JPS61211411A - Gate installing method - Google Patents

Abstract

PURPOSE:To facilitate construction of a gate, by a method wherein, after watertight seals are formed to all the openings of a gate built in a shop, the gate is floated and tugged to a given position at a pier, and the seals are removed under a temporarily installed state. CONSTITUTION:A gate body 1 is built in a shop, and after watertight seals are formed to all openings, the body 1, so formed as to serve as a float, is floated on a water way 4. The body 1 is tugged to a pier 5, and is disposed in a position at the pier 5. After a wire 9 is stretched between a hoist 7 and a hook 8 at the forward end of a winding wire, the air in the float chamber of the body 1 is bled to bring the body 1 into an upright state, and the body 1 is lifted up from a position in water. Further, after the watertight seal of the body 1 is removed and equipment is mounted, the body 1 is regularly mounted.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The disclosed technology belongs to the technical field of manufacturing a large gate body installed in an estuary weir, etc. in a factory, transporting it by water, and installing it.

Therefore, the present invention provides a means for directly installing a gate main body, such as a large long span gate used for the estuary weir, etc., to a predetermined design size in a factory at a predetermined position of a pier. Then, using a hoisting machine previously installed on the pier, temporarily install it in a desired posture such as standing upright, then hoist it up and equip it with rollers and other parts necessary for the gate. This invention relates to a method for installing a gate, and in particular, all of the openings formed in a predetermined manner on the side surface of the gate body pre-built in a factory are appropriately sealed watertight to utilize the large-capacity cavity. The gate body is floated to the surface of the water, and towed by means such as a tug boat to a predetermined position on the pier using the buoyancy of the gate body, set in a temporary installation state on the pier, and all watertight seals from the opening are removed. This invention relates to a gate installation method in which the gate is hoisted up using a hoisting machine, equipped with necessary equipment such as rollers, and set in a desired posture.

<Prior art> As is well known, gates installed at estuary weirs, etc. these days are desirably large in order to improve the ability to communicate with the river, and these gates have recently been made larger due to the development of practical design, construction technology, economic efficiency, etc. Therefore, if the gate body is once built in a factory and then made into blocks and transported by land, disassembly, assembly and installation are cumbersome and costly, which is disadvantageous.
Means of water transportation using mutually communicating waterways etc. is used, and for example, as in the long span gate shown in Japanese Patent Publication No. 52-12493, gate bodies that are pre-built in a factory are used. It is loaded onto a designated barge, towed by a tugboat, etc., and transported by waterway to a designated pier, placed on the pier in advance, and lifted to a designated position by a lifting machine via a wire rope, and temporarily loaded onto a barge, etc. A construction method has been devised and adopted in which equipment is equipped with rollers, gate parts, etc., and is used for installation because it is low cost, highly safe, and has good workability.

<Problems to be solved by the invention> However, the installation method by water transport using means such as tugboat towing requires the chartering of a barge, etc. There are also problems such as restrictions due to interference with the gate, and there is also no guarantee that there will be no interference due to the height of the girder of the existing bridge in the middle of the transportation route due to the installation of the long span gate on the barge. There are also inconveniences, such as the need to take balance into account when attaching and removing the barge to the barge, and the need for cumbersome construction work for incidental facilities such as installing a stand from the barge to the pier.

The purpose of the present invention is to solve the technical problem of installing a long span gate on a pier by transportation on water based on the above-mentioned prior art, which is a bottleneck in transportation despite the inherent advantages of installing the long span gate on a pier by transportation on water. Taking advantage of the fact that the large-capacity cavity of the gate body, such as a gate, physically has a large buoyancy with respect to water, the gate body is used as a float and towed and transported from the time it is removed from the factory, making construction easier. The purpose is to provide an excellent gate installation method that takes full advantage of the convenience of transportation and is beneficial for the use of weirs in the construction industry.

<Means and operations for solving the problem> In order to solve the above-mentioned problem, the structure of the present invention, which is based on the above-mentioned object and the gist of the above-mentioned patent claims, is to solve the above-mentioned problem. The gate body, such as a long span gate, is constructed as one piece, and then the entire structure is maintained.
All the openings formed on the sides of the gate are sealed watertight by inserting rubber gaskets etc. around the plate as appropriate to form the entire gate body into a hollow float, and when it is transported from the factory, it is immediately exposed to the water surface. The floating gate is floated to the surface and towed by means such as a tugboat to a predetermined location on the pier, and at that location, the direction of the float gate body is adjusted by the tugboat, etc., and both ends are positioned at predetermined locations on both piers. Using a lifting machine pre-installed at the top of the pier, it is supported by wires, etc., and all watertight seals on the sides of the gate are removed to create the original gate shape, and then temporarily stored inside the gate etc. and installed. Take out the main shaft that was left in place, and install the rollers, rectifying plates, and other necessary equipment for the gate, which were transported using a control tank, etc., to the designated locations using a control tank, etc., to complete the installation. This was achieved by taking technical measures to achieve this goal.

<Embodiment - Configuration> Next, one embodiment of the present invention will be described below with reference to the drawings.

In this example, a large maximum span gate is installed as a gate, and the long span gate is completely installed at a factory according to the actual installation of the gate body of the long span gate in the design size format for a predetermined estuary weir, etc. Build it accordingly.

