JPH089896B2 - House roof structure - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a roof structure for a house that can conveniently and firmly bridge ridge trusses and can enhance the rigidity of a roof truss.

[Problems to be Solved by Prior Art and Invention]

2. Description of the Related Art In recent years, a panel construction method has been widely used in which walls, floors, roofs, etc. are constructed using panels. In such a house, the size of each part of the house is determined as an integral multiple of the module, which is a reference size set in the range of about 90 to 100 cm.

On the other hand, depending on the shape of the site where the house is built, the total length in the direction of the wife, which is perpendicular to the ridge direction, is an odd multiple of the module,
For example, there are cases where it is unavoidable to set 7 times or 9 times. Even in such a house, roof beams that connect the roof beams in the girth direction along the perimeter of the outdoor wall of the house in the direction parallel to the ridge are based on the standardized specifications, and are separated by an integral multiple of the module from the outer wall. It is handed over. Therefore, when the length in the gable direction is an odd number, the roof beam does not exist at the position of the central ridge.

Even in such a case, the ridge must be provided in the center between the outer walls because of the aesthetic appearance of the roof.

However, conventionally, such a roof in a house having an odd-numbered length in the end direction has a ridge truss and a truss in the end direction perpendicular to the ridge truss prepared in advance, and these roofs around the outer wall. The roof was formed by straddling the beams. Therefore, the roof beams in the central part, such as the roof beams connecting the roof beams between them at the integral multiple position of the module, are not fully utilized for the formation of the shed, and as a result, each truss needs to have high strength. Therefore, a large-sized member is used for each truss, resulting in increased weight, poor workability, and increased cost.

It is an object of the present invention to provide a roof structure for a house that can form a simple and strong shed structure by utilizing a roof beam of an under-roof structure.

[Means for solving the problem]

The present invention is directed to a girder outer roof beam that is constructed based on a standard multiple of a module and that extends in the ridge direction and along the outer wall of the house and that separates an odd multiple of the module, and an outer wall of the house that connects both ends of the beam. A gable outer roof beam that extends along with the girder outer roof beam, and the girder inner roof beam that connects the girder outer roof beams between the girder outer roof beams at a position close to the center that is an integer multiple of the module, and a girder. Of roof houses using under-roof assembling, which includes an inner roof girder beam closer to the center, which connects the outer girder roof beams between the outer girder beams on one side at an integer multiple of the module close to the center A roof truss having a horizontal lower chord member arranged in the middle of the girder outer roof beam and having its end supported by the gable outer roof beam, and a ridge truss passing through the roof ridge. Only bolt the lower chord to the top A long base portion placed on the inner-direction roof beam near the center, and a lower chord member of a truss in a gable direction which is erected on the upper surface of the base portion and on both sides of the lower chord member and is perpendicular to the ridge truss. In the roof structure of the house, a connecting metal member made of a vertical piece for fixing the base member is fixed by bolting the base portion to the inner roof beam near the center.

[Action]

The size of each part of the house is determined based on the multiple of the module, which is the standard size of the building. In addition, girder outer roof beams extending along the outer wall of the house in the ridge direction parallel to the ridge part separate the modules by an odd multiple. Therefore, the gable outer roof beam connecting the both ends has an odd length multiple of the module. Furthermore, between the girder outer roof beams, the girder inner roof beam near the center that is connected at a position near the center that is an integer multiple of the module from one girder outer roof beam and the girder outer roof beam is outside the one girder direction. A girder inner roof beam near the center, which is an integral multiple of the module away from the roof beam and is located near the center, is bridged.

A ridge truss passing through the ridge is bridged in the ridge direction in the middle of the girder-direction outer roof beams to the under-roof structure. Therefore, as described above, since there is an odd multiple of the module between the girder outer roof beams, there is no roof beam below the ridge truss. According to the present invention, the ridge truss is supported by the connecting fittings bolted to the inner roof beam near the center. This connecting fitting is a long base part bolted to the inner roof beam near the center, and a lower chord member of the truss in the end direction perpendicular to the ridge truss, which is erected on the upper surface of the base part. And a standing piece. By using this connecting metal fitting, the ridge truss can be supported on the gable-direction inner roof beam closer to the center, and the load acting on the ridge truss can be supported by the center-side gable inner roof beam. To pay. As a result, the load acting on the ridge truss can be reduced, the member of the ridge truss can be downsized, and the strength of the roof truss can be improved.

