JPH1113020A - Carrying-in method of supporting device for abutment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To rapidly and safely carry in a new supporting device into an installation place of narrow space between an upper part of an abutment and a lower surface of a girder by a small number of workers in replacement work of the supporting device for abutment. SOLUTION: A guide rail 26 which is passed below the lower side of a girder and extended in the direction orthogonal to the bridge axis, a supporting device 5 having a base plate is suspended from an upper part and mounted on a suspended carriage frame 38 which is suspended through a trolley 35 traveling along the guide rail 26, the supporting device 5 having the base plate is transferred onto an elevating/lowering base of a truck 40 having an elevator traveling along the rail 26 arranged in the bridge axis direction across the traveling passage of the suspended carriage frame 38, and an upper part of the supporting device 5 is fixed to a sole plate. The filling concrete is filled in a chipped recessed part 15 so that a lower anchor bolt 22 which is temporarily supported by the base plate 21 fitted to the supporting device 5 is embedded.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a method for replacing a new bearing device with an old bearing device such as a metal shoe and a rubber shoe in various bridges such as a continuous box girder bridge. And a method for carrying in a temporary receiving jack.

[0002]

2. Description of the Related Art In a continuous box girder bridge, a bridge girder is generally supported on a pier or an abutment via a bearing device such as a metal shoe or a rubber abutment, but this bearing device has reached the end of its useful life. In case or lessons learned from the recent Great Hanshin-Awaji Earthquake, in preparation for a future large earthquake, replace the metal shoe with a new rubber shoe,
Similarly, bridges nationwide have been re-examined, such as replacing old rubber shoes with new rubber shoes, and replacement work of bearing devices has been carried out sequentially, and the scale of this replacement work is expected to increase in the future.

A shoe for supporting a bridge girder (hereinafter referred to as a bearing device)
When replacing the temporary abutment jack, carry the temporary abutment jack to the top of the abutment, temporarily hold the bridge girder in a state where it is lifted using this temporary abutment jack, and then temporarily attach the temporary abutment members such as square timbers and blocks to the top of the abutment and the abutment girder. Then, the temporary receiving jack is removed and the temporary receiving jack is removed between the temporary receiving jack and the temporary receiving member. Then, with the bridge girder temporarily held by the temporary receiving member, the existing bearing device is separated from the lower surface of the bridge girder and the upper end surface of the abutment, and then removed from the upper end surface of the abutment. And the lower part of the bridge girder, and the bearing device is replaced.

[0004]

When replacing a bearing device, a new bearing device is loaded onto the abutment located at the end of the bridge girder, because the bearing device has a weight of 100 tons or more. Since the work is performed in a narrow space between the upper surface of the abutment and the lower surface of the bridge girder, it is extremely difficult to carry the work to the installation location of the conventional bearing device, requiring a lot of work time, many workers, and dangerous work. there were.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and to provide a method capable of carrying a heavy bearing device into a narrow space under a bridge girder and an abutment safely and smoothly with as few workers as possible. With the goal.

[0006]

According to the present invention, there is provided a method for carrying a bearing device for supporting a bridge girder between the upper surface of an abutment and the lower surface of a bridge girder, the method comprising: A guide rail extending in the direction perpendicular to the bridge axis by passing through the lower surface of the bridge girder by being supported by the side wall of the bridge girder and the upper slab side wall, and suspended by a trolley running along the guide rail. A mounting device with a base plate is suspended from above and mounted on the lowered transport frame, and the suspended transport frame is moved to the front of the opening located in the bridge axis direction of the filet recess formed in the abutment, temporarily stopped, and then stopped.
The suspension platform is arranged in the bridge axis direction intersecting with the runway of the suspended transport frame, and the tip extends on the bottom surface of the filet recess and travels along a rail reaching to the inside thereof. Transfer the bearing device with the base plate,
After moving the bogie to the shank recess, the upper part of the support device supported by the elevating platform is fixed to a sole plate previously attached to the lower surface of the bridge girder via an anchor bolt via bolts. Is lowered to remove the bogie from the shank recess, and the rail is removed from the shank recess. Is filled with concrete for filling. Further, in the present invention, the hanging transport frame includes a horizontal suspending frame formed in a U-shape or a square whose one side is detachable, as viewed from a plane, so that a side opposed to the opening front surface of the filet recess is opened. On a horizontal suspension frame, a support device with the lower anchor bolt is mounted, and inside the horizontal suspension frame, the lifting platform of the bogie with the elevator is lifted, so that the support device is moved from the suspended transport frame to the bogie. It is characterized by being transferred to a lifting platform.

