JP6159155B2 - Precast member set, precast member crimping method, structure - Google Patents

Description

  The present invention relates to a precast member set and a precast member pressure bonding method for constructing a structure by performing pressure bonding with a tension force introduced into a tension material.

  A structure such as a beam may be constructed by pressure bonding a precast member with a tension force introduced into the tension material. As this method, a precast member made of concrete with a sheath tube embedded is installed between the members on both sides, and tension is introduced into the PC steel material placed through the members on both sides and the sheath tube, and the precast member is crimped to the members on both sides. After joining, a grout filling operation is generally performed around the PC steel material.

  Further, in Patent Document 1, after a U-shaped precast member is stretched between columns, PC steel material is placed and concrete is placed inside the precast member. After the concrete is hardened, tension is applied to the PC steel material. Is described.

Japanese Utility Model Publication No. 62-115402

  However, when a sheath tube is used, there is a grout filling operation in the sheath tube, and the process becomes long. Moreover, there is a possibility that problems such as breakage of the PC steel material may occur due to the grout defect.

  The same applies to the case of Patent Document 1. That is, when introducing tension after hardening of concrete using ordinary PC steel, the PC steel is passed through a sheath tube to prevent the introduction of tension due to adhesion between PC steel and concrete. Therefore, it is necessary to arrange the sheath tube and grout filling work in the sheath tube.

  On the other hand, in recent years, there are unbonded PC steel materials, pre-grout PC steel materials, etc. that prevent adhesion to concrete and do not require the installation of the sheath tube and the grout filling operation as described above. However, there has not been established a construction method capable of suitably constructing a structure by pressure bonding a precast member using these PC steel materials. Even in Patent Document 1, since the precast member is U-shaped, it is difficult to confirm the placement of the PC steel material, and there is a problem that accurate placement is difficult.

  The present invention has been made in view of the above-described problems, and its purpose is to provide a precast member set that can suitably construct a structure by pressure bonding using a tension material such as an unbonded PC steel material or a pre-grout PC steel material. Is to provide.

A first invention for achieving the above-described object is a precast member set including a plurality of precast members for constructing a structure by performing pressure bonding using a tension force introduced into a tension material, When the precast members are combined so as to be continuous, at least a space in which the tension material can be arranged is formed inside, and each precast member has a substantially rectangular cross section perpendicular to the longitudinal direction, and the arrangement of the tension materials a precast member set, characterized in der Rukoto that a groove at a location corresponding to the position.
A second invention is a precast member set by a plurality of precast members for constructing a structure by performing pressure bonding using a tension force introduced into a tendon material, and the plurality of precast members are combined so as to be continuous. The precast member set is characterized in that at least a space in which the tendon can be disposed is formed inside, and a cross section perpendicular to the longitudinal direction of each precast member has a substantially U-shape.

  In the present invention, when a plurality of precast members are combined, a space through which the tension material is passed is formed on the inner side. Therefore, after some of the precast members are arranged first and the tension material is arranged there, It becomes possible to arrange the precast member. Accordingly, it is possible to easily confirm the arrangement of the tendon material with respect to the precast member, and it is possible to correct the arrangement appropriately and perform an accurate arrangement. Further, by using a plurality of precast members, the weight per piece can be reduced, and the construction becomes easy. When using an unbonded PC steel material or a pre-grout PC steel material as the tension material, the structure can be suitably constructed by introducing the tension force and performing the pressure bonding after the PC steel material is accurately arranged in this way.

It is desirable that at least one of the precast members is provided with a reinforcing bar in advance, and a part of the reinforcing bar protrudes into the space.
Thereby, when placing concrete in the space to form a composite beam, the integrity of the precast member and the concrete can be enhanced.

Further, a cross section perpendicular to the longitudinal direction of the flop Rekyasuto member, that it has a substantially U-shape, placement confirmation tendons performed suitably. In addition, there is an advantage that the shape can be easily manufactured close to a plate shape.

