JPH0953208A - Method of reinforcing construction of pier and reinforcing-frame fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To execute the reinforcement of a pier rationally at a high speed by filling a section between an underground frame arranged around the pier and the pier with fillers and vibrating the underground frame while force-feeding high-pressure water and settling and driving the underground frame. SOLUTION: Reinforcing frames 4, 4 are installed onto the peripheral surface of a pier 1, and sections among the reinforcing frames 4 and the pier 1 are filled with fillers. In a method of reinforcing construction of the pier 1, a cylindrical underground frame 4 (I) mounted to the underground section of the pier 1 is disposed around the pier 1. The underground frame 4 (I) is vibrated while high-pressure water is force-fed between the underground frame 4 (I) and the pier 1, and the underground frame 4 (I) is settled and driven. A plurality of ground frames 4 (II), in which pairs of half-split frame pieces are connected cylindrically, are superposed and set up to the ground section of the pier 1, and a section between the ground frame (II) and the pier 1 is filled with fillers.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pier reinforcement method and a reinforced frame mounting device capable of performing a pier reinforcement work at high speed and rationally and improving the reliability of construction accuracy.

[0002]

2. Description of the Related Art Structures such as railways and roads have been severely damaged by the Great Hanshin Earthquake and promptly restored, and even greater safety of transportation against earthquakes is required, even if an earthquake of the same level occurs. In order to avoid collapse of existing structures and collapse of iron bridges, it is desirable to strengthen the seismic strength of the piers and carry out reinforced work immediately.

[0003] Conventionally, as a method of reinforcing the pier's seismic strength, for example, in a bridge pier on an elevated road, a heavy steel machine such as a so-called wrecker is used to cover the underground portion and the ground portion of the pier with a reinforcing iron plate, and the steel plate and the pier are connected to each other. Between them was filled with epoxy resin or mortar

However, this conventional method requires excavation of the underground portion of the pier, which requires complicated and large-scale work, and requires assembly of a scaffold for work on the ground portion, resulting in large-scale reinforcement work. However, there were problems such as an increase in construction cost and a longer construction period.

[0005]

SUMMARY OF THE INVENTION The present invention solves such a problem and enables a pier reinforcement work to be carried out at high speed and rationally, and at the same time, to improve the reliability of construction accuracy. An object is to provide a reinforcing frame attachment device.

[0006]

