JPH0449328Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial field of application This invention relates to an extension structure for extending a one-story building to two stories.

BACKGROUND TECHNOLOGY When extending a one-story building to a two-story building, it is common to build a second-story part on top of an existing building and support this added part by the existing building.

However, in such buildings, the structure of the existing building is not strong enough to support the extension, which requires major structural changes to the existing building and increases the cost of the extension. Since it is bulky and requires extensive demolition of the existing building, it has the disadvantage that it is not possible to carry out extension work while maintaining the lives of residents. Therefore, it has been considered to construct a heavy steel frame independent of the existing building and construct a two-story building on this frame (Japanese Patent Laid-Open Publication No. 52-9936).

Problems that the invention aims to solve As mentioned above, by supporting the extension part through a frame that is completely independent of the existing building, the extension work can be carried out on the existing building with as simple as removing the roof. This has the advantage of making construction easier. However, in the past, the exterior wall of the extension and the exterior wall of the existing building were not connected in a continuous manner, resulting in an appearance that looked like an extension, which impaired the exterior appearance.

This invention aims to eliminate such conventional drawbacks.

Means to Solve the Problems In order to achieve these objectives, this idea involves constructing a steel frame made of columns and beams to surround the existing building, and constructing an extension independently on this frame. In a building that has been installed, the lower end of the exterior panel attached to the beam via the mounting bracket is suspended downward, and a soffit is installed on the underside of the soffit installed between the lower end and the exterior wall of the existing building. It is characterized in that the outer wall of the extension part and the outer wall of the existing building are connected by pasting boards.

Embodiment Hereinafter, the configuration of this invention will be explained based on the illustrated embodiment. In FIG. 1, 1 is an existing one-story building, and a steel frame 2 is constructed so as to straddle this existing building 1. An extension section 3 is constructed on this steel frame frame 2. In this case, as shown in FIG. 2, the steel frame frame 2 consists of an independent column 4 that is independent of the existing building 1, and a beam 5 that extends over the independent column 4. A foundation 6 is constructed separately from the foundation 7 of the existing building 1, and the pedestal is constructed on this foundation 7. In addition, when constructing this steel frame frame 2, the roof of the existing building 1 will be demolished, but other parts will remain almost as they were, so residents will be able to maintain their current lives as they are. can.

3 and 4 show the overall structure of the steel frame frame 2. As shown in FIG. In this way, the four independent columns 4, 4, . . . erected on the foundation 6 are installed so as to straddle the existing building 1. Also, 8,8
is an independent column for expansion to expand the first floor without supporting the extension, and these independent columns 8, 8
is installed on a foundation 6 that extends in the expansion direction beyond the second floor supporting independent columns 4, 4 and is also constructed independently of the existing building. Joining members 9, 9... are fixed to the upper ends of the independent columns 4, 4... for supporting the second floor, and the X
Ramen beams 10, 10 are installed in the Y direction.
In the direction, the transverse beams 11, 11 are joined and spanned. Further, a middle beam 12 in the parallel direction to the horizontal beam 11 is connected to and passed between the intermediate parts of the rigid frame beams 10, 10, and further, an intermediate part between the middle beam 12 and the horizontal beams 11, 11 is provided. A beam connecting material 13 is joined and passed between them. In addition, a beam 14 is also connected and passed between the independent columns 8, 8 of the expanded portion, and a roofing beam is provided between the independent columns 8, 8 and the independent columns 4, 4 for supporting the second floor. 15 is passed diagonally. Furthermore, another roofing beam 16 is passed between the rigid frame beam 10 and the beam 14 of the expansion section, and these roofing beams 15, 15, 16
At the tips of the eave beams 17, 17, 17 protrude.

In FIG. 4, rigid frame beams 10, 1 in the X direction
0 is rigidly connected to the independent columns 4, 4, and on the other hand, the horizontal beams 11, 11 in the Y direction are all pin connected, and the horizontal force in the Y direction is affected by expansion. Between the independent column 8 of the section and the independent column 4 for supporting the second floor, the horizontal line passed between these independent columns 8, 4 and the upper end of the independent column 8 of the extension section and the independent column 4 for supporting the second floor. In the space surrounded by the beam 18,
The load-bearing wall 41 has a structure in which an X-shaped brace 19 is provided for support. Above, each beam 10,1
1, etc. are all lightweight steel sections made of H-beam steel or the like, and are therefore lighter and much more workable than when heavy steel frames are used. .

In addition, at the upper end of the independent pillars 4, 4 for supporting the second floor, rigid frame beams 10, 10 and horizontal beams 11, 1
1. Furthermore, braces 20, 20... arranged in an X shape are attached to the horizontal space surrounded by the middle beam 12 and the beam connecting material 13, and Two ramen beams 10
And braces 20 arranged in an X shape also in the space surrounded by each roof lowering beam 15, 15, 16,
20... are provided.

