JP2000129628A - Shoe and girder, and erection by use of shoe - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate fitting works and reduce manufacturing cost by interposing a shoe body in between a girder and a lower structure and fixing the upper part of the lower fixing member to the shoe body and further, fixing an upper socket on the underface of the girder. SOLUTION: An upper fixing member 12 is formed to have a T-shape at the head 12a and a male thread is cut at the lower end. The upper part of an upper socket 14 in which reinforcing rods are fixed on the external face is provided with a widened part 14b having such an inside diameter where the head 12a of the upper fixing member 12 can rotate circumferentially, and the lower part is constricted to form a norrowed diametral part 14c. When erecting it, the upper fixing member 12 is inserted in the upper socket 14 embedded in a girder in advance. After the head 12a has reached the widened diametral part 14b of the upper socket 14, the shoe 10 is rotated circumferentially to fix the shoe body 11 to the pretensioned girder G. The lower fixing member 13 is inserted in a lower socket 15 in which a hardener is placed. In this way, a girder can be easily fixed to a shoe without fastening bolts, and since steel plates or the like are not required, the manufacturing cost can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shoe, a girder suitable for a pretend girder, and a method of erection using the shoe.

[0002]

2. Description of the Related Art Conventionally, various techniques have been developed and provided for a bridge erection method.

For example, in order to install a girder previously manufactured in a factory or the like, for example, a so-called pretend girder, first, FIG.
As shown in FIG. 0, the laminated rubber to which the lower sole plate is fixed is bolted to the upper sole plate of the pretend girder carried into the site, which is embedded in advance. This is because, after the Great Hanshin Earthquake, it was necessary to make it possible to resist lift as well (see Road Bridge Specifications 1).
Chapters 2 to 13).

Then, as shown in FIG. 21, a lower sole plate is inserted into a hole formed on the upper surface of the lower structure, concrete is poured into the lower sole plate, and the lower sole plate is fixed to the lower structure.

[0005]

However, the prior art has the following problems.

[0006] The entire shoe is very heavy (100
kg or more) and the bolts had to be fastened, so the fixing work to the underside of the girder required a great deal of labor.

[0007] In addition, since the number of members is large, the manufacturing cost of the shoe is high.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a shoe and a girder which can be easily attached to the lower surface of the girder and which are inexpensive to manufacture, and a method for erection using the gutter. The point is to provide.

[0009]

SUMMARY OF THE INVENTION In view of the above problems, the present invention has the following arrangement.