〔Example〕

 An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is an overall layout diagram schematically showing each member of the entire shed assembly, in which each member is usually 90-
It is determined based on the multiple of the module, which is the standard size of the house set in the range of 100 cm. The roof structure of the house of the present invention is adopted when bridging the ridge truss 3 to the under roof set 2, and the ridge truss 3 is connected to the ridge truss 6 perpendicular to the ridge truss 3 by the connecting metal fitting 5. In addition, in this embodiment, the ridge truss 3 is reinforced by using the fired material 4.

The under roof assembly 2 extends in the ridge direction parallel to the ridge A and along the outer wall of the house, and is arranged at an odd multiple of the module, for example, 7 multiples, to the girder outer roof beams 10, 10.
And girder outer roof beams 12, 12 that extend along the outer wall of the house in the girder direction at right angles to the ridge direction and are seven times as long as the module that connects both ends of the girder outer roof beams 10, 10. Under roof assembly 2
Is connected to the girder outer roof beams 12, 12 between the girder outer roof beams 10, 10 and is connected to the girder outer roof beams 12, 12, for example, on the right side in FIG. The girder inner roof beam 14 and the girder outer roof beams 10 and 10 which are connected to the girder outer roof beam 10 at a position close to the center, which is three times as large as the module, and one girder outer roof beam. A position close to the center that separates an integral multiple of the module from 12, in this embodiment, the girder outer roof beam 10 is an even multiple of the module, for example, 10 times, so that the girder outer roof beams 10 and 10 are separated by the center thereof. A girder inner roof beam 16 near the center is provided.

Each roof beam 10, 12, 14, 16 has an I-shaped cross-section with upper and lower horizontal flanges 20, 20 joined by a web 21 as shown in FIGS. 2, 3, 5 and 6. Made of steel,
Further, columns 22 made of square steel pipes are arranged at the respective corners and connecting portions. The roof beams 10, 12, 14, and 16 have the same height and are interrupted by the pillars 22.

The ridge truss 3 is, as described above, a girder outer roof beam 1
It is bridged at an intermediate position between 0 and 10, that is, at the center point in the longitudinal direction of the gable-side outer roof beam 12, and forms a hip roof.

As shown in FIG. 2, the ridge truss 3 includes a long lower chord member 30 made of channel steel with the groove portion facing upward, and a ridge member 31 extending along the ridge portion A. In addition, the ridge truss 3 joins the lower chord member 30 and the ridge member 31 together with the vertical members 32 and 33 that join the center and both ends of the ridge member 31 and the lower chord member 30, and joins both ends of the ridge member 31 and both ends of the lower chord member 30. By diagonally joining the diagonal member 34, the truss member 35A joining the diagonal member 34 and the lower end of the vertical member 33, and the truss members 35B, 35B joining the vertical members 32, 33 and the ridge member 31, a trapezoidal truss is formed. Is forming. In addition, the ridge truss 3 is provided with a joint plate 36 that connects the ends of the lower chord member 30 and the diagonal member 34, and the ridge member 31
On the upper surface of the above, above the vertical members 32, 33, there are provided joint fittings 37 ... Having two rising pieces. Further, the ridge truss 3 is bridged between the gable outer roof beams 12 and 12 by bolting the joint plate 36 to a mounting bracket 25 fixed to the central position of the gable outer roof beams 12. By straddling, a gap g having a height H is formed between the lower chord member 30 and the girder inner roof beam 14 near the center.

Further, the ridge truss 3 has a lower surface of the lower chord member 30 and a vertical member.
Below the 33, a rectangular mounting plate 38 shown in FIGS. 2, 4, and 6 is bolted.

Further, in this embodiment, as described above, the lower chord member of the ridge truss 3
Between the 30 and the girder inward roof beam 14 near the center, the mounting plate 38 is used to bridge the fluttering material 4.

