JP2610539B2 - Column joint structure in a fieldend frame and method of constructing a structure having the same frame - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a high-rise steel framed structure, which is located between a right and left high-rise frame composed of columns and beam members, and between the two high-rise frames. A joint structure of a column of the Vierendeel frame and a structure having the same structure in a structure composed of a Vierendeel frame beam in which a frame of a high-rise portion is connected and a column and a beam are rigidly connected. It relates to a method of constructing an object.

(Prior Art) In a structure composed of the frame of the right and left high-rise sections and the fieldendall frame, the column joint of the fieldendall frame is usually formed of a rigid joint.

(Problems to be Solved by the Invention) In a structure composed of a right and left high-rise frame and a fieldend frame that is located between the two high-rise frames and joins the two high-rise portions, Regardless, at the time of design, the load on the completed structure (eighth
It is common practice to design the member cross section of each frame in a structure on the basis of "stress when a vertical load is applied".

In the above-mentioned structure, FIG. 8 shows that the column axial force of the frame (A) in the high-rise section higher than the height position of the feeder-endall frame (B) is higher than that in the high-rise section at the same height position as the feeder-endall frame. In the case where, even if it is added to the Vierendeel frame (B) via the column (particularly the boundary column), only small shrinkage that does not affect the frame (B) occurs,
FIG. 4 is a stress diagram of a fieldendor frame (B).

On the other hand, the construction order of the structures is generally as follows.

The right and left high-rise frames will be constructed up to the height of the feederend frame to be connected between the two frames.

A fieldend frame is installed between the right and left high-rise frames.

In this case, the joints of the columns of the fieldendor frame are rigidly joined (fully joined) by high-strength bolting or welding.

Build a high-rise frame on the left and right above the Fireendel frame.

In addition, the framing work and the finishing work of the floor and the wall proceed in parallel with or after the construction order.

In this case, in the above construction process, the column axial force of the high-rise frame is transmitted to the lower floor of the high-rise frame, and the column and beams (especially boundary beams) near the high-rise portion and the fieldendale frame are connected. Is transmitted to the fieldendir frame via the

That is, in FIG. 9, the column axial force of the high-rise frame (A) above the feelerend frame (B) is applied, and the columns (especially boundary columns) of the high-rise frame (A) shrink ( FIG. 9 is a diagram of applied stress generated in a feelerend frame due to (axial deformation of a column).

Therefore, when considering the construction order of the structure and the flow of the column axial force from the frame of the high-rise part of the structure to the fieldel frame, the stress (bending stress due to the vertical load) in this case is And FIG. 10 is a stress diagram obtained by adding FIG. 9 to FIG.

As can be seen by comparing FIGS. 8 and 10, in consideration of the construction method, FIG. 10 shows an uneven stress that is completely different from the stress of the fieldendir frame at the time of design.

That is, when the additional stress shown in FIG. 9 is generated, the member stress in the fieldendall frame is significantly different between the lower layer and the upper layer, so that various types of members are required, and the production of the member and the construction of the frame are extremely complicated. In addition to the increase in cost and cost, there are difficulties in construction management.

The present invention has been proposed in view of such circumstances,
The purpose is to prevent the occurrence of the additional stress, to make the stress of the fieldendall frame almost uniform from the lower layer to the upper layer, to enable uniform member design with a small number of types, and to facilitate construction management. Another object of the present invention is to provide a joint structure of columns in a fieldend frame and a method of constructing a structure having the same frame.

(Means for Solving the Problems) In order to achieve the above object, the present invention relates to a frame of a right and left high-rise part comprising a column and a beam member, and a frame of the high-rise part located between the two high-rise parts. And a beam and column are rigidly connected to each other, and the beam and column are rigidly connected to each other. The present invention relates to a joint structure of columns in a feederend frame, which is provided with a shear force transmission mechanism that transmits only the shear force.

Further, according to the method for constructing a structure having a fireendel frame according to the present invention, the frame of the right and left high-rise portions including the columns and the beam members is located between the frames of the high-rise portions, and the frame of the high-rise portion is provided. In a structure composed of a field and a beam and column rigidly joined with a beam and a column, the right and left high-rise frames are connected to the middle of the frame between the two frames. In the middle of the frame of the left and right high-rise sections, a feederneel frame having a joint of an H-shaped steel column provided with the shear force transmission mechanism is attached to the high-rise section. The flange and the web of the joint portion of the column are temporarily joined so that the column axial force of the frame is not transmitted, and then the frame of the right and left high portions above the height position of the fieldendel frame is constructed. Build Later, it is characterized in that the joining flanges and web of the joint portion of the pillar in which a shear force transmission mechanism in the Vierendeel bridge Frames.

