JPH021942B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a self-climbing device used for constructing long concrete outer walls such as buildings of electronic power plants and concrete tower-like structures such as high bridge piers.

For example, when constructing a long concrete exterior wall, conventionally, the bracket at the lower end of the column is removably attached to the already constructed part, and a sheath pipe that is fitted around the column and supported so as to be movable along the column. Attach the frames together to form a structure,
A so-called self-climbing device is known in which a formwork is attached to this frame and the frame is raised along an existing structure to sequentially build the structure upward.

By the way, this self-climbing device does not require scaffolding over the entire surface of the structure, so it not only eliminates all the time traditionally required for assembling or dismantling scaffolding, but is also cost-effective. be. It also has features such as high safety because work is performed on stable scaffolding.

However, in the case of conventional self-climbing devices, the bracket is supported by bolts on the existing wooden concrete structure, but when the load of the device is suddenly applied to the bolts when installing the bracket, This load acts as a shearing force and could break the bolts, so while gradually adjusting the height of the bolt holes in the bracket to the position of the wood concrete, attach the bolts to the wood concrete and fix the bracket to the existing part. There was a problem of poor work efficiency.

On the other hand, when the frame is raised,
The frame is raised while supporting the brackets and the frame at several places on the already constructed parts, but if this happens, the whole device may shake sideways, which poses a safety problem. It was hot.

Furthermore, in the past, since the formwork was supported by shoring, there was a problem in that assembling and demolding the formwork required manpower and was time-consuming.

This invention solves the above problems by installing a sub-bracket inside the bracket provided on the support, providing the frame with a drive means for pushing and pulling the formwork, and installing a slider that is attached to the already constructed part and guided by the guider. The purpose is to provide a self-climbing device that can improve workability and safety.

This invention will be explained in detail below based on the drawings.

1 to 7 show an embodiment of this invention, in which a self-climbing device A is attached to an already constructed part 1 of a long concrete outer wall. The self-climbing device A has a support column 2
A bracket 3 is integrally attached to the lower end of this support 2, a sub-bracket 4 is installed inside this bracket 3, and a sub-bracket 4 is movably fitted onto the outside of the support 2, for example, about 1/2 of the support 2. It consists of a sheath tube 5 set to a short length and a frame 6 attached to this sheath tube 5. A frame 7 consisting of the sheath pipe 5 and the frame 6 is configured to be able to rise along the outer wall of the structure.

As shown in FIGS. 2 to 4, the bracket 3 has a trapezoidal cross section, has a back surface in contact with the already constructed part 1, has an open front surface, and has the support column 2 on the top surface. The lower end is fixed together by welding or the like. A bolt insertion hole 8 is provided on the upper surface of the bracket 3 between the pre-assembled part 1 and the support column 2, and a nut 9 is fixed on the lower surface. A bolt 9a serving as an adjustment means having a sub-bracket 4 integrally attached to its lower end is screwed into the bolt insertion hole 8, so that the height of the sub-bracket 4 can be adjusted. The sub-bracket 4 has approximately the same external shape as the bracket 3, but is reduced in size to about 1/2 as a whole. The back surfaces of the bracket 3 and the sub-bracket 4 are in contact with each other, and support bolts 11 are provided on both left and right sides of the back surface.
A pair of holes 10 are respectively provided for inserting the holes. The support bolt 11 is screwed into the wooden concrete 12 of the already constructed part 1, with the pair of holes 10 of the bracket 3 and the sub-bracket 4 aligned with each other. Therefore, the load applied to the support column 2 is transferred from the bolt 9a to the support bolt 1 via the sub-bracket 4.
It is designed to hang over the root end of 1. Incidentally, the wood concrete 12 is attached to both sides of a separator 13 for keeping the distance between the inner formwork and the outer formwork constant. Furthermore, one end of a mounting member 14 for supporting the bracket 3 on the pre-assembled part 1 is attached to the upper surface of the bracket 3. The other end of this mounting member 14 is connected to the pre-assembled part 1
It is attached to a wooden bracket 12 or the like with a mounting bolt 15.