[0010] The gist of the invention according to claim 1 is a shoe for supporting a girder used for a road bridge or the like, the shoe body being interposed between the girder and a lower structure and capable of being deformed in a horizontal direction. An upper fixing member having a lower portion fixed to the shoe body and a hook portion formed at an upper portion; a lower fixing member having an upper portion fixed to the shoe body; An enlarged diameter portion whose inner diameter is enlarged so that the hooking portion can rotate, and at least a lower portion of the enlarged diameter portion is a reduced diameter portion whose diameter is reduced so that the engaging portion can be hooked. An upper socket fixed to the lower surface of the girder, the reduced diameter portion having a continuous groove leading to the enlarged diameter portion and capable of introducing the latching portion. Exist in Kutsu. The gist of the invention described in claim 2 is that the upper fixing member is screwed to the shoe body with a T-bolt, and the groove of the upper socket is provided on the opposite side in the radial direction. In the shoe. The gist of the invention according to claim 3 resides in the shoe according to claim 1 or 2, wherein a protrusion is provided on an outer surface of the upper socket. The gist of the invention according to claim 4 resides in the shoe according to any one of claims 3 to 3, wherein the protrusion is formed by fixing a reinforcing bar to an outer surface of the upper socket. The gist of the invention according to claim 5 resides in the shoe according to claim 3 or 4, wherein the projection is formed in a flange shape on an outer surface of the upper socket. The gist of the invention according to claim 6 is that, in the upper socket, an outer diameter of a portion into which the upper fixing member is inserted is larger than other portions. Exists in the described shoe. The gist of the invention according to claim 7 resides in the shoe according to any one of claims 1 to 6, wherein the upper socket is a casting. The gist of the invention according to claim 8 is that a stopper for disengaging the engaging portion of the upper fixing member into the enlarged diameter portion of the upper socket and disabling rotation of the upper fixing member by a predetermined angle or more around the axial direction is provided. The shoe according to any one of claims 1 to 7, wherein the shoe is provided on an upper surface of the reduced diameter portion. The gist of the invention according to claim 9 is that at the upper end of the lower fixing member,
The shoe according to any one of claims 1 to 8, wherein a convex portion fixed to the shoe body is provided.
The gist of the invention according to claim 10 resides in the shoe according to any one of claims 1 to 9, wherein an external thread is cut on an outer side surface of the projection and screwed to the shoe body. .
The gist of the invention according to claim 11 resides in the shoe according to any one of claims 1 to 10, wherein a protrusion is provided on an outer surface of the lower fixing member. The gist of the invention according to claim 12 is that the protrusion is formed by fixing a reinforcing bar to an outer surface of the lower fixing member. Exist. The gist of the invention according to claim 13 resides in the shoe according to any one of claims 1 to 12, wherein the protrusion is formed in a flange shape on an outer surface of the lower fixing member. The gist of the invention according to claim 14 resides in the shoe according to any one of claims 1 to 13, wherein the lower fixing member is a casting. The gist of the invention according to claim 15 is characterized in that a lower socket, which has a cylindrical shape as a whole and is fixed to a lower structure, is provided, and the lower fixing member is inserted and fixed in the lower socket. The shoe according to any one of 1 to 7 above. The gist of the invention according to claim 16 is a method of erection using the shoe according to claims 1 to 14, wherein the girder is carried into a site and is buried in advance so that the upper socket is opened to the lower surface. Inserting the upper fixing member into the upper socket while introducing the hook into the groove,
After the engaging portion reaches the enlarged-diameter portion, the upper fixing member is rotated around the circumferential direction so that the engaging portion is engaged on the upper surface of the reduced-diameter portion, and the shoe body is fixed to the beam. Then, the girder to which the shoe is fixed is lowered and a hardening material is cast so that the lower fixing member is inserted into a box opening opening on the lower structure upper surface. The gist of the invention according to claim 17 is the method of erection using the shoe according to claim 15, wherein the girder carried into the site and buried in advance so that the upper socket is opened to the lower surface is provided. Inserting the upper fixing member into the upper socket while introducing the latching portion into the groove, and after the latching portion reaches the enlarged diameter portion, rotating the upper fixing member around the circumferential direction, After fixing the shoe main body to the girder by hooking the hook portion on the upper surface of the reduced diameter portion, and pouring a hardening material into the lower socket, the lower fixing member is inserted into the lower socket. In addition, there is provided a method of erection wherein the girder to which the shoe is fixed is lowered. The gist of the invention described in claim 18 is as follows.
Above in the socket. The gist of the invention according to claim 19 resides in the lower fixing member according to any one of claims 9 to 14. The gist of the invention according to claim 20 resides in a girder wherein the upper socket according to claim 18 is buried.

In the present invention, the term "lower structure" refers to a pier, an abutment, and other objects on which a girder is erected.

[0012]

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

(First Embodiment) As shown in FIG.
The shoe 10 according to the present embodiment supports a so-called pretend girder G used for a road bridge or the like.

The shoe 10 includes a shoe body 11 interposed between the pre-girder G and the lower structure P, an upper fixing member 12 and a lower fixing member 13 fixed to the shoe body 11, and an end of the pre-girder G. An upper socket 14 buried so as to open on the lower surface of the part,
And a lower socket 15 buried in the lower structure P so as to open on the upper surface.

The shoe body 11 is a cylindrically laminated rubber that is interposed between the spar and the lower structure P and that can be deformed in the horizontal direction.

The upper fixing member 12 is a so-called T-bolt as shown in FIGS. The head 12a is T-shaped and forms a hook. A male screw is cut at the lower end, and is screwed to the center in a plan view of a steel plate embedded in the upper part of the shoe body 11.

The lower fixing member 13 is a straight bolt, as shown in FIG. 1, and is screwed to the center of a steel plate embedded in the upper part of the shoe body 11 in a plan view.