Moreover, it is desirable that at least one of the precast members is provided with a guide portion for arranging the tendon.
Thereby, a tension material can be positioned according to a guide part and arrangement | positioning becomes easy. The effect is particularly great when the tendon is arranged in a curved line.

According to a third aspect of the present invention, the step of disposing one precast member and a tension material between end members at both ends, and another precast member continuous with the one precast member between the end members at both ends. The tension material is placed in a space formed inside a plurality of precast members that are combined, and the concrete is placed in the space and the concrete is cured, and then the tension material is tensioned. And a step of crimping and joining the plurality of precast members to the end members at both ends by introducing a force.
The fourth invention has a plurality of precast members for constructing a structure by performing pressure bonding using the tension force introduced into the tension material, and when the plurality of precast members are combined so as to be continuous, A structure constructed using a precast member set in which at least a space in which the tendon can be arranged is formed, and is combined so that the plurality of precast members are continuous between end members at both ends. Concrete is provided in the formed space, the tension material not attached to the concrete is embedded in the concrete, and the plurality of precast members are connected to the both ends by the tension force introduced into the tension material. It is the structure characterized by being crimp-bonded to the end member.

Further, provided rebar in advance to any of the precast members even without low, it is desirable that a portion of the reinforcing bar projects into the space.
In addition, it is desirable that a cross section perpendicular to the longitudinal direction of at least one of the precast members has a substantially L shape or a substantially U shape.
Moreover, it is also desirable to arrange | position the said tension material using the guide part provided in the said one precast member.
Moreover, it is desirable to use an unbonded PC steel material or a pre-grout PC steel material as the tension material.

  ADVANTAGE OF THE INVENTION According to this invention, the precast member set etc. which can construct | assemble a structure suitably by the crimping | compression-bonding using tension materials, such as unbonded PC steel materials and pre-grout PC steel materials, can be provided.

The figure which shows the precast member set 1 The figure which shows the beam 10 constructed | assembled using the precast member set 1 The figure which shows the construction method of the beam 10 by pressure bonding of the precast member 3 The figure which shows the construction method of the beam 10 by pressure bonding of the precast member 3 The figure which shows the construction method of the beam 10 by pressure bonding of the precast member 3 The figure which shows the construction method of the beam 10 by pressure bonding of the precast member 3 The figure which shows the precast member set 1a The figure which shows the precast member set 1b The figure which shows the beam 10b constructed | assembled using the precast member set 1b The figure which shows the precast member set 1c The figure which shows the pillar 10c constructed | assembled using the precast member set 1c

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[First embodiment]
(1. Precast member set 1)
FIG. 1 is a view showing a precast member set 1 according to an embodiment of the present invention. Fig.1 (a) is a figure which shows the perpendicular direction cross section of the precast member 3 which comprises the precast member set 1, FIG.1 (b) is the precast member 3 seen from the direction shown by the arrow A of Fig.1 (a). It is a side view of the longitudinal direction.

  This precast member set 1 is for constructing a beam which is a horizontal member, and includes a pair of precast members 3 shown in FIG.

  The precast member 3 is a concrete member having a substantially L-shaped vertical cross section perpendicular to the longitudinal direction. In the precast member 3, a reinforcing bar 27 is embedded along the longitudinal direction, and a substantially L-shaped reinforcing bar 7 is embedded along the vertical cross section. One end of the reinforcing bar 7 protrudes upward from the bottom portion of the substantially L-shaped precast member 3, and the other end protrudes upward from the side wall portion of the precast member 3. The reinforcing bars 27 are for reinforcing the precast member 3 and are not joined to a panel zone member described later. Further, instead of the reinforcing bar 27, or in addition to the reinforcing bar 27, a PC steel material may be used to introduce tension to the precast member itself.

(2. Beam constructed using precast member set 1)
Next, with reference to FIG. 2, the beam 10 which is a structure constructed using the precast member set 1 will be described. 2A is a view showing a side surface of the beam 10, and FIG. 2B is a cross-sectional view taken along line BB in FIG. 2A. In FIG. 2A, a PC steel material 19 and a sheath 15 which will be described later are shown by dotted lines for explanation.

  The beam 10 is constructed between precast panel zone members 13 (end members) provided on the column body members 11 on both sides. Both ends of the beam 10 are pressure bonded to the panel zone member 13 using a PC steel material 19 which is a tension material. A joint 4 is provided between the beam 10 and the panel zone member 13.

  In this beam 10, a pair of substantially L-shaped precast members 3 are combined in a substantially U shape so as to be continuous at the ends of the bottom portion, and the longitudinal direction is aligned with the horizontal direction between the panel zone members 13. Be placed. At this time, one end of the reinforcing bar 7 protruding from the bottom side of the precast member 3 protrudes into the space inside the side wall portions of the two precast members 3.

  A PC steel material 19 is disposed in this space, and concrete 25 is placed. In the example shown in the figure, the concrete 25 is cast integrally with the upper floor slab portion, and the precast member 3 and the concrete 25 are integrated by both ends of the reinforcing bar 7 protruding from the precast member 3. Further, reinforcing bars 29 are arranged at necessary portions such as a floor slab portion.

  Both ends of the PC steel material 19 are inserted into the sheath tube 15 provided in each panel zone member 13. Both ends of the PC steel material 19 are fixed on the outer surface of the panel zone member 13 after being tensioned from the outside of the panel zone member 13.

  In the present embodiment, the PC steel material 19 is an unbonded PC steel material or a pre-grout PC steel material. The unbonded PC steel material is obtained by coating a steel material coated with grease with a coating material such as polyethylene. The pre-grout PC steel material is a steel material that is placed in a sheath and filled with a resin composition that cures over time, and tension is introduced before the resin composition is cured. In any case, the adhesion between the steel material and the concrete 25 is prevented, and a tension force can be introduced even after the concrete 25 is cured. As an unbonded PC steel material or a pre-grout PC steel material, for example, an unbonded PC steel strand, a pregrout PC steel strand, an unbonded PC steel rod, a pregrout PC steel rod, or the like can be used.

(3. Construction method of beam by pressure bonding of precast member 3)
Next, a method of constructing the beam 10 shown in FIG. 2 by pressure bonding of the precast member 3 will be described with reference to FIGS. 3-6, (a) figure is a figure which shows the side surface similar to FIG. 2 (a), (b) figure is similar to FIG.2 (b), and line BB of (a) figure is similar to FIG. It is sectional drawing by.

  In the present embodiment, as shown in FIGS. 3A and 3B, first, one precast member 3 is arranged between the panel zone members 13 installed on the column main body members 11 on both sides. The precast member 3 is supported by a temporary receiving bracket 17 attached to the column main body member 11.

  Then, as shown in FIGS. 4A and 4B, the PC steel material 19 is disposed between the panel zone members 13. Both ends of the PC steel material 19 are inserted into the sheath tube 15 provided in the panel zone member 13.

  After that, as shown in FIGS. 5A and 5B, the other precast member 3 is combined with one precast member 3 as described above, and is supported between the temporary support bracket 17 and disposed between the panel zone members 13. To do. At this time, one end of the above-described reinforcing bar 7 of the precast member 3 protrudes in the space inside the side wall portion of the precast member 3 and the PC steel material 19 is disposed. Further, a joint 4 is provided between the precast member 3 and the panel zone member 13 to arrange the necessary reinforcing bars 29. Here, bar arrangement of the floor slab portion above the precast member 3 is performed.