Therefore, in the present invention, the gate body of the long span gate is not constructed in a shape for block-divided transportation for land transportation.

After the gate body of the long span gate is constructed, as is well known, the gate body has various openings formed on all sides like a general gate body, so the gate body is floated. In order to achieve this, a suitable plate made of steel, wood, or synthetic resin is watertightly sealed with a suitable sealing material such as a rubber gasket for each frontage, and a partition wall for controlling the posture is installed inside the gate body. are interposed in a predetermined manner to form floating chambers, and each floating chamber is made airtight with an airtight sealing material as described above, and the floating gate body is floated from the shipping quay into the waterway.

As shown in Fig. 1, a wire 3 is stretched between one end of the gate body 1 of the long span gate, which was made into a float at the factory as described above, and a prescribed tugboat 2 as a towing means. It floats onto the waterway 4 and is towed toward Pier 5.5 of the estuary weir that has been constructed in advance at the river mouth.

After the gate body 1 reaches a predetermined position on the pier 5.5, the wire 3 stretched between both ends of the gate body 1 and the winch 6 of the tugboat 2 is expanded or contracted, or the tugboat is connected to another tugboat. As shown in FIG. 2, the gate body 1 is positioned at a predetermined position on the pier 5.5 as set by balance adjustment work, etc., and then, as shown in FIG. After tensioning the wire 9 between the winding machine 7 and the hook 8 at the tip of the winding wire, the air in the floating chamber inside the gate body is bleed, as shown in Fig. 4. As shown in the figure, the gate body 1 is placed in the established position, and the gate side sheave block, which has been set in advance on the winding machine wire, is attached to the specified position. Maintaining the state shown in FIG. 4, remove the watertight seals provided on all sides of the gate body 1, and then remove the main shaft temporarily secured and stored when applying the watertight seals inside the gate body 1. Then, the rollers and other equipment needed for the installation work, which were sent separately, are installed and assembled in the necessary parts, and the main gate body is installed to complete the installation of the long span gate.

Therefore, in this embodiment, when transporting the gate body 1 of a long span gate by waterway, a tugboat or the like tows the gate body 1, and therefore a barge or the like is not required for the gate body 1, and the potential buoyancy of the gate body 1 itself will be used to float the gate body and tow it.

At this time, when towing the gate body, it is sufficient to tow it in a floating position with the least waterway resistance, but if the wind and waves are large, it may be submerged to a predetermined depth under the water surface and towed.

It goes without saying that the embodiments of the present invention are not limited to the above-mentioned embodiments. For example, depending on the water depth of the shipping channel between the factory shipping channel and the pier, which has been investigated in advance, a balance weight may be loaded inside the gate body. However, various measures have been taken, such as adjusting the depth of the long span gate to allow the water to pass through a relatively shallow fence in the middle of the waterway, and installing a drainage plate at the tip of the gate body to reduce resistance. Aspects can be adopted.

Further, after the gate is towed to a predetermined position on the pier, the technical means disclosed in the above-mentioned Japanese Patent Publication No. 52-12493 can be employed.

If the gate body is only a gate body of a long span gate, it can also be applied to a gate body of a large or medium-sized gate.

<Effects of the Invention> As described above, according to the present invention, in the gate installation method for long span gates, etc., which are basically installed at river mouth weirs, etc., it is possible to By making use of the large capacity of the gate body to make it float on water, it can be towed to a designated via and installed, so the gate body itself, such as a long span gate, can be used as a barge, etc. Because it is floated to the surface of the water without being used, there is no need for it to be divided into blocks for land transportation, etc., and therefore it can be built as an integrated unit at the same size as installed at the factory, that is, without being divided. It has the excellent effect of being easy to manufacture and reducing errors and welding distortion during assembly, and also has the excellent effect of reducing transportation costs because it does not require the use of barges, etc. This has the excellent effect of further improving the basic advantage of not requiring a large floating crane or the like due to water transportation.

In addition, when making a gate body such as a long span gate float, it is necessary to properly seal the openings formed on all sides of the gate body to ensure that the cavity of the floating chamber inside the gate body is watertight. This can be done easily by applying an appropriate airtight material inside, and furthermore, it is possible to load balance weights etc. inside according to the design.
There is also an excellent effect in that it is possible to sufficiently pass under a shallow bridge under a girder on a waterway with respect to the gate body.

In addition, the gate body can not only carry a balance weight inside, but also a plate can be attached to the tip of the gate to reduce water flow resistance, which increases the advantages of waterway transportation. There is also.

[Brief explanation of drawings]

The drawings are explanatory diagrams of one embodiment of the present invention, in which Fig. 1 is a general schematic side view of the long span gate towed, Fig. 2 is a plan view of the positional relationship between the pier and the long span gate at the pier position, and Fig. 3 4 is a side view of the installation pressure of the long span gate with respect to the pier, and FIG. 4 is a side view of the same.

Claims (1)

[Claims] In the gate installation method, a gate body for a weir built in advance at a factory is transported by water to a predetermined position on a pier, and then installed in a preset manner using a hoisting machine installed in advance on the pier. After applying watertight seals to all openings formed in the gate body, the gate body is floated to the surface of the water and towed in a floating state to a predetermined position on the pier, and in the temporarily installed state, the watertight seals are removed and the hoisting machine is installed. A gate installation method characterized in that the gate is installed in a predetermined manner using the gate.