JPH06137065A - Conjunction of new precast material members and new concrete wall member - Google Patents

Abstract

PURPOSE:To easily construct a shaft for starting or finishing of a shielding machine, even underground, with a restricted height below a road. CONSTITUTION:The protrusions 7 of a new precast material 1a are fitted in the recessions 9 of a new precast material 16. An adhesive is applied on the joint face between the new precast materials 1a, 1b. Attachment plates 15 made of the new material are fitted from both side faces of the new precast materials 1a, 1b. Namely, nuts 23 made of the new material are screwed in embedded bolts 13a, 13b made of the new material and also in pierced bolt 21 made of the new material to joint the new preset materials 1a, 1b together with the attached plates 15. The adhesive is also applied between the new precast materials 1a, 1b and the attachment plates 15.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of joining new material precast members and a new material concrete wall.

[0002]

2. Description of the Related Art Conventionally, when a shield machine is used to construct a tunnel, the shield starting point of the shaft earth retaining wall has been cut through manually after making a solid ground improvement such as pouring and freezing.

By the way, recently, a new material (CFRP Carbon Fiber Reinfor) made of carbon fiber that can be cut by a shield machine is used at the place where the shield machine of the shaft retaining wall is started and reached.
cedPlastic) with new material concrete,
NOMST (NovelMat) constructs a tunnel by directly excavating a vertical shaft made of new material concrete with a shield machine.
A tunnel construction method called erial Shield-cuttable Tunnel-wall system) has been devised.

[0004] The new material concrete is a concrete whose main reinforcement is a wire rope in which carbon fibers are twisted together, and is manufactured as a precast member (NOMST precast member). Then, in the construction of a normal shaft or the like, a precast member having a required predetermined length is integrally manufactured, and the precast member is built as a core material such as a muddy water solidifying wall and then excavated by a shield machine.

[0005]

By the way, in tunnel construction in urban areas, there are many cases where vertical shafts are constructed by road construction due to the problems of congestion of underground buried objects and interference with surrounding structures. There is. In this case, the conventional N
Since the OMST precast member has a long length and is built as one body, there is a problem that it is difficult to perform the construction by using the NOMST precast member when performing the road construction where the height is limited. there were.

The present invention has been made in view of the above problems, and an object thereof is to easily form a shaft for starting and reaching a shield machine even when performing road construction with a limited height. It is to provide a method for joining precast members of a new material and a concrete wall body of the new material that can be constructed as described above.

[0007]

[Means for Solving the Problems] In order to achieve the above-mentioned object, the first invention is the first and second inventions in which a new material rod made of carbon fiber, glass fiber or steel fiber is provided as a main bar in concrete. A method for joining new material precast members, characterized in that the new material precast member 2 is joined by a splicing plate made of a new material.

The second invention is a new material concrete wall body obtained by horizontally providing a plurality of new material precast columns obtained by the above-mentioned joining method of the new material precast members.

[0009]

In the present invention, a plurality of new material precast members are joined by a splicing plate made of a new material. Then, a plurality of obtained new material precast columns are provided in the horizontal direction to obtain a new material concrete wall.

[0010]

Embodiments of the present invention will now be described in detail with reference to the drawings.

1 and 2 are perspective views of a new material precast member according to a first embodiment of the present invention. FIG. 1 is a perspective view focusing on a new material rod, and FIG. 2 is a perspective view focusing on holes for embedded bolts and through bolts, both of which relate to the same new material precast member 1.

This new material precast member 1 is provided with a new material rod 5 made of carbon fiber, glass fiber or steel fiber as a main reinforcement in concrete 3.
The end portion of the new material rod 5 is provided with a bulb-shaped portion 6 for the purpose of fixing. It should be noted that the end of the new material rod 5 may be formed in another form such as a cylinder to improve the fixing property. A convex portion 7 is provided below the new material precast member 1, and
A recess 9 is provided on the upper part thereof. The convex portion 7 of another new material precast member is fitted into the concave portion 9. Figure 2
As shown in FIG. 9, nine through bolt holes 11 are provided on both upper side surfaces of the new material precast member 1, and embedded bolts 13a, 13b made of a new material are provided on both side surfaces thereof.
Is provided.