As shown in FIGS. 4 and 5, and FIGS. 8 and 9, the upper socket 14 has a cylindrical shape as a whole. This is to prevent concrete from flowing into the upper socket 14 when precasting the pretend girder G. The inner diameter of the upper part is increased and the enlarged diameter part 14b
Has made. The inner diameter of the enlarged diameter portion 14b is large enough that the head 12a can rotate around the circumferential direction. The diameter from the enlarged portion 14b to the lower end is reduced to form a reduced diameter portion 14c. The reduced diameter portion 14c has a continuous groove 14d extending from the lower end to the enlarged diameter portion 14b. Reinforcing wires are provided around the upper socket 14 and fixed to the pretend girder G.

The lower structure P is box-opened, and a lower socket 15 is embedded in the box opening so that the upper surface is open.

The lower socket 15 has a cylindrical shape as a whole, and is laid around the lower socket.

Next, a method of erection using such a shoe 10 will be described.

First, as shown in FIG. 6, a head 12a is introduced into a groove 14d in a girder which has been carried into the site and which has been previously buried so that the upper socket 14 is opened to the lower surface, and is inserted into the upper socket 14. The upper fixing member 12 is inserted.

Next, after the head 12a reaches the enlarged diameter portion 14b, as shown in FIG.
Rotate degrees. When rotated, the head 12a is hooked on the upper surface of the reduced diameter portion 14c as shown in FIGS.
1 is fixed to the pretend girder G. 8 shows the state before rotation, and FIG. 9 shows the state after rotation.

Next, as shown in FIG. 10, a hardening material such as mortar or concrete is poured into the lower socket 15.

Next, as shown in FIG. 11, the lower fixing member 13 is installed so as to be inserted into the lower socket 15 into which the hardening material has been cast. At this time, the lower fixing member 13 is temporarily supported on a pedestal or the like (not shown) having a suitable height such that the lower fixing member 13 is at a suitable vertical position in the lower socket 15. In addition, the lower socket 15 is installed without a box at the installation portion on the upper surface of the lower structure P, and is fixed in advance by casting concrete.

After the hardening material has hardened, the pedestal G is erected on the lower structure P by removing the pedestal and the like.

The shoe, the girder, and the method of erection using the shoe according to the first embodiment are configured as described above.
The following effects are achieved.

Since the upper steel plate, lower steel plate, sole plate and base plate in the prior art are not required, the weight can be reduced. Also, the shoe 10 can be fixed to the spar just by inserting and rotating it, not by bolting. as a result,
According to the present embodiment, it can be easily attached to the lower surface of the girder.

Further, since there is no upper steel plate or the like, the manufacturing cost can be reduced. Estimates have shown that manufacturing costs can be reduced by more than 30%.

Further, since a sole plate or the like is not required, the gap between the beam and the lower structure P can be reduced.

Further, since the number of members is smaller than that of the prior art, the cost can be reduced.

(Second Embodiment) As shown in FIG. 16, a shoe 50 according to a second embodiment also supports a so-called pretend girder G used for a road bridge or the like. The shoe 10 according to the first embodiment is different in that the portion buried in the lower structure P is two pieces, whereas the shoe 50 according to the second embodiment is one piece. That is, there is no thing corresponding to the lower socket in the second embodiment.

The lower fixing member 53 according to the second embodiment
As shown in FIG. 17, a plurality of flanges (protrusions) 53a are integrally formed on the outside with a casting.

At the upper end of the lower fixing member 53, a projection 53b fixed to the shoe body 51 is provided.

An external thread is cut on the outer surface of the projection 53b.
The shoe body 51 is screwed to a lower steel plate in the laminated rubber.

The upper socket 54 also differs from that of the first embodiment in that a plurality of flanges (projections) 54a are integrally formed on the outside as shown in FIG. Further, the outer diameter of a portion where the upper fixing member 12 is inserted is larger than other portions.

The other components are the same as those according to the first embodiment.

Next, a method of erection using the shoe 50 will be described.

The steps up to the attachment of the shoe 50 to the pretend girder G are the same as those of the first embodiment.

Next, as shown in FIG. 19, the empty box provided at the upper end of the lower structure P is removed and the pretend girder G is removed.
Is lowered so that the lower fixing member 53 of the shoe 50 attached to the bottom is inserted. The lower fixing member 53 is temporarily supported on a pedestal or the like having a suitable height so that the lower fixing member 53 is at a suitable vertical position in the box.

