JP2004169512A - Block connecting body and its construction method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a flexible block connecting body having curvature property by having sufficient connecting strength, and contriving improvement of workability/construction quality, and to provide its construction method. <P>SOLUTION: The block connecting body 10 connects a plurality of civil engineering concrete blocks 20 with a PC steel material 30 in series. The PC steel material 30 is tightened to integrally convey the block connecting body 10, and after laying, is bendable so that the PC steel material 30 is loosed and the integrally connected block connecting body 10 is matched with a installed position shape. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a block connection body of a concrete block for civil engineering used as a revetment block, a revetment block, a weight block of a dike construction, and the like, and a method of constructing the same.
[0002]
[Prior art]
In the revetment structure, a revetment structure having a flexible and flexible structure may be required. For example, at the border between the revetment and the unconstructed section, a rubbed revetment is installed to protect the small edge of the revetment.
[0003]
In general, in order to improve the familiarity with the normality and roughness of the unconstructed section, stones are used as a flexible revetment for articulated block revetments where concrete blocks are connected with iron wires and iron wire cages. A packed gabion seawall is employed (for example, see Non-Patent Document 1).
[0004]
In addition, in the case of lining to protect embankments and riverbank slopes, articulated block seawalls, etc. are suitable in cases where the resistance from running water or lift may be greater than the frictional resistance due to the block's own weight. . In an articulated block in which a concrete block is connected by an iron wire, a zinc-aluminum-plated iron wire is used as a corrosion-resistant iron wire from the viewpoint of ensuring durability against corrosion of the iron wire. As the iron wire diameter, φ6 mm is generally used for small blocks, and φ8 mm, which is the maximum diameter for large blocks, is generally used. With respect to the diameter of the connecting iron wire, the required diameter of the connecting wire is determined on the assumption that the vertical portion of the articulation block hangs vertically due to riverbed scouring. For large blocks, calculations were made assuming that the spacing between the connecting wires was 50 cm. If the spacing exceeded about 65 cm, a zinc aluminum plated iron wire of φ8 mm or more was required. Since the maximum diameter of the zinc-aluminum-plated iron wire is φ8 mm, there is a limit on the interval between the connecting wires in the articulated block, and there is a problem that it is restricted to improve the workability using a larger block than before. (For example, see Non-Patent Document 2).
[0005]
In recent years, in flood control, which is a river bank treatment technology, a timber sacred cow has been constructed as a traditional flood control method that places importance on the environment, and has attracted attention. The wood sacred cow is a dike constructed from the Fuji River since ancient times, and an example is shown in a perspective view in FIG. The two intersecting palms and the beam attached to the base are assembled in a triangular shape, and the lower-palm lumber consisting of the front palmer 102, the middle palmer 103, and the rear palmer 104 is sequentially erected, The front standing material 101 is erected on the front surface of the front joint material 102, and the ridge 105 is laid over the top intersection of each joint material to form a cow-like framework. A large number of laying materials 114 are laid on the front beam member 111, the middle beam member 112, and the rear beam member 113, and a weight 122 such as a gabion 122 is placed thereon. It is installed with a weight such as 123 mounted thereon. In addition, a sanding material (crossbar) 110 is attached to the front surface of the front joint material 102, and a stack of gabions as a sanding basket 121 is installed on the upstream side thereof. In the illustrated example, the binding of the frame members is performed by winding the No. 8 iron wire eight times. There are three sand throwing baskets, five heavy weight baskets and three rear weight baskets, and three butt holding baskets. These are all gabions. The stones to be packed in the gabion are made from cobbles collected locally.
[0006]
Holy cattle in the wood (hereinafter referred to as holy cattle) is a traditional flood control method that has been used since ancient times as a dike for rapid rivers, which conforms to the natural scenery. It is effective in preventing damage and in preserving and growing fish and other ecosystems.
