JPS62111050A - Construction of slab - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method of constructing a slab, and particularly to a method of constructing a slab suitable for use in forming a long span slab.

``Prior Art'' Generally, when constructing a slab, for example, a formwork is assembled on a preceding frame having an opening at the top, covering the opening, and reinforcing bars, deck plates, etc. are assembled within the formwork. A method using so-called RC structure, in which concrete is poured, is adopted.

[Problems to be Solved by the Invention] The present invention aims to solve the following problems in the conventional technology mentioned above.

In other words, the aforementioned MI! The problem with the construction method is that there is a limit to the strength of the RC structure itself, which limits the ability to increase the span of the opening in the preceding frame, that is, to increase the size of the slab. Such a problem is one of the obstacles to shortening the construction period because it necessitates subdividing the slab.

On the other hand, as a means to solve such problems, a temporary steel frame is hung over the opening of the preceding integral part, and the formwork is placed on the temporary steel frame to increase the strength of the slab. It is being considered to increase the height and increase the size.

However, even with this method, a large number of temporary steel frames must be installed due to the longer span of the opening in the preceding structure, and it is also difficult to install temporary steel frames along with the RC structure due to the design. However, since these negotiations become complicated, 1q is not an effective solution.

Furthermore, with the construction method mentioned above, after constructing the slab, incidental work above and below the slab (especially incidental work within the preceding structure), such as piping work, duct work, or installation work of various equipment, is carried out. etc. must be done separately, so even if the slab is made larger, it will only take 1 minute! ! The problem remains that it will not lead to a significant reduction in 1.

[Means for Solving the Problems] The present invention effectively solves the above-mentioned conventional problems and achieves 1q.
This method provides a method for constructing a slab, in which a plurality of steel beams and reinforcing bars are framed, a deck plate is attached over these to form a slab structure, and the upper part of the slab structure is Alternatively, a floor assembly module is formed by removing various equipment such as piping from the lower part, and the floor assembly module is lifted and placed on the upper part of the preceding structure to close the opening, and then the floor assembly module is removed. It is characterized by covering it and pouring concrete.

"Function" The present invention has the above-mentioned configuration, so that the slab can be
As an RC structure, its rigidity is increased and it can be made larger.
In addition, it minimizes the amount of work that must be done on-site after the slab is constructed, and allows concrete work for the slab to be carried out simultaneously with work inside the preceding structure.

"Embodiment" The present invention will be described in detail below based on a preferred embodiment shown in FIGS. 1 to 4.

First, as shown in Fig. 1, a plurality of steel beams 1 and reinforcing bars 2 are framed almost in a lattice shape, and then the spaces formed between them are covered with deck plates 3 made of corrugated steel plates to form a slab. A structure 4 is formed.

Next, as shown in FIG. 2, after the slab structure 4 is lifted by a crane C or the like, pipes 5 and other equipment (for example, ducts and lighting equipment) are inserted through the upper and lower parts or the upper and lower parts of the slab structure 4. (all of which are not shown) are integrally attached via supports 6 and hangers (not shown) to form a floor assembly module 7.

The floor assembly module 7 thus formed is transported above the preceding body 8 which has been formed in advance and has an opening 8a in the upper part, and the floor assembly module 7 is aligned with the opening 8a of the preceding body 8. and insert the piping 5 etc. attached to the lower part of the slab structure into the preceding structure 8, and as shown in FIG. Place it on the periphery.

Next, crane C is lifting the floor assembly module 7.
After removing the floor assembly module 7, the floor assembly module 7 is integrated with the preceding frame 8 by pouring concrete 9 to cover the floor assembly module 7 as shown in FIG.

Thereafter, finishing work is carried out on the upper and lower parts of the floor assembly module 7 to complete the construction of the slab.

However, when constructing a slab using such a method, the main strength members of the slab are composed of the yN trabecular beams 1 and the reinforcing bars 2, so the strength can be sufficiently increased to apply it to the large-span preceding frame 8. The range can be expanded significantly. On the other hand, if various equipment such as piping 5 is installed in the slab structure 4 in advance, and if the floor assembly module 7 is installed in the preceding frame 8, it is necessary to place concrete on the upper part of ε. Since the work and various works in the preceding frame 8 can be carried out simultaneously, the construction period can be significantly shortened.

Note that the steps shown in the above embodiments are just one example, and other steps may be added. Further, the shapes and dimensions of each component are merely examples, and can be changed in various ways based on design requirements and the like.

"Effects of the Invention J As explained above, according to the method for constructing a slab according to the present invention, since the slab structure, which is the main strength-decay member of the slab to be constructed, is composed of steel beams and reinforcing bars,
By increasing its rigidity, it is possible to greatly expand the scope of application to larger spans of preceding structures. Furthermore, after a floor assembly module formed by attaching piping and other equipment to the slab structure is placed on the preceding frame, concrete is poured to cover the floor assembly module to construct a slab. Therefore, the concrete pouring work and the various works inside the preceding structure can proceed at the same time, thereby producing an isothermal effect that can significantly shorten the construction period for slab construction.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIG. 1 is a longitudinal cross-sectional view showing a state in which a slab structure is formed, FIG. 2 is a longitudinal cross-sectional view showing a state in which a floor assembly module is formed, and FIG. is a longitudinal sectional view showing the floor assembly module placed on the leading side body;
FIG. 4 is a longitudinal cross-sectional view showing a state in which concrete has been poured to cover the floor assembly module. 1... Steel beam, 2... Rebar, 3... Deck plate, 4... Slab structure 5... Piping, 6.・・・
...Support, 7...Floor assembly module, 8
・・・・・・Advanced frame, 8a・・・Opening,
9... Concrete.

Claims (1)

[Claims] 1) A method for constructing a slab provided to cover the upper opening of a preceding building frame, in which a plurality of steel beams and reinforcing bars are framed, and then a deck plate is attached to cover these to construct the slab. A floor assembly module was formed by attaching piping and other equipment to the upper or lower part of the slab structure, and the floor assembly module was lifted and placed on top of the preceding framework to close the opening. A method for constructing a slab, the method comprising subsequently pouring concrete to cover the floor assembly module. 2) The method of constructing a slab according to claim 1, wherein the various equipment such as the piping are provided vertically penetrating the slab structure.