JP6893949B2 - Connection structure and connection method between members - Google Patents

Description

The present invention relates to a connecting structure and a connecting method between members for connecting structural members, for example, a unitized precast concrete (hereinafter referred to as “PCa”) member, a partially precast half PCa member, or a tunnel cover. Large members such as construction segments can be easily and safely connected to each other.

Connections between unitized PCa members or half PCa members, or large members such as tunnel lining segments are usually performed using bolts and nuts.

For example, FIGS. 19 (a) and 19 (b) show a connection structure between members in which unitized PCa members 30 and 31 are connected by using a plurality of bolts and nuts 32. To explain, the bolt boxes 34 and 34 are formed at positions slightly inside the connecting end faces 33 of the PCa members 30 and 31 connected to each other.

The bolt boxes 34 are symmetrically formed on both sides of the connecting surface 33 between the PCa members 30 and 31, and a plurality of pairs are formed in the continuous direction of the connecting surface 33. Further, a plurality of bolt through holes 35 are formed in communication with the side portions 34a and 34a on the connecting surface 33 side of each bolt box 34.

Then, the bolts and nuts 32 are fastened to the bolt through holes 35 and 35 on both sides, so that the unitized PCa members 30 and 31 are connected to each other.

Further, FIGS. 20 (a) and 20 (b) are inventions of a joint structure of steel segments shown as a conventional example in Patent Document 1, and connecting surfaces of both segments 36 and 36 to be connected as shown. In 36a, the joint plates 37, 37 of both segments 36, 36 are connected by a connecting bolt 38 penetrating the joint plates 37, 37.

Further, FIGS. 21 (a) and 21 (b) describe the invention of the joint structure of the segment used at the time of connecting the segments 39 and 39 constituting the segment ring for the primary lining of the shield tunnel disclosed in Patent Document 1. It is illustrated.

To explain, each segment 39, 39 constituting the primary lining segment ring is composed of side plates mainly of the joint plate 40, which is the connecting surface 39a between the segments 39, 39 in the segment ring, and other side surfaces. ing.

In each of the segments 39 and 39, a second joint plate 41 parallel to the joint plate 40 is provided at a position inside the segment at a predetermined distance from the joint plate 40 which is the connecting surface 39a, and the second joint plate 41 and the joint are provided. The space between the plate 40 and the plate 40 is a reinforcing section 42 provided with reinforcing means.

The reinforcing section 42 is configured so that the connecting bolt 43 can penetrate when the joint plates 40, 40 of each segment 39, 39 are brought into contact with each other to face each other. , Each segment 39, 39 is tightened by a connecting bolt 43 penetrating both reinforcing sections 42, 42 formed at the end on the connecting surface 39a side.

Japanese Unexamined Patent Publication No. 10-18785 Japanese Unexamined Patent Publication No. 2012-62664

However, in the joint structure of the steel segment shown in FIGS. 20 (a) and 20 (b), bending and tensile stress are transmitted at the joint portion of the segment through the joint plates 37 and 37, so that the bending is performed. If the rigidity is low, stress may be concentrated on the joint plates 37, 37 centering on the connecting bolt holes, and the joint plates 37, 37 may be easily deformed as shown in Fig. 17 (b), causing water leakage. It was.

Further, in the intermember connection structures shown in FIGS. 19 (a) and 19 (b) and 21 (a) and 21 (b), bolts are used as the members to be connected become larger and heavier. -The nut 32 has also become larger, heavier, and longer, and the bolt box 34 has also become larger accordingly. Especially when connecting work in a high position or in a narrow space, a tightening tool that tightens the bolt / nut 32 (not shown). There was a problem that it became troublesome to handle.

In addition, there is a risk of dropping the bolts and nuts 32 while working at a high position, which requires extra effort not only for recovery, but also for safety issues, so it is necessary to take some measures. there were.

The present invention has been made to solve the above problems, and in particular, contributes to labor saving and safety when connecting large members such as PCa members and segments, and connects large members such as large PCa members to each other. It is an object of the present invention to provide a connecting structure and a connecting method between members so that they can be easily and safely connected.

In the present invention, there is a connecting plate arranged at each connecting end of the first structural member and the second structural member to be connected, and between the connecting plates in a continuous direction of the first structural member and the second structural member. It is a connecting structure between members that are arranged and include a connecting member that connects the first structural member and the second structural member, and the connecting member is the first before being arranged between the connecting plates. It is temporarily attached to the connecting member accommodating portion provided in 1 or the second structural member, and is pulled out from the connecting member accommodating portion when the first structural member and the second structural member are connected to the first structural member. It is characterized in that it is bridged between the connecting plates of the second structural member and the second structural member.

