd Embodiment, it is a separated perspective view of an intermediate bracket and an intermediate heat insulation panel. In the second embodiment, (A) is a vertical sectional view of a portion of a bracket, (B) is a partial plan view of a relay bar, and (C) is a partial bottom view of a joint bar. (A) is a perspective view of a third embodiment showing an anchor bolt attaching device, and (B) is a view showing a fourth embodiment which is a connecting means of relay bars arranged in a line. (A) is a plan view of the fifth embodiment, (B) is a sectional view taken along the line BB of (A), (C) is a perspective view of the sixth embodiment, and (D) is a side view of the seventh embodiment. Is. (A) is a perspective view of 8th Embodiment, (B) is a perspective view of 9th Embodiment.

(1). Basic Arrangement Relationship Next, an embodiment of the present invention will be described with reference to the drawings. First, the basic structure of the arrangement of the heat insulating panel will be described with reference to FIG. This embodiment is applied to a heat insulating foundation structure (vertical foundation) of a wooden house. The concrete foundation has a plan view shape that corresponds to the floor plan of the building.First, the outer foundation corresponding to the location of the outer wall of the building and the inner foundation corresponding to the boundary of the adjacent rooms. have. For convenience, the foundation of the outer peripheral portion is referred to as the outer foundation 1, and the inner foundation is referred to as the inner foundation 2.

In FIG. 1, it is assumed that a 6-tatami Japanese-style room exists as a corner room, and the periphery of the room is composed of an outer foundation 1 and an inner foundation 2. The inner foundation 2 is connected to the outer foundation 1 in a T-shape. The inner foundations 2 are connected in a cross shape.

The size of the tatami mat varies, but here it is assumed that the long side is 1800 mm and the short side is 900 mm. Therefore, the dimension of the 6 tatami mats is 3600 mm on the long side and 2700 mm on the short side.

On the other hand, the outer foundation 1 and the inner foundation 2 are made up of a concrete foundation 3 and a group of heat insulation panels sandwiching the concrete foundation 3 from both sides, and the heat insulation panel is used as a residual formwork. The heat insulation panel includes an outer corner heat insulation panel 4a that constitutes the outer surface of the projecting corner of the building, an inner corner heat insulation panel 4b that constitutes a corner portion inside the outer periphery and a T-shaped or cross-shaped connection portion, and a standard flat surface of 2000 mm width. It is composed of a heat insulating panel 4c and an adjusting flat heat insulating panel 4d whose lateral width is adjusted on site.

As the heat insulating panel, those having different shapes and widths as described above are used, but when collectively referred to, the reference numeral 4 is affixed and simply referred to as the heat insulating panel 4. Note that the parallel hatched lines in FIG. 1A are added to clarify the range, and are not a cross-sectional display.

The left and right lateral widths of the adjustment flat insulation panels 4d are different. The outer width of the outer heat insulating panel 4a is set to 400 mm, and the outer width of the inner heat insulating panel 6 is set to 200 mm. Therefore, in the short side portion, the distance between the two inner corner heat insulating panels 4b is 2300 mm. Therefore, of the two short sides, at the location of the outer foundation 1 located on the right side, one standard flat insulation panel 4c and 300 mm adjustment flat insulation panel 4d are used.

On the other hand, in the part of the inner foundation 2 located on the left side of the two short sides, two flat adjustment heat insulating panels 4d having substantially the same width are used. Since the adjustment flat heat insulation panel 4d is made by cutting the standard flat heat insulation panel 4c on site, it is preferable that the number of the adjustment flat heat insulation panels 4d be as small as possible in order to reduce the time and effort of the construction. If the width of 4d becomes too small and there is a hindrance, it is also possible to dispose two adjusting flat insulation panels 4d at one side. In any case, since it is necessary to adjust the dimensions, the ends of the heat insulating panels 4 arranged to face each other are often not aligned.

