JPH0754403Y2 - Steel connection member - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] This invention is an architectural steel frame construction that enables efficient mounting of a formwork for forming pillar concrete at the corners between adjacent beam members. It relates to a mouth member.

[Conventional technology and its problems]

In a steel structure for construction, a formwork for forming a space for placing concrete pillars around the steel columns is attached prior to the construction work for slab concrete after the steel frames are assembled. This pillar concrete placing formwork can be easily attached to the periphery of the steel column except the floor slab, but in the portion around the connection member where the floor slab is installed,
Since it is necessary to install the formwork between the webs of beam members that intersect with each other, the carpenter must measure the size of each part around each joint and cut out the wood board after the steel frame has been assembled. The construction procedure was to attach the wooden formwork to a predetermined position to form the formwork.

Due to such circumstances, the conventional joint member has the upper and lower flanges 2 and the webs 3 of the respective beam members 1 which are orthogonally adjacent to each other at the stage of manufacturing the joint member, as shown in FIG. In the meantime, a concrete stop partition wall 4 for preventing the poured concrete from flowing out into the casting space portion A of the pillar concrete formed by the adjacent beam members 1 and 1 is welded in advance. Both beam members adjacent to each other 1,
L that divides the space A between the upper flanges 2 and 2 of 1
The structure has a structure in which the angle 5 for supporting the deck plate of the shape is attached in advance so that the corner portion of the right angle projects to the outside of the space A.

However, as described above, the work of making and mounting the wooden frame according to the structure of the connection part requires labor and time by a skilled carpenter because the structure of the connection part is complicated. However, there is a problem that it becomes a cause of hindering shortening of construction period and reduction of construction cost.

In addition, when using a wooden formwork, it takes time and time to install it, but since the formwork is made of wood after the placement of the pillar concrete, it is necessary to remove and remove the formwork. In addition to the problem that it is necessary, in addition, in the joint member manufactured in the factory, both ends of the L-shaped deck receiving angle, which is not so rigid in terms of strength, are welded between the adjacent beam members. When the connection member is transported from the manufacturing plant to the construction site, there are problems that the deck receiving angle becomes a factor that obstructs the loading capacity and causes bending damage.

[Means for Solving the Problems]

According to the present invention, in order to solve the above-mentioned problems of the conventional steel frame connecting member, the formwork assembling work for partitioning the space for placing concrete pillars around the connecting member is extremely efficient. The purpose of the present invention is to provide a connection member that can be used for other purposes.

The present invention is, as a concrete means for achieving the above object, a joint member of a steel-framed reinforced concrete structure in which a plurality of beam members are attached to a steel frame column at right angles to each other. At the corners between the webs of each beam, extend the studs horizontally from the webs of both adjacent beams,
The tip of the stud is wrapped around a steel reinforcing bar that is laid in the space for placing concrete pillars, and then bent to the outside of the stud into an L-shaped cross section that defines the outside of the space for placing concrete pillars. A metal form having a horizontal deck receiving side at the upper edges of both sides sandwiching the central right-angled corner, the height being the same as that of the web of the beam, Arranged so that the right-angled corners of the center protrude outside the space for placing concrete between the beams, and the ends of both sides of the metal form are fixed to the web surfaces of the beams respectively. It is characterized by having done.

[Action]

The joint member according to the present invention is a beam member in which the central portion is bent at a right angle between the webs of the beam members that are orthogonally adjacent to each other at the time when the member is mounted on a steel strut. A metal mold with an L-shaped cross section at the same height as the web is mounted so that the right-angled corners project to the outside of the space for placing the concrete pillar between the beams, thereby mounting the mold around the joint. The construction can be performed extremely easily and efficiently. Therefore, when the beam is connected to the connection member,
Since the mold mounting around the joint in the joint member has already been completed, the work of carpenters entering the lower surface of the beam material erected as in the past and assembling the mold around the joint again is eliminated. can do. The upper edge of this metal formwork is provided with a horizontal deck receiving side that supports the deck plate, so this deck receiving side reinforces the formwork and connects the deck plate and the formwork. Can be done reliably.

〔Example〕

Next, an embodiment of the connection member according to the present invention will be described with reference to the drawings. As shown in FIG.
At the time of being attached to the web 21, the webs 12 and 12 of the beam members 11 and 11 that are orthogonal to each other and are adjacent to each other in the connection member 10,
A metal formwork 13 obtained by bending an iron plate having the same height as that of 12 into an L-shaped cross section has a right-angled corner portion 14 of the formwork 13 having both beam members 11,1.
The space A is projected so as to project to the outside of the space A for placing concrete pillars, and the space A is arranged inside the metal formwork 13.

