JP2018035659A - Method for joining precast concrete member, and guide member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for joining a precast concrete member for readily joining a precast member, and a guide member.SOLUTION: A method for joining a precast concrete member is for joining a side wall part (a precast concrete member) 3 with a bottom slab part (a concrete member) 2, and includes: a first guide member fixing step for fixing a guide member 6A that protrudes toward the bottom slab part 2 side to a side surface 3a of the side wall part 3; a guide member contacting step for lifting the side wall part 3 to a position opposite the bottom slab part 2, and bringing the guide member 6A in contact with a side surface 22a of a wall part 22 of the bottom slab part 2; and a precast concrete member lowering step for lowering the side wall part 3 onto the bottom slab part 2 while the guide member 6A is in contact with the side surface of the bottom slab part 2.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a method for joining precast concrete members and a guide member for joining precast concrete members.

Conventionally, when a concrete structure is constructed, a construction method is known in which precast concrete members manufactured in advance in a factory or the like are joined on site (see, for example, Patent Document 1).
When two precast concrete members are joined up and down, a reinforcing bar that protrudes from the concrete part of either the upper or lower precast concrete to the other precast concrete member is inserted into the sleeve of the other precast concrete. Thus, it is necessary to lower the lifted upper precast concrete to a predetermined position.

JP2015-74886A

  However, there is a problem that it takes time to align the reinforcing bar of one precast concrete member and the sleeve of the other precast concrete member. Also, if the upper precast concrete member lifted with the position of the reinforcing bar of one precast concrete member shifted from the position of the sleeve of the other precast concrete member is lowered, damage to the sleeve or bending of the reinforcing bar will occur. May occur.

  Then, an object of this invention is to provide the joining method and guide member of a precast concrete member which can join a precast concrete member easily.

  In order to achieve the above object, a precast concrete member joining method according to the present invention is a precast concrete member joining method in which a precast concrete member is joined to a concrete member, and projects to the side of the precast concrete member toward the concrete member. A first guide member fixing step for fixing the guide member; a guide member abutting step for lifting the precast concrete member to oppose the concrete member and abutting the guide member on a side surface of the concrete member; and the guide member And a precast concrete member lowering step of lowering the precast concrete member onto the concrete member in a state of being in contact with a side surface of the concrete member.

  The guide member according to the present invention is a guide member for joining a precast concrete member to a concrete member. The guide member is formed on a side surface of the precast concrete member such that a tip portion projects from the end of the precast concrete member toward the concrete member. When the fixed and lifted precast concrete member is opposed to the concrete member in a separated state, the precast concrete member is configured to be able to contact a side surface of the concrete member.

In the present invention, when the suspended precast concrete member is lowered onto the concrete member, since the guide member is in contact with the side surface of the concrete member, the position of the precast concrete member is stabilized, and the precast concrete member is moved to the concrete member. Can be placed in the normal position.
The side surface of the precast concrete member and the side surface of the concrete member are arranged on the sides of the surfaces that face each other when they are joined to each other, and indicate surfaces that are on the surfaces that intersect with the surfaces that face each other.

Further, in the method for joining precast concrete members according to the present invention, a second guide member fixing step for fixing the guide member to a side surface of the concrete member after the precast concrete member lowering step, and a second guide member fixing step. A grout filling step of filling a grout material between the precast concrete member and the concrete member later, and a guide member removing step of removing the guide member from the precast concrete member and the concrete member after the grout material filling step. It is preferable to have.
By setting it as such a structure, a guide member can be utilized as a temporary fixing jig until a grout filling process is complete | finished, and the fall of a precast concrete member can be prevented. Further, the trouble of providing a dedicated temporary fixing jig until the grout filling process is completed can be omitted.

  In the precast concrete member joining method according to the present invention, in the guide member contact step, the guide member is disposed on a first side surface of the concrete member and a second side surface that intersects the first side surface. In the precast concrete member lowering step, the precast concrete member may be lowered onto the concrete member in a state where the guide member is in contact with the first side surface and the second side surface.

  Further, in the guide member according to the present invention, the guide member has a first side surface and a first side surface of the concrete member when the suspended precast concrete member is opposed to the concrete member in a separated state. You may be comprised so that contact | abut to each of the 2nd side surface arrange | positioned in the surface which cross | intersects.

