JP2013002143A - Installation device and installation method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an installation device and an installation method which can install a reinforcement member on the lower face side of an upper structure of a deteriorated bridge and others without applying a load at the time of construction.SOLUTION: An installation device 1 comprises a base 2, an elevating base 8 installed at the upper part of the base 2 so as to be elevated, elevating means 9 for elevating the elevating base 8, at least one pair of movable carriages 14 which are installed at the upper part of the elevating base 8 and which can move in the direction of nearing to each other by following the elevation of the elevation base 8 while moving in the direction of separating from each other by following the descent of the elevation base 8, and movable fixing means 22 which switches between the state in which the movable carriage 14 is moved at the upper part of the elevating base 8 and the state in which the movable carriage 14 is fixed at the upper part of the elevating base 8.

Description

  The present invention relates to an installation apparatus and an installation method, and more particularly to an installation apparatus and an installation method effective for installing a reinforcing member on the lower surface side of an existing water structure.

  In general, when a bridge or the like installed across a river or the sea for the passage of people or vehicles is reinforced by aging or corrosion, the bridge etc. in a state that allows passage of people or vehicles, etc. The upper structure (floor slabs, horizontal girders, vertical girders, etc.) is reinforced from the lower surface side.

  For example, a plurality of reinforcing girders are installed between the upper portions of two adjacent vertical girders on the lower surface side of an upper structure such as an existing bridge, and a filler is filled between the reinforcing girders and the upper structure floor slab. Thus, a reinforcing structure for reinforcing the upper structure from the lower surface side is constructed.

  Patent Document 1 describes a reinforcing structure configured to improve the corrosion resistance of a bridge structure by installing panels on the lower surface and side surface of the bridge body composed of the main girders and the like of the bridge structure. Has been.

The reinforcing structure described in Patent Document 1 is a concave joint formed by forming panels, which are long in the width direction and short in the direction of the bridge axis, on both ends in the short direction on the lower surface of the bridge body constituted by the main girder of the bridge structure. And the convex joints are fitted together, and vertical beams are arranged at intervals in the direction crossing the panel joints (bridge axis direction). Then, the vertical beam fixed to the panel is fixed to the horizontal beam arranged at appropriate intervals in the orthogonal direction, and this horizontal beam is supported on the lower flange of the main girder of the bridge by the support material. The lower panel cover is covered. Also, on the side of the bridge body, the upper end of the panel is fixed to the ground cover of the road shoulder of the bridge, the lower end is joined to the end of the panel of the bottom panel cover, and the middle is supported at one end by the bridge structure. The side panel cover is constructed by supporting the frame.

  By the way, in the method of installing a plurality of reinforcing girders between the upper parts of two adjacent vertical girders on the lower surface side of an existing superstructure such as a bridge, a guide rail is attached to the existing bridge, and a hoist crane is attached to the guide rail. Installed on the reinforcement part on the lower surface side of the superstructure by lifting the new reinforcement girder carried down below the reinforcement part of the bridge etc. with a hoist crane and moving the hoist crane along the guide rail ing.

  For this reason, the load at the time of construction by a hoist crane, a guide rail, etc. acts on the existing bridge etc., and there exists a possibility of having a bad influence on the existing bridge etc. In addition, it is necessary to remove the hoist crane, guide rails, etc. after installing the new reinforcement girder, and the work is performed in a narrow space formed between the upper structure after the installation of the new reinforcement girder. Because it has to be done using it, the work is very laborious.

  In addition, the reinforcing structure described in Patent Document 1 is provided with a hoist crane or the like attached to a bridge body of a bridge structure, and the hoist crane or the like is operated on a work stage provided on a pier or the like so that a bridge body or the like can be used. By lifting the panel that has been loaded below and moving the roller attached to the panel side along the guide rail attached to the bridge body while sequentially joining the panels on the work stage, the bridge shaft of the bridge body It is moved in the direction. For this reason, the load at the time of construction by a hoist crane, a guide rail, a traveling roller, etc. will act on a bridge structure, and there is a possibility of having a bad influence on a bridge structure. In addition, it is necessary to remove hoist cranes, guide rails, etc. after the panel is installed, and this operation must be performed using a narrow space formed between the bridge body after the panel is installed. Therefore, the work is very troublesome.

JP 2004-324230 A

  The present invention has been made in view of the above-mentioned conventional problems, and is a reinforcing member that reinforces an aged water structure from the lower surface side without applying a load during construction to the aged water structure. It is an object of the present invention to provide an installation device and an installation method that can be installed easily.

In order to solve the above problems, the present invention employs the following means.
That is, the present invention is provided with a base, a lift provided on the top of the base so as to be movable up and down, a lifting means for moving the lift up and down, an upper part of the lift and the lift of the lift At least a pair of movable bases that can move in a direction approaching each other and follow the lowering of the lifting platform, and a state in which the movable platform is moved above the lifting platform And a movement fixing means for switching to a state of fixing to the upper part of the lifting platform.