Reference numeral 15 is a splicing plate made of a new material for joining the two new material precast members. In this attachment plate 15, a hole 17 provided at the same position as the through bolt hole 11 and a hole 19 for inserting the embedded bolt 13a.
A hole 19b for passing a and the embedded bolt 13b is provided.

Next, a method of joining the new material precast member 1 will be described.

Two new materials are fitted by fitting the projections 7 of another new material precast member 1 into the recesses 9 of the new material precast member 1 as shown in FIG. Join precast members. An adhesive is applied to the joining surfaces of the two new material precast members to join them.

FIG. 3 is a cross-sectional view of a joining portion of two joined new material precast members 1a and 1b. As described above, the convex portion 7a of the new material precast member 1a is fitted into the concave portion 9b of the new material precast member 1b. Then, the embedded bolt 13a of the new material precast member 1b is passed through the hole 19a of the attachment plate 15, and the embedded bolt 13b of the new material precast member 1a is inserted into the hole 19 of the attachment plate 15.
The new material precast member 1a, 1
The attachment plates 15 are provided on both side surfaces of b. Further, a through bolt 21 made of a new material is passed through the through bolt holes 11 and 17. Then, the embedded bolts 13a, 13
b, a nut 23 made of a new material is screwed into the through bolt 21, and the splicing plate 15 joins the new material precast member 1a and the new material precast member 1b.

FIG. 4 shows three new material precast members 1.
The new material precast pillar obtained by joining a, 1b, and 1c is shown. In this case, the upper end of the new material rod 5a of the new material precast member 1a is fixed by the fastener 25. The new material precast member 1b is shown in Figs.
It is a new material precast member shown in. The lower end of the new material rod 5c of the new material precast member 1c is a fastener 25.
Fixed by.

Actually three new material precast members 1
When joining a, 1b, and 1c, after the new material precast member 1c at the bottom is built, the new material precast member 1b and the new material precast member 1a are sequentially joined by the method described above.

FIG. 5 is a schematic view of a shaft for a shield tunnel using the new material precast pillar 31. In the figure, 30 is a steel material, 33 is a wall body made of a new material precast pillar 31, and 35 is a shield machine. As shown in FIG. 5, the new material precast pillar 31 is used in the portion to be excavated by the shield machine 35. And the shield machine 35
By the new material precast pillar 31 wall 33
Is directly excavated to construct a shield tunnel.
The applicant has already applied for joining the new material precast pillar 31 and the steel material 30 (Japanese Patent Application No. 3-182).
564). As described above, according to the present embodiment, it is possible to easily construct a shaft for starting and reaching the shield machine even when performing road construction with a limited height. Further, when the shaft is deep, the precast member can be divided into appropriate lengths for on-site joining. Further, since the precast member is divided into appropriate lengths, it is easy to manufacture, transport and handle.

FIG. 6 is a sectional view of a joint portion of a new material precast member according to the second embodiment of the present invention. This embodiment has almost the same structure as that of the first embodiment, except that a concave portion 41a and a convex portion 43a are provided below the new material precast member 1a.
Is provided, a convex portion 41b and a concave portion 43b are provided above the new material precast member 1b, the convex portion 41a of the new material precast member 1a is fitted into the concave portion 43b of the new material precast member 1b, and the new material precast member 1b is provided. The convex portion 41b of the new material is fitted into the concave portion 43a of the new material precast member 1a, and the new material precast member 1a and the new material precast member 1b are joined.

The new material precast member 1a and the new material precast member 1b have the new material rod 5 and the embedded bolts 13a and 1 made of the new material, as in the first embodiment.
3b, a through bolt hole 11 is provided.

Next, a third embodiment will be described. In the third embodiment, the splice plate 55 and the cross through bolt 61 are used to join the two new material precast members.

FIG. 7 is a perspective view of a new material precast member 51 according to the third embodiment. Embedded bolts 53 made of a new material are provided on both upper and lower sides of the new material precast member 51. In the new material precast member 51, a new material rod is provided as a main bar similarly to the new material precast member 1 shown in FIG. Further, a cross through bolt hole (not shown) is provided. Also in each of the following examples, the illustration of the new material rod is omitted.

In FIG. 7, reference numeral 55 denotes a splicing plate made of a new material, and this splicing plate 55 is provided with a hole 57 through which the embedded bolt 53 made of the new material is inserted.