  With this configuration, when the suspended precast concrete member is lowered onto the concrete member, the guide member comes into contact with the first side surface and the second side surface where the concrete member intersects. The position of the member is stable, and the precast concrete member can be arranged in a normal position with respect to the concrete member.

  In the precast concrete member joining method according to the present invention, the guide member has a first contact portion and a second contact portion, and in the guide member contact step and the precast concrete member lowering step, The first contact portion is contacted to the first side surface, the second contact portion is contacted to the second side surface, and the first contact portion is moved to the concrete member after the precast concrete member lowering step. A first abutting portion fixing step of removing the second abutting portion from the precast concrete member, and a grout between the precast concrete member and the concrete member after the first abutting portion fixing step. After the grout filling step for filling the material and the grout material filling step, the first abutting portion is connected to the precast concrete member and the component. A first contact portion detaching step of detaching from REITs member may have.

  In the guide member according to the present invention, the guide member includes a first contact portion that can contact the first side surface and a second contact portion that can contact the second side surface. The second contact portion may be configured to be detachable from the first contact portion.

  With such a configuration, only the first contact portion can be fixed to the concrete member, and the second contact portion can be configured not to be fixed to the concrete member. A guide member can be provided even when it interferes with other members.

  According to the present invention, a precast concrete member can be easily joined.

It is a figure which shows an example of the box culvert by 1st Embodiment of this invention. It is a figure explaining the upper part side of the bottom plate part by a 1st embodiment of the present invention. It is a figure explaining the lower part side of a side wall part and a guide member by 1st Embodiment of this invention. It is a figure explaining the guide member fixed to the side wall part and bottom plate part by 1st Embodiment of this invention. It is a figure explaining the 1st guide member fixing process by a 1st embodiment of the present invention. It is a figure explaining the guide member contact process by 1st Embodiment of this invention. It is a side view explaining the guide member by 2nd Embodiment of this invention. It is a top view explaining the guide member by a 2nd embodiment of the present invention. It is a figure explaining the 1st guide member fixing process by 2nd Embodiment of this invention. It is a figure explaining the guide member contact process by 2nd Embodiment of this invention. It is a figure explaining the 1st contact part fixing process by 2nd Embodiment of this invention.

(First embodiment)
Hereinafter, the joining method and guide member of the precast concrete member by 1st Embodiment of this invention are demonstrated based on FIG. 1 thru | or FIG.
In this embodiment, the method for joining the precast concrete members is a method for joining the side wall portion (precast concrete member) 3 of the box culvert 1 shown in FIG. 1 to the bottom plate portion (concrete member) 2, and the guide member is the box culvert 1. The side wall 3 is used as a guide member 6A used when the bottom plate 2 is joined.

First, the box culvert 1 will be described.
The box culvert 1 has a bottom plate portion 2, a pair of side wall portions 3 and 3 standing on the bottom plate portion 2, and a top plate portion 4 provided on the pair of side wall portions 3 and 3. ing.
Here, a direction in which the box culvert 1 extends (a direction orthogonal to the paper surface of FIG. 1) is a length direction, and a horizontal direction orthogonal to the length direction is a width direction.

The bottom plate portion 2 includes a flat plate portion 21 whose plate surface is a substantially horizontal surface, and wall portions 22 and 22 that are provided upright from both ends in the width direction of the flat plate portion 21. The bottom plate portion 2 may be made of one or a plurality of precast concrete members, or may be made of in-situ concrete.
As shown in FIG. 2, a plurality of sleeves 24, 24... Extending in the vertical direction and opening upward are formed on the walls 22, 22. On the lower side of the inside of the sleeves 24, 24..., The upper sides of the reinforcing bars 25, 25.

Returning to FIG. 1, the side wall 3 is formed in a flat plate shape whose plate surface is a substantially vertical surface. The side wall 3 is made of precast concrete.
As shown in FIG. 1 and FIG. 3, the side wall portion 3 includes a plurality of reinforcing bars extending in the vertical direction while lower side portions 31, 31. .. (See FIG. 1) protrude downward from the upper end surface of the concrete portion 32.
The lower side portions 31, 31... Of the reinforcing bars protruding downward from the concrete portion 32 of the side wall portion 3 are inserted into the sleeves 24, 24. The upper side 33,33 ... of the reinforcing bar which protrudes from the upper end part of the concrete part 32 of the side wall part 3 is inserted in the sleeves 44,44 of the top plate part 4. As shown in FIG.

