Method for constructing and repairing wall structures using jointed concrete blocks

Abstract

To rigidly join concrete blocks and easily replace broken concrete blocks in a wall structure using concrete blocks.SOLUTION: A wall structure is constructed by repeating a step of arranging concrete blocks 10 provided with joints so as to be parallel to each other to join with each other by using detachable joints, and detachably attaching sealing members to a joint portion 20. When a part of the concrete blocks 10 is broken, the wall structure is repaired by detaching the sealing member and the joint attached to the joint portion 20 between the broken concrete block 10 and a neighboring concrete block 10, removing the broken concrete block 10, and installing a new concrete block 10 and detachably attaching the sealing member to the joint portion 20.SELECTED DRAWING: Figure 5

Description

[Technical field]

[0001] The present invention relates to a method for constructing and repairing wall structures using jointed concrete blocks, for example, a method for constructing or repairing wall structures such as revetments and retaining walls by connecting adjacent concrete blocks using cotter joints. [Background technology]

[0002] Wall structures such as revetments and retaining walls are constructed on natural slopes such as riverbanks and coastal slopes, embankments and cuts in order to stabilize the lower part of the slope, prevent small-scale collapses, block collapsed soil, reinforce embankments, and protect slopes. Revetments and retaining walls are generally constructed by stacking multiple concrete blocks side by side. There are various shapes of concrete blocks for constructing revetments and retaining walls, but at present, when they are stacked side by side, adjacent blocks are not firmly connected to each other using connectors.

[0003] For example, a revetment is a structure built to protect a riverbank from erosion and scouring caused by running water, and is composed of a slope protection work and a foundation work, and if necessary, foot protection work, crown work, crown protection work, edge stop work, rubbing work, etc. Of these structures, concrete blocks are used especially for the slope protection work.

[0004] As mentioned above, when constructing revetment walls, retaining walls, etc., adjacent blocks are not firmly connected to each other. Therefore, due to flooding or heavy rain, the connections between adjacent blocks may loosen, and the revetment walls, retaining walls, etc. may collapse.

[0005] Some precast concrete blocks used to construct structures are provided with joints such as cotter joints, which are used to firmly connect adjacent precast concrete blocks (see, for example, Patent Documents 1 and 2).

[0006] The technology described in Patent Document 1 relates to a cotter-type joint device for segments used in the lining of a shield tunnel. This cotter-type joint device for segments is designed to connect adjacent segments by fitting cotters into opposing cotter brackets when joining segments in the axial and ring directions of a tunnel.

[0007] The technology described in Patent Document 2 relates to a flexible joint structure that connects concrete blocks together. In this flexible joint structure, an insert nut is embedded from the end face side of a concrete block in a direction approximately parallel to the wall surface of the concrete block. Then, the end faces of adjacent concrete blocks are placed facing each other, and a bolt is screwed into the insert nut between the end faces of both concrete blocks to form a flexible joint. to The joint end of the concrete block is joined to the end face of the concrete block.

[0008] Furthermore, for decks used in roads, a technology has been disclosed in which adjacent decks are connected using cotter joints (see, for example, Patent Document 3). The technology described in Patent Document 3 involves lining up multiple concrete precast decks with asphalt paving in the bridge axis direction. Then, adjacent concrete precast decks are temporarily fixed together with cotter joints to construct a road. After that, the gaps between the concrete precast decks are filled with grout material to permanently fix the concrete precast decks.

[0009] If a deteriorated concrete precast floor slab is present between sound concrete precast floor slabs, first, the H-shaped cotters of the cotter joints that connect the deteriorated concrete precast floor slab to the sound concrete precast floor slabs on both sides are cut with a concrete cutter to release the connection by the cotter joints. After that, the deteriorated concrete precast floor slab is lifted and removed with a crane or the like, and the H-shaped cotters and grout material remaining on the connecting end of the sound concrete precast floor slab are completely removed. Next, a replacement concrete precast floor slab with a C-shaped joint fitting is installed at the site of the removal, and the H-shaped cotters are filled with grout material and a water-stopping material is filled on top of the grout material to perform joint construction, thereby replacing the deteriorated concrete precast floor slab with a new concrete precast floor slab. [Prior art documents] [Patent documents]