(Operation) According to the present invention, as described above, the frame is connected between the right and left high-rise frames composed of columns and beam members, and the high-rise frames are connected to each other. In a structure composed of a jointed fieldend frame, a joint portion of an H-shaped steel column of the fieldend frame is free in a vertical direction, and a shear force that transmits only a shear force without transmitting a column axial force is transmitted. Since the transmission mechanism is provided, it is not affected by the shrinkage of the columns of the high-rise frame, and it is possible to prevent the additional stress as shown in FIG. 9 from being generated in the fieldendir frame, as shown in FIG. No uneven stress occurs.

According to the method for constructing a framework of a building having a feeler-end frame according to the present invention, a shear force transmission mechanism is provided at the column joint to construct a feeler-end frame, and the column joint of the same frame is free in the vertical direction. Then, when the frame of the upper layer structure is constructed from the Fireendel frame, and when the influence of the column axial force of the frame becomes small, the column joints of the Fireendel frame are fully joined to form the frame. The stress is made to be substantially uniform from the lower layer to the upper layer.

(Example) Hereinafter, the present invention will be described with reference to an illustrated example.

FIG. 1 is a conceptual diagram in which a shear force transmission mechanism (C) that transmits only a shear force without transmitting a column axial force is provided at a column joint of a column (1) of a feederend frame (B).

First, in the structure, the right and left high-rise frames are constructed up to the height position of the fieldendir frame to be connected between the two frames, and then a shear force transmission mechanism is installed between the two frames. A fireendel frame with the joints of the H-shaped steel columns provided will be constructed.

FIG. 2 and FIG. 3 show an embodiment of the shearing force transmission mechanism in the above-mentioned construction stage, in which a web of a column (1) composed of an H-shaped steel column in a fieldend frame (B) is vertically placed. A notched column joint with minute clearance is provided, and adjacent webs in the notched joint (1a)
A pair of front and back PC steel rods (3) and (3) having extremely low bending rigidity are connected between the mounting pieces (2) and (2) disposed in the first section.

Since the illustrated embodiment is configured as described above,
The column (1) is vertically free within the clearance of the shearing force transmission mechanism (C). That is, even if the axial force of the columns (particularly the boundary columns) of the left and right frames (A) of the feederend frame (B) is transmitted to the feederendall frame (B), the shear force transmission mechanism of the column joint (C) Because the bending stiffness of the PC steel bar in the part is extremely small, vertical movement cannot be restrained. Therefore, no column axial force is transmitted from the frame (A) to the feelerend frame.

In addition, for the shear force acting on the shear force transmission mechanism (C), PC
The steel bar (3) is restrained in the horizontal direction by resistance.

Thus, the axial force of the frame (A) only acts as a shearing force on the feederendele frame (B), and the vertical direction in the vertical direction is small enough for the entire feederendale frame (B). Deformation occurs, but a stable state at the time of construction is maintained.

After the shearing force transmission mechanism (C) is in the free state and the feederend frame (B) is constructed from the lower layer to the upper layer, the frame (A) of the left and right high-rise portions of the frame (B) is constructed. ), The flange and the web of the joint portion of the H-shaped steel column of the fieldend frame (B) in a state where the axial force of the column from the frame (A) is not transmitted to the mechanism (C). By a joining plate (4) and a high-strength bolt (5) or by welding,
The column joint is a rigid joint.

The shearing force transmission mechanism (C) may be provided for each layer of the feelerendel frame or may be provided for every two or three layers.

FIGS. 4 and 5 show another embodiment of the present invention. As the connecting steel material of the webs (1a) and (1a) of the column (1) in the column joint, bending rigidity is used instead of the PC steel rod (3). This shows a case where a pair of thin iron plates (6) and (6) having small front and back sides are used. Each thin iron plate (6) is connected to a mounting piece (7) disposed on the web (1a) via a bolt (8). Installed.

In the figure, the same reference numerals are given to the same parts as those in the above embodiment.

6 and 7 show still another embodiment of the present invention,
Temporarily joined steel frame pieces (10) with sliding plates (9) made of high-molecular polyethylene, stainless steel plate, etc. attached to both outer surfaces of the flange (1b) of the column (1) in a horizontal column joint with minute clearance Then, only the lower half of the sliding plate (9) is temporarily joined to the lower half of the flange (1b) of the column (1) via a high-strength bolt (5 ') which constitutes a joining bolt. 9), one of the columns (1) slides vertically along the slide plate (9), so that no column axial force is transmitted, and only the shear force is applied to the slide plate (9). )
In the case of full joining, the web (1a) surface is joined, the sliding plate (9) is removed, and then the upper and lower flanges (1b ) Surface with steel piece (10) and high-strength bolt (5 ')
(5 ") is used for the actual joining. (11) is a filler plate, and (5") is a high-strength bolt at the upper half of the flange for the actual joining.

In the drawing, the same reference numerals are given to the same parts as those in the above-described embodiments.