As shown in FIG. 1, the top plate portion 4 includes a flat plate portion 41 whose plate surface is a substantially horizontal surface, and wall portions 42 and 42 that protrude downward from the vicinity of both end portions in the width direction of the flat plate portion 41. Have. The top plate portion 4 is made of precast concrete.
A plurality of sleeves 44, 44... Are formed on the walls 42, 42 so as to extend in the vertical direction and open downward. On the upper side of the inside of the sleeves 44, 44..., The upper sides of the reinforcing bars 45, 45.

Side wall portions 3, 3 are disposed above the wall portions 22, 22 of the bottom plate portion 2, and wall portions 42, 42 of the top plate portion 4 are disposed above the side wall portions 3, 3. The grout material 5 is filled between the wall portions 22 and 22 of the bottom plate portion 2 and the side wall portions 3 and 3 and between the side wall portions 3 and 3 and the wall portions 42 and 42 of the top plate portion 4.
Side surfaces 22a, 22a of the wall portions 22, 22 of the bottom plate portion 2 in the width direction outside, side surfaces 3a, 3a of the side wall portions 3, 3 in the width direction outer side, and width portions outside of the wall portions 42, 42 of the top plate portion 4 The side surfaces 42a and 42a are arranged so as to be flush with each other in the same vertical plane.

Next, the guide member 6A will be described.
As shown in FIGS. 3 and 4, the guide member 6 </ b> A includes a long long plate portion 61 formed of a steel plate or the like, a first fixture 62 that fixes the long plate portion 61 to the side wall portion 3, and a long plate. And a second fixture 63 (see FIG. 4) that fixes the portion 61 to the wall portions 22 of the bottom plate portion 2. The long plate portion 61 is configured to be detachable from the side wall portion 3 and the wall portions 22 of the bottom plate portion 2.

The long plate portion 61 is configured such that the upper side can be fixed to the side surface 3 a on the outer side in the width direction of the side wall portion 3 in a posture extending in the vertical direction. When the long plate portion 61 is fixed to the side wall portion 3, the lower end portion 61 a is disposed below the lower side portions 31, 31 of the reinforcing bars protruding from the lower end surface of the concrete portion 32 of the side wall portion 3. , Projecting downward.
The long plate portion 61 is configured such that the lower side can be fixed to the side surface 22 a on the outer side in the width direction of the wall portion 22 of the bottom plate portion 2.

Next, a method for joining the side wall portion 3 to the bottom plate portion 2 (a method for joining precast concrete members) will be described.
First, as shown in FIG. 3, the guide member 6A is fixed to the side wall 3 (first guide member fixing step).
The upper side of the long plate portion 61 of the guide member 6 </ b> A is fixed to the side surface 3 a on the outer side in the width direction of the side wall portion 3 by the first fixture 62. The lower end portion 61 a of the long plate portion 61 of the guide member 6 </ b> A is arranged to be lower than the lower side 31 of the reinforcing bar protruding from the lower end surface of the concrete portion 32 of the side wall portion 3. The guide member 6A may be fixed when the side wall portion 3 is manufactured.

Subsequently, as shown in FIG. 5, the side wall portion 3 is lifted so that the lower end portion of the side wall portion 3 faces the wall portion 22 of the bottom plate portion 2, and as shown in FIG. The bottom plate portion 2 is brought into contact with the outer side surface 22a in the width direction of the wall portion 22 (guide member contact step).
By bringing the long plate portion 61 of the guide member 6 </ b> A into contact with the side surface 22 a on the outer side in the width direction of the wall portion 22 of the bottom plate portion 2, the side wall portion 3 is disposed immediately above the wall portion 22 of the bottom plate portion 2.

Then, as shown in FIG. 4, the side wall part 3 is lowered | hung on the wall part 22 of the bottom plate part 2 (bottom plate part lowering process (precast member lowering process)).
In a state where the long plate portion 61 of the guide member 6A is in contact with the side surface 22a on the outer side in the width direction of the wall portion 22 of the bottom plate portion 2, the side wall portion 3 is lowered onto the wall portion 22 of the bottom plate portion 2, .. Are inserted into the sleeves 24, 24.