According to the present invention, the base plate suspended from the road side and the supporting device with the temporarily anchored lower anchor bolts suspended from the road side are suspended by the suspension conveyance frame, and the trolley is used to move the base plate at right angles to the bridge axis along the guide rail. It moves to the opening front facing the bridge axis direction of the shank recess for the installation of the lower anchor bolt formed on the abutment, and then is mounted on a bogie with a lift that moves in the bridge axis direction and enters the shank recess. Transfer and install, then raise the elevator and fix the upper part of the bearing device to the sole plate that is pre-installed on the underside of the bridge girder. It can be carried to the installation location on the top of the abutment quickly and in a short time.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIGS. 1 to 16 show an embodiment of a method for carrying a bearing device onto an abutment as an embodiment of the present invention.

FIG. 1 shows an overall view of a continuous box girder bridge as a specific example of a structure supported by a bearing device (a shoe). For example, a fixed space is provided on a ground 1 such as a river. A plurality of bridge piers 2 and abutments 3 are erected, and a bridge girder (box girder) 6 is supported by a supporting device 5 such as a metal shoe or a rubber shoe installed on the upper part 4 of the bridge pier 2 and the abutment 3.

FIG. 2 is an enlarged cross-sectional view of a portion A in FIG. 1, FIG. 3 is an enlarged partial side view of FIG. 2, and FIG. 9 is a side view of FIG.

In FIG. 2, two bearing devices 5 and 5 are arranged side by side in the direction perpendicular to the bridge axis on the upper surface 7 of the abutment upper portion 4. In the following description, the bearing device 5 installed on the right side of the figure will be described.
The following describes an example in which a loading operation is performed on a staging 7 installed from the ground 1 to a height position of the abutment upper part 4.

Prior to the description of the procedure for carrying in the bearing device 5 of the present invention, the bearing device 5 includes the abutment 3 and the box girder 6.
The general work process of removing the old bearing device 5 from the abutment 3 and carrying in the new bearing device, and the processing process of the upper abutment 4 at that time will be described with reference to FIGS. .

The bearing device 5 has a known structure, that is, a metal upper mounting plate and a lower mounting plate are mounted on the upper and lower sides of the laminated rubber, and a bolt insertion hole of a sole plate 20 mounted on the upper mounting plate is provided. Lower slab 16 of box girder 6 in advance
The upper end of the bearing device 5 and the box girder 6 are fixed by inserting the lower end portion of the anchor bolt of a predetermined length implanted in the nut and fastening with a nut.

Further, the upper end of a predetermined length of anchor bolt 22 to be implanted in the upper portion 4 of the abutment is inserted into a bolt insertion hole of a base plate mounted on a lower mounting plate of the support device 5 and fastened with a nut. And the abutment 3 are fixed via the shoe seat 39.

In order to remove the old bearing device from the upper abutment 4 when replacing the old and new bearing devices in the bearing device 5 installed between the abutment 2 and the box girder 6 by the above-described mounting structure, FIGS. This is performed according to the procedure shown in FIG.

In FIGS. 17 (A) and 17 (B), which are shown as the first working process of disassembly of the bearing device, in order to install a temporary support (temporary shoe) / jack jack base 8 shown in FIG. Is carried out, and the cradle bracket 10 is set on the razor 9 by concrete casting. Subsequently, an uneven land adjustment work is performed in which the concrete jack receiving portion 11 on the lower surface of the box girder and the upper surface of the abutment provided when the old bearing device is installed is removed.

Next, as shown in FIG. 18, a temporary receiving jack 12 is set on a jack base 8 installed on the abutment upper part 4 and the base bracket 10, and the reaction force of the load of the box girder 6 is transmitted from the supporting device 5. Shifted to the temporary receiving jack 12 and the current bearing (Kutsu)
Is checked for looseness of the bolt relation, and the temporary receiving jack 12 is also used as a temporary bearing.

Next, as shown in FIGS. 19 and 20, the wire between the sole plate (upper shoe) and the box girder 6 and between the base plate (lower shoe) and the upper abutment 4 are cut with a wire saw. The bearing device 5 is removed. It should be noted that the old bearing device is cut into small parts with a wire saw as much as possible, taking into account the carrying out.