According to the installation apparatus of the present invention, for example, two reinforcing members are placed on the upper part of the pair of moving bases, and the lifting base is moved up and down by the lifting means to follow the lowering of the lifting base. The distance between the two reinforcing members at the upper part of the moving table can be adjusted by moving the moving table in a direction away from each other.
Therefore, the reinforcing member can be lifted once and the interval between the reinforcing members can be expanded while the reinforcing member is lowered, so that two reinforcing members are provided between the upper portions of two adjacent vertical beams of the bridge upper structure. This can be applied to the case where members (reinforcing girders) are installed at predetermined intervals.

  In the present invention, the elevating means crosses the first arm and the second arm in an X shape and connects both the arms so as to be rotatable about the intersecting portion. An actuator for rotating the arm, the lifting platform is provided above the arms of the lifting arm, and the lifting platform can be moved up and down following the rotation of the arms. Good.

  According to the installation device of the present invention, the actuator is rotated by moving the first arm and the second arm of the lifting arm to one or the other around the intersection, thereby following the rotation of the lifting arm. Can be moved up and down.

  Further, in the present invention, the movement fixing means is supported movably on the lifting platform, and is movable to the first platform connected to one of the pair of moving platforms, and to the lifting platform. A second strip supported and connected to the other of the pair of movable bases, a first clamp capable of fixing the first strip to the lift base, and the second strip being lifted and lowered A second rope that can be fixed to a base; a third clamp that can be fixed to the first arm; a third clamp that can fix the first rope to the first arm; A fourth clamp capable of fixing two strips to the second arm, and fixing the first strip and the second strip to the lifting platform via the first clamp and the second clamp; The at least one pair of moving platforms is the lifting platform By fixing the first rope and the second rope to the first arm and the second arm via the third clamp and the fourth clamp, the both arms can be rotated. It is good also as following and the said moving stand moving to the direction which mutually approaches or separates in the upper part of the said lifting platform.

  According to the installation apparatus of the present invention, the first rope is fixed to the lifting platform via the first clamp of the movement fixing means, and the second clamp is fixed to the lifting platform via the second rope, thereby moving The table can be fixed to the upper part of the lifting table, and the interval between the reinforcing members on the upper part of the movable table can be fixed. In addition, by fixing the first rope to the first arm via the third clamp and fixing the second rope to the second arm via the fourth clamp, following the rotation of both arms, The movable table can be moved in the direction of approaching or separating from each other via the two cords, and the interval between the reinforcing members on the upper portion of the movable table can be widened or narrowed.

  Furthermore, the present invention is an installation method in which at least two reinforcing members are installed between the upper portions of two adjacent stringers of an upper structure of a floating structure, and a base is provided on an upper part of a carriage. A lifting platform that can be lifted up and down on the upper part of the base, a lifting and lowering means for lifting and lowering the lifting platform, and provided at the upper part of the lifting platform and movable in a direction approaching each other following the rising of the lifting platform And at least a pair of movable tables that can move in a direction away from each other following the descending of the lifting platform, a state in which the moving platform is moved at the upper portion of the lifting platform, and a state that is fixed to the upper portion of the lifting platform And a step of placing the at least two reinforcing members on the upper part of the moving table of the installation device; and 2 between the piles supporting the stringer A step of allowing the reinforcing member to enter a lower part of the reinforcing member, and the moving means is lifted integrally with the lifting platform by the lifting means so that the reinforcing member is positioned higher than the two stringers. Increasing the distance between the at least two reinforcing members by moving the moving table in a direction away from each other by the moving fixing unit while lowering the lifting table by the lifting unit. It is characterized by having.

  According to the installation method of the present invention, first, at least two reinforcing members are placed on the upper part of the moving table, and the two reinforcing members are passed through the piles supporting the two vertical beams adjacent to the carriage. The lower part is inserted below the reinforcing portion to be installed, the moving base is lifted integrally with the lifting base by the lifting means, and the two reinforcing members on the upper part of the moving base are positioned above the two stringers, and the lifting means While moving the moving table together with the lifting table, the moving table is moved away from each other by the movement fixing means, and the interval between the reinforcing members at the upper part of the moving table is widened. The reinforcing member can be adjusted, and the reinforcing member can be installed at a predetermined interval between the upper portions of two adjacent stringers.

  Further, in the present invention, a turntable is rotatably provided on the upper part of the base, and the lift is provided on the upper part of the turntable, and the pile supports the two vertical girders. When entering the lower part of the reinforcing part through the gap, the direction of the two reinforcing members is adjusted to be parallel to the two stringers by rotating the turntable. After raising both reinforcing members to a higher position above both stringers, the direction of both reinforcing members may be adjusted to be orthogonal to both stringers by rotating the turntable. Good.

  According to the installation method of the present invention, when the reinforcing member is longer than the interval between the piles supporting the two stringers, the turntable is rotated so that the directions of the two reinforcing members are the two stringers. Adjust so that it is parallel, let the carriage enter below the reinforcing part, raise both reinforcing members to a higher position above both stringers by lifting means, then rotate the turntable, By adjusting the directions of the two reinforcing members so that the two vertical beams are orthogonal to each other, the two reinforcing members can be installed between the two vertical beams.

  As described above, according to the installation apparatus and the installation method of the present invention, for example, when the upper structure of a floating structure such as a bridge is reinforced from the lower surface side, two adjacent two on the lower surface side of the upper structure are disposed. Two reinforcing members can be easily installed between the vertical beams.

