JPH0835209A - Installation method for large structures - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a method for installing a large structure in which the support plate can be easily installed when the support is mounted on the support plate and the damage during the installation can be prevented. [Structure] A substantially cross-shaped protrusion 5a is formed on a bearing 5 attached to the lower surface of a rack 3 of a unit 4, and the lower surface 5d is finished flat by mechanical finishing or the like. On the other hand, the backing plate 10 is mounted on the pier 2 at the reference height H. After mounting the cross-shaped lower surface 5d of the support 5 of the unit 4 lifted by the crane on the receiving plate 10, it is positioned and installed. As a result, the bearing 5 can be easily installed on the receiving plate 10, the load can be evenly transmitted to the receiving plate 10 through the bearing 5, and the flat receiving plate does not damage the receiving member 10a by the protruding portion 5a. . Also,
The space between the backing plate 10 and the winding pipe 7 is large, so that concrete can be easily placed when the backing plate 10 is installed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for installing a large structure, in which a bearing is attached to a large structure such as a pipeline installed on the sea or on land, and the pipe is installed on a foundation such as a pier with high precision. It is suitable for installation to the extent that welding can be performed.

[0002]

2. Description of the Related Art One of the cases in which a large structure must be installed on a foundation with high precision is a pipeline connecting a sea berth to a sea tank.

As shown in FIG. 2, for example, this pipeline 1 is provided with foundation piers 2 installed at a fixed interval between the seaverse and the land, and has a length (branch) corresponding to the interval between these piers 2. ) Attach the necessary pipes etc. to the rack 3 and make it as a unit 4 in the factory beforehand, hoist each unit 4 with a crane and install the rack 3 between the piers 2 and 2 and weld the pipes of the units 4 and 4 We are trying to build it by joining with.

Each unit 4 in such a pipeline 1 constitutes a large structure having a weight of about 10 to 400 tons, and a rack 3 is installed on the pier 2 to connect the pipes of the units 4 and 4. 1mm when trying to weld
It must be installed with a certain degree of accuracy.

For this reason, the bearings 5 are provided at the four corners of the lower surface of each unit 4.
3, the support plate 6 and the bolt 7 are attached to the corresponding portions of the pier 2 as shown in FIG. 3, and the support 5 is supported on the support plate 6.
Place and tighten the nuts to fix it.

However, since the height of the surface of the pier 2 is not usually made strictly, when the support plate 6 is mounted on the pier 2, surveying is performed so that the height becomes the reference height. As shown in FIG. 4, the bearing 5 is divided into four receiving members 6a so as not to interfere with the cross-shaped protrusion 5a of the support 5, and correspondingly, the support 5 is shaped like a cross. A unit 4 in which a lower surface 5b around the protruding portion 5a is machined to be flat and lifted by a crane.
When lowering, the protrusion 5 of the bearing 5 attached to the rack 3
The lower surface 5b around a is placed on the four receiving members 6a of the receiving plate 6 so as to have a predetermined height, and then the left, right, front and rear positions are adjusted by a slide jack or the like.

[0007]

However, when lowering each unit 4 from the state where it is lifted by the crane onto the pier 2, the projection 5a of the support 5 is not placed on each receiving member 6a of the receiving plate 6, It is difficult to place the lower surface 5b of the receiving plate 6 on each receiving member 6a of the receiving plate 6, and the load cannot be evenly transmitted to the four receiving members 6a via the bearings 5, and There is a problem such as damage to the receiving member 6a.

A winding pipe 8 is usually attached around the receiving plate 6 and bolts 7 are embedded therein. However, since the space between the receiving plate 6 and the winding pipe 8 is small, concrete is placed to form the receiving plate. There is also the problem that the work is difficult to do when making it.

The present invention has been made in view of the above problems of the prior art. When the bearing is mounted on the backing plate and installed, the backing plate can be easily installed, and damage during the installation can be prevented. It is intended to provide a method of installing a structure.

