JPS60246910A - Method of building underwater concrete block-coupled wall body - Google Patents

Abstract

PURPOSE:To rapidly and safely build a concrete wall body such as revetment, by a method wherein a master pile is driven in a position where revetment is built, and the master piles are interposed through their respective vertical through-holes in each of blocks to pile up the blocks in a staggering manner. CONSTITUTION:A sea bottom ground 1 is excavated down to a given depth (h) of embedment to ensure foundation ground 1, and a master pile 2, such as steel pipe piles, is driven in each given position. The master piles 2 are respectively interposed through plural through-holes 3a in the block 3 to pile up the blocks 3 in a staggering manner, and a joint part between the blocks is filled with mortar. After a wall body is constructed by means of the blocks 3, given reclamation or filling is effected, and top concreting 4 is conducted to complete revetment.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of constructing underwater concrete walls used for constructing diversion banks, quays, levees, dolphins, etc.

Conventionally, when building dikes and quays using steel sheet piles,
After driving the sheet piles, underwater and above-water forms were assembled and construction was carried out using cast-in-place concrete.

For this reason, it is susceptible to the effects of weather and sea conditions, and assembly of the frame in areas with rough waves is particularly likely to result in spillage and deformation.
There were problems with quality, increased construction costs, and extended construction times.

The present invention was proposed in order to solve such problems, and after driving and planting parent piles at predetermined positions in the foundation ground, a plurality of vertical holes are drilled between the same parent piles. Concrete blocks having the same structure are sequentially fitted and layered, and the joints of the concrete blocks in each layer are positioned vertically with the joints of concrete blocks in the upper and lower adjacent layers of the same layer, so as to form a wall in water. This relates to an underwater concrete block connecting wall construction method characterized by:

Alternatively, in the present invention, parent piles are driven at predetermined positions in the Oboro ground and planted on the same ground, and precast concrete blocks having a number of vertical holes are sequentially inserted and layered between the same parent piles. The walls were constructed using the same concrete blocks. Therefore, according to this method, instead of assembling underwater and above-water formwork as in conventional construction methods, a vertical hole in a concrete block is inserted as a guide for the parent pile to construct a wall structure, resulting in labor savings. This will shorten the construction period and reduce construction costs.

Further, according to the present invention, the parent pile serves as a guide member during masonry of the concrete block, and also serves as a reinforcing member for the wall of the concrete block. In addition to this, by layering each concrete block in a staggered manner.

Since the joints of the concrete blocks of the upper and lower layers are located side by side in the vertical direction, a structurally reliable underwater concrete block connecting wall can be constructed.

The present invention will be described below with reference to the illustrated embodiments.

The underwater ground (1) is excavated to a predetermined penetration h to secure the foundation ground, and parent piles (2) made of steel pipe piles or the like are driven and planted at each predetermined position in the ground (1).

Next, a plurality of vertical holes (3a) are formed in the protrusion of the parent pile (2).
Concrete blocks (3) having the following shapes are alternately fitted and layered in a staggered manner, and the joints of the blocks are filled by pouring mortar.

After the wall is constructed using concrete blocks (3), a specified amount of reclamation or filling is performed, and crown concrete (4) is applied to construct an underwater concrete wall. (See Figure 1) If necessary, reinforcement with tie ropes or the like will be performed prior to reclamation.

Note that FIG. 2 shows a corner of an underwater concrete wall, and an L-shaped concrete block (3) having a vertical hole (3a) in the corner is used.

In addition, the end faces of each of the concrete blocks (3) (3+) have vertical grooves (
3b) (3b) is provided. Furthermore, the concrete block (3) is provided with a stepped portion (3C) on its joining end face, and the stepped portion (3C) of the adjacent block (3) engages with each other as a compatible block. The strength may be increased by JvI. (Figure 8 and r4
(See Figure 59) Furthermore, as shown in Figure 10, concrete block (3)
Even if the water stop plate (5) is buried so as to protrude from the vertical groove (3b), the tip of the water stop plate (5) is crimped to the adjacent concrete block (3) to prevent suction. good.

In addition, the block +3+ (310 has concave holes (6
), and the curved part of the same block (31 (31) with an inverted U-shaped embedded metal fitting (7J) protrudes above the recess (6), and the skeleton wire (8) is hung over the protruding curved part and concrete This is for transporting and installing blocks. (See Figures 7A11 and 12) Although the present invention has been described above with reference to embodiments, the present invention is of course not limited to such embodiments. Various modifications may be made to the configuration G1 without departing from the spirit of the invention.

[Brief explanation of the drawing]

FIG. 1 is a slope view of an underwater section constructed by the method of the present invention, FIGS. 3 and 41, and FIG. 7
The figures are a plan view of a corner concrete IJ-do block, Fig. 8 and Fig. 9 are plan views showing other embodiments of the concrete block, and Fig. 10 is a block in a concrete wall equipped with a suction prevention mechanism. A cross-sectional plan view showing the joint area,
FIG. 11 and FIG. 12 are longitudinal cross-sectional views showing how the skeleton wire is attached to the concrete block, respectively. (1)...Underwater ground, (2)...Main pile, (31...
・Concrete block, (3a)... Vertical hole, (3
)... Corner concrete block, (3a)...
Vertical hole. Representative Patent Attorney Kai Fumi Okamoto and three others Figure 1 Figure 4

Claims (1)

[Claims] After driving and planting parent piles at predetermined locations in the foundation ground, concrete blocks with multiple vertical holes are successively fitted and layered between the same parent piles, so that the joints of concrete blocks in each layer are in the same layer. An underwater concrete block connecting wall construction method characterized by constructing a wall in water by positioning it in the vertical direction with a joint of concrete blocks in vertically adjacent layers.