JPS61142240A - Pillar leg fixing and connection of reinforcing bar 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 [Industrial Field of Application] The present invention relates to a method for fixing and joining a column base of a steel column in a steel frame structure.

[Prior art]

Conventionally, when the column base of a building's steel frame is fixed,
When the column base is exposed, it is difficult to fix it in a way that completely transmits the stress, so in order to transmit stress, it is necessary to wrap around the column base or make the column base with concrete. It was necessary to embed it in the foundation.

Neck wrapping is a method of placing reinforcing bars above the base plate of a column and pouring concrete to a certain height around the base of the column. When performing neck wrapping, the base of the column becomes large and the reinforcement arrangement and Requires complicated work such as setting up formwork and pouring concrete.

When embedding column bases, the work is complicated as it is necessary to leave concrete at the planned location of the column base or pour concrete in order to set the anchor bolts during construction. .

[Purpose and structure of the invention]

The object of the present invention is to provide a method for fixing and joining the column bases of a steel frame column, which can advantageously solve all of the above-mentioned problems. The lower part of the steel base frame 4 is made up of four arranged support legs 1, a lower frame 2 to which the lower parts of the support legs 1 are fixed, and a horizontal base plate support 6 fixed to the upper end of the support legs 1 at the same level. , the foundation concrete is installed and fixed at the planned position, and the foundation reinforcing bars are placed between the supporting legs 1 of the steel base frame 4, and then the foundation concrete IJ is placed to a level between the foundation reinforcing bars and the base plate support 6. -5 'e Concrete the steel base plate 7 of the steel column B.
A method for fixing and joining a column base of a steel frame column, which is characterized in that the pace plate is placed on each pace plate support base A in a steel frame column and is fastened and connected with a high tension bolt 8Vc.

〔Example〕

12 to 14 show a steel base frame 4 used in an embodiment of the present invention.
The lower ends of four supporting legs 1 arranged at intervals in the front-rear direction and left-right direction so as to be located at the corners of the square are fixed by welding to a lower frame 2 having an opening,
In addition, the upper end VC of each support leg 1 is integrally provided with a horizontal base plate support 6 for mounting and connecting the base plate of the column base in the steel column, and the upper surface of the base plate support B is arranged at the same level. Further, a bolt insertion hole 9 is provided in the base plate support B.
A bolt insertion hole 10 is also provided at the same level in the middle part of each support leg 1, and the base frame 4 has a cross-sectional performance equal to or higher than that of the steel column B.

FIG. 15 shows a steel pedestal 11 used in an embodiment of the present invention, in which the lower ends of columns 13 are integrally welded to the four corners of a planar quadrangular lower frame 12 having an opening. Fixed.

Next, a method of fixing and joining a column base according to an embodiment of the present invention using the steel base frame 4 and steel pedestal 11 will be described.

First, as shown in Figure 1, the 7'c4
After placing the pedestal 11 at a predetermined position on the stone layer 15, as shown in FIG. 2, concrete 16 is placed to bury the lower part of the steel pedestal 11, and then as shown in FIG. As shown in FIG. Fix it.

As shown in Figures 5 and 6 of the next VC, after the base frame 4 is placed across each support rod 17 and fixed by welding, the lower foundation reinforcing bars 18.19a-base frame are extended in the front-back and left-right directions. 4, and then, as shown in FIGS. 7 and 8, two horizontal steel supports 20 placed in parallel on the same level are placed on the steel base frame 4. After arranging adjacent support legs 1Vc and fixing them with bolts 21, the upper foundation reinforcing bars 22 and 23 extending in the front-rear direction and left-right direction are placed between the support legs 1 on the steel base frame 4 to secure the steel machine 20. Place it on top.

Next, as shown in FIG. 9, after pouring foundation concrete 5 to a level between the supporting legs 1 and the upper foundation reinforcing bars on the steel base frame 4, as shown in FIG. 7 is placed on each base plate support B of the steel base frame 4 and fastened together with high-tensile bolts 8 inserted across them, and then, as shown in FIG. A grout 24 of concrete or mortar is applied to the surface.

