KR20030090394A - Method for constructing bank protection in soft ground of river-mouth or the seaside - Google Patents

Abstract

PURPOSE: A construction method for a revetment on the soft ground at the river mouth or the seaside is provided to construct a stabilized structure simply and economically. CONSTITUTION: The construction method for a revetment on the soft ground at the river mouth or the seaside comprises the steps of: driving many pile members(401) in two lines on the soft ground at the river mouth or the seaside; cutting off the upper end of the pile member(401) to the appointed height; fastening couplers(402) to the upper ends of the opposite two pile members(401) for dispersing bearing force evenly and keeping flatness; placing precast footing blocks(110) on the pile members to connect adjacent blocks mutually using a connector; paving ripraps(403) on all sides of pile members(401) and tamping to be leveled to the upper side of the footing block(110) placed on the pile member(401); piling up straight blocks(210) on the footing blocks(110) primarily; spreading a radial sheet(404) for landslide prevention on the backside of the primary structure and the upper side of a leveled riprap part behind the pile member(401), then placing soil(405) on the backside of the radial sheet(404); and building a revetment by piling up blocks on the primary structure to the appointed height, spreading a radial sheet(404) on the backside of the structure and placing soil(405) on the backside of the radial sheet(404).

Description

Method for constructing bank protection in soft ground of river-mouth or the seaside}

The present invention relates to a method for constructing a revetment in soft ground of a river or coast, and in particular, by constructing a revetment using a specific type of prefabricated block structure, it is structurally stable, easy to construct, and economical in terms of cost. It relates to construction method of revetment construction in soft ground.

In general, the construction of revetment facilities in soft rivers (sedimentary and sedimentary layers) in river estuaries and coastal areas presents various difficulties due to the special circumstances of the site. It is even more so below average. In addition, in carrying out such a construction, the construction cost due to the clogging, watering, opening of a work path, etc. was excessive, and many restrictions were followed in carrying out the construction.

The present invention has been made in consideration of the above matters, and is an object of the present invention to provide a method of constructing a revetment construction on a soft ground of coastal or coastal structure, which is structurally stable, easy to construct, and cost-effective.

Figure 1a is an external perspective view of the foundation block employed in the method of construction of the revetment hole in the soft ground of the estuary or coast according to the present invention.

1B is a front view of the foundation block of FIG. 1A;

Figure 2a is an external perspective view of the upright block employed in the method of construction of the revetment hole in the soft ground of the estuary or coast according to the present invention.

FIG. 2B is a side view of the upstanding block of FIG. 2A; FIG.

Figure 3a is an external perspective view of the slope block employed in the method of construction of the revetment hole in the soft ground of the estuary or coast according to the present invention.

3B is a side view of the slope block of FIG. 3A.

Figure 4 is a side view showing the state of the revetment constructed by using the upright block according to the revetment construction method in the soft ground of the estuary or coast according to the present invention.

5 is a front view of the repose ball using the upright block of FIG.

Figure 6 is a side view showing the state of the revetment constructed by using the slope block according to the revetment construction method in the soft ground of the estuary or coast according to the present invention.

<Explanation of symbols for the main parts of the drawings>

110 ... Base Block 111,211,311 ... Frustrated Cone

112 ... connection bar 113 ... insert hole

210.Upright blocks 212,213,214 Channel recesses

310 ... slope block 312, 313, 314 ... channel recess

401.Pile member 402.Connector

403 ... Seat 404 ... Seat Sheet

405 Tosa 406 Anchors

407 ... gear block mattress ... 215,315 ...

In order to achieve the above object, the method of construction of the revetment hole in the soft ground of the mouth or coast according to the present invention,

(a) type a plurality of pile members in two rows spaced apart from each other a predetermined interval on the soft ground of the bottom or coast;

(b) cutting the height of the upper end of the type pile member to be constant;

(c) fastening connectors respectively for maintaining equality of the bearing force and maintaining flatness at upper ends of two opposite pile members belonging to different rows of the pile members;

(d) mounting a precast base block on the pile members such that neighboring blocks are connected to each other by using connecting means provided on both sides thereof;

(e) compacting and laying sandstones on the front, rear, left and right surfaces of the pile members up to the height of the upper surface portion of the foundation block mounted on the pile member;

(f) first laminating and building the raft building block to a predetermined height on the mounted base block;

(g) installing a spinning sheet for preventing soil loss on the rear surface of the primary laminated structured structure and the top of the sandstone compaction flat portion behind the pile member, and filling the soil with the rear portion of the spinning sheet to backfill; And

(h) repeating the process of stacking the building block again on the first laminated structured structure to a predetermined height, installing a spinning sheet on the rear surface of the constructed structure, and filling and filling the soil on the rear surface of the spinning sheet. Its feature is that it comprises the step of completing the construction of the repose ball.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Prior to the description of the embodiment of the present invention will be described first with respect to the basic block and the reconstruction ball block (upright block and slope block) employed in the construction method of the present invention.