On the other hand, the sheath tube 5 is fitted onto the outside of the support column 2, and has insertion holes 5b in the upper and lower portions of which the lock pins 5a are inserted, communicating with the insertion holes of the support column 2. On the construction side of this sheath pipe 5, there is a formwork support bracket 17 that supports the formwork 16.
is provided almost at right angles to the sheath tube 5, but on the opposite side to the structure, a frame 6 is attached in an inverted triangular shape as described above. Above and below this frame 6, there are formworks 1 as shown in FIG.
6 to move parallel to the construct to remove the mold,
A drive means 18 such as a pair of hydraulic jacks for assembly is provided. Of course, this pair of driving means 18 is configured to be able to push and pull the formwork 16 in synchronization with each other. As shown in FIG. 5, an angle member 19 is attached to the tip of this drive means 18.
A washer 21 for holding the horizontal end piece 20 is attached to the inside of the holder. Thus, the horizontal edge 20 is in contact with one side of the formwork 16, and
A wooden bracket 22 is brought into contact with the other side, and a bolt 23 is inserted through the formwork 16 from the angle member 19 to the wooden bracket 22, and is tightened with a nut 23a. Further, as shown in FIG. 6, a pulley 16a is provided at the lower end of the formwork 16, and this pulley 16a reciprocates on a rail 17a of a formwork receiving bracket 17.

On the other hand, at the lower end of the sheath tube 5 on the construction side,
A mounting bracket 26 for mounting the slider 25 is provided. As shown in FIG. 7, this slider 25 moves up and down guided by a guider 24 with a U-shaped cross section that is attached to the wooden concrete 12 of the already constructed part 1, and prevents lateral wobbling etc. when the frame 7 is raised. It's becoming like that.

Note that a reinforcement scaffolding 27 is erected on the upper part of the frame 6, and a lower scaffolding 28 is provided on the lower part. When the lower scaffold 28 is raised, the scaffold 28a collides with the bracket 3, so the tip of the scaffold 28a can be folded back to avoid collision.

The reference numeral 29 is a chain block, and the reference numeral 30 is a channel-shaped column head jig.

Next, a construction method using the self-climbing device A according to the present invention will be explained based on FIG. 1 A to H.

FIG. 1A shows the state after the self-climbing device A is attached to the already constructed part 1 and concrete is poured. In the figure, this device A is attached only to one side of the structure, but in reality, this device A is attached to both sides of the structure, and these devices A are suspended by, for example, a crane.

Therefore, in order to attach this device A to the already constructed part 1, as shown in FIG. Screw the support bolt 11 on. At this time, adjust the height of the sub-bracket 4 with the bolt 9a, and insert the support bolt 1 into the inner circumference of the hole 10 of the sub-bracket 4 in advance.
1, the load of the device A will not be suddenly applied as a shearing force to the root end of the support bolt 11, so the support bolt 11 will not break. Therefore, in order to prevent the load of the device A from suddenly being applied to the support bolt 11 as in the conventional case,
The work of gradually applying the load to the support bolt 11 while finely adjusting the height of the entire device A can be omitted.

In addition, since the mounting member 14 on the top surface of the bracket 3 is attached to the wooden concrete 12 of the existing part 1 with the mounting bolt 15, and the formwork 16 is fixed at the top, this self-liming device A
It can be attached to the pre-built part 1 in a stable state. In this state, the lock pin 5a is inserted into the upper insertion hole 5b of the sheath tube 5, and the load of the device A is transferred to the support column 2.
flow to.

After concrete is poured as described above and curing is completed, the formwork 16 is removed from the already constructed part 1, as shown in FIG. 1B. To remove the mold, the mold 16 may be moved in parallel to the apparatus A side by the driving means 18. In that case, the pulley 16a provided at the lower end of the formwork 16 moves on the rails 17a, so that the formwork 16 can be smoothly moved.
When the outward movement of the formwork 16 is completed, a column head jig 30 is hung horizontally on the heads of the pair of columns 2, a chain block is attached to the frame 7 from this jig 30, and the bracket 3 is turned. The frame 7 is lifted up as a force. Note that the lock pin 5a is removed from the sheath pipe 5 in advance.
Remove it.