FIG. 5 shows a joint structure between the rigid frame beam 10 and the independent column 4. A connecting beam 21 made of H-shaped steel protrudes from the connecting member 9 at the upper end of the independent column 4. Joint plates 24, 25, 26 are attached between the ends of the rigid frame beam 10 made of H-shaped steel like the joint beam 21 so as to straddle each flange 22 and web 23. are fixed to the joint beam 21 and the rigid frame beam 10 with bolts, respectively, and are rigidly jointed.

FIG. 6 shows a joint structure between a horizontal beam 11 and an independent column 4, in which a T-shaped joint plate 27 is provided protruding from the end of the horizontal beam 11, and this joint plate 27 is connected with bolts. It is fixed to the joint member 9 at the upper end of the independent column 4 by means of a pin joint structure.

On the steel frame frame 2 constructed as described above, as shown in FIG. 7, an extension part 3 for the second floor consisting of a framework 28 and an external wall panel 29 attached to the outside of the framework 28 is constructed. . 30 is an exterior wall panel of an existing building, 31 is a frame of the existing building, and 32 is a beam of the existing building installed on the frame 31.
As can be seen from this figure, the beam 32 of the existing building and the beam 10 of the second floor construction section are not connected to each other at all, and there is a gap between them. An exterior panel 33 is attached to the outside of the rigid-frame beam 10 via attachment fittings 32 below the second floor extension 3 constructed in this way. This exterior panel 33
A field edge 34 is extended across the lower end of the roof and the upper end of the exterior panel 30 of the existing building 1, and an eave soffit board 35 is pasted to the lower surface of this field edge 34, whereby,
The exterior part on the second floor and the exterior part on the first floor are exterior panel 3.
3 and an exterior member consisting of an eave soffit board 35. In the figure, 36 is a draining plate that covers the gap between the outer wall panel 29 and the exterior panel 33 in the extension part 3. Further, as shown in FIG. 8, a lower roof 37 is attached to the upper surface of the lower roof beam 15, and the outer wall of this expanded portion is connected to the outer wall of the existing building 1 so as to be continuous with the outer wall of the existing building 1. .

Figure 8 shows the state of the completed extension.As shown in this figure, some of the independent columns 4 are exposed to the outside, but all other parts are not exposed to the outside, and the existing building Although it is a completely independent structure, it has an outstanding appearance as if it were built as one. In addition, numeral 38 in the figure indicates a balcony projecting outward from the extension part 3. Of course, as shown in FIG. 8, the roof truss 40 (FIG. 1) is attached to the second floor extension 3, and the roof material 39 is attached on the roof truss.

Effects of the invention As described above, in this invention, the lower end of the exterior material attached to the beam of the pedestal of the extension part built on the pedestal is suspended, and a field edge is provided between the lower end and the outer wall of the existing building. Since the soffit board is attached to the soffit board, the exterior wall of the extension and the exterior wall of the existing building are connected via the exterior material and the soffit board, and even though the structure uses such a steel frame frame, it has an excellent appearance. This has the effect of allowing you to obtain additional buildings.

In addition, as shown in the embodiment of this invention, the frame 2
If the beams 10, 11, etc. of This eliminates the need for large machinery, making it possible to carry out construction work even on sites where clay trucks cannot enter. Furthermore, since the steel frame frame 2 can be manufactured by improving the structure, it can be of high quality and have a structure with extremely little risk of leakage.

[Brief explanation of the drawing]

Fig. 1 is an overall schematic side view showing an embodiment of the present invention, Fig. 2 is a schematic plan view showing the arrangement positions of independent columns, Fig. 3 is an overall side view of the steel frame frame, and Fig. 4 is a perspective view as well. Figure 5 is an exploded perspective view of the main parts showing the joint structure of rigid frame beams, Figure 6 is an exploded perspective view of the main parts showing the joint structure of horizontal beams, and Figure 7 is the main parts showing the mounting structure of the exterior member. FIG. 8 is an overall front view showing the state after construction is completed. 1...Existing building, 2...Steel frame frame, 3...Additional part, 10...Ramen beam, 11...Horizontal beam, 3
2...Supporting metal fittings, 33...Exterior panel, 34...
Verge, 35... Soffit board, 41... Load-bearing wall.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. In a building in which a steel frame consisting of columns and beams is constructed to surround an existing building, and an extension is constructed independently on this frame, an extension part is constructed independently on the frame, and the construction is made by attaching the beam to the beam via a mounting bracket. The lower end of the exterior panel installed in A building extension structure characterized by connecting the outer walls of a building. 2. The building extension structure according to claim 1, in which the steel frame frame is made of lightweight section steel, and has a pin structure with a rigid frame in the X direction and a load-bearing wall in the Y direction.