The width of the concrete foundation 3 has a size corresponding to the size of the base (square member) to be placed thereon, and is generally one of three types of 100 mm, 120 mm, and 150 mm. It is possible to change the width dimension of the concrete foundation 3 depending on the location in one building, but in the present embodiment, it is assumed that the concrete foundation 3 is 100 mm in its entirety. The thickness of the heat insulating panel is often divided into three types of 50 mm, 75 mm, and 100 mm, but in this embodiment, the thickness is displayed as 50 mm.

The height (vertical width) of the heat insulating panel 4 is, for example, 600 to 1000 mm, and the lower portion may be buried in soil. Further, although the heat insulating foundation structure is provided on the concrete foundation laid on the ground, it can also be applied to the cloth foundation.

(2). First Embodiment Next, a specific structure of the adiabatic foundation structure will be described. For example, as shown in FIG. 2, a foundation space 6 is vacant between two heat insulating panels 4 arranged opposite to each other, and concrete is poured into the foundation space 6. Reinforcing bars and anchor bolts for fixing the base are arranged in the base space 6 , but they are omitted in this embodiment. Each heat insulating panel 4 has front and back wide surfaces, and the surface exposed to the base space 6 and bonded to the concrete foundation 3 is designated by 7 as a wide inner surface.

For example, as shown in FIG. 3, in the present embodiment, the bracket 8 having a T-shape in plan view is used for constructing the heat-insulating foundation structure. The bracket 8 is made of resin, and has a rectangular flap 9 that is parallel to the wide inner surface 7 of the heat insulating panel 4, and a support plate 10 that is integrally connected to the left and right intermediate portions of the flap 9 and that is orthogonal to the flap 9 in a plan view. And have. As shown in FIG. 3, the support plate 10 is provided with a window hole 10a for weight saving and material saving (the window hole 10a is not shown in FIG. 5).

The support plate 10 has an exposed portion 11 that protrudes from the wide inner surface 7 toward the base space 6 . Therefore, the T-shaped slit 12 is formed in the heat insulating panel 4, and the laterally facing portion 12 a of the slit 12 into which the support plate 10 is fitted is opened toward the wide inner surface 7. The portion of the bracket 8 excluding the exposed portion 11 is the embedded portion described in the claims.

The bracket 8 is attached to the upper part of the heat insulating panel 4 and the bracket 8 is attached to the lower part thereof. The bracket 8 to be attached to the upper part is inserted into the slit 12 of the heat insulating panel 4 from above. Therefore, as shown in FIG. 3, for example, the upper slit 12 is open upward. On the other hand, as shown in FIG. 5, the lower bracket 8 is inserted into the heat insulating panel 4 from below. Therefore, the lower slit 12 is opened downward.

As shown in FIG. 5, the heat insulation panel 4 is fitted into the ground frame body (ground rail) 13 that opens upward, and the lower bracket 8 is inserted into the slit 13 upwards as much as possible. The exposed portion 12 is placed on the upper edge of the ground frame 13. Therefore, the lower bracket 8 is held so that it cannot move up and down.

As shown in FIG. 2, a large number of slits 12 are formed in the standard flat insulating panel 4c at a certain interval (for example, 200 to 400 mm). On the other hand, the inner corner heat insulating panel 4b is formed with one place on each of the orthogonal side plates. Regarding the outside corner heat insulation panel 4b, in FIG. 2(A), two orthogonal side plates are formed at two places, and in FIG. 2(B), one orthogonal side plate is formed at one place.

For example, as shown in FIG. 4, in this embodiment, an angle-shaped (L-shaped) relay bar 14 having a substrate 14a and a flange portion 14a is used. The relay bar 14 is made of a metal plate such as a steel plate, and is arranged such that the flange portion 14a faces upward and the substrate 14a overlaps the inner corner heat insulating panel 4b of the heat insulating panel 4. Therefore, the flange portion 14 a of the relay bar 14 is in a state of protruding from the inner corner heat insulating panel 4 b of the heat insulating panel 4 toward the base space 6 .