As shown in detail in FIGS. 4 and 6 and a part thereof in FIG. 2, the batted material 4 has a height smaller than the height H of the gap g by the thickness of the mounting plate 38. The channel steel is used. Further, the flint 4 is attached to the lower surface of the mounting plate 38 at one end thereof by using the bolt for bolting the mounting plate 38 to the lower chord member 30 of the ridge truss 3. Further, the batting material 4 includes two pairs of batting materials 4A and 4B extending from the mounting plate 38 in a V shape, and the other end of one batting material 4A is provided on the upper surface of the girder roof beam 14 near the center. It is bolted near the connection end with the gable outer roof beam 12. The other ends of the other fired materials 4B are respectively bolted to the upper surface of the girder-direction inner roof beam 14 near the center and the vicinity of a connection point with the girth-direction inner roof beam 16 near the center. As a result, the batting materials 4A, 4A, 4B, and 4B diagonally connect the lower surface of the lower chord member 30 of the ridge truss 3 and the upper surface of the girder inner roof beam 14 near the center in a zigzag manner.

As a result, the horizontal force acting on the ridge truss 3 can be effectively transmitted to the girder inner roof beams 14 near the center. Therefore, the force acting on the ridge truss 3 is reduced, the member strength is reduced, and the cost is reduced. Also, the rigidity of the small roof can be improved as a whole.

Further, in the present invention, the ridge truss 3 is bolted to the lower chord member 30 by a connecting fitting 5 bolted to the inner roof beam 16 in the girder direction near the center. The lower chord member 61 of the truss 6 in the direction of the wife at the center of the building material 31 is bolted.

As shown in detail in FIGS. 5 and 6 and shown in FIGS. 2 to 4, the connecting fitting 5 is provided on the upper surface of a long base 51 made of an I-shaped steel having the same height H as the base 51. Two pairs of standing pieces 52, 52 extending in the length direction are set up. In this embodiment, the standing piece 52 uses two parallel pieces of a U-shaped metal fitting, and
Reinforcing plates 53, 53 that connect the upper and lower flanges are provided on the center of the plate.

The base portion 51 is bolted with the center of the upper portion of the inner roof beam 16 near the center located below the ridge truss 3. As a result, the lower chord member 30 of the ridge truss 3 abuts on the upper surface of the base portion 51 and is bolted using the through hole provided in the upper flange of the base portion 51.

Also, by bolting the standing pieces 52, 52, the lower chord member 30
Will be erected on both sides, and the lower chord member 61 of the girth direction truss 6 shown in FIG. In the present embodiment, the gable-direction truss 6 includes the lower chord member 61, the side frame member 62 of the roof panel P, a part of which is shown in FIG.
It is composed of a vertical member 63 which connects 61 and an intermediate position thereof, and a truss member 64 which connects the lower end of the vertical member 63 and the upper end of the side frame member 62, and is formed as an assembled truss which is assembled by field construction.

The lower chord member 61 is made of channel steel with the groove portion facing upward, and one end of the lower chord member 61 is inserted between the standing pieces 52, 52 of the connecting fitting 5 and bolted as shown in FIG. Fixed by. The other end of the lower chord member 61 is bolted by a mounting member 26 fixed to the upper surface of the girder outer roof beam 10. Also, one end of the lower chord member 61 is placed on the base portion 51, so that the gap g of the height H is also provided between the lower surface of the lower chord member 61 and the upper surface of the inner roof beam 16 toward the center. Will be separated.

The roof panel P is a panel body in which a field board 66 is attached to the upper surface of a frame structure in which both ends of the side frame members 62, 62 are joined by upper and lower frame members 65. In addition, the roof panels P are rectangular roof panels P1 and P1 arranged on both sides of the roof-side inner roof beam 16 near the center and above them in FIG. 1, and triangular roof panels P2 and P2 on both sides thereof. In addition to that, another triangular roof panel P3 is arranged on the wife side.

