JP5788840B2 - Continuous partition structure and construction method thereof - Google Patents

Description

  The present invention relates to a continuous partition structure in which a plurality of concrete blocks are continuously constructed in the longitudinal direction via a dry joint member, and a construction method thereof.

  As shown in FIG. 7, a conventional method for constructing a continuous partition structure is that a plurality of concrete blocks are installed approximately 10 mm apart from each other, such as adjacent concrete blocks A and B, and a gap formed between them. It was constructed by filling mortar or non-shrink mortar. Among them, in the case of concrete guard fences, bridge slabs and girders, etc., after hardening mortar and non-shrink mortar, etc., it is constructed by tensioning PC steel material in a sheath tube that extends across the concrete blocks. It was. A continuous partition structure was constructed by the above construction method.

  In a partition structure used as a road separation zone, it has been found that a large amount of energy from the collision vehicle is applied to the upper part of the partition structure at the time of a vehicle collision, and it is effective to increase the continuous rigidity of that part. The steel material is to be arranged on the upper part of the partition structure for the purpose of increasing the continuous rigidity.

  When the concrete blocks A, B,... Are installed, for example, as an example of the construction method, a back-up material C made of a sponge system is disposed as a lower joint form at the lower end of the gap, Concrete blocks A, B, ... A simple side joint mold D such as sticking gum tape is provided so as to straddle each other, and mortar, non-shrink mortar, etc. are injected and filled in the gap using funnel E for mortar injection, etc. It was.

  Therefore, in order to obtain a continuous partition structure, the molds C, D,... For injecting the mortar and the non-shrink mortar are provided, and waiting for the injection, filling and curing of the mortar and the non-shrink mortar. Therefore, it had to go through the construction process of tensioning PC steel.

  In the above process, mortar and non-shrink mortar must be filled so that the entire narrow gap is evenly distributed, and curing time is required until the mortar and non-shrink mortar are cured. Even if an early-curing material is used, a predetermined time is required until the material is cured. Under the condition that continuous construction of concrete blocks within a limited time is required, there is a drawback that only a short continuous partition structure can be constructed.

  On the other hand, when a concrete block once installed is moved to another place, or removed and re-installed for some reason, the mortar or non-shrink mortar used as joint material in the gap between the concrete blocks Etc. are attached to both end edge surfaces of the concrete block, and in order to reuse the concrete block, the mortar, non-shrink mortar, etc. attached with a strong adhesive force must be scraped off. Required a lot of time and money. Also, the work often caused damage to the concrete block.

  In addition, as shown in Patent Document 1 below, there is a technique for forming joints by filling joint materials that can be expanded and contracted between concrete blocks. However, as described above, construction takes time and the concrete blocks are re-used. There were the same difficulties as above to use.

Japanese Patent No. 3165127

  The continuous partition structure of the present invention and the construction method thereof have solved the above-mentioned drawbacks, and can be constructed without needing skill, not only at the time of new installation, but also at relocation and reuse, etc. The installation length of the concrete block in one day is 4-5 times longer than the conventional one.

  The present invention relates to a partition structure in which one or a plurality of concrete blocks with a sheath hole are extended and connected in a longitudinal direction via a dry joint material with a through hole, and the through hole of the dry joint material with a through hole is connected to the sheath. It is characterized by a continuous partition structure in which the PC steel material inserted in the sheath hole and the through hole is tension-fixed so as to coincide with the position of the sheath hole of the concrete block with holes.

  Also, a connecting part or groove part connecting means is provided on the side wall portion on one end side of the concrete block with a sheath hole, and the connecting means is fixed to another adjacent concrete block with a sheath hole via a dry joint material with a through hole. And a continuous partition structure formed by connecting one or a plurality of concrete blocks with sheath holes and a dry joint material with through holes.

Furthermore, the above-mentioned dry joint material with through-holes is a plate-shaped material made of any one of a steel plate, a plastic plate and a hard rubber plate , or a composite plate obtained by laminating or mixing them, and a resilient material is laminated on both sides of the hard plate. It features a continuous partition structure that is made of a material that does not easily adhere to a concrete block.

  Further, a dry joint material with a through hole is temporarily attached to one end edge side of a concrete block with a sheath hole installed at a predetermined construction location so that the sheath hole and the through hole coincide with each other, and then the through hole Install another concrete block with a sheath hole on the other edge of the dry joint material so that the through hole and the sheath hole coincide with each other. If necessary, install a concrete block with a similar sheath hole in the longitudinal direction. And repeat the appropriate number of temporary attachment of the dry joint material with through-hole, then insert the PC steel material through the sheath hole on the other end side of the concrete block with the sheath hole installed earlier, the sheath hole installed last The construction method of the continuous partition structure formed by tension-fixing the PC steel material at one end of the attached concrete block is characterized.

  Further, a connecting portion or a groove connecting means is provided on the side wall portion on the one end side of the concrete block with a sheath hole, and the tension of the PC steel material is temporarily attached to the one end edge side of the connecting means and the concrete block with the sheath hole. Attaching one or more concrete blocks with sheath holes and dry joint material with through-holes while fixing them with other adjacent concrete blocks with sheath holes through a dry joint material with through-holes. It is characterized by the construction method of the continuous partition structure formed.

  According to the present invention, in the continuous partition structure and the construction method thereof, the construction period can be significantly shortened by using the dry joint material in the joint portion between the concrete blocks.

  In addition, by using a dry joint material that does not easily adhere to the concrete block, materials such as conventional mortar and non-shrink mortar do not adhere to the edge of the concrete block. It can be reused.

(A) The perspective view which decomposed | disassembled each element of the continuous partition structure of this invention, (b) Sectional drawing of a concrete block, (c) Sectional drawing of the other Example of a concrete block. (A) Cross-sectional view of a bearing plate as a dry joint material, (b) Cross-sectional view of a bearing plate of another embodiment, (c) Cross-sectional view of a bearing plate of another embodiment, (d) A perspective view of the bearing plate. (E) The perspective view of the bearing plate of another Example, (f) The perspective view which shows the relationship between a concrete block and a bearing plate. Sectional drawing which shows the other Example of a concrete block. The upper side view which shows the relationship between the final installation concrete block of the continuous partition structure of this invention, and the next concrete block connected with it. (A) The perspective view of the other Example which decomposed | disassembled each element of the continuous partition structure of this invention, (b) Sectional drawing of the other Example of a concrete block. (A) The perspective view of the other Example which decomposed | disassembled each element of the continuous partition structure of this invention, (b) The perspective view of the other Example. (A) The schematic perspective view of the conventional continuous partition structure, (b) The perspective view which shows a joint part.

  Hereinafter, a continuous partition structure and its construction method will be described based on examples.

  Fig.1 (a) has shown the perspective view which decomposed | disassembled a part of continuous partition structure of this invention in the longitudinal direction. The continuous partition structure 1 includes concrete blocks 2, 2a,... That are continuously installed in the longitudinal direction, and dry joint members (hereinafter referred to as bearing plates) 3 that are installed between the concrete blocks 2, 2a,. .. Are formed in the concrete blocks 2, 2 a,..., And through holes 5 are formed in the bearing plate 3, and a plurality of concrete blocks 2, 2 a,. , And the PC holes 6, which are inserted and tensioned into the holes of the through holes 5,....

  Even if a large external energy is applied to the continuous partition structure 1 by a vehicle contact or collision, such as a concrete protective fence constructed as a partition structure between various traffic routes such as an expressway. The vehicle has sufficient strength to resist the impact and to prevent the vehicle from deviating from a predetermined traffic route.

  In order to counter the large external energy, the concrete block 2 alone is not sufficient, but the concrete blocks 2, 2 a,... Are connected by inserting PC steel materials in the longitudinal direction and tensioning them, It is necessary to construct a strong and continuous structure so that the plurality of concrete blocks 2, 2 a,.

  In order to meet the above requirements, as shown in FIGS. 1 (b) and 1 (c), the cross section of the concrete block 2 is formed with protruding stable portions 7, 7 'protruding in the left-right direction, and the upper portion Is formed as a thick standing portion 8 and sufficient stability and mass can be obtained.

  The material of the pressure bearing plate 3 is a steel plate, a plastic plate, a hard rubber plate, a plate-like material made of an appropriate material, a composite plate obtained by laminating or mixing them, or these plates are sequentially stacked on the construction site. Thus, it is made of a material that can be easily separated from the concrete blocks 2, 2a,... Without adhering to the concrete blocks 2, 2a,.