It is the top view which showed one Embodiment of the installation apparatus by this invention, Comprising: It is the AA arrow line view of FIG. It is a front view (BB arrow view) of FIG. FIG. 3 is a DD arrow view of FIG. 2. It is CC arrow line view of FIG. It is the top view which showed one Embodiment of the installation method by this invention, Comprising: It is the top view which showed the relationship between a reinforcement girder and a pile. FIG. 6 is a front view of FIG. 5. It is sectional drawing seen along the AA line of FIG. It is the top view which showed one Embodiment of the installation method by this invention, Comprising: It is the schematic plan view which showed the state before approaching to a reinforcement part. It is the schematic plan view which showed the state after approaching to a reinforcement part. FIG. 10 is a front view of FIGS. 8 and 9. It is the schematic front view which showed the state which raised the movable stand with the raising / lowering stand. It is the schematic front view which showed the state which rotated the movable stand with the raising / lowering stand. FIG. 13 is a plan view of FIG. 12. It is a right view of FIG. It is the schematic front view which showed the state which lowered the movable stand with the raising / lowering stand. FIG. 16 is a plan view of FIG. 15. FIG. 16 is a right side view of FIG. 15. It is the schematic which showed the state which raised the moving stand with the raising / lowering stand again. It is the schematic which showed the state which lowered the moving stand with the raising / lowering stand. It is the schematic which showed other embodiment of the installation apparatus by this invention. FIG. 21 is a system diagram of FIG. 20.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 4 show an embodiment of an installation apparatus according to the present invention. The present embodiment is intended for an existing bridge as an aged water structure that is installed in a state of straddling a river or the sea for the passage of people, vehicles, and the like.

  Bridges are, for example, floor structures with roadways and sidewalks that support people and vehicles, superstructures such as main girders (vertical girders, horizontal girders) that support the floor slabs, beams (vertical beams, horizontal beams), etc. And a plurality of piles that transmit the load from the upper structure, the person, the vehicle, and the lower structure to the ground.

  In this embodiment, as shown in FIG. 2, reinforcing girders 45a and 45b as reinforcing members between the upper portions of two adjacent vertical girders 41a and 41b of the bridge upper structure 40 (see FIGS. 5 to 7). The installation apparatus 1 and the installation method of the present invention are applied to the installation.

  Specifically, as shown in FIGS. 5 to 7, a portion surrounded by four piles 42 a to 42 d that support two adjacent stringers 41 a and 41 b of the upper structure 40 (hereinafter referred to as a reinforcing portion 44). .)), The installation apparatus 1 and the installation method of the present invention are applied to install the two reinforcing beams 45a and 45b via the receiving bases 48a and 48b.

  Each of the reinforcing girders 45a and 45b has an arch shape as shown in FIGS. 6 and 7, and is formed on an inclined surface 46 in which the lower surfaces of both end portions are inclined downward toward the tip. A concave portion 47 having a triangular cross section extending in the longitudinal direction of each reinforcing beam 45a, 45b is provided at the center of the surface 46.

  Each of the pedestals 48a and 48b has a substantially trapezoidal trapezoidal shape, and an upper surface is formed on an inclined surface 49 that is sequentially inclined downward from both sides toward the center. The convex part 50 of the cross-sectional triangle shape extended in the longitudinal direction of 45a, 45b is provided. Each cradle 48a, 48b is being fixed to the upper part of each stringer 41a, 41b of each reinforcement part 44 via the volt | bolt.

  The reinforcing girders 45a and 45b are bridged between the upper portions of the vertical girders 41a and 41b of the reinforcing portions 44, and are fixed to the concave portions 47 on the lower surfaces of both ends of the reinforcing girders 45a and 45b and the upper portions of the vertical girders 41a and 41b. By fitting the raised portions 50 on the upper surface side of the receiving bases 48a and 48b to each other, they are installed between the upper portions of the stringers 41a and 41b of the reinforcing portions 44.

  As shown in FIGS. 1 to 4, the installation apparatus 1 according to the present embodiment includes a base 2, a turntable 3 that is rotatably provided on the top of the base 2, and a rotating unit 5 that rotates the turntable 3. The elevator 8 provided on the upper part of the rotary table 3 so as to be movable up and down, the lifting means 9 for raising and lowering the elevator 8, the movable table 14 provided on the upper part of the elevator 8 and the movable table 14. Or a moving / fixing means 22 for fixing to the lifting / lowering base 8, and an auxiliary lifting / lowering means 35 for lifting / lowering the entire rotary base 3, the lifting / lowering base 8, and the moving base 14.

  The base 2 has a rectangular plate shape, and is fixed to the upper part of a box-shaped base ship 38 with bolts or the like, and the rotary base 3 is rotated on the upper part of the base 2 via a rotating means 5. It is provided as possible. The trolley 38 is formed in a size capable of entering between two adjacent piles 42a and 42b of the bridge. Instead of the base 2, the turntable 3 may be rotatably provided directly on the upper part of the carriage 38 via the rotation means 5.

