JP2743102B2 - Push-up construction method for large span frames - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a push-up construction method for constructing a large span roof frame such as a gymnasium.

[Conventional technology]

Conventionally, to construct a large span frame by pushing up, as shown in FIG. 5, after assembling the large roof 5 on the ground 6,
By operating a number of jack-up devices 8 simultaneously on the pillars 7 supporting the roof 5, a method of pushing up to a height at the time of completion as shown in FIG.

[Problems to be solved by the invention]

Since the conventional push-up method pushes the column to a high place, it is dangerous to tilt the jack-up device unless the push-up amount of each jack-up device is completely matched until the column is fixed at a predetermined height, and the roof is also damaged. There is a problem that it is not possible to simultaneously construct a wall below the roof when pushing up the roof.

The present invention solves these problems and provides a construction method that is safe even when working at heights, and that when the roof reaches a predetermined height, the wall portion of the building is almost completed. The task is to do so.

[Means for solving the problem]

In order to solve the above-mentioned problems, the present invention provides a first step in which a roof is laid, a jack is provided for each of a plurality of sections into which a wall frame is divided, and these jacks are attached to the roof, The second step of constructing a wall structure that is extended and raising the roof and dividing the space below the jack that has not been extended, and extending the jack by one stroke using the constructed wall structure as a reaction force support to raise the roof The third step in which the jack extended in the previous step is contracted to the original state in which it was not extended, and a wall frame divided in the space below the third step is constructed, and until the roof reaches a predetermined height. The fourth step of repeating the third step is to push up and construct a large span frame.

〔Example〕

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

As shown in FIG. 1, after assembling a large span roof 1 on the ground 2, the length of a wall frame supporting the roof 1 is divided into a number of sections.
A, B, C, D,... Are divided, and the jacks 3 provided for each of the sections A, B, C, D,... Are attached to the lower part of the roof 1 (referred to as a first step). as such, every other jacks 3 _a, 3 _C ... (i.e., the entire half of the jack) was extended 1 stroke raising the roof 1, did not extended jack 3 _B, 3 _D ... of Jacks above the divisions B, D…
Since there is a space for one stroke between the lower part of 3 _B , 3 _D …, the wall frame 4 _B , 4 _D divided to fill this space
Are constructed (referred to as a second step). Next, as shown in FIG. 3, increase the jack 3 _B, 3 roof 1 _D ... was one stroke extended in the constructed Kabemukurotai 4 _B, 4 _D ... The thereon as a reaction force support is allowed, the deflated prior to the jack 3 _a was extended with process, 3 _C ... to the original state did not extend the its jack 3 _a, 3 _C ... it belongs sections a, C ... upper and jack 3 _a , 3 _C … are constructed into a space formed below and below the walls 4 _A , 4 _C … (referred to as a third step). Subsequently, similarly to the third step, the step of jack-extending the previously constructed wall frame as a reaction force support and repeating the step of building the wall frame in the adjacent section is repeated until the roof 1 reaches a predetermined height ( The fourth step). The fourth finally all of the jacks, as shown in FIG. _{3 A, 3 B, 3 C} , 3 and _D ... to killing buried in Kabemukurotai 4 completes the construction of large-span Frames.

〔The invention's effect〕

According to the present invention, since the jack push-up amount is as short as one stroke and the adjacent jacks are supported on the wall frame, even if there is a slight error in the push-up amount of each jack, the roof may fall down due to inclination. The jack is easy to operate, and has high stability against external forces such as wind and earthquake.
In addition, since the construction of the wall frame is almost completed when the roof has been pushed up, the wall frame can be efficiently executed compared to the case where the wall frame is constructed later.

[Brief description of the drawings]

FIG. 1 to FIG. 4 show an embodiment of the present invention, and FIG. 5 and FIG. 6 show prior art examples, each of which is partially cut away. 1… Roof, 3… Jack, 4… Wall skeleton, A, B, C, D
…… Sections.

Claims (1)

(57) [Claims] 1. A first step in which after the roof (1) is laid, jacks (3) are provided for each of the divided sections of the wall frame and attached to the roof (1), and every other jack is provided. (3) Extending the stroke (1) by one stroke to raise the roof (1), and constructing a wall frame (4) divided into a space below the jack (3) that has not been extended, and the constructed wall frame One jack (3) as the reaction force support of (4)
The roof (1) is raised by the stroke extension, and the jack (3) extended in the previous process is contracted to the original state where it was not extended, and the wall frame (4) divided into the space below is constructed. And a fourth step of repeating the third step until the roof (1) reaches a predetermined height.