JPS5923135Y2 - wall beam structure - Google Patents

Description

[Detailed description of the invention] This invention is mainly concerned with the structure of reinforced concrete wall beams (wall-like beam members with an elongated rectangular cross section) used in mid-to-high-rise buildings, and it simplifies on-site construction, improves construction accuracy, and reduces construction costs. The purpose is to reduce

In conventional reinforced concrete beam structures, reinforcement is generally composed of axial main reinforcement and stirrup as shear reinforcement.

Reinforcement work, such as placing stirrups surrounding the main reinforcement, is time-consuming and inefficient, especially when the beam height is high, such as in wall beams.

Construction methods using prefabricated panels have also been adopted, but this may not always be economical or rational depending on the design conditions, and there was a need for a structure that is easier to construct and has better economic efficiency and strength.

The wall beam structure of this invention was devised in view of the above-mentioned circumstances, and will be explained below based on the illustrated embodiments.

In the figure, reference numeral 1 denotes a reinforcing bar grid formed by assembling vertical bars 2 and horizontal bars 3 in a mesh shape, and is manufactured by welding or joining using binding wires.

Reinforcement for the wall beams is carried out on site by arranging two of the above-mentioned reinforcing bar grids 1 facing each other, and connecting the upper and lower ends of the opposing reinforcing bar grids 1 with U-shaped connecting bars 4.

Therefore, in this configuration, the horizontal reinforcements 3 of the reinforcing bar grid 1 function as main reinforcements in a normal reinforced concrete wall beam or reinforced concrete 1-beam, and the vertical reinforcements 2 function as stirrups for shear reinforcement.

The size of the mesh of the reinforcing bar grid 1 is determined according to the cross-sectional shape, span, etc. of the wall beam design, but the transverse bars 3 serve as the main bars as mentioned above, and are subject to large bending and tensile stress. Ensure close spacing at the edges, i.e. top and bottom.

Also, depending on the design, the spacing between the vertical reinforcements 2 can be changed to provide a rational reinforcement arrangement.

The embodiments shown in FIGS. 4 and 5 are examples in which the connecting bars 4 are also arranged in a mesh shape by combining a plurality of connecting bars 4 and transverse bars 3'. It can be attached as one piece, and since the transverse reinforcements 3' are located at the upper and lower ends of the wall beam, efficient cross-sectional design is possible.

Because we use a reinforcing bar lattice in which the transverse bars are closely spaced at both ends, we are using multiple closely spaced main bars at the ends, where conventional on-site reinforcement would have required large-diameter main bars for wall beams. By using a group of small-diameter reinforcing bars, edge stress can be dealt with efficiently and evenly.

That is, since a reinforcing bar grid is used, it is easy to arrange the transverse bars very densely, and a large number of reinforcing bars can be arranged with high precision, increasing the degree of freedom in design of reinforcing bars.

In addition, the overall reinforcement work is streamlined and labor-saving by using wall-type reinforcement using a pre-fabricated reinforcing bar lattice with vertical and horizontal reinforcement, compared to the conventional reinforcement arrangement of main reinforcement + stirrup. made possible.

[Brief explanation of the drawing]

The drawings show an embodiment of this invention. Figure 1 is a cross-sectional view showing the attachment of connecting bars to a reinforcing bar grid, Figure 2 is a cross-sectional view of a wall beam, Figure 3 is a front view, and Figure 4 is a cross-sectional view of a wall beam. and FIG. 5 is a cross-sectional view of a case where a plurality of connecting bars and transverse bars are integrated. 1...Reinforcement grid, 2...Vertical bars, 3,3
′...Horizontal reinforcement, 4...Connection reinforcement, 5.Curved mesh connection reinforcement, 6.Curved concrete.

Claims (1)

[Scope of utility model registration request] Two reinforcing bar grids are arranged facing each other, consisting of vertical bars and horizontal bars, and the spacing between the horizontal bars is dense at the upper and lower ends and coarser in the middle. A wall-beam structure characterized in that the concrete is poured by connecting them with connecting reinforcements.