JP3754365B2 - Telescopic beam for pier construction and pier construction method using this telescopic beam - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a telescopic beam for building a pier and a method for constructing a pier using the telescopic beam.
[0002]
[Prior art]
In Japan, when carrying out civil engineering work on steep mountainous areas where roads are not well-developed and rivers with large changes in water volume, it is indispensable to secure a construction machinery carry-in route as a pre-treatment incidental work. In general, full-fledged civil engineering work is carried out after securing a carry-in route by temporary pier construction or the like.
In the construction of such a temporary jetty, if the length of the support supporting the upper panel of the jetty is increased to some extent, the connecting material (B) and the press material (C) are connected between the adjacent support (A) as shown in FIG. They are connected by a beam consisting of
Conventionally, such a beam connecting operation is performed by welding the mounting bracket (D) to the support column (A) and welding the connecting material (B) and the press material (C) to the mounting bracket (D). However, such a conventional work method is a work at a high place, which is very dangerous to the work and is difficult to control the quality because it is a field work. There was a problem that the construction of the scaffold was necessary and the construction period was long. Furthermore, there is a risk of causing a forest fire due to sparks generated during cutting and welding operations, and once installed beams cannot be reused, it is not preferable from the viewpoint of environmental protection and resource protection.
[0003]
[Problems to be solved by the invention]
The present invention has been made in view of such circumstances, and it is possible to safely and promptly install a beam between pier columns, and it is easy to quality control, is environmentally friendly, and protects resources. The purpose of this project is to provide a telescopic beam for building a pier that can contribute, and a method for constructing a pier using this telescopic beam.
[0004]
[Means for Solving the Problems]
The invention according to claim 1 is a telescopic beam that connects between the columns of the jetty, and includes a plurality of connecting members that are arranged in parallel to each other and can be expanded and contracted in the length direction, and two connecting members that are adjacent to each other. Without being joined to each other so as to connect one end of one connecting member and the other end of the other connecting member, and one end of the other connecting member and the other end of one connecting member, respectively. The present invention relates to a telescopic beam characterized by comprising a press material provided in a cross.
The invention according to claim 2 relates to the telescopic beam according to claim 1, wherein attachment members that match the shape of the side surface of the support column are detachably provided at both ends of the connecting material.
The invention according to claim 3 relates to the telescopic beam according to claim 1 or 2, wherein the connecting member is constituted by a hydraulic cylinder.
[0005]
The invention according to claim 4 is a method for constructing a pier in which a panel is mounted on a plurality of support columns and the adjacent support columns are connected by beams to be reinforced, and the lengths are arranged parallel to each other. A plurality of connecting members that can be expanded and contracted in the direction, and two connecting members adjacent to each other, one end of one connecting member, the other end of the other connecting member, and one end of the other connecting member; Stretching beams made of pressed materials that are crossed without being joined to each other so as to connect the other ends of one of the connecting materials are adjacent to each other so that the connecting material and the column are perpendicular to each other. The pier is characterized in that it is placed between the columns, and is extended sequentially from the connecting material at the top, and the two ends of the connecting material are brought into contact with the side surfaces of the columns, thereby connecting the adjacent columns with the telescopic beams. Concerning construction method.
The invention according to claim 5 relates to a method for constructing a pier according to claim 4, wherein the telescopic beams are arranged between adjacent columns by suspension with a crane arranged on a panel.
The invention according to claim 6 is characterized in that, after the adjacent struts are connected to each other by a telescopic beam, the telescopic beam and the panel placed thereon are connected by a rope. On the construction method of the pier.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of a telescopic beam for building a pier and a method for constructing a pier using the telescopic beam according to the present invention will be described with reference to the drawings.
FIG. 1 is a front view showing a first embodiment of the telescopic beam according to the present invention, and FIG. 2 is a top view thereof.
The telescopic beam (1) according to the present invention is an telescopic beam that connects between the columns of the pier, and is provided with a plurality of (three in the illustrated example) connecting members that are arranged in parallel to each other and can be expanded and contracted in the length direction. 2) and a press material (3) which is provided between two connecting materials (2) adjacent to each other and connects these connecting materials.
[0007]
The connecting material (2) is configured to be able to expand and contract in the length direction and to maintain the length in the extended state.
1 and 2 show an example in which the connecting material (2) is constituted by a hydraulic cylinder, and the entire length is expanded and contracted by supplying oil from the tube (13) into the cylinder. Is possible.
In the illustrated example, the number of connecting members (2) is three. However, the number of connecting members (2) may be two or four or more, and the number of the connecting members (2) can be appropriately set according to the length of the support column.
[0008]
At both ends of the connecting material (2), mounting members (4) that match the shape of the side surface of the support column are provided.
The shape of the mounting member (4) is not particularly limited, and can be appropriately changed according to the shape of the pier column. For example, when the column is made of a steel pipe, the mounting member is as shown in FIG. (4) may be an arcuate curved plate.
Moreover, if attachment member (4) is made removable with respect to connecting material (2), attachment member (4) can be changed according to the support | pillar shape of a pier, and it can give versatility to a telescopic beam. This is preferable because it is possible.