  2 (a) is a laminate in which a material having elasticity such as rubber or urethane is laminated on both surfaces of a hard plate such as a steel plate or a plastic plate, and the laminated material is used as a bearing plate 3,. It is an example. Moreover, what is shown in (b) is a material in which a soft material is interposed on both sides of a hard plate such as a steel plate or a plastic plate between the concrete blocks 2, 2a,. Each is an embodiment formed separately. A slight unevenness is formed at the edge of the concrete block 2, 2 a,... As an error in manufacturing, and the concrete block 2, 2 a can be formed by using an elastic material for the bearing plate 3. ,... And the pressure bearing plate 3 are improved, the frictional resistance is increased, and the displacement is less likely to occur. Further, since the bearing plate 3 has elasticity, the frictional resistance is further increased.

  Further, as shown in FIG. 2 (c), the adhesion between the concrete block 2, 2a,... And the bearing plate 3 such as rubber or urethane is good, and the concrete blocks 2, 2a,. It is also possible to form a bearing plate that facilitates reuse by applying an easy solution. Moreover, when not moving, you may apply the solution which does not peel.

  Each of the above materials is not limited to the above-mentioned materials, and can sufficiently withstand the deformation of the concrete blocks 2, 2 a,. A variety of materials can be selected as long as they can withstand a large amount of external energy, such as a vehicle contact or collision.

  As shown in FIG. 2 (d), the shape of the pressure bearing plates 3,... Of the present embodiment is the same as the cross-sectional shape of the concrete blocks 2, 2a,. As described above, the trapezoidal shape installed only in the upper part of the gap between the concrete blocks 2, 2 a, etc., and other various functions that can sufficiently achieve the function as a pressure bearing plate such as a polygonal shape, a circular shape, and an elliptical shape Any shape can be employed. Further, the attachment position and the number thereof are not limited as long as a predetermined function as a joint is achieved.

  In addition, when it is assumed that there is no plan to move or remove after re-installation, in the case of a partially installed bearing plate, for example, as shown in FIG. It is also possible to make a permanent structure by filling with mortar or the like.

  The thickness of the pressure bearing plate 3,... Is several mm to several cm, for example, about 1 cm, and through holes 5, 5 for allowing the PC steel materials 6, 6 ', 6 "to pass through at appropriate places. '5 "is formed. In FIG. 2 (d), one through hole 5, 5 ', 5 "is provided at one position in the upper part and one position at the position corresponding to the left and right protruding and stabilizing parts 7, 7' in the lower part. After installation of the concrete blocks 2, 2a, ... and the bearing plate 3, ... between the concrete blocks 2, 2a, ... and the bearing plate 3, due to vibration, contact, impact, etc. by a vehicle or the like. The PC steel members 6, 6 ', 6 "penetrating through the through holes 5, 5', 5" are brought into contact with each other and are not damaged.

  The sheath holes 4, 4 a,... And the through holes 5, are holes for inserting the PC steel materials 6, 6 ′, 6 ″, and for fixing with a mounting recess for fixing the PC steel material on the end side. Except for the concrete block 2, the concrete block 2 a,... Is formed through the longitudinal direction of the main body and through the bearing plate 3, and the concrete blocks 2, 2 a,. The pressure plate 3, ... is installed, and the PC steel material is inserted through the sheath holes 4, 4a, ... and the through holes 5, ... In Fig. 1 (a), Fig. 2 (d) and other examples. .., And through-holes 5,... Are shown, but as shown in FIG. 1 (c), it is possible to deal with only one location on the upper side. .

  The supporting plate 3 is attached to one end edge of the concrete block 2, 2a,... By simple bonding means or fixed by a bolt, a step formed on the end edge of the concrete block 2, 2a,. It is possible to achieve temporary attachment or attachment or displacement prevention by various means such as various locking means and a member embedded in the edge portion. In the embodiment shown in FIG. 2 (f), a concave portion is provided at the end edge of the concrete block 2, 2a,..., A convex portion is provided on the opposite surface of the bearing plate 3,. In addition, when the collision energy larger than the assumed energy is added and the connecting force of the PC steel alone impairs the connectivity between the blocks, it also plays a role of preventing the mutual displacement between the blocks. be able to. Although FIG. 2 (f) shows the fitting means by the concavo-convex part, various engaging means can be adopted in addition to the fitting means.