After lifting the frame 7, as shown in FIG. It is guided into the guider 24 (FIG. 7). Therefore, even when the frame 7 is raised, the slider 25 is guided within the guider 24, so the apparatus A is safe without being shaken sideways or falling over. Incidentally, the outer surface of the already constructed part 1 is repaired in this state on the lower scaffolding 28, and the upper reinforcement is arranged from above the reinforcing scaffolding 27. Note that the lock pin 5a is driven into the lower insertion hole 5b of the sheath tube 5.

Next, as shown in FIG. 1D, the driving means 18 is operated to set the formwork 16. Of course, this formwork 16 is connected to the internal formwork by the separator 13. After completing the setting of the formwork 16, the guider 24 is removed from the already constructed part 1, and the slider 25 is also removed. Next, the chain block 29 is set from the lower end of the frame 7 and attached to the bracket 3. Also, along with this work, the sheath pipe 5
Remove lock pin 5a from.

In this state, operate the chain block 29,
Pull up the bracket 3 and sub-bracket 4 to the top. Of course, before pulling up the bracket 3, it is necessary to remove the support bolt 11 and the mounting bolt 15 from the already constructed part 1. As shown in Fig. 1E, the bracket 3 and sub bracket 4
After pulling them up, attach them to the top wooden conduit 12 of the pre-assembled section 1, and attach them to the lock pin 5.
a into the upper insertion hole 5b of the sheath tube 5, and remove the chain block 29 from the bracket 3. Next, concrete may be poured into the set formwork 16.

Note that the clamping fittings for the formwork 16 are not limited to those shown in FIG. 5, but may be, for example, those shown in FIG. 8.

As explained above, the present invention incorporates a sub-bracket in the bracket provided at the lower end of the support column,
Since the height of this sub-bracket can be adjusted, if the sub-bracket is brought into contact with the support bolt in advance, the load of the self-climbing device will not be applied suddenly to the support bolt, and the support bolt will break. There is no fear. Furthermore, since there is no need to finely adjust the height of the bracket relative to the already constructed part, the installation work can be quickly carried out by a small number of people. Furthermore, when the frame is raised, the slider is guided by a guider attached to an already constructed part, so the frame does not sway or fall, increasing safety. Furthermore, since the frame is provided with a drive means for pushing and pulling the formwork, it has excellent effects such as rapid demolding and assembly of the formwork.

[Brief explanation of drawings]

Figures 1 to 7 show one embodiment of the present invention, and Figure 1 A to E are schematic diagrams showing the process of raising the self-climbing device, and Figure 2 is a sectional view showing the mounting state of the bracket. , FIG. 3 is a cross-sectional view thereof, FIG. 4 is a front view, FIG. 5 is a sectional view showing the state in which the drive means and the formwork are connected, and FIG. 6 is a side view of the state in which the pulley is attached to the formwork. FIG. 7 is a cross-sectional view of the guider, and FIG. 8 is a modification of the formwork clamping fitting. A... Self-climbing device, 1... Existing part, 2... Support, 3... Bracket, 4... Sub-bracket, 5... Sheath pipe, 6... Frame, 7...
Frame, 9a... Bolt, 16... Formwork, 18...
Driving means, 24... guider, 25... slider.

Claims (1)

[Claims] 1. Comprising a column 2 with a bracket 3 at the lower end, and a frame 7 in which a frame 6 is integrally attached to a sheath tube 5 that is fitted onto the column and supported movably along the column, The bracket is removably attached to the already constructed part 1, and the formwork 16 is
In the self-climbing device for construction, the structure is moved upward to sequentially build the structure upward, and the sub-bracket 4 is installed inside the bracket via an adjusting means for adjusting the height of the structure. A drive means for pushing and pulling the formwork is provided, and a guider 24 is detachably attached to the already constructed part, and a slider 25 that moves up and down guided by this guider is attached to the lower part of the sheath pipe. A self-climbing device for construction that is characterized by: