WO2008023939A1

WO2008023939A1 - Triangular pyramid type ferroconcrete block for preventing the coastal erosion

Info

Publication number: WO2008023939A1
Application number: PCT/KR2007/004029
Authority: WO
Inventors: Yi-Dong Park
Original assignee: Yi-Dong Park
Priority date: 2006-08-24
Filing date: 2007-08-23
Publication date: 2008-02-28
Also published as: CN101356320A; KR100662627B1; CN101356320B

Abstract

A reinforced concrete triangular pyramid block for preventing the coast or the shore from being eroded by wave energy. The block has a regular triangular pyramid shape, is made of reinforced concrete, and includes supporting globes 10 and 10' placed at vertices of the triangular pyramid block; supporting rods 20 and 20' connecting the supporting globes 10 and 10' to each other, thereby forming the triangular pyramid shape; a central globe 30 located in the center of the block; and reinforcing rods 40 and 40' connecting middle portions of the supporting rods 20 and 20' to the central globe 30.

Description

TRIANGULAR PYRAMID TYPE FERROCONCRETE BLOCK FOR PREVENTING THE COASTAL EROSION

Technical Field

[1] The present invention relates to a reinforced concrete triangular pyramid block for preventing the coast or the shore from being eroded by wave energy. More particularly, the present invention relates to a reinforced concrete triangular pyramid block, which is designed to effectively resist against wave energy, so that two to four rows of the pyramid blocks can be arranged on the sea bottom of the coast or the shore, which is subject to erosion, in order to reduce or decrease the strength of wave energy, thereby preventing the sea bottom of the coast or the shore from direct erosion as well as the beach from erosion.

[2]

Background Art

[3] As well known to those skilled in the art, the erosion of the coast takes place for all seasons by local factors due to weather conditions, such as rainstorm and tsunami, and long term factors due to continuous wave energy and the difference between the rise and fall of the tide. In particular, wave energy caused by north wind or south wind in the winter increases the amount of erosion.

[4] As a conventional structure for preventing the coast from erosion, a plurality of tetrapods or tripods are placed near a tide embankment or a breakwater at the entrance of a port, irregularly stacked on the sea bottom or over the sea of the coast, in order to prevent the shoreline or the beach from erosion. The weight of each of the tetrapods ranges from 5 to 100 tons.

[5] Describing the structural shape of the tetrapods, conical horns (or legs) radially extend in four directions from the center. While heavy equipment (e.g., a crane), which clamps the tetrapod, is used to carry and transport the tetrapods, it is not easy to clamp the tetrapods due to the structural shape thereof. Since the clamped state is also instable, the tetrapods can frequently drop when they are being carried, thereby causing accidents to workers on the ground or in the sea.

[6]

Disclosure of Invention

Technical Problem

[7] The present invention has been made to solve the foregoing problems with the prior art, and therefore an object of the present invention is to provide a regular triangular pyramid block, which is structurally stable, and can resist against wave energy and correctly maintain the center of gravity as well as disperse, reduce and diffract the destructive force of wave energy, so that sea cliffs, wave-cut terraces and coastal terraces are not formed by beach erosion. Since the regular triangular pyramid block is uniformly manufactured, it is possible to easily carry and transport the regular triangular pyramid block, thereby improving the efficiency of the operation of constructing the regular triangular pyramid block on the coast or the shore. Furthermore, even if the regular triangular pyramid block is pushed by wave energy and turned in directions, the regular triangular pyramid block can maintain the regular triangular pyramid shape, and thus the structure of the pyramid blocks can realize excellent resisting force against wave energy.

[8]

Technical Solution

[9] According to an aspect of the present invention for realizing the object, the present invention provides a block for preventing the coastal area and the shore area from erosion. The block has a regular triangular pyramid shape, is made of reinforced concrete, and includes supporting globes 10 and 10' placed at vertices of the triangular pyramid block; supporting rods 20 and 20' connecting the supporting globes 10 and 10' to each other, thereby forming the triangular pyramid shape; a central globe 30 located in the center of the block; and reinforcing rods 40 and 40' connecting middle portions of the supporting rods 20 and 20' to the central globe 30.