Further, a plurality of connecting plates arranged apart from each other in the continuous direction of the first structural member and the second structural member at the connecting ends of the first structural member and the second structural member to be connected, and the said. A connecting member and a compressive force that are arranged between the connecting plates in a continuous direction of the first structural member and the second structural member and transmit a tensile force and a compressive force acting between the first structural member and the second structural member. It is a connecting structure between members provided with each transmission portion, and the connecting member is temporarily placed in a connecting member accommodating portion provided in the first or second structural member before being arranged between the connecting plates. Attached, it is pulled out from the connecting member accommodating portion at the time of connecting the first structural member and the second structural member, and is bridged between the connecting plate of the first structural member and the second structural member. It is characterized by being.

The compressive force transmitting portion can be formed of a steel shell portion composed of the connecting plate and side plates arranged on both sides between the connecting plates and a solidified body or a supplementary steel member arranged in the steel shell portion. , A solidifying material such as mortar or concrete can be used for the solidified body, and a plate or shaped steel can be used for the auxiliary steel member.

When the steel shell is filled with a solidifying material such as mortar to form a solidified body, the steel shell and the solidified body are integrated by projecting a gibber such as a stud inside the connecting plate and the side plate. The rigidity of the connecting portion can be significantly increased. Further, as the connecting member, a connecting bolt, a rod or the like having male threaded portions at both ends can be used.

Further, if the space between the side plates of the structural member is filled with a solidifying material such as concrete over the entire length, the structural member becomes a structural member of a steel / concrete structure or a steel shell concrete structure, and the solidifying material is filled between the side plates. If not, the connecting portion becomes a structural member of the steel structure reinforced by the compressive force transmitting portion of the steel shell concrete structure.

In the present invention, at each connecting end of the first structural member and the second structural member to be connected, between the connecting plate arranged in the continuous direction of the first structural member and the second structural member, and the connecting plate. A connecting member and a compressive force transmitting portion that are arranged in the continuous direction of the first structural member and the second structural member and transmit the tensile force and the compressive force acting between the first structural member and the second structural member. It is an invention of the connecting structure between the members provided with each, and in particular, before the connecting member is arranged between the connecting plates, in the connecting member accommodating portion provided on one of the first or second structural members. Temporarily attached, it is pulled out from the connecting rod accommodating portion at the time of connecting the first structural member and the second structural member, and is erected between the connecting plate between the first structural member and the second structural member. In addition to eliminating the risk of the connecting member falling, labor saving is also achieved, and the first structural member and the second structural member are provided with safety compared to the conventional construction method. It is possible to connect between them extremely efficiently and easily, and it is possible to save labor and ensure safety in the connection work, and a large structure such as a PCa member, a half PCa member, or a segment for tunnel lining. Suitable for connecting members.

Further, since the first structural member and the second structural member are provided with a connecting member for transmitting the tensile force acting between the structural members and a compressive force transmitting portion for transmitting the compressive force, the connection between the structural members is provided. Deformation due to the bending force of the part can be reduced.

