JP3254039B2 - Jack-up building equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a jack-up type building construction apparatus used for building a building or the like.

[0002]

2. Description of the Related Art Conventionally, as a construction method for a high-rise building, there has been proposed a construction method in which a jack-up type frame which is gradually raised with the construction of a building is constructed one by one from a lower floor. I have.

[0003] A jack-up type building construction apparatus used in this type of construction method comprises a frame having a plurality of hydraulic jack cylinders movable vertically with respect to the structure of the building. Of the top floor of the building, and supported by hydraulic jack cylinders via a plurality of masts (temporary supports) erected on the structure. After the first floor is constructed, each hydraulic jack cylinder is synchronized By extending and raising the frame, the top floor is raised and the lower floors are built sequentially.

[0004]

However, in the above-mentioned conventional apparatus, the respective hydraulic jack cylinders are synchronized and controlled by a servo mechanism or the like in order to raise the frame synchronously. However, as shown in FIG. When the structural pillars 11 constituting the building are successively added, the level of each mast 2A to 2D is relatively displaced due to a difference in dimensional accuracy, etc., and the level of the frame 1 is not uniform, giving stress to the structure. When the frame 1 is raised, the load due to deflection concentrates on the hydraulic jack cylinder 3C that supports the mast 2C projecting most upward, so that the hydraulic pressure of the hydraulic jack cylinder 3C abnormally increases or the discharge pressure of a pump (not shown) Tune control may not be performed smoothly due to insufficient hydraulic pressure.

In order to correct the level of the frame 1, it is necessary to perform surveying to determine the level adjustment amount, and this surveying operation requires a great deal of labor, which reduces the efficiency of the operation. was there.

Accordingly, an object of the present invention is to provide a jack-up type building construction apparatus capable of preventing an excessive load from being applied to a hydraulic jack cylinder and maintaining a uniform frame level.

[0007]

The present invention is shown in FIGS.
As shown, a frame is provided at the top of a building under construction, a plurality of masts connected to the structure of the building, and a plurality of hydraulic jack cylinders for vertically displacing the frame via each mast. In a jack-up type building building apparatus, means for detecting the hydraulic pressure of each hydraulic jack cylinder, means for calculating the load applied to the hydraulic jack cylinder from the detected value of the hydraulic pressure, and a load set in advance based on the calculation result. Means for judging the hydraulic jack cylinder which has exceeded, control means for driving the hydraulic jack cylinder in the descending direction of the frame based on the judgment result so as to have the set load, and each of the hydraulic jack cylinders
Means for detecting the stroke amount of the
When calculating the load of the hydraulic jack cylinder,
Move each hydraulic jack cylinder in the upward direction of the frame.
It is configured to periodically make a stroke by a predetermined amount .

[0008]

Further, according to a third aspect of the present invention, as shown in FIG.
When the load is calculated, each hydraulic jack cylinder 3 is synchronously stroked in the upward direction of the frame 1 by a predetermined amount.

[0010]

Accordingly, the hydraulic jack cylinder 3 for supporting the frame 1 disposed above the building via the mast 2
Mast 2 projecting above the standard level
Since the load applied to the hydraulic jack cylinder 3 is increased, the load of the hydraulic jack cylinder 3 is calculated from the detection value of the hydraulic pressure detecting means 50, and the calculation result is compared with a preset load. Jack cylinder 3
Is driven in the lowering direction of the frame 1 to prevent an excessive load from being applied to the hydraulic jack cylinder 3, whereby a smooth tuning drive can be performed while keeping the level of the frame 1 uniform.

[0011]

Further, based on the detection value of the stroke amount detecting means 54, each hydraulic jack cylinder 3 is synchronously driven to a predetermined stroke in the ascending direction of the frame 1 and then the load applied to each hydraulic jack cylinder 3 is reduced. Since the calculation is performed, the calculation of the load can be performed accurately.

[0013]

3 to 5 show an embodiment of the present invention.

As shown in FIGS. 4 and 5, a frame 1 constituting a jack-up type building construction apparatus is attached to a ceiling beam 10 on the top floor of a building under construction, and is not shown above the ceiling beam 10. The work space is equipped with a roof to prevent rain and other intrusions.