Advantageous Effects

[10] As set forth above, the regular triangular pyramid block of the present invention can achieve resisting force against wave energy, which is superior to that of the conventional tetrapods, thereby efficiently preventing the coast from erosion. The present invention can also maintain a structurally stable state facilitate transporting and constructing operations. Furthermore, since the regular triangular pyramid block of the present invention does rarely change its position after construction, it is possible to reduce the maintenance cost.

[H]

Brief Description of the Drawings

[12] FIG. 1 is a perspective view illustrating the overall construction of the present invention;

[13] FIG. 2 is a side elevation view and a fragmentary cross-sectional view of the present invention;

[14] FIG. 3 is a configuration view illustrating an application of the present invention; and

[15] FIG. 4 is a plan view illustrating applications of the present invention, which are arranged on coastal areas. [16]

Best Mode for Carrying Out the Invention

[17] Hereinafter the construction and operation of the present invention will be described more fully with reference to the accompanying drawings.

[18] FIG. 1 is a perspective view illustrating the overall construction of a regular triangular pyramid block of the present invention, which includes supporting globes, a central globe and supporting and reinforcing rods connecting the supporting and central globes to each other, FIG. 2 is a side elevation view and a fragmentary cross- sectional view of the present invention, illustrating the side configuration of the triangular pyramid block and the cross section of the supporting and central globes and the supporting and reinforcing globes, FIG. 3 is a configuration view illustrating an application of the present invention, in which two rows of triangular pyramid blocks of the present invention are arranged on a coast or a shore, and FIG. 4 is a plan view illustrating applications of the present invention, including rows of triangular pyramid blocks of the present invention, in which one triangular pyramid block assembly of the present invention is arranged around rocks of the coast and another triangular pyramid block assembly of the present invention is arranged on a sandy beach and a port (harbor) of the shore.

[19] The present invention provides a block assembly, which is arranged in order to prevent a coastal area or a shore area from erosion.

[20] The block assembly consists of blocks A and A' each of which is in the shape of a regular triangular pyramid. In the triangular pyramid block A or A' supporting globes 10 and 10' are placed at vertices, and supporting rods 20 and 20' connect the supporting globes 10 and 10' to each other, thereby forming a regular triangular pyramid. A central globe 30 is located in the center of the block, and reinforcing rods 40 and 40' connect the middle portions of the supporting rods 20 and 20' to the central globe 30.

[21] Each of the supporting globes 10 and 10' and the central globe 30 is manufactured by arranging reinforcement bars 50 and 50' in the form of double circles, and pouring concrete C on the reinforcement bars 50 and 50', so that concrete C surrounds the reinforcement bars 50 and 50'. Each of the supporting rods 20 and 20' and the reinforcing rods 40 and 40' is manufactured by arranging reinforcement bars 50 and 50' in the form of double circles, and pouring concrete C on the reinforcement bars 50 and 50', so that concrete C surrounds the reinforcement bars 50 and 50'.

[22] The block assembly including the blocks A and A' is arranged on the coast or the shore by arranging the blocks A and A' in two to four rows so that each block A or A' is in face contact with adjacent blocks. [23] In the drawings, reference sign L indicates the coast, reference sign L' indicates isles or rocks, reference 1 indicates contour lines, and reference numeral 2 indicates contour lines in deposition areas.

[24] In the present invention configured as above, the blocks A are manufactured in the shape of a regular triangular pyramid as shown in FIGS. 1 and 2, which can improve resisting force against wave energy in order to efficiently destroy or reduce the force of wave energy, thereby preventing the coast and the shore from erosion. The block A is manufactured to have the most stable configuration, so that it can be easily transported and constructed. The block A can always maintain this configuration even if it is turned over by wave energy. As a result, the block A assembly can continuously resist against wave energy.