[0007]
In this sacred cow, a gabion is frequently used as a weight as described above in order to secure hydraulic stability. However, in recent years, it has become difficult to obtain gemstones for filling in gabions, and it requires a great deal of manual labor to fill the gabions into the gabion, which is inefficient and the gabion has many gaps between the boulders. There is a problem that garbage easily accumulates in the inside, reducing the stability of the sacred cow, and a problem of requiring labor for removing garbage. Therefore, it is conceivable to construct a weight using articulated concrete blocks instead of gabions, but insert and install articulated concrete blocks in the narrow frame of the sacred cow with articulated articulated blocks. This is not easy, and there is a problem that construction is difficult.
[0008]
[Non-patent document 1]
National Land Development Technology Center “Mechanical Design Method for Seawalls” 1999 (pages 22-27)
[Non-patent document 2]
Japan Disaster Prevention Association, “Technical Guidelines for River Disaster Restoration Seawall Construction Method”, 2000 (pages 13-38)
[0009]
[Problems to be solved by the invention]
The present invention has been developed for the purpose of solving the above-mentioned problems of the prior art. As a specific problem, the present invention has a sufficient integral connection strength at the stage of transport and installation, and improves workability. It is another object of the present invention to provide a block connecting body which is flexible, has flexibility and conforms to the shape of the installation position, and a method for constructing the block connecting body.
[0010]
[Means for Solving the Problems]
The present invention has been made to solve the above problems, and its technical means is composed of a connected body in which a plurality of civil engineering concrete blocks are connected in series with PC steel, and the PC steel is tensioned to integrate the connected body. It is a block connection body characterized in that it can be transported, and after laying, the PC steel material is loosened so that the integrally connected block can be bent to match the installation position shape.
[0011]
In the present invention, concrete blocks for civil engineering are connected in series in a daisy chain using PC steel materials, and the PC steel materials are tensioned to form a large number of concrete blocks as an integral rigid body. For example, even under conditions that are difficult to transport, such as when it is difficult to transport, the blocks can be moved relative to each other when the PC steel is loosened. It is a block connected body that can be laid in a flexible manner. As the PC steel material, a desired number of PC steel strands or the like having a thickness suitable for such a use mode can be used, and this block connecting body can be applied to a wide range of applications.
[0012]
In the method for constructing a block joint according to the present invention, a PC steel material is inserted into through-holes of a plurality of concrete blocks, and the PC steel material is tensioned to form an integrated block joint in series. It is a method of constructing a block connecting body characterized by holding and installing it in a predetermined position, then releasing the tension of the PC steel material, constructing a loosely connected block connecting body that matches the shape of the construction place is there.
[0013]
In this case, the fixing of the PC steel material may be performed by hand tightening. Normally, the tension fixing of the PC steel strand is performed using a hydraulic center hole jack or the like, and the fixing is performed using a fixing device of a wedge prevention type. It may be difficult to use a large hydraulic jack depending on the conditions of site construction. In such a case, a manual screw jack is used, or a gripper with an external thread is crimped on a PC steel stranded wire and fixed to the support plate with a fixing nut. It is good to do it.
[0014]
Further, when the predetermined position is applied to a sacred cow in wood, which is a water control structure, it can be easily transported and installed at a predetermined position in a state of an integral rigid body, and then bent into a shape matching the shape of the sacred cow. Can be an effective weight.
[0015]
If the PC steel material is made of unbonded PC steel wire, it will be a preferable construction in terms of handling and corrosion prevention. Unbonded PC steel strands are made of low-relaxation PC steel strands with anti-corrosion coating. For example, high-density polyethylene is injected into the outer circumference of PC steel strands by injecting high-quality grease with excellent rust prevention and lubricity. Made by melt-extrusion of a sheath made of stainless steel. Therefore, the filling rate in the polyethylene sheath is very high, and the PC steel strand is completely protected from corrosion. For fixing the unbonded PC steel strand, a wedge-type fixing device or a pressure grip is usually used.
