JP2001012190A - Joint structure for hollow structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To stably connect a side member and an upper member by providing a coupling means coupling the faying face of the end portion of the side member and the faying face of the end portion of the upper member, and connecting the end portion of the side member and the end portion of the upper member on the outside than the coupling means. SOLUTION: The coupling recess 20 of a side member 4 is coupled to the coupling projection 26 of an upper member 6 to set the positional relation. A connecting rod 36 is inserted into one side insertion hole 30 of the end portion 16 of the side member 4 and the other side insertion hole 34 of the end portion 22 of the upper member 6, and nuts 38 are fastened to both end portions of the connecting rod 36 via elastic washers 40. The positional relation between the side member 4 and upper member 6 can be easily set by a coupling means 12 as a result, and workability can be improved. Connection is facilitated by a connecting means 14 from the outside, a degree of freedom is attained by pin connection, the connected state is stabilized, and the strength of a hollow structure is increased.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint structure for a hollow structure, and more particularly to a joint structure for a hollow structure connecting a side member and an upper member.

[0002]

2. Description of the Related Art In a hollow structure, for example, a so-called footing type comprising a pair of side members and an upper member mounted on the side members, or a pair of side members and a mounting member mounted on the side members. There is a so-called invert type, which includes an upper member and a bottom plate member provided between a pair of side members, and is formed in an inner curved surface shape.

In this hollow structure, a plurality of side members or upper members extend in an axial direction or a lateral direction while maintaining the same cross-sectional area or different cross-sectional areas depending on the application. Used for construction of tunnels.

[0004]

However, conventionally, in the assembly of a hollow structure, it has been difficult to properly set the positional relationship between the side member and the upper member when the side member and the upper member are connected. In addition, it is troublesome to connect the side member and the upper member, and therefore, the workability is reduced, and the connection state between the side member and the upper member tends to be unstable. .

[0005]

SUMMARY OF THE INVENTION In order to eliminate the above-mentioned disadvantages, the present invention provides at least a pair of side members and an upper member mounted on the side members. In a joint structure of a hollow structure connecting and integrating members, an engaging means for engaging a joint surface at an end portion of the side member with a joint surface at an end portion of the upper member is provided, Connecting means for connecting an end portion of the member and an end portion of the upper member outside the engagement means is provided.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS According to the present invention, the joining surface at the end portion of the side member and the joining surface at the end portion of the upper member are engaged by the engaging means, so that the positional relationship between the side member and the upper member can be easily made. And the end portion of the side member and the end portion of the upper member are connected by the outer connecting means, so that the side member and the upper member can be easily assembled to improve the workability thereof, The stability of the side member and the upper member can be improved.

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of the present invention; 1 to 3 show a first embodiment of the present invention. 2 and 3, reference numeral 2 denotes a hollow structure formed by connecting a plurality of components to form an inner curved surface. As shown in FIG. 2, the hollow structure 2 has a pair of side members 4A, 4A and an upper member 6A as constituent members.
A so-called footing type 2A,
As shown in FIG. 3, a pair of side members 4
B, 4B, an upper member 6B, and a bottom plate member 8B.

The side member 4 and the upper member 6 are connected to the joint mechanism 1
0 is connected integrally. This joint mechanism 10
It comprises an engaging means 12 and a connecting means 14.

The engagement means 12 is provided at the end portion 16 of the side member 4.
Engagement recess 20 having a semicircular cross section formed on the joining surface 18
And an engagement projection 26 having a semicircular cross section formed on the joint surface 24 of the end portion 22 of the upper member 6 so as to engage with the engagement recess 20.

On the outer side surface of the side member 4, a space 28 for one side member is formed, for example, in a rectangular shape so as to be separated from the joint surface 18 of the end portion 16 of the side member 4. In the end portion 16 of the side member 4 between the joint surface 18 of the side member 4 and the space 28 for one side member, one end penetrating the joint surface 18 of the side member 4 and the space 28 for one side member along the outer surface. A side insertion hole 30 is formed.

