JPH0466963B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method for positioning a template temporarily placed on a workbench, and particularly to a method for positioning a template in a short time with a minimum amount of movement and a minimum number of jerks. This invention relates to a template positioning method that allows for the following.

[Prior Art] When constructing a seaperth to serve as a distribution base for the purpose of storage management and receiving/receiving operations of LPG, petroleum, chemicals, etc., diagonal piles are driven under the seabed to serve as the foundation.

To drive such piles, a offshore platform called a sepp is usually used. The sep is towed to the work site by its own buoyancy, and when it arrives at the work site, the support is lowered so that it touches the seabed, and the work platform is fixed to the support by jacking up along the support.

A pile guide device called a template is provided on the workbench. Templates are usually
It consists of a plurality of guide tubes into which piles are inserted and a connecting member that connects the guide tubes.

When driving piles, the template temporarily placed on the workbench is moved to the template installation position obtained from the survey results and fixed. Once the template has been installed, the pile to be driven is hoisted up by a crane, supported by the pile support member of the pile drive tower set on the workbench, and the pile support member is lowered along the pile drive tower. The pile is lowered into the sea through the guide tube of the template, and the pile is erected. Once the piles have been erected, the piles are driven into the ground beneath the seabed by hitting the pile heads with a hammer or the like that moves up and down along the pile drive tower. Once a predetermined number of piles have been driven, the pile heads are tied together and the workbench is moved to the next pile driving site.

[Problems with the prior art] By the way, when positioning a template temporarily placed on a workbench according to the survey results, it is difficult to find a fixed point, and in the past, each point had to be moved a little at a time to move it to the correct position. It took a while to converge.

[Means for Solving the Problems] The present invention has been made to solve the above-mentioned problems of the conventional template positioning method, and its purpose is to quickly achieve a positioning method with a minimum amount of movement and a minimum amount of movement jerk. To provide a template positioning method that can always install a template in an accurate position.

Therefore, according to the present invention, a pair of fixed girders 2A and 2B installed parallel to each other with a predetermined interval apart from each other on a workbench is provided with slide seats 3A to 3D that move along the fixed girders 2A and 2B. Fixed digit 2
In addition to providing two for each of A and 2B, a rotating seat 5 is provided for each sliding seat 3A to 3D so as to be horizontally pivotable.
A to 5D are provided, and on the other hand, the template 10 is supported by a pair of hanging beams 13A and 13B provided parallel to each other with a predetermined interval apart, and the hanging beams 1
3A, 13B are hung on the swivel seats 5A, 5B provided on one fixed spar 2A and the swivel seats 5C, 5D provided on the other fixed spar 2B so that they can be moved while being guided by the swivel seats 5A to 5D. Then, determine the installation position "Z" of the template from the survey results, and set the direction parallel to the fixed girders 2A and 2B as the X direction, and the direction orthogonal to the fixed girders 2A and 2B as the Y direction.
Calculate the moving direction, X, Y, and amount of movement x, y of the template suspension girders 13A, 13B temporarily placed "O" on the fixed girders 2A, 2B, and calculate the movement direction, From point c, which is the position of the turning pin 6, point a, which is a distance x and y of movement in the X and Y directions, is set to each template hanging girder 13A,
Mark out 13B, select the marked point a, and fix the fixed digit 2.
Hydraulic jacks 14A, 14B and swing seats 5C provided between A, 2B and slide seats 3A, 3D,
Operate the hydraulic jacks 14C and 14D provided between 5D and the template hanging girders 13A and 13B to move the template hanging beams 13A and 13B by the amount x and y in the X and Y directions to match point a with point c. Then, with the pivot seat 5A at point c as the pivot center point, the hydraulic jack 14B, the pivot seat 5D, and the template suspension are installed between the fixed girder 2B and the slide seat 3D on the pivot seat 5D side, which is symmetrical to the pivot seat 5A. The point a where the template suspension girders 13A and 13B are marked out by operating the hydraulic jack 14D provided between the girder 13B is the position of the swing pin 6 of the other swing seat 5D at the template installation position "Z". Rotate the template until it coincides with point c, then measure the template position again to check whether it is within the tolerance. After checking, the template hanging girder 13A, 1
3B is fixed with a predetermined jig.