Next, as shown in FIG. 20, after the hardening material is poured into the box punch and hardened, the pedestal and the like are withdrawn to complete the erection.

Since the shoe 50 and the method of erection thereof according to the second embodiment are configured as described above, the following effects can be obtained in addition to the effects according to the first embodiment.

Also, since the lower fixing member 53 is one piece, the number of members is small, and the shoe 50 can be manufactured at lower cost than in the first embodiment.

The upper socket 54 and the lower fixing member 53
Since the flanges 53a and 54a are provided on the fins, the work of arranging reinforcing bars around them can be eliminated. In addition, the work of fixing the lower socket to the empty box becomes unnecessary. As a result, the construction labor can be further reduced, the construction time can be shortened, and the construction cost can be reduced.

(Third Embodiment) As shown in FIGS. 23 to 25, an upper socket 64 according to the present embodiment
It has a substantially cylindrical outer contour. The outer surface has a flange (projection 64
a) is provided in a plurality of stages, and a flange (projection 64a) is also provided in the vertical direction.
Is provided. As in the first embodiment, the enlarged diameter portion 64b and the reduced diameter portion 64c are provided inside the lower end portion. A stopper 64d is provided on the upper surface of the reduced diameter portion 64c. The stopper 64d is provided so as to close the enlarged diameter portion 64b. In FIG. 24, the knitted portion is the stopper 64d. In the present embodiment, the stopper 64d has a columnar shape having a sector shape in a plan view, and
Although it is formed integrally with the upper surface of 4c, it can be provided by fixing a separate body. A tapered portion 64b is attached to the inner diameter side bottom surface of the reduced diameter portion 64c. As shown in FIGS. 27 to 29, a similar taper 62b is provided on the upper surface of the upper fixing member 62. The lower end is threaded externally.

When the engaging portion 62a of the upper fixing member 62 is inserted into the enlarged diameter portion 64b as shown in the upper diagram of FIG. 30 and the upper fixing member 62 rotates around the axial direction, As shown in the figure below, rotation is disabled for a predetermined angle or more. When the upper socket 64 according to the third embodiment is used, the following effects can be obtained in addition to the effects of the above-described embodiment. That is, since the upper fixing member 62 only needs to be rotated around the axial direction until it stops, the work of attaching the shoe body to the girder can be performed without any care, and the attachment can be reliably performed. In addition, since the tapered portions 62b and 64e are provided on the upper surface of the reduced diameter portion 64c of the upper socket 64 and the upper fixing member 62, the operation of inserting the upper fixing member 62 into the reduced diameter portion 64c of the upper socket 64 is easily performed. be able to.

In the above embodiment, the present invention is applied to the pretend girder G, but the present invention is not limited to this.
For example, it can be applied to a posten girder or other precast girder. It can also be applied to cast-in-place girders.

In the above embodiment, the upper fixing member is used. For example, the upper fixing member 2 shown in FIGS.
2 and one such as the upper fixing member 32 shown in FIG.
The present invention can be applied to a fixing member having a suitable number of hooks for implementing the present invention.

For example, the upper socket 4 shown in FIG.
As in 4, the reduced diameter portion 44c does not have to be continuous from the lower end of the upper socket 44, and may have any shape such as a gradual decrease such that the hook portion can be hooked.

The number, position, shape, and the like of the above-mentioned constituent members are not limited to the above-described embodiment, but can be set to a number, position, shape, and the like suitable for implementing the present invention. In the drawings, the same components are denoted by the same reference numerals.

[0051]

Since the present invention is configured as described above, the following effects can be obtained. Since the upper steel plate, the lower steel plate, the sole plate, and the base plate in the prior art are not required, the weight can be reduced. The shoe can be fixed to the girder just by inserting and rotating it, not by bolting. Therefore, according to the present invention, the shoe can be easily attached to the lower surface of the girder. Since there is no upper steel plate in the prior art, the cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional side view showing a state in which a shoe according to a first embodiment of the present invention is installed.

FIG. 2 is a side view of an upper fixing member of the shoe shown in FIG.

