JPH0786210B2 - Temporary pier and its construction method - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mechanism and a construction method for a temporary jetty installed in a river, the sea or the like.

[0002]

2. Description of the Related Art Temporary piers are temporarily constructed for the purpose of approaching working machines, transporting materials, or securing work places when constructing structures such as rivers, seas, and lakes. FIG. 12 shows a conventional structure of this temporary pier. A horizontal connecting member 91 for connecting the pillars 90 standing upright on the bottom of the water by a method such as vibration or driving to each other and the horizontal connecting members 91. And a brace member 92 that is hung over the. Support 9
A lower girder material 93 such as H steel is spanned between the upper end portions of 0, and an upper girder material 94 orthogonal to the same girder material 93 is attached to the upper part of the lower girder material 93. A lining plate 95 is laid. The construction of such a temporary pier is supported by the support 90
Is struck into the ground at the bottom of the water by vibration, driving, etc., the columns 90 are connected by the horizontal connecting members 91, then fixed by the brace members 92, and the lower girder material 93 and the upper girder material 94 are attached in this order, and the upper girder material 94 This is done by laying a lining plate 95 on top.

[0003]

In the conventional temporary pier, noise and vibration are generated at the time of construction, and the horizontal connecting member 91,
It takes a lot of time and effort to connect the respective members such as the brace member 92 and the lower girder member 93. In addition, during construction, unevenness of the top height of the support columns 90 and unevenness in the span direction and girder direction are likely to occur, and work for correcting them is also required. The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a temporary pier and a construction method therefor, which is easy to construct and which is less likely to cause misalignment and can be assembled and assembled in a short time.

[0004]

In order to achieve the above object, in the temporary pier of the present invention , a girder member is fixed to the upper end of a column.
Both of them are bases with bottom ground adjustment means attached to the ground.
Multiple girders are installed on the ground, and a lining plate is laid on the upper surface of the girder material.
It is characterized by being installed, and means for adjusting the unsteadiness of the ground
As a screw that bites into the ground while rotating
Is the jetting means for jetting jet water toward the ground
It is characterized by In addition, the construction method of the present invention is
The lower girder material is fixed to the end, and the unevenness of the ground is adjusted to the lower end.
Lifting a plurality of bases equipped with means with a crane etc.
And then sequentially arranging them in predetermined places, then adjusting means at the lower end of the column
Installed at a predetermined interval while adjusting the ground unevenness with
Then, place it between the lower girders at the upper ends of the adjacent bases.
Straddle the beams, then lay a lining plate on the upper beams
It is characterized by doing.

[0005]

[Operation] With the above configuration, by installing the base on the construction site, the ground is scraped by the rotation of the screw configured at the lower end of the support, and the ground is sunk into the ground to adjust the ground level. You can Because of this, vibration,
It can be installed easily and quickly without performing work such as casting. In addition, the jetting means jets the jet water to adjust the base.

[0006]

1 to 3 show a first embodiment of a temporary pier according to the present invention, in which a pair of left and right struts 2 in which steel materials are assembled in a triangular shape, and a straddle shape are attached to the upper ends of the struts 2. The base 1 is composed of the lower girder material 3 made of H steel. In FIG. 2, reference numeral 4 is a connecting member that connects the lower portions of the columns 2. A support plate 5 is attached to the lower end of the column 2, and a screw 6 as an adjusting means is rotatably attached to the support plate 5. The screw 6 has its shaft 6
It is attached to the bracket 7 of the support plate 5 so that a is in the horizontal direction, so that it can rotate in the horizontal plane. Such a base 1 is preassembled in a factory and then transported to a construction site.

Next, a method of constructing the temporary jetty of this embodiment will be described. After transporting the base 1 to the construction site, lift it with a crane or the like and install it in a predetermined place. At the time of this installation, the screw 6 is rotated by the driving device to scrape the surface of the ground, and the weight of the base 1 digs into the ground at the bottom of the water to adjust the ground. For this reason, a stable installation state is achieved, and it is not necessary to drive the support column 2 into the ground. After installing a plurality of bases 1 at predetermined intervals in this way, the upper girder material 9 is bridged between the lower girder materials 3 at the upper ends of the adjacent bases 1.
After that, by laying the lining plate 10 on the upper girder material 9, the state shown in FIG. 3 is obtained, and the construction is completed. Therefore, it is not necessary to drive the support pillars that cause noise or vibration, so that it is possible to construct in a low noise environment. Further, since the construction is completed only by installing the base 1 and attaching the upper girder material 9 and the lining plate 10, the work is simplified and the construction can be easily carried out in a short period of time. Moreover, when the base 1 is installed, unevenness in the height direction is unlikely to occur because the ground 6 is adjusted by the screw 6, and the position adjustment of the base 1 is easy, so that the girder direction and the span direction can be adjusted. Accurate construction is possible without causing misalignment.