[0016]
The concrete block for civil engineering used in the block connecting body of the present invention is not limited in size and shape. Further, the connecting end surfaces of the concrete blocks may form contact surfaces having an area that provides an appropriate surface pressure, and may be curved surfaces in consideration of bending. In addition, an intermediary for facilitating bending may be interposed between the concrete blocks as necessary. It is preferable that the concrete block is provided with an insert or a metal fitting for attaching a necessary hanging tool according to the application.
[0017]
In the above description, the example in which the concrete blocks are connected in series in a row has been described. However, this connected body is arranged in a plurality of rows horizontally or vertically, and the parallel connected bodies are connected with a horizontal connecting material or a PC steel material. It may be good.
[0018]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0019]
FIG. 4 is a perspective view showing one connecting block 20 used in the embodiment of the present invention, and FIG. 5 is a three-view drawing thereof. The block 20 has a substantially rectangular parallelepiped shape, and has a PC steel material insertion hole 21 penetrating from one side surface to the other side surface. The PC steel material insertion hole 21 is a hole for accommodating a PC steel material as a connecting member, and an appropriate hole diameter is set in consideration of the diameter of the PC steel material to be used.
[0020]
In the embodiment shown in FIG. 4 and FIG. 5, the flat portion 22 is provided at about 1/3 of the center of the side surface of the block, and the remaining upper and lower 1/3 portions have a curved surface 23. A plurality of blocks 20 are connected in series by inserting a PC steel material, and integrated by introducing a prestress. In this case, the contact area between the blocks 20 must not exceed the allowable compressive stress of the concrete. The plane portion 22 corresponds to this. In general, the PC steel material is arranged at the center of the block height when a large bending moment does not act. It should be noted that the block 20 is provided with an insert for attaching a hanger and a hanger as necessary.
[0021]
FIG. 1 is a side view of a block connecting body 10 according to an embodiment of the present invention in which a plurality of blocks (seven in this example) are connected, and FIG. 2 is a plan view thereof. The block connecting bodies 10 are connected in series by PC steel materials 30 through PC steel material insertion holes 21 (FIG. 4). The blocks 20 at both ends of the PC steel material 30 are provided with concave holes 25 so that the fixing portion of the PC steel material 30 is buried in concrete as shown in FIG. In the concave hole 25, there is provided a fixing portion including a support plate 31, a wedge 33 for fixing the wire 30 made of PC steel, a sleeve 32 for accommodating the wedge 33, and the like.
[0022]
As shown in FIG. 10, for example, as shown in FIG. 10, the block connector 10 has a flexibility that follows the unevenness of the installation location in the final installation state. FIG. 10 shows a shape of the sacred cow 100 when used as an intermediate weight. A curved surface 23 for smoothing the bending of the contact surface is arranged on the side surface of the block 20. The surface of the block 20 may be provided with a landscape pattern 24 as illustrated in FIGS. 4 and 5 as necessary.
[0023]
Next, the construction of the block connecting body of the present invention will be described with reference to FIGS. 1 and 6 to 8, in which an example is used as an intermediate weight of the sacred cow 100 illustrated in FIG. 10.
[0024]
Construction of the block connector 10 is performed in the following procedure.
[0025]
First, as shown in FIG. 1, near the block construction site, a required number of blocks 20 to be integrated into a leveled place are laid out by a heavy machine such as a crane so that the side surfaces contact each other. In this case, the work can be facilitated by providing in advance a concave and convex fitting portion for positioning the PC steel material insertion hole of the block 20 on the side surface of the block. As the blocks at both ends, a block provided with a truncated quadrangular pyramid concave hole 25 shown in FIG. 3 is used. A fixed fixing device or a tension fixing device made of a PC steel is arranged in the concave hole 25. After the installation is completed, the concave hole 25 is filled with mortar or the like.
[0026]
As the PC steel material 30, a PC steel rod or a PC steel stranded wire is used, and a PC steel stranded wire in which a small-diameter strand is east is excellent in flexibility and more suitable. In addition, a PC steel material that has been subjected to unbonding from the viewpoint of corrosion protection is suitable. As an example of unbonded PC steel, high-quality grease excellent in anticorrosion is injected into the outer periphery of PC steel at high pressure, and a sheath made of high-density polyethylene is coated. I have.