Next, as shown in FIGS. 20 and 21, the filer of the abutment anchor installation portion 13 and the anchor bolt 22
Is removed, and a filer (filer position 15a) is formed to a predetermined position where the newly installed bearing anchor bolt is to be planted and the installation portion, thereby forming a filer recess 15.

Next, as shown in FIG. 21, unevenness of the anchor bolt cutting portion of the sole plate of the bearing device 5 is adjusted. This completes the removal of the old bearing device.

The assembly of the new bearing device is performed according to the procedure shown in FIGS. First, after removing the old bearing device, the lower slab 16 of the bridge girder 6 is drilled with the anchor hole 17 as shown in FIG. After drilling the anchor hole, the upper anchor bolt 18 is inserted into the anchor hole 17 and fixed by resin injection.

Next, as shown in FIG. 23, after fixing the upper anchor bolt 18, the sole plate 20 is set with the anchor nut 14, and fixed at a predetermined position. The gap between the lower surface of the box girder 6 and the sole plate 20 is filled with resin, mortar, or the like.

Next, as shown in FIG. 24, after the sole plate 20 is fixed, the new bearing device (rubber shoe) 5 and the base plate 21 are laid on the sole plate 20 in advance. Subsequently, a grounded structure of the sole plate 20, the support device 5, and the base plate 21 is fixed at a predetermined position by a pitch plate and a set bolt.

Next, as shown in FIG. 25, the lower anchor bolts 22 are attached (refer to FIG. 24 for assembling procedures).
At the time of the illustrated work process, setting is performed when it can be attached to the bed plate 21).

Next, as shown in FIG. 26, after the lower anchor bolt 22 is attached and fixed, concrete is poured into the filed recess 15. Subsequently, after the concrete is cast, the non-shrink mortar of the shoe seat 39 is cast. After placing the non-shrink mortar, the temporary support / jack 12 is removed to complete.

According to the present invention, as described above, after removing the old bearing device from the abutment upper portion 4, the new bearing device 5 is installed on the abutment upper portion 4 as described above, and the box girder 6 and the abutment upper portion 4 are connected to each other. There is a new feature in the method of carrying the new bearing device 5 into the narrow space between the upper part 4 of the abutment and the box girder 6 in order to fix the new bearing device 5.
(Note that the method of the invention is equally applicable for removing old bearings from the upper abutment 4).

The carrying-in process of the new bearing device 5 will be described in order with reference to FIGS. 2 to 16. As shown in FIG. 2, the abutment 3 is generally located on the shore of a river or on a bank, so that In order to carry in the work of loading the bearing device in the upper part, unlike the suspension scaffold in the case of the pier 2 erected under the water of the river, the ground 1 such as a shore or a dike can be used. In this ground 1, the vertical pipe 23a and the horizontal pipe 2
Assembling the staging 23 with 3b and the reinforcing pipe 23c,
At the upper end of the staging 23, a horizontal vertical frame 24 and a horizontal horizontal frame 25 are assembled, and a temporary floor 29 is assembled on the horizontal vertical and horizontal frames 24, 25. it can.

More specifically, FIGS. 2 and 9 show a method of loading and installing a new bearing device 5 into a recess 15 formed in the upper portion of the abutment 3 after the old bearing device is removed from the upper portion of the abutment 3. The details are shown.

First, in FIGS. 2 and 9, on the lower surface of the lower slab 16 of the box girder 6, two parallel guide rails 26 made of H-shaped steel are provided extending in the direction perpendicular to the bridge axis. . In other words, the two guide rails 26 are connected by a plurality of horizontal connection frames 27a, 27b, 27c fixed on the upper surface thereof at a predetermined interval, and are connected to the first and second connection frames 27a, 27b. At each end, a support frame 28 is provided.
8 is fixed to both side walls 30 of the box girder 6 at right angles to the bridge axis using an anchor member 60. Further, at both ends of the third connection frame 27c, suspended steel materials 31 whose upper sides are expanded and inclined to each other are fixed, and the upper end of the suspended steel materials 31 is above the box girder 6 having the road 33 formed on the upper surface. The slab 32 is fixed to a side wall 34. Therefore,
The guide rail 26 includes a support frame 28 and a suspended steel material 31.
Thus, the box girder 6 is firmly provided horizontally on the lower surface of the box girder 6 so as to support a large load.