Further, on the outer surface of the upper member 6, a space 32 for the other side member is formed, for example, in a rectangular shape so as to be separated from the joint surface 24 of the end portion 22 of the upper member 6. The end portion 22 of the upper member 6 between the joint surface 24 of the upper member 6 and the space 32 for the other member penetrates the joint surface 24 of the upper member 6 and the space 32 for the other member along the outer surface. The other-side insertion hole 34 corresponding to the one-side insertion hole 30 is formed.

The one-side insertion hole 30 and the other-side insertion hole 34
A connecting rod 36 constituting the connecting means 14 is provided so as to pass therethrough. The connecting rod 36 functions as a tensile member, and is made of, for example, a steel rod or wire.
Screws are formed at both ends. This connecting rod 36
The nuts for tightening 38,
38 is provided by screwing via elastic washers 40, 40.

Next, the operation of the first embodiment will be described.

When connecting the side member 4 and the upper member 6, first, the engaging recess 20 of the side member 4 and the engaging protrusion 26 of the upper member 6 are engaged, and the side member 4 and the upper member 6 are connected. Member 6
And the end portion 1 of the side member 4
6, the connecting rod 36 is inserted into the one-side insertion hole 30 and the other-side insertion hole 34 of the end portion 22 of the upper member 6, and elastic washers 40, 40 are inserted into both end portions of the connection rod 36. The fastening nuts 38, 38 are screwed and tightened. The elastic washer 40 is made of, for example, a member made of natural or synthetic rubber, a member obtained by putting a core material in a rubber material, or a member such as a steel material formed to project in a curved or chevron shape.

As a result, when the side member 4 and the upper member 6 are connected to each other, the positional relationship between the side member 4 and the upper member 6 can be easily set by the engagement means 12, thereby improving the workability. In addition, the connecting means 14 from the outside facilitates the connection between the side member 4 and the upper member 6 to improve the workability thereof, and allows the side member 4 and the upper member 6 to be entirely pin-joined. The degree of freedom can be increased, the connection state can be stabilized, and the strength of the hollow structure 2 can be improved.

In the first embodiment, since the connecting rods 36 and the like of the connecting means 14 do not protrude from the outer surfaces of the side members 4 and the upper member 6, the side members 4 and the upper member 6 do not protrude. Can be formed smoothly to avoid breakage of components and the like.

FIG. 4 shows a second embodiment of the present invention.

In the following embodiment, portions having the same functions as those in the above-described first embodiment will be described with the same reference numerals.

The features of the second embodiment are as follows. That is, the side member 4 and the upper member 6 include
An engagement means 12 is provided. Further, in the side member 4, a one-side member space 104 is formed, for example, in a triangular shape by a one-side inclined surface 102 separated from the joint surface 18 of the side member 4 and inclined at an angle α from the outer peripheral surface. Substantially the central portion of the joining surface 18 of the member 4 and the space 1 for one side member
And an arc-shaped one-sided curved insertion hole 106 that penetrates through the hole. Further, in the upper member 6, the other-side member space 110 is formed, for example, in a triangular shape by the other-side inclined surface 108 separated from the joint surface 24 of the upper member 6 and inclined at an angle α from the outer peripheral surface. An arc-shaped other-side curved insertion hole 11 that passes through a substantially central portion of the joint surface 24 of the member 6 and the other-side member space 110 and corresponds to the one-side curved insertion hole 106.
Form 2

The one side and the other side curved insertion holes 106 and 112
, A connecting rod 114 is inserted. This connecting rod 1
Reference numeral 14 functions as a tensile member similarly to the case of the first embodiment. Tightening nuts 116, 1 are provided at both ends of the connection bar 114 where the thread is formed.
16 is screwed through elastic washers 118,118.

According to the structure of the second embodiment, when the tightening nuts 116, 116 at both end portions of the connecting rod 114 are tightened, the end portions 16 of the side member 4 and the end portion 22 of the upper member 6 are attached. Can apply a stress to an external pressure in advance, and can withstand a large external pressure.

FIG. 5 shows a third embodiment of the present invention.