4 and 5 show other examples of the base 1, respectively. In FIG. 4, the columns 2 are assembled in a gate type, and in FIG. 5, the columns 2 assembled in a gate type are connected by a brace member 11. ing. Further, in FIG. 5, the upper girder material 9 is attached in the direction orthogonal to the lower girder material 3 to form the base 1. Even in each of these bases, the provision of the screw 6 at the lower end of the support column 2 allows the adjustment of the base, so that the temporary pier can be constructed easily and reliably.

6 and 7 show a second embodiment of the temporary jetty of the present invention, in which a plurality of injection holes 12 are formed in the longitudinal direction. A water pipe (not shown) connected to the injection hole 12
Is provided, and this water pipe is connected to an injection source such as a pump (both not shown) via a hose. The jet holes 12, the water pipe, and the jet source constitute jetting means for jetting jet water. This injection means
As described above, the base 1 is installed on the site, and the jet water 13 is jetted from the jet holes 12 into the ground. Since the jet water 13 can surely adjust the unevenness of the base, there is an advantage that a stable installation can be performed.

FIG. 8 shows a third embodiment of the temporary pier of the present invention, which has a triangular upper member 21 and an upper member 21.
The column 2 is composed of the lower member 22 into which the lower part of the above is slidably inserted, and the lower girder member 3 is attached to the upper end of the upper member 21. As a result, the height of the column 2 can be adjusted. In addition, the left and right lower members 2
If 2 is configured to be able to expand and contract independently, horizontal adjustment on each sloping ground of each base can be easily performed. 9 and 1
Reference numeral 0 indicates another example of this height adjusting mechanism, in which a vertical member 23 is vertically provided on the upper portion of the column 2, a slider 24 is slidably inserted into the vertical member 23, and a slider 24 is attached to the upper end portion of the slider 24. The beam member 3 is attached. Vertical movement of the upper member 21 and the slider 24 may be carried out by providing a fluid pressure cylinder inside each of them, or by lifting them with a crane or the like to adjust the height, and after adjusting them, bolts, Secure with pins. By making the strut 2 expandable and contractable in this way, the heights of the bases can be made uniform even when the bases are installed on an inclined water bottom, and the height and level of the lining plate can be easily adjusted. You can

FIG. 11 shows another example in which the height is adjusted on the girder side. An adjustment girder member 25 is provided on the lower girder member 3 that is bridged between the columns 2. This adjustment girder material 25 is a jack 2
Both ends of the adjusting girder member 3 are supported by the lower girder member 3 via 6, and the height of the adjusting girder member 25 is adjusted by extending and retracting one of the jacks 26. Therefore, when the base 1 is installed, even if the heights are not uniform, the adjustment girder member 25
It can be easily corrected by adjusting the height of the pier, and a temporary pier with a uniform height can be constructed.

[0012]

Industrial Applicability According to the present invention, since the ground is adjusted by a screw or jet injection by installing a base on which a girder material and columns are assembled, a temporary pier which can be stably installed by a simple operation. Therefore, it is possible to suppress the generation of noise and vibration even during the construction.

[Brief description of drawings]

FIG. 1 is an overall perspective view of a first embodiment of the present invention.

FIG. 2 is a side view of the base of the first embodiment.

FIG. 3 is a side view showing a construction state of the first embodiment.

FIG. 4 is a side view of another example of the base.

FIG. 5 is a side view of another example of the base.

FIG. 6 is a partially cutaway side view of the second embodiment.

FIG. 7 is a partially cutaway side view of the second embodiment.

FIG. 8 is a partially cutaway side view of the third embodiment.

FIG. 9 is a partially cutaway side view of another example of the height adjusting mechanism.

FIG. 10 is a partially cutaway front view of another example of the height adjusting mechanism.

FIG. 11 is an explanatory view of another example of the height adjusting mechanism.

FIG. 12 is a perspective view of a conventional temporary pier.

[Explanation of symbols]

 1 Base 2 Support 3 Lower girder 6 Screw 9 Lower girder 10 Lining plate 13 Jet water

Claims (4)

[Claims] 1. A girder member is fixed to the upper end of a column, and
On the ground, mount the base on which the ground unevenness adjustment means is attached.
A temporary pier with multiple girders installed and a lining plate laid on the upper surface of the girder . 2. The temporary pier according to claim 1, wherein the ground unevenness adjusting means is a screw that bites into the ground while rotating. 3. The temporary pier according to claim 1, wherein the ground unevenness adjusting means is a jetting means for jetting jet water toward the ground. 4. A lower girder member is fixed to the upper end of the column, and
After hoisting a plurality of bases, which are equipped with ground unevenness adjustment means at the lower end, with cranes, etc.
While adjusting the ground unevenness by the adjusting means at the lower end of the pillar, the ground is installed at a predetermined interval, and then the adjacent bases are
A method for constructing a temporary pier, in which an upper girder material is bridged between lower girder materials at the upper end, and then a lining plate is laid on the upper girder material.