Each of the right and left sides along the guide rail 26
A trolley 35 having a total of four sets of traveling wheels is provided, and a horizontal hanging frame 37 is provided at the lower end of four hanging frames 36 hanging from the trolley 35, which are squarely assembled in a plan view. A hanging transport frame 38 is configured. The horizontal suspension frame 37 of the suspension conveyance frame 38
As shown in FIGS. 5 to 8, on the front side and the rear side in the traveling direction, a substantially inverted gate-type frame 56 extending between the left and right trolleys 35, and a connecting bar connecting the front and rear inverted-gate type frames 56. At 57, it is configured to be removably assembled in a quadrangle when viewed from a plane. More specifically, the upper ends of the upright frames 56b at both ends of the horizontal frame 56a of the inverted gate type frame 56 are suspended and supported via connecting pins 58.
In the left and right trolleys 35 arranged in parallel, a connecting bar 57 is provided between the left and right front and rear standing frames 56b, 56b.
Are detachably provided via a connecting pin 59.

The suspension conveyance frame 38 is provided at one end (right side in FIG. 2) 26a of the guide rail 26 along the direction perpendicular to the bridge axis.
To the other end (left end in FIG. 2) 26b. When the suspended transport frame 38 moves to one end 26a of the guide rail 26, the new bearing device 5 is suspended from the upper road 33 using a crane (not shown), and the horizontal transport of the suspended transport frame 38 is continued. Put on the frame 37.

The new bearing device 5 has a well-known structure, and is configured by fixing upper and lower support plates above and below elastic rubber. A sole plate 20 and a base plate 21 are fixed to the upper and lower support plates, and a bolt insertion hole of the sole plate 20 is inserted into an upper anchor bolt 18 fixed to the lower slab 16 of the box girder 6 and locked by a nut. The upper part of the bearing device 5 is fixed to the lower slab 16 of the box girder 6. The lower and upper anchor bolts 22, which are inserted into the bolt insertion holes of the base plate 21 and fastened with nuts, are embedded in the abutment 3, so that the upper and lower portions of the bearing device 5 are fixed to the box girder 6 and the abutment 3.

As shown in FIG. 2, the support device 5 is provided with a lower anchor member 22 in a bolt insertion hole of the base plate 21.
Is suspended by a hanging transport frame 38 in a state where it is suspended by a nut. The sole plate 20 is previously attached to the lower slab 16 of the box girder 6 by the upper anchor bolt 18.
It is fixed by using. As shown in FIG. 2, the suspension conveyance frame 38 that suspends and supports the bearing device 5
When the vehicle runs along 6, the new bearing device 5 is formed on the top of the abutment 3 where the new bearing device 5 is to be installed (two adjacent ones located at a certain interval in the direction perpendicular to the bridge axis).
The position of the opening 5 side, that is, the position on the bridge axis direction side (river side) is moved in the direction perpendicular to the bridge axis. The user moves on the carriage 40 with the lift and moves into the filed recess 15.

The truck 40 and the parallel rail 46 are
As shown in FIG. 9, it is arranged on the upper surface of a temporary floor 29 provided above the staging 23. That is, the rail 46 has a chevron section at right angles to the longitudinal direction.
It is made of shaped steel, and is fixed to the upper surface of a vertically arranged frame 45 arranged in parallel. The left and right vertical frames 45 are connected by a plurality of horizontal frames 44, and the horizontal frames 4
4 is fixed to the upper surface of the temporary floor 29 provided above the staging 23 via the mounting bracket 61.

Each vertical frame 45 extends in the bridge axis direction on the temporary floor 29, and its tip (left end side in FIG. 9) 45a has a filet recess 15 formed in the upper part of the abutment 3. Extends above the bottom 15b, and its tip abuts against the rear standing wall 15c.

Next, as shown in FIGS. 13 to 15, the bogie 40 with a lift moving on the rail 46 is provided on the lower surface of the bogie frame 47, which is composed of a vertical frame 47a and a horizontal frame 47b, and is substantially rectangular in plan view. A total of four wheels 48 are attached to each other. An elevator lower frame 49 is fixed on the trolley frame 47, and the elevator lower frame 49 and the upper elevator 50 are connected by a support shaft 51.
The frame 52 is connected via upper and lower connection shafts 53 and 53 and guide wheels 54 and 54, respectively.
Is rotated about the support shaft 51 by a lifting / lowering fluid pressure cylinder 55, whereby the lifting table 50 can be raised and lowered.