Subsequently, the long plate portion 61 of the guide member 6A is fixed to the bottom plate portion 2 (second guide member fixing step).
The lower side of the long plate portion 61 of the guide member 6 </ b> A is fixed to the side surface 22 a on the outer side in the width direction of the wall portion 22 of the bottom plate portion 2 by the second fixture 63.
Thereby, the bottom plate portion 2 and the side wall portion 3 are temporarily fixed by the guide member 6A.

Subsequently, the grout material 5 is filled between the sleeves 24, 24... Of the bottom plate portion 2 and between the bottom plate portion 2 and the side wall portion 3 (grouting step).
When the grout material 5 is cured, the bottom plate portion 2 and the side wall portion 3 are joined.

Subsequently, after the grout material 5 is cured, the guide member 6A is removed from the side wall portion 3 and the bottom plate portion 2 (guide member removal step).
While removing the 1st fixing tool 62 from the side wall part 3, the 2nd fixing tool 63 is removed from the bottom plate part 2, and the long plate part 61 is removed from the side wall part 3 and the bottom plate part 2. FIG.

  In order to join the top plate portion 4 to the side wall portion 3, the guide member 6A is attached to the side surface 42a on the outer side in the width direction of the wall portion 42 of the top plate portion 4, and the long plate portion 61 of the guide member 6A is attached to the side wall portion. 3, the top plate part 4 that is lifted is lowered onto the side wall part 3 in a state of being in contact with the side surface 3 a on the outer side in the width direction 3. Thereby, the top plate part 4 can also be arrange | positioned with respect to the side wall part 3 in a normal position.

Next, the operation and effect of the precast concrete member joining method and guide member according to the first embodiment will be described with reference to the drawings.
In the joint structure of the precast concrete member according to the first embodiment, when the suspended side wall 3 is lowered onto the wall 22 of the bottom slab 2, the guide member 6 </ b> A is located on the outer side in the width direction of the wall 22 of the bottom slab 2. Since the side surface 22 a comes into contact with the side wall portion 3, the position of the side wall portion 3 is stable, and the side wall portion 3 can be disposed in a normal position with respect to the bottom plate portion 2.
Thereby, alignment of the side wall part 3 can be performed easily, and the side wall part 3 can be easily joined to the bottom plate part 2.

  Further, since the alignment of the side wall part 3 can be easily performed, the position of the lower side 31, 31... Of the reinforcing bar of the side wall part 3 and the position of the sleeves 24, 24. There is no risk of damage to the sleeves 24, 24 ... and bending of the reinforcing bars.

  In the present embodiment, the side wall 3 can be prevented from falling by using the guide member 6A as a temporary fixing jig until the grout filling process is completed. Further, the trouble of providing a dedicated temporary fixing jig separately from the guide member 6A can be omitted.

(Second Embodiment)
Next, the second embodiment will be described with reference to the accompanying drawings. However, the same or similar members and parts as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted. A different configuration will be described.
As shown in FIGS. 7 to 9, in the precast concrete member joining method and the guide member according to the second embodiment, the guide member 6 </ b> B is near the end surface in the length direction of the side wall portion 3 and the length of the wall portion 22 of the bottom plate portion 2. The guide member 6B is configured to be attached in the vicinity of the end face in the vertical direction, and the form of the guide member 6B is different from the form of the guide member 6A according to the first embodiment.

  In 2nd Embodiment, the side surface 3a of the width direction outer side of the side wall part 3 is made into the 1st side surface 3a, and the end surface of the length direction of the side wall part 3 is made into the 2nd side surface 3b. The first side surface 3a and the second side surface 3b are continuous so as to form a substantially perpendicular corner 3c. The side surface 22a on the outer side in the width direction of the wall portion 22 of the bottom plate portion 2 is defined as a first side surface 22a, and the end surface in the length direction of the side wall portion 3 is defined as a second side surface 22b. The first side surface 22a and the second side surface 22b are continuous so as to form a substantially perpendicular corner 22c (see FIG. 9).