Then, the exposed portion 12 of the bracket 8, the substrate 14a of the bracket 8 is formed a holding groove 15 which fit from above, therefore, the support flange portion 16a of the middle joint bar 14 on the upper surface of the exposed portion 12 Has been done. The support plate 10 of the bracket 8 is formed with a stopper 16 that prevents the relay bar 14 from separating upward. The stopper 16 is formed in an upper and lower longitudinal arm shape having a lower end as a free end by forming an L-shaped steep groove 17 in the support plate 10, and the lower end prevents upward movement of the relay bar 14. The claw portion 16a is formed.

The upper surface of the claw portion 16a is an inclined surface 16b that moves away from the slime groove 27 as it goes from the top to the bottom. Therefore, the insertion of the board 14a of the relay bar 14 is guided. Further, since the stopper 16 has a downward arm shape, the claw portion 16a can be flexibly deformed so as to move to the side of the slime groove 27.

The upper end of the exposed portion 12 and the portion facing the holding groove 15 is cut into a chamfer to form an inclined guide surface 18. Then, as shown in part 7 (A), the lower end of the base plate 14 a of the relay bar 14 contacts the inclined guide surface 18 when the stopper 16 is not bent and deformed. Therefore, since by applying the lower end of the substrate 14a to the inclined guide surface 18, pressing the relay bar 14 at a certain intensity, the stopper 16 is once bent and deformed, the stopper 16 is returned deformation as possible Push the relay bar 14, As a result, the relay bar 14 is held immovable upward.

In the relay bar 14, the outer surface of the connecting portion between the substrate 14a and the flange portion 16a is slightly curved , and there is usually a slight gap between the holding groove 15 and the inner surface substrate 14a. Therefore, if the protrusion size of the claw portion 16a in the flange portion 16a is small, the relay bar 14 may easily escape from the claw portion 16a, and the upward movement blocking function for the relay bar 14 may be weakened. As a matter of course, if the protrusion size of the claw portion 16a is large, it becomes difficult to fit the relay bar 14.

With respect to this point, in the present embodiment, a positioning protrusion 19 that prevents the relay bar 14 from moving toward the exposed portion 12 is provided at the upper end of the exposed portion 11 of the bracket 8, and the positioning protrusion 19 is provided on the positioning protrusion 19. An inclined guide surface 19a for guiding downward movement is formed. The positioning projections 19 prevent the upper end of the relay bar 14 from moving toward the support plate 10. Therefore, the protrusion of the claw portion 14b can be made as small as possible, and the lifting of the relay bar 14 can be accurately prevented. ..

As shown in FIG. 6, the flange portion 16a of the relay bar 14 is provided with a large number of connection holes 20 which are lined up in the longitudinal direction at appropriate intervals. As shown by the alternate long and short dash line in FIGS. 4 and 6, the connection hole 20 can be formed as an elongated hole, or both a round hole and an elongated hole can be used together. Then, the end portion of the joint bar 21 arranged so as to cross the base space 6 is fitted into the connection hole 20. As a result, the heat insulating panels 4 that are arranged to face each other with the basic space 6 interposed therebetween are connected by the group of joint bars 21 via the bracket 8 and the relay bar 14. The arrangement interval of the joint bar 21 can be set arbitrarily.

The joint bar 21 of this embodiment is made of synthetic resin. Then, as shown in FIGS. 7(B) and 7(C), at both ends of the joint bar 21, downward leg portions 22 and 23 that are divided into two in the longitudinal direction of the joint bar 21 are formed. The foot portion 22 located on the outer side is provided with a claw 24 that comes into contact with the flange portion 16a of the relay bar 14 from below. When the foot portions 22 and 23 are pushed into the connection hole 20 of the relay bar 14, the outer foot portion 22 is deformed so as to be closer to the inner foot portion 23 and is then deformed back, so that the claw 24 is deformed. To the lower surface side of the flange portion 16a. As a result, the joint bar 21 is held by the pair of relay bars 14 so as not to come off.