  The rotating means 5 includes a rail 6 provided in an annular shape in the upper center portion of the base 2, and a plurality of (four in the present embodiment) traveling carts 7 a to 7 d provided on the upper portion of the rail 6. And an actuator (not shown) for causing the traveling carriages 7a to 7d to travel along the rail 6.

  The turntable 3 is composed of a frame member 3a formed of a steel material in a square ring shape in a square ring shape, and triangular plate-shaped reinforcing plates 3b provided at four corners on the lower surface side of the frame member 3a, and the lower surface side of each reinforcing plate 3b. Are respectively provided with traveling carriages 7a to 7d. The turntable 3 can be rotated by running the running carriages 7a to 7d along the rails 6 by the actuator.

  The elevating means 9 is provided with two arms (first arm 12 and second arm 13) crossing each other in the X shape at both ends of the support shaft 11, and each of the two arms (first arm 12 and first arm 12). 2 arms 13) that are connected to each other so as to be pivotable (openable and closable) in the direction of the arrow about the support shaft 11, and two arms (first arm 12 and second arm 13) of the lifting arm 10 respectively. ) To rotate the actuator (not shown). The lower ends of the arms 12 and 13 of the elevating arm 10 are supported by a pair of support rails 3c provided on the upper surface of the turntable 3 so as to be movable in the left-right direction in FIG. The elevating arm 10 composed of the first arm 12 and the second arm 13 is rotatable (openable and closable). In addition, the rotation angle (opening-closing angle) of the raising / lowering arm 10 is restrict | limited by the lower ends of both arms 12 and 13 contacting stopper 4a-4b provided in the both ends of the support rail 3c.

  A rectangular plate-like lifting platform 8 is provided on the upper portions of both the first arm 12 and the second arm 13 of the lifting arm 10, and both the first arm 12 and the second arm 13 are opened and closed by an actuator by the actuator. By adjusting the overall height, the lifting platform 8 can be moved up and down following the lifting arm 10.

  The moving table 14 installed at the upper part of the lifting / lowering table 8 is composed of two moving tables, a first moving table 15 and a second moving table 18, and both moving tables 15 and 18 are provided at the upper center of the lifting / lowering table 8. It has been. The first moving table 15 and the second moving table 18 are configured to be movable toward and away from each other by a movement fixing means 22 described later, and can be fixed to the upper part of the lifting table 8. The reinforcing girders 45a and 45b are placed on the first moving table 15 and the second moving table 18, respectively.

  The first moving table 15 and the second moving table 18 include rectangular plate-shaped main bodies 16 and 19 and wheels 17 and 20 provided at four corners on the lower surface side of the main bodies 16 and 19. It is provided in the upper center portion of the lifting platform 8 so that the direction is orthogonal to the width direction of the lifting platform 8.

  As shown in FIGS. 1 to 3, the movement fixing means 22 is provided so as to surround the periphery of the lifting platform 8, and the first rope 23 that can circulate around the lifting platform 8, and the periphery of the lifting platform 8 Is provided on the lower surface side of the lifting / lowering base 8 and can be fixed to the lifting / lowering base 8 by clamping the first rope 23. The first clamp 26, the second clamp 27 that is provided on the lower surface side of the lifting platform 8, can clamp the second rope 24 and can be fixed to the lifting platform 8, and the first of the lifting arms 10 of the lifting means 9. Provided at the upper end of the arm 12, provided at the upper end of the second arm 13 of the elevating arm 10 of the elevating means 9, and the third clamp 28 that can clamp the second strip 24 and fix it to the first arm 12. Clamp the first rope 23 A fourth clamp 29 can be secured to the second arm 13, the first clamp 26, second clamp 27 is constructed from an actuator for opening and closing the third clamp 28 and the fourth clamp 29, respectively (not shown).

  The first rope 23 is, for example, a wire rope, and is surrounded by four support rollers 25a to 25d provided at four positions on both ends on the upper surface side and both ends on the lower surface side. It is supported so that it can go around. Both ends of the first rope 23 are connected to the left and right ends of the first moving table 15 in FIG. By rotating the first rope 23 around the lifting platform 8, the first moving table 15 can be moved on the lifting platform 8 following the first rope 23.

  The second rope 24 is, for example, a wire rope, and is surrounded by four support rollers 25a to 25d provided at four positions on both the upper surface side and the lower surface side of the lifting table 8. It is supported so that it can go around. Both ends of the second rope 24 are connected to the left and right ends of the second moving table 18 in FIG. 1 while penetrating the first moving table 15. By rotating the second strip 24 around the lifting platform 8, the second moving platform 18 can be moved on the lifting platform 8 following the second strip 24.

  Further, the first rope 23 is clamped by the first clamp 26 to fix the first rope 23 to the lifting platform 8, and the second rope 24 is clamped by the second clamp 27 to raise and lower the second rope 24. The first moving table 15 and the second moving table 18 can be fixed to the upper part of the lifting table 8 by fixing the third clamp 28 and the fourth clamp 29 to the unclamped state. In a state where the distance between the bases 15 and 18 is fixed, both the mobile bases 15 and 18 can be lifted and lowered following the lifting and lowering of the lift base 8.