The structure of the connecting portion between the structural members is illustrated, (a) is a plan view, and (b) is a cross-sectional view taken along the line 1 (a). The structure of the connecting portion between the structural members is illustrated, (a) is a plan view, and (b) is a cross-sectional view taken along the line in FIG. 2 (a). The structure of the connecting portion between the structural members is illustrated, (a) is a plan view, and (b) is a cross-sectional view taken along the line Ha-ha in FIG. 3 (a). The structure of the connecting portion between the structural members is illustrated, (a) is a plan view, and (b) is a cross-sectional view taken along the line Nini in (a). It is a top view which shows the structure of the connection part between structural members. (a) to (c) are explanatory views showing the work procedure of connecting the structural members to form the structure of the connecting portion of the structural members shown in FIG. The structure of the connecting portion between the structural members is illustrated, (a) is a plan view, and (b) is a cross-sectional view taken along the line in (a). It is a top view which shows the structure of the connection part between structural members. The structure of the connecting portion between the structural members is illustrated, (a) is a plan view, and (b) is a cross-sectional view taken along the line in (a). The work of connecting the structural members to form the structure of the connecting portion between the structural members shown in FIG. 7 is also a plan view showing the procedure. The structure of the connecting portion between structural members is illustrated, (a) is a plan view, and (b) is a cross-sectional view taken along the line in (a). The structure of the connecting portion between structural members is illustrated, (a) is a plan view, and (b) is a cross-sectional view taken along the line in (a). The structure of the connecting portion between the structural members is illustrated, (a) is the structure of the connecting portion between the structural members connected by one connecting bolt, and (b) is connected by two connecting bolts. It is a top view which shows the structure of the connecting part between structural members. It is a top view which shows the structure of the connection part between structural members. (a) to (c) are explanatory views showing a work procedure for connecting structural members to form a structure of a connecting portion between structural members shown in FIG. 11, until the connecting portions of the structural members are opposed to each other. The procedure of is illustrated. (a) and (b) are explanatory views showing the work procedure of connecting the structural members to form the structure of the connecting portion between the structural members shown in FIG. 11, in which the connecting portions of the structural members are butted against each other. The procedure from tightening the connecting bolt to completing the connection between the structural members is illustrated. The structure of the connecting portion between structural members is illustrated, (a) is a plan view, and (b) is a cross-sectional view taken along the line in (a). (a) and (b) are explanatory views showing the work procedure which connects the structural members to form the structure of the connecting portion between the structural members shown in FIG. The connection portion between the conventional PCa members is illustrated, (a) is a plan view, and (b) is a sectional view. The connection portion between the steel segments is shown, (a) is a vertical cross-sectional view, and (b) is a vertical cross-sectional view after deformation. The connection portion between the steel segments is illustrated, (a) is a vertical sectional view, and (b) is a plan view.

[Embodiment 1]
1 (a) and 1 (b) show an embodiment of the present invention, in which a first structural member (hereinafter, "structural member") 1 and a second structural member (hereinafter, "structural member") 2 are shown. , The structural member 1 and the structural member 2 are arranged adjacent to each other in the continuous direction.

Further, the structural members 1 and 2 are connected by a pair of connecting plates 3, 3 and one or a plurality of connecting members (hereinafter, "connecting bolts") 4 and a plurality of fixing members (hereinafter, "fixing nuts") 5, 5. There is.

The structural members 1 and 2 are provided with a pair of side plates 6 and 6 arranged in parallel in the continuous direction of the structural members 1 and 2, respectively, and the end faces of the side plates 6 and 6 of the structural members 1 and 2 are structural members. They are butted against each other in one or two continuous directions.

The side plates 6 and 6 of the structural members 1 and 2 are the main structural members that serve as the main girders of the structural members 1 and 2, respectively, or, for example, the structural members 1.2 as shown in FIG. 5 described later. A member, for example, a plate, which is arranged very short in the continuous direction of the structural members 1 and 2 at each connecting end portion and is a part of the connecting metal fitting 10 connecting the structural members 1 and 2 may be used.

The connecting plates 3 and 3 are separated from each other at positions retracted by a certain length from the connecting surface 7 between the side plates 6 and 6 of the structural members 1 and 2, and are parallel to the direction orthogonal to the continuous direction of the structural members 1 and 2. The structural members 1 and 2 are arranged so as to face each other in the continuous direction, and both edge ends are integrally welded to the inner side surfaces of the side plates 6 and 6.

A connecting bolt 4 that mainly transmits a tensile force (arrow) acting on the connecting portion between the structural members 1 and 2 is arranged between the connecting plates 3 and 3. The connecting bolts 4 are arranged between the opposing connecting plates 3 and 3 in parallel with the continuous direction of the structural members 1 and 2.

Further, the connecting bolt 4 has male threaded portions 4a and 4a at both ends, and the male threaded portions 4a and 4a penetrate the connecting holes 3a and 3a formed in the connecting plates 3 and 3, respectively, and the connecting plates 3 and 3 have male threaded portions 4a and 4a. It is fixed by fixing nuts 5 and 5 screwed into the male threaded portions 4a and 4a on the back side.

The connecting bolt 4 is shown in FIGS. 2 (a) and 2 (b) according to the scale of the structural members 1 and 2 and the magnitude of the axial force acting on the connecting portion between the structural members 1 and 2. In addition, a plurality of structural members 1 and 2 may be arranged vertically and horizontally in the continuous direction.

Further, the connecting portion between the structural members 1 and 2 is provided with a compressive force transmitting portion 8 for transmitting the compressive force acting on the connecting portion between the structural members 1 and 2. The compressive force transmitting portion 8 is filled with a solidifying material 8b such as concrete or mortar in a steel shell portion 8a formed in a rectangular frame shape from the side plates 6 and 6 of both the structural members 1 and 2 and the connecting plates 3 and 3. It is formed by

The structural members 1 and 2 are continuously arranged in the direction in which the axial force (tensile and compressive force) acts. Further, if a gibber such as a stud is projected inside the connecting plate 3 and the side plate 6 forming the steel shell portion 8a, the rigidity of the connecting portion is increased by completely integrating the steel shell portion 8a and the solidifying material 8b. Can be significantly enhanced.