  The guide member 6B according to the second embodiment includes a first contact plate portion (first contact portion) 64 formed of a steel plate and the like, and a first contact plate portion 64 formed of a steel plate and the like that can be attached to and detached from the first contact plate portion 64. 2 abutting plate portion (second abutting portion) 65, first fixing member 66 for fixing the first abutting plate portion 64 to the side wall portion 3, and the first abutting plate portion 64 as a wall portion of the bottom plate portion 2. The second fixing member 67 (see FIG. 11) that is fixed to the second fixing member 22, and the third fixing member 68 that fixes the second contact plate portion 65 to the first contact plate portion 64.

  The first contact plate portion 64 has a locking hole to which the third fixing tool 68 is attached and detached, and other than that, it is formed in substantially the same form as the long plate portion 61 of the first embodiment. The first abutting plate portion 64 is configured to be detachable from the side wall portion 3 and the wall portion 22 of the bottom plate portion 2 in the same manner as the long plate portion 61 of the first embodiment. When the first abutting plate portion 64 is attached to the side wall portion 3 and the wall portion 22 of the bottom plate portion 2, the surface on the side that contacts the side wall portion 3 and the wall portion 22 of the bottom plate portion 2 is defined as an inner side surface 64a, and vice versa. The side surface is referred to as an outer surface 64b.

The second abutment plate portion 65 is formed in a shape in which a flat plate is bent at a substantially right angle so as to be L-shaped, and the first flat plate portion 651 disposed on one side of the bent portion and the bent portion And a second flat plate portion 652 disposed on the other side. The surfaces of the first flat plate portion 651 and the second flat plate portion 652 that form a substantially right angle with each other are referred to as inner side surfaces 651a and 652a, respectively.
The second contact plate portion 65 is configured to be attached to the first contact plate portion 64 so that the inner side surface 651a of the first flat plate portion 651 contacts the outer surface 64b of the first contact plate portion 64. Yes. When the second contact plate portion 65 is attached to the first contact plate portion 64, the lower end portion 64c of the first contact plate portion 64 and the lower end portion 65a of the second contact plate portion 65 have substantially the same height. Is arranged (see FIG. 7).

Next, the method (joining method of a precast concrete member) which joins the side wall part 3 to the base plate part 2 using the guide member 6B by 2nd Embodiment is demonstrated.
First, the guide member 6B is fixed to the side wall portion 3 (first guide member fixing step).
The second abutting plate portion 65 is attached to the first abutting plate portion 64 of the guide member 6B, and the upper side of the first abutting plate portion 64 is placed near the corner portion 3c of the first side surface 3a of the side wall portion 3. Fix with 1 fixing tool 66.
At this time, the inner side surface 652 a of the second flat plate portion 652 of the second contact plate portion 65 is brought into contact with the second side surface 3 b of the side wall portion 3. Further, the lower end portion 64 c of the first contact plate portion 64 and the lower end portion 65 a of the second contact plate portion 65 are below the lower side 31 of the reinforcing bar protruding from the lower end surface of the concrete portion 32 of the side wall portion 3. Arrange as follows.
The guide member 6B may be fixed to the side wall portion 3 when the side wall portion 3 is manufactured.

Subsequently, as shown in FIG. 9, the side wall portion 3 is lifted so that the lower end portion of the side wall portion 3 faces the wall portion 22 of the bottom plate portion 2, and as shown in FIG. 10, the first contact plate of the guide member 6B. The inner side surface 64a of the portion 64 is brought into contact with the vicinity of the corner portion 22c of the first side surface 22a of the wall portion 22 of the bottom plate portion 2, and the inner side surface 652a of the second flat plate portion 652 of the second contact plate portion 65 is contacted with the bottom plate portion. The second wall 22 is brought into contact with the second side surface 22b (guide member contact step).
The first abutting plate portion 64 and the second abutting plate portion 65 are in contact with the wall portion 22 of the bottom plate portion 2, respectively, so that the side wall portion 3 is stably placed immediately above the wall portion 22 of the bottom plate portion 2. The

Subsequently, the side wall portion 3 is lowered onto the wall portion 22 of the bottom plate portion 2 (bottom plate portion lowering step (precast member lowering step)).
The first contact plate portion 64 of the guide member 6B is brought into contact with the first side surface 22a of the wall portion 22 of the bottom plate portion 2, and the inner surface of the second flat plate portion 652 of the second contact plate portion 65 is set. Assuming that 652a is in contact with the second side surface 22b of the wall portion 22 of the bottom slab portion 2, the side wall portion 3 is lowered onto the wall portion 22 of the bottom slab portion 2, and the lower side portions 31, 31,. Are inserted into the sleeves 24 of the bottom plate portion 2.

