JPH04203167A - Ground fabrication method and jig device for structural steelwork - Google Patents

Abstract

PURPOSE:To improve accuracy for the fabrication of a steel frame block for an ultra-high building by installing a plurality of jigs on a ground assembly site at the predetermined intervals with high accuracy and rigidity, erecting and securing steel frame column bodies to the jigs and then jointing a steel frame for a beam between the column bodies. CONSTITUTION:A steel frame support body 3 having a cylindrical support frame is erected on a base body 2, and an adjustable leg body 9 is fitted to the outside of the frame 6 via a plurality of stays 8, thereby forming a jig device 1. Thereafter, the predetermined number of the jig devices 1 are arranged on the concrete layer 20 of a rigidly compacted foundation at ultra-accurate intervals, and the base body 2 is secured with anchor bolts. Then, the lower end of a steel frame column body A is inserted and fixed to each support frame 6, and a steel frame B for a beam is jointed between columns A, thereby forming a block. This block is removed from the jig devices 1 and carried to the predetermined position for installation. According to the aforesaid construction, the block for an ultra-high building can be accurately fabricated on the ground, and a construction period can be shortened.

Description

[Detailed Description of the Invention] [Field of Industrial Application] This invention relates to a method for physically assembling the steel frame of a structure at a location other than the construction site, and a method for assembling the steel frame three-dimensional structure in the new ground assembly. This relates to the jig equipment β used for.

[Conventional technology]

In recent years, structures have been in the process of becoming ultra-high-rise buildings, and the steel framework that is the backbone of these structures is
For elevating steel beams, steel columns, etc., each suspended material is unloaded in the air as usual, and the lifted suspended materials are connected and assembled on site.

[The mystery that invention attempts to solve]

During the construction of a super high-rise structure, as the steel frame moves to the F direction, the temporary materials used for it will be brought in, i.e.
The time required for elevating work from ground level to high-altitude sites is also increasing, and as a result, the construction period has been forced to lengthen, and the level of danger is also increasing.

Therefore, we addressed the need to simplify the transportation of these materials, that is, the simplification of cargo handling at elevated heights, and as one of the means to achieve this, we conducted so-called ground assembly production in which blocks of steel frames were assembled on the ground surface, and this was carried out at elevated locations. A technical concept has been developed in which the structure is hoisted to the site and added to the upper end of the already assembled steel frame to gradually increase the height of the structure.

However, unlike the previous method of adding high-grade medium-grade materials, a single steel frame that is essentially formed by assembling medium-grade materials has multiple connection points using existing steel frames. Because it is a structure that performs various functions, its precision is required to be extremely high, incomparable to conventional structures.

Therefore, this invention produces a desired block-shaped three-dimensional steel structure in the area adjacent to the construction site of a high-rise or ultra-high-rise structure, and then elevates it to form an already assembled structure.
Based on the above-mentioned construction method of joining the h-end of a three-dimensional steel frame structure, in particular, several jigs for erecting steel column materials having a verticality or, depending on the case, a set slope, are installed on the ground surface. The steel frame is installed on the ground in accordance with the setting form and position with high precision, the steel frame is inserted into the jig and erected, and it is firmly fixed with the set precision to form a steel frame column.
A method in which a vertical plane frame structure or a cubic frame structure having a "line J-shape" or "plane" shape in plan view can be assembled into the ground by fixing the steel frames to a plurality of upright steel columns via riding steel frames, and The purpose is to provide a jig device for this purpose.

[Means for resolving course issues]

This invention, as a means to achieve the object set forth in item h,
On the surface of the ground in the area adjacent to the construction site of the high-rise structure, in accordance with the installation configuration of the steel frame column required within the construction setting range of the structure to be constructed on the construction site, the installation configuration and span dimensions etc. Firmly install a plurality of jig devices for steel frame columns in positions that comply with accuracy, and engage the lower end of the material that will become the steel frame column with each of the jig devices, and fix this, The steel column is erected vertically or at a predetermined inclination using only the jig, and then fixed to the erected steel column via a beam steel frame to form a vertical frame steel structure in a plan view or a planar shape, or a cubic The frame steel frame structure can be assembled by underground assembly, and the assembled steel frame structure can be separated from the jig device and transported to a desired position.

In addition, the jig device of the present invention combines the base body fixed to the setting ground H and the steel frame support body to which the steel column body is fixed via a charge receiving member, and connects the upper steel frame support body to the lower column support body. The is formed of a bottom plate and an annular column support frame having an inner hole into which the lower end of the steel column can be inserted, and a column fixing member that can be tightened and loosened by moving forward and backward through the column support frame is attached to the outside in the diametrical direction of the column support frame. Adjustable legs that are provided in such a way that they can be operated more freely, and that have a plurality of stays protruding radially from the outer periphery of the column support frame on each extension line in the radial direction, and that can be freely adjusted in the vertical direction at each tip of the stays. This is a jig device used in a method of assembling a three-dimensional steel structure, characterized in that the body is provided with a body.