[Operations and Effects of the Invention] According to the template positioning method according to the present invention, the template suspension girder is moved in the X and Y directions by movement amounts x and y from a→b→c, and then fixed point c
Since it is only necessary to rotate the entire template hanging girder from c to c' around , the template temporarily placed "O" can be moved to the predetermined installation position "Z" obtained from the survey results with the minimum motion. Can be installed. At that time, only four jacks are needed: two jacks provided between the fixed girder and the slide seat, and two jacks provided between the swing seat and the template hanging girder. Further, no special technique is required for positioning the template, and the template can be quickly and easily positioned and installed at the template installation position obtained from the survey results.

[Examples] Examples of the present invention will be described below with reference to the drawings.

In FIG. 1 and FIGS. 4 to 6, a pair of fixed beams 2A and 2B are arranged in the center of the workbench 1 in parallel with each other and separated by a predetermined distance. On each fixed girder 2A, 2B, slide seats 3A, 3 that move on the fixed girders 2A, 2B by the stroke of hydraulic jacks 14A, 14B, which will be described later.
B, 3C, and 3D are suspension girders 13 of the template described later.
Two fixed beams are provided for each of the fixed girders 2A and 2B, separated by the interval A and 13B. Slide seat 3
Shoes 4 are applied to the portions of A, 3B, 3C, and 3D that contact the fixed girders 2A and 2B.

On each slide seat 3A, 3B, 3C, 3D,
Swivel seats 5A, 5B, which can be freely rotated by the swivel pin 6.
5C and 5D are provided. This rotating seat 5A,
5B, 5C, and 5D have hanging beams 13A and 13B of the template on them, and hanging beams 13 of the template are placed on them.
It guides the movement of A and 13B in the direction intersecting the fixed girders 2A and 2B. Each rotating seat 5A, 5B,
5C, 5D turning surface and template suspension girder 1
Shoes 7 and 8 are provided on the mounting surface where 3A and 13B touch, and flanges 9 are provided on both sides of the mounting surface.
A and 9B are formed.

The template, which is indicated by 10 in its entirety, has a cylindrical body 11 through which a pile (not shown) is inserted (the illustrated example is for driving four piles, and the cylindrical body has four cylindrical bodies spaced apart by 90 degrees. ) and the cylindrical body 1
1 and a connecting member 12 that interconnects the two. This is a well-known device, and is supported by a pair of suspension girders 13A and 13B that are arranged parallel to each other with a predetermined spacing between them. The hanging girders 13A and 13B are hung between the swing seats 5A and 5C provided on the fixed girders 2A and 2B and between the swing seats 5B and 5D.

Each fixed girder 2A, 2B and each one slide seat 3
There are slide seats 3A, 3B, 3 between B and 3D.
Hydraulic jacks 14A, 14B for moving C, 3D along fixed girders 2A, 2B are connected to shafts 15A,
15B, and between each swing seat 5C, 5D on the fixed girder 2B side and each template hanging girder 13A, 13B, hanging girders 13A, 1 are provided.
Hydraulic jacks 14C, 14D for guiding 3B by rotating seats 5A, 5B, 5C, 5D in a direction intersecting each fixed girder 2A, 2B are connected to shafts 15C, 14D.
15D and are provided in a axially connected manner. After moving the template 10 to a predetermined position, each slide seat 3A, 3B, 3C, 3D is moved to each fixed girder 2A,
A pin 16 is provided for fixing to 2B.

Regarding the method of positioning the template using the above device, in addition to FIGS. 1 and 4 to 6, FIG. 2 showing details of section A in FIG. 1 and B in FIG.
This will be explained with reference to FIG. 3 showing details of the section.

Determine the template installation position "Z" from the survey results, and temporarily place it on the fixed girders 2A, 2B with the direction parallel to the fixed girders 2A, 2B as the X direction and the direction orthogonal to the fixed girders 2A, 2B as the Y direction. Moving direction X, Y of template hanging girders 13A, 13B
and calculate the moving amounts x and y.