When carrying the bearing device 5 to the installation location between the abutment 3 and the box girder 6, as shown in FIG.
3 to the base plate 21 using a crane (not shown).
The supporting device 5 is suspended and mounted on a suspended conveyance frame 38 which is moving to one end (right end) 26a of the guide rail 26 as shown in the figure. Subsequently, the hanging conveyance frame 38 on which the bearing device 5 is mounted is transferred along the guide rail 26, and the front surface of the opening of the filet recess 15 which is one of the installation locations (right side in FIG. That is, it is transported to the side position in the bridge axis direction and temporarily stopped at this position.

Next, as shown in FIG.
Rail 46 in a direction perpendicular to the runway (bridge axis direction)
The carriage 40 with the elevator moving along the
0, and stops once at the lower portion inside the horizontal suspension frame 37 of the suspension transport frame 38, which is stopped with the new bearing device 5 mounted thereon. Subsequently, the lift 50 is raised by the fluid pressure of the fluid pressure cylinder 55, and the new bearing device 5 is lifted from the suspended transport frame 38 and is transferred to the lift 50. At this time, the base plate 2 of the new bearing device 5
First, since the temporarily-supported lower anchor bolts 22 are provided in such a width that they are located on both sides of the elevator 50, the lower surface of the base plate 21 can be smoothly supported by the elevator 50 without hitting the elevator 50.

Next, with a slight time lag, the empty suspended conveyance frame 38 is moved along the guide rail 26 at one end 26 thereof.
Retreat to the a side.

Further, as shown in FIG. 9, the carriage 40 on which the bearing device 5 is mounted is advanced along the rail 46, and the bearing device 5 is positioned in the filet recess 15. In the above description, the horizontal suspending frame 37 having a rectangular shape in the plane of the suspending and transporting frame 38 is provided on the abutment 3 on which the bearing device 5 is installed.
The connection bar 57 on one side is detached by fitting the connection pin 59 or the like so that one side facing the opening of the opening 5 is opened, and the inverted gate type frame 56 is also provided so as to be detachable. The bearing device 5 transferred from the frame 38 to the carriage 40 can be smoothly advanced along the rail 46. In addition, by assembling the horizontal suspension frame 37 in a U-shape in which the opening side of the filet recess 15 is opened, the bearing device 5 on which the bogie 40 has moved can be smoothly transferred to the filet recess 15 side in the same manner as described above.

When the bearing device 5 is transferred into the filed recess 15, the bearing device 5 is supported at a predetermined height by the lifting platform 50.
Does not hit the bottom surface 15b of the filet recess 15.

The sole plate 20 is previously carried into the filed recess 15 using a carriage 40 with an elevator in a previous operation, and the upper anchor bolt 1 protruding from the lower surface of the box girder 6.
The lower end of the upper anchor bolt 18 is aligned by aligning the lower end of the upper anchor bolt 18 with the lower end of the upper anchor bolt 18 by driving the lifting / lowering hydraulic cylinder 55 to slightly raise the lifting / lowering table 50. The sole plate 2
0, and the nut 1 is inserted into the screw portion of the upper anchor bolt 18 projecting below the sole plate 20.
By fastening 9, the upper part of the bearing device 5 is fixed to the lower surface of the box girder 6. Then, the bearing device 5 with the base plate 21 carried into the filet recess 15 is the bogie 4.
0, and the upper part of the bearing device 5 is fixed to the lower surface of the sole plate 20 with bolts.
The bearing device 5 is temporarily supported on the lower surface of the box girder 6 as shown in FIG.

Subsequently, the carriage 40 with the elevating platform is retreated from the filed recess 15 along the rail 46. After that, the upper portion of the bearing device 5 is more reliably supported by an appropriate temporary support device, and The filling recess 15 is filled with filling concrete, and the lower anchor bolts 22 are buried therein.
Can be fixed to the upper abutment 4.

A carriage 40 with a lift equipped with the bearing device 5
The driving means for moving the rails along the rails 46 may be manually driven, but in the embodiment of the present invention, a manual winding winch is installed at the tip end of the rails 46, and the wire wound around the winch is locked to the carriage 40. Then, it is preferable to provide the bogie 40 on which the supporting device 5 having a capacity of 100 t is mounted with a small force by using the power of the machine so that the bogie 40 can be moved strongly and securely.