[0009]
The press material (3) includes one end of one connecting material, the other end of the other connecting material, and one end of the other connecting material between two adjacent connecting materials (2) and (2). And the other end part of one connecting material is crossed and attached so that it may each connect.
The two crossed press materials are not joined to each other, and the crossing angle changes with expansion and contraction of the connecting material (2).
[0010]
FIG. 3 is a diagram showing a state before and after expansion of the telescopic beam (1). As shown in the figure, when the lengths of the connecting members (2) and (2) are extended, the two pressed materials (3) ( The crossing angle of 3) changes so as to be close to a right angle, whereby the entire telescopic beam (1) extends in the length direction, and at the same time the interval between the connecting materials is reduced.
[0011]
FIG. 4 is a front view showing a state in which the telescopic beam (1) is attached between the columns (6) that support the panel (7) of the jetty, and FIG. 5 is a top view thereof.
As shown in the drawing, the telescopic beam (1) is formed by extending the connecting member (2) and bringing the attachment member (4) into close contact with the side surface of the column (6), thereby adjacent two columns (6) (6). ) Are connected to each other.
[0012]
FIG. 6 is a front view showing a second embodiment of the telescopic beam (1) according to the present invention, and FIG.
The telescopic beam (1) of the second embodiment is different from that of the first embodiment in the configuration of the connecting material (2), but the other configurations are the same, so the same configurations are denoted by the same reference numerals. Thus, the description will be omitted, and only different configurations will be described.
[0013]
The connecting material (2) of the telescopic beam (1) of the second embodiment is configured as follows.
Eight unit members (a), (b), (c), (d), (e), (f), (g), and (h) having a U-shaped cross section are combined in an octagonal shape, and adjacent unit members are rotated by pins. An 8-joint link is formed by movably connecting, and screw holes are formed in the upper surface of the upper unit member (a) and the lower surface of the lower unit member (e) constituting the link, and these two screws The screw (20) is inserted so as to be screwed into the hole, and the gear (21) is attached to the screw (20).
Then, a U-shaped gap holding member (22) is fixed to the screw (20) so as to connect the upper part of the gear (21) and the lower part of the lower unit member (e), and the gap holding member (22) Spacers (23) and (24) are interposed between the upper surface of the gear (21) and between the spacing member (22) and the lower surface of the unit member (e), respectively, and the gear (21) and the unit member (e). So that the distance between is constant.
[0014]
Further, connecting members (27) and (28) are extended from the right surface of the right unit member (c) to the right and from the left surface of the left unit member (g) to the left, respectively, and these connecting members are extended. A mounting member (4) is attached to the tip of the direction.
An operation rod (25) that can be rotated is provided in parallel with the screw (20), and a gear (26) that meshes with the gear (21) is attached to the operation rod (25).
For convenience of drawing, the operating rod (25) is drawn on the right side of the screw (20), but is actually provided in front of the screw (20). The spacing member (22) is provided behind the unit member so that the opening faces forward. Further, the operation rod (25) is held at a predetermined position by a method such as coupling with the interval holding member (22).
[0015]
When the gear (26) is rotated together with the operation rod (25) in the connecting member (2) having the above-described configuration, the gear (21) meshing with the gear (26) is rotated, and accordingly, the gear (21) is fixed. The formed screw (20) rotates.
At this time, since the distance between the gear (21) and the unit member (e) is fixed by the spacing member (22), it is screwed into the screw (20) by the rotation of the screw (20). The interval between the unit members (a) and (e) is enlarged (reduced), and accordingly, the interval between the unit members (c) and (g) connected to the unit members (a) and (e) to form a link mechanism. Shrinks (enlarges).
[0016]
FIG. 7 shows a state in which the interval between the unit members (c) and (g) is reduced by the rotation of the operation rod (25), and when the interval between the unit members (c) and (g) is reduced in this way. The connecting members (27) and (28) joined to the unit members (c) and (g) are pulled inward toward the screw (20), whereby the connecting member (2) is reduced in the length direction. The interval between the mounting members (4) and (4) is narrowed.
In order to extend the connecting material (2) in the length direction, the operation rod (25) may be rotated in the reverse direction.
[0017]
Hereinafter, the construction method of the pier using the telescopic beam (1) according to the present invention will be described. In addition, in the figure, the case where the telescopic beam of 1st embodiment is used is shown.
First, after the columns (61) and (62) are erected on the ground (5), the panel (71) is mounted on these columns and the crane (8) is installed on the panel (71).
Next, as shown in FIG. 8, the next panel (72) is lifted by the crane (8) and arranged on the existing panel, and both panels are connected by the PC steel wire (9).
Then, as shown in FIG. 9, a table machine (10) is installed on the panel (72) by using the crane (8) to drill the ground (5), and then, as shown in FIG. The pillar (63) is driven into the hole made by the hole to fix the stigma and the panel (72).
[0018]
As shown in the example, when the pier is constructed on the inclined ground, the height of the support column is gradually increased. When the column height is low, it is not necessary to provide a beam between the columns. However, when the column height is high, it is necessary to reinforce the column by connecting the columns. In the illustrated example, a case where a beam is installed between the columns (62) and (63) is shown. In the present invention, the telescopic beam (1) having the above configuration is used.
