JPH0516904U - Mounting structure of band plate in steel reinforced concrete column - Google Patents

Abstract

(57) [Abstract] [Purpose] It is placed around a cross-shaped pillar steel frame,
The band plate that stiffens the flange is securely attached to the column steel frame while following the dimensional error of the column steel frame. [Structure] A band plate 2 that circulates around a cross-shaped pillar steel frame 1 having flanges 1a and 1b and stiffens the flanges 1a and 1b is irrespective of the presence or absence of dimensional error of the pillar steel frame 1 and its size. , which attached in close contact thereto, the band plate 2 and the main plate 2 ₁ a shape surrounding the flange 1a of the 3-way pillars steel 1, in close contact with the outer periphery of one-way flange 1b remaining, main plate 2 ₁ It is divided into a sub plate 2 ₂ which is butt-welded to and welded to the main plate 2 _{1 and} the inner dimension of the main plate 2 ₁ is surrounded by a distance larger than the distance between the end portions of the opposing flanges 1a, 1a of the pillar steel frame 1, ₁ is circumscribed on the flange 1a of the pillar steel frame 1 or is arranged with a clearance between the flange 1a of the pillar steel frame 1 and the outer circumference of the pillar steel frame 1 to insert the filler plate 3 as necessary, and the dimensional error of the pillar steel frame 1 The band plate 2 is attached in a state where the band plate 2 is surely brought into close contact with the column steel frame 1 while following the above.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a band plate mounting structure for a steel reinforced concrete column in which a band plate for stiffening a flange of a column steel frame assembled in a cross shape is mounted on the column steel frame regardless of the assembling accuracy of the column steel frame.

[0002]

[Problems to be Solved by Prior Art and Invention]

 When the column steel frame of a steel reinforced concrete column is constructed by combining H-shaped steel in a cross shape, in order to transmit the tensile force and compression force from the beam steel frame to the column steel frame without deforming the flange, A band plate is arranged around the outer circumference of the pillar steel frame.

Since this band plate is required to be placed in close contact with the flange for the purpose of stiffening the flange of the column steel frame and restraining the deformation thereof, conventionally, the center line passing through the position circumscribing the flange is conventionally used. After the assembly of the column steel frame, the ends of the divided band plates are butt-welded to each other and are attached to the column steel frame in close contact with the flange.

However, since the band plate is made by bending, the inner method is manufactured with a relatively high accuracy so as to match the distance between the ends of the opposite flanges of the column steel frame, while the dimensional error in the formation of the column steel frame is maximum. Since the tolerance is ± 4 mm, the error between the two tends to be large, in which case the adhesion between the band plate and the flange will deteriorate. As a result, when the inner dimension of the band plate is relatively small, the band plate is deformed by heating with gas, etc., and when it is large, the band plate is deformed by heating or pressing, etc. It is necessary to perform processing to close the gap created in the.

This invention was made by paying attention to the problems faced at the time of mounting due to the manufacturing reasons of the conventional band plate, and proposes a new mounting structure for solving this problem.

[0006]

[Means for Solving the Problems]

 In the present invention, the band plate is divided into two parts at a position closer to one side than the center line, and at the same time, the inner dimension of the band plate is set larger than the distance between both ends of the facing flange of the column steel frame, and the band plate is separated from the flange. The band plate is attached so that it is firmly attached to the pillar steel frame while following the manufacturing error of the pillar steel frame by allowing for margin.

The band plate surrounds the flanges on three sides of the pillar steel frame, and is divided into a main plate whose internal dimension is larger than the distance between both ends of the flange, and a sub plate which adheres to the outer periphery of the remaining one flange, Butt against each other and welded.

By making the inner dimension of the main plate larger than the distance between both ends of the opposing flanges, when the main plate and the sub-plate are butted against each other, a manufacturing error may occur between the inner periphery of the main plate and the flange surrounding it. Clearance is generated in many cases regardless of the presence or absence of large or small, and a filler plate having a plate thickness corresponding to the size is inserted into this clearance to ensure the close contact between the band plate and the flange. When the inner method of the band plate matches the positive maximum value of the error of the column steel frame, no clearance is created and the band plate and the flange can be in close contact without the need for the filler plate.

