JPS61113947A - Reinforcement arrangement of reingorced concrete pillar - 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] [Purpose of the invention] 1 Industrial application field The present invention relates to a reinforcement method for reinforced concrete columns.

ll Conventional technology The development of ultra-high 11Rc products is actively progressing in various fields with the aim of reducing the cost of the building blocks. This super high school 11c
In the purchasing cost design of a building, the key point is how to ensure the strength of the columns under high axial force and high shear force, and in order to do so, it is necessary to restrain the core concrete in the area surrounded by the main reinforcing bars. In particular, it is considered best to restrain all the main reinforcements with hoops, etc. For reinforced concrete columns with a rectangular cross section, the main reinforcements are arranged in a rectangular manner along the column periphery, as shown in Fig. 9. Attempts have been made to surround ・12... with square hoops 3, etc., and to further restrain intermediate main reinforcements 2... other than the main reinforcements at the four corners with another core hoop (reinforcement 5) 14... In Figure 6, number 5 is poured concrete. However, in this case, if there are a large number of main reinforcements, it becomes impossible to restrain all the intermediate main reinforcements inside, and there is still a problem in terms of ensuring toughness. In addition, all reinforcing bars must be constructed on-site, resulting in significantly poor workability.

m Point B8 to be solved by the invention The present invention takes these matters into consideration, and in a reinforced concrete column, a lightning reinforcement is attached to the main reinforcement, the main reinforcement is fixed inside the core concrete surrounded by a hoop, and the core The aim is to enhance the restraining effect of concrete and increase the toughness of columns, and also to introduce factory production to improve workability on site.

0 shots (borrowed from 111) 1 Measures to solve the problem: Unexploded flf1 is to surround the multi-grain main reinforcement with a hoop, etc., and join it along the main reinforcement along with a lightning rod to fix it inside the core concrete. Because of the above structure, the three main reinforcing bars are restrained by the hoops and the like, and the core concrete is effectively restrained.

111 Example/ Figures 1 and 2 are the first example, in which Figure 1 is a cross-sectional plan view of a rectangular reinforced concrete column, and Figures 2A and B are
are a perspective view and a cross-sectional plan view of the lightning muscle.

In the figure, 1..., 2... are the four corner main reinforcements and multiple intermediate main reinforcements arranged in a rectangular manner around the column, 3. is the square hoop surrounding these main reinforcements, and 5 is the pouring. concrete,
6... is lightning shape test (waveform) I j, m
m m a□-11172-1, m o. O1. - a straight line connected by gas welding or mechanical bonding, which is embedded in a core concrete 5' surrounded by square hoops of poured concrete 5;

iv Example 2 Figures 3 and 4 are examples of M2, and the third (!
I is a horizontal cross-sectional view of a rectangular reinforced concrete column, @4A and B are a perspective view and a cross-sectional plan view of the lightning reinforcement.

In this case, in the first embodiment, the lightning streak 6
... are joined by electric welding, gas welding, or mechanical bonding along the outer edges of ... with auxiliary reinforcements 7 ....

■ Example 3 The fifth factor, Figure WL6, is the third example. Similarly, Figure 5 is a cross-sectional plan view of a rectangular reinforced concrete column, and Figures 6A and B are the M of the lightning bars. A perspective view and a horizontal @ plan view.

In this case, in the second embodiment above, two lightning bars 6... are connected to one auxiliary bar 7...
There is '1''.

■ Example q Figure 7, 811! 1 is the fourth embodiment, and similarly, FIG. 7 is a cross-sectional plan view of a rectangular reinforced concrete column, and FIG. 8 A + 8 is a perspective view and a cross-sectional plan view of a lightning bar. .

In this case, in the first embodiment, the lightning streak 6
... are formed sufficiently large and the letters are spaced alternately. By doing this, it is also possible to share the shear force directly with the lightning bolt.

In addition, in the first to third embodiments, an auxiliary hoop may be placed between the lightning UJ6 and each other inside the core concrete 5'.

〔Effect of the invention〕

According to the present invention, all the main reinforcements can be fixed inside the core concrete to enhance the restraining effect of the core concrete, and the stiffness of the column under high axial force and high shear force can be significantly improved. Installation of lightning bolts can be done easily and with high power through factory production, improving workability on site, and reducing the construction cost of ultra-high 111Rcfi and trench design costs to Lee's cost, which is extremely beneficial. It is.

[Brief explanation of the drawing]

1 to 8 show embodiments of the present invention. FIG. 1 is a cross-sectional plan view of the first embodiment, and FIGS. 3 is a cross-sectional plan view of the second embodiment, and FIGS. 4 A and B are a perspective view and a cross-sectional plan view of the main parts of the same example. Figure 5 shows Il! Transverse plane 1 of embodiment 3
31+, Figures 6A and B are perspective views of the main parts of the same example.
The cross-sectional plan view, FIG. 7, is the cross-sectional plan view, FIG. 8, of the fourth embodiment.
Figure AIB is a perspective view and a cross-sectional plan view of the main parts of the same example,
FIG. 9 is a cross-sectional plan view of the conventional example. l...Main bars at four corners 2...Intermediate main bars 3...Square hoop 4...Core hoop 5...Pour concrete 5'...Core concrete 6...Irzine bars 7...Auxiliary bars Patent applicant Co., Ltd. Takenaka Corporation 3rd cause A B (t') Figure 6 Figure 5 A Figure 8

Claims (1)

[Claims] A reinforcement arrangement method for reinforced concrete columns that is characterized by surrounding multiple main reinforcing bars with hoops, etc., and connecting the main reinforcing bars along with lightning bars to anchor them inside the core concrete.