The foot portion of the joint bar 21 may be of a split type or a split type, or may have a rod shape or a tubular shape that is not the split type. However, it is preferable to provide an engaging means such as a claw to prevent coming off. When the connection hole 20 is an elongated hole, it is possible to hold the two feet 22 and 23 in a stable state by forming the two feet 22 and 23 in a quadrangular shape in bottom view.

(3). Summary of First Embodiment In the above-described configuration, as a construction procedure of the heat insulating foundation structure, for example, first, the reinforcing bars and anchor bolts are arranged on the solid foundation, and then the ground frame body 13 Precisely position and secure the flock. Next, the lower bracket 8 is attached to each heat insulating panel 4, and then each bracket 8 is inserted into the ground frame 13 and set. The heat insulating panels 4 that are adjacent to each other in the horizontal direction may be bonded with, for example, an adhesive. As a result, the heat insulating panels 4 arranged in the circumferential direction can be integrated, and the overall strength can be significantly improved.

After setting the inner and outer heat insulating panels 4, a group of relay bars 14 is attached. It is preferable that the relay bar 14 be mounted from the lower part first. Then, the relay bars 14 located in the lower stage and arranged in parallel are connected by the group of joint bars 21 first, and then the relay bars 14 located in the upper stage and arranged in parallel are connected by the group of joint bars 21. Link. Then, pouring fresh concrete, vibrating it with a vibrator to remove air bubbles and finally solidifying.

When placing concrete , the heat insulating panel 4 is pressed outward as indicated by an arrow F1 in FIG. 6(A), and this pressure F1 acts on the flap 9 of the bracket 8 as a pressing force to relay it. The bar 14 acts as a bending force, and each joint bar 21 acts as a tensile force.

Therefore, in order to prevent breakage and deformation of the heat insulation panel 4, it is necessary to secure sufficient resistance to the heat insulation panel 4 at the location of the flap 9, but since the flap 9 has a large area, the bracket 8 By maintaining the space in the left-right direction at a certain size, breakage of the heat insulating panel 4 can be reliably prevented. Further, since the relay bar 14 has an angled shape, it is possible to prevent bending and ensure high strength. Furthermore, since the joint bar 21 has the roots of the legs 22 and 23 connected to the relay bar 14, the legs 22 and 23 are not damaged or deformed, and the distance between the relay bars 14 is constant. Can be held at

Since the relay bar 14 is provided with a large number of connection holes 20, the connection of the joint bar 21 can be adjusted with fine dimensions so as to maintain a necessary interval while avoiding interference with the reinforcing bars. Therefore, the group of joint bars 21 can be arranged in a state in which sufficient strength to withstand the pressure of concrete can be secured. In the present embodiment, the pressure of the concrete directly acts on the substrate 14a of the relay bar 14, so that the pressure acting on the heat insulating panel 4 can be suppressed. Therefore, it can be said that the vertical width of the relay bar 14 is preferably as large as possible.

In the arrangement example shown in FIG. 7D, the relay bar 14 is arranged so as not to straddle the adjacent heat insulation panels 4. On the other hand, in the embodiment shown in FIG. 8A, the relay bar 14 is arranged in a state of straddling the adjacent heat insulating panels 4. Either mode can be adopted, but it can be said that the positioning function of the heat insulating panels 4 is excellent when the heat insulating panels 4 are arranged so as to straddle each other as shown in FIG. 8(A).

In the arrangement example shown in FIG. 8(B), two parallel relay bars 14 are arranged so as to cross the base space 6 in the cross-shaped portion. Therefore, the positioning function of the heat insulation panel 4 is further enhanced. Further, since the relay bar 14 plays the role of a reinforcing bar, it can be said that it contributes to the improvement of the strength of the concrete foundation after construction.