FIG. 8 is a sectional view of a joint portion of the new material precast member 51 shown in FIG. An adhesive agent is applied to the joint surface of the new material precast member 51a and the new material precast member 51b, and the attachment plate 5 made of the new material so that the holes 57 of the attachment plate 55 pass through the embedded bolts 53 on the side.
5 are provided. Then, the attachment plate 55 is attached by the nut 59 made of a new material. Further, a plurality of cross through bolts 61 made of a new material are provided in a zigzag pattern in the cross through bolt holes.

FIG. 9 is a front view of a joint portion between the new material precast member 71a and the new material precast member 71b according to the fourth embodiment.

The new material precast member 71 according to the fourth embodiment has substantially the same structure as the new material precast member 51 shown in FIG. 7, except that embedded bolts 73 made of the new material are provided on the upper and lower four side surfaces. To be Moreover, the hole for the cross through bolt is not provided.

As shown in FIG. 9, the joining surface of the new material precast member 71a and the new material precast member 71b, and the new material precast members 71a and 71b and the attachment plate 75.
An adhesive agent is applied to the joint surface of. Then, the attachment plate 75 made of a new material is provided with the new material precast member 7 from the four sides.
The new material precast member 71a and the new material precast member 71b are bonded to each other by bonding the splicing plate 75 with the nuts 77 made of a new material.

Incidentally, in the third embodiment shown in FIGS. 7 and 8, it is also possible to provide splicing plates on the four side surfaces as shown in FIG. 9 to achieve the joining.

Next, a fifth embodiment will be described. Figure 1
0 is a perspective view of a splicing plate 81 made of a new material according to the fifth embodiment. The attachment plate 81 has a hollow rectangular parallelepiped shape.

FIG. 11 is a front view of a joint portion of the new material precast members 83a and 83b according to the fifth embodiment.
An adhesive is applied to the four side surfaces of the new material precast member 83b, and the lower half of the splicing plate 81 shown in FIG. 10 is bonded to the new material precast member 83b. Further, an adhesive is applied to the upper surface of the new material precast member 83b and the inside of the upper half of the attachment plate 81, and the new material precast member 83a is provided from above to join the new material precast member 83a and the new material precast member 83b. Is done.

Next, a sixth embodiment will be described. In this sixth embodiment, a new material H-shaped steel is provided at the end of the new material precast member to join the new material precast member.

FIG. 12 is a perspective view of a new material precast member 91 according to the sixth embodiment. New material H-shaped steels 93a and 93b made of a new material are provided on the upper and lower portions of the new material precast member 91. The new material H-shaped steels 93a and 93b are provided with holes 95 for passing bolts.

FIG. 13 is an explanatory view of a method of joining the new material precast member 91a and the new material precast member 91b.

When joining the new material precast member 91a and the new material precast member 91b, the splicing plates 97a, 97b, 97c made of the new material are provided from the four side surfaces of the joining portion.
97d is provided, and further auxiliary contact plates 101 made of four new materials are provided from the inside of the new material H-shaped steels 93a and 93b. Note that FIG. 13 shows only one auxiliary attachment plate 101.

FIG. 14 is a front view of a joint portion between the new material precast member 91a and the new material precast member 91b. The new material H-shaped steel 93a and the new material H-shaped steel 93b are splicing plates 97a, 97b, 97c, 97d from four side surfaces,
Auxiliary attachment plate 10 from the inside of the new material H-shaped steel 93a, 93b
1, the new material precast member 9 is formed by the bolt 103 made of the new material and the nut 105 made of the new material.
The 1a and the new material precast member 91b are joined. Reference numeral 107 is an anchor made of a new material for fixing the new material H-shaped steels 93a and 93b to the new material precast members 91b and 91a.

Incidentally, as in the first embodiment, the second to sixth
A wall body as shown in FIG. 5 is constructed using the new material precast columns obtained by the joining method according to the embodiment of FIG.

[0038]

As described above in detail, according to the present invention, it is possible to easily construct a shaft for starting and reaching a shield machine even when performing road construction with a limited height.

[Brief description of drawings]

FIG. 1 is a perspective view of a new material precast member 1 focusing on a new material rod 5 according to the first embodiment.

