JPH0311323B2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention is a long concrete gate used in a structure with a wide frontage such as an ultra-large dock.
Furthermore, the present invention relates to a long concrete gate that can be scuttled at an anchorage and used as a pier for outfitting a structure after it is docked.

(Prior art) Conventionally, for example, dock gates have been of the floating or flap type made of steel, but if the frontage is as large as 100 m or more, it is logically possible to use this type of gate, but the construction cost is high. is so huge that it is not realistic.

(Purpose of the invention) This invention was proposed in view of the above circumstances, and its purpose is to provide a long concrete gate that can suppress increases in construction costs even when the frontage becomes wider. be.

(Structure of the invention) The long concrete gate according to the invention is
It is a floating caisson-type gravity gate made of PC, PRC, RC structure, etc. The gate is composed of multiple units, and the inside of each unit is divided into multiple ballast chambers by partition walls with communicating holes at the bottom. Each unit is equipped with a ballast chamber that is equipped with water supply and drainage equipment inside the unit.The water inside the gate and its own weight resist seawater pressure, and the water inside the gate allows the floating body to float. It was designed so that

(Example) The present invention will be described below based on an illustrative example. As shown in FIG. 1, this is an example of a long concrete gate 1 used for a super-large dock D, and the length is more than 100 meters wide.

This long concrete gate 1 has a side wall 2 and a bottom plate 3, as shown in Figures 2 to 4.
It is a rectangular box with an open top surface, and a large number of ballast chambers B are formed inside the box, partitioned by lattice-like partition walls 4. Note that a passage slab S is provided on the upper surface of the ballast chamber B in the center.

These side walls 2, bottom plate 3, and bulkheads 4 are made of PC, PRC,
Consists of RC structure.

Furthermore, the long concrete gate 1 is divided into four units 1A, 1B, 1C, and 1D.
Each unit has one ballast chamber B having a gate filling and draining pump equipment 5 for filling and draining the ballast chamber B, and each unit also has a communication hole 6 (a fourth (see Fig. 5) is installed at the bottom, so that the water level in one unit is kept constant.

Ballast room B by gate injection and drainage pump equipment 5
It is injected into the interior of the vessel, and its own weight and internal water resist seawater pressure.

Furthermore, by draining the water in the ballast chamber B, the floating body is floated and towed and moved.

The water level in each unit 1A to 1D can be adjusted to maintain balance.

Further, as shown in FIG. 2, inside the long concrete gate 1, a dock drainage pump facility 7 capable of discharging water in the dock D, and a dock water injection facility 8 capable of injecting water into the dock D are provided. There is.

Furthermore, as shown in FIG. 3, product water pump equipment 18 and electric/pump control room 19 are manufactured in-house.

As shown in FIG. 6, the gate injection and drainage pump equipment 5 includes a drainage pump 5A, a drainage pipe 5B that connects the pump 5A to the outside of the dock, and an injection pipe 5C that is provided at the bottom and communicates with the outside of the dock and the lower part of the ballast chamber B. It consists of.

As shown in FIG. 7, the dock drainage pump equipment 7 consists of a drainage pump 7A, a drainage pipe 7B connecting the pump 7A to the outside of the dock, and an introduction hole 7C communicating with the lower part of the dock.

As shown in FIG. 8, the dock water injection installation 8 consists of an on-off valve 8A and an introduction pipe 8B that communicates the outer upper part of the dock with the lower part of the dock.

Next, the water-stop structure of such a concrete gate will be explained. As shown in FIGS. 9 to 12, there is a water-stopping column-shaped bag 9 provided on the vertical door stop, a water-stopping rubber packing 10 arranged on the bottom from the short side to the long side, and a water-stopping column-shaped bag 9. It consists of a water-stop elastic material 11 that connects the bag 9 and water-stop rubber packing 10.

Further, a corner drop 13 is provided at the end of the land portion 12 and the concrete gate.

On the bottom surface, the rubber packing 10 is crushed by the gate's own weight and the weight of the injected water to stop water.

On the vertical plane, after installing a concrete gate in a predetermined position, air is inflated with water to stop water.

Next, the concrete gate installation guide will be explained. As shown in FIG. 13, this is installed inside the water-stopping column-shaped bag 9 in the door stop, and consists of a convex guide plate 14 and a concave guide plate 15 each having an arcuate cross section, each of which is anchored by an anchor reinforcing bar 16. There is.

With such a tenon-type installation guide, positioning of the concrete gate in the longitudinal direction and the width direction becomes easy, and ship maneuvering using the winch 17 provided at the end of the gate becomes easy.

The above explanation was about using it as a gate, but by scuttling it at an anchorage,
It can also be used as a pier for outfitting a structure after it is docked.

(Effects of the Invention) As described above, according to the present invention, a large number of ballast chambers are formed inside by partition walls, and water filling and drainage equipment for filling and draining the ballast chambers is provided.
Even if the frontage is large, concrete gates can be manufactured relatively inexpensively.

[Brief explanation of the drawing]

Figure 1 is a plan view showing the installed state of the concrete gate according to the present invention, Figures 2, 3, and 4.
The figure shows a plan view of a similar concrete gate;
5 is a partially enlarged plan view of FIG. 2, FIG. 6 is a cross-sectional view taken along the - line in FIG.
The figure is a sectional view taken along the - line in Fig. 5, Fig. 8 is a sectional view taken along the - line in Fig. 5, Fig. 9 is a schematic plan view showing the water stop structure, and Fig. 10 is a cross sectional view showing the water stop member in the vertical plane. A top view, and FIG. 11 is a cross-sectional view showing the water-stopping member on the bottom.
FIG. 12 is a side view showing the connecting portion, and FIG. 13 is a plan view showing the installation guide. D...Super large dock, B...Ballast chamber, 1...
...Long concrete gate, 2...Side wall, 3...
... Bottom plate, 4 ... Bulkhead, 5 ... Gate injection and drainage pump equipment, 5A ... Drain pump, 5B ... Drain pipe, 5
C...Injection pipe, 6...Communication hole, 7...Dock drainage pump equipment, 7A...Drain pump, 7B...Drain pipe, 7C...Introduction hole, 8...Dock water injection equipment, 8
A...Opening/closing valve, 8B...Introduction pipe, 9...Water-stopping column-shaped bag, 10...Water-stopping rubber packing, 11...Water-stopping elastic material, 12...Land part, 13...Corner drop, 14...
... Guide convex plate, 15 ... Guide concave plate, 16 ... Anchor reinforcing bar, 17 ... Winch, 18 ... Water pump equipment for products, 19 ... Electricity/pump control room.

Claims (1)

[Claims] 1 A long concrete gate that can be towed and moved as a floating body by injecting water into the inside to resist seawater pressure with its weight and draining the inside, and the gate is composed of multiple units, each with a The inside of the unit is divided into a number of ballast chambers by partition walls with communicating holes at the bottom, and each unit is equipped with a ballast chamber that is equipped with an internal water supply and drainage facility for water supply and drainage inside the unit. Features a long concrete gate.