[0010] [Patent Document 1] Utility Model Registration No. 2546822 [Patent Document 2] JP 2007-32042 A [Patent Document 3] JP 2014-177766 A Summary of the Invention [Problem to be solved by the invention]

[0011] However, the technology described in Patent Document 1 is intended for use in segments used in the lining of shield tunnels, and is not intended for application when constructing wall structures such as revetments, retaining walls, etc. Also, although there is technology for connecting adjacent concrete blocks with joints such as cotter joints, conventional technologies, including the technology described in Patent Document 1, cannot be directly applied to revetments exposed to water flow, retaining walls subjected to earth pressure from the ground, etc.

[0012] Decks are a part of road structures and are used specifically for roads. Roads are generally constructed by providing a roadbed, a roadbed made of crushed stone, etc., and a base and surface layer made of asphalt mixture or concrete on top of the road body. Decks include RC decks, steel decks, composite decks, I-beam steel lattice decks, open grating decks, etc.

[0013] This deck is a component that, when subjected to a load from a vehicle traveling on the road, transmits the load to the main girders, etc., without causing deformation that would impede the vehicle's drivability. In other words, the deck is a structure that transmits the load from above to below. And, since the road is constructed by applying asphalt mixture, concrete, etc., on top of the deck, the deck can be said to be a structure buried within the road.

[0014] Therefore, in order to replace part of the deck, the asphalt mixture, concrete, etc. applied on top of the deck must be removed.

[0015] On the other hand, revetments are structures that directly withstand the pressure of water flow and prevent the collapse of embankments due to scouring, while retaining walls are structures that directly withstand the earth pressure from the ground and prevent the collapse of slopes. In other words, the wall structures of revetments and retaining walls are in direct contact with the water flow and the ground and directly withstand their pressure.

[0016] In this way, general concrete blocks and decks and wall structures such as revetment walls and retaining walls have different structural differences due to their different roles as structures, and they require different design, construction, management, etc. Therefore, the technology used for general concrete blocks and decks cannot be applied as is to wall structures such as revetment walls and retaining walls.

[0017] The present invention has been proposed in view of the above circumstances, and is directed to a method for constructing a revetment wall, a retaining wall, etc. ofThe object of the present invention is to provide a method for constructing and repairing a wall structure using concrete blocks with joints, which can firmly connect the concrete blocks in a wall structure using concrete blocks that directly withstands water pressure and earth pressure from the ground and is susceptible to backfill material flowing out due to scouring, etc., and further, which can easily replace damaged concrete blocks. [Means for solving the problem]

[0018] The method for constructing and repairing a wall structure using concrete blocks with joints according to the present invention (hereinafter sometimes abbreviated as the method for constructing and repairing a wall structure) has the following features in order to achieve the above-mentioned object. That is, the method for constructing and repairing a wall structure according to the present invention is broadly divided into a step of constructing a wall structure by arranging and joining concrete blocks, and a step of repairing the wall structure by replacing damaged concrete blocks.

[0019] The process of constructing a wall structure by arranging and connecting concrete blocks includes the steps of arranging concrete blocks with joints next to each other, connecting adjacent concrete blocks with detachable joints, and connecting the joints, which are recesses formed opposite the adjacent concrete blocks, to the joints. Using a filler and an opening and closing lid that function as a sealing member, The wall structure is constructed by repeatedly carrying out the process of sealing the joints and sealing the joints. Sealing the joints means closing off the joints embedded in the concrete blocks in a watertight manner.

[0020] In the process of replacing damaged concrete blocks and repairing a wall structure, if a part of a concrete block constituting a wall structure is damaged, the joint consisting of a recess provided facing the damaged concrete block and the adjacent concrete block is kept in a sealed state. Remove the opening and closing cover and remove the filling material from the recess.a step of removing the damaged concrete block; a step of installing a new concrete block in place of the removed concrete block; a step of connecting the newly installed concrete block and the adjacent concrete block with a detachable joint; and a step of connecting the newly installed concrete block and the adjacent concrete block with a recessed portion facing the newly installed concrete block and the adjacent concrete block with a detachable joint. Using a filler and an opening and closing lid that function as a sealing member, and sealing the joint to repair the wall structure. In the process of sealing the joint when constructing or repairing the wall structure, the recess is filled with a flexible filler material made of at least one of rubber, plastic and gel material that can be filled and easily removed to seal the recess, and a blocking lid that is detachable from the recess to cover the recess and seal the recess is attached.