Further, the structural members 1 and 2 may be manufactured in a factory or the like, and in that case, as shown in FIGS. 3A and 3B, a groove composed of the side plates 6 and 6 and the connecting plate 3 is formed. By filling the frame-shaped steel shell portion 8a with the solidifying material 8b, the compressive force transmitting portion 8 is formed for each of the structural members 1 and 2.

Further, a through hole 8c through which the connecting bolt 4 penetrates is formed in the solidified solidifying material 8b so as to communicate with the connecting hole 3a of the connecting plate 3. FIGS. 4 (a) and 4 (b) show an example in which a plurality of connecting bolts 4 are arranged in parallel and in a plurality of stages in the continuous direction of the structural members 1 and 2 between the connecting plates 3 and 3.

If the side plates 6 and 6 of the structural members 1 and 2 are filled with a solidifying material 9 such as concrete over the entire length, the structural members 1 and 2 become structural members of a steel / concrete structure or a steel shell concrete structure. If the solidifying material 9 is not filled between the side plates 6 and 6, the structural members 1 and 2 are structural members having a steel structure in which the connecting portion is reinforced by the compressive force transmitting portion 8.

In FIG. 5, the side plates 6 and 6 are arranged parallel to the connecting ends of the structural members 1 and 2 in the continuous direction of the structural members 1 and 2 with a very short length, and are concavely opened on the connecting surface 7 side. The case where it is a side plate of the connecting metal fitting 10 is shown, and it is suitable for connecting PCa segments to each other.

The connecting metal fitting 10 is embedded in the concrete 9 at each connecting end of the structural members 1 and 2, and is fixed to the anchor member (not shown) in the concrete 9. Further, the connecting metal fittings 10 and 10 may be filled with a solidifying material 10a made of concrete or the like.

In such a configuration, the bending, tensioning, compressing and shearing forces acting on the connecting portions between the structural members 1 and 2 are transmitted via the connecting bolt 4 and the compressive force transmitting portion 8, and in particular, the structural members 1 and 2. By arranging the compressive force transmitting portion 8 at the connecting portion between them, it is possible to reduce deformation due to bending force of the connecting portion between the structural members 1 and 2.

Further, the connecting bolt 4 and the compressive force transmitting portion 8 are formed based on a design load (bending, tensioning, compressing and shearing force) acting on the connecting portion between the structural members 1 and 2.

Next, a method of connecting the structural members 1 and 2 using the connecting bolt 4 and the fixing nut 5 will be described based on FIGS. 6A to 6C.

(1) First, the connecting bolt 4 is temporarily attached to the structural member 2 (see FIG. 6A). In this case, the connecting bolt 4 is a temporary jig that penetrates the connecting hole 3a of the connecting plate 3 and is horizontally arranged behind the connecting surface 7 and is attached to the connecting hole 3a of the connecting plate 3 and a position in front of the connecting hole 3a. Temporarily attach while being held in at least two places in 11. In this case, the temporary jig 11 may have a structure that allows the connecting bolt 4 to be easily separated by an impact or the like and held horizontally without falling, and is easily formed of steel, reinforcing bars, hard plastic, or the like. It may be the one that has been done.

(2) Next, the end faces of the side plates 6 and 6 of the structural members 1 and 2 are butted against each other in the continuous direction of the structural members 1 and 2, and the connecting holes 3a and 3a of both connecting plates 3 and 3 are aligned with each other. ..

(3) Next, the connecting bolt 4 is slid toward the structural member 1 side and bridged between the connecting holes 3a and 3a of the connecting plates 3 and 3. Then, the fixing nuts 5 and 5 are tightened to the male threaded portions 4a and 4a that penetrate the connecting holes 3a and 3a and project to the back surface side thereof (FIG. 6 (b)). It is also possible to tension the connecting bolt 4 by tightening the fixing nut 5 deeply to introduce prestress into the connecting portion between the structural members 1 and 2.

(4) Then, a solidifying material 8b such as mortar is filled in the steel shell portion 8a composed of the side plates 6 and 6 of both the structural members 1 and 2 and the connecting plates 3 and 3 to form the compressive force transmitting portion 8 ( FIG. 6 (c)).