[0010]

In order to solve the above-mentioned problems, a method for installing a large structure according to the present invention is such that, when a large structure is installed on a foundation, an approximately cross-shaped protrusion is provided at a supporting position of the large structure. While mounting a bearing whose bottom surface is finished to be flat, the bearing plate on which the lower surface of the substantially cross-shaped protrusion of the bearing is placed is installed on the foundation at the reference height, and then the bearing of the large structure is supported. The protrusion is placed on the backing plate on the foundation to be positioned and installed.

[0011]

According to the method for installing a large structure of the present invention, a substantially cruciform protrusion is formed on the support attached to the lower surface of the large structure, and the lower surface is finished flat by mechanical finishing or the like. The support plate is mounted on the foundation such as a pier at the standard height, and after placing the cross-shaped lower surface of the support of a large structure lifted by a crane etc. on the support plate, it is positioned and installed. , It is not necessary to put the protruding part of the bearing between the receiving plates and put it on the receiving plate as in the past, and the bearing can be easily installed on the receiving plate, and the load is evenly applied to the receiving plate via the bearing. And the flat receiving plate does not damage the receiving plate at the protrusion.

Further, since the space between the receiving plate and the winding pipe is large, concrete can be easily placed when the receiving plate is installed.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings. FIG. 1 is an enlarged process explanatory view according to an embodiment of the method for installing a large structure of the present invention.

The method of installing this large structure is shown in FIG.
The pipeline 1 that connects the sea berth and the onshore tank described above is attached to a rack 3 at a factory to form a unit, and each unit 4 is installed between the piers 2 and 2.

In this method of installing a large structure, the four corners of the lower surface of the rack 3 of the pipeline unit 4 constituting the large structure are set to the support positions A (see FIGS. 2 and 3), and the rack 3 is installed. The support 5 is attached to the support position A.

As shown in the front view and the bottom view in FIG. 1 (a), the support 5 is made of cast metal and is attached to a supporting position A on the lower surface of the rack 3 by a bolt (not shown).
A substantially cruciform protrusion 5a is formed on the lower surface of the support 5, and by supporting the protrusion 5a so as to sandwich it,
It is designed to be able to regulate movement to the left, right, front and back.

Further, the bearing 5 has a bolt 7 for installation.
Is formed with a bolt hole 5c.

In order to mount the rack 3 of the unit 4 at the reference height through the support 5, the lower surface 5d of the projection 5a of the cast support 5 is machined to be flat.

On the other hand, on the upper surface of the pier 2 on which the unit 4 having such bearings 5 mounted at the supporting positions A at the four corners is installed, as shown in a sectional state and a plane state in FIG. The plate 10 is adjusted to the reference height H and attached.

The receiving plate 10 is for mounting the lower surface 5d of the protruding portion 5a of the support 5, and the receiving member 10a such as an iron plate is arranged in a substantially cross shape so that the reference height H is obtained. Can be mounted on concrete, etc.

Therefore, the receiving member 10a of the receiving plate 10
Is the lower surface 5 around the cross-shaped protrusion 5a of the conventional bearing 5.
The reference height H is at a position lower by the height of the protruding portion 5a than that in which b is installed at the reference height.
The receiving member 10a of No. 2 is in a state of not protruding much from the upper surface of the pier 2.

Winding pipes 8 are arranged at four corners of the receiving plate 10, and bolts 7 for mounting the bearings 5 are implanted and fixed with concrete or the like.

The installation of the support 5 of the rack 3 of the unit 4 on the bridge pier 2 to which the support plate 10 and the bolts 7 are mounted as described above is shown in FIG.
The unit 4 is lifted by a crane or the like and moved between the piers 2 and 2.
The protruding portion 5a of the support 5 on the lower surface of the rack 3 is placed on the receiving member 10a of the receiving plate 10 attached to the pier 2, which is the foundation.

