JPH0748751Y2 - Structural pillar construction auxiliary jig and its attachment - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention is a structural column (a steel column for a permanent installation on the basement floor used as a column when constructing an underground skeleton by the reverse construction method).
It relates to a construction aid jig and its attachment.

[Conventional technology]

Generally, when building a structure column on the top of a cast-in-place pile with its lower end being rooted in the concrete of the cast-in-place pile, if the upper end of the cast-in-place column protrudes from the ground, running of heavy machinery and other Since it will be an obstacle to construction, set the upper level of the structure pillar to be flush with the ground or lower than the ground, and build with the auxiliary jig added to the upper end of the structure pillar. In many cases, the auxiliary jig is removed after backfilling the circumference of the pillar with earth and sand.

Conventionally, a steel frame having the same cross-sectional shape as the structure column is used as this auxiliary jig for erection of the structure column, and it is welded to the joint plate protruding on the outer surface of the flange of the steel frame and the outer surface of the flange of the structure column. The joining plate (which is used for fixing the temporary beam and temporarily fixing the main beam when constructing the steel frame, and is cut off after use) was configured to be bolted.

[Problems to be solved by the device]

The cross-sectional shape of the true column is usually different at the corners and middle parts of the building, and there are many types of cross-sectional shapes even at one construction site. Therefore, in the above-mentioned conventional example, the auxiliary jig also requires several kinds of jigs that match the cross-sectional shape of the true column, which results in high cost and many kinds.
A wide stockyard was required, and work such as replacement of auxiliary jigs was complicated.

In view of the above-mentioned conventional drawbacks, the present invention is intended to provide a general-purpose true-column constructing auxiliary jig that can be used for true-columns having different cross-sectional shapes.

Another object of the present invention is to provide a versatile construction-supporting jig that can be used regardless of the length of the construction pillar.

Another object of the present invention is to provide an attachment in which a single true-column supporting auxiliary jig can be used regardless of the thickness or length of the true-column.

[Means for Solving the Problems]

The technical means taken by the present invention to achieve the above object are as follows. That is, in the auxiliary column erection jig according to the present invention, a plurality of mounting portions are provided on the four peripheral surfaces of the columnar member having a square cross section in the vicinity of the lower end, and these mounting portions are attached to the outside of the flange of the true column. A joint plate for connecting with a joint plate protruding on the side surface is selectively attachable, and a bracket for level adjustment is protruded in the vicinity of the upper end of the columnar member, and a hanging metal fitting is provided on the upper end. It is made by mounting.

The columnar member may have a constant length,
If the columnar member is composed of an upper member and a lower member configured to be relatively movable in the axial direction, and a length adjusting mechanism provided between the upper member and the lower member, the versatility is further enhanced. You can

In addition, if some of the true columns to be built using the auxiliary jig have a sectional shape in which the position of the center of gravity does not change due to the difference in sectional shape, the hanging metal fitting is fixed to the columnar member. It may be provided in. When the position of the center of gravity of the true column changes depending on the cross-sectional shape, this can be dealt with by making it possible to change the attachment position of the hanging metal fitting to the upper end of the columnar member according to the position of the center of gravity of the true column.

In addition, the attachment for a true-column construction assisting jig according to the present invention is provided with a plurality of mounting portions on the four peripheral surfaces in the vicinity of the upper end of the attachment body having a square cross section, and these mounting portions are provided with the true-column supporting means. The attachment plate is configured to be selectively attachable to the joint plates attached to the four peripheral surfaces near the lower end of the building assistance jig, and a plurality of mounting portions are provided on the four peripheral surfaces near the lower end of the attachment body. Is provided, and a joint plate for connecting with a joint plate protruding from the outer surface of the flange of the true column can be selectively attached to these mounting portions.

[Action]

According to the above configuration, by selecting the attachment portion of the joining plate provided on the columnar member of the auxiliary jig according to the cross-sectional shape of the true post, the auxiliary jig can be applied to the true post having different cross-sectional shapes. Can be added.

When the columnar member of the auxiliary jig is composed of an upper member and a lower member that are configured to be relatively movable in the axial direction, and a length adjusting mechanism provided between the upper member and the lower member, The length of the auxiliary jig can be adjusted according to the length of the true column, the level of the surplus concrete in the cast-in-place pile, the height of the gantry in the centering device for the true column, and the like.