[For production]

This invention involves assembling a steel frame structure of a high-rise building on the ground surface, suspending it from the upper part of the assembled steel structure, and connecting its lower end to the upper end of the existing steel structure,
In a construction method in which this work is repeated one after another to stack the steel frame of a high-rise structure in the h direction, on the ground surface of the area adjacent to the construction site of the high-rise structure, based on the steel column construction design required for the structure, A jig device for supporting the lower end of the steel column is firmly fixed to the lower end position of the steel column.

This jig device consists of two main members: a base that is fixed to the ground surface and a steel support that supports the lower end of the steel column, and these base and steel supports are connected by a load receiving member. There is. The steel frame support has a substantially cylindrical column support frame into which the lower end of the steel pipe column can be inserted, and the outer surface of the lower end of the inserted steel column is connected to the pressure fluid by the column fixing member provided on the column support frame. The jig device and the steel column are firmly fixed together by means of electric or manual pressure contact.

Further, a plurality of stays projecting in the horizontal direction are provided on the outer periphery of the column support frame, and at the tip of each stay, the action of the column fixing member is similar to that of the column fixing member, using a pressure fluid, electric or manual movement. Adjustable legs that can be moved up and down depending on the source are installed in the vertical direction so that their lower ends can touch the ground.

Each jig device installed on the ground surface at a set point is generally adjusted so that the steel frame column can be erected vertically, and when the steel frame column is erected at a set inclination angle. The steel frame support is adjusted by adjusting legs in the stay so that it is tilted at a set angle.

In this way, a plurality of steel columns of a set length are erected on the steel column assembly ground using a state device installed at a set point.
The plurality of upright steel columns are connected by the set beam steel frame, so that the steel frame is shaped like a “line” or “flush” in plan view.
If it is a "line" shape, the assembled steel frame should be g! It is used as a surface frame structure, and the line drawings that are shaped in a plan view are used as three-dimensional structures.Once the set steel frame structure is completed, the column fixing members of the jig device can be removed. After loosening, the steel frame structure is hoisted up by the hoisting means of the cargo handling equipment, separated from the jig equipment, and transported to a predetermined position.

A new steel column is inserted and fixed again into the jig device from which the steel frame structure has been removed, and is then erected.

In this way, only the lower ends of the steel columns to be erected are erected by the fixing means of the jig device, and a plurality of erected steel columns are connected with the steel frame for making a single structure. This allows the framework structure to be assembled into the ground.

[Example] Next, an example of the construction method of the present invention and a jig device used in the construction method will be described with reference to the drawings.
1) consists of two large and medium members: a base (2) that is fixed to the ground surface and a steel frame support that supports the lower end of the steel column (A), and these base (2) and steel frame supports (3). and are connected by a load receiving member (4). This load receiving member (4) does not restrict the connection state of the steel frame support (3) to the base (2), but is designed to be able to swing freely in all directions.

The steel frame support (3) is made up of a bottom plate (5) and a column support frame (6) fixed to the bottom surface of the column support (6).
is a substantially cylindrical annular body into which the lower end of the steel column (^) can be inserted, and the shape of the inner hole should be selected according to the form of the steel column (A).

At least the steel column body (
The pillar holder is attached to the soil surface of the bottom plate (5) so that the number of guide pieces (61) that can touch each surface at the lower end of ^) can guide the steel column (A) to a predetermined or correctly specified position. In addition, a pillar rotation IE piece (62) is provided at a position adjacent to the guide piece (61).

Similarly to the guide piece (61), the column support frame (6) has a front side surface formed at the lower end of the steel column body (A) that is engaged at least in the diametrical direction penetrating the L surface and the body. Depending on the scale of the steel column (A) to which the column fixing member (7), which can come into contact with and press against be. This column fixing member (7) is of the cylinder/piston type using pressurized fluid, the type using a booster mechanism using an electric motor as a motion source, or a device operated by manual rotation means, etc., for example. As shown in the figure, part of the column fixing member (7) is manually operated, and the inner end of the fixing screw (70) has a pressing piece (71) that presses against the outer surface of the steel column (A). ), and a handle (72) is provided at the outer end so that rotational movement can be imparted by the handle (72), and the column support frame (6
) A locking nut (7) is attached to the screw part that protrudes outward.
3) is screwed together. Any of the above-mentioned formats, including the manual format, does not satisfy these specific formats. All of these pillar fixing members (7) can be operated from the outside.