A plurality of horizontally movable cranes (not shown) are provided below the frame 1 so that building materials and the like can be lifted from the outside onto the already completed lower floor 12 and transported.

The frame 1 and the ceiling beam 10 are supported by a mast 2A as a temporary pillar erected at the upper end of the already completed structural pillar 11 on the lower floor, and this mast 2A is a building as shown in FIG. For example, four masts 2 </ b> A to 2 </ b> D are erected on a predetermined structural column 11 with respect to one side.

Each mast 2A is located at a predetermined position on the frame 1.
A pair of hydraulic jack cylinders 3A to 3D are provided for raising or lowering the hydraulic masts 2A to 2D at the other ends of the hydraulic jack cylinders 3A to 3D whose base ends are connected to the ceiling beam 10. Sleeve 33 that can be displaced relative to
A to D are connected, and the hydraulic jack cylinders 3 </ b> A to 3 </ b> D are driven synchronously, whereby the frame 1 can be translated upward.

As shown in FIG. 4, a parallel movement of the frame 1 through a sleeve 33A connected to the mast 2A via a lock pin 31 and a guide roller 34 for guiding the frame 1 vertically with respect to the mast 2A. Is performed.

The sleeve 33A is slidably inserted through the mast 2A, and is supported by hydraulic jack cylinders 3A, 3A attached to the ceiling beam 10. Mast 2A
Are provided with fitting holes 25 at predetermined intervals.
The mast 2A and the hydraulic jack cylinder 3A are connected via the sleeve 33A by fitting the lock pin 31 into which the A is inserted into the fitting hole 25.

At a predetermined position facing the mast 2A of the ceiling beam 10 constituting the upper part of the frame 1, a fitting hole 15 for locking the lock pin 32 is formed, and the fitting hole 2 of the mast 2A is formed.
The mast 2A and the ceiling beam 10, ie, the frame 1
And concatenate. The lock pins 31 and 32 are detachably formed, respectively, and can support the lower part or the upper part (the ceiling beam 10) of the frame 1, respectively.

The other masts 2B to 2D have the same configuration.

The parallel movement of the frame 1 in the vertical direction will be described more simply with reference to FIGS. 4A to 4C.
As shown in (A), the lock pin 31 inserted through the sleeve 33A is locked in the fitting hole 25, while the lock pin 32 is locked.
The mast 2A is raised by contracting the hydraulic jack cylinder 3A at a predetermined stroke in a state in which is removed.

Thereafter, the fitting hole 2 of the raised mast 2A is
5 is locked in the fitting hole 15 and then the lock pin 31 is removed to remove the hydraulic jack cylinder 3.
A is extended to move the sleeve 33A to the lower fitting hole 25, and then the lock pin 31 is again moved to the sleeve 33A.
And then locked in the fitting hole 25. The mast 2A is raised to a predetermined height by repeating the above operation in synchronization with the hydraulic jack cylinders 33A to 33D.

Next, as shown in FIG. 4B, a new structural column 11A is inserted between the raised mast 2A and the already completed structural column 11. During this time, the frame 1 is supported by the other masts 2B to 2D.

After inserting the new structural column 11A, FIG.
As shown in (C), the frame 1 is further raised by extension and contraction of the hydraulic jack cylinder 3A and attachment / detachment of the lock pins 31 and 32, in contrast to the above (A). Start construction. in this way,
By repeating (A) to (C) of FIG. 4, the frame 1 provided on the top floor is raised while the construction of each floor is sequentially performed.

FIG. 3 shows a pair of hydraulic jack cylinders 3A.
(The same applies to 3B to 3D.) Shows a hydraulic circuit for supplying hydraulic oil and a control circuit thereof.

Hydraulic oil from the hydraulic pressure source 7 is sent through the solenoid valve 6 to the hydraulic chambers 30A and 30B of the hydraulic jack cylinder 3A. A hydraulic pressure sensor 4 for detecting hydraulic pressure is provided in a pipeline for supplying hydraulic oil, while a stroke sensor 5 for detecting a stroke amount of a piston rod is provided in the hydraulic jack cylinder 3A. Is a pair of hydraulic jack cylinders 3
A, 3A.