[0027]
The PC steel material 30 to be inserted into the PC steel material insertion hole is cut to a required length according to the length of the block to be connected, and inserted into the PC steel material insertion hole. Attach the fixed side fixing device to the fixed end of the PC steel. Examples of the fixed-side fixing device include a screw-type fixing device, a wedge-type fixing device, and a pressure-type fixing device. Insert the tip end of the tension side end of the PC steel into the PC steel insertion hole of the block, feed the PC steel sequentially into the PC steel insertion hole of the block to be connected, and set the fixed side fixing tool to be in contact with the block end surface. I do. In this state, the tension-side end of the PC steel 30 protrudes from the PC steel insertion hole at the end of the block.
[0028]
Next, fixation on the tension side is performed. When the number of blocks to be connected is small and the amount of flexural deformation of the block connected body is small, or when the PC steel can be conveyed without bending, a hydraulic jack is used. Instead of introducing the prestress, fixing such as screwing or wedge fixing by manual work may be performed. The PC steel material is a connecting material capable of adjusting the amount of bending deformation during lifting, and is capable of various fixings such as tension fixing and loose fixing, and is most suitable as a connecting material for adjusting the lifting deformation of the block connecting body.
[0029]
When there are a large number of blocks to be connected, or when there is an obstacle such as a height limit at the installation place such as a sacred cow structure, and installation by horizontal and horizontal movement is necessary, prestress is introduced into the block connection body 10. To increase the rigidity. To introduce the prestress, a hydraulic jack is set on the tension end side of the PC steel, the PC steel is gripped by the hydraulic jack, the PC steel is pulled by a predetermined amount by the action of hydraulic pressure, and the PC steel is fixed at the block end. .
[0030]
As a guide of the prestress to be introduced into the concrete, the bending tensile stress generated at the upper and lower ends of the contact surface of each connecting block due to the bending moment generated by the block's own weight when the block connecting body 10 is horizontally lifted at a plurality of hanging positions. However, a traction force for applying a compressive stress (prestress) exceeding its absolute value is appropriate. That is, it is desirable that no tensile stress be generated on the contact surface after the introduction of the prestress.
[0031]
Next, a construction method in the case where the block connected body 10 of the present invention shown in FIG. 1 is used as a weight of the sacred cow 100 will be described. As shown in FIG. 10, several central blocks of the block connector 10 are placed on the base of the sacred cow at a position higher than the ground, and the remaining blocks at both ends are installed so as to hang down on both sides of the sacred cow. .
[0032]
As shown in FIG. 6, when the timber frame of the sacred cow 100 is already installed and the block connected body 10 is mounted on the sacred cow 100, the ridge at the center of the sacred cow becomes an obstacle. As shown in FIG. 6, the seven blocks 20 are connected to each other, and the second block from the left and right ends of the block connected body 10 to which the prestress has been introduced is lifted by the hanging tool 51 via the hanging frame. In the case of the sacred cow timber frame, since the center of the timber frame is an obstacle for the transport of the block linked body, the lifting position of the block linked body should be at least the end block when temporarily placed on the base of the sacred cow timber frame. It is necessary to select a position where the obstacle exceeds the obstacle in the center of the timber frame.
[0033]
When the block connecting body 10 is lifted by the two hanging members 51, a prestress sufficient to cancel the bending tensile stress at the upper and lower ends of the block contact surface due to the bending moment generated by the weight of the block is introduced into the concrete. . Then, the contact surfaces between the blocks do not separate from each other, and the bending deformation of the block connector 10 becomes a bending approximating the elastic bending of the integrated block. In this state, the block connected body 10 is moved laterally into the sacred cow 100. When one of the hanging tools 51 reaches a position close to the ridge 105 of the sacred cow 100, the block connecting body 10 is temporarily placed on the base of the sacred cow, and the hanging tool is replaced.