The main plate surrounds the flanges on three sides and is abutted against the sub-plate at a position where the flange is removed, so that the sub-plate is surrounded by the flange regardless of the clearance between the main plate and the flange. Since it is placed in intimate contact with each other, it is not necessary to insert a filler plate between the sub plate and the flange.

[0010]

Embodiments The present invention will be described below with reference to the drawings illustrating one embodiment.

As shown in FIGS. 2 and 3, the present invention constructs a steel-reinforced reinforced concrete pillar C, which is circulated around a pillar steel frame 1 having a cross-shaped cross section having flanges 1a and 1b, and its flange 1a. The octagonal band plate 2 for stiffening the 1 and 1b is attached in close contact with the manufacturing error of the column steel frame 1 while absorbing it.

[0012] band plate 2 surrounds the flange 1a of the 3-way pillars steel 1, as shown in FIG. 1, the outer periphery of the opposing flanges 1a, a main plate 2 ₁ a shape sandwiching the 1a, leaving 1 hand of flange 1b in close contact with, and is divided into the sub-plate 2 ₂ to be welded are butted to the main plate 2 _1. Main plate 2 ₁ at both ends opposing flange 1a, and closer than the end of 1a to sub-plate 2 ₂ side, and the sub-plate 2 ₂ are welded at a position removed a flange 1a, 1a.

[0013] As shown in FIG. 1, sandwiched between the main plate 2 ₁ of inner dimension w, i.e. opposite flange 1a, the distance between both pieces sandwiching 1a is h pillars steel 1, i.e. the main plate 2 ₁ flange 1a that is larger than the end distance between 1a, the main plate 2 ₁ flange 1a, is arranged a clearance is provided between the 1a.

[0014] subplate 2 ₂ surrounds only the flange 1b of one position, since no interfere with other flange 1a, since attached thereto regardless dimensional errors of the column steel 1, as shown in FIG. 1 independently of the main plate 2 ₁ is placed in close contact with the flange 1b.

As described above, the inner dimension w of the main plate 2 ₁ is set to be _{equal to} or _larger than the component h _max of the column steel frame 1 in which the positive maximum error is added, so that the component h of the manufactured column steel frame 1 is If h _{ma x} smaller than the inner periphery and the flange 1a, but between the 1a clearance is formed, the thickness of the full I Ra plate 3 corresponding to the size as shown in the clearance is inserted, the main plate 2 ₁ and the flange 1a through the filler plate 3, and the 1a fully close contact.

When the inner dimension w of the main plate 2 ₁ is equal to the maximum value h _max of the formation h of the column steel frame 1, no clearance is created between the flanges 1a and 1a, so that the main plate 2 ₁ has the flange 1a. , 1a, and the filler plate 3 is not inserted between the flanges 1a, 1a.

As shown in FIG. 2, bolt holes 1c and 2a for bolt connection with the beam steel frame B are opened in the flanges 1a and 1b of the pillar steel frame 1 and the flanges 1a and 1b of the band plate 2, respectively. As shown in FIG. 4, which shows the relationship between the filler plate 3 and the bolt positions, bolt holes 3a are also formed in the filler plate 3 at positions corresponding to the bolt holes 1c and 2a.

FIG. 5 shows an example of manufacturing the filler plate 3 when it is inserted before inserting the bolt, and FIG. 6 shows an example of manufacturing the filler plate 3 when inserting it after inserting the bolt. In the illustrated embodiment, the bolt is the bolt 5 of the joining metal piece 4 described later.

The main plate 2 ₁ and the sub-plate 2 ₂ are in close contact with the flanges 1a and 1b, respectively, and are welded to each other to form an integrated band plate 2, as shown in FIGS. The metal fitting 4 for joining the beam steel frame B is connected.