  Further, the first clamp 26 and the second clamp 27 are brought into an unclamped state, the second rope 24 is clamped by the third clamp 28, the second rope 24 is fixed to the first arm 12, and the fourth clamp 29 is By clamping the first rope 23 and fixing the first rope 23 to the second arm 13, the first moving table 15 and the second moving table 18 can be moved in the upper part of the lifting platform 8. The two moving bases 15 and 18 are moved in a direction approaching each other following the ascent of the lifting base 8, and the two moving bases 15 and 18 are moved in a direction separating from each other following the lowering of the lifting base 8. be able to.

  Specifically, when the first arm 12 and the second arm 13 of the lifting arm 10 of the lifting means 9 are rotated in the closing direction to raise the lifting platform 8, the first arm 12 of the lifting arm 10 follows. The second strip 24 moves counterclockwise around the lifting platform 8 via the third clamp 28, and the second movable platform 18 is integrated with the second strip 24 in the left direction in FIGS. 1, the first rope 23 moves clockwise around the lifting platform 8 via the fourth clamp 29, and the first movable base 15 is integrated with the first rope 23 in FIGS. 1 and 2. It moves in the right direction and moves in a direction in which both moving platforms 15 and 18 approach each other.

  Further, when the first arm 12 and the second arm 13 of the lifting / lowering means 9 of the lifting / lowering means 9 are rotated in the opening direction to lower the lifting / lowering base 8, the third arm 12 follows the first arm 12 of the lifting / lowering arm 10. The second strip 24 moves clockwise around the lifting platform 8 via the clamp 28, and the second moving platform 18 moves to the right in FIGS. 1 and 2 integrally with the second strip 24, The first strip 23 moves counterclockwise around the lifting platform 8 via the fourth clamp 29, and the first movable platform 15 is integrated with the first strip 23 in the left direction in FIGS. The two moving platforms 15 and 18 move in directions away from each other.

  In the present embodiment, as shown in FIGS. 1 to 3, both ends in the longitudinal direction of the lifting platform 8 so as to correspond to both ends in the longitudinal direction of the first moving table 15 and the second moving table 18. The first rope 23 and the second rope 24 are provided in the section, and the first clamp 26, the second clamp 27, and the third clamp 28 are provided so as to correspond to the first rope 23 and the second rope 24, respectively. , And a fourth clamp 29 are provided.

  The auxiliary lifting means 35 is, for example, a hydraulic jack 36, and is interposed between the rotary base 3 and each traveling carriage 7a7d as shown in FIGS. The auxiliary lifting / lowering means 35 is used to compensate for the shortage when the height is insufficient only by lifting / lowering the lifting platform 8 by the lifting / lowering means 9. Therefore, when only the lifting means 9 is sufficient, it is not necessary to use it.

Next, the installation method of this Embodiment is demonstrated.
First, as shown in FIGS. 8 and 10, the first clamp 26 and the second clamp 27 are brought into an unclamped state and the third clamp 28 and the fourth clamp 29 are clamped by the actuator of the movement fixing means 22 of the installation apparatus 1. State. The first arm 23 and the second arm 13 follow the first arm 12 and the second arm 13 by opening and closing the first arm 12 and the second arm 13 of the lifting arm 10 by the actuator of the lifting means 9. The cable 24 is made to circulate around the lifting platform 8, and the first moving table 15 and the second moving table 18 are moved following the first cable 23 and the second cable 24. 18 is positioned at the center of the lift 8.

  Next, the third clamp 28 and the fourth clamp 29 are brought into the unclamped state and the first clamp 26 and the second clamp 27 are brought into the clamped state by the actuator of the movement fixing means 22, whereby the first strip 23 And the 2nd rope 24 is fixed to the raising / lowering stand 8 via the 1st clamp 26 and the 2nd clamp 27, and the 1st moving stand 15 and the 2nd moving stand via the 1st rope 23 and the 2nd rope 24 18 is fixed to the central part of the lifting platform 8.

  Next, while the first moving table 15 and the second moving table 18 are fixed, the first arm 12 and the second arm 13 of the elevating arm 10 are rotated in the opening direction by the actuator of the elevating means 9, and both arms are moved. 12 and 13, the lifting platform 8 is lowered to the lower end, and in this state, the reinforcing girders 45 a and 45 b are mounted on the first moving table 15 and the second moving table 18 via the rootstock 51 and the like, respectively. Let me put it.

Next, by rotating the turntable 3 with the actuator of the rotation means 5, the direction of the reinforcing girders 45a and 45b on the top of the first moving table 15 and the second moving table 18 is changed to the vertical structure of the bridge upper structure 40. Adjustment is made so as to be parallel to the girders 41a and 41b. Then, as shown by the arrows in FIG. 8, the carriage 38 is made to enter between two adjacent piles 42a and 42b of the bridge, and as shown in FIG. 9, the reinforcement surrounded by the four piles 42a to 42d. Two reinforcing beams 45a and 45b are positioned below the upper structure 40 of the portion 44.
8 to 10, the illustration of the movement fixing means 22 is omitted. Further, a process in the middle of rotating the turntable 3 is omitted.