The outputs of these sensors are input to a computing unit 21 of a control unit 20 composed of a microcomputer or the like, and the output of the hydraulic sensor 4 is used to calculate the hydraulic jack cylinder 3A.
Calculate the load applied to the
, The displacement of the hydraulic jack cylinders 3A to 3D (that is, the displacement of the masts 2A to 2D) is calculated. In addition,
Although the hydraulic pressure sensors 4 and 4 are provided in the oil chambers 30A and 30B, respectively, they may be provided only in the oil chamber (for example, the oil chamber 30A side) that is pressurized at least when the frame 1 is raised.

The control of the hydraulic jack cylinder 3A is performed via a solenoid valve driving unit 22 of the control unit 20, and a control unit 21
The driving is performed as described later based on the driving command based on the load and the displacement amount calculated in the above, or the hydraulic jack cylinder 3A is driven by opening and closing the electromagnetic valve 6 based on the data input from the operation unit 24. be able to. The display device 23 displays the calculation result of the calculation unit 21 or the input data from the operation unit 24.

The controller 20 detects the relative displacement difference between the masts 2A to 2D from the load applied to the hydraulic jack cylinders 3A to 3D, and determines the hydraulic jack cylinders 3A to 3D whose detected values exceed a predetermined range. , The hydraulic jack cylinders 3A to 3D are contracted or extended to drive the mast 2
The frame 1 is sequentially raised while keeping the levels of A to D, that is, the level of the frame 1 uniformly.

When calculating the load, the controller 2
0 drives the hydraulic jack cylinders 3A to 3D synchronously to raise the frame 1 to a predetermined height in advance, that is, to extend and drive the hydraulic jack cylinders 3A to 3D to a predetermined stroke. Since the load is calculated based on the detection values of the hydraulic sensors 4 to 4D, the loads applied to the hydraulic jack cylinders 3A to 3D are accurately measured, and then the hydraulic jack cylinders 3A to 3D are set within a predetermined load range. It is possible to display the correction amount of the levels of the masts 2A to 2D, that is, the correction amount of the level of the frame 1 on the display device 23 based on the detection value of the stroke sensor 5 at this time.

Referring to the flowcharts shown in FIGS. 6 and 7, the operation of the control device 20 for measuring the loads on the hydraulic jack cylinders 3A to 3D (ie, measuring the levels of the masts 2A to 2D) and adjusting the loads will be described in detail. I do.

In order to measure the load on the hydraulic jack cylinders 3A to 3D disposed on one side of the frame 1, first, all the hydraulic jack cylinders 3A to 3D disposed on the frame 1 are measured.
A to D are moved by a predetermined amount in the ascending direction of the frame 1, for example, 10 m
The extension is driven by m (step S1). In this state, the frame 1 is supported only by the hydraulic jack cylinders 3A to 3D, and can accurately measure the load without being restricted by the building structure or the masts 2A to 2D.

At this time, the frame 1 is supported by the hydraulic jack cylinders 3A to 3D via the lock pins 31 and the sleeves 33A to 33D shown in FIGS. The frame 1 can be displaced relative to the masts 2A to 2D by removing the lock pin 32 from 15.

When the hydraulic jack cylinders 3A to 3D reach a predetermined stroke amount (10 mm), the solenoid valve 6 is closed to support the frame 1, and the detection values of the respective hydraulic sensors at this time are read (step S2). A load F is calculated from these oil pressures and the known inner diameters of the hydraulic jack cylinders 3A to 3D (step S3).

Here, the level of each mast 2A to 2D is shown in FIG.
In the case of equality as shown in the above, the load F applied to one mast 2A is F = W / 4, and a load of F / 2 is applied to the hydraulic jack cylinders 3A, 3A.