If it is difficult to tighten the fixing nut 5 because the fixing nut 5 on the structural member 1 side is embedded in the concrete 9 as shown in FIG. 14, the fixing nut 5 on the structural member 1 side is used. Is attached to the connecting plate 3 in a fixed state. When the connection between the structural members 1 and 2 is completed, a solidifying material 9 such as concrete is filled between the side plates 6 and 6 of the structural members 1 and 2 as needed.

[Embodiment 2]
7 (a) and 7 (b) show other embodiments of the present invention, and in the embodiments of FIGS. 1 (a) and 1 (b), the connecting ends of the structural members 1 and 2, respectively. Joint plates 12 and 12 are arranged in each.

The joint plates 12 and 12 are arranged between the tips of the side plates 6 and 6 of the structural members 1 and 2 at right angles to the continuous direction of the structural members 1 and 2 and parallel to the connecting plates 3 and 3. Further, the joint plates 12 and 12 are integrally welded to the tip portions of the side plates 6 and 6, respectively, and are in close contact with each other.

Further, at each connecting end portion of the structural members 1 and 2, a compressive force transmitting portion 8 for transmitting a compressive force acting on the connecting portion between the structural members 1 and 2 is provided. The compressive force transmitting portion 8 is a solidifying material 8b such as concrete or mortar in a steel shell portion 8a formed in a rectangular frame shape from the structural members 1, 2 side plates 6, 6 and the connecting plates 3, 3 and the joint plate 12, respectively. Is formed by filling.

In addition, one or a plurality of auxiliary steel members 13 made of a plate, a shaped steel, or the like may be arranged in the steel shell portion 8a, and examples of the arrangement of the auxiliary steel members 13 are as shown in FIG. , The connecting plate 3 and the joint plate 12 may be arranged in parallel with the continuous direction of the structural members 1 and 2. Further, FIGS. 9 (a) and 9 (b) show an example in which a plurality of connecting bolts 4 are arranged in a plurality of rows and in a plurality of stages between the connecting plates 3 and 3.

10 (a) and 10 (b) show a method of connecting the structural members 1 and 2 using the connecting bolt 4 and the fixing nut 5. To explain,

(1) First, the connecting bolt 4 is temporarily attached to the structural member 2 in advance (see FIG. 10 (a)). In this case, as shown in the figure, the connecting bolt 4 is penetrated through the connecting hole 3a of the connecting plate 3 and horizontally arranged behind the joint plate 12, and the through hole 12a of the joint plate 12 and the connecting hole 3 of the connecting plate 3 are connected. Temporarily attach it to the state where it is held horizontally at at least two places in 3a (see Fig. 10 (a)).

(2) Next, the joint plates 12 and 12 of the structural members 1 and 2 are brought into close contact with each other, and the through holes 12a and 12a of both are aligned with each other.

(3) Next, the connecting bolt 4 is slid toward the structural member 1 side and bridged between the connecting holes 3a and 3a of the connecting plates 3 and 3 of both the structural members 1 and 2. Then, the fixing nuts 5 and 5 are tightened to the male threaded portions 4a and 4a that penetrate the connecting holes 3a and 3a and project to the back surface side thereof (FIG. 10 (b)). By tightening the fixing nut 5 deeply, the connecting bolt 4 can be tightened to introduce a predetermined amount of prestress into the connecting portion between the structural members 1 and 2.

(4) Next, the structural members 1 and 2 are filled with a solidifying material 8b such as mortar in the steel shell portion 8a composed of the side plates 6 and 6 of the structural members 1 and 2, the connecting plate 3 and the joint plate 12. Compressive force transmitting portions 8 and 8 are formed at the connecting ends of the above (Fig. 10 (b)).

[Embodiment 3]
11 and 12 show other embodiments of the present invention. Among them, in the embodiments of FIGS. 11 (a) and 11 (b), the connecting bolts 4 and 4 are in the continuous direction of the structural members 1 and 2. The upper connecting bolts 4 and 4 are arranged between the connecting plates 3 and 3, and the lower connecting bolts 4 and 4 are arranged between the joint plates 12 and 12, respectively. Further, in the embodiments of FIGS. 12 (a) and 12 (b), the joint plates 12 and 12 are further formed at a height (height) lower than that of the connecting plate 3 and at a height of about 1/2.

[Embodiment 4]
13 to 16 show another embodiment of the present invention, and in the embodiments of FIGS. 7A and 7B, a connection for temporarily attaching the connection bolt 4 to the structural member 2. It is provided with a member storage unit (hereinafter referred to as “bolt storage unit”) 14 and a bolt box 15 for performing bolt fastening work such as tightening a fixing nut 5 to a connecting bolt 4.

