JPH0410549B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a construction method for forming floorboard formwork.

(Prior art) The floorboard construction process can be roughly divided into formwork construction process, reinforcing reinforcement process, and concrete pouring process. Conventionally, in the formwork construction process, it has been difficult to secure a wide working space under the floorboards. It was a challenge. Therefore, the conventional construction method will be explained based on FIG. 6. After assembling the support frame K, scaffolds 15a are successively arranged in every two rows on both the left and right sides of the support frame in the vertical direction.
5, then pipe supports 16 are erected at the upper end of each scaffold of the scaffold belt, and the floorboards are installed on the supports.
A beam 17 is installed between the pipe supports between the scaffolding strips 15 and 15 to receive K ₁ , and the floor frame board is installed on the beam.
It is subject to _K1 . The space between the scaffolding strips 15, 15 becomes a working path R ₁ (portion shown in the dotted drawing). Another conventional example will be explained based on FIG. 7. First, scaffolds 18 are installed facing each other on both the left and right sides of the support frame K.
A stage 19 with frame supports assembled between each scaffold in the vertical direction is installed, a space is left between both sides of the stage and the scaffold, which can be used as a working path R ₂ , and between the adjacent scaffolds, Stages 20 are installed with a space that can be used as a work passage between them, and the floor frame board K ₁ is supported by supports erected on each stage and the scaffold 18.

(Problem to be solved by the invention) According to the former construction method, the work space under the floorboards is
The ratio of the floor area within the span is approximately 56%, so there is room for improvement in terms of space efficiency.Furthermore, the work passages are not connected to each other but are independent, and moreover, they are located in the direction of the arrow in Figure 6. As shown in Figure 2, there is a problem that the work area is narrow because it is limited to two directions, and the number of scaffolds and pipe supports increases, which affects the efficiency of assembly and disassembly work. According to the latter construction method, the passages are connected in four directions as shown by the arrows in Figure 7, making the work easier as the work area becomes wider, but the work passages are narrow and difficult to transport long materials. The former is particularly inconvenient, as the work space is 52% smaller than the former, and there are more shoring components. Therefore, in either construction method, there are still issues to be improved in terms of increasing the working space under the floorboards and reducing the number of supporting components.

(Means for Solving the Problems) In the construction method of the present invention, scaffolds 2 and 2a are first installed facing each other on both sides of the construction position of each pillar. Next, the outer parts of adjacent scaffolds in the column direction perpendicular to the direction in which the scaffolds 2 and 2a face each other are connected by a connecting material 3. Due to this connection, a first working path R is formed between the pair of connecting members 3, 3. During the connection work, in order to secure a second working path Ra that intersects with the first working path R, remove the connecting material that is perpendicular to the part set as the second working path and that is in a position that obstructs traffic. put.
After the connection work using the tie material 3, supports 5 are erected at predetermined intervals along the tie material, and each support is connected to the tie material, and adjacent supports in the direction perpendicular to the tie material are connected. Connect with material 4. Thereafter, the working path R,
Using Ra, lift the large lumber 8 such as channels and I-beams brought in and construct the structure. Then, a horizontal support beam 12 is passed between the large tension members 8 and between the large tension members located across the first working path R, and the floor frame board is placed on this beam.
We receive Ka. When setting up support 5,
Among the supports, the support 5a located on the second working path Ra is not initially installed, but is erected before pouring the slab concrete C to secure the second working path before pouring.

(Example) An example of the present invention will be described below based on the drawings.

First, as shown in Fig. 1A, after constructing the column reinforcement 1, scaffolds 2 and 2a are set up oppositely on both the left and right sides of the column reinforcement. The upper and lower parts of the outer parts of 2a and 2a are connected with a single pipe 3, which is a connecting material. As a result, the first working passage R (portion shown in stippling in the drawing) is created between a pair of single pipes and an adjacent set of single pipes.
is formed. During the joint work, in order to secure a second working passage Ra (Fig. 1B) that is perpendicular to the first working passage R, the lower single pipe in the area that corresponds to the second working passage and is an obstruction to traffic is Remove it.

Next, as shown in Figure 1B, after assembling the column formwork K around the outer periphery of the column reinforcement 1, supports 5 are installed on the outside of each single pipe 3 and along this single pipe at a pitch of 2400 mm on the left and right sides. are arranged in pairs, and each support is connected to the upper and lower two stages of single pipes 3, 3, and the pairs of left and right supports are also connected at their upper and lower two places with single pipes 4, which are connecting materials. support 5
When erecting the 2nd work passageway Ra of the support
The support 5a located above is not placed upright at a predetermined installation position, but is placed upright near one of the supports on both sides closest to this installation position, so as not to obstruct traffic. Make sure it doesn't happen.

Each support 5... is a corner support as shown in FIGS. 2 and 3, and has jack holders 51, 51a attached to both upper and lower ends, and a jack 52 for adjusting the height of the support at the lower end. It is installed. The jack 52 is operable by a handle 53. Furthermore, as shown in Fig. 4, clamps 7 are attached to the upper and lower parts of the support 5 via holders 6, and these clamps grip the single pipe 3 that connects the scaffolds 2 and 2a, thereby allowing each support to stand upright. The state is fixed. As another example of the method of connecting the support 5 to the single pipe 3, as shown in FIG. There is also a method to do this, but this method may also be used.