[0021] In the above-mentioned method for building and repairing a wall structure, it is possible to use cotters as joints. In this case, the ends of the concrete blocks are fitted with cotters. Receptacle The sealing member is detachably attached by a cotter. Receptacle It is a joint recess with a recessed part.

[0022] The above-described methods for constructing and repairing wall structures may also be suitably used for revetment walls. Effect of the Invention

[0023] According to the method for constructing and repairing a wall structure of the present invention, in a wall structure using concrete blocks, such as a revetment wall or retaining wall, which directly withstands water pressure and earth pressure from the ground and is subject to the risk of backfill material being washed away due to scouring, etc., adjacent concrete blocks are connected to each other using joints, making it easy to construct the wall structure, shortening construction time, and reducing construction costs.

[0024] In addition, instead of simply stacking the concrete blocks, adjacent concrete blocks are connected to each other using joints, making it possible to firmly connect the concrete blocks.

[0025] Furthermore, because adjacent concrete blocks are connected with joints, if one of the concrete blocks constituting the wall structure is damaged, the wall structure can be easily repaired by simply removing the joint and replacing the damaged concrete block with a new one, thereby shortening the repair time and reducing the repair cost.

[0026] In addition, by using cotters as joints, concrete blocks can be easily connected and removed.

[0027] The method for constructing and repairing a wall structure according to the present invention exhibits the excellent effects unique to the present invention described above, and is therefore particularly suitable for use on revetment walls which directly bear water pressure and are at risk of having backfill material washed out due to scouring, etc. [Brief description of the drawings]

[0028] [Figure 1] 1 is a flowchart showing the steps (construction process) of a wall structure construction and repair method according to the present invention. [Diagram 2] 1 is a flowchart showing the procedure (repair process) of the wall structure construction and repair method according to the present invention. [Diagram 3] 1 is a schematic diagram showing an example of a joint structure and a sealing member used in the method for constructing and repairing a wall structure according to the present invention; [Figure 4] 1A to 1C are explanatory diagrams of the construction process of a wall structure in the wall structure construction and repair method according to the present invention. [Diagram 5] FIG. 2 is an explanatory diagram of a wall structure repair process in the wall structure construction and repair method according to the present invention. [Figure 6] 1 is a perspective view of a revetment wall to which the method for constructing and repairing a wall structure according to the present invention is applied; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0029] Hereinafter, a method for constructing and repairing a wall structure using jointed concrete blocks according to an embodiment of the present invention will be described with reference to the drawings. Figures 1 to 6 explain the method for constructing and repairing a wall structure according to an embodiment of the present invention, with Figures 1 and 2 being a flow chart showing the procedure of the method for constructing and repairing a wall structure, Figure 3 being a schematic diagram showing an example of a joint structure and a sealing member, Figures 4 and 5 being explanatory diagrams of the construction and repair process of a wall structure, and Figure 6 being a perspective view of a revetment wall.

[0030] <Construction and repair methods for wall structures> The method for constructing and repairing a wall structure according to an embodiment of the present invention is a technique that is suitable for use in, for example, a revetment wall. The following description will be given taking a revetment wall as an example, but the present invention can be applied not only to revetment walls, but also to other wall structures such as retaining walls, so long as the wall structure uses concrete blocks with joints.

[0031] This method for constructing and repairing a wall structure can be broadly divided into a process of constructing a wall structure by arranging and joining concrete blocks 10 together, and a process of repairing the wall structure by replacing damaged concrete blocks 10. In other words, the present invention is a technology in which a wall structure is constructed by joining together a plurality of concrete blocks 10 with joints, and in the unlikely event that damage occurs to a part of the wall structure, the wall structure can be quickly repaired by removing only the damaged concrete block 10 and replacing it with a new (sound) concrete block 10, rather than constructing the entire wall structure anew.