  Next, as shown in FIG. 11, the elevator 8 is lifted by rotating the first arm 12 and the second arm 13 of the lifting arm 10 in the closing direction by the actuator of the lifting means 9. 15 and the upper reinforcing girders 45a and 45b of the second moving table 18 are raised to a higher position above the upper receiving tables 48a and 48b of the two adjacent vertical girders 41a and 41b. In addition, when the raising stroke of the raising / lowering arm 10 is insufficient, the jack 36 of the auxiliary raising / lowering means 35 shown in FIG.2 and FIG.4 is operated. In FIG. 11, the cradles 48a and 48b are not shown.

  Next, as shown in FIGS. 12 to 14, the first moving table 15 and the second moving table 18 are rotated together with the rotating table 3 by rotating the rotating table 3 by the actuator of the rotating means 5. The two reinforcing girders 45a and 45b above the first moving table 15 and the second moving table 18 are rotated, and the two reinforcing girders 45a and 45b are placed above the vertical girders 41a and 41b. The direction is orthogonal to

  Next, the first clamp 26 and the second clamp 27 are brought into an unclamped state and the third clamp 28 and the fourth clamp 29 are brought into a clamped state by the respective actuators of the movement fixing means 22. The first rope 23 and the second rope 24 are fixed to the upper ends of the 12 and the second arm 13 via the third clamp 28 and the fourth clamp 29 (see FIGS. 2 and 3).

  Next, as shown in FIGS. 15 to 17, the first arm 12 and the second arm 13 of the elevating arm 10 are rotated in the opening direction by the actuator of the elevating means 22 to follow the elevating arm 10. The elevator 8 is lowered, and the two reinforcing beams 45a and 45b at the top of the first moving table 15 and the second moving table 18 are lowered together with the elevator 8.

  In this case, following the movement of the first arm 12 and the second arm 13 of the lifting arm 10, the first rope 23 moves counterclockwise around the lifting platform 8, and the second rope 24 is moved to the lifting platform 8. The first moving base 15 and the second moving base 18 move away from each other in accordance with the first rope 23 and the second rope, and the two mobile stands 15 and 18 are moved in the clockwise direction. The space between the two reinforcing girders 45a and 45b at the upper part of both the moving bases 15 and 18 is widened.

  Then, while lowering the lifting platform 8, the distance between the two moving tables 15, 18 is adjusted, and the distance between the two reinforcing beams 45 a, 45 b at the upper part of both moving tables 15, 18 is set to each vertical beam 45 a, 45 b. To the interval between the upper cradles 48a and 48b (see FIG. 7).

  Then, after the interval between the two reinforcing beams 45a and 45b is adjusted to the interval between the upper bases 48a and 48b of the vertical beams 41a and 41b, the third clamp 28 and The fourth clamp 29 is set in an unclamped state, the first clamp 26 and the second clamp 27 are set in a clamped state, and the first rope 23 and the second rope 24 are lifted and lowered via the first clamp 26 and the second clamp 27. 8, the first moving base 15 and the second moving base 18 are fixed to the lifting base 8 via the first rope 23 and the second rope 24, and the two reinforcing beams 45 a and 45 b are fixed. Fix the interval.

  In this state, the first arm 12 and the second arm 13 of the elevating arm 10 are rotated in the opening direction by the actuator of the elevating means 9, and the elevating platform 8 is lowered following the elevating arm 10. The first moving table 15 and the second moving table 18 are lowered together with the lifting table 8, and the two adjacent reinforcing girders 45 a and 45 b on the first moving table 15 and the second moving table 18 are adjacent to each other. Between the upper portions of the pedestals 48a and 48b of the vertical girders 41a and 41b, the concave portions 47 on the lower surface side of both ends of the reinforcing girders 45a and 45b and the convex portions 50 on the upper surface side of the respective pedestals 48a and 48b are fitted to each other. (See FIGS. 6 and 7).

  Note that the space between the first moving table 15 and the second moving table 18 (the distance between the two reinforcing beams 45a and 45b) can be reduced by simply lowering the lifting table 8 once. If the distance between the upper pedestals 48a and 48b cannot be adjusted, as shown in FIG. 18, the lifting platform 8 with the movable platforms 15 and 18 fixed to the lifting platform 8 by the movement fixing means 22 is used. As shown in FIG. 19, the movable fixing units 22 make the movable tables 15 and 18 movable and the movable platforms 15 and 18 are separated from each other while the elevator 8 is lowered again. By repeating the movement in the moving direction, the distance between the two moving tables 15 and 18 (the distance between the reinforcing beams 45a and 45b) can be adjusted to the distance between the receiving tables 48a and 48a.

  Then, by repeating the above-described operation for each reinforcing portion 44, two reinforcing girders 45a and 45b are installed between two adjacent vertical girders 41a and 41b of each reinforcing portion 44, respectively. Then, after two reinforcing beams 45a and 45b are respectively installed between two adjacent vertical beams 41a and 41b of each reinforcing portion 44, the two reinforcing beams 45a and 45b of each reinforcing portion 44 and the upper structure 40 are disposed. The entire lower surface side of the upper structure 40 can be reinforced by filling the space between the floor slabs.

  In addition, when the lowering stroke is not enough only by the lowering of the lifting platform 8, the jack 36 of the auxiliary lifting means 35 is operated to lower the entire installation device 1, or the ballast is thrown into the carriage 38. Thus, by lowering the entire installation device 1, the two reinforcing beams 45a and 45b are installed between the upper bases 48a and 48b of the adjacent two vertical beams 21a and 21b.