FIG. 3 is a front view of an upper fixing member of the shoe shown in FIG. 1;

FIG. 4 is a side longitudinal sectional view of the upper socket of the shoe shown in FIG. 1;

FIG. 5 is a front vertical sectional view of the upper socket of the shoe shown in FIG. 1;

FIG. 6 is a process drawing (partially sectional side view) showing a method of erection using the shoe shown in FIG. 1;

FIG. 7 is a process drawing (partially sectional side view) showing a method of erection using the shoe shown in FIG. 1;

FIG. 8 is a process diagram (horizontal sectional view) showing a method of erection using the shoe shown in FIG.

9 is a process diagram (horizontal sectional view) showing a method of erection using the shoe shown in FIG.

FIG. 10 is a process diagram (longitudinal sectional side view) showing a method of erection using the shoe shown in FIG. 1;

FIG. 11 is a process drawing (partially sectional side view) showing a method of erection using the shoe shown in FIG. 1;

FIG. 12 is a side view of an upper fixing member according to another embodiment of the present invention.

13 is a horizontal sectional view of the upper fixing member and the upper socket shown in FIG.

FIG. 14 is a horizontal sectional view of an upper fixing member and an upper socket according to another embodiment of the present invention.

FIG. 15 is a longitudinal sectional view of an upper socket according to another embodiment of the present invention.

FIG. 16 is a partial cross-sectional side view showing a state where a shoe according to a second embodiment of the present invention is installed.

17 is a side view of the lower fixing member of the shoe shown in FIG.

FIG. 18 is a side view of the upper socket shown in FIG.

FIG. 19 is a process diagram (horizontal sectional view) showing a method of erection using the shoe shown in FIG. 16;

20 is a process chart (horizontal sectional view) showing a method of erection using the shoe shown in FIG.

FIG. 21 is a construction process diagram according to the related art.

FIG. 22 is a construction process diagram according to the related art.

FIG. 23 is a plan view of an upper socket according to a third embodiment of the present invention.

24 is a sectional view taken along line XX of FIG.

25 is a sectional view taken along line YY of FIG.

26 is a bottom view of the upper socket shown in FIG.

FIG. 27 is a plan view of an upper fixing member according to a third embodiment of the present invention.

FIG. 28 is a front view of the upper fixing member shown in FIG. 27;

FIG. 29 is a side view of the upper fixing member shown in FIG. 27.

FIG. 30 is a process diagram (FIG. 24) showing the mounting operation of the shoe body.
AA sectional view of FIG.

[Explanation of symbols]

 G Pretend girder P Lower structure 10 shoe 11 shoe body 12, 22, 32 upper fixing member 12a, 22a, 32a head (hook) 13 lower fixing member 14, 44 upper socket 14b enlarged diameter portion 14c, 44c reduced diameter portion 14d groove 15 lower socket 50 shoe 51 shoe body 53 lower fixing member 53a flange (projecting portion) 53b convex portion 54 upper socket 54a flange 62 upper fixing member 62a hook portion 62b taper 64 upper socket 64a projection 64b enlarged diameter portion 64c shrinkage Diameter 64d Stopper 64e Taper

────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] February 2, 2000 (200.2.2)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction contents]

[Claims]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0001

[Correction method] Change

[Correction contents]

The present invention particularly relates to a pretensioned girder ( pretensioner).
The present invention belongs to a shoe and a girder suitable for use as a girder, and a method of erection using the shoe.

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0010

[Correction method] Change

[Correction contents]