1A and 1B show a basic block employed in a method for constructing a repose hole in a soft ground of a mouth or a coast according to the present invention. FIG. 1A is a perspective view and FIG. 1B is a front view.

1A and 1B, the base block 110 employed in the method of constructing a revetment hole in a soft ground of a mouth or a coast according to the present invention is precast manufactured by a specific type of mold, which will be described later. A plurality of truncated cone-shaped protrusions 111 are formed for stack coupling of the building block (upright block or slope block). In addition, on both sides of the body as a means for connection with the neighboring other foundation blocks, one side is provided with a "b" shaped protrusion jaw (110t) to be stepped in a step shape, the protrusion jaw (110t) The connecting rod 112 is provided, the other side is provided with a "a" shaped space 110s for overlapping engagement with the protruding jaw portion 110t, the ceiling of the "a" shaped space is provided with the connecting rod Insertion hole 113 for insertion of the 112 is provided.

Figure 2a and Figure 2b shows an upright block which is one of the revetment ball construction block employed in the revetment construction method in soft ground of the mouth or the coast according to the present invention, Figure 2a is a perspective view, Figure 2b is a side view.

2A and 2B, the upright block 210 employed in the construction method according to the present invention is precast manufactured by a specific type of mold, similar to the foundation block 110, and is identical to the upper surface of the body. A plurality of truncated cone-shaped protrusions 211 and anchors 406 (see FIG. 4) to facilitate stacking of the block structures are formed with anchor bar fitting grooves 215 for fitting the reinforcing bars, and the truncated surface of the body A channel-shaped concave groove 212 for inserting the conical protrusion 211 is formed. In addition, the channel-shaped recessed grooves 213 and 214 are formed in front and rear surfaces of the body, respectively. Here, the reason for having the concave grooves 213 and 214 is to facilitate the handling of the block structure, while the jaw portion is formed on the upper end side of the concave groove relatively in accordance with the formation of the concave groove, It is also to obtain the effect of damping the rise of the wave by the push or the jaw due to the severe turbulence of the water.

3A and 3B show a slope block which is another one of the revetment ball construction blocks employed in the construction method of the present invention. FIG. 3A is a perspective view and FIG. 3B is a side view.

3A and 3B, the slope block 310 employed in the construction method of the present invention is basically the same as the upright block 210 in terms of its structure. However, in the case of the upright block 210, the front and rear surfaces of the body are formed perpendicular to the bottom surface, whereas in the case of the slope block 310, the front and rear surfaces of the body are predetermined relative to the bottom surface. The only difference is that the angle is formed obliquely. Reference numeral 311 denotes a truncated conical protrusion, 312, 313 and 314 denote channel recesses, and 315 denotes anchor reinforcing grooves, respectively.

Then, a process of constructing a revetment ball in a hole or a coast according to the construction method of the present invention using the basic block and the revetment ball construction block having the above structure will be described.

4 and 5 is a view showing a state in which the construction of the revetment ball using the upright block according to the construction method of the revetment ball in the soft ground of the mouth or the coast according to the present invention, Figure 4 is a side view, Figure 5 is a front view.

4 and 5, according to the method of construction of the retreat hole in the soft ground of the mouth or the coast according to the present invention, first, a plurality of pile members 401 are typed in two rows spaced apart from each other at predetermined intervals on the soft ground of the mouth or the coast. . At this time, the pile member 401 may be a log or steel pipe having a diameter of about 150mm.

When the type of the pile member 401 is completed, the height of the upper end of the type pile member 401 is cut to be constant. At this time, the position of the upper end of the cutting pile member 401 may be above the water level, or may be a point below the water level.

When the work to cut the upper end of the pile member 401 to make the height constant, the connector for maintaining evenness and evenness of the support force on the upper ends of the two opposite pile members belonging to different rows of the pile member 401 Each of the 402 is fastened. As the connector 402, a steel structure formed by welding left and right sides of a C-shaped steel is used.

When the fastening of the connector 402 is completed, the pile members are connected so that neighboring blocks are connected to each other by using the connecting means, that is, the connecting rod 112 and the insertion hole 113 provided at both sides of the foundation block 110. Mount on (401). Thereafter, the sandstone 403 is laid on the front, rear, left and right sides of the pile members 401 to the height of the upper surface portion of the foundation block 110 to be flat. Thereafter, the primary building block is constructed on the foundation block 110, for example, a building block for building the relief, for example, an upright block 210 up to a predetermined height.