From point c, which is the position of the turning pin 6 of each turning seat 5A to 5D at the template installation position "Z", point a, which is at a distance x and y of movement in the X and Y directions, is marked on the square template hanging girders 13A and 13B. .

Select the marked point a (section A in Figure 1) and operate the hydraulic jacks 14C, 14D provided between the swing seats 5C, 5D and the template suspension beams 13A, 13B to move the template suspension beams 13A, 13B to Y. Move the template hanging girder 13A, 1 by the amount of movement y in the direction.
3B to the "Y" position, then fixed girders 2A, 2
Operate the hydraulic jacks 14A, 14B provided between B and the slide seats 3B, 3D to move the template hanging girders 13A, 13B in the X direction by an amount x to move the template hanging beams 13A, 13B to the "X" position. shall be.

At this time, point a moves from a to b to c and arrives at point c. Also, point a on the symmetrical side (section B in Figure 1) moves from a to b to c' and comes to point c'.
In addition, X, Y of template hanging girders 13A, 13B
You can move in either direction first.

Next, the pivot seat 5 at point c (Fig. A in Fig. 1)
The fixed girder 2 is located on the side of the rotation seat 5D (part B in Fig. 1), which is symmetrical to the rotation seat 5a, with A as the rotation center point c.
Hydraulic jack 14B provided between B and slide seat 3D, swing seat 5D and template hanging girder 13
By operating the hydraulic jack 14D installed between the template suspension girders 13A and 13B, the other marked point c' (point a has been moved to point c') is moved to the template installation position "Z". It is rotated until it coincides with point c, which is the position of the pivot pin 6 of the other pivot seat 5D. At this time, point c' turns to point c. As a result, the template hanging beams 13A and 13B are moved to the template installation position "Z".

Next, the template position is measured again to check whether it is within the tolerance, and after checking, the template suspension girders 13A, 13B are placed in the specified jig 16.
and each hydraulic jack 14A to 14
Remove the hydraulic hose D.

[Brief explanation of drawings]

FIG. 1 is a plan view showing a mode of positioning a template provided on an offshore workbench according to an embodiment of the present invention, FIGS. 2 and 3 are detailed views of portions A and B in FIG. 1, and FIG. 6 to 6 show essential parts of an apparatus for carrying out the present invention, with FIG. 4 being a plan view, FIG. 5 being a front view, and FIG. 6 being a side view. 1... Marine work platform, 2A, 2B... Fixed girder, 3
A, 3B, 3C, 3D...Slide seat, 5A, 5
B, 5C, 5D...Swivel seat, 10...Template, 13A, 13B...Hanging girder, 14A, 14B,
14C, 14D...Hydraulic jack.

Claims (1)

[Claims] 1 A pair of fixed girders installed parallel to each other with a predetermined distance apart on the workbench, and two slide seats that move along the fixed girders are attached to each fixed girder.
At the same time, each slide seat is provided with a pivot seat for horizontal rotation, and the template is supported by a pair of suspension girders installed parallel to each other at a predetermined interval, and the suspension girders are supported by one of the fixed girders. The installation position of the template is determined from the survey results, and the template is installed in a direction parallel to the fixed girder. With the X direction and the direction orthogonal to the fixed girder as the Y direction, calculate the moving direction, X, Y, and movement amount x, y of the template suspension girder temporarily placed on the fixed girder, and calculate the rotation of each swing seat at the template installation position. Mark out a point a on each template hanging girder at a distance x and y of movement from point c, which is the pin position, in the X and Y directions, select the marked point a, and set the hydraulic pressure between the fixed girder and the sliding seat. Operate the jack and the hydraulic jack provided between the swing seat and the template hanging girder to move the template hanging girder by the amount of movement x and y in the X and Y directions to make point a coincide with point c, and then at point c. With the swing seat as the center of rotation, operate the hydraulic jack provided between the fixed girder and the slide seat on the swing seat side symmetrical to the swing seat, and the hydraulic jack provided between the swing seat and the template hanging girder. Rotate the template suspension girder until the other marked point a matches point c, which is the position of the rotation pin of the other rotation seat at the template installation position, and then measure the template position again to ensure that it is within the tolerance. Check if there is, and after checking,
A template positioning method characterized by fixing a template hanging girder with a predetermined jig.