In addition, by adding or removing the above attachments under the auxiliary jig, the substantial length of the auxiliary jig can be changed, and the actual length of the auxiliary jig can be changed according to the thickness of the true post. The thickness can be changed.

〔Example〕

 Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows an auxiliary jig A for constructing a true column according to the present invention.
In the figure, reference numeral 1 denotes a hollow columnar member having a square cross section, and a plurality of mounting portions 2 formed by through holes or screw holes for bolt insertion are provided on four peripheral surfaces in the vicinity of a lower end thereof. There is. A joint plate 4 for connecting to a joint plate 3a projecting from the outer surface of the flange of the true-column 3 can be selectively bolted to the mounting portions 2. In this embodiment, the nut is screwed to the inner end side of the bolt 5, but the nut may be welded to the inner surface of the columnar member 1 in advance.

A hanging metal fitting 6 is attached to the upper end of the columnar member 1. The hanging metal fitting 6 includes a vertical plate portion 6a located at the center (position of the center of gravity) of the upper end surface of the columnar member 1, a mounting plate portion 6b continuously provided at the lower end thereof, and a reinforcing rib 6c continuously provided therebetween. And two holes 7a and 7b are formed symmetrically in the longitudinal direction in the vertical plate portion 6a, and the holes 7a and 7b are formed by a wire 8.
It is configured to be hung at two points via hooks, shackles, etc. that are locked to b. The wire 8 is a pulley 10 which is rotatable around a support shaft 9 perpendicular to the longitudinal direction of the vertical plate portion 6a.
It is configured to be suspended and supported via.

Further, in the vicinity of the upper end of the columnar member 1, brackets 11 for level adjustment are projectingly provided on two parallel side surfaces located in the longitudinal direction of the vertical plate portion 6a.

It is desirable that the columnar member 1 has a hollow structure as shown in FIG. 2 in order to reduce the weight of the auxiliary jig A, but this is not an essential structure. In the illustrated embodiment, screw holes 12 are formed on the two side surfaces of the columnar member 1 by welding nuts or the like in a plurality of upper and lower stages, and the mounting positions of the brackets 11 are changed vertically by bolts 13 that are screwed into the screw holes. Although it is possible, the brackets 11 ... May be fixedly provided by welding or the like. In the illustrated embodiment, the brackets 11 ...
Although two are provided on one side surface, one may be provided at a position that matches the extension line of the vertical plate portion 6a in plan view. Reference numeral 14 denotes a connecting plate that connects the joining plates 3a and 4 to each other, 15a ... a connecting bolt, and 15b ... a nut screwed to the connecting bolt.

According to the above configuration, the columnar member 1 of the auxiliary jig A has a square cross section (outer shape), and the joining plate 4 can be selectively attached to the plurality of attachment portions 2 ... As shown in FIGS. (A) to (D) and FIGS. 4 (A) and (B), the mounting portions 2 of the joining plate 4 are appropriately selected even in the case of the structured columns 3 having different cross-sectional shapes. As a result, it is possible to match the positions of the joint plate 3a protrudingly provided on the outer surface of the flange of the true post 3 and the joint plate 4, and to connect the both.

Next, the work of constructing the true post 3 using the auxiliary jig A will be described.

First, as described above, the attachment position of the joining plate 4 on the auxiliary jig A side is adjusted according to the cross-sectional shape of the true column 3, and
As shown in Figures (a) and (b), the true post 3 and the auxiliary jig A
While connecting 3 and A in the state where is placed horizontally on the ground,
Attach the hanging bracket 6 and the bracket 11 ...

Then, the wire 8 portion is lifted up via the pulley 10 with a crane or the like. In this case, the hanging metal fitting 6 is hung by the wire 8 at two points, that is, the two positions of the vertical plate portion 6a aligned with the position of the center of gravity of one side are hung by the wire 8, and the wire 8 is hung at the two points. Since it is rotatably supported by the pulley 10 around the support shaft 9 which is perpendicular to the direction, the auxiliary jig A and the false column 3 are in a vertical state by their own weight.