(4). Second Embodiment Next, a second embodiment shown in FIGS. In this embodiment, as shown in FIG. 9, the heat insulating panel includes three kinds of heat insulating panels, an upper heat insulating panel 4e, a middle heat insulating panel 4f, and a lower heat insulating panel 4g. 4g is also lined up horizontally. The middle heat insulation panel 4f displays only one stage, but may have a plurality of stages. Further, although the upper heat insulating panel 4e and the middle heat insulating panel 4f have almost the same height, the lower heat insulating panel 4g has a considerably small height (the height of the wall at the site can be adjusted by the lower heat insulating panel 4g). You can do it by cutting.

10 and 11, the middle heat insulating panel 4f and the lower heat insulating panel 4g are displayed, and in FIG. 11, only the middle heat insulating panel 4f is displayed. First, the middle heat insulating panel 4f will be described. On the upper surface of the middle heat insulation panel 4f, a vertical rib 25 located at the position of the longitudinal centerline thereof and a number of horizontal ribs 26 intersecting with this are formed, and projections are formed at the intersections of both ribs 25, 26. 27 are formed. On the other hand, a vertical groove 28 and a horizontal groove 29 corresponding to the ribs 25 and 26 are formed on the lower surface of the middle heat insulating panel 4f. Although a recess corresponding to the protrusion 27 is formed at the intersection of the vertical groove 28 and the horizontal groove 29, it is not shown.

When the middle heat insulating panel 4f is vertically stacked, the vertical grooves 28, the lateral grooves 29, and the recesses of the upper middle insulating panel 4f are fitted into the ribs 25 and 26 and the protrusions 27 of the lower middle insulating panel 4f. As a result, the upper and lower middle heat insulating panels 4f are positioned so that they cannot be displaced in the horizontal direction. The pitch of the lateral ribs 26 can be set arbitrarily. In this embodiment, the lateral ribs 26 located at both ends are formed close to the side surface of the middle heat insulating panel 4f.

A dovetail groove 30 is formed on one side surface of the middle heat insulating panel 4f over its entire height, and an ant tenon 31 is formed on its other side surface over its entire height. Therefore, the intermediate heat insulating panels 4f that are horizontally adjacent to each other can be connected so as not to separate in the horizontal direction by fitting the dovetail groove 30 and the dovetail tenon 31 from above and below. Although the middle heat insulating panels 4f are arranged horizontally, the dovetail groove 30 is not formed in the middle heat insulating panel 4f located at one end of the row, and the dovetail 31 is formed in the middle heat insulating panel 4f located at the other end of the row. Is not formed. For each stage, it is possible to prepare a dedicated product for the corner portion as in the first embodiment.

As shown in FIG. 9, in the upper heat insulating panel 4e, the upper surface is flat, and the lower surface is provided with vertical grooves 28, horizontal grooves 29, and recesses. On the other hand, in the lower heat insulating panel 4g, the ribs 25 and 26 have protrusions 27 formed on the upper surface and the lower surface is flat. The configuration of the dovetail groove 30 and the dovetail tenon 31 is the same as that of the middle heat insulating panel 4f.

An upper bracket (not shown) is attached to the upper part of the upper heat insulating panel 4e. For this reason, the upper heat insulating panel 4e is formed with an upper end slit 12' having a laterally facing portion 12a. The upper slit 12' has the same size as the slit 12 of the first embodiment, and the bracket 8 of the first embodiment can be used as it is.

The relay bracket 32 is arranged at the joint between the upper heat insulating panel 4e and the middle heat insulating panel 4f and at the joint between the middle heat insulating panel 4f and the lower heat insulating panel 4g. Therefore, the upper slit 33 is formed in the upper part of the middle heat insulating panel 4f and the lower heat insulating panel 4g, and the lower slit 34 is formed in the lower part of the upper heat insulating panel 4e and the middle heat insulating panel 4f, and the upper and lower slits 33 are formed. , 34 are used to mount the relay bracket 32.