[0034]
FIG. 7 shows this state. One of the hanging members 51 is moved to the vicinity of the ridge 105 of the sacred cow, and the block connecting body is temporarily placed on the ground in order to change the hanging position there. Although the flexure of the temporarily placed block coupling body is approximately the same as that of the elastic flexure, it is preferable to place a pedestal as appropriate to prevent deformation. After the temporary placement, the hanging tool 51 is removed, and the hanging tools 52 and 53 are attached. The hanging tool 51 near the ridge 105 of the sacred cow 100 is replaced with a hanging tool 52 of a block located beyond the ridge 105. The remaining hanging members 53 are attached at two positions of the rightmost block in FIG. 7 and a second block next to the block. Further, when the interval between the hanging positions is large, a third or more hanging tool may be attached as needed.
[0035]
When the hanging members 52 and 53 are set, the block connecting body 10 is slowly lifted by these hanging members 52 and 53 and laterally moved. As shown in FIG. 8, the block connector 10 is moved to a predetermined position and installed. In this manner, the block connected body 10 connected by the PC steel material suppresses the amount of bending deformation at the time of lifting, and even if there is an obstacle in the installation place due to the change of the suspended position in the temporary placement of the block connected body. Efficient lateral movement is possible by suspension.
[0036]
After that, set the hydraulic jack on the tension side fixing part to release the prestress, apply more tension to the PC steel than at the time of prestress introduction, loosen the screw or wedge of the fixing part, and release the tension of the PC steel I do. When the tension of the PC steel material is loosened, the block connector 10 bends, and each block rotates according to the unevenness of the installation position, and moves slowly along the block contact surface. After the tension of the PC steel material is completely released and the deformation of the block connected body is completely stopped, the fixing tool of the tension-side fixing unit is brought into contact with the support plate on the end surface of the block, and fixing is performed by screwing or wedge prevention. After fixing, mortar or the like is filled into the fixing portion housing recess for fixing the fixing material and preventing corrosion.
[0037]
A PC steel material with only both ends fixed and fixed can be elastically bent and deformed because it is a wire. However, when an external force acts on a connected block and the block tries to move, the weight of the block is reduced. Is applied to the PC steel material. Since the amount of elastic deformation (elongation) of the PC steel is small, the movement of the block is suppressed. In addition, since the tensile strength of the PC steel material is much higher than that of an iron wire, a reinforcing bar, or the like, the movement resistance of the block connecting body can be increased. Furthermore, when a plurality of block connected bodies are arranged side by side and connected to each other in two vertical and horizontal directions, an aggregate of the block connected bodies that are planarly stable can be obtained.
[0038]
Next, FIG. 9 shows an example in which the weight of the butt of a sacred cow is constructed by the block connector 10 of the present invention. In this case, the number of blocks is small, for example, four. The PC steel material 30 is inserted, prestress is introduced, rigidity is made integral, lifted by the two hanging members 54, transported to the holding part of the holy cow, and then the tension of the PC steel material 30 is released, as shown in FIG. In this way, the weight is transformed into a bent shape that matches the shape of the sacred cow.
[0039]
The weight of the sacred cow using the block connecting body of the present invention can be constructed as described above by connecting the precast concrete block with the PC steel material, easily transporting the sacred cow to a desired position, and constructing the weight. it can. This block connecting body bends according to the shape of the construction place, and becomes an effective weight. Therefore, the construction can be performed in a shorter construction period with less labor than the conventional weight made of a gabion. It should be noted that the concrete block has less ingress and accumulation of refuse, and is advantageous in terms of maintenance management. Also, there is another effect that it is free to add a scenic pattern or the like in the landscape.
[0040]
In addition, in the above block connection body construction method, the case of using as the weight of the sacred cow was described in detail, but it can be similarly easily applied to revetment, riverbed work, slope lining, mountain retaining, etc. be able to.
[0041]
【Example】
[Example 1]
To check the resistance strength of the block connection, connect the seven blocks with unbonded PC steel strands without introducing prestress, hold one end of the connection material, lift the block connection, and apply it to the block or connection material. I checked for any abnormalities.