When the first laminated construction of the upright block 210 is completed, the earth-soil loss preventing radiation sheet 404 is respectively installed on the rear surface of the constructed structure and the top surface of the sandstone compaction flat portion behind the pile member 401, and the radiation sheet ( The back of the 404 is filled with soil 405 is filled.

In this way, when the back filling is completed, the upright block 210 is laminated on the first stacked structure again to a predetermined height, and the spinning sheet 404 is disposed on the rear surface of the constructed structure, and the rear portion of the spinning sheet 404 is formed. Fill the soil 405 in the backfill process is repeated a plurality of times. In this series of processes, when the construction height of the revetment ball is relatively high, the anchor 406 is reinforced to the anchor reinforcing groove 215 of the upper surface of the upright block 210 to be fixed by the connecting anchor at the rear portion of the back fill of the earth and sand. . In this way, the resistance to the back earth pressure can be further increased, and the structural stability of the entire revetment can be further enhanced.

As described above, the construction of the revetment ball is completed, and as a further work, the block mattress 407 formed by interconnecting gear-type blocks over the upper surface portion of the dead stone 403 in front of the foundation block 110 and the inclined surface portion connected thereto. ) Can be installed further. This is to protect the built condition of the laid sandstone, and to prevent the loss of the sandstone by the waves in the coast.

On the other hand, Figure 6 is a view showing a state in which the construction of the revetment ball using the slope block according to the revetment construction method in the soft ground of the mouth or the coast according to the present invention.

Referring to FIG. 6, this is a case of constructing a repose ball using a slope block 310 (see FIGS. 3A and 3B), and in the case of constructing a repose ball using the upright block 210 in FIGS. 4 and 5. The construction method is basically the same. Therefore, the description of the construction process will be replaced by the description of the construction of the revetment ball using the upright block 210 of FIGS. 4 and 5. In this case, however, the slope block 310 is used as the building block for the revetment ball, and the construction wall surface is constructed to be inclined at a predetermined angle with respect to the floor surface (for example, the slope of the slope is 1: 0.3). The point is only different from the case of the construction of the revetment ball using the upright block 210 in FIGS. 4 and 5.

As described above, the method for constructing the revetment hole in the soft ground of the mouth or the coast according to the present invention uses a precast block formed with a precast block formed with protrusions and grooves for facilitating construction and coupling to each other. Because of the construction, it is possible to construct a stable revetment, which is structurally stable, easy to construct, and economical in terms of cost. Therefore, when the construction method of the present invention is applied to the soft facilities of shoreline erosion facilities and coastline erosion prevention, shores of lakes or wetlands, retaining walls, harbor docks of harbor docks, etc. It will be possible.

Claims (3)

(a) type a plurality of pile members in two rows spaced apart from each other a predetermined interval on the soft ground of the bottom or coast; (b) cutting the height of the upper end of the type pile member to be constant; (c) fastening connectors respectively for maintaining equality of the bearing force and maintaining flatness at upper ends of two opposite pile members belonging to different rows of the pile members; (d) mounting a precast base block on the pile members such that neighboring blocks are connected to each other by using connecting means provided on both sides thereof; (e) compacting and laying sandstones on the front, rear, left and right surfaces of the pile members up to the height of the upper surface portion of the foundation block mounted on the pile member; (f) first laminating and building the raft building block to a predetermined height on the mounted base block; (g) installing a spinning sheet for preventing soil loss on the rear surface of the primary laminated structured structure and the top of the sandstone compaction flat portion behind the pile member, and filling the soil with the rear portion of the spinning sheet to backfill; And (h) repeating the process of stacking the building block again on the first laminated structured structure to a predetermined height, installing a spinning sheet on the rear surface of the constructed structure, and filling and filling the soil on the rear surface of the spinning sheet. A method for constructing a revetment in soft ground of a river or coast, comprising the steps of completing the construction of a revetment. The method of claim 1, When the construction height of the revetment ball in the (h) step is relatively high, the anchor reinforcement to the revetment building block is fixed by a connecting anchor at the rear portion of the back fill of the earth and sand, the revetment construction method in the soft ground of the coast. The method of claim 1, After the step (h), further comprising the step of laying a block mattress formed by interconnecting the gear-type block over the upper surface portion of the dead stone portion of the foundation block front portion and the inclined surface portion connected thereto Construction method of revetment work on the ground.