However, when the frame 1 is sequentially raised and the structural columns 11 are added, the level of the frame 1 may become non-uniform as shown in FIG. resultant force of the load of the hydraulic jacking cylinders 3A~D calculated in step S3, i.e. the load F applied to the mast 2A~D is a value indicated by a ₁ to D ₁ of the display contents of the display device 23 of FIG. In addition, mast 2A-D
Correspond to A _{1 to} D ₁ , while A _{6 to} D ₆ indicate the load of a mast (not shown) arranged on the other side of the frame 1.

The load F of A _{1 to} D ₁ calculated by the calculation unit 21
Performing the calculation of the load balance by in determining the average load F ₀ of the mast 2A~D based on each load F mast 2A~D represented. The average load F ₀ is calculated by, for example, a simple average, and the minimum load α and the maximum load β obtained by multiplying the average load F ₀ by a predetermined ratio are calculated (step S4).

The minimum load α and the maximum load β are sequentially compared with the loads F of the masts 2A to 2D, and the load F becomes the minimum load α
If the load F is less than the maximum load β and less than the maximum load β, the process proceeds to step S15. If the load F is not within the above range, the process proceeds to step S6 (step S5).

In step S6, the maximum load β is determined in order to determine the direction in which the masts 2A to 2D are to be corrected beyond the predetermined range.
Compare with.

[0041] For example downward direction in FIG. 8, (C ₁ load F in FIG. 9) is greater if the hydraulic jacking cylinders 3C contraction direction than the maximum load β load F mast 2C protruding upward in FIG. 9, i.e. frame 1 The change in the load is calculated from the output of the oil pressure sensor 4 while being driven, and the contraction drive is performed until the load becomes less than the maximum load β, and then stopped (step S
7, S8, S11). During this time, the mast 2 of the display device 23
Hydraulic jacking cylinders 3C the position of the C ₁ corresponding to the C
“▽” indicating the contraction of is displayed.

On the other hand, when the load F is equal to or less than the maximum load β, that is, when the load F is equal to or less than the minimum load α in the determination in step S6, the hydraulic jack cylinders 3A to 3D are extended, that is, driven in the upward direction of the frame 1, and Similarly, while calculating the load, the drive is extended until the load exceeds the minimum load α and then stopped (steps S9, S10, S11). During this time, “△” indicating extension is displayed on the display device 23 at the positions A _{1 to} D ₁ of the corresponding masts 2A to 2D.

The masts 2A to 2D and the hydraulic jack cylinders 3A to 3D adjusted to a predetermined load range in this way calculate the displacement due to contraction or extension based on the stroke sensor 5, and displace the displacement S to a predetermined position on the display device 23. Is displayed (steps S12 to S14). This displacement S is a correction amount of the level of the masts 2A to 2D.

In this way, when the adjustment of the load and the level has been completed for all the hydraulic jack cylinders 3A to 3D, the process proceeds to the step S16. Return to (Step S15).

When all the adjustment processes are completed, the display contents of the display device 23 are as shown in FIG. 10, and the hydraulic jack cylinder 3C of the mast 2C to which the excessive load F is applied in FIGS. It is shrunk by 2 mm from S = −2 to be within the predetermined load range, and it is displayed that the level correction amount of the mast 2C is −2 mm.

When the above adjustment is completed, each of the hydraulic jack cylinders 3A to 3D synchronously contracts by the predetermined stroke amount (for example, 10 mm) extended in step S1 to return the frame 1 to its original height (step S16). ), S
A spacer or the like having a thickness equal to the displacement S is inserted between the masts 2A to 2D and the structural column 11 based on the displacement S as the correction amount of the masts 2A to 2D indicated by 14. (Step S
17) The insertion of the spacer is performed, for example, by using the mast 2 in FIG.
Mast 2A since the displacement S of C ₁ corresponding to C is -2, B, in the same way as in FIG. 4 (A) ~ (C) the thickness of the member of 2mm between the D and structural columns 11 By interposing, the fitting holes 25 of the masts 2A, 2B, and 2D rise by 2 mm (that is, the mast 2C is relatively lowered by 2 mm), and the level of the frame 1 and the load F of the hydraulic jack cylinders 3A to 3D are increased.
Can be maintained substantially uniformly.