[0042]
The block is a block shown in FIG. 5 and is approximately 1/3 in the top and bottom sides of a curved surface and approximately 1/3 in the center is a flat surface. 05 tons. Also, three PC steel insertion holes are provided on the side surface of the block. Seven blocks were arranged in a line while adjusting the position of the PC steel material insertion hole. An unbonded PC steel wire of 15.2 mmφ with a length of about 10 m was inserted into the central PC steel material insertion hole, and wedge fixing was performed without introducing prestress.
[0043]
In this state, one end of the unbonded PC strand was gripped and slowly lifted by a crane. After the block connected body was allowed to stand still for about 5 minutes in a state of being completely lifted, it was slowly dropped on the ground. The wedge of the anchoring portion of the unbonded PC steel wire was loosened, and the unbonded PC steel wire was pulled out. Observation of each block contact surface and unbonded PC steel stranded wire revealed no significant damage to the block, and almost no flaws were found in the unbonded PC stranded wire.
[0044]
A tensile force of about 70 kN corresponding to the block's own weight was generated on the unbonded PC steel strand at the time of lifting, and it was confirmed that a block connected body having a large resistance strength was obtained. In addition, the tensile load of the unbonded PC steel stranded wire of 15.2 mmφ from seven wires is 261 kN or more, and has a sufficient safety factor.
[Example 2]
The amount of bending deformation due to lifting of the block connecting body was confirmed. Seven blocks described in Example 1 were arranged in a line, and two unbonded PC steel stranded wires of 15.2 mmφ were inserted into the PC steel material insertion holes. A hydraulic jack having a maximum tension of 22 tons was set in the fixing portion on the tension side, and a tension of 110 kN was introduced per one. Thereby, approximately 1.8 N / mm at the block contact surface ² Of prestress was introduced into concrete.
[0045]
Hanging wires were attached to the blocks at the third and fifth positions from the end of the pre-stressed block connected body, and the block connected body was slowly lifted by a crane. The block connecting body did not bend significantly, and exhibited a linear state. Incidentally, when the vertical displacement between the block surface at the hanging point position and the end of the block connector was measured, the displacement was about 2 cm. Moreover, since there was no joint opening of the block contact surface, it was confirmed that the amount of bending deformation was very small.
[0046]
Next, the block connecting body was slowly lowered to the ground, and the hydraulic jack was set again at the fixing portion on the tension side of the unbonded PC steel strand. A tension of 110 kN or more already introduced into the unbonded PC steel strand was applied by a hydraulic jack, the wedge of the fixing part was removed, and the tension of the unbonded PC strand was gradually released. Thereafter, when the tension of the unbonded PC stranded wire disappeared, wedge fixing was performed. In this state, similarly to the block connected body at the time of introducing the prestress, the block connected body was slowly lifted at the third and fifth two-point suspensions. The deformation of the block connection was obviously larger than that of the prestressed one, and joint opening was clearly observed at the block contact surface. The vertical displacement between the block and the end block at the hanging position was about 25 cm.
[Example 3]
The workability was confirmed when there were obstacles at the place where the block connector was installed. A base having a width of about 4 m, a length of about 2 m, and a height of 0.7 m was prepared, and a bar was vertically attached to the center of the base at a position where the height from the base was 1.5 m. This rod was regarded as an obstacle, and a construction was carried out in which the seven linked blocks described in Example 2 were installed on the base in a well-balanced manner.
[0047]
Using the seven blocks described in Example 2, two unbonded PC steel strands having a diameter of 15.2 mmφ were set in the PC steel material insertion holes, and the unbonded PC steel strands were slightly tightened by hand tightening. Fixing was carried out. Hanging wires were attached to the blocks at the second and sixth positions from the end of the block connected body connected by the PC steel strand, and the block connected body was slowly lifted by a crane.