  In the installation device 1 and the installation method of the present embodiment configured as described above, the installation device 1 is installed on the upper part of the carriage 38, and the first moving table 15 and the first moving table 15 of the moving table 14 of the installation device 1 are installed. (2) Two reinforcing girders 45a and 45b are placed on the upper part of the moving base 18, and the base ship 38 is moved below the reinforcing portion 44 of the upper structure 40 of the bridge to operate the installation device 1 to reinforce. Since the two reinforcing girders 45a and 45b are installed between the upper portions of the two adjacent vertical girders 41a and 41b of the portion 44, the superstructure 40 of the aged bridge without applying a load at the time of construction. Reinforcing girders 45a and 45b can be installed between the upper parts of two adjacent vertical girders 41a and 41b on the lower surface side of the.

  Moreover, since it is not necessary to attach a guide rail, a hoist crane, etc. in order to install the reinforcement girders 45a and 45b between the upper parts of two adjacent vertical girders 41a and 41b of the upper structure 40, the reinforcement girders 45a and 45b The operation of removing guide rails, hoist cranes, and the like after installation is not necessary, and the labor required for mounting the reinforcing girders 45a and 45b can be greatly reduced.

  Further, when the total length of the reinforcing girders 45a and 45b is larger than the interval between the two adjacent piles 42a and 42b that support the two adjacent vertical girders 41a and 41b, the turntable 3 of the installation device 1 is rotated. Then, the direction of the two reinforcing girders 45a and 45b is adjusted to be parallel to the two vertical girders 41a and 41b, and in this state, between the two piles 42a and 42b, below the reinforcing portion 44 of the upper structure 40. At that position, the lifting platform 8 is raised so that both the reinforcing beams 45a and 45b are positioned so as not to interfere with the vertical beams 41a and 41b above the vertical beams 41a and 41b, and the turntable 8 is rotated. Then, the direction of both reinforcing beams 45a and 45b is adjusted to be orthogonal to the vertical beams 41a and 41b, and in this state, the first moving table 15 and the second moving table of the moving table 14 are lowered while the lifting table 8 is lowered. Follow 18 and reinforce both 45a, it is possible to widen the distance between 45b.

  Therefore, even if the total length of the reinforcing girders 45a and 45b is larger than the interval between the two adjacent piles 42a and 42b supporting the two adjacent vertical girders 41a and 41b of the upper structure 40, the upper structure Since the reinforcing girders 45a and 45b can be easily installed in the respective reinforcing portions 44 of 40, the labor required for the reinforcing work of the upper structure 40 can be greatly reduced.

  Furthermore, the first clamp 26, the second clamp 27, the third clamp 28, and the fourth clamp 29 are brought into an unclamped state or a clamped state by the actuator of the movement fixing means 22 so as to follow the lifting and lowering of the lifting platform 8. Thus, the first moving table 15 and the second moving table 18 can be moved toward or away from each other on the lifting table 8, so that both the reinforcing girders 45a, 45b are lowered while both the reinforcing girders 45a, 45b are lowered. The space | interval between 45b can be expanded and both reinforcement girder 45a, 45b can be easily installed between the upper part of the adjacent two vertical girder 41a, 41b.

  In the above description, by setting the third clamp 28 and the fourth clamp 29 to the clamped state, the third clamp 28 and the second clamp 13 follow the opening and closing of the first arm 12 and the second arm 13 of the lifting arm 10. The first rope 23 and the second rope 24 are circulated through the four clamps 29, and the first movable table 15 and the second movable table 18 approach each other following the second rope 23 and the second rope 24. The first cable 23 or the second cable 24 is moved in the direction in which the first cable 23 or the second cable 24 is moved, but one of the third clamp 28 and the fourth clamp 29 is in a clamped state and the other is in an unclamped state. Any one of the first moving table 15 and the second moving table 18 may be moved by rotating one of them.

  20 and 21 show another embodiment of the installation apparatus according to the present invention. The installation apparatus 1 according to the present embodiment uses a rack 30 and a pinion 31 as the movement fixing means 22, and attaches the racks 30a and 30b to the upper ends of the first arm 12 and the second arm 13 of the lifting arm 10, respectively. 31a and 31b are attached to the wheels 17 and 20 of the first moving table 15 and the second moving table 18 via clutches 32a and 32b, respectively, and the pinions 31a and 31b are engaged with the racks 30a and 30b.

  According to the installation device 1 of the present embodiment, the respective clutches 32a and 32b are turned on, and the wheels 17 and 20 of the respective moving bases 15 and 18 and the pinions 31a and 31b are connected via the clutches 32a and 32b. In this state, by opening and closing the first arm 12 and the second arm 13 of the elevating arm 10, the racks 30a and 30b are moved in the direction of the arrow in FIG. Each pinion 31a, 31b can be rotated following the movement of each rack 30a, 30b, and each moving table 15, 18 can be moved on the lift table 8.