Furthermore, on the outside of the column support frame (6), there are a plurality of pieces, more specifically, at least two pieces located at a 90 degree angle, or at symmetrical positions in the same angular direction, or any number of pieces placed at an equal angle. The base end of the stay (8) is firmly fixed so as to be on a radial extension line, and the distal end thereof is equipped with an adjustment leg (9) 7 that acts in the vertical direction. 9) is
Basically, it has a motion source whose operation is equivalent to and of the same type as the column fixing member (7) described above, and these can be operated arbitrarily,
This allows the bottom end to be grounded.

The jig device (1) configured in this way attaches the anchor bolt (21) to the base at a position where the gap size set in the concrete layer (201h) is placed in the strongly leveled ground (G) with great precision. (2) is firmly fixed to the base body (2), but in this case, emphasis is placed on the load bearing of the base body (2) rather than the levelness of the installation.

The levelness of the installation is determined by adjusting the adjustment leg (9) provided at the tip of the stay (8) which projects outward from the steel frame support (3).

Regarding the upright precision of the steel frame support (3) and the steel frame column (A) inserted and fixed therein, the accuracy of the erection of the steel frame column (A)
Although it is oil-free to adjust using a pendant weight suspended from the top of the steel frame support ( 3
), fine adjustments are made while checking against the reference value (23) provided at the setting position.

In addition, even when the steel frame column (^) is installed non-vertically and obliquely, the desired angle can be measured using the same stay (
This is done by adjusting the angle in step 8).

In the installation work of these jigs* (+), the horizontality of the installation is adjusted using the adjustment leg (9) on the stay (8) as described above. In the stay (8), as mentioned above, the steel columns (^) raised by the plurality of jigs (1) are subjected to loads applied according to the load mechanics by the beam steel frames (B) that connect them. Only the stay (8) protruding in the direction corresponding to the direction acts, therefore, the stay (8) in an unnecessary direction acts.
Since these are not only useless, but also nothing more than a nuisance in some cases, they are used without the stay (8) provided in any direction other than the required direction.

〔Effect of the invention〕

Most high-rise or super-high-rise structures are constructed using stacked steel frames of the same shape. Therefore, the erection position of the steel frame columns should be regulated in the area adjacent to the structure, which can be called the original position. Since the same type of steel three-dimensional structures can be assembled into the ground using multiple installed jigs, it is possible to construct them with uniform accuracy, and this is especially effective for building three-dimensional steel structures of high-rise buildings that are made into blocks by ground assembly. This method is effective in significantly shortening the construction period because it can be used to repair steel frames that have already been erected during cargo handling.

[Brief explanation of the drawing]

Fig. 1 is a plan view of the jig device, Fig. 2 is a side view of the jig device, Fig. 3 is a partially enlarged plan view of the column fixing member in the column support frame and its vicinity, and Fig. 4 is the base and the column. A partially enlarged sectional view showing the connection configuration with the support frame, FIG.
Fig. 6 is a perspective view of a vertical frame constructed from assembled steel frames, and Fig. 7 shows a vertical frame constructed from assembled steel frames. It is a perspective view of a cubic frame structure. (1)...Jig device, (2)...Base, (3)...
Steel frame support, (4)...Load receiving member, (5)...Column support is the bottom plate, (6)...Column support frame, (7)...Column fixing member, (8)... Stay, (9)...adjustable leg body, (A
)...Steel column body, (B)...Steel frame for passenger cars, (G)...
ground.

Claims (1)

[Scope of Claims] [1] On the ground surface of the local ground adjacent to the construction site of the high-rise structure, according to the installation form of the steel frame column required within the construction setting range of the structure to be constructed on the construction site, In a position that complies with the installation form and accuracy of span dimensions, etc.
Firmly install multiple jig devices for steel column bodies, and
The lower end of the material that will become the steel column is engaged with each of the jigs and fixed, the steel column is erected vertically or at a set inclination using only the jig, and the erected steel column is A beam steel frame is fixed to the steel frame to enable a planar or planar vertical frame steel frame structure or cubic frame steel structure to be assembled by ground assembly, and the assembled steel three-dimensional structure is A method for assembling a three-dimensional steel structure, characterized in that it can be separated from a mounting device and transported to a desired position. [2] The base fixed on the set ground and the steel support to which the steel column is fixed are combined via a load receiving member, and the upper steel support is connected to the lower column support bottom plate and the steel column. The column support frame is formed of an annular column support frame having an inner hole into which the lower end can be inserted, and a column fixing member that can be tightened and loosened by moving forward and backward through the column support frame in the diametrical direction is operable from the outside. Further, a plurality of stays are provided radially projecting from the outer periphery of the column support frame on each extension line in the radial direction, and adjustment legs that can be freely adjusted in the vertical direction are provided at each tip of the stays. A jig device used in the underground assembly method of steel three-dimensional structures.