JPH0684652B2 - House roof structure - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a roof structure for a house in which a building truss can be conveniently and firmly bridged to a portion where a roof beam is not present and the rigidity of a shed can be increased. .

[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 gable direction perpendicular to the ridge direction may have to be set to an odd multiple of the module, for example, 7 or 9 times.
Even in such a house, roof beams that connect the girder roof beams along the perimeter of the outdoor wall in the ridge direction parallel to the ridge are located at positions that are an integral multiple of the exterior wall module, based on standardized specifications. 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 surrounding roof beams at the integral multiple position of the module in the direction of the ridge, are not fully utilized for the formation of the roof truss, and as a result, each truss is large. Since strength is required, a large size 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 Problems]

The present invention is constructed on the basis of the multiple of the module which is the standard dimension, extends in the ridge direction and along the outer wall of the house, and divides the odd multiple of the module and connects the girder outer roof beam and its both ends and the outer wall of the house. 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. Roof structure of a house that forms a roof structure by using an under-roofing structure that includes an inner roof girder beam closer to the center that connects an outer roof girder between one gable roof girder at a position close to the center that is an integer multiple of the module And a ridge truss having a horizontal lower chord member arranged at an intermediate position of the girder outer roof beam and having an end supported by a gable outer roof beam, and a ridge member passing through a ridge of the roof. Lower chord material bolted on top Also, a long base part placed on the inner-direction roof beam near the center, and the lower chord of the truss in the end direction perpendicular to the ridge truss and standing on the upper surface of the base part and on both sides of the lower chord member. A connecting metal fitting consisting of a vertical piece for bolting the timber is fixed by bolting the base portion to the roof beam in the girth direction toward the center, and the lower chord member of the ridge truss and the girder toward the center. A house characterized in that the inward roof beam is joined by a diagonally striking material, and at least one of the gable outer roof beams and the central gable inner roof beam are connected by a joint material. The roof structure.

[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 beam closer to the center, which is an integral multiple of the module 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, since the space between the girder outer roof beams is an odd multiple of the module as described above, no roof beam exists below the ridge truss. In the present invention, the horizontal lower chord member of this ridge truss and the girder-direction inner beam near the center are connected by a diagonally extending fire hammer. As a result, the horizontal load that acts on the roof is transmitted to the girder roof beams near the center, including the ridge truss and flint, and the load acting on the ridge truss is applied to the under-roof structure, which acts on the ridge truss. The force can be reduced, the rigidity of the entire roof structure can be improved, and the members of the ridge truss can be downsized, and the cost can be reduced.

Further, the ridge truss is supported by connecting fittings bolted to the inner-direction girders 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 members of the ridge truss can be downsized, and the strength of the roof truss can be improved.

Further, a joint material that connects at least one of the gable-direction outer roof beams and the gable-direction roof beams near the center is bridged over the shed. This reinforces the under roof assembly and improves its rigidity. Accordingly, the load acting on the ridge truss enhances the resistance to the load generated in the roof undergrowth from the girder inward roof beams near the center, and improves the roof truss strength.

〔Example〕

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

FIG. 1 is an overall layout view schematically showing the entire shed assembly by simplifying each member, and each dimension of the house is usually 90 to 10
It is determined based on the multiple of the module which is the standard dimension of the house set in the range of 0 cm. The roof structure of the house of the present invention is adopted when the ridge truss 3 is bridged over the under-roof set 2, and the striking material 4, the connecting metal 5, and the truss 6 in the direction of the wife perpendicular to the ridge truss 3 are used. Under roof set 2
Is reinforced with a splice material 7.