[0032] <Concrete blocks used to build wall structures> The concrete blocks 10 used in constructing a wall structure according to an embodiment of the present invention are concrete blocks 10 that are joined together using cotters 22 as joints. The concrete blocks 10 have joints 20 embedded within the concrete blocks 10, and when adjacent concrete blocks 10 are joined together using the cotters 22, the joints 20 can be sealed (watertight) with a sealing member. Although the present embodiment uses the cotters 22 as joints, other joint structures may be used as long as they can be easily attached and detached.

[0033] As shown in Fig. 6, a revetment wall is a structure constructed to protect a riverbank from erosion and scouring caused by running water, and is composed of a slope covering work 100 and a foundation work 110. In addition, foot protection work 120, horizontal band work 130, crest work 140, crest protection work 150, edge stop work 160, rubbing work (not shown), backfill work 170, etc. are also provided as necessary. In the revetment wall according to the embodiment of the present invention, the slope covering work 100 is constructed using concrete blocks 10.

[0034] A typical slope covering work 100 is constructed by laying concrete blocks 10 side by side on foundation concrete, constructing backfill material between the concrete blocks 10 and the natural slope (backfill work 170), and covering the top end with top end concrete (top end work 140 / top end protection work 150). If necessary, drainage holes may be provided in appropriate locations. There are various methods for arranging the concrete blocks 10, such as flat laying, valley piling, and cloth piling, but any arrangement may be used as long as adjacent concrete blocks 10 can be joined together with joints.

[0035] The concrete blocks 10 are provided with joints 20 using cotters 22 at the portions facing the adjacent concrete blocks 10. The portions where the joints 20 are provided are appropriately determined according to the type of revetment wall to be constructed, but all of the left side, right side, top side, and bottom side of the concrete blocks 10 are in In addition, the joint portion 20 provided on each side may be one location on each side, or two or more locations on each side.

[0036] 3(a), the joint portion 20 constituting the joint structure of the concrete block 10 used in this embodiment is composed of a pair of cotter holders 24 with a lip groove-shaped cross section embedded in the joint surfaces of the concrete block 10, and a cotter 22 that is inserted into the pair of cotter holders 24 to connect the cotter holders 24. In this embodiment, the cross section of the cotter 22 is approximately H-shaped.

[0037] Although not shown, each cotter receiving bracket 24 is embedded so that the outer surfaces of a pair of fastening lips are positioned on the joint surfaces of adjacent concrete blocks 10. A tapered surface is formed on the inner surface of each fastening lip, which is inclined from the front end to the rear end in the cotter insertion direction in a direction away from the outer surface of the lip.

[0038] Each cotter receiving fitting 24 has an internal gap, and a cotter insertion opening 21 is provided for inserting the cotter 22 into this gap. Although not shown, a plate-like piece is formed on the back side of the innermost edge of the cotter insertion opening 21, and an anchor is connected to the rear end. The inside of this cotter insertion opening 21 becomes a joint recess for attaching a sealing member (filler 23 or blockage lid 30).

[0039] The cotter 22 is formed with a generally H-shaped cross section so that it can be inserted into the cotter receiver 24 from the cotter insertion opening 21 with the pair of cotter receiver fittings 24 butted against each other at the outer surfaces of the fastening lips. Tapered surfaces are formed on the inner surfaces of the left and right fastening flanges of the web, and are inclined so that the width from the center of the web changes in accordance with the change in the distance between each tapered surface of the fastening lip of the cotter receiver fitting 24 and the outer surface.

[0040] A blocking lid 30 can be detachably attached to the upper surface of the cotter receiving fitting 24. As shown in Fig. 3(b), the blocking lid 30 is made of a synthetic resin plate of a size capable of closing the cotter insertion opening 21 which becomes a series of approximately H-shaped pieces when a pair of cotter receiving fittings 24 are joined together with the end surfaces of the fastening lips butted against each other. In addition, a pair of elastic locking pieces 31 each having a hook piece 32 for fitting into the cotter insertion opening 21 are provided protruding from the back surface of the blocking lid 30.