[0019]
The telescopic beam (1) is suspended by the crane (8) so that the connecting material (2) and the columns (62) (63) are perpendicular to each other, and between the adjacent columns (62) (63). Is lowered to a predetermined height position.
At this time, if a guide member (11) having a U-shaped cross section as shown in FIG. 11 is interposed between the hook of the crane (8) and the telescopic beam (1), the opening of the guide member (11) It is preferable to insert the panel (72) into the telescopic beam (1) because the telescopic beam (1) can be positioned easily and reliably.
[0020]
After the telescopic beam (1) is lowered to a predetermined height position, the connecting member (2) is extended by a method such as extending the hydraulic cylinder, and the attachment members (4) provided at both ends are attached to the columns (62 ) Adhere to the side of (63). At this time, as shown in FIG. 12, the extension material (2) in the upper part is extended in order, and when the extension of all the connection materials (2) is completed, the elastic beam (1) is firmly attached between the columns. Installed.
In the above process, the installation of the telescopic beam is completed for the time being. However, since the tightness of the connecting material (2) to the support column may be loosened due to a decrease in hydraulic pressure, etc., the telescopic beam may fall. As shown in FIG. 13, the installed telescopic beam (1) and the upper panel (72) may be connected by a rope (12).
[0021]
【The invention's effect】
As described above, according to the telescopic beam for pier construction according to the present invention and the pier construction method using this telescopic beam, it is possible to suspend the beam with a crane and install it between the columns of the pier, The beam can be installed safely and quickly.
In addition, work can be done using the telescopic beam assembled in the factory as it is, and no on-site welding or bolting is required, making it possible to easily perform high-quality quality control. .
Moreover, since there is no danger of wildfires due to the occurrence of sparks, it is environmentally friendly, and it can be removed from the jetty that is no longer needed and can be used again.
[Brief description of the drawings]
FIG. 1 is a front view showing a first embodiment of a telescopic beam according to the present invention.
FIG. 2 is a top view showing a first embodiment of the telescopic beam according to the present invention.
FIG. 3 is a diagram showing a state before and after expansion of the telescopic beam.
FIG. 4 is a front view showing a state in which the telescopic beam is attached between the columns supporting the pier panel.
FIG. 5 is a top view showing a state in which the telescopic beam is attached between the columns supporting the pier panel.
FIG. 6 is a front view showing a second embodiment of the telescopic beam according to the present invention.
FIG. 7 is a diagram showing the action by extracting the main part of the telescopic beam of the second embodiment.
FIG. 8 is a view showing a construction method of a pier using the telescopic beam according to the present invention.
FIG. 9 is a view showing a construction method of a pier using the telescopic beam according to the present invention.
FIG. 10 is a diagram showing a construction method of a pier using the telescopic beam according to the present invention.
FIG. 11 is a view showing a construction method of a pier using the telescopic beam according to the present invention.
FIG. 12 is a diagram showing a construction method of a pier using the telescopic beam according to the present invention.
FIG. 13 is a view showing a construction method of a pier using the telescopic beam according to the present invention.
FIG. 14 is a diagram showing a conventional pier construction method.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Telescopic beam 2 Connecting material 3 Press material 4 Mounting member 5 Ground 6 Post 61, 62, 63 Post 7 Panel 71, 72 Panel 8 Crane 12 Rope

Claims (6)

A telescopic beam that connects the columns of a jetty, and is connected between two connecting members that are arranged parallel to each other and can be expanded and contracted in the length direction, and two connecting members adjacent to each other. Press material provided in a crossed manner without being joined to each other so as to connect one end portion and the other end portion of the other connecting material, and one end portion of the other connecting material and the other end portion of the one connecting material, respectively. A telescopic beam characterized by comprising: The telescopic beam according to claim 1, wherein attachment members that match a shape of a side surface of the support column are detachably provided at both ends of the connecting material. The telescopic beam according to claim 1 or 2, wherein the connecting member is constituted by a hydraulic cylinder. A method of constructing a pier in which a panel is mounted on a plurality of columns and the adjacent columns are connected by a beam to reinforce, and the plurality of columns are arranged parallel to each other and extendable in the length direction. Between the connecting material and two adjacent connecting materials, one end of one connecting material and the other end of the other connecting material, and one end of the other connecting material and the other end of the one connecting material. An elastic beam made of a press material provided to be crossed without being joined to each other is arranged between adjacent struts so that the connecting material and the struts are perpendicular to each other, and A construction method of a jetty characterized in that adjacent struts are connected by an extendable beam by sequentially extending from the joint material in the step and bringing both ends of the joint material into contact with the side surfaces of the struts. The method for constructing a pier according to claim 4, wherein the telescopic beams are arranged between adjacent columns by hanging with a crane arranged on a panel. 6. The method for constructing a pier according to claim 4 or 5, wherein, after connecting adjacent struts with a telescopic beam, the telescopic beam and a panel mounted thereon are coupled with a rope.

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