  Thereafter, as shown in FIGS. 6A and 6B, the concrete 25 is placed in the space inside the floor slab portion and the side wall portion of the precast member 3. After the concrete 25 is hardened, the PC steel material 19 is tensioned from the outside of the panel zone member 13 as indicated by an arrow a in FIG. 6A, and both ends are fixed to the panel zone member 13. Thereby, the composite beam by the precast member 3 and the concrete 25 is pressure-bonded to the panel zone members 13 at both ends, and the beam 10 shown in FIG. 2 is constructed. The sheath tube 15 of the panel zone member 13 is filled with a grout material from an injection hole (not shown). Further, the provisional receiving bracket 17 is left as it is, but can be removed at an appropriate time if necessary.

  Thus, in 1st Embodiment, when the several precast member 3 is combined, since the space which lets PC steel material 19 pass is formed inside, one precast member 3 is previously arrange | positioned there, After the PC steel material 19 is arranged, the other precast member 3 can be arranged. Therefore, it is possible to easily confirm the arrangement of the PC steel material 19 with respect to the precast member 3, and correct the arrangement as appropriate to perform an accurate arrangement. Moreover, by using the several precast member 3, the weight per piece can be made light and construction becomes easy. Thus, after the unbonded PC steel material or the pre-grout PC steel material is accurately arranged, the concrete 25 is placed, and after the hardening, the tension is introduced and the pressure bonding is performed to suitably construct the beam 10. By using an unbonded PC steel material or a pre-grout PC steel material, installation of a sheath tube and a grout operation are not required, the work process is shortened, and problems such as breakage of the PC steel material 19 due to a grout defect do not occur.

  Moreover, in this embodiment, since the end of the reinforcing bar 7 provided in the precast member 3 protrudes into said space, the integrity of the concrete 25 and the precast member 3 to be placed in the space can be enhanced.

  Moreover, since each precast member 3 has a substantially L-shaped vertical cross section, when one of the precast members 3 is arranged as shown in FIG. 3 and the PC steel material 19 is arranged as shown in FIG. The arrangement of 19 can be easily confirmed from the side, and can be recorded by photographing. In addition, the shape of the precast member 3 is also close to a plate shape and can be easily manufactured.

  In this embodiment, after the concrete 25 is hardened, the tensioning operation is performed to tension the PC steel material 19 and fix both end portions to the panel zone member 13. However, the timing for performing the tensioning operation is not limited to this, and each precast member 3 and Any time after the joint 4 has been installed.

For example, after installing each precast member 3 and joint 4, before placing concrete 25, some PC steel materials 19 are tensioned with final tension, and after the concrete 25 is cured, the remaining PC The steel material 19 may be tensioned with final tension. Alternatively, after each precast member 3 and joint 4 are installed, before the concrete 25 is placed, all the PC steel materials 19 are tensioned with a tension force weaker than the final tension force, and after the concrete 25 is cured You may perform tension work of all the PC steel materials 19 with final tension power.
Furthermore, after installing each precast member 3 and joint 4, before placing concrete 25, some PC steel materials 19 are subjected to tension work with a tension force weaker than the final tension force, and the remaining PC steel materials The tension work may be performed with final tension on all the PC steel materials 19 after the concrete 25 is hardened without being tensioned. In addition, after installing each precast member 3 and joint 4, before placing concrete 25, some PC steel materials 19 are subjected to tension work with a tension force weaker than the final tension force, and the remaining PCs The steel material 19 may be tensioned with a final tension force, and after the concrete 25 is hardened, the tension work may be performed with the final tension force for some of the PC steel materials 19 described above. Alternatively, after the precast members 3 and joints 4 are installed, it is possible to perform tension work with final tension on all the PC steel materials 19 before placing the concrete 25.
In any case, the precast member 3 can be supported by introducing tension before the concrete 25 is placed, and the temporary support bracket 17 can be omitted.

  In the present embodiment, the beam 10 is constructed between the precast panel zone members 13 provided on the column main body member 11. However, the present invention is not limited to this. You can also build beams. However, when the beam 10 is constructed by pressure bonding between the panel zone members 13 provided separately from the column main body member 11, there is an advantage that bending to the inside of the column main body member 11 due to the tension of the PC steel material 19 can be prevented.