Therefore, the lower slit 34 and the upper slit 33, which are vertically adjacent to each other, communicate with each other. The upper and lower slits 33, 34 are basically the same as the slits 12 of the first upper heat insulating panel 4e, and are formed in a T-shape in plan view having a laterally extending portion 35.

On the other hand, the relay bracket 32 has the flap 9 and the support plate 10 that are embedded portions, as in the first embodiment, and the exposed portion 11 is integrally provided on the support plate 10. The configurations of the holding groove 15 and the stopper 16 are the same as in the first embodiment. The difference from the first embodiment is that the flap 9 and the support plate 10 extend upward and downward longer than in the case of the first embodiment, and as shown in FIG. The point is that the substrate 14e is arranged so as to straddle the upper and lower heat insulating panels 4e, 4f, 4g.

Therefore, in the present embodiment, one relay bar 14 is shared by the heat insulating panels 4e, 4f, 4g that are vertically adjacent to each other, but the bracket 8 supports the heat insulating panels 4e, 4f, 4g. Since the area is large, the flap 9 and the support plate 10 are vertically longer than in the first embodiment. In this embodiment, the bracket 8 is also fitted onto the lower heat insulating panel 4g from above. Although the window hole 10a is shown in FIG. 11, it is omitted in FIG. 12(A). As shown in FIG. 12B, the connection hole 20 of the relay bar 14 is formed as an elongated hole. Therefore, as shown in FIG. 12C, the legs 22 and 23 of the joint bar 21 are formed in a quadrangular shape in bottom view as a whole.

In the construction stage, the mounting of the lower insulation panels 4g to Chiwakutai 13, the mounting of the relay bracket 32 to the lower insulating panel 4g, mating the middle the insulating panel 4f to the lower insulating panel 4g, to middle the insulating panel 4f It can be said that the procedure such as mounting the relay bracket 32 and fitting the upper heat insulating panel 4e to the middle heat insulating panel 4f is often adopted.

In this embodiment, the upper and lower insulating panels 4e, 4f, 4g mesh with the ribs 25 , 26 and the grooves 28, 29 in a non-displaceable manner, but straddle the upper and lower insulating panels 4e, 4f, 4g. Since the relay bar 14 is arranged in a closed state, the integrity of the upper and lower heat insulating panels 4e, 4f, 4g is enhanced, and the overall strength can be further improved.

(5). Other usage variations of the first and second embodiments As described above, the anchor bolt for fixing the base is embedded in the foundation of the wooden house, but the third embodiment shown in FIG. 13(A). The form shows an example in which the anchor bolt 36 is supported by using the relay bar 14 (the anchor bolt 36 is the same as the conventional product, and the lower end is bent into a hook shape). ).

That is, the anchor bolt 36 is attached to the support fitting 37, and the support fitting 37 connects the two overlapping plates 38 overlapping the two parallel relay bars 14 and the two overlapping portions 38 at the intermediate portion thereof. The bridge portion 39 has a substantially trapezoidal downward support portion 40 fixed to the lower surface of the bridge portion 39, and the anchor bolt 38 penetrates the downward support portion 30 and the bridge portion 39 to form the bridge portion 40. It is fixed to the upper and lower parts by two nuts 41.

The overlapping hole 38 is formed in the overlapping portion 38, and the tapping screw 43 inserted into the elongated hole 42 is screwed into the connection hole 20 so that the support fitting 37 is fixed to the pair of relay bars 14. Since the mounting hole of the overlapping portion 38 is the elongated hole 42, the support fitting 37 can be arbitrarily displaced in the longitudinal direction of the relay bar 14. Therefore, accurate positioning can be performed. The overlapping portion 38 may be fixed to the relay bar 14 with screws and nuts, but workability is improved by using the tapping screw 43. In addition, the bridge portion 40 is engraved with a score line 44 extending to the longitudinal center line, and by applying a measure to the score line 44, accurate positioning can be performed.