  Moreover, each clutch 32a, 32b is turned off, the connection state via the clutches 32a, 32b of the wheels 17, 20 of each movable base 15, 18 and the pinions 31a, 31b is released, and each pinion 31a, 31b is released. Even if the first arm 12 and the second arm 13 of the elevating arm 10 are opened and closed and the racks 30a and 30b are moved together with the first arm 12 and the second arm 13 by setting the free state, By rotating the pinions 31a and 31b on the racks 30a and 30b in a free state, the movable bases 15 and 18 can be fixed in a state of being stopped at the upper part of the lift base 8.

  And even if it exists in the installation apparatus 1 of this Embodiment, there exists an effect similar to what is shown in the said embodiment.

  In the above-described embodiments, a pair of moving tables (the first moving table 15 and the second moving table 18) is provided on the upper part of the lifting table 8. However, two or more moving tables are provided, and each pair of moving tables is provided. You may comprise so that a rope may be connected with each each mobile stand.

DESCRIPTION OF SYMBOLS 1 Installation apparatus 2 Base 3 Turntable 3a Frame material 3b Reinforcement plate 3c Support rail 4 Stopper (4a, 4b)
5 Rotating means 6 Rail 7 Traveling cart (7a-7d)
DESCRIPTION OF SYMBOLS 8 Lifting base 9 Lifting means 10 Lifting arm 11 Support shaft 12 First arm 13 Second arm 14 Moving base 15 First moving base 16 Main body 17 Wheel 18 Second moving base 19 Main body 20 Wheel 22 Moving fixing means 23 First rope 24 2nd rope 25 Support roller (25a-25d)
26 1st clamp 27 2nd clamp 28 3rd clamp 29 4th clamp 30 Rack (30a, 30b)
31 pinion (31a, 31b)
32 Clutch (32a, 32b)
35 Auxiliary lifting means 36 Jack 38 Cargo ship 40 Superstructure 41 String (41a, 41b)
42 piles (42a-42d)
44 Reinforcement part 45 Reinforcement girder (45a, 45b)
46 Inclined surface 47 Recessed portion 48 Receiving base (48a, 48b)
49 Inclined surface 50 Convex 51 Rootstock

Claims (5)

  A base, a lift provided on an upper part of the base, a lifting means for raising and lowering the lift, and provided on an upper part of the lift and approaching each other following the rise of the lift At least a pair of movable bases that are movable in a moving direction and move in a direction away from each other following the descending of the lifting base, a state in which the movable base is moved above the lifting base, and An installation apparatus comprising: a movement fixing means for switching to a state of being fixed to the upper part. The elevating means intersects the first arm and the second arm in an X shape, and is connected to an elevating arm that is pivotable about the intersecting portion, and an actuator that rotates both arms of the elevating arm. And
The installation device according to claim 1, wherein the lifting platform is provided at an upper portion of both arms of the lifting arm, and the lifting platform is configured to be able to move up and down following the rotation of the arms. . The movement fixing means is movably supported by the lifting platform, and is supported by the first platform connected to one of the pair of moving platforms, and is movably supported by the lifting platform, A second rope coupled to the other of the pair of movable bases; a first clamp capable of fixing the first rope to the lift; and a second clamp capable of fixing the second rope to the lift. A second clamp, provided on the first arm, a third clamp capable of fixing the first rope to the first arm, and a second clamp provided on the second arm; A fourth clamp that can be fixed to two arms,
By fixing the first rope and the second rope to the lifting platform via the first clamp and the second clamp, the at least one pair of moving platforms is fixed to the upper part of the lifting platform,
By fixing the first rope and the second rope to the first arm and the second arm via the third clamp and the fourth clamp, following the rotation of the both arms, The installation apparatus according to claim 2, wherein the moving base moves in a direction approaching or separating from each other at an upper portion of the lifting base. An installation method for installing at least two reinforcing members between the upper portions of two adjacent stringers of a superstructure of a floating structure,
A base on the upper part of the trolley, a lift provided on the top of the base so as to be movable up and down, a lifting means for raising and lowering the lift, and a lift on the lift. At least a pair of movable bases that can move in a direction approaching each other and follow the lowering of the lifting platform, and a state in which the movable platform is moved above the lifting platform And a step of installing an installation device comprising a movement fixing means for switching to a state of being fixed to the upper portion of the lifting platform, and placing the at least two reinforcing members on the upper portion of the movement table of the installation device; ,
A step of allowing the base boat to enter below the reinforcing portion where the two reinforcing members are installed through the piles supporting the two adjacent stringers;
Raising the moving table integrally with the lifting platform by the lifting means to raise the reinforcing member to a higher position above the two stringers;
A step of widening the interval between the at least two reinforcing members by moving the moving base in a direction away from each other by the moving fixing means while lowering the lifting base by the lifting means. Characteristic installation method.   A turntable is rotatably provided on the upper part of the base, and the lifting table is provided on the upper part of the turntable, and the carriage is connected to the reinforcement portion through the piles supporting the two stringers. When entering the lower part, the direction of the two reinforcing members is adjusted to be parallel to the two stringers by rotating the turntable, and the two reinforcing members are adjusted by the lifting means. 5. The direction of the two reinforcing members is adjusted to be orthogonal to the two stringers by rotating the turntable after being raised to a higher position above the stringers. The installation method described.

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