(Effects of the Invention) According to the present invention, a frame is formed between a right and left high-rise frame composed of a column and a beam, and is located between the two frames. Without connecting the column joints of the same frame from the beginning to the upper layer with lower rigid joints as before, without transmitting the column axial force from the high-rise frame to the column joints, only the shearing force is applied. By providing the shear force transmitting mechanism for transmitting the force, the frame is constituted by an H-shaped steel column, and is not affected by the shrinkage of the column of the high-rise frame, so that it is possible to prevent the additional stress from being generated in the fieldendir frame. The stress is almost uniform from the lower layer to the upper layer, making it easier to plan the structure.Also, it is possible to unify the member design with a small number of types, simplify the construction, and facilitate the construction management. .

The invention according to claim 2 is characterized in that the H
The joints of the joints are provided with a pair of steel members with small bending stiffness.
The connected steel material functioned as a tensile material with extremely low bending stiffness, converting the column axial force into a shear force so that the stress of the fieldendale frame was almost uniform from the lower layer to the upper layer. Things.

The invention according to claim 3 is characterized in that the H
The shear force transmission mechanism is constructed by connecting the flanges at the horizontal column joints provided on a column made of a steel column and connecting them with a joining plate to which a sliding plate is attached, so that the column axial force is not transmitted. By transmitting only the force, the stress of the feelerendel frame is set to a substantially uniform stress state from the lower layer to the upper layer.

The invention according to claim 4 is characterized in that the frame of the high-rise portion composed of the column and the beam member is located between the two frames, and the two frames are joined together.
In a structure composed of a column and a beam and a feeder deal frame that is rigidly connected, the frame of the high-rise section is built up to the height position of the feeder deal frame to be connected to the both frames, Then, in the middle of the frames of the two high-rise sections, a fieldend frame having an H-shaped steel column joint having a shear force transmission mechanism is provided so that the column axial force of the high-rise sections is not transmitted to the same frame. The joint of the flange and the web of the joint portion of the column is preliminarily joined to be constructed, and then a frame of a high-rise portion on the right and left above the height position of the frame of the feederendale is constructed. The flanger and the web of the joint portion of the column provided with the shearing force transmission mechanism in the frame are fully joined, and the feederend frame connecting the left and right high-rise frames is substantially uniform from the lower layer to the upper layer. It is to build a framework of the structure to be a force condition.

[Brief description of the drawings]

FIG. 1 is a conceptual view in which a shear force transmitting mechanism is provided on a pillar in a frame of the fire-endeal frame in the present invention, FIG. 2 is a front view showing an embodiment of a shear force transmitting mechanism, and FIG. Arrow II
I-III, FIG. 4 is a front view showing another embodiment of the shearing force transmission mechanism, FIG. 5 is a VV view of FIG. 4, and FIG. 6 is still another example of the shearing force transmission mechanism. FIG. 7 is a front view showing the embodiment, FIG. 7 is a view taken along the line VII-VII of FIG. 6, and FIGS. 8, 9 and 10 are stress distribution diagrams of the fieldendall frame, respectively. (A) ... frame of right and left high-rise part, (B) ... framed frame, (1) ... pillar, (1a) ... web, (1)
b) Flange, (2) Mounting piece, (3) PC steel bar, (4) Connection plate, (5) High-strength bolt,
(6) ... thin iron plate, (7) ... mounting piece, (8) ... bolt, (9) ... sliding plate, (10) ... steel frame piece, (11)
... Filler plate.

Claims (4)

(57) [Claims] An intermediate structure between a right and left high-rise frame comprising columns and beam members in a building, and the high-rise frame and a frame, the two beams being rigidly joined to each other. And a joint structure of an H-shaped steel column of the feederend frame, wherein a shear force transmitting mechanism that transmits only a shear force without transmitting a column axial force is provided. A joint structure for columns in a fieldend frame. 2. An H-shaped steel column of the above-mentioned Fireendel frame is provided with a notch type column joint, and a pair of H-shaped steel columns constituting the column in the joint is formed by a pair of webs having low bending rigidity. The joint structure of a column in a feederend frame according to claim 1, wherein the shear force transmission mechanism is formed by connecting steel members. 3. A joint in which a horizontal column joint is provided on an H-shaped steel column of the above-mentioned Fireendel frame, and a sliding plate is attached between flanges of the H-shaped steel column constituting the column in the column joint. The joint structure of a column in a feederend frame according to claim 1, wherein the plate is connected by a high-strength bolt to constitute a shear force transmission mechanism. 4. A structure comprising said right and left high-rise frames and a feederend frame connecting said high-rise frames to each other, wherein the column joints of the feederend frames have a height of the feederendall frame. The shear force transmission mechanism that transmits only the shearing force without transmitting the column axial force of the frame in the upper part of the upper layer from the height position is provided in a free state in the vertical direction to construct the feederend frame, and the feederend frame is constructed. A method for constructing a structure having a fireendel frame, comprising: constructing a frame of an upper layer of a higher layer, and then permanently joining a column joint of the shearing force transmission mechanism.