In the example shown in FIGS. 2 and 8, an example of loading a new bearing device in the replacement work of the right bearing device 5 among the two bearing devices 5 installed in the abutment upper portion 4 in the direction perpendicular to the bridge axis has been described. However, the work of carrying in a new bearing in the replacement work of the left bearing device 5 can be performed in exactly the same manner as described above, since the guide rail 26 extends to the setting recess 15 of the left bearing device 5. Further, in this case, the carriage 40 with the elevating platform and the rail 46 on which the carriage 40 moves may be moved from the right-side filet recess 15 to the left-side filet recess 15. In addition, the work of removing the old bearing device 5 from the abutment upper part 4 can be performed in the reverse procedure using the carriage 40 and the suspended transfer frame 38.

In the present invention, when carrying the bearing device 5 into the filed recess 15, the bearing device 5 is first moved in the direction perpendicular to the bridge axis by the hanging transport frame 38 that moves along the guide rail 26. 15 to the front side of the opening, and then the bearing device 5 is moved in the direction of the bridge axis by the carriage 40 with a lifting platform that moves along the rail 46, and is stored and moved in the deep portion inside the filet recess 15. The reason why the bearing device 5 is moved by the movement in two perpendicular directions is as follows. That is, the filet recess 15 has a substantially U-shape when viewed from a plane, and its opening is in the bridge axis direction (that is,
(In the middle of the bridge girder), and a temporary receiving jack base 8 and a temporary receiving jack 12 supported by the mounting stand are present in the direction perpendicular to the bridge axis of the filet recess 15, so that the temporary receiving jack base 8 is provided. This is because the support device 5 cannot be carried in only by one-way movement from the direction perpendicular to the bridge axis.

Further, the worker climbs up and down along a ladder (not shown) provided diagonally between the temporary floor 29 of the staging 23 and the ground 1 while using the temporary floor 29.
In addition, the replacement work of the old and new bearing devices is performed in a narrow space between the upper portion 4 of the abutment and the lower surface of the box girder 6.

[0048]

As described above, according to the present invention, when exchanging old and new bearings at the upper part of the abutment, a heavy-weight bearing device is suspended from the upper part of the bridge girder at a position substantially at the same height as the upper part of the abutment. , Mounted on a suspended transport frame that travels along the rail, and the suspended transport frame stops moving to the position in front of the opening of the filet recess where the new bearing device is to be installed, that is, the position on the side in the bridge axis direction. Then, at this position, it intersects with the runway of the suspended transport frame, travels in the direction of the bridge axis at right angles to this, and moves on a carriage with a lift platform that travels along a rail extending to the inside of the recess. By moving this bogie forward, the new bearing device can be carried into the narrow installation space above the abutment and the underside of the bridge girder, so that it is possible to carry the bearing device quickly and safely with a small number of operators and quickly and safely according to the manual. Excellent effect in practical use There is.

[Brief description of the drawings]

FIG. 1 is an overall view of a continuous box girder bridge.

FIG. 2 is an enlarged cross-sectional front detailed view of the portion shown in FIG. 1A, which is shown as an embodiment of the bearing device loading method of the present invention.

FIG. 3 is an enlarged side view of a right end portion of FIG. 2;

FIGS. 4A and 4B are a plan view and a front view of a guide rail.

FIG. 5 is an enlarged front view of a suspended conveyance frame.

FIG. 6 is a right side view of FIG.

FIG. 7 is an enlarged front view of a guide rail suspension frame.

FIG. 8 is a right side view of FIG. 7;

FIG. 9 is a right side sectional view of FIG. 2;

FIG. 10 is a partially enlarged view of FIG. 9;

FIG. 11 is a right side view of FIG.

12A, 12B, and 12C are a plan view, a front view including a cross-section, and a bottom view of a vertical frame for mounting a bogie rail.

FIG. 13 is a plan view of a bogie with a lift.

FIG. 14 is a front view of FIG.

FIG. 15 is a side view of FIG. 14;

FIG. 16 is a perspective view of a carriage with an elevator.

17A is a cross-sectional view of a support structure in a first operation step of removing a support device from an abutment, and FIG. 17B is a side cross-sectional view of a left support structure of FIG.

18A is a cross-sectional view of the support structure in the second operation step, and FIG. 18B is a side cross-sectional view of the left support structure of FIG.