The bolt box 15 is formed in a rectangular frame shape from the connecting plate 3 and the back plate 16 and the side plates 6 and 6 arranged at predetermined intervals behind the connecting plate 3 on the back side of the connecting plate 3. There is.

The back plate 16 is integrally welded to the side plates 6 and 6, and a bolt insertion hole into which the end portion (including the male screw portion 4a) of the connecting bolt 4 is inserted at a position facing the connecting hole 3a of the connecting plate 3. 16a is formed.

The bolt insertion hole 16a is formed on the same axis as the connecting hole 3a of the connecting plate 3 and the through hole 12a of the joint plate 12. Further, in the bolt insertion hole 16a, when the connecting bolt 4 penetrates the inside of the bolt box 15 from the through hole 12a and is inserted into the bolt insertion hole 16a, almost the entire length of the connecting bolt 4 is the through hole 12a and the bolt insertion hole. It is formed to a depth that fits between 16a. That is, the through hole 12a to the bolt insertion hole 16a is a bolt storage portion 14 to which the connecting bolt 4 is temporarily attached.

The bolt storage portion 14 and the bolt box 15 may be formed in the structural member 1. Further, if a part or the whole of the bolt insertion hole 16a is formed in a screw hole into which the male screw portion 4a of the connecting bolt 4 can be screwed, the connecting bolt 4 temporarily attached in the bolt accommodating portion 14 is a structural member. It is possible to prevent the bolt from accidentally slipping out and falling due to an impact or the like during transportation of 2.

Further, a compressive force transmitting unit 8 for transmitting a compressive force acting between the structural members 1 and 2 is arranged at each connecting end of the structural members 1 and 2. The compressive force transmitting portion 8 is filled with a solidifying material 8b such as concrete or mortar in a steel shell portion 8a formed in a rectangular frame shape from the side plates 6 and 6 of the structural members 1 and 2, the connecting plate 3 and the joint plate 12. It is formed by being done.

Further, the solidified material 8b is formed with a through hole 8c that communicates with the connecting hole 3a of the connecting plate 3 and the through hole 12a of the joint plate 12. Further, a fixing nut 5 is attached to the back surface of the connecting plate 3 of the structural member 1 in a state of communicating with the connecting hole 3a.

Then, at the time of connecting the structural members 1 and 2, the connecting bolt 4 is pulled out from the bolt accommodating portion 14, is bridged between the connecting holes 3a and 3a of the connecting plates 3 and 3 of both the structural members 1 and 2, and is connected. The fixing nuts 5 and 5 are screwed into the male threaded portions 4a and 4a at both ends protruding from the holes 3a and 3a toward the back side of the connecting plates 3 and 3, so that the structural members 1 and 2 are connected. ..

In such a configuration, a method of connecting the structural member 1 and the structural member 2 with a connecting bolt 4 and a fixing nut 5 will be described next (FIGS. 15 (a) to (c), FIGS. 16 (a), 16 (b). )reference).

(1) First, the connecting bolt 4 is inserted into the bolt storage portion 14 of the structural member 2 and temporarily attached (see FIGS. 15 (a) and 15 (b)). At that time, by screwing the male screw portion 4a of the connecting bolt 4 into the screw hole (not shown) in the bolt insertion hole 16a, the connecting bolt 4 is erroneously screwed due to an impact when the structural member 2 is moved or the like. It is possible to prevent it from slipping out and falling.

Further, as shown in the drawing, if the male screw portion 4a is formed at the end of the connecting bolt 4 on the structural member 2 side to be longer than the depth of the bolt insertion hole 16a, the fixing nut 5 on the structural member 2 side is formed on the male screw portion 4a. The connecting bolt 4 can be temporarily attached to the inside of the bolt storage portion 14 (see FIG. 15 (c)), and the fixing nut 5 can be prevented from falling. The connecting bolts 4 may be temporarily attached either at the time of shipment of the structural members 1 and 2 or after the structural members 2 are brought to the site.

(2) Next, the joint plates 12 and 12 of both the structural members 1 and 2 are brought into contact with each other, and the through holes 12a and 12a of both are aligned with each other (see FIG. 16 (a)).