Clamp 7a is fixed to support 5 by tightening nut 6b.

The left and right pairs of supports are also connected to each other via the single tube 4 by the same method (clamps 7 or 7a).

After installing and fixing the support 5 as shown in Fig. 1c, scaffold boards P and P are laid between the scaffolds 2 and 2 and 2a and 2a, and the crane truck A is used to move over the work paths R and Ra. The channel 8 is moved to a predetermined position, lifted by a crane Aa, and set on the supports 5 lined up along the column direction.

To explain the setting method, as shown in Figs. 2 and 3, the steady angle piece 9 is placed on one side of the jack holder 51 located above the support 5, and the bolt of the clamp 10 is tightened to fix it. After that, place the lower flange of the channel 8 on the other side of the jack holder, temporarily fix the flange on the holder with the clamp 10a, and connect and fix the lower back of the channel to the vertical part of the angle piece with the bolt 11. .

Thereafter, as shown in Fig. 1D, the lifting vehicle _A1 is used to move the horizontal support beam 12 onto the aisles R and Ra to an appropriate position, and then lift the horizontal support beam 12 to the top of the scaffolding board P. It is constructed between channels 8, 8 of adjacent supports 5. The beam 12 is supported by a groove-shaped support frame 81 that is attached in advance to the upper flange of the channel 8, as shown in FIGS.
Both ends of the beam are set inside. Similarly, a beam 12 is also constructed between the channels 8 and 8 on the paired supports 5.

After installing the beam 12, the floor frame board Ka is laid on the beam as shown in FIG. 1E. And the second working passage
Return the support 5a to be installed on Ra to the predetermined position.

and vertical brace 13 as shown in FIG. 1F.
After inserting the top connecting material 14, the floor frame board Ka
Place slab concrete C on top and construct the floorboards.

After curing, the support 5a is removed in order to secure the second working path Ra again, and then the dismantling work begins. During work, a work vehicle will be used to transport the formwork and will be driven along aisles R and Ra.

Whether or not to use a work vehicle during assembly or disassembly depends on the strength of the floorboards, and the choice is arbitrary. When constructing, channel the main material as shown in the diagram.
The weight of the shoring components can be reduced by using truss beams for the horizontal support beams, square pipes for the supports, and single pipes for the connecting materials. Incidentally, assuming that the weight of the first conventional example is 1, the weight of the second conventional example is approximately 1.15, while that of the above example is approximately 0.78. The number of component parts is also approximately 1/2 that of the conventional model. 1 more
As mentioned above, the ratio of the working space (passable floor area) to the floor area of the span is 56 in the first conventional example.
%, while the second conventional example is 52%, the above example has
It rose to 75%. Furthermore, the work can be done safely because scaffolding boards can be installed and a wide range of scaffolding boards can be laid down.

Furthermore, in the above example, the working passage was set in the shape of a cross where the first working passage R and the second working passage Ra intersected.
Depending on the design plan of the passageway, the second work passageway may be shaped like a T, with one side closed, for example, in the process from the delivery entrance to the destination point.

(Effects of the Invention) As explained above, according to the present invention, the work path can be set in any direction and the work space can be made wider than in the conventional example, making assembly and disassembly work efficient and efficient. It can be carried out efficiently, the formwork material can be easily transported within the site, work safety can be ensured, and the number of shoring components can be reduced, allowing the work to be carried out quickly.
Effective for buildings that are subject to heavy loads during on-site work, such as flat slab construction.

[Brief explanation of drawings]

Figures 1 to 1F are diagrams showing the construction process step by step, Figure 2 is a sectional view showing how the channels are installed, Figure 3 is a side view showing how the channels are installed, and Figure 4 is a vertical view of the installation process. FIG. 5 is a sectional view showing the mounting state of another embodiment of the clamp that grips single pipes in the column direction; FIGS. 6 and 7 are respectively conventional It is an explanatory view showing the arrangement state of the shoring of an example. 2, 2a...Scaffolding, 3,4...Tie material, 5,
5a...Support, 8...Large lumber, 12...Horizontal support beam, C...Slab concrete, R...1st
Work passage, Ra...Second work passage.

Claims (1)

[Scope of Claims] 1. First, scaffolds are placed facing each other on both sides of the construction position of each pillar, and then the outer parts of the scaffolds that are adjacent in the column direction perpendicular to the facing direction of the scaffolds are connected with a connecting material, and the pairs are connected. A first working passage is formed between one set of binding materials and an adjacent binding material, and among these binding materials,
Remove the tie material that is perpendicular to the part set for the second work route that connects to the first work route and that is in a position that obstructs traffic.After the tie work with the tie material is completed, support should be placed along this tie material. Each support is erected at a predetermined interval, and each support is connected to the above-mentioned connecting material, and adjacent supports are connected in a direction perpendicular to this connecting material with a connecting material. After erection, a horizontal support beam is passed between the supports and between large timbers located opposite to each other across the first working passage, and the floor frame board is received on this beam, and the above support is erected. A method for constructing floorboards, characterized in that, when installing, among the supports, the supports located on the second working path are not initially installed, but are erected at predetermined positions before slab concrete is poured.