[0010] The gist of the invention according to claim 1 is a shoe for supporting a girder used for a road bridge or the like, the shoe body being interposed between the girder and a lower structure and capable of being deformed in a horizontal direction. An upper fixing member having a lower portion fixed to the shoe body and a hook portion formed at an upper portion; a lower fixing member having an upper portion fixed to the shoe body; An enlarged diameter portion whose inner diameter is enlarged so that the hooking portion can rotate, and at least a lower portion of the enlarged diameter portion is a reduced diameter portion whose diameter is reduced so that the engaging portion can be hooked. the a, the the fused diameter portion having grooves and continuous as possible introducing the hook portion leads to said expanded diameter section, the example Bei over socket that is fixed to the digit lower surface, the upper
A shoe characterized in that a fixing member and a lower fixing member are screwed to the shoe body . The gist of the invention described in claim 2 is that the upper fixing member is screwed to the shoe body with a T-bolt, and the groove of the upper socket is provided on the opposite side in the radial direction. In the shoe. The gist of the invention according to claim 3 resides in the shoe according to claim 1 or 2, wherein a protrusion is provided on an outer surface of the upper socket. The gist of the invention according to claim 4 resides in the shoe according to claim 3 , wherein the protrusion is formed by fixing a reinforcing bar to an outer surface of the upper socket. The gist of the invention according to claim 5 resides in the shoe according to claim 3 or 4, wherein the protrusion is formed in a flange shape on an outer surface of the upper socket. The gist of the invention according to claim 6 is that the upper socket is
The shoe according to any one of claims 1 to 5, wherein an outer diameter of a portion where the upper fixing member is inserted is larger than other portions. The gist of the invention according to claim 7 resides in the shoe according to any one of claims 1 to 6, wherein the upper socket is a casting. Claim 8
The gist of the invention described in the invention is that a stopper, into which a hook portion of the upper fixing member is inserted into an enlarged diameter portion of the upper socket, and which prevents the upper fixing member from rotating about a predetermined angle or more around an axial direction, is provided with a stopper. The shoe according to any one of claims 1 to 7, wherein the shoe is provided on an upper surface of the diameter portion. The gist of the invention according to claim 9 is that a projection is formed on an outer surface of the lower fixing member.
9. The method according to claim 1, further comprising:
Exist in the shoe described in either. The gist of the invention according to claim 10 is that the protrusion has a reinforcing bar on an outer surface of the lower fixing member.
2. The fixing device according to claim 1, wherein the fixing member is fixed.
A shoe according to claim 9. Claim 1
The gist of the invention described in 1 is that the protrusion is provided on the lower fixing member.
A collar is formed on the outer side surface.
A shoe according to any one of claims 1 to 10. The gist of the invention according to claim 12 is that the lower fixing member is a casting.
The method according to any one of claims 1 to 11, wherein
Exists in the described shoe. Summary of the Invention of claim 13 wherein the total
A lower socket that is fixed to the lower structure,
The lower fixing member is inserted into the lower socket, and the lower socket is fixed.
9. The method according to claim 1, wherein
There is in the shoe described in. The gist of the invention described in claim 14 is that
An installation using the shoe according to any one of claims 1 to 12.
A method, wherein the upper socket is previously brought into the site,
Is embedded in the girder so that it opens on the lower surface,
The upper fixing member is inserted into the upper socket while introducing a hook.
After the hook arrives at the enlarged diameter portion, the
By rotating the upper fixing member around the circumferential direction, the upper surface of the reduced diameter portion
To lock the shoe body to the girder.
And removing the lower fixing member by removing a box opened on the upper surface of the lower structure.
Lower the girder to which the shoe is fixed so that
The present invention resides in a method of erection characterized by casting a material. The gist of the invention according to claim 15 is that the shoe according to claim 13
The erection method used was carried over to the site
The above-mentioned girder buried so that the socket opens to the lower surface,
The upper portion is inserted into the upper socket while introducing the latch portion into the groove.
The fixing member was inserted, and the engaging portion reached the enlarged diameter portion.
Then, the upper fixing member is rotated around the circumferential direction to reduce the diameter.
Hook the hook on the upper surface of
After setting a hardening material in the lower socket,
So that the lower fixing member enters the lower socket.
Lowering the girder to which the girder is fixed
Exists. The gist of the invention described in claim 16 is that of claim 1
The socket according to any one of the chairs 8 above. The gist of the invention described in claim 17 is that any of claims 11 to 12
In the lower fixing member described in the crab. The gist of the invention according to claim 18 is that the upper socket according to claim 16 is buried.
It is in the digit characterized by the above.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0043

[Correction method] Change

[Correction contents]

That is, the lower fixing member 53 is
Since it has the function of
Also, the number of parts is small, and the shoe 50 can be manufactured more inexpensively.