Subsequently, as shown in FIG. 11, the first contact plate portion 64 of the guide member 6B is fixed to the bottom plate portion 2 (first contact portion fixing step).
While fixing the lower part side of the 1st contact plate part 64 of the guide member 6B to the 1st side 22a of the wall part 22 of the bottom plate part 2 with the 2nd fixing tool 67, the 2nd contact plate part 65 shown in FIG. Remove from the first contact plate portion 64.
Thereby, the bottom plate portion 2 and the side wall portion 3 are temporarily fixed by the guide member 6B.

Subsequently, the grout material 5 is filled between the sleeves 24, 24... Of the bottom plate portion 2 and between the bottom plate portion 2 and the side wall portion 3 (grouting step).
When the grout material 5 is cured, the bottom plate portion 2 and the side wall portion 3 are joined.

Subsequently, after the grout material 5 is cured, the first contact plate portion 64 of the guide member 6B is removed from the side wall portion 3 and the bottom plate portion 2 (first contact portion removing step).
While removing the 1st fixing tool 66 from the side wall part 3, the 2nd fixing tool 67 is removed from the bottom plate part 2, and the 1st contact plate part 64 is removed from the side wall part 3 and the bottom plate part 2. FIG.

  In order to join the top plate portion 4 to the side wall portion 3, the first contact plate portion 64 of the guide member 6 </ b> B is attached to the outer surface 42 a of the wall portion 42 of the top plate portion 4 in the width direction, and the top plate portion The second abutment plate portion 65 is brought into contact with the first abutment plate portion 64 by the third fixture 68 so that the second abutment plate portion 65 of the guide member 6B abuts on the end surface in the length direction of the fourth wall portion 42. Install. In this state, the top plate portion 4 is lifted so that the first contact plate portion 64 of the guide member is brought into contact with the first side surface 3a of the side wall portion 3, and the second contact plate portion 65 is set to the second side surface 3b of the side wall portion. The top plate part 4 that is lifted is brought down onto the side wall part 3. Thereby, the top plate part 4 can also be arrange | positioned with respect to the side wall part 3 in a normal position.

In the joint structure of precast concrete members according to the second embodiment, when the suspended side wall 3 is lowered onto the bottom slab 2, the guide member 6 </ b> B intersects the first side 22 a and the second side 22 a of the wall 22 of the bottom slab 2. Since it will be in the state contact | abutted with the side surface 22b, the position of the side wall part 3 will be stabilized, and the side wall part 3 can be arrange | positioned in the normal position with respect to the wall part 22 of the bottom plate part 2. FIG.
Further, the first abutting plate portion 64 can be fixed to the wall portion 22 of the bottom plate portion 2 and the second abutting plate portion 65 can be configured not to be fixed to the wall portion 22 of the bottom plate portion 2. Even when the two abutting plate portions 65 interfere with other members, the guide member 6B can be provided.

As mentioned above, although embodiment of the joining structure of the precast concrete member by this invention was described, this invention is not limited to said embodiment, In the range which does not deviate from the meaning, it can change suitably.
For example, in the above embodiment, the guide members 6A and 6B are used when the side wall portion 3 of the box culvert 1 is joined to the bottom plate portion 2. However, in a structure other than the box culvert, a precast concrete member is to be joined. The guide members 6A and 6B may be used when joining to the concrete member.
Further, in the above embodiment, the side wall portion 3 of the precast concrete member is joined to the bottom plate portion 2 made of precast concrete, but the side wall portion 3 of the precast concrete member is joined to the bottom plate portion 2 made of on-site concrete. May be joined.

