JPH0130971B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a curtain wall type breakwater, and particularly to a method for manufacturing a curtain wall type breakwater that has a strong structure and is easy to construct.

The method for manufacturing a curtain wall type breakwater of the present invention includes the steps of driving a plurality of steel piles in two rows at a distance from each other on the seabed, joining the heads of the steel piles to each other with a binding material, and A step of pouring a lower concrete having a through hole in the head of the steel pile, and inserting and fixing the head of a curtain wall hanging down into the through hole of the lower concrete so as to be located between the rows of the steel pile. and a step of pouring upper concrete on top of the lower concrete.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Conventional embodiments and embodiments of the present invention will be described below with reference to the drawings.

A curtain wall type breakwater is a pile structure that is usually used in inland seas where the design waves are relatively small.In this structure, the steel piles used for this structure are driven up to the supporting layer, so the upper layer is covered with soft ground. There is no need to improve the soft ground even if there is a breakwater, and the lower part of the curtain is a permeable type that allows seawater to freely enter and exit, so the impact on nearby marine resources is much smaller than that of conventional gravity-type breakwaters. In recent years, it has been attracting attention for the development of shallow sea fishing grounds.

That is, in the conventional curtain wall type breakwater, as shown in Fig. 1, a plurality of steel piles 1 are separated by a predetermined distance in two rows and are driven into the seabed support layer 2 through soft ground 3, and as shown in Figs. One row of steel piles 1 as shown in
A plate-shaped curtain wall 4 is fitted into the curtain wall 4, and filling mortar concrete 6 is poured into the gap between the hole 5 of the curtain wall 4 and the outer periphery of the steel pile 1. Then, as shown in FIG. Pile 1
The head of
As shown in the figure, an upper concrete 8 is placed on top of the structure.

However, this type of structure only has the strength of a single pile until the heads are joined together as a set of piles, so after installing the curtain wall 4 and until the upper concrete 8 is placed, it is not affected by the action of wave force. It is necessary to avoid this as much as possible, and it is necessary to proceed with the work by aiming for a period when the waves are calm.

Further, although the curtain wall 4 is attached to one side of the steel pile 1, its length is not the entire length of the steel pile 1 underwater, and is not provided in a portion corresponding to the lower part h. Therefore, this steel pile 1 has an upper part with high rigidity and a lower part with low rigidity, and there is a drawback that stress concentration occurs in the steel pile 1 in the h part with low rigidity, making it structurally weak.

In the present invention, in order to eliminate such drawbacks, as shown in FIGS. 6 and 7, the steel piles 1 are first driven, and then their heads are joined by a fastening steel member 7 without attaching a curtain wall. Then, lower concrete 9 is placed on top of this.

This lower concrete 9 is provided with a vertical through hole 10, and the head of the curtain wall 11 is inserted from below the lower concrete 9 through this through hole 10, and the flange formed in the middle part of this curtain wall 11 is inserted. Section 12 and curtain wall 11
The lower concrete 9 is fixed from above and below by a locking mechanism 13 consisting of a bolt whose lower end is embedded in the top of the bolt and a plate-shaped body that engages with the upper surface of the lower concrete 9 fixed to the bolt by a nut. The curtain wall 11 is fixed to the lower concrete 9 by clamping.

Also, the gap between the through hole 10 and the curtain wall 11 is filled with mortar.

Next, an upper concrete 14 is placed on top of the lower concrete 9 to form a curtain wall type breakwater.

Since the method for manufacturing the curtain wall type breakwater of the present invention is as described above, it has the following great advantages.

The curtain wall 11 is installed after a plurality of steel piles are connected to each other, so that it is less affected by wave force during construction of pile sets. Therefore, the number of working days will increase when constructing pile piles.

Since the installation work of the curtain wall 11 can be carried out on the completed lower concrete 9, the work can be carried out safely, quickly and precisely.

Since the embankment body is completed almost at the same time as the installation of the curtain wall 11, the damage rate during construction is reduced in case of sudden changes in weather.

The steel pile 1 has no parts where stress concentration occurs and has high mechanical strength.

[Brief explanation of drawings]

1, 2, 4, and 5 are explanatory diagrams of the construction process of a conventional breakwater, FIG. 3 is a plan view of the curtain wall, FIG. 6 is a front view of the breakwater of the present invention, and FIG. The figure is a perspective view thereof, and FIG. 8 is a perspective view of the curtain wall. 1... Steel pile, 2... Seabed support layer, 3... Soft ground, 4... Curtain wall, 5... Hole, 6...
Filled mortar concrete, 7... Bonded steel material, 8
... Upper concrete, 9 ... Lower concrete, 10 ... Through hole, 11 ... Curtain wall, 12 ... Flange part, 13 ... Locking mechanism, 1
4...Top concrete.

Claims (1)

[Claims] 1. A process of driving a plurality of steel piles in two rows at a distance from each other on the seabed, a process of connecting the heads of the steel piles to each other with a binding material, and having a through hole in the head of the steel piles. a step of placing a lower concrete; a step of inserting and fixing the head of a curtain wall hanging down into a through hole of the lower concrete so as to be positioned between the rows of the steel piles; A method for manufacturing a curtain wall type breakwater, characterized by comprising a step of pouring concrete.