FIG. 19A is a cross-sectional view of the support structure in the third operation step, and FIG. 19B is a side cross-sectional view of the left support structure of FIG.

20A is a cross-sectional view of the support structure in the fourth operation step, and FIG. 20B is a side cross-sectional view of the left support structure in FIG.

FIG. 21 (A) is a sectional view of a bearing structure in a fifth working step, and FIG. 21 (B) is a side sectional view of a left bearing structure in FIG. 21 (A).

22 (A) is a sectional view of a bearing structure in a first operation step of removing a bearing device from an abutment, and FIG. 22 (B) is a side sectional view of a left bearing structure of FIG.

FIG. 23A is a cross-sectional view of the support structure in the second operation step, and FIG. 23B is a side cross-sectional view of the left support structure of FIG.

24A is a cross-sectional view of the support structure in the third operation step, and FIG. 24B is a side cross-sectional view of the left support structure in FIG.

FIG. 25A is a sectional view of the support structure in the fourth operation step, and FIG. 25B is a side sectional view of the left support structure of FIG.

26A is a cross-sectional view of a support structure in a fifth operation step, and FIG. 26B is a side cross-sectional view of the left support structure of FIG.

[Description of Signs] 1 Ground 2 Bridge pier 3 Abutment 4 Upper part 5 Bearing device 6 Box girder 7 Staging 8 Jack part gantry 9 File part 10 Receiving bracket 11 Jack receiving part 12 Temporary receiving jack 13 Bridge part anchor part 14 Anchor nut 15 Parting recess 15a Separating position 16 Lower slab 17 Anchor hole 18 Upper anchor bolt 19 Nut 20 Sole plate 21 Base plate 22 Lower anchor bolt 23 Staging 24 Horizontal vertical frame 25 Horizontal horizontal frame 26 Guide rail 27a, 17b, 27c Connection frame 28 Support frame 29 Temporary Floor 30 Side walls 31 Suspended steel material 32 Upper slab 33 Road 34 Side wall 35 Trolley 36 Hanging hanging frame 37 Horizontal hanging frame 38 Hanging transfer frame 39 Shoes seat 40 Dolly with elevator 44 Side frame 45 Vertical frame 46 Rail 47 Rectangular frame 48 Wheel 49 Elevator lower frame 50 Upper elevating platform 51 Support shaft 52 X frame 53 Connecting shaft 54 Guide wheel 55 Elevating fluid pressure cylinder 56 Reverse gate type frame 56a Horizontal frame 56b Standing frame 57 Connecting bar 58 connecting pin 59 connecting pin 60 anchor member 61 mounting bracket

Claims (2)

[Claims] Claims: 1. Installed between an abutment upper surface and a bridge girder lower surface,
A method of carrying a bearing device supporting the bridge girder onto the upper surface of the abutment, wherein a guide rail extending in a direction perpendicular to the bridge axis through a lower surface of the bridge girder is provided by being supported on a side wall of the bridge girder and an upper slab side wall. A supporting device with a base plate is suspended from above on a suspended transport frame suspended via a trolley traveling along the guide rail, and the suspended transport frame is mounted on an abutment. It is moved to the front of the opening located in the axial direction, temporarily stopped, and then disposed in the bridge axis direction so as to intersect with the runway of the suspended transport frame, and the tip extends along the bottom surface of the filet recess and extends therefrom. The bearing device with the base plate is mounted on a lift platform of a bogie equipped with an elevator that travels along a rail that reaches the rail, and the bogie is moved to the shearing recess, and then anchored to the underside of the bridge girder. The upper part of the support device supported by the lift is fixed to a sole plate previously attached via a bolt via bolts, and then the lift is lowered to move the bogie out of the filer recess, and An abutment for a bearing device, comprising: removing a rail from a concave portion; and then filling the filling concave portion with filling concrete so that a lower anchor bolt temporarily supported on a base plate attached to the bearing device is embedded. How to carry in to the upper part. 2. The hanging transport frame includes a horizontal suspending frame which is formed in a U-shape or a square whose one side is detachable, as viewed from a plane, so that a side facing the opening front surface of the filet recess is opened. A supporting device with the lower anchor bolts is mounted on a horizontal suspension frame, and by raising the elevator of the bogie with the elevator inside the horizontal suspension frame, the supporting device is moved from the suspended transfer frame. 2. The method according to claim 1, wherein the bearing device is mounted on an elevator platform.