On the other hand, as shown in FIG. 6 (a), on the ground (abrasive concrete) above the cast-in-place pile 16, the centering device for the true post 3 is placed.
The pedestal 18 of 17 is installed and the above-mentioned structure pillar 3 is suspended in a pile hole. Further, the auxiliary jig A has a pedestal at the joint with the true column 3.
At the time when it is lowered below the upper surface of 18, the two guide frames 19, 19 parallel to each other are installed at a predetermined position on the upper surface of the pedestal 18 with the columnar member 1 of the auxiliary jig A sandwiched therebetween. Two guide frames 20, 20 perpendicular to the guide frames 19, 19 are installed on the upper surface with the columnar member 1 sandwiched therebetween, and jacks 21, 21 are further installed on the upper surface thereof. In this state, the lower end of構真pillar 3 is located above the top end of the weld reinforcement concrete C _1, vertical posture by its own weight are aware that this is not derailed by weld reinforcement concrete C _1.

After that, while performing the centering of the true-position column 3 with the guide frames 19, 19, 20, 20, the true-line column 3 is further lowered into the pile hole, as shown in FIG. The lower end of the true column 3 is inserted into the pile concrete C ₂ . In this case, the side surface of the columnar member 1 wider than the flange of the true column 3 is the guide frame 1
The sliding contact with 9,19,20,20 enables accurate centering of the true post 3. Next, the brackets 11 are supported by the jacks 21 and 21, and the jacks 21 and 21 adjust the level of the top end of the structure post 3.

In this state, the pile holes are backfilled with earth and sand, and the centering device 17 and the auxiliary jig A are removed.

FIG. 7 shows another embodiment of the present invention. This embodiment is characterized in that the attachment position of the hanging metal fitting 6 to the columnar member 1 of the auxiliary jig A can be changed according to the center of gravity of the true column. That is, a plurality of screw holes 22 for bolt-connecting the hanging metal fitting 6 are provided at predetermined positions on the upper end surface of the columnar member 1, and the hanging metal fitting 6 is provided in accordance with the cross-sectional shape of the true column 3. The mounting position of is adjusted.

In the illustrated embodiment, the mounting positions of the pair of brackets 11 and 11 are configured to be changed according to the mounting position of the hanging metal fitting 6. However, as in the previous embodiment, the embodiment shown in FIG. As in the example, four brackets may be fixedly provided.

FIG. 8 shows another embodiment of the present invention. In this embodiment, an upper member that fits the columnar member 1 so as to be relatively movable in the axial direction.
1A and lower member 1B, and these upper member 1A and lower member 1B
It is characterized in that it is configured by a length adjusting mechanism 1C composed of a hydraulic cylinder device and the like installed between.

According to this embodiment, since the length of the auxiliary jig A can be adjusted, the auxiliary jig A can be used regardless of the length of the true post 3. That is, in order to erected the true post 3 in a vertical posture by its own weight, the lower end of the true post 3 is left over when the joint between the auxiliary jig A and the true post 3 is lower than the upper surface of the pedestal 17. It is necessary not to touch the fill concrete C ₁ , but if the length of the auxiliary jig A is constant, such a condition may be satisfied depending on the height of the gantry 17 and the length of the structure post 3. Sometimes there is not. In such a case, in this embodiment, by shortening the length of the auxiliary jig A, the lower end of the false post 3 can be positioned above the surplus concrete C ₁ . Other configurations and operations are the same as those of the previous embodiment.

FIG. 9 shows an attachment B for an auxiliary jig according to the present invention. This attachment B is provided with a plurality of mounting portions 24 including screw holes or the like on four peripheral surfaces in the vicinity of the upper end of the attachment body 23 having a square cross section of the same size as the columnar member 1 of the auxiliary jig A. The attachment plates 24 of the auxiliary jig A can be selectively attached with the joining plates 25 for connecting to the joining plates 4 attached to the four peripheral surfaces in the vicinity of the lower end of the auxiliary jig A. A plurality of mounting portions 26, each including a screw hole, etc., are provided on the four peripheral surfaces near the lower end of the joint, and these mounting portions 26 ... Are connected to the joint plates 3a. The joining plates 27 for ... are selectively attachable. 28 ... is a connecting plate, 29a ...
Is a connecting bolt, 29b ... is a nut.

According to this embodiment, the substantial length l ₁ of the auxiliary jig A can be changed by adding or removing the attachment B above the auxiliary jig A.

10 and 11 show another embodiment of the present invention. This embodiment is characterized in that the thickness of the attachment main body 23 (dimension of square in cross section) is different from that of the auxiliary jig A. According to this embodiment, the attachment main body 23 is used or not used, and the attachment main body 23 is replaced with another attachment main body 23 having a different thickness. The l ₂ can be changed.