FIG. 2 is a perspective view of a new material precast member 1 according to the first embodiment, focusing on a through bolt hole 11 and embedded bolts 13a and 13b.

FIG. 3 is a cross-sectional view of a joint between the new material precast member 1a and the new material precast member 1b.

[Figure 4] Diagram showing new material precast pillars

FIG. 5 is an explanatory diagram when the wall 33 is used in a vertical shaft for a shield tunnel.

FIG. 6 is a cross-sectional view of a joint portion between a new material precast member 1a and a new material precast member 1b according to the second embodiment.

FIG. 7 is a perspective view of a new material precast member 51 according to a third embodiment.

FIG. 8 is a cross-sectional view of a joint portion between a new material precast member 51a and a new material precast member 51b according to the third embodiment.

FIG. 9 is a front view of a joint portion between a new material precast member 71a and a new material precast member 71b according to the fourth embodiment.

FIG. 10 is a perspective view of a splicing plate 81 according to a fifth embodiment.

FIG. 11 is a front view of a joint portion between a new material precast member 83a and a new material precast member 83b according to the fifth embodiment.

FIG. 12 is a perspective view of a new material precast member 91 according to a sixth embodiment.

FIG. 13 is an explanatory view of joining the new material precast member 91a and the new material precast member 91b.

FIG. 14 is a front view of a joint portion between a new material precast member 91a and a new material precast member 91b.

[Explanation of symbols]

1, 51, 71, 83, 91 ... New material precast member 3 ... Concrete 5 ... New material rod 7, 41 ... ... Convex portion 9, 43 ... ... Recessed portion 15, 55, 75, 81 , 97 ……… Splicing plate 31 ……… Steel underground underground wall 33 ……… Wall body 37 ……… Shield machine 61 ……… Cross through bolt 93 ……… New material H type steel

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Koji Matsumoto 5-29-25 Oizumigakuencho, Nerima-ku, Tokyo (72) Minoru Nakamura 2-3-6 Otemachi, Chiyoda-ku, Tokyo New Japan (72) Inventor Masaki Tatsuta 2-3-6 Otemachi, Chiyoda-ku, Tokyo Inside Nippon Steel Co., Ltd. (72) Inventor Katsuhiro Suzuki 4--12-20 Nihonbashihonmachi, Chuo-ku, Tokyo Sato Kogyo Co., Ltd. (72) Inventor Yoshihiro Takano 2-5-3 Misaki-cho, Chiyoda-ku, Tokyo Inside Tetsuken Construction Co., Ltd.

Claims (10)

[Claims] 1. A first and a second new material precast member having a new material rod made of carbon fiber, glass fiber or steel fiber as a main bar in concrete are joined by a splicing plate made of a new material. A method for joining a new material precast member, which is characterized in that 2. The joining surface of the new material precast member,
The method for joining a new material precast member according to claim 1, wherein an adhesive is applied to a joint surface between the new material precast member and the splicing plate. 3. The new precast member of the first new material has a convex portion, the precast member of the second new material has a concave portion, and the convex portion and the concave portion are fitted to each other. Method of joining material precast members. 4. The method for joining a new material precast member according to claim 1, wherein a cross bolt made of a new material is provided so as to penetrate the first new material precast member and the second new material precast member. 5. The method of joining a new material precast member according to claim 1, wherein the splicing plates are provided on two surfaces of a joining portion of the first new material precast member and the second new material precast member. 6. The method of joining a new material precast member according to claim 1, wherein the splicing plates are provided on four surfaces of a joining portion of the first new material precast member and the second new material precast member. 7. The method of joining a new material precast member according to claim 1, wherein the attachment plate is a hollow new material attachment box. 8. The first and second new material H-section steels are respectively provided at the end portions of the first new material precast member and the second new material precast member, and the first and second new material H-section steels are provided. The method for joining a new material precast member according to claim 1, wherein the new material H-section steel is joined by the splicing plate. 9. A new material precast pillar obtained by the method for joining new material precast members according to claim 1,
A new material concrete wall that can be obtained by installing multiple horizontal walls. 10. The new material concrete wall body according to claim 9, wherein the new material concrete wall body is used for a vertical shaft for a shield tunnel.