According to a first aspect of the present invention, there is provided a pier reinforcement method in which a reinforcing frame is attached to a peripheral surface of the pier and a filling material is filled between the frame and the pier. A cylindrical underground frame to be mounted on the pier is placed around the pier, the underground frame is vibrated, high-pressure water is pumped between the underground frame and the pier, and the underground frame is sunk and placed, for high-speed construction. In addition to reducing the size of the equipment and the cost of the equipment, the work range is limited between the underground frame and the bridge pier to reduce the scale and the amount of excavation can be reduced. According to the second aspect of the invention, the upper end of the underground frame is projected to a predetermined height above the ground so that it can be easily connected to the above-ground frame. Claim 3
Of the invention, a plurality of above-ground frames in which a pair of half-frame-shaped frame pieces are connected in a cylindrical shape are superposed on the above-ground portion of a pier and mounted, and a reinforcement of the pier is filled with a filling material between the frames and the pier. In the construction method, the frame pieces of each above-ground frame are connected at a pier position at a predetermined height above the ground, the connected above-ground frames are sequentially moved upward, and the above-mentioned ground frames are attached directly to the above-mentioned ground frames. The range of movement is suppressed, and the capacity of the moving device can be reduced for this purpose. According to a fourth aspect of the present invention, a plurality of above-ground frames in which a pair of half-framed frame pieces are connected in a tubular shape are superposed on the above-ground portion of the pier and mounted, and a filling material is filled between the frames and the pier. In the pier reinforcement method,
The ground frames are sequentially mounted from below so that the frames can be mounted stably and reliably. According to the invention of claim 5, a plurality of reinforcing frames are vertically overlapped and mounted on the peripheral surface of the pier, and a filling material is filled between the frames and the pier. Make the joint part of the frame unconnected,
It is designed to give toughness to the pier. According to a sixth aspect of the present invention, a pair of half-divided frame pieces are attached to the peripheral surface of the pier, the axial end portions of the frame pieces are connected, and a filling material is filled between the frame and the pier. In the pier reinforcement method, the mechanical connection of the axial joints of the frame pieces should be realized by screw connection with bolts or screws, or by means of tacks, nails, needles, etc. ing. According to a seventh aspect of the present invention, a pair of half-divided frame pieces are attached to the peripheral surface of the pier, the axial end portions of the frame pieces are connected, and a filling material is filled between the frame and the pier. In the bridge pier reinforcement method, a plurality of engaging concave portions and engaging convex portions that can be engaged with each other are provided at an axial joint portion of the frame piece, and these engaging concave portions and the engaging convex portions are screw-connected. , The frame pieces are firmly connected. According to the invention of claim 8, the movement of the engagement concave portion and the engagement convex portion is restrained through the engagement between the engagement concave portion and the engagement convex portion, and the frame piece can be connected before the screw connection. In the invention of claim 9, the pair of frame pieces are made of metal or synthetic resin to realize mechanical connection of the frame pieces of various members, and the frame pieces made of synthetic resin reduce weight and facilitate handling. , It is designed to be flexible when assembled. According to the tenth aspect of the invention, the axial end portions of the pair of frame pieces made of synthetic resin are welded and connected to each other to firmly connect the frame pieces. According to the invention of claim 11, a fixed frame provided with an anchor block is fixed to a peripheral surface of a pier, a reinforcing frame is arranged on the outer side of the fixed frame, and the frame is screw-connected through the block, and In addition to realizing simple attachment, the block functions as a space holding member between the pier and the reinforcing frame. According to a twelfth aspect of the present invention, a plurality of elastically displaceable spacers are provided on the inner surface of the reinforcing frame, and the spacers are arranged so as to be engageable with the peripheral surface of the pier so that a uniform space is provided between the reinforcing frame and the pier. Let it form
This allows for uniform filling of the filling material. According to the invention of claim 13, an injection hose capable of discharging the filling material is provided so as to be vertically movable between the reinforcing frame and the pier, and a filling detection sensor is provided in the discharge port of the hose, and the injection hose is supplied via this detection signal. The filling material is smoothly filled, and the impact at the time of filling is reduced. According to the fourteenth aspect of the present invention, the ground frame is constrained through the column clamp having the magnet that can be attracted to the ground frame, and the clamp can be easily and quickly attached. According to a fifteenth aspect of the present invention, in a reinforcement frame mounting device including a vertically movable work platform and a suction device capable of holding a reinforcement frame, a pair of work platforms can be connected with a bridge pier interposed therebetween, and the suction device is provided. The work platform can be stably moved along the pier, and the reinforcing frame can be installed neatly. According to the sixteenth aspect of the present invention, a pair of worktables are provided, the worktables can be moved together with the suction device, and the reinforcing frame can be attached efficiently.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a preferred embodiment of the present invention applied to a bridge pier which is a structure such as a railway or a road will be described with reference to the drawings. In FIGS. 1 to 17, 1 is a reinforced concrete having a rectangular cross section. A bridge pier is provided with a ground beam 2 at its upper end, and a track (not shown) consisting of a roadbed, sleepers, and rails is laid on the beam 2, and a lower end of the pier 1 is a massive underground beam 3 buried underground. Connected to the basement 1a of the pier 1
A reinforcing frame 4 for strengthening the seismic resistance is attached to the peripheral surface of the ground portion 1b.

The reinforcing frame 4 is composed of an iron pipe body having a shape similar to that of the pier 1. This is an underground frame 4 (I) to be mounted on the underground portion 1a of the pier 1 and an aboveground portion to be mounted on the aboveground portion 1b of the pier 1. Frame 4
(II), of which the underground frame 4 (I) is composed of a single frame that projects above the ground beam 3 above the ground, and the above-ground projecting height h is the construction of the above-ground frame 4 (II). The height is set to be 50 cm in this embodiment, which is a desired height for efficiently performing.

The above-ground frame 4 (II) is composed of a plurality of frame bodies, two frame bodies having the same length as the underground frame 4 (I) and a frame body slightly shorter than the underground frame 4 (I). . These underground frames 4
(I) and the ground frame 4 (II) are a frame in which a pair of frame pieces 4a to 4h formed by bending a steel plate into a substantially U-shape are opposed to each other, and the joint portion 5 is welded in the vertical direction, and the frames are vertically adjacent to each other. The joint portions 6 of the pieces 4a to 4h are welded in the lateral direction and are sequentially assembled in the vertical direction.

Each pair of frame pieces 4a located at the joint portion 5
The end of 4h is formed in a taper shape as shown in FIG. 13. On the other hand, in the case of the drawing, joints 7, 7 are projectingly provided on the inner and outer surfaces of the frame piece 4c, and the end of the frame piece 4d is provided between them. By inserting, the left and right positions of each pair of frame pieces can be positioned. Also,
The end portions of the frame pieces 4a to 4h located above and below the joining portion 6 are formed into flat surfaces as shown in FIG. 15, while in the case of the illustration, the joint pieces 8 are formed on the inner and outer surfaces of the lower frame piece 4c. 8 are projected upward, and the ends of the upper frame pieces 4e are inserted between them so that the vertically adjacent frame pieces can be positioned.