The under-roof group 2 extends in the ridge direction parallel to the ridge A and along the outer wall of the furniture, and is an odd multiple of the module,
For example, girder outer roof beams 10 and 10 that are separated by 7 times,
The girder outer roof beams 10 and 12 extend along the outer wall of the girder roof at right angles to the ridge direction and have girder outer roof girders 12 and 12 which are seven times as long as the module connecting both ends of the girder outer roof girders 10 and 10. Further, the under-roof set 2 extends between the girder-direction outer roof beams 10 and 10 in the ridge direction and is connected to the gable-direction outer roof beams 12 and 12, and one girder-direction outer roof beam 10, for example, In FIG. 1, the girder inner roof beam 14 near the center and the girder roof beams 10 and 10 connected to the right girder outer roof beam 10 at a position close to the center that is three times the module distance from the right girder roof roof beam 10 A position close to the center that separates an integral multiple of the module from the direction outer roof beam 12, in the present embodiment, the girder outer roof beam 10 is an even multiple of the module, for example, 10 times, so that the girder outer roof beam 10, There is a girder inner roof beam 16 near the center that connects 10 at the center.

The roof beams 10, 12, 14, and 16 are shown in Fig. 2, Fig. 3, Fig. 5,
As shown in FIG. 6, the upper and lower horizontal flanges 20, 20 are connected by a web 21 and are made of I-shaped steel having the same cross-section. At each corner and connection part, a column 22 made of a square steel pipe is arranged. .
The roof beams 10, 12, 14, and 16 have the same height,
It is interrupted by the pillars 22 ...

The ridge truss 3 is, as described above, a girder outer roof beam 10,
It is bridged at an intermediate position of 10, that is, a central point in the longitudinal direction of the gable-direction outer roof beam 12 to form 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 to the lower chord member 30 and the ends of the ridge member 31 and both ends of the lower chord member 30. A trapezoidal truss is formed by previously joining the diagonal member 34, the truss member 35A that joins the diagonal member 34 and the lower end of the vertical member 33, and the truss members 35B and 35B that join the vertical members 32 and 33 and the ridge member 31 in advance. is doing. The ridge truss 3 is composed of 30 lower chord members and diagonal members.
A joining plate 36 that joins the ends of 34 is provided, and a joining metal fitting 37 including two rising pieces is provided on the upper surface of the ridge member 31 above the vertical members 32 and 33. 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 crossing over, the lower chord member 30 and the girder inward roof beam near the center
A gap g of height H is formed between the gap 14 and

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

Further, the mounting plate 38 is used between the lower chord member 30 of the ridge truss 3 and the girder inner roof beam 14 near the center to bridge the flint member 3.

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. The flint material 4 is attached to the lower surface of the mounting plate 38 at one end thereof by using the bolts that secure the mounting plate 38 to the lower chord member 30 of the ridge truss 4. Further, the batting material 4 includes two pairs of batting materials 4A and 4B extending from the mounting plate 38 in a C shape, one batting material
The other end of 4A is on the upper surface of the girder roof beam 14 near the center,
It is bolted in the vicinity of the connection end with the gable-direction outer roof beam 12. Further, the other end of each of the other fired materials 4B has the upper surface of the girder inner roof beam 14 closer to the center and the girder inner roof beam 16 closer to the center.
Each is bolted near the connection point with. As a result, the fired materials 4A, 4A, 4B, and 4B obliquely connect the lower surface of the lower chord member 30 of the ridge truss 3 and the upper surface of the girder-direction 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.

In addition, the ridge truss 3 has a roof beam 16 in the direction of the wife, which is closer to the center.
The lower chord member 30 is bolted to the lower chord member 30 by a bolt, and the lower chord member 61 of the truss 6 at right angles to the ridge truss 3 and at the center of the ridge member 31 is also used by the connecting metal member 5.
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. The standing piece 52 is, in this embodiment,
In addition to using two parallel U-shaped metal pieces, the base 51 is provided with reinforcing plates 53, 53 connecting the upper and lower flanges with the center sandwiched.

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.

Further, the standing pieces 52, 52 are erected on both sides of the lower chord member 30 by bolting, and the lower chords of the truss 6 in the gaze direction shown in FIG. Material
Halt 61. In the present embodiment, the gable-direction truss is the lower chord member 61, the side frame member 62 of the roof panel P, a part of which is shown in FIG.
And a truss member 64 that joins 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 that assembles them by on-site 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. Further, the other end of the lower chord member 61 is provided with the girder outer roof beam.
It is bolted by a fitting 26 fixed to the upper surface of 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. And the wife side,
Another triangular roof panel P3 is arranged.