[0041] When adjacent concrete blocks 10 are joined and assembled, a pair of cotter receivers 24 with the outer surfaces of their fastening lips butted against each other are positioned on the joint end faces. Then, by inserting a cotter 22 into the integrated, generally H-shaped cotter insertion opening 21 and tightening the fastening lips of adjacent cotter receivers 24 against each other with the fastening flanges, adjacent segments can be joined together.

[0042] In this state, the pair of elastic locking pieces 31 provided on the blocking lid 30 are inserted into the cotter insertion opening 21 of the cotter receiver 24, and the hook pieces 32 provided at the tips of the elastic locking pieces 31 are engaged with the cotter insertion opening 21. This brings the blocking lid 30 into close contact with the surface of the cotter receiver 24, sealing the cotter insertion opening 21 (the joint structure becomes watertight).

[0043] <Wall structure construction process> First, construction of a wall structure will be described with reference to Fig. 1 and Fig. 4. To construct a wall structure, a process (S1) of arranging concrete blocks 10 with joints next to each other, a process (S2) of joining (connecting) adjacent concrete blocks 10 with detachable joints (cotters 22), and a process (S3) of sealing the joints 20 by detachably attaching sealing members (filler 23 and blocking cap 30) to the joints 20 of the concrete blocks 10 are repeatedly performed until the wall structure is completed (S4). For example, when constructing a revetment wall, incidental works such as cofferdam work, foot consolidation work 120, embankment work, backfill work 170, top work 140, top protection work 150, edge stop work 160, and rubbing work are performed at an appropriate time as necessary. In the construction of other wall structures, necessary works for the wall structure are also performed depending on the situation.

[0044] <The process of arranging concrete blocks> When preparations for arranging the concrete blocks 10 are complete, the concrete blocks 10 are arranged and placed according to a previously designed arrangement. Normally, the concrete blocks 10 are arranged and placed in order from the bottom to the top of the wall structure, but the concrete blocks 10 can be arranged in any suitable manner depending on the environment and design in which the wall structure is to be constructed.

[0045] <The process of joining concrete blocks> After lining up a pair of concrete blocks 10 side by side or up and down, the joints 20 of adjacent concrete blocks 10 are matched and the adjacent concrete blocks 10 are firmly connected to each other using joints. As a joint structure, it is preferable to use a cotter 22 that allows adjacent concrete blocks 10 to be easily connected and disconnected from each other, but other joint structures may also be used.

[0046] To increase the strength of the connection, it is preferable that the concrete blocks 10 be joined in all horizontal and vertical directions, but the concrete blocks 10 to be joined can be selected appropriately depending on the environment and design in which the wall structure is constructed. Also, the number of locations where joints are used on the opposing surfaces of adjacent concrete blocks 10 may be one location, or two or more locations. Also, depending on the environment and design in which the wall structure is constructed, there may be locations where no joints are used.

[0047] <Process for sealing the joint> The joint 20 is recessed because it is embedded in the concrete block 10. If this recess is left as it is, dirt and water will get into the recess, causing the joint to rust and become damaged. Therefore, in joints using conventional cotters 22, measures have been taken such as filling the recess of the joint 20 with a filler 23 such as mortar, and further attaching a cover member (blocking cover 30) to the recess.

[0048] If the joints 20 are filled with a filler 23 such as mortar as in the conventional method, the joints 20 can be covered to prevent rusting or damage, but not only are adjacent concrete blocks 10 joined together by joints, but the joints are completely embedded in the concrete blocks 10. For this reason, when trying to replace a damaged concrete block 10, the joints 20 joining the adjacent concrete blocks 10 must be destroyed, and the joints 20 of the sound concrete blocks 10 will also be destroyed.

[0049] Therefore, even if only some of the concrete blocks 10 that make up the wall structure are damaged, it is necessary to replace the concrete blocks 10 over a wide area, which requires extensive construction work that cannot be completed in a short period of time and results in high construction costs. For example, if a revetment wall (levee) is breached due to heavy rain or the like, the breached area must be repaired immediately, but because conventional revetment walls do not connect adjacent concrete blocks 10, there is a risk that the breached area will be widespread. Even if adjacent concrete blocks 10 were connected, conventional connection methods make it impossible to complete the construction work in a short period of time.