In the above embodiment, the guide members 6A and 6B are used as jigs for temporarily fixing the bottom plate portion 2 and the side wall portion 3 in the grout filling step, but the guide members 6A and 6B are not used. Other jigs for temporarily fixing the bottom plate portion 2 and the side wall portion 3 may be used.
Moreover, in said embodiment, although the lower side 31,31 ... of the reinforcing bar which protruded from the lower end surface of the concrete part 32 of the side wall part 3 is inserted in the sleeves 24,24 ... formed in the bottom plate part 2, A reinforcing bar protruding from the bottom plate portion 2 may be inserted into a sleeve formed on the side wall portion 3.
Moreover, in said embodiment, although the upper side 33,33 ... of the reinforcing bar protruded from the upper end surface of the concrete part 32 of the side wall part 3 is inserted in the sleeves 44,44 ... formed in the top plate part 4. The reinforcing bars protruding from the top plate portion 4 may be inserted into a sleeve formed on the side wall portion 3.

In the first embodiment, the guide member 6A is provided on the side surface 3a on the outer side in the width direction of the side wall portion 3, and the guide member 6A is in contact with the side surface 22a on the outer side in the width direction of the wall portion 22 of the bottom plate portion 2. The guide member 6 </ b> A is provided on a side surface of the side wall 3 other than the outer side in the width direction, and the guide member 6 </ b> A comes into contact with a side surface other than the outer side in the width direction of the wall portion 22 of the bottom plate part 2. It may be configured as follows.
In the second embodiment, the second contact plate portion 65 is fixed to the side wall portion 3 via the first contact plate portion 64 and is configured to be detachable from the first contact plate portion 64. However, it may be configured to be detachable directly from the side wall 3.

1 Box culvert 2 Bottom plate (concrete member)
3 Side wall (precast concrete member)
3a Side surface 4 Top plate portion 5 Grout material 6A, 6B Guide member 22 Wall portion 22a Side surface, first side surface 22b Second side surface 22c Corner portion 64 First contact plate portion (first contact portion)
65 Second contact plate (second contact)

Claims (7)

In the precast concrete member joining method for joining the precast concrete member to the concrete member,
A first guide member fixing step of fixing a guide member protruding to the concrete member side on a side surface of the precast concrete member;
A guide member abutting step in which the precast concrete member is lifted to face the concrete member, and the guide member abuts against a side surface of the concrete member;
A precast concrete member lowering step of lowering the precast concrete member on the concrete member in a state where the guide member is in contact with a side surface of the concrete member. A second guide member fixing step of fixing the guide member to a side surface of the concrete member after the precast concrete member lowering step;
A grout filling step of filling a grout material between the precast concrete member and the concrete member after the second guide member fixing step;
The method for joining precast concrete members according to claim 1, further comprising a guide member removing step of removing the guide members from the precast concrete member and the concrete member after the grout material filling step. In the guide member contact step, the guide member is brought into contact with each of the first side surface of the concrete member and the second side surface disposed in a plane intersecting the first side surface,
3. The precast concrete member lowering step, wherein the precast concrete member is lowered onto the concrete member in a state where the guide member is in contact with the first side surface and the second side surface. The method for joining precast concrete members as described. The guide member has a first contact portion and a second contact portion,
In the guide member abutting step and the precast concrete member lowering step, the first abutting portion is abutted on the first side surface, the second abutting portion is abutted on the second side surface,
A first contact portion fixing step of fixing the first contact portion to the concrete member after the precast concrete member lowering step, and removing the second contact portion from the precast concrete member;
A grout filling step of filling a grout material between the precast concrete member and the concrete member after the first contact portion fixing step;
4. The precast concrete according to claim 3, further comprising a first contact portion removing step of removing the first contact portion from the precast concrete member and the concrete member after the grout material filling step. Member joining method. In a guide member for joining a precast concrete member to a concrete member,
The front end is fixed to the side of the precast concrete member so that the end projects from the end of the precast concrete member toward the concrete member,
A guide member configured to be able to contact a side surface of the concrete member when the suspended precast concrete member is opposed to the concrete member in a separated state.   The guide member is disposed in a plane intersecting the first side surface and the first side surface of the concrete member when the suspended precast concrete member is opposed to the concrete member in a separated state. The guide member according to claim 5, wherein the guide member is configured to be able to contact each of the side surfaces. The guide member has a first contact portion that can contact the first side surface, and a second contact portion that can contact the second side surface,
The guide member according to claim 6, wherein the second contact portion is configured to be detachable from the first contact portion.

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