In this metal formwork 13, horizontal deck receiving sides 15 made of angle materials are welded to the upper edges of two sides 13a, 13b centering on a corner 14, respectively, and both ends 16 of the two sides 13a, 13b are welded to both beams. Material 11,
The webs 12 and 11 in FIG. In addition, two sides 13a in this metal form 13,
The length of 13b is determined on the basis of the size of the space A for placing concrete pillars, which is formed between both beam members 11, 11 which is designed in advance. Further, by welding the deck receiving side 15 made of an angle member to the upper edges of the two sides 13a, 13b respectively,
Helps to increase the rigidity of.

Before mounting the metal formwork 13 between the beam members 11, 11, a plurality of studs 18 are provided along the inner surface of the metal formwork 13 from both webs 12, 12 located inside the metal formwork 13, respectively. And project it so that it extends horizontally. These studs 18
Is set to a length such that the tip 19 is wound around a part of the steel-column main bar 20 arranged in the space A for placing the concrete between the beam members 11, 11. Each tip 19 is bent at a right angle to fit inside the formwork 13 until the formwork 13 is attached, and after the stud 18 and the main bar 20 are connected to each other. Metal formwork
13 is mounted as described above.

The metal formwork 13 is attached to the joint member 10 in the field as described above, but it may be attached in advance when the joint member is manufactured in the factory. Also, the connection member 10
In order to make it easy to attach the metal formwork 13 to the, as shown in FIG. 3, both ends 16 of the metal formwork 13 are pre-welded with attachment angles 22 having bolt holes 23, and the joint Both ends of the formwork 13 are also included in the beam web 12 of the member 10.
The bolt holes 24 are formed in the portion where the 16 is located, the metal formwork 13 is not welded to the beam material 11 in the factory in advance, and is carried to the construction site as a part and then to the joint member 10 on the site. You may make it fix via the bolt 25.

〔effect〕

In the joint member according to the present invention, a metal form having an L-shaped cross section having the same height as the height of the beam web is previously provided between the beams adjacent to each other at right angles. Since it was installed so that the space for pillar concrete placing of
When the connection members are mounted on the steel column in the field, it becomes extremely easy and efficient to mount the formwork around the connection members. It is possible to eliminate the troublesome work of cutting and mounting it as a formwork and the danger associated with working at heights. Also, in this connection member, the formwork around the connection is metal,
It is not necessary to dismantle the mold after pouring concrete like a conventional wooden mold, and since the mold can be embedded in concrete as a part of the structure, work efficiency can be remarkably improved.

Further, in the conventional joint member, a concrete stop partition wall for forming a part of the concrete pouring space A around the joint must be previously attached between the upper and lower flanges of each beam at the manufacturing stage. However, in the joint member of the present invention, by installing the metal formwork, it is not necessary to provide this partition wall, and therefore, in combination with the great efficiency improvement of the formwork assembling work described above, It can be expected to save time and shorten construction work.

[Brief description of drawings]

FIG. 1 is a perspective view showing the structure of a connection member according to the present invention, FIG. 2 is a sectional view, FIG. 3 is a perspective view showing another embodiment, and FIG.
FIG. 1 is a perspective view showing the structure of a conventional joint member. 10: Connection member, 11: Beam material, 12: Web, 13: Metal formwork, 1
4: Formwork corner, 15: Deck receiving side, 16: Formwork both ends, 18: Stud, 19: Stud tip, 20: Main bar, 21: Steel column, 22: Mounting angle, 23, 24: Bolt hole, 25 : Bolt, A: Space for placing concrete pillars.

Claims (1)

[Scope of utility model registration request] 1. A joint member 10 having a steel-framed reinforced concrete structure in which a plurality of beam members 11 are attached to a steel column 21 at right angles to each other, and between the webs 12 of the beam members 11 in the joint member 10. A stud 18 is horizontally extended from the webs 12 of the adjacent beam members 11 at the corner of the stud, and the tip of the stud 18 is wound around the main bar 20 for steel frame arranged in the space A for pillar concrete placing. After that, the height of the beam 11 is a web made of an iron plate that is bent to have an L-shaped cross section that defines the outside of the pillar concrete placing space A on the outside of the stud 18.
A metal formwork 13 having the same height as 12 and having horizontal deck receiving sides 15 at the upper edges of both side edges 13a, 13b sandwiching the central right-angled corner 14 respectively, and the central right-angled corner 14 is Double beam material 11
And the end portions 16 on both sides of the metal formwork 13 are fixed to the web 12 surfaces of both beam members 11, respectively. Steel frame connection member.