Thus, the hydraulic jack cylinders 3A to 3D
The range of the load F and the level of the frame 1 are uniformly adjusted. When the construction of the top floor is completed as shown in FIG. 4, the hydraulic jack cylinders 3A to 3D are extended and the new structural columns 11 are inserted. It is possible to sequentially move upward while holding the level of the frame 1 upward.

In this way, the load F is calculated based on the hydraulic pressure detected after the hydraulic jack cylinders 3A to 3D are once extended by a predetermined stroke amount, and the hydraulic pressure is adjusted so that the load F falls within a predetermined load range. Jack cylinder 3A ~
Since the stroke amount at which the predetermined load range is obtained by expanding and contracting D is displayed on the display device 23, it is possible to easily obtain the level adjustment amount without performing the surveying that requires a great deal of labor. In addition, construction work with high dimensional accuracy can be performed while keeping the level of the frame 1 uniform, and synchronous operation can be performed smoothly by preventing an excessive load from being applied to the hydraulic jack cylinders 3A to 3D.

In the above-described embodiment, an example in which the hydraulic jack cylinders 3A to 3D are disposed on one side of the frame 1 has been described.
Can be changed as appropriate according to the shape of.

[0050]

As described above, according to the present invention, the hydraulic jack cylinder is driven so that the load applied based on the output of the hydraulic pressure detecting means becomes a predetermined value. This makes it possible to easily maintain the level of the upper part of the building and the frame uniformly without the need, and to prevent an excessive load from being applied to the hydraulic jack cylinder, thereby enabling the synchronous operation to be performed smoothly.

Further, since the stroke amount when the hydraulic jack cylinder has a predetermined load is displayed on the display means as a correction amount, a level correction amount can be easily obtained without performing a survey requiring a lot of labor. It is possible to improve the efficiency of construction work.

The load applied to the hydraulic jack cylinder is measured while the hydraulic jack cylinder is driven up to a predetermined stroke in the upward direction of the frame, so that the measurement is accurately performed without being affected by the structure of the building. Measurement is possible.

[Brief description of the drawings]

FIG. 1 is a claim correspondence diagram corresponding to the present invention .

FIG. 2 is a diagram corresponding to claims corresponding to the present invention .

FIG. 3 is a block diagram showing an embodiment of the present invention.

FIG. 4 is a schematic diagram illustrating the operation of the jack-up device.

FIG. 5 is a schematic side view of a frame showing the top floor of a building.

FIG. 6 is a flowchart showing a control flow.

FIG. 7 is a flowchart showing a control flow.

FIG. 8 is a side view of the building after jacking up.

FIG. 9 is a diagram showing display contents on a display device before jack-up.

FIG. 10 is a diagram showing display contents on the display device after jack-up.

────────────────────────────────────────────────── ─── Continuation of the front page Examiner Hiroshi Furuyano (56) References JP-A-2-178199 (JP, A) JP-A-55-55038 (JP, A) JP-A-3-166199 (JP, A) ( 58) Field surveyed (Int.Cl. ⁷ , DB name) E04G 21/16

Claims (1)

(57) [Claims] 1. A frame disposed above a building under construction, a plurality of masts connected to a structure of the building, and a plurality of hydraulic jack cylinders for vertically displacing the frame via each mast. In a jack-up type building construction apparatus provided with a means for detecting the hydraulic pressure of each hydraulic jack cylinder, a means for calculating the load applied to the hydraulic jack cylinder from the detected value of the hydraulic pressure, and a load set in advance based on the calculation result Means for determining a hydraulic jack cylinder that has exceeded the limit, control means for driving the hydraulic jack cylinder in the descending direction of the frame based on the determination result so as to reach the set load, and each of the hydraulic jack cylinders
Means for detecting a stroke amount of the damper.
The stage is used when calculating the load of the hydraulic jack cylinder.
Each hydraulic jack cylinder in the upward direction of the frame.
A jack-up type building construction apparatus characterized in that a stroke is synchronously moved by a predetermined amount .