The side frame member 62 of the roof panel P is made of channel steel with the groove portion facing inward, and its vertical web 62a is provided on the upper surface of the ridge member 31 of the ridge truss 3 to raise the joining bracket 37. Bolt on each side. At the lower end, the web 62a is bolted to the fitting 26. The lower ends of the vertical member 63 and the truss member 64 are bolted to the lower chord member 61, and the upper ends are between the webs 62a, 62a of the side frame members 62, 62 facing the roof panel P and the web 62.
Bolt to a and 62a. This forms the truss 6 in the gable direction.

In this way, by using the connecting fitting 5, one end of the lower chord member 61 of the ridge truss 3 and the truss 6 in the girth direction perpendicular to the ridge truss 3 are also bolted. As a result, the vertical load acting on the ridge truss 3 is carried by the girder inner roof beam 16 near the center. Further, since the connecting fitting 5 is provided with the base portion 51, the strength of the roof truss is increased and at the same time, the members of the ridge truss 3 and the truss 6 in the end direction are miniaturized, and the strength of the roof truss can be improved. Also, by connecting the lower chord member 61 of the truss 6 in the endwise direction with the connecting metal fitting 5 by bolting,
In addition to improving the workability, the load acting on the truss 6 is also applied to the under roof assembly 2 through the inner-direction roof beam 16 near the center.
Similarly, the strength of the rooftop structure can be improved and the workability can be improved.

At both ends of the ridge member 31, lower chord members 61 of the trusses 6A, 6A extending in a direction perpendicular to the ridge truss 3 are bolted at one end to the mounting plate 38, as shown on the left side of FIGS. It

[Effects of the Invention] As described above, in the roof structure of the house of the present invention, the ridge truss is supported by the connecting metal fittings bolted onto the inner roof beam in the gaze direction near the center, and therefore the load applied by the ridge truss The load acting on the roof truss near the center can be reduced, the load acting on the ridge truss can be reduced, the member of the ridge truss can be downsized, and the strength of the roof truss can be improved. Further, the connecting metal fittings can also support the lower chord member of the truss in the gable direction perpendicular to the ridge truss, thus improving the workability.

[Brief description of drawings]

FIG. 1 is a perspective view schematically showing an embodiment of the present invention, and FIG.
The figure is a front view exemplifying a ridge truss, FIG. 3 is a front view exemplifying a truss in a gable direction, and FIG. 4 is a connecting metal fitting and a hitting material.
FIG. 5 is a partially sectional plan view showing the attachment state of the connecting fitting, FIG. 5 is a partially sectional front view showing the attachment state of the connecting fitting, and FIG. 6 is an exploded perspective view illustrating an essential part of the present invention. 2 …… Under-roof assembly, 3 …… Building truss, 4 …… Striking material, 5 …… Connecting metal fittings, 6 …… Girder truss, 10 …… Girder outer roof beam, 12 …… Girder outer roof beam , 14 …… Inner girder roof beams closer to the center, 16 …… Girder inner roof beams closer to the center, 30 …… Lower chord member, 31 …… Building material, 51 …… Base, 52 …… Stands, 61… … Lower chord material.

Claims (1)

[Claims] 1. A girder outer roof beam that is constructed on the basis of a multiple of a module, which is a standard dimension, extends in the ridge direction and extends along the outer wall of the house, and separates an odd multiple of the module; A gable direction inner roof beam that extends along the outer wall and a girder inner roof beam that connects the gable direction outer roof beam between the girder direction outer roof beams at a position close to the center that is an integer multiple of the module from the one girder direction outer roof beam, A house that forms a rooftop structure using an under-roofing structure including a girder inner roof beam that connects the girder outer roof beams between one of the outer girder roof beams at a position close to the center that is an integer multiple of the module Truss having a horizontal lower chord member arranged in the middle of the girder outer roof beam and having its end supported by a gable outer roof beam, and a ridge member passing through the roof ridge. Bolt the lower chord of above The long base part placed on the inner roof beam near the center, and the lower chord of the truss in the gable direction that is erected on the upper surface of the base and on both sides of the lower chord member and is perpendicular to the ridge truss A roof structure for a house, characterized in that a connecting metal member made of a vertical piece for bolting the material is fixed by bolting the base portion onto the inner roof beam near the center.