The features of the third embodiment are as follows. That is, the side member 4 and the upper member 6 include
An engagement means 12 is provided. Further, one side flange portion 202 is formed so as to protrude on the outer surface of the end portion 16 of the side member 4, and the other side flange is formed on the outer surface of the end portion 22 of the upper member 6 so as to correspond to the one side flange portion 202. The portion 204 is formed to protrude. Further, a one-side insertion hole 206 is formed in the one-side flange portion 202 and the other-side flange portion 20 is formed.
4, the other-side insertion hole 208 is formed. The connecting rod 210 is inserted into the insertion holes 206 and 208 on the one side and the other side. The connecting bar 210 functions as a tensile member, as in the case of the first embodiment described above. Tightening nuts 212, 212 are screwed through elastic washers 214, 214 to the threaded ends of the connecting rod 210, respectively.

According to the configuration of the third embodiment, since the one side and the other side flange portions 202 and 204 protrude from the outer side surfaces of the side member 4 and the upper member 6, respectively, the connecting rod member 210 and the elastic member are formed. Washers 214, 214, tightening nut 2
12, 212 can be easily attached, and the workability thereof can be improved.

FIG. 6 shows a fourth embodiment of the present invention.

The features of the fourth embodiment are as follows. That is, the side member 4 and the upper member 6 include
An engagement means 12 is provided. Also, an L-shaped one-side connecting member 302 is attached to the outer surface of the end portion 16 of the side member 4 with a one-side mounting bolt 304, and the L-shaped other side is attached to the outer peripheral surface of the end portion 22 of the upper member 6. Connection member 306
Is mounted with the other side mounting bolt 308. Further, the connection members 302 and 304 on one side and the other side are connected with the connecting rod 310 and the nuts for tightening 312 and 312.

According to the structure of the fourth embodiment, since the connecting means 14 is attached, it is not necessary to change the shapes of the side member 4 and the upper member 6, and the number of processing steps and the like can be reduced.

FIGS. 7A and 7B show a fifth embodiment of the present invention.

The feature of the fifth embodiment lies in the following points. That is, in FIG.
02A, a curved portion 404 is formed at a substantially central portion, or the connecting member 402B is simply flat in FIG. 7B. The connection member 402 is made of, for example, an iron plate, a spring plate, an elastic member made of rubber and a spring plate, an elastic member made of rubber and a fiber, and the like. The end portion 16 of the member 4 and the outer surface of the end portion 22 of the upper member 6 are connected to each other.

According to the configuration of the fifth embodiment, FIG.
7A, the movement of the side member 4 and the upper member 6 can be easily absorbed by the curved portion 404 of the connection member 402A. In FIG. 7B, the connection member 402
The configuration of B can be simplified.

FIG. 8 shows a sixth embodiment of the present invention.

The features of the sixth embodiment are as follows. That is, the side member 4 and the upper member 6 include
An engagement means 12 is provided. Further, in the upper member 6, a space 502 for the member is formed apart from the joint surface 24 of the upper member 6, and an insertion hole 504 penetrating the joint surface 24 of the upper member 6 and the space 502 for the member is formed. I do. Further, an insertion hole 504 is formed in the joint surface 18 of the side member 4.
An insertion hole 506 is formed at a position corresponding to. Then, the bolt-shaped connection member 508 is inserted through the insertion hole 504 from the member space 502 side through the elastic washer 510 and inserted into the insertion hole 506. The elastic washer 510 is made of, for example, a member made of a natural or synthetic rubber, a member obtained by putting a core material in a rubber material, or a member such as a steel material formed to project in a curved or chevron shape.

According to the structure of the sixth embodiment, if the connecting member 508 is inserted from the insertion hole 504 into the insertion hole 506, the positional relationship between the side member 4 and the upper member 6 can be improved.
It is possible to prevent the side member 4 and the upper member 6 from shifting.

FIG. 9 shows a seventh embodiment of the present invention.

The features of the seventh embodiment are as follows. That is, the side member 4 and the upper member 6 include
An engagement means 12 is provided. Further, in the upper member 6, a space 602 for the member is formed apart from the joint surface 24 of the upper member 6, and an insertion hole 604 penetrating the joint surface 24 of the upper member 6 and the space 602 for the member is formed. I do. Further, a through hole 604 is formed in the joint surface 18 of the side member 4.
A screw hole 606 is formed in correspondence with. Then, the connection bolt 608 is inserted from the member space 602 side into the insertion hole 604 via the elastic washer 610, and is screwed and fixed to the screw hole 606. The elastic washer 610 is provided in the sixth
This is similar to that of the embodiment.