  After the appropriate number of the concrete blocks 2, 2 a,..., The bearing plates 3, are installed at predetermined positions on the construction site, the sheath holes 4, 4 a, and the bearing plates 3, of the concrete blocks 2, 2 a,. The PC steel materials 6, 6 ', 6 "are inserted into the through holes 5, 5', 5" from one end side, and are tension-fixed. The tension fixing of the PC steel 6 is performed using a center hole jack or the like in each fixing recess formed in the concrete block 2 on one end side and the concrete block 2x to be finally installed as shown in FIG. This is done using a special fixing hardware (such as a wedge hardware). Further, when the PC steel materials 6 'and 6 "are steel bars, bolts or the like are used in the side walls of the concrete block 2x shown in Fig. 1 (a) or the notches provided in the protruding stabilizing portions 7 and 7'. Can be fixed.

  When the concrete blocks 2, 2 a,... And the bearing plate 3, are continuously constructed, a predetermined number of each is extended in the longitudinal direction. As shown in FIG. 4, the PC steel material 6 inserted through the end portions of the PC steel material fixing concrete block 2x finally installed through one or a plurality of non-fixing general concrete blocks and bearing plates. Can be fixed by tensioning. Next, one or a plurality of concrete blocks and bearing plates to be continuous are the concrete block 2x that has been finally installed as the next concrete block for fixing the PC steel material, and the sheath tube and the through hole that are displaced in the thickness direction. By inserting and tensioning the PC steel material through one or a plurality of non-fixing concrete blocks using the above, it becomes possible to construct a partition structure continuously on the previously fixed concrete block group.

  The shape of the concrete blocks 2, 2a,... Of the continuous partition structure 1 is not the shape shown in FIG. 1, but is a concrete block 2 'shown in FIG. Various shapes can be employed as long as the shape provides stability and a predetermined strength, such as an asymmetric shape. Further, in relation to the ground G, various installation modes such as a mode of being installed on the ground G and a mode of being partly embedded in the ground G as shown in FIG. 3 are conceivable. .

  PC steel materials 6, 6 'and 6 "have a predetermined tensile strength such as PC steel stranded wire, coated PC steel stranded wire, steel rod, etc., as well as carbon-based materials and materials in which those fibers are bundled. It is possible to select and use various materials as long as the material can be obtained.

  The above-mentioned continuous partition structure 1 and its construction method can adopt new concrete blocks 2, 2 a,... And new bearing plates 3, as well as once installed concrete blocks 2, 2 a,. When the pressure plate 3 is moved to another place or removed for some reason and then re-installed, the pressure plate 3 is attached to the edge of the concrete block 2, 2a,. Therefore, it is possible to reuse the concrete blocks 2, 2a,... Without removing the deposits generated by the bearing plates 3,. It has become possible.

  The embodiment shown in FIGS. 5A and 5B shows a continuous partition structure that can be used in combination with the continuous partition structure of the first embodiment and the construction method thereof. In addition to the configuration of the first embodiment, FIG. When the impact force larger than the assumed energy is applied and the PC steel connection force alone causes the blocks to be displaced or the PC steel material to break, the concrete block is firmly maintained. 9, the bearing plate 11, the concrete block 9a, the bearing plate 11a,...

  .. Are formed on the left and right sides of the side walls of the concrete blocks 9, 9 a,... Between the connection portions 10 a of the concrete blocks 9 a adjacent to the connection portions 10 of the concrete block 9. The steel plate 12 is spanned across the support plate 11 and the concrete block is formed by tensioning the PC steel and securing the steel plate 12 to the adjacent concrete blocks 9, 9a,. 9 and 9a, and the bearing plates 11, 11a,... Can be connected more firmly.

  By the fixing means, the gap between the concrete blocks 9, 9 a,... Generated during construction and the bearing plates 11, 11 a,... Can be made as small as possible. It becomes possible to connect. The timing of the tension of the PC steel material and the fixing of the steel plate 12 may be either first or simultaneously.

  As shown in FIGS. 5 (a) and 5 (b), the connecting portions 10, 10a,... Are provided with notches in the concrete blocks 9, 9a, and the steel plate 12 is the surface of the concrete blocks 9, 9a,. Although it can be made not to protrude more, it is possible to firmly connect the concrete blocks to each other without providing a notch. 5 (a) and 5 (b), the position is provided on the side wall of the standing portion 14 close to the protruding stable portion 13 side, but the position is not limited to this, and a dotted line This is possible in various places as shown in. Further, when the shape of the bearing plate 11 matches the shape of the concrete block 9 and is a notch, the notch 15 on the bearing plate 11 is located at the same position as the notch of the concrete block 9. Will be provided.