〔Effect of the invention〕

According to this invention, four supporting legs 1 are arranged at intervals in the longitudinal and horizontal directions, and the lower frames 2 to which the lower parts of the supporting legs 1 are fixed are fixed to the upper ends of the supporting legs 1 at the same level as the lower frames 2, and Since the lower part of the steel base frame 4 consisting of the base grate support stand 3 is installed at the location where the foundation concrete is planned to be poured, the foundation reinforcing bars are simply lowered from above between the support legs 1 of the steel base frame 4. Since the reinforcing bars can be placed easily and quickly in the steel base frame 4, and the foundation concrete 5 is poured with the foundation reinforcing bars placed in the steel base frame 4, the steel base frame 4 can be used as the foundation. The base plate 7 of the steel column 6 can be firmly fixed to the concrete 5, and the base plate 7 of the steel column 6 can be fixed to the high tensile strength port 8 with almost no elongation with respect to each base plate support base B of the steel base frame 4.
Since they are tightly connected, effects such as being able to reliably transmit stress from the steel column 6 to the steel pace frame 4, which is firmly fixed, can be obtained.

[Brief explanation of the drawing]

Figures 1 to 11 show the construction order of the method for fixing and joining the base of a steel frame column according to an embodiment of the present invention, and Figure 1 shows the state in which the base frame pedestal is installed on the chestnut layer. The side view showing the 2nd figure is a disposable conch! Figure 5 is a vertical side view and plan view showing the state in which the base frame has been set and the lower foundation reinforcing bars have been placed. Figure 16 is the A of Figure 5. - A cross-sectional view, Figure 7 is a longitudinal side view showing the state in which the horizontal machine is attached to the support leg of the base frame and the upper foundation reinforcing bars are arranged, Figure 8 is B of Figure 7.
-B line sectional view, Figure 9 is a vertical side view showing the state in which the foundation concrete has been poured, Figure 10 is a vertical side view showing the state in which the steel columns are connected to the base frame, and Figure 11 is the foundation concrete and It is a vertical side view showing a state in which grout is applied between the steel frame column and the base plate. Fig. 12 is a plan view of a pace frame used in an embodiment of the present invention, Fig. 16 is a side view thereof, Fig. 14 is a cross-sectional view taken along the line CC in Fig. 13, and Fig. 15 is an embodiment of the invention. FIG. 2 is a perspective view of a base frame support used in FIG. In the figure, 1 is the support leg, 2 is the lower frame, 6 is the base plate support, 4 is the steel base frame, 5 is the foundation concrete, 6 is the steel column, 7 is the base plate, 8 is the high-tensile bolt, and 11 is the steel support. Base, 12 is the lower frame, 1
3 is columnar body, 15:2 chestnut layer, 16 is abandoned conch IJ-)
, 17 is a steel support rod, 18 and 19 are lower foundation reinforcement bars,
20 is the favorite machine, 22 and 26 are the upper foundation reinforcing bars, and 24 is the grout. 5 Figure 2-1 Iku Frame 3: H-S-F 0-lay F support stand 4-4 Old ambiguity S-F-F-4 5:j! , 7o Yue Kong Lit

Claims (1)

[Claims] It consists of four supporting legs 1 arranged at intervals in the longitudinal and horizontal directions, a lower frame 2 to which the lower parts of the supporting legs 1 are fixed, and a horizontal base plate support 3 fixed to the upper end of the supporting legs 1 at the same level. Steel base frame 4
After installing and fixing the lower part of the foundation concrete at the planned location for pouring the foundation concrete, and placing the foundation reinforcing bars between the supporting legs 1 of the steel base frame 4, the foundation is built up to the level between the foundation reinforcing bars and the base plate support 3. A steel column column characterized in that concrete 5 is poured, and then the base plate 7 of the steel column 6 is placed on each base plate support stand 3 of the steel base frame 4 and fastened and connected with high-tensile bolts 8. Leg fixed joining method.