[Effect of device]

Since the present invention has the above-mentioned configuration, the following effects can be obtained.

That is, by selecting the attachment position of the joining plate with respect to the auxiliary jig according to the sectional shape of the true column, the joining plate on the auxiliary jig side and the joining plate on the true column side can be matched. Auxiliary jigs can be added to the true columns of different shapes.

Therefore, it becomes a versatile auxiliary jig, which is more economical than preparing and using several types of auxiliary jigs.
It does not require a large stockyard and simplifies the work.

According to claim (2), the length of the auxiliary jig is adjusted in accordance with the length of the true post, the level of the surplus concrete in the cast-in-place pile, the height of the base of the true post centering device, etc. It is possible to obtain more versatility.

According to claim (3), even if the position of the center of gravity of the true column changes depending on the cross-sectional shape, this can be dealt with by changing the mounting position of the hanging metal fitting to the upper end of the columnar member, and It can take a vertical position by its own weight.

According to claim (4), the substantial length and / or thickness of the auxiliary jig can be changed by adding or removing the above attachment under the auxiliary jig, and the reference dimension The auxiliary jig manufactured in 1 above can be used for various true columns.

[Brief description of drawings]

1 shows an embodiment of the present invention, FIG. 1 is an exploded perspective view of an auxiliary jig for arranging a true column, FIG. 2 is a cross sectional view of the auxiliary jig, and FIGS. 3 (a) to 3 (d). Is a cross-sectional view showing the relationship between the sectional shape of the true column and the auxiliary jig, and FIGS. 4 (a) and 4 (b) show the relationship between the sectional shape of the true column and the joining plate attached to the auxiliary jig. The side view shown in FIGS. 5 (a) and 5 (b) is a schematic side view for explaining the attachment work of the auxiliary jig, FIG. 6 (a),
(B) is a schematic longitudinal cross-sectional view for explaining the work of installing the true column. FIG. 7 is a plan view of an auxiliary jig showing another embodiment of the present invention. FIG. 8 is an exploded perspective view showing a part of an auxiliary jig according to another embodiment of the present invention. 9 and 10 are side views of an auxiliary jig with an attachment showing another embodiment of the present invention, and FIG. 11 is an exploded perspective view of the attachment shown in FIG. A ... Auxiliary jig, B ... Attachment, 1 ... Column member, 1A ... Upper member, 1B ... Lower member, 1C ... Length adjustment mechanism, 2 ... Mounting part, 3 ... Truth Pillar, 3a …… Joining plate, 4 …… Joining plate, 6 …… Suspension fitting, 11 …… Bracket, 23 …… Attachment body, 24 …… Mounting part, 25 …… Joining plate, 26 …… Mounting part, 27 …… Bonding plate.

Claims (4)

[Scope of utility model registration request] 1. A plurality of mounting portions are provided on four peripheral surfaces near a lower end of a columnar member having a square cross section, and these mounting portions are connected to a joint plate projecting on an outer surface of a flange of a true column. The construction plate is configured so that it can be selectively attached, and a bracket for level adjustment is projected from the vicinity of the upper end of the columnar member, and a hanging metal fitting is attached to the upper end of the columnar structure auxiliary repair jig. Ingredient 2. The columnar member is composed of an upper member and a lower member configured to be relatively movable in the axial direction, and a length adjusting mechanism mounted between the upper member and the lower member. The auxiliary pillar erection jig according to claim (1). 3. The true-post pillar construction according to claim 1, wherein the mounting position of the suspension fitting with respect to the upper end of the columnar member is changeable in accordance with the position of the center of gravity of the true-post pillar. Auxiliary jig. 4. An attachment main body having a square cross section is provided with a plurality of mounting portions on the four peripheral surfaces in the vicinity of the upper end, and these mounting portions are provided on the four peripheral surfaces in the vicinity of the lower end of the true-column supporting jig. A joint plate for connecting to the attached joint plate is configured to be selectively attachable, and a plurality of attaching portions are provided on the four peripheral surfaces in the vicinity of the lower end of the attachment body, and these attaching portions are provided with a true column. An attachment formed by selectively attaching a joint plate for connecting with a joint plate protrudingly provided on the outer surface of the flange.