JPS6366983B2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a method for replacing the roof of a building, and in particular, when replacing a truss roof with a different type of roof in buildings such as auditoriums and gymnasiums, the existing truss roof is left in place. During assembly, a separate roof that does not require temporary supports is built, and then the existing trusses are moved laterally and dismantled for transport, reducing temporary construction costs and curing costs inside the building, and reducing the period when the building is unusable. to be able to shorten it.

Generally, when replacing the roof of a building, the method used was to first tear down the existing roof and then install a new roof.

However, with this method, for example, in the case of buildings such as school auditoriums and gymnasiums, which are facilities that are currently in use, it is desired that the period during which the building is unusable due to construction will be as short as possible. Moreover, it is often desired that even a portion of the building can be used during the construction period, if possible.

Furthermore, when an existing roof is dismantled, there is a high risk of damage to the building floor due to falling objects, and to prevent this, sufficient curing equipment must be provided.

In addition, measures must be taken against rainfall during the construction period, and measures must be taken to prevent damage to the inside of the building. Conventional roof replacement methods involve such risks.

This invention is particularly intended to solve the problems associated with roof replacement.

The purpose of this invention is to minimize the temporary construction work necessary for construction, and the purpose of this invention is to minimize the curing work inside a building. The aim is to shorten the period during which the building is unusable.

An existing roof 4 is constituted by a truss group 30 in which a plurality of trusses 3 are interconnected, and when replacing this existing roof 4 with another new roof 2,
The existing roof 4 is placed on the support 1 of the existing roof 4.
A new roof 2 is constructed so as to cover the existing roof 4 from above, and then the mutually connected trusses 3 of the existing roof 4 are guided by the supports 1 at both ends of the land beams 5, so that the trusses 3 remain connected. Move it laterally to the specified location,
Here, move the truss 31 near the exit 8 to the other truss 3.
This relates to a method for replacing the roof of a building, which is characterized in that the truss 31 is sequentially separated from the truss 31, and the separated truss 31 is sequentially hung down and carried out of the building.

Embodiments of the invention will be described with reference to the drawings.
The method of this invention includes the following steps: an existing roof and a new roof coexist, and each truss of the existing roof is moved to a fixed location along the support of the existing roof and suspended. It is characterized by the combination of two means.

FIG. 1 shows the positional relationship between a newly installed arched roof 2 and an existing roof truss 3 with respect to a support 1 forming the concrete walls of a building.

That is, the newly constructed arched roof 2 is similar to the existing roof 4.
The building-specific support 1, which is the same as that supported by
is installed on top of. The arch-shaped roof 2 preferably has a roof structure in which steel beams intersect to form a rhombus, as shown in its plan view in FIG. To assemble this roof, a crane truck outside the building is used.
Lift up the beam members corresponding to one side of the diamond one by one and add them to the pre-assembled locations to form the diamond-shaped mesh. Even after the assembly is completed, the assembled parts can stand on their own without erecting any temporary supports, and the arched roof is completed.

Furthermore, in order to install the members and perform subsequent painting, etc., workers can climb onto the existing roof, thereby eliminating the need for scaffolding.

Thereafter, as shown in FIG.
, and a guide roller 7 is attached to the side.

In order to carry the existing roof truss 3 outdoors, a part of the support 1 that constitutes the peripheral wall of the building is bored,
As shown in FIG. 4, the truss outlet 8 is opened in advance. In order to suspend the truss 3, as shown in FIGS. 1 and 4, a portion 10 corresponding to the truss outlet 8 of the support 1 is cut out in advance.

As shown in FIGS. 3 and 4, a pole 11 for hanging the truss is erected in the center of the room corresponding to the truss exit 8. Pole 11 is bifurcated,
About four support ropes 12 are stretched and supported.

The truss group 30 of the existing roof shown in FIG. 4 is moved laterally until the truss 31 closest to the exit 8 among the truss 3 approaches the pole 11. Afterwards, the connecting members 13, horizontal braces 14, and main building 18 of the truss 31, which approached the carrying out port 8 (Fig. 1)
etc., separate the truss 31, and remove the pole 1.
One of the truss 31 is suspended by 1.
At this time, since the support 1 has the above-mentioned notch 10, it can be lowered without any trouble.

The suspended truss 31 is placed on the carts 15 and 16 in a sideways position. Then, one truss is appropriately separated at a dividing position 17 and divided into a plurality of pieces for easy transport. The truss is then moved in the direction of arrow A in FIG. 4 and is carried out from the truss outlet 8.

Next, the truss group 30 is moved laterally, and the above operations are repeated to dismantle and transport all the trusses.

As is clear from the above explanation, the method according to the present invention has the following remarkable effects.

(a) Minimize temporary construction work and curing work inside the building by having the existing roof coexist with the new roof, and by moving each truss of the existing roof to a fixed location, lowering it, and dividing it. was completed.

(b) The period during which the building is out of service is reduced. In some cases, the period of complete disuse may be shortened and a portion of the building may remain in use.

(c) When carrying out work on the new roof, since the existing roof is directly below it, the existing roof can be used as scaffolding if necessary. In addition, there is no feeling of anxiety when working at heights, and work efficiency is improved.

(d) The interior of the building will be protected from rain during the entire construction period, allowing construction to proceed without being affected by weather.

[Brief explanation of drawings]

Figure 1 is a partial vertical sectional view showing the position of the new roof and the existing roof, Figure 2 is a schematic plan view of the steel beams intersecting to form a rhombus, and Figure 3 is an elevation view showing the disassembly of the existing roof. FIG. 4 is a plan view showing the disassembly of the existing roof. In the figure, 1 is a support, 2 is a new roof, 3 is an existing roof truss, 4 is an existing roof, 5 is a land beam, 8 is an exit, 15 and 16 are carts, 30 is a group of trusses, and 31 is an exit It is a close truss.

Claims (1)

[Scope of Claims] 1. An existing roof is constituted by a truss group formed by connecting a plurality of trusses to each other, and when this existing roof is replaced with another new roof, the above-mentioned A new roof is constructed to cover the existing roof from above, and then the mutually connected trusses of the existing roof are guided by the supports at both ends of the land beams, and are placed in a predetermined position while being connected. This method of re-roofing a building is characterized in that the truss is moved laterally, the truss near the exit is successively separated from the other truss, and the separated truss is sequentially lowered and carried out of the building. 2 The truss group is jacked up, both ends of the truss land beam are supported by rollers on the support of the existing roof, and in this state, the truss is guided on the support and moved laterally to a predetermined location while still connected. , where the truss close to the export exit is successively separated from the other truss,
The roof structure of a building according to claim 1, wherein the separated truss is successively suspended from the truss, and then the truss is divided into a plurality of pieces, and each of the divided bodies is placed on a trolley and carried out of the building. How to replace.