[0048]
The block connecting body was slowly moved to the vicinity of the base so that a bending deformation of about 30 cm occurred. The end block from the base of the block connection body was passed under the bar on the base, moved to a position where the end block completely passed over the bar, and slowly suspended and temporarily placed.
[0049]
The hanging tool was removed, hanging wires were attached to the blocks at the first, fifth, and seventh positions from the end of the block connected body, and the block connected body was slowly lifted by a crane. After that, it was moved to a predetermined position by lateral movement and suspended. In the block connected body protruding from the base, the block immediately adjacent to the base was oblique, the outer block was almost flat, and the block was deformed along the unevenness of the installation position. Since it was considered that a tensile force was acting slightly on the unbonded PC steel strand, the fixing at the tension-side fixing portion was loosened, and re-fixing was performed at a position where the tensile strength of the unbonded PC steel strand disappeared.
[0050]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, by providing a PC steel material insertion hole in a concrete block for civil engineering, and connecting using a PC steel material as a connection material, it can be conveyed with rigidity integrally, after laying, excellent in flexibility and large in resistance strength. A block connection can be obtained. Further, since the strength range of the PC steel is wide, it is suitable for connecting large blocks.
[0051]
In addition, by introducing a prestress into the block connecting body or performing fixing without loosening by manually tightening the PC steel material, it is possible to reduce the bending deformation when the block connecting body is lifted, and to temporarily suspend the block. By this change, for example, when there is an obstacle that cannot be hanged down at a stretch, such as a sacred cow structure of a dike, installation becomes possible, and the workability is significantly improved.
[Brief description of the drawings]
FIG. 1 is a side view of a block connecting body of an embodiment.
FIG. 2 is a plan view of the block connected body of the embodiment.
FIG. 3 is a partial cross-sectional view of an end of the block connecting body of the embodiment.
FIG. 4 is a perspective view of one of the block connected bodies of the embodiment.
FIG. 5 is a three-view drawing of one of the block connectors of the embodiment.
FIG. 6 is an explanatory view of construction in which the block connected body of the embodiment is used for a sacred cow.
FIG. 7 is an explanatory diagram of construction using the block connected body of the embodiment for a sacred cow.
FIG. 8 is an explanatory view of construction using the block connected body of the embodiment for a sacred cow.
FIG. 9 is an explanatory view of construction in which the block connected body of the embodiment is used for a sacred cow.
FIG. 10 is an explanatory diagram of construction using the block connected body of the embodiment for a sacred cow.
FIG. 11 is an explanatory diagram of a sacred cow.
[Explanation of symbols]
10 Block connection
20 blocks
21 PC steel insertion hole
22 flat part
23 curved surface
24 Scenery
25 concave
30 PC steel
31 Support plate
32 Fixing body (wedge type)
33 Wedge
51, 52, 53, 54 hanging tools
100 Holy cow
101 Upright
102 Front joint material
103 Medium Gassho
104 Rear joint material
105 building materials
106 girder
110 Sanding material
111 Front beam
112 Middle beam
113 Rear beam
114 Laying material
121 Dust Basket
122 Weight Plummet
123 Bottom Basket

Claims (5)

Consisting of a series of concrete blocks for civil engineering connected in series with PC steel. The PC steel is tensioned so that the connected body can be integrally transported. After laying, the PC steel is loosened and the integrally connected block is placed at the installation position. A linked block, characterized in that it can be bent to conform to (1). A PC steel material is inserted into the through holes of the plurality of concrete blocks, and the PC steel material is tensioned to form a serially integrated block connection body, and the integrated block connection body is laterally held and installed at a predetermined position. A method of constructing a block connecting body, which releases tension of a steel material, constructs a loosely connected block connecting body that conforms to the shape of a construction place. 3. The method according to claim 2, wherein the tension of the PC steel is performed by hand tightening. The construction method according to claim 2 or 3, wherein the predetermined position is a sacred cow of a dike construction. The method according to any one of claims 2 to 4, wherein the PC steel material is an unbonded PC stranded wire.

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