According to the configuration of the seventh embodiment, the connection bolt 608 is fixed to the screw hole 606 of the side member 4, so that the positional relationship between the side member 4 and the upper member 6 can be set even better. , It is possible to maintain the bonding state satisfactorily.

FIG. 10 shows an eighth embodiment of the present invention.

The features of the eighth embodiment are as follows. That is, the side member 4 is used as the engagement means 12.
A large arcuate engaging recess 702 is formed on the joining surface 18 of the upper member 6 and the side member 4
The gaps S1 and S2 are formed at the inner and outer edge portions between the joint surface 18 of the upper member 6 and the joint surface 24 of the upper member 6 to form the engaging convex portion 704 that engages with the large arc-shaped engaging concave portion 702.

Further, a space 706 for one side member which opens to the outer side surface and the joint surface 18 is formed in the end portion 16 of the side member 4. Further, a space 708 for the other side member is formed in the end portion 22 of the upper member 6 so as to correspond to the space 706 for the one side member.

In the end portion 16 of the side member 4, a one-side steel plate 710 as a one-side connection member is provided in the one-side member space 706.
Is installed. The one-side steel plate 710 includes a one-side step portion 712.
It is locked to.

In the end portion 22 of the upper member 6, another side steel plate 714 is installed as another side connection member in the other side member space 708. This other side steel plate 714 is one side steel plate 7.
10 and is locked to the other side step portion 716.

The one-side and other-side steel plates 710 and 714 are formed with one-side and other-side insertion holes 718 and 720. This one side,
The cover pipe 722 is inserted into the other-side insertion holes 718 and 720.

A connecting bolt 724 is inserted into the cover pipe 722 from the space 708 for the other side member, and a threaded portion on the tip side of the connecting bolt 724 is inserted between the one side steel plate 710 and the other side. A connection nut 728 is screwed through a side elastic washer 726, and a connection bolt 724 is
The other-side elastic washer 730 is interposed between the head 724a and the other-side steel plate 714. This one side, the other side elastic washer 7
Reference numerals 26 and 730 are the same as those in the sixth embodiment.

The one-side member space 706 is filled with one-side urethane foam 732 between the one-side steel plate 710 and the one-side member space 708, and the other-side member 716 is provided in the other-side member space 708.
The other side is filled with urethane foam 734 and provided. The one-side and other-side urethane foams 732 and 734 are made of an elastically deformable material.

According to the structure of the eighth embodiment, when the side member 4 and the upper member 6 move, the steel plates 710 and 714 on one side and the other side are slidable on the cover pipe 722. By absorbing the movement, the end portion 16 of the side member 4,
The breakage of parts such as the end portion 22 of the upper member 6 and the connection bolt 724 is prevented, and the urethane foam 7 on one side and the other side is prevented.
Since the components such as the connection bolts 724 are protected by filling with 32 and 734, the durability can be improved.

[0046]

As is apparent from the above detailed description, according to the present invention, there is provided an engaging means for engaging the joining surface at the end portion of the side member and the joining surface at the end portion of the upper member, and By providing the connecting means for connecting the end portion of the upper member and the end portion of the upper member outside the engaging means, the joining surface of the side member and the joining surface of the upper member are engaged by the engaging means.
Since the positional relationship between the side member and the upper member can be easily set, and the end portion of the side member and the end portion of the upper member are connected by the outer connecting means, the side member and the upper member can be easily assembled. This will improve workability,
Further, the connection state between the side member and the upper member can be stabilized, and the strength of the hollow structure can be improved.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a joint mechanism according to an arrow 1 in FIGS.

FIG. 2 is a configuration diagram of a footing type hollow structure.

FIG. 3 is a configuration diagram of an invert type hollow structure.

FIG. 4 is a configuration diagram of a joint mechanism according to a second embodiment.

FIG. 5 is a configuration diagram of a joint mechanism in a third embodiment.

FIG. 6 is a configuration diagram of a joint mechanism according to a fourth embodiment.

