JPS5861087A - Constructing method of dock using hull - Google Patents

Abstract

PURPOSE:To shorten the period of construction at a construction site by removing an upper deck of a disused hull and transversal bulkheads in the hull for cutting out a block of a U-shaped section and setting up this block at the construction site of a dock. CONSTITUTION:An upper deck of a center tank part of a hull is removed, and transversal bulkheads in the center tank are cut off. Then, a block A of an U- shaped section is cut out by a necessary length with wing tanks 2 left on both sides. Meanwhile, at a construction site of a dock, a foundation 1 is constructed at the bottom of the water for a dock in the water area, and a ground foundation is excavated in accordance with the size of the U-shaped block A for a dock on land. Then, the above-said block A is brought forth, and set up on the foundation 1. Wing tanks 2 of the block A are filled with a filler 3 of concrete or the like. Subsequently, a gate 4 is held to erect at a dock entrance of the block A, and the water in the block A is drawn out. A bottom plate 5 is provided on the bottom of the hull together with a dock head 6.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of constructing a dock using a ship's hull.

Traditionally, when building a dock, the ground was excavated if it was on land, and if it was in a body of water, the foundation ground was created on the waterbed ground that had been drained by putting side walls around it and making temporary cofferdams. Because the culvert bottom, culvert walls, and culvert head are partially constructed using steel materials, the construction period is quite long, and a considerable amount of concrete, stone walls, 4J steel, etc. are used. The cost of materials and labor costs were enormous.

In the present invention, a block with a concave cross section is cut out from an unnecessary ship (by removing the deck and the transverse bulkhead of the ship) and used as a single kneading block.
The conventional 91:71r huge interest cost can be reduced to 1-I, and the foundation ground created at the construction site by continuously using the concave blocks manufactured at the shipyard or on-site etc. 1. In particular, the present invention provides a dock construction method that can shorten the on-site construction period.

The dock is roughly divided into two parts (-): after the ship is accommodated, the water in the ditch is closed, and the structure that supports the reaction force of the external water pressure is located in the The 11th part of the culvert, the culvert head which is the rear part of the dock,
It is composed of four parts: the main body wall, which resists the surrounding upper pressure or water pressure, and the bottom part, which supports and supports the ship. Rivers, lakes and marshes 4. When building in adjacent land of p, lr + j + river, 6111
1. There are cases where it is constructed in a body of water near the boundary line between a swamp, etc. and land.

When building on land (after excavating the ground, use 21-crete, right-handed, and steel-bound concrete to construct 1' 1 bottom by force type,
Constructed using methods such as semi-gravity type, pile anchor set, pumping pressure isolation type, etc. The east wall and culvert head are gravity type, buttress type concrete 1/retaining wall, open caisson type, pneumatic caisson type,
Straight steel pipe sheet pile continuous wall type, vertical steel sheet pile continuous wall type, vertical continuous cast-in-place method, JfJ, etc. It is usually constructed by a well structure. In addition, when building in a body of water, we use the caisson construction method, in which a beam-wall embankment is first wrapped around the culvert to provide a temporary cofferdam for the 1st section of the channel, and the interior is dried up before the beam bottom is constructed. Then, I +t i:t ) U-
- 1F from the bottom of the son to the foundation ground: 4 Noah 11 using the air construction method
The method used is to lower the ditch, replace it with concrete, build the east wall of the ditch, dry up the inside, and install a bottom slab.

The present invention G provides a method for constructing an inexpensive dock in a short period of time using a ship's hull instead of such conventional methods.
An example of this will be explained below with reference to the drawings.

First, remove the upper deck of the center tank part of the hull, remove the cross section 19...
At the construction site, put the bridge A on the dock in the water area, and place it on the bottom of the foundation. The construction of / was carried out / r 1.1 · within the land θ)I in the ivy -) at 6
J1 concave type I-1 Tsuku A and children's assistance-) 7-JIS for personality
(JfJ board excavation 71/'l: 11 o, then]
1) Tow the 1 rif l'Junk A and (lift it with a J crane and sink it into the ground/G) and pull it in. Next, ground 1
- ni 1 iJtabl! Into the tank tank of Tsuku A: Put the filling 3 of Junkri 1st class. ≠ 114 steel plate or]] Formed with concrete 1/1: U-, -1・
Then, push the cable directly to the 11th part of the drain and the part where it should be connected by the water pressure from the side.
, state 6-hold 1, IJ sa- [J Tebu I cock A inside (+
Drain the water from the vessel 111, and form the bottom plate j with stomach recesses on the ship 11 [-, etc., and r+) to form the head part O.

In addition, the filling 3 and the production of the bottom plate and vl-head part A are performed in advance on the land 1-)-(:l:;In C1-/rl-tuk A is installed on the ground/]-. G
1-shite(, good.

In addition, when building a dock with a large internal width, the hull should be cut out once and a steel plate added to obtain the necessary dock width. It is also possible to construct the most important culvert of the dock [only one part of the vertical and horizontal doorstops is constructed using short gate-shaped blocks A, and most of the east wall is made of the same concrete structure as before. can.

In addition, the wing tanks on both sides can be used as a machine room to house power piping, wiring tunnels, winches, pumps, etc., and can also be used as buoyancy tanks, allowing for large-scale ground reinforcement even in areas with weak subsurface soil strength. There is no need to do this, and it can be moved and temporarily placed as a mobile dock. In addition, when producing the bottom version j, the bottom play)
7th job! A space is formed below the plate 7 at the height f = i Dj, and this space can be used as a removal pit for a repair ship's propeller or sonar, or used as a buoyancy tank or ballast tank for a mobile dock. It becomes possible to tow and equipment as a.

In this way, the present invention makes it possible to construct a dock by using an unnecessary hull such as a used ship.
The original ground σ) III at the dock construction site
Since the 1j1 and 11 ribs can be easily manufactured from the ship's hull without having to carry out excavation and preparation of the underwater foundation, the construction period for the entire dock can be shortened. Also, depending on the type of hull, IJTsuku can be used up to a much larger one compared to the conventional caisson tongue, and it is not affected by crowds or waves, so
Iil 7 scary to 11 swords! By entering i#shiteI and J, σ + h1'fi I' in the 41'η construction Di field,
It has been shortened to ``m1'' and ``muinu i+'', and the danger of ``-1-'' has been reduced to 4.

[Brief explanation of the drawing]

Fig. 1 shows an example of constructing a 1゛ ivy on water-filled ground 1- by the method of the present invention; Fig. 2 41
This is a map of the same city. Code explanation A...Concave block //'4111! A ground)
・・Wing tank 3・・Filling ≠・・Gate j・・Bottom plate -B− 2・・x m part 7・・Bottom plate 'I'f 6
'l Applicant Kokudo Sogo Construction Co., Ltd. 7- Figure 1 Figure ε

Claims (1)

[Claims] Remove the upper deck of the hull and the transverse bulkhead inside the hull, cut out blocks with a concave cross section to the required length, and install the concave blocks at the dock construction site, such as the underwater foundation ground or excavation site in the original ground. Construction of a dock using a hull that is characterized by