JPS5850232A - Construction of concrete beam in building structure - 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]

This invention relates to a method of constructing concrete beams in building structures. In general, a reinforced concrete F building structure 4 where a beam 8 is connected to the top of a column t is shown in Figure llIl. When constructing F, first set the formwork ((2) not shown) and
Concrete is then poured into this formwork.

[Column L and beam Brt are constructed at the same time by pouring. Here, beam 2a - ro
As for M-I, it is supported at one point by one column L, so in addition to the 1-meter column, it is necessary to provide supports at multiple locations along the way to withstand the weight of the formwork and poured concrete. In particular, when trying to construct a large beam with the same size as a JP standard, it is necessary to hold the formwork quite firmly in order to handle a large amount of poured concrete. By the way, when constructing an extremely large frame such as a turbine frame for a single thermal power plant, due to process requirements, the lower floor of the turbine, that is, the bottom of the turbine frame and the condenser etc. equipment [, beam W of turbine mount:
It may be necessary to install it before using it. In such a case, there is a problem in that the formwork for the beam mentioned above cannot be used except for the spaces between the supporting pillars. This invention was made in view of the above-mentioned circumstances, and when constructing the beam of an architectural relic in which a beam frame is passed between the pillars of the pillars, the formwork of the beam is placed in addition to the one pillar that has been constructed to some extent. Support) 1W Note: 1 beam is not required to be installed between the pillars, and the process of building it later (1) is the process of installing equipment under the beam first, and building the beam later. Method of constructing concrete beams in structures. The feature of this invention is that the column e is first constructed, and then the beam formwork is manufactured by a steel plate school to have a predetermined strength.
The frame is passed between one pillar and fixed to the top of both 1lalTt pillars of the beam formwork, and while supporting the beam formwork at 12 points with these two pillars, the beam concrete is poured, and then the beam formwork is poured. Hereinafter, this invention will be explained with reference to the drawings. Figure 1 shows an embodiment of this invention, and shows the upper part of one column 11. To,
Beam formwork connection &1 for installing beam formwork IB described later
8rt is formed, and each pillar is 11t-shaped. In this case, the beam formwork joint 1>18 is a steel plate [wrapped structure]
By attaching a dowel to the inner surface of the iron plate and pouring concrete for the column 11, it becomes integral with the column. In this way, the pillar 11 is constructed up to the lower end position of the beam. On the other hand, the beam form 12 is made of iron plate 14 and reinforcing material 15 as shown in FIG. 3 so as to have a predetermined strength. In this case, the shape of the formwork corresponds to the shape of the beam and has a substantially U-shaped cross section (4I:T). In addition, reinforcement material 1
5 is provided inside the beam formwork 1B. And this beam formwork 1
The frame is passed over the top of the columns 11 (the other one is not shown), and both 1s- of the beam formwork 1B are attached to each column 1.1.
Beam formwork joint ff118c provided at. As for the method of joining, since both are #I411, they may be joined by welding or by bolts using angle members or the like. In this way, the formwork 1m' is supported at one point by one pillar 11, so the beam formwork 1s has enough capacity to withstand its own load as well as the full load when concrete is poured. to have a predetermined strength. Here, the T shown in Fig. 182 is one cross-section of one beam, and in this case, after each # formwork 12 is set, the head e of the column 11 is also constructed at the same time as the beam. frame 18
The two-point chain koji between the two is filled with the T-form frame 16. Then, reinforcing bars (not shown) are set inside the beam formwork ta,
Next, concrete is poured into the beam formwork 12 to construct a beam T-sakaki. When carrying out these operations, since the reinforcing material 15 is provided within the beam frame Is, these reinforcing materials 15t-
It can be used as a scaffold. This is particularly applicable to the construction of beams for very large structures (for example, beams with angles of 3 to 10 mm), and is therefore effective because it can be simplified to a large width during construction. Regarding the assembly of reinforcing bars, the number is as follows:
When the beam formwork is manufactured, it can also be tapered at the same time, reducing the labor required for on-site construction. In this way, after constructing the concrete beam, the beam formwork 138 remains as the -b of the structure. Therefore, at the design stage of a single beam, the strength of the formwork can be incorporated in advance as part of the strength of the beam, making it possible to reduce the size of the beam and thereby reduce the amount of concrete and reinforcing bars.◎ 1. In the above-mentioned embodiments, the beam formwork is made of steel.In addition, concrete or plastic pipes may also be used as the material of the beam formwork. In addition, in the above embodiment, the beam formwork joint 18t1111 was formed with a steel plate on the upper part of the column 11.It is not limited to this. The joint part 18 may be constructed by having a single or III-shaped steel in the part. In this case, it is important to determine whether various types of steel material 17, such as T-shaped #A or H-shaped steel, can be used as shown in the figure. A steel member for joining the formwork 12 can be attached to the upper part of the pillar 11, and by doing so, the formwork 2 can be joined easily and firmly. This support & 1B iron plate wrapped tube column 1
．． This is done not only on the upper part of column 1, but also over the entire length of column 11.
This formwork itself can be used as an island for the column 11, and it can also be incorporated into the one-way design, so that the column 11 can be made of steel-framed reinforced concrete (
Filled square steel pipe concrete construction)&:T can also be used. Furthermore, in the above embodiments, the pillars 11 are rectangular, but they may have a round shape or the like. As explained above, according to the present invention, the columns rt are first constructed, and the frame is passed between the beam formwork eJ columns manufactured to have a predetermined strength, and the frame is passed between both ends of the beam formwork. are fixed on the columns, and the beam formwork is supported at one point by these columns.
Concrete [1 beam formwork itself] is poured and remains as a beam structure, so other than the above-mentioned columns &
: @ It is not necessary to install between these columns that support the formwork, and the process of constructing the beam later, that is, the beam
It is possible to install the equipment under the beam and then construct the beam later. Also, by leaving the formwork as a frame structure Q]-m, the beam strength can be increased,
Therefore, the dimensions of the beam itself can be reduced to 8, and the amount of concrete and reinforcing bars can be reduced to 8.

[Brief explanation of drawings]

1st V: J is a perspective view of an example of a general building structure;
Fig. J is a perspective view showing an example of this invention; Fig. 3 is a T drawing showing details of the beam formwork 12; and Fig. 3 is a deformation of the beam formwork joint 18 provided on the column. An example is shown in a T-diagonal envelope diagram. 11...Column, 1g...Beam formwork, 18.
...Beam formwork joint, 15...Reinforcement material. Applicant Shimizu IL! Setup Co., Ltd. Figure 2 2 乎: /l ``'1 7

Claims (1)

[Claims] When constructing an architectural structure in which a concrete beam is corrugated at the top of one column, a beam formwork joint is formed at least on the upper side surface of the column. The beam form is approximately U-shaped and has a reinforcing material inside and is strong enough to be supported at one point by the two pillars. Construction of a concrete beam in a difficult-to-reach building characterized by joining to the frame joint, then pouring concrete within the beam cover frame, and leaving the beam formwork as a part of the 1111m beam. Law 0