  Further, in this embodiment, the PC steel material 19 is an unbonded PC steel material or a pre-grout PC steel material, but it is also possible to use a normal PC steel material that adheres to concrete. In this case, it is preferable to tension the concrete 25 before placing it.

  Further, in the present embodiment, a pair of substantially L-shaped precast members 3 are used in combination so as to be substantially U-shaped, but the number and shape of the precast members constituting the precast member set are not limited thereto, What is necessary is just to form the space which arrange | positions a tension material inside and casts concrete when combining a precast member so that it may continue. For example, one precast member may be substantially L-shaped and the other precast member may be substantially I-shaped, and these may be combined in a substantially U-shape.

  Or as a some precast member which comprises a precast member set, when these are combined so that it may continue, the shape where only the space which arranges a tension material may be formed.

  The example is the precast member set 1a shown in FIG. Fig.7 (a) is a figure which shows the perpendicular direction cross section of the precast member 3a which comprises the precast member set 1a, FIG.7 (b) is the precast member 3a seen from the direction shown by the arrow C of Fig.7 (a). It is a side view of the longitudinal direction. Moreover, FIG.7 (c) is a figure which shows the state which has arrange | positioned the PC steel material 19 combining the precast member 3a.

  This precast member set 1a is composed of a pair of precast members 3a having a substantially rectangular vertical cross section and having a groove 45 at a position corresponding to the position where the PC steel material 19 is disposed. The precast member 3a is made of concrete and is omitted in the drawing, but a reinforcing bar or the like is provided inside as needed.

  As shown in FIG. 7C, when both the precast members 3a are combined so that the surfaces provided with the grooves 45 are overlapped and continuous, the positions of the grooves 45 of the both members correspond. Thereby, the space for arrange | positioning PC steel material 19 inside the precast member 3a is formed.

  Also in this case, the same beam as in FIG. 2 can be constructed in the same procedure as described above, and the same effect as described above can be obtained. However, in this case, the placement of the concrete 25 in the beam portion is omitted, and instead, a grout material or the like is injected into the groove 45 around the PC steel material 19 from an injection hole (not shown). The PC steel material 19 is not limited to an unbonded PC steel material or a pre-grout PC steel material, and may be a normal PC steel material.

[Second Embodiment]
(1. Precast member set 1b)
Next, a second embodiment of the present invention will be described. FIG. 8 is a view showing a precast member set 1b according to the second embodiment, and is a view showing a vertical section of a precast member 3b constituting the precast member set 1b.

  This precast member set 1b is for constructing a beam and comprises a pair of precast members 3b shown in FIG. This precast member 3b is substantially the same as the precast member 3 of the first embodiment, but the first embodiment is provided in that one precast member 3b is provided with a guide portion 31 projecting sideways from the side wall portion. And different.

(2. A beam constructed using the precast member set 1b)
Next, with reference to FIG. 9, the beam 10b constructed | assembled using the precast member set 1b is demonstrated. Fig.9 (a) is a figure which shows the side surface of the beam 10b, FIG.9 (b) is sectional drawing by line DD of Fig.9 (a). In FIG. 9, the position of the guide portion 31 is also indicated by a dotted line.

  The beam 10b is different from the first embodiment in that the PC steel material 33 is disposed and positioned on the guide portion 31 and is disposed in a curved shape that is concave downward. This beam 10b is suitable because it can withstand a large upper load because a force upward is generated by tensioning the PC steel material 33.

  As for the PC steel material 33, similarly to the first embodiment, an unbonded PC steel material or a pre-grout PC steel material is used, and is tensioned after the concrete 25 is hardened. In the example shown in the figure, all the PC steel materials 33 are arranged in a curved shape, but a part of the PC steel materials may be arranged in a curved shape and the rest may be arranged in a straight line.