At this time, the receiving plate 10 attached to the pier 2
Since the receiving member 10a is not installed in a protruding state as in the conventional case, even if the unit 4 shakes, the support 5
The protrusion 5a of the bearing 5 can be easily placed on the cross-shaped receiving member 10a without being damaged by the protrusion 5a.

Thus, the bearings 5 at the four corners of the rack 3 of each unit 4 are received by the receiving members 10a of the corresponding receiving plates 10 of the piers 2 and 2.
By mounting it on the top, the vertical position can be set at a predetermined reference height H.

Thus, the bearing 5 is mounted on the receiving plate 10 of the piers 2 and 2.
After placing the unit 4 through the, remove it with a crane.

After that, the unit 4 is attached with a slide jack or the like.
Adjust the left, right, front and rear positions of the pipes, and fix the pipes attached to the rack 3 to an accuracy with which welding can be performed, for example, within a range of about 1 mm.

After the positioning of the unit 4 in the vertical, horizontal and longitudinal directions is completed in this way, the nut is tightened and fixed to the bolt 7, and concrete 11 or the like is placed between the bearing 5 and the support plate 10 to support the bearing 5. Not only the protruding portion 5a of
The installation is completed after the load can be transmitted to the pier 2 through the entire surface of the bearing 5.

After the unit 4 is thus installed between the piers 2 and 2, the pipes attached to the rack 3 are welded to complete the pipeline 1.

According to such a method of installing a large structure, it is not necessary to install the receiving plate 10 attached to the pier 2 in a protruding state, and the projecting portion 5a of the support 5 does not damage the receiving plate 10, and the cross shape Since the receiving member 10a may be attached to the space, there is a space between the winding pipe 8 and the receiving member 10a, and concrete can be easily placed.

In the above embodiment, the unit that constitutes the pipeline is given as a large structure, and the unit is installed on the pier. However, the structure is not limited to this, and a large structure on the sea or on land is about 1 mm. It is effective to apply when it is necessary to install with high precision.

[0032]

As described above in detail with the embodiment, according to the method for installing a large structure of the present invention,
A cruciform protrusion is formed on the support to be attached to the bottom surface of a large structure, and the bottom surface is made flat by mechanical finishing, etc., while the backing plate is attached to the foundation such as a pier at the standard height. In addition, after placing the cross-shaped lower surface of the support of a large structure that was lifted by a crane etc. on the backing plate, it was positioned and installed, so that the protruding part of the support is inserted between the backing plates as in the past. In this way, it is not necessary to place it on the backing plate, the bearing can be easily installed on the backing plate, and the load can be evenly transmitted to the backing plate through the bearing, and it is a flat backing plate. The receiving plate is not damaged by the protrusion.

Further, since the space between the receiving plate and the winding pipe is large, concrete can be easily placed when the receiving plate is installed.

[Brief description of drawings]

FIG. 1 is an enlarged process explanatory view according to an embodiment of a method for installing a large structure of the present invention.

FIG. 2 is an explanatory diagram of an example pipeline unit to which the method for installing a large structure according to the present invention is applied.

FIG. 3 is a plan view and a front view of a pier of an example pipeline to which the method for installing a large structure of the present invention is applied.

FIG. 4 is an explanatory view of a conventional pipeline unit installed on a pier.

[Explanation of symbols]

 1 Pipeline 2 Bridge Pier (Foundation) 3 Rack 4 Unit (Large Structure) 5 Support 5a Projection 5c Bolt Hole 5d Projection Lower Surface 7 Bolt 8 Winding Pipe 10 Support Plate 10a Support Member 11 Concrete A Support Position

Claims (1)

[Claims] 1. When installing a large structure on a foundation,
While mounting a bearing that has a substantially cross-shaped protrusion at the supporting position of a large structure and has its lower surface flattened, a base plate on which the lower surface of the substantially cross-shaped protrusion of the bearing is placed on the foundation A method for installing a large structure, characterized in that, after being installed at a height, a protrusion of a support for the large structure is placed on a backing plate on the foundation, positioned and installed.