(3) Next, in the bolt box 15, the connecting bolt 4 is pulled out from the bolt storage portion 14 and slid toward the structural member 1, thereby penetrating the through hole 12a of the joint plate 12 of the structural member 1 and the compressive force transmitting portion 8. It penetrates through the hole 8c and the connecting hole 3a of the connecting plate 3 and bridges between the connecting holes 3a and 3a of the connecting plates 3 and 3 of the structural members 1 and 2 (see FIG. 16 (b)).

(4) Next, the male screw portion 4a at the tip of the structural member 1 side is screwed into the fixing nut 5, and the end portion of the connecting bolt 4 on the structural member 1 side is fixed to the connecting plate 3 on the structural member 1 side.

(5) Next, the fixing nut 5 screwed into the male screw portion 4a of the connecting bolt 4 protruding into the bolt box 15 of the structural member 2 is tightened (FIG. 16 (b)). At that time, prestress can be introduced into the connecting portion between the structural members 1 and 2 by strongly tightening the fixing nut 5 and tightening the connecting bolt 4.

[Embodiment 5]
17 and 18 illustrate another embodiment of the present invention, in which structural members 1 and 2 connected to each other are arranged adjacent to each other in the continuous direction of the structural members 1 and 2. ..

Further, the structural members 1 and 2 are connected to each other by a pair of connecting plates 3, 3 and one or a plurality of connecting bolts 4, and a plurality of fixing nuts 5, 5.

The structural members 1 and 2 each include a pair of side plates 6 and 6 arranged in parallel in the continuous direction of the structural members 1 and 2, and a side plate 6 and a side plate 6 at the tip of one side plate 6 of the structural members 1 and 2, respectively. It is provided with vertical ribs 6a having the same height (combination) and the same thickness and extending in the direction of the tip of the side plate 6.

The connecting plate 3 is arranged at the tip between the side plates 6 and 6 parallel to the direction orthogonal to the continuous direction of the structural members 1 and 2, and is arranged so as to face each other in the continuous direction of the structural members 1 and 2. .. Then, it is integrally welded to the tip portions of the side plates 6 and 6.

Further, the vertical ribs 6b are arranged at substantially intermediate positions of the connecting plate 3 in parallel with the vertical ribs 6a and separated from the vertical ribs 6a. The vertical rib 6b is formed to have the same height, the same thickness, and the same length as the vertical rib 6a.

Further, a plurality of compressive force transmitting portions 8 are formed at the connecting portions between the structural members 1 and 2. The compressive force transmitting portion 8 is formed by filling a solidifying material 8b such as mortar or concrete in a rectangular frame-shaped steel shell portion 8a composed of a connecting plate 3, vertical ribs 6a, and vertical ribs 6b. The steel shell portions 8a are formed in parallel in a direction orthogonal to the continuous direction of the structural members 1 and 2, and each steel shell portion 8a is filled with the solidifying material 8b.

The connecting bolt 4 penetrates the compressive force transmitting portion 8 between the opposing connecting plates 3 and 3 and is arranged parallel to the continuous direction of the structural members 1 and 2, and the male screw portions 4a and 4a at both ends are the connecting plates 3 and 3. The fixing nuts 5 and 5 penetrate the connecting holes 3a and 3a, respectively, and are screwed into the male threaded portions 4a and 4a on the back surface side of the connecting plates 3 and 3, respectively.

In such a configuration, a method of connecting the structural members 1 and 2 with the connecting bolt 4 and the fixing nut 5 will be described next (see FIGS. 18A and 18B).

(1) First, the connecting bolt 4 is temporarily attached to the structural member 2 side (see FIG. 18 (a)). In this case, as shown in the figure, the connecting bolt 4 is arranged horizontally between the vertical ribs 6a and 6b so as to penetrate the connecting hole 3a of the connecting plate 3, and the connecting hole 3a and the vertical rib 6a of the connecting plate 3 are arranged horizontally. Temporarily attach the temporary attachment jig 11 installed within 6b so that it is held horizontally at at least two places (see Fig. 18 (a)).

(2) Next, the vertical ribs 6a of the structural members 1 and 2 and the end faces of the side plates 6 are abutted against each other, and the end faces of the vertical ribs 6b and the side surfaces of the connecting plate 3 are abutted against each other, and both connecting holes 3a Match, 3a with each other.

(3) Next, the connecting bolt 4 is slid toward the structural member 1 side, and the connecting bolt 4 is bridged between the connecting holes 3a and 3a of the connecting plates 3 and 3 of the structural members 1 and 2. Then, the fixing nuts 5 and 5 are tightened to the male threaded portions 4a and 4a that penetrate the connecting holes 3a and 3a and project to the back surface side thereof (FIG. 18 (b)).