[0050] In this embodiment, in the step of sealing the joint portion 20, a sealing member (filler 23 or blocking lid 30) is detachably attached to the joint portion 20 of the concrete block 10, thereby sealing the joint portion 20. The sealing member may be the blocking lid 30 that covers the recess to make the inside of the recess sealed, or may be a flexible filler 23 such as rubber, plastic, or gel material that can be filled into the recess and easily removed to seal the recess, or a combination of these may be used.

[0051] <Wall structure repair process> Next, a process for repairing a wall structure when a part of the wall structure is damaged will be described with reference to Figures 2 and 5. When a part of the wall structure is damaged and it becomes necessary to repair the wall structure, the wall structure is repaired by carrying out a process (S5) of removing the sealing member (filler 23 or blockage cover 30) and the joint (cotter 22) attached to the joint 20 between the damaged concrete block 10 and the adjacent concrete block 10, a process (S6) of removing the damaged concrete block 10, a process (S7) of installing a new concrete block 10 in place of the removed concrete block 10, a process (S8) of connecting the newly installed concrete block 10 and the adjacent concrete block 10 with a detachable joint (cotter 22), and a process (S9) of sealing the joint 20 by detachably attaching the sealing member (filler 23 or blockage cover 30) to the joint 20 of the newly installed concrete block 10 and the adjacent concrete block 10. The above-mentioned wall structure repair process (S5 to S9) is performed until the damaged portion of the wall structure is eliminated (S10).

[0052] <Process for removing sealing members and fittings> In the process of removing the sealing member, in order to remove the damaged concrete block 10 from among the concrete blocks 10 that have been used to construct a wall structure, the sealing member (filler 23 and blocking lid 30) applied to the joint 20 connecting adjacent concrete blocks 10 is removed, and the joint (cotter 22) is removed. As described above, the sealing member (filler 23 and blocking lid 30) of this embodiment is detachable from the joint 20, so that even if it is removed from the joint 20, the joint 20 will not be damaged. Furthermore, when the cotter 22 is used as the joint, the joint (cotter 22) can be easily removed.

[0053] <Process of removing damaged concrete blocks> In the process of removing the damaged concrete block 10, the sealing members (filler 23 and blockage cover 30) are removed, and the concrete block 10 from which the joints (cotters 22) have been removed is removed from the wall structure using heavy machinery such as a hydraulic excavator or a crane. In some cases, excavation work, rigging work, etc. may be required as a preparatory process for the removal work.

[0054] <Process of installing new concrete blocks> After removing the damaged concrete block 10, a new concrete block 10 is installed. At this time, the area where the damaged concrete block 10 was located may require work such as leveling the ground, filling with backfill material, securing space for installing the new concrete block 10, and adjusting the position of the remaining concrete block 10.

[0055] A new concrete block 10 is installed in the space thus secured. The concrete block 10 to be installed is placed in the space of the remaining concrete block 10 using heavy machinery such as a hydraulic excavator or a crane. If it is not possible to secure the exact same space (area, shape) as before when the damaged concrete block 10 is removed, fine adjustment work may be required, such as preparing a new concrete block 10 that fits into the space left by the removal of the damaged concrete block 10.

[0056] <Process for sealing the joint> After placing the new concrete blocks 10, adjacent concrete blocks 10 are connected with joints (cotters 22) in the same manner as in constructing a wall structure, and the joints 20 are then sealed with sealing members (filler 23 and blocking lid 30). The connection of the concrete blocks 10 using the joints (cotters 22) and the sealing with sealing members (filler 23 and blocking lid 30) are as described above.

[0057] If there are multiple damaged concrete blocks 10, the above-mentioned wall structure repair process is carried out at all of the locations. Also, incidental work similar to the construction process of the concrete blocks 10 may be carried out. For example, if the wall structure is a revetment wall, cofferdam work, foot consolidation work 120, embankment work, backfill work 170, crest work 140, crest protection work 150, edge stop work 160, rubbing work, etc. are carried out at the repair locations as necessary and at an appropriate time. In the construction of other wall structures, work necessary for the wall structure is also carried out depending on the situation.