FIG. 7 shows a fifth embodiment. (A) is a block diagram of a connecting member having a curved portion. (B) is a block diagram of a flat connecting member.

FIG. 8 is a configuration diagram of a joint mechanism according to a sixth embodiment.

FIG. 9 is a configuration diagram of a joint mechanism according to a seventh embodiment.

FIG. 10 is a sectional view of a joint mechanism according to an eighth embodiment.

[Explanation of symbols]

 2 hollow structure 4 side member 6 upper member 10 joint mechanism 12 engaging means 14 connecting means

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Takao Iwasaki 5-7-10 Yanagizaki, Kawaguchi City, Saitama Prefecture Higashiurawa NH Residence 402 (72) Inventor Kiichi Yamashita 2-1-15- Shimizu, Shirai-machi, Inba-gun, Chiba Prefecture 302 (72) Inventor Takeshi Odaka 2-44-17 Horikiri, Katsushika-ku, Tokyo Maple Heights 201 F-term (reference) 2D055 BB02 GC06 GC07 GD01 2E125 AA68 AA75 AD06 AE02 AF01 AG07 AG12 AG14 AG23 AG25 AG41 AG59 AG60 BB02 BB05 BB11 BC02 BD01 BE05 BF01 BF05 CA03 CA05 CA09 EA17

Claims (6)

[Claims] In a joint structure of a hollow structure, at least one pair of side members and an upper member mounted on the side member are provided, and the side members and the upper member are connected and integrated. An engaging means for engaging a joining surface of an end portion of the side member with a joining surface of an end portion of the upper member is provided, and the end portion of the side member and the end portion of the upper member are made smaller than the engaging means. A joint structure for a hollow structure, wherein connection means for connecting outside is provided. 2. The connecting means forms a space for one side member on an outer surface of the side member away from a joining surface of an end portion of the side member, and a space for the upper member on an outer surface of the upper member. Forming a space for the other side member separated from the joining surface of the end portion, forming a one side insertion hole penetrating the joining surface of the side member and the space for the one side member at the end portion of the side member, An end portion of the upper member is formed with another side insertion hole that penetrates the joint surface of the upper member and the space for the other side member, and is used for connection that is inserted into the one side insertion hole and the other side insertion hole. The joint structure for a hollow structure according to claim 1, further comprising a bar and a fastening nut screwed to the connecting bar. 3. The one-side flange includes a first flange portion formed on an outer surface of an end portion of the side member, and a second flange portion formed on an outer surface of an end portion of the upper member. A connecting rod inserted into the one-side insertion hole and the other-side insertion hole, and a connection rod and a connection rod formed between the one-side insertion hole and the other-side insertion hole. The joint structure for a hollow structure according to claim 1, further comprising a fastening nut screwed into the joint. 4. The connecting means forms a member space on an outer surface of an end portion of the upper member away from a joint surface of an end portion of the upper member, and the upper member is formed on an end portion of the upper member. Forming an insertion hole passing through the joining surface of the member and the space for the member, and providing an insertion hole at a position corresponding to the insertion hole in the joining surface of the side member, and being inserted into the insertion hole and being inserted into the insertion hole. The joint structure for a hollow structure according to claim 1, further comprising a connecting member to be inserted. 5. The connection means forms a space for one side member at an end portion of the side member, and a space for another side member corresponding to the space for the one side member at an end portion of the upper member. Forming, at the end portion of the side member, a one-side connection member is provided in the one-side member space, and at the end portion of the upper member, another side connection member is provided in the other-side member space, One side, the other side connection member is formed with one side, the other side insertion hole, a cover pipe is inserted through the one side, the other side insertion hole, and a connection bolt inserted into the cover pipe, and A tightening nut screwed to the connecting bolt, a one-side elastic washer interposed between the tightening nut and the one-side connecting member, and between a head of the connecting bolt and the other-side connecting member. The joint for a hollow structure according to claim 1, further comprising an interposed other-side elastic washer. Construction. 6. The one-side member space is filled with one-side urethane foam between the one-side connection member and the one-side connection member, and the other-side member space is filled with the other-side connection member. The joint structure for a hollow structure according to claim 5, wherein the other side is filled with urethane foam.