[25] The blocks A and A' re manufactured to have a regular triangular pyramid shape.

That is, a regular triangular pyramid framework is formed by locating the supporting globes 10 and 10', it vertices of the regular triangular pyramid, and connecting the supporting globes 10 and 10' to each other using the cylindrical supporting rods 20 and 20'.

[26] The central globe 30, shaped the same as the supporting globes 10 and 10', is located in the center of the regular triangular pyramid shape, and the reinforcing rods 40 and 40' connect the central globe 30 to the middle portions of the supporting rods 20 and 20', which are connected to the supporting globes 10 and 10'.

[27] The block A is manufactured to have the regular triangular pyramid shape, which can maintain structural stability. This block shape also has excellent resisting force against wave energy, which can disperse, reduce and diffract wave energy. Since the center of gravity of the block is always maintained at a single point, it is possible to e asily carry and arrange the block by clamping any one of the vertices. The block has excellent structural stability and resisting force against wave energy, so that the block can always maintain its shape even if it is turned over by wave energy.

[28] In the blocks A and A', each of which is a reinforced concrete block, the supporting globes 10 and 10' and the central globes 30 are manufactured by arranging the reinforcement bars 50 and 50' in the form of double circles, and pouring concrete C on the reinforcement bars 50 and 50'. The supporting rods 20 and 20' and the reinforcing rods 40 and 40' are manufactured by arranging the reinforcement bars 50 and 50', and pouring concrete C on the reinforcement bars 50 and 50'.

[29] Each of the blocks A and A is as a unitary body, which is manufactured by arranging the reinforcement bars 50 and 50', and then pouring concrete on the reinforcement bars 50 and 50'.

[30] As shown on the plane of FIGS. 3, when the blocks A and A are installed on the sea bed of the coast or shore, the blocks are sequentially arranged in a row. That is, erect and inverted regular triangular pyramids alternate with each other. In the case of two to four rows, the blocks are arranged in the same fashion, so that the resultant structure can resist against wave energy.

[31] As shown in FIG. 4, the present invention is installed on the coast or the shore to resist against wave energy, which is caused, for example, by rainstorms, bad weather, continuous waves, the ebb and flow and winter wind.

[32] In general, erosion areas 1, which are sea bottom or beach areas subject to erosion, and deposition areas 2, in which deposits accumulate, are formed around the coast L and the isles or rocks L'.

[33] Contour lines are drawn in order to indicate the amount of erosion in the erosion areas 1 and the amount of deposition in the deposition areas. The blocks A and A' of the present invention are installed in the erosion areas to resist against wave energy, and more particularly, stacked in two to four rows according to the characteristics of the corresponding area. The blocks installed in this fashion can disperse, reduce and diffract wave energy, thereby preventing the coastal areas or the shore areas from erosion.

[34]

[35] Although the preferred embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the present invention as disclosed in the accompanying claims.

[36]

Claims

[1] A block for preventing a coastal area and a shore area from erosion, comprising a regular triangular pyramid shape and made of reinforced concrete, wherein the triangular pyramid block includes: supporting globes (10, 10') placed at vertices of the triangular pyramid block; supporting rods (20, 20') connecting the supporting globes (10, 10') to each other, thereby forming the triangular pyramid shape; a central globe (30) located in center of the block; and reinforcing rods (40, 40') connecting middle portions of the supporting rods (20,

20') to the central globe (30). [2] The block according to claim 1, wherein each of the supporting globes (10, 10') and the central globe (30) includes reinforcement bars (50, 50') arranged in form of double circles and concrete (C) poured on the reinforcement bars (50, 50'), and wherein each of the supporting rods (20, 20') and the reinforcing rods (40, 40') includes reinforcement bars (50, 50') arranged in form of double circles and concrete (C) poured on the reinforcement bars (50, 50'). [3] The block according to claim 1, comprising a plurality of the blocks (A, A') arranged in two to four rows, wherein each of the blocks (A, A') is in face contact with an adjacent one of the blocks (A, A').