  6 (a) and 6 (b) are other examples showing the continuous partition structure that can be used together with the continuous partition structure and the construction method thereof in the same manner as in the second embodiment. In addition, an impact force larger than the assumed energy is applied, and it works to firmly maintain the connectivity of the concrete block when the PC steel connection force alone may cause mutual displacement of the blocks or breakage of the PC steel material. The block 16 can be connected more firmly.

  FIG. 6 (a) shows groove portions 17, 17a,... Formed on the left and right sides of the side walls on the end side of the concrete blocks 16, 16a,..., And the respective edge portions from the side walls of the groove portions 17, 17a,. Bolt holes 18, 18a, ... are formed penetrating toward the side. To the bolt holes 18, 20, 18 a,... Via a bearing plate 19 in which similar bolt holes 20 are provided at the same positions as the bolt holes 18 of the groove 17 of the concrete block 16 between the adjacent concrete blocks 16, 16 a. The bolts 21, 21a, ... are inserted, and the concrete block 16, 16a, ... and the bearing plate 19, ... can be more firmly connected by tensioning the PC steel material and fixing both ends with nuts. Either the tension of the PC steel material or the timing of the nut tightening and fixing may be either first or simultaneously.

  Moreover, as shown in FIG.6 (b), it replaces with the groove parts 17,17a, ..., and the box-type steel materials 22,22a, ... may be embedded, and it may mutually connect using the flange.

  The positions of the grooves 17, 17a, ... and the box-shaped steel materials 22, 22a, ... are provided on the left and right side walls of the standing part 23 in FIGS. 6 (a) and 6 (b). It is not limited. In addition, when the shape of the bearing plate 19 is different from the shape of the concrete block 16 and there is no bearing plate at the position of the grooves 17, 17a,..., No bolt hole is provided in the bearing plate.

  It goes without saying that the continuous partition structure and the construction method thereof according to the present invention are not limited to the above-described embodiments, but also include combinations of those embodiments and configurations derived therefrom.

DESCRIPTION OF SYMBOLS 1 Continuous partition structure 2, 9, 16 Concrete block 3, 11, 19 Bearing plate 4 Sheath hole 5 Through-hole 6 PC steel material 7, 13 Protrusion stable part 8, 14, 19, 23 Standing part 10 Connection part 12 Steel plate 15 Notch 17 Groove 18, 20 Bolt Hole 21 Bolt 22 Box Steel

Claims (5)

  In a partition structure in which one or a plurality of concrete blocks with a sheath hole are extended and connected in a longitudinal direction via a dry joint material with a through hole, the through hole of the dry joint material with a through hole is connected to the concrete block with a sheath hole. A continuous partition structure characterized in that the PC steel material inserted in the sheath hole and the through hole is tension-fixed so as to coincide with the position of the sheath hole.   A connecting portion or a groove portion is provided on the side wall portion on one end side of the concrete block with a sheath hole, and the connecting means is fixed to the adjacent concrete block with a sheath hole via a dry joint material with a through hole, The continuous partition structure according to claim 1, wherein one or a plurality of concrete blocks with a sheath hole and a dry joint material with a through hole are connected. The dry joint material with through-holes is a plate-shaped material made of any one of steel plate, plastic plate and hard rubber plate , a composite plate obtained by laminating or mixing them, and a laminate of elastic materials on both sides of the hard plate. The continuous partition structure according to claim 1 or 2, wherein the continuous partition structure is made of a material that hardly adheres to a concrete block.   A dry joint material with a through hole is temporarily attached to one end edge side of a concrete block with a sheath hole installed at a predetermined construction location so that the sheath hole and the through hole coincide with each other. Install another concrete block with a sheath hole on the other end edge side of the joint material so that the through hole and the sheath hole coincide with each other, and install and penetrate a similar concrete block with a sheath hole in the longitudinal direction as necessary. Repeat the appropriate number of temporary attachments of the dry joint material with holes, then insert the PC steel material through the sheath hole on the other end side of the concrete block with the sheath hole installed earlier, the concrete with the sheath hole installed last A method for constructing a continuous partition structure, wherein the PC steel material is tension-fixed at one end of a block.   A connecting means of a connecting part or a groove is provided on the side wall part which is one end part side of the concrete block with a sheath hole, and is temporarily attached to the one end edge side of the connecting means and the concrete block with the sheath hole, and tension of the PC steel material. While fixing the other concrete block with a sheath hole adjacent through a dry joint material with a through-hole while timing, one or more concrete blocks with a sheath hole and a dry joint material with a through-hole are connected. The method for constructing a continuous partition structure according to claim 4, wherein:

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