It is also possible to tension the connecting bolt 4 by tightening the fixing nut 5 deeply to introduce prestress into the connecting portion between the structural members 1 and 2. When it is difficult to tighten the fixing nut 5 on the structural member 1 side, it is preferable to attach the fixing nut 5 on the structural member 1 side in advance while being fixed to the connecting plate 3.

(4) Next, a solidifying material 8b such as mortar is filled in each steel shell portion 8a composed of the connecting plates 3 of the structural members 1 and 2 and the vertical ribs 6a and 6b (FIG. 18 (b)).

INDUSTRIAL APPLICABILITY According to the present invention, large structural members such as PCa members, half PCa members, and tunnel lining segments can be easily and safely connected to each other.

1 Structural member (1st structural member)
2 Structural member (2nd structural member)
3 Connecting plate
3a Connecting hole 4 Connecting bolt (connecting member)
4a Male thread 5 Fixing nut (fixing member)
6 side plate
6a vertical rib
6b Vertical rib 7 Connecting surface 8 Compressive force transmission
8a Steel shell
8b solidifying material
8c Through hole 9 Solidifying material
10 Connecting bracket
11 Temporary jig
12 Fitting plate
12a through hole
13 Supplementary steel members
14 Bolt storage (connecting member storage)
15 volt box
16 Back plate
16a Bolt insertion hole

Claims (6)

A connecting plate arranged at each end of a first structural member and a second structural member of a steel / concrete structure, a steel shell concrete structure or a precast concrete structure connected to each other, and the connecting plate are penetrated and the first A connecting bolt that slides in the continuous direction of the structural member and the second structural member and is arranged between the first structural member and the second structural member to connect the first structural member and the second structural member to each other. Between members provided on the first structural member or the second structural member and provided with a bolt accommodating portion for accommodating the connecting bolt before being arranged between the first structural member and the second structural member. a connection structure, the bolt receiving portion is provided with a tacking portion, the bolt boxes and bolt insertion hole into which the connecting bolt accommodated in the bolt housing portion is prevented from exiting the bolt receiving portion, the temporary A connecting structure between members, wherein the attachment portion is a screw hole formed in the bolt insertion hole and into which a male screw portion of the connecting bolt is screwed. At each end of the first structural member and the second structural member of the steel / concrete structure, the steel shell concrete structure or the precast concrete structure connected to each other, the first structural member and the second structural member are connected to each other in the continuous direction. A plurality of connecting plates arranged apart from each other, penetrating the connecting plates, and sliding in the continuous direction of the first structural member and the second structural member, between the first structural member and the second structural member. A compressive force that is arranged and is provided between the connecting bolt that connects the first structural member and the second structural member to each other and the connecting plate and acts on the connecting portion between the first structural member and the second structural member. A connecting structure comprising a compressive force transmitting portion for transmitting a force and a bolt accommodating portion for accommodating the connecting bolt before being arranged between the first structural member and the second structural member. , the bolt receiving portion, said connecting bolt accommodated in the bolt housing portion is provided with a tacking portion, the bolt boxes and bolt insertion holes to prevent slipping out from the bolt receiving portion, said tack portion the bolt A connecting structure between members, which is a screw hole formed in an insertion hole and into which a male screw portion of the connecting bolt is screwed. In the connecting structure between the members according to claim 2, the compressive force transmitting portion includes a steel shell portion composed of the connecting plate and side plates arranged on both sides between the connecting plates and solidification arranged in the steel shell portion. A connecting structure between members, characterized in that it comprises a body or a supplementary steel member. The connecting structure between members according to claim 3, wherein the solidified body is formed of mortar or concrete. In the connecting structure between the members according to any one of claims 2 to 4, the joint plates are arranged in contact with each other at the ends of the first structural member and the second structural member. A connecting structure between members. The method for connecting members according to any one of claims 1 to 5, wherein the method for connecting members comprises the following steps.
(1) The connecting bolt is stored in the bolt storage portion provided in the first or second structural member, and the male screw portion of the connecting bolt is stored in the screw hole of the bolt insertion hole provided in the bolt storage portion. The process of screwing and temporarily attaching.
(2) A step in which the ends of the first structural member and the second structural member are brought into contact with each other, and the connecting plates are opposed to each other in the continuous direction of the first and second structural members.
(3) A step of pulling out the connecting bolt from the bolt accommodating portion and connecting the connecting bolt between the first structural member and the connecting plate of the second structural member.
(4) A step of fixing both ends of the connecting bolt to the connecting plate.

Images