In FIG. 13(B), as a fourth embodiment, an example of the connecting means of the relay bars 14 adjacent in the longitudinal direction is shown. That is, in this example, the connecting plates 45 are overlapped on the adjacent relay bars 14 so as to straddle the connecting plates 45, and the connecting plates 45 and both the relay bars 14 are fixed by the tapping screws 46. In this case, a plurality of round holes 47 are formed in a portion of the connecting plate 45 that overlaps one relay bar 14, and a plurality of elongated holes 48 are formed in a portion that overlaps the other relay bar 14. Therefore, even if the adjacent relay bars 14 are different from each other, they can be firmly connected.

It is also possible to arrange the relay bars 14 adjacent to each other so that their end surfaces are in contact with each other, and set such that both relay bars 14 can be connected by the joint bar 21.

(6). Fifth to Seventh Embodiments Next, other embodiments shown in FIG. 14 and subsequent drawings will be described. First, the fifth to seventh embodiments shown in FIG. 14 will be described. In the fifth embodiment shown in (A) and (B), the connection hole 20 formed in the flange portion 16a of the relay bar 14 is an elongated hole, while the flange of the relay bar 14 is provided at the end of the joint bar 21. A flat portion 40 that overlaps the portion 16a is provided, and the legs 22 and 23 have a shape that is long in the longitudinal direction of the relay bar 14 and are quadrangular in bottom view as a whole. Therefore, the joint bar 21 can slide in the longitudinal direction of the connection hole 20 while maintaining stability. Therefore, it is easy to adjust the position of the joint bar 21.

In the sixth embodiment shown in FIG. 10C, laterally extending branch portions 51 are formed on the exposed portion 12 of the bracket 8 so as to protrude on both sides of the support portion of the relay bar 14, and the branch portion 51 has an upward stopper. An arm 52 is formed, and an engaging claw 42 facing the flap 8 is formed at the upper end of the stopper arm 52. On the other hand, the board 14e of the relay bar 14 is formed with an upward folding piece 53 located on the opposite side of the heat insulating panel 4, and the engaging claw 52 is set to be hooked on the upper end of the folding piece 53.

In this embodiment, the stopper arm 52 having the engaging claws 52a and the folding piece 53 of the relay bar 14 constitute a retaining means for preventing the relay bar 14 from coming off in the upward direction. The bracket 8 is manufactured by a mold (cabinet and core) that moves relative to each other in the vertical direction in the state shown in the drawing.

In the seventh embodiment shown in FIG. 10(D), the bracket 8 is attached to one heat insulating panel 4 in three stages of an upper stage, a middle stage and a lower stage. The middle flange portion 16a is attached by being inserted from above. The upper bracket 8 and the middle bracket 8 may be arranged at the same position in a plan view, but it can be said that they are preferably arranged so as to be displaced in the longitudinal direction of the heat insulating panel 4. By thus connecting the heat insulating panels 4 at three heights, high strength can be ensured even if the heat insulating panels 4 have a height of about 1000 mm, for example.

(7). Eighth to Tenth Embodiments FIG. 15A shows an eighth embodiment. In this embodiment, the relay bar 14 is formed in an angle shape, but the relay bar 14 does not overlap the inner corner heat insulating panel 4f of the bracket 8 and there is a space between the relay bar 14 and the heat insulating panel 4. ing. Therefore, the holding groove 15 is formed at a position that enters the inside of the basic space 6 from the inner corner heat insulating panel 4f of the heat insulating panel 4. Further, the exposed portion 12 of the bracket 8 is formed with an inner plate 54 overlapping the inner corner heat insulating panel 4f of the heat insulating panel 4.

Further, in this embodiment, as the retaining means of the relay bar 14, the upward arm 45 is provided at the tip of the exposed portion 12, and the engaging claw 55a is provided at the upper end of the upward arm 45. Therefore, the engagement claw 55a is hooked on the flange portion 16a. The upward arm 55 is formed by providing the exposed portion 12 with a steep groove 56 having an upward opening. Therefore, the engagement claw 55a can easily move in the direction away from the holding groove 15 by the deformation of the upward arm 55. Therefore, the ease of fitting the relay bar 14 is ensured.