  Also in the second embodiment, the beam 10b can be constructed similarly to the first embodiment, and the same effect as the first embodiment can be obtained. Further, since the PC steel material 33 can be positioned by the guide portion 31, the PC steel material 33 can be easily arranged. This is particularly effective when the PC steel material 33 is arranged in a curved shape as in this embodiment. The PC steel material 33 may be a normal PC steel material. In this case, it is necessary to arrange the sheath tube in a curved shape before placing the concrete 25 and to pass the PC steel material 33 through the inside.

[Third embodiment]
(1. Precast member set 1c)
Next, a third embodiment of the present invention will be described. FIG. 10 is a view showing a precast member set 1c according to the third embodiment. FIG. 10A is a diagram showing a horizontal cross section of the precast member 3c constituting the precast member set 1c, and FIG. 10B is a view of the precast member 3c as viewed from the direction indicated by the arrow E in FIG. It is a side view of a longitudinal direction.

  The precast member set 1c is for constructing a pillar that is a vertical member, and includes a pair of precast members 3c shown in FIG.

  The precast member 3c is a concrete member having a substantially U-shaped horizontal cross section perpendicular to the longitudinal direction. In the precast member 3c, a reinforcing bar 61 is embedded along the longitudinal direction, and a substantially U-shaped reinforcing bar 57 is embedded along a horizontal cross section. Both ends of the reinforcing bar 57 protrude from both ends of the substantially U-shaped precast member 3c toward each other.

(2. Column constructed using precast member set 1c)
Next, with reference to FIG. 11, the pillar 10c which is a structure constructed | assembled using the precast member set 1c is demonstrated. Fig.11 (a) is a figure which shows the side surface of the pillar 10c, FIG.11 (b) is sectional drawing by line FF of Fig.11 (a). Moreover, FIG.11 (c) is a figure for demonstrating the construction method of the pillar 10c. In FIGS. 11A and 11C, a PC steel material 63 and a sheath tube 69, which will be described later, are shown by dotted lines for explanation.

  The pillars 10c are constructed between panel zone members 67 (end members) provided on the side of the upper and lower beam body members 70 on each floor of the building. Both end portions of the column 10 c are pressure-bonded to the panel zone member 67 using the PC steel material 63. A joint 65 is provided between the column 10 c and the panel zone member 67.

  In this column 10 c, a pair of substantially U-shaped precast members 3 c are combined in a substantially square shape so that both ends thereof are continuous with each other, and the longitudinal direction is arranged in accordance with the vertical direction between the panel zone members 67. The At this time, both end portions of the above-described reinforcing bar 57 protrude into the space inside both the precast members 3c.

  In this space, a PC steel material 63 is arranged, and concrete 62 is placed. The precast member 3d and the concrete 62 are integrated by the reinforcing bar 57 protruding from the precast member 3d.

  The upper end portion of the PC steel material 63 is inserted into a sheath tube 69 provided in the upper panel zone member 67. The PC steel 63 is fixed on the upper surface of the panel zone member 67 after introducing a tension force from above the upper panel zone member 67. The lower end portion of the PC steel material 63 is connected to the upper end portion of the PC steel material 63 on the lower floor using a connecting material 66. As the PC steel material 63, an unbonded PC steel material or a pre-grout PC steel material is used.

  As for the procedure for constructing the column 10c by the pressure bonding of the precast member 3c, the PC steel material 63 is replaced with the PC steel material 63 after placing one precast member 3c between the upper and lower panel zone members 67 as in the first embodiment. After that, the other precast member 3c is combined and arranged as described above. Then, concrete 62 is placed from the injection hole (not shown) into the space inside the precast member 3c, and after hardening, tension is introduced into the PC steel 63 from above as shown by the arrow b in FIG. 11 (c). Then, the upper end is fixed to the upper surface of the upper panel zone member 67. In this embodiment, this is repeated and the pillar 10c is constructed from the lower floor to the upper floor. In addition, the lower end part of PC steel material 63 of the lowest floor is fixed to a building etc. separately.