The side frame member 61 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 joint fitting 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 both ends are between the webs 62a, 62a of the side frames 62, 62 of the roof panel P facing each other and the webs 62a, 62a.
Bolt to. As a result, the truss 6 extending in the end direction is assembled.

In this way, by using the connecting metal fitting 5, the ridge truss 3 and the truss 6 in the girth direction perpendicular to the ridge truss 3 are formed.
Also bolt one end of the lower chord member 61. As a result, the vertical load acting on the ridge truss 3 is carried by the girder inner roof beam 16 near the center. In addition, the connecting fitting 5 includes the base portion 51 to enhance the strength of the roof truss, and to increase the strength of the truss 3
It is also useful for downsizing the members of the truss 26 in the gable direction, which in turn can improve the strength of the shed. In addition, the connecting metal fitting 5 also bolts the lower chord member 61 of the truss 6 in the end direction to enhance the workability and also to reduce the load acting on the truss 6.
The roof undercarriage 2 is supported via the inner-direction roof beams 16 close to the center, and 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

Further, in the roof structure of the house of the present invention, the under-roof assembly 2
Is provided with the joint member 7 for connecting the gable-direction outer roof beam 12 and the gable-direction inner roof beam 16 near the center.

As shown in FIGS. 4 and 6, the joint member 7 has a length I that connects the gable direction outer roof beam 12 and the gable direction inner roof beam 16 near the center.
The mounting piece 72 of a joint metal fitting 75 having a mounting piece 72 and a fixing piece 73 bent at a right angle at its outer end is bolted to both ends of a base body 71 made of shaped steel. , The roof beams 12, 16 are bolted to the web.

As a result, the rigidity of the under roof assembly 2 is increased and the ridge truss 3 is
Is coupled to the under-roof set 2 via the fire-flooding material 4 and the connecting fitting 5, thereby dispersing the load acting on the under-roof set 2,
The hut strength is increasing.

The splicing material 7 may be provided on one side or both sides of the inner roof beam 16 in the gaze direction near the center.
By joining the roof beams 12 and 16 at a portion on the far side of the girder roof beam 16 near the center, the rigidity balance of the under roof assembly 2 can be maintained.

〔The invention's effect〕

In this way, the roof structure of the house of the present invention is provided between the ridge truss and the girder inner beam near the center, which is separated from the ridge truss,
The horizontal load acting on the roof can be transmitted to the girder roof beams near the center, including the ridge truss and the blasting material, by connecting the diagonally extending tying material to reduce the acting force on the ridge truss. , It is possible to improve the rigidity of the entire rooftop structure and to reduce the size of the members of the ridge truss, and it is possible to reduce the cost.

Further, the ridge truss is supported by a connecting fitting bolted onto the inner-direction gable-direction inner beam, so that the load acting on the ridge truss is applied to the central-direction gable-direction inner beam, The load acting on the ridge truss can be reduced, the members 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.

Further, a joint material that connects at least one of the gable-direction outer roof beams to the gable-direction roof beam near the center is bridged over the roof structure to reinforce the under-roof structure and improve its rigidity.

[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 …… Wife direction truss, 7 …… Joining material, 10 …… Girder direction outer roof beam, 12… … Wiring direction roof beams, 14 …… Central girder roof beams, 16 …… Central direction gable roof beams, 30 …… Lower chord members, 31… Building materials, 51… Base, 52… Standing Piece, 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 A horizontal lower chord member arranged in the middle position of the girder-direction outer roof beam and having its end supported by a gable-direction outer roof beam,
The lower chord member of a ridge truss having a ridge material that passes through the ridge portion of the roof is bolted on the upper surface, and is mounted on an inner roof beam in the gaze direction toward the center, and an upper surface of the base portion and Connecting metal fittings, which are erected on both sides of the lower chord member and which are bolted to the lower chord member of the truss in the girth direction perpendicular to the ridge truss, have the base on the gable inner roof beam near the center. It is fixed by bolting,
The lower chord member of the ridge truss and the girder inner roof beam closer to the center are joined by diagonally striking fired wood, and at least one of the gable outer roof beams and the girder inner roof beam closer to the center A roof structure of a house characterized by connecting the spaces with joints.