As in this embodiment, the spacing between the relay bar 14 and the heat insulating panel 4, since the relay bar 14 in its entirety is buried in the concrete, the relay bar 14 the role of reinforcing bars in the same way As a result, there is an advantage that the strength of the concrete foundation 3 can be improved.

In the ninth embodiment shown in FIG. 15(B), the relay bar 14 is formed in a vertical flat plate, and the bracket 8 is provided with a large number of upwardly opening connection slots 57 at appropriate intervals. The connection slot 57 has a semicircular shape and has an upper portion as a constricted portion 57a. On the other hand, the joint bar 21 is in the shape of a round bar, and has a pair of sandwiching portions 48 sandwiching the relay bar 14 at both ends thereof, and is elastically fitted into the connection groove hole 56 between both sandwiching portions 58. It forms a boss that fits in. In this embodiment, since the relay bar 14 is a simple flat plate, the wraparound of the concrete becomes good.

The present invention can be embodied in various ways other than the above. For example, the relay bar can be formed in a T shape , and the bracket can be variously changed according to the shape of the relay bar.

The present invention can actually be embodied in an adiabatic foundation structure. Therefore, it can be used industrially.

1 Outer foundation 2 Inner foundation 3 Concrete foundation (vertical foundation)
4 heat insulation panel 4e upper heat insulation panel 4f middle heat insulation panel 4g lower heat insulation panel 6 basic space 7 wide inner surface 8,32 bracket 9 flap which constitutes embedded portion 10 support plate 11 which constitutes embedded portion 11 exposed portion 12, 12', 33, 34 slit 13 Chiwakutai 14 relay bar 14e substrate 14f flange portion 15 holding groove 16 stopper 19 positioning projection 20 connecting hole 21 joint bar 22 foot section

Claims (4)

It has a pair of heat insulating panels that are erected in parallel with the wide inner surfaces that are concrete placing surfaces facing each other, and a connecting device that holds the facing heat insulating panels at a predetermined interval, and between the heat insulating panels. It is a structure where concrete is placed in the foundation space,
The connecting device is attached to the bracket group in a group extending in a horizontal direction and attached to each of the heat insulating panels, and a bracket extending in a horizontal posture along a wide inner surface of each heat insulating panel. an elongated relay bar digits has a group of joint bar for connecting the parallel arranged relayed bars at intervals across the underlying space,
The relay bar has a substrate in a vertical posture overlapping a wide inner surface of the heat insulation panel and a flange portion in a substantially horizontal posture, and a connection hole for connecting the joint bar jumps to the flange portion of the relay bar. While many are empty in
The bracket has an embedded portion that is inserted into the heat insulation panel from above or below, and an exposed portion exposed to the base space, and in the exposed portion, the substrate of the relay bar is the heat insulation panel. An upward holding portion is provided for holding the wide inner surface in an overlapping state, and a holding space into which the board of the relay bar is inserted from above is provided between the wide inner surface of the heat insulating panel and the holding portion of the bracket. Is
Thermal insulation foundation structure for buildings. The bracket is provided with a stopper that holds the relay bar immovably upward, and the stopper is flexibly deformable so that the substrate of the relay bar can be inserted into the holding space.
A heat insulating foundation structure for a building according to claim 1. An engaging claw that is elastically deformed and fits into the connection hole of the relay bar is provided at the end of the joint bar.
A heat insulating foundation structure for a building according to claim 1 or 2 . The heat insulation panel is laminated on the upper part,
The board of the relay bar is set so as to overlap with the wide inner surfaces of the vertically adjacent heat insulation panels, while the embedded portion of the bracket is set so as to fit in the vertically adjacent heat insulation panels. ,
A heat insulating foundation structure for a building according to claim 1 .

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