Although the embodiment shown in FIG. 2 shows a case where a split T metal (high split) which is continuously welded to the flange of the beam steel frame B is used as the metal joint 4, the bolt 5 has this joint. The flange of the metal fitting 4, the band plate 2, the flange 1a of the pillar steel frame 1 and the filler plate 3 are penetrated and tightly connected.

The band plate 2 stiffens the flanges 1a and 1b to which the metal joint 4 is directly connected while carrying the tensile force and the compressive force from the beam steel frame B transmitted by the metal joint 4, and at the same time, partially The tensile force is transmitted to the flange 1a on the opposite side of the pillar steel frame 1 and the inside of the pillar steel frame 1 is filled with concrete so that the tensile force is applied to the surface of the concrete on the opposite side, and the stress from the beam steel frame B is applied to the pillar. It has a role to disperse and transmit to the flanges 1a and 1b of the steel frame 1 and the web.

FIG. 7 shows an example of assembling the band plate 2 when the pillar C is a side pillar. When the pillar C is a side pillar or a corner pillar, the pillar steel frame 1 has the cross-sectional shape of the middle pillar shown in FIG. 1 with the flange on the side to which the beam steel frame B is not connected removed, but the band plate 2 of FIG. Like the case is configured from the main plate 2 ₁ and the sub-plate 2 ₂ which, in the case of the doorjamb shown in FIG. 7, the main plate 2 ₁ is installed surrounding the flange 1a of the 3-way beam steel B side, the flange so that the sub-plate 2 ₂ is placed on the absence side. In the case of a corner post, one of the opposing flanges 1a, 1a in FIG. 7 is absent, and the shape and combination of the band plate 2 are the same.

[0023]

[Effect of the device]

 The invention is as described above, and the band plate is divided into two parts, a main plate that surrounds the flanges on three sides and a sub plate that closely adheres to the outer periphery of the flange on one side. It is made larger than the distance between the ends of the opposing flanges, and it is formed with a margin between it and the flange.Therefore, by inserting a filler plate according to the size of the error, the dimensional error of the pillar steel frame The main plate can be attached to the flange of the column steel frame and joined to the sub-plate, and the band plate can be easily and securely attached to the column steel frame regardless of manufacturing errors. Can be done.

[Brief description of drawings]

FIG. 1 is a plan view showing a mounting state of a band plate around a pillar steel frame.

FIG. 2 is a plan view showing a connection state between columns and beam steel frames.

FIG. 3 is a vertical sectional view of FIG.

FIG. 4 is an elevational view showing an inserted state of a filler plate between a band plate and a flange.

FIG. 5 is an elevational view showing a filler plate.

FIG. 6 is an elevational view showing another filler plate.

FIG. 7 is a plan view showing an attached state of the band plate when the pillar is a side pillar.

[Explanation of symbols]

C: pillar, 1 ... pillar steel frame, 1a ... flange, 1b ... flange, 1c ... bolt hole, 2 ... band plate, 2 ₁ ...
Main plate, 2 ₂ ...... Sub plate, 2a ...... Bolt hole, 3 ...... Filler plate, 3a ...... Bolt hole, 4 ......
Joining hardware, 5 ... Bolt, B ... Beam steel frame.

Claims (2)

[Scope of utility model registration request] 1. An octagonal band plate mounting structure for constructing a steel reinforced concrete column, having a cross-shaped cross-section column having a flange, and circling around the column and stiffening the flange, the band plate being a column. It is divided into a main plate that surrounds the three flanges of the steel frame, and a sub plate that closely adheres to the outer periphery of the remaining one flange and is butt-welded to the main plate and welded. The inner dimension of the main plate is surrounded by this. The main plate has a size larger than a distance between both ends of the facing flanges of the pillar steel frame, and the main plate is circumscribed to the flange of the pillar steel frame or provided with a clearance between the flange and the outer circumference of the flange. Band plate mounting structure for steel reinforced concrete columns. 2. The filler plate is inserted into the clearance created between the inner periphery of the main plate and the flange of the column steel frame, and the main plate is in close contact with the flange via the filler plate. Item 1. An attachment structure for a band plate in a steel-framed reinforced concrete column according to Item 1.