[0058] <When this invention is applied to revetment walls> The area, shape, size, height, and other conditions for revetments are set based on expected rainfall, etc. However, with recent climate change, there has been unexpected rainfall, and even if sufficient safety management is implemented, the water volume of the river can increase beyond the expected range, generating water pressure and currents that can damage revetments.

[0059] Conventional revetment walls are constructed by piling up concrete blocks 10 to form a slope, and generally do not include a process of joining adjacent concrete blocks 10 together. Once If the water volume of the river increases beyond the expected range, excessive load will be placed on the concrete blocks 10, causing the stacked concrete blocks 10 to shift or water to seep in through the gaps between the concrete blocks 10, which may result in damage to the concrete blocks 10 or scouring, which may lead to the collapse of the levee.

[0060] In this regard, in the method for constructing and repairing a wall structure according to the present invention, the stacked concrete blocks 10 are connected together with joints (cotters 22), so that even in the unlikely event that a water current or water pressure that exceeds expectations occurs, damage or scouring of the concrete blocks 10 can be kept to a minimum.

[0061] In addition, the joint portion 20 is watertightly sealed by the sealing member (filler 23 and blocking lid 30), which increases the strength of the joint structure. This sealing member (filler 23 and blocking lid 30) is detachable from the joint portion 20 of the concrete block 10. Therefore, even if a part of the concrete block 10 is damaged, the sealing member (filler 23 and blocking lid 30) can be easily removed to remove the joint (cotter 22). This makes it possible to remove only the damaged concrete block 10 and replace it with a new concrete block 10. In particular, when the cotter 22 is used as the joint, the concrete block 10 can be easily connected and removed.

[0062] In this way, when the method for constructing and repairing a wall structure according to the present invention is applied to a revetment wall, the revetment wall can be easily constructed and repaired, and the construction time and repair time can be shortened, and the construction and repair costs can be reduced. In addition, since the repair time can be shortened, the revetment wall (levee) can be repaired in a short time after it is breached by a flood, making this a construction method that is extremely advantageous in terms of river management. [Explanation of symbols]

[0063] 10. Concrete Block 20 Joint 21 Cotter insertion opening 22 Cotter 23 Filling material 24 Cotter support bracket 30 Occlusion lid 31 Elastic locking piece 32 Hook piece 100 Slope Covering Works 110 Foundation work 120 Foot protection work 130 Horizontal Belt Works 140 Top work 150 Top protection work 160 End Stop Work 170 Backfilling

Claims

1. placing the concrete blocks with the joints next to each other; a step of connecting adjacent concrete blocks with detachable joints; A process of sealing the joint portion, which is a recessed portion provided opposite to adjacent concrete blocks, by using a filler and an opening / closing cover that function as a sealing member; By repeating the above steps, the wall structure is constructed. When part of the concrete block that constitutes the wall structure is damaged, a step of removing an opening / closing cover that seals a joint portion consisting of a recess provided opposite the damaged concrete block and an adjacent concrete block, and removing a filler material from within the recess; removing the damaged concrete block; installing new concrete blocks in place of the removed concrete blocks; a step of connecting the newly installed concrete block to the adjacent concrete blocks with detachable joints; A process of sealing the joint portion consisting of a recess provided opposite the newly installed concrete block and the adjacent concrete block using a filler and an opening / closing cover that function as a sealing member; The wall structure was repaired by carrying out the following: In the step of sealing the joint when constructing and repairing the wall structure, the recess is filled with a flexible filler material made of at least one of rubber, plastic, and gel material, which can be filled and easily removed to seal the recess, and a closing lid is attached to the recess, which is detachable and covers the recess to seal the recess. A method for constructing and repairing wall structures using jointed concrete blocks.

2. the joint is a cotter; Cotter brackets are embedded in the ends of the concrete blocks, The sealing member is removably attached to a joint recess in which a cotter receiving fitting is embedded.

2. A method for constructing and repairing a wall structure using the jointed concrete blocks according to claim 1.

3. The wall structure is a revetment wall.

3. A method for constructing and repairing a wall structure using the jointed concrete block according to claim 1 or 2.

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