  In the third embodiment, the same effect as in the first embodiment can be obtained. In addition, it is also possible to use the normal PC steel material adhering to concrete as the PC steel material 63, In this case, it is good to be tensioned before placing the concrete 62.

  Moreover, in 3rd Embodiment, although the precast member set 1c was comprised with two substantially U-shaped precast members 3c, the structure of a precast member set is not restricted to this.

  For example, the precast member set may be constituted by four precast members having a substantially L-shaped cross section. In this case, if the four members are combined so as to be continuous in a substantially square shape, a space similar to the above can be formed inside. Thus, what is necessary is just to form the space which arrange | positions at least a tension material inside, when combining a precast member so that it may continue.

  As mentioned above, although embodiment of this invention was described referring an accompanying drawing, the technical scope of this invention is not influenced by embodiment mentioned above. It is obvious for those skilled in the art that various modifications or modifications can be conceived within the scope of the technical idea described in the claims, and these are naturally within the technical scope of the present invention. It is understood that it belongs.

1, 1a, 1b, 1c ......... Precast member set 3, 3a, 3b, 3c ......... Precast members 7, 27, 29, 57, 61 ......... Rebars 10, 10b ......... Beam 10c ......... Column 13, 67 ... Panel zone members 19, 33, 63 ... PC steel 25, 62 ... Concrete 31 ... Guide section

Claims (10)

It is a precast member set by a plurality of precast members for constructing a structure by performing pressure bonding using a tension force introduced into a tension material,
When the plurality of precast members are combined so as to be continuous, at least a space in which the tendon can be arranged is formed inside ,
Each precast member cross section perpendicular to the longitudinal direction is substantially rectangular, precast member set, characterized in der Rukoto that a groove at a location corresponding to the position of the tendon. It is a precast member set by a plurality of precast members for constructing a structure by performing pressure bonding using a tension force introduced into a tension material,
When the plurality of precast members are combined so as to be continuous, at least a space in which the tendon can be arranged is formed inside ,
Cross section perpendicular to the longitudinal direction of the precast members, precast members set, characterized in Rukoto to have a substantially U-shape. Reinforcing bars are provided in advance in at least one of the precast members,
The precast member set according to claim 2, wherein a part of the reinforcing bar protrudes into the space. At least one of precast members, precast members set according to claim 2 or claim 3, characterized in that the guide unit for performing the placement of the tension member is provided. Placing one precast member and tendon between the end members at both ends;
Combining the other precast members with the one precast member between the end members at both ends, and disposing the tension material in a space formed inside the plurality of precast members combined; and ,
After the concrete is placed in the space and the concrete is hardened, a step of pressure bonding the plurality of precast members to the end members at both ends by introducing a tension force to the tension material;
A press-bonding method for a precast member, comprising: Reinforcing bars are provided in advance in at least one of the precast members,
The method for crimping a precast member according to claim 5 , wherein a part of the reinforcing bar protrudes into the space. The method for pressure-bonding a precast member according to claim 5 or 6 , wherein a cross section perpendicular to the longitudinal direction of at least one of the precast members has a substantially L shape or a substantially U shape. The pretensioning member crimping method according to any one of claims 5 to 7 , wherein the tendon is arranged using a guide portion provided on the one precasting member. As the tension member, compression method of precast members according to any one of claims 5 to 8, characterized by using the unbonded PC steel or Puregurauto PC steel. Having a plurality of precast members for constructing a structure by performing pressure bonding using the tension force introduced into the tension material,
When the plurality of precast members are combined so as to be continuous, the structure is constructed using a precast member set in which at least a space in which the tendon can be arranged is formed,
Concrete is provided in the space formed by combining the plurality of precast members so as to be continuous between the end members at both ends, and the tension material not attached to the concrete is embedded in the concrete. ,
A structure in which the plurality of precast members are pressure bonded to the end members at both ends by a tension force introduced into the tension material.

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