[Procedure amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0047

[Correction method] Change

[Correction contents]

[0047] In the above embodiment has been applied to Pureten digit (pretension digits) G, but the present invention is not limited thereto, for example, Posten digit (Posutoten
) And other precast digits. It can also be applied to cast-in-place girders.

Claims (20)

[Claims] 1. A shoe for supporting a girder used for a road bridge or the like, comprising a horizontally deformable shoe body interposed between the girder and a lower structure, and a lower part fixed to the shoe body. An upper fixing member having an engaging portion formed on an upper portion, and a lower fixing member having an upper portion fixed to the shoe body. The engaging portion of the upper fixing member is rotatable as a whole. The enlarged diameter portion has an enlarged diameter, and at least a lower portion of the enlarged diameter portion has a reduced diameter portion reduced in diameter so that the engaging portion can be hooked. Has a continuous groove leading to the enlarged diameter portion and capable of introducing the engaging portion,
A shoe comprising: an upper socket fixed to a lower surface of the girder. 2. The shoe according to claim 1, wherein the upper fixing member is screwed to the shoe body with a T-bolt, and a groove of the upper socket is provided on a radially opposite side. 3. The shoe according to claim 1, wherein a protrusion is provided on an outer surface of the upper socket. 4. The shoe according to claim 3, wherein the protrusion is formed by fixing a reinforcing bar to an outer surface of the upper socket. 5. The projection according to claim 3, wherein the projection is formed in a flange shape on an outer surface of the upper socket.
The shoe described in any of the above. 6. The shoe according to claim 1, wherein an outer diameter of a portion of the upper socket into which the upper fixing member is inserted is larger than other portions. 7. The shoe according to claim 1, wherein the upper socket is a casting. 8. A stopper through which a hooking portion of the upper fixing member is inserted into the enlarged diameter portion of the upper socket, and the upper fixing member cannot rotate around the axial direction by a predetermined angle or more,
The shoe according to any one of claims 1 to 7, wherein the shoe is provided on an upper surface of the reduced diameter portion. 9. The shoe according to claim 1, wherein a convex portion fixed to the shoe body is provided at an upper end of the lower fixing member. 10. An external thread is cut on an outer surface of the projection, and is screwed to the shoe body.
The shoe according to any one of the above items 9 to 9. 11. The shoe according to claim 1, wherein a projection is provided on an outer surface of the lower fixing member. 12. The shoe according to claim 1, wherein the protrusion is formed by fixing a reinforcing bar to an outer surface of the lower fixing member. 13. The shoe according to claim 1, wherein the protrusion is formed in a flange shape on an outer surface of the lower fixing member. 14. The shoe according to claim 1, wherein the lower fixing member is a casting. 15. The apparatus according to claim 1, further comprising: a lower socket fixed to a lower structure, which has a cylindrical shape as a whole, wherein the lower fixing member is inserted and fixed in the lower socket. The shoe described in Crab. 16. A erection method using the shoe according to claim 1, wherein the spar carried into the site and previously embedded so that the upper socket is opened to the lower surface is provided. Inserting the upper fixing member into the upper socket while introducing the engaging portion into the groove, and after the engaging portion reaches the enlarged diameter portion, rotating the upper fixing member around the circumferential direction, The shoe body was fixed to the girder by hooking the hooking portion on the upper surface of the reduced diameter portion, and the shoe was fixed so that the lower fixing member could be inserted into a box opening opening on the lower structure upper surface. A method of erection, wherein the girder is lowered and a hardening material is cast. 17. The method of erection using a shoe according to claim 15, wherein the hook is engaged with the groove on a spar carried into the site and previously embedded so that the upper socket is opened to the lower surface. After the upper fixing member is inserted into the upper socket while introducing the portion, the upper fixing member is rotated around the circumferential direction after the engaging portion reaches the enlarged diameter portion, and the upper surface of the reduced diameter portion is rotated. Then, the shoe body is fixed to the girder by hooking the hook portion, and a hardening material is poured into the lower socket. Then, the shoe is mounted so that the lower fixing member enters the lower socket. A method for erection, wherein the fixed girder is lowered. 18. The upper socket according to claim 1, wherein: 19. The lower fixing member according to claim 9, wherein: 20. A girder, wherein the upper socket according to claim 18 is buried.