A spacer 9 is provided on the inner surface of each of the frame pieces 4a to 4h, and the spacer 9 is made of spring steel having excellent elasticity.
The leg piece 8 is formed by bending it into a substantially V shape as shown in FIG.
The a and 8a are arranged so as to be engageable with the peripheral surface of the pier 1, and through the elasticity thereof, the interval 10 between the frame pieces 4a to 4h and the pier 1 can be formed uniformly.

When assembling the underground frame 4 (I), a frame 11 is installed at the base of the pier 1 as shown in FIGS. 1 and 2, and a pair of frame pieces 4a and 4b are placed facing each other on the frame 11. Moreover, their ends are abutted against each other so that the joint can be welded in the longitudinal direction, that is, the pipe axis direction. Frame piece 4
A plurality of vibration generators 12 such as low-frequency vibration motors are installed at the upper ends of a and 4b, and a plurality of high-pressure hoses 13 capable of supplying high-pressure water are piped on the inner surfaces of the frame pieces 4a and 4b. Then, an injection nozzle (not shown) is attached to the lower end of the pipe 13, and the injection port is arranged downward.

After the underground frame 4 (I) is buried, the vibration generator 12 and the high-pressure hose 13 are removed, and the underground frame 4 is replaced.
On the outside of the protruding end of (I), one reinforcing frame mounting device 14
Is installed. The reinforcing frame mounting device 14 is configured by modifying a general-purpose hydraulic excavator, and this is a crawler 1 which is a moving device.
5, a main body 16 having a driver's seat, and a work arm 17 capable of bending and stretching, and a suction device 18 is attached to the tip of the arm 17.
Equipped.

As shown in FIG. 11, the suction device 18 is provided with a bracket 19 in which a plurality of frame members are framed.
Is connected to the tip of the working arm 17, and the bracket 19
In addition, a plurality of suction tools 20 such as suction cups or magnets capable of suctioning the frame pieces 4c to 4h are provided.

When assembling the ground frame 4 (II),
First, by using a heavy machine such as a crane (not shown), the pair of frame pieces 4g and 4h arranged at the uppermost portion are mounted on the pedestals 1 on both sides of the pier 1.
1 and 11 are housed in a standing position, they are sandwiched from both sides of the pier 1, their ends are abutted, and their joints 5 and 5 are welded and connected in the longitudinal direction via a welding machine 21.
This situation is as shown in FIG.

After connecting the frame pieces 4g and 4h, the gantry 11 and the welding machine 21 are removed, and instead the reinforcing frame attachment device 14 is moved to attach the suction device 18 to either one of the frame pieces 4g and 4h. Then, when this is held, the work arm 17 is vertically lifted as shown in FIG. 4, the frame pieces 4g and 4h are lifted to a predetermined height, and the position is temporarily fixed by an appropriate means such as an anchor bolt. After that, the reinforcement frame attachment device 14 is withdrawn, and instead, the next-stage frame pieces 4e, 4f are accommodated in a standing position on the pedestals 11, 11 on both sides of the pier 1 using a heavy machine such as a crane (not shown). Then, these are sandwiched from both sides of the pier 1, their ends are abutted, and their joints 5 and 5 are welded in the longitudinal direction via the welder 21 to connect them.

After connecting the frame pieces 4e and 4f, the gantry 11 and the welding machine 21 are removed, and instead the reinforcing frame attachment device 14 is moved to attach the suction device 18 to one of the frame pieces 4g and 4h. Then, when this is held, the anchor bolt is removed, the working arm 17 is slightly lowered, and the frame piece 4
The lower ends of g and 4h are butted against the upper ends of the frame pieces 4e and 4f.

After connecting the frame pieces 4g, 4h, 4e and 4f, the working arm 17 is lowered to attach the suction device 18 to one of the frame pieces 4e and 4f and hold it,
As shown in FIG. 5, the work arm 17 is vertically lifted to move the frame piece 4
The g, 4h, 4e, and 4f are integrally lifted to a predetermined height, and the position is temporarily fixed by an appropriate means such as an anchor bolt.

After the temporary fixing, the reinforcing frame mounting device 14 is withdrawn, and the other frame pieces 4c and 4d are replaced by a crane (not shown).
Using a heavy machine such as the above, it is housed in the pedestals 11 and 11 on both sides of the pier 1 in a standing position, and these are sandwiched from both sides of the pier 1,
The ends are abutted against each other, and the joints 5 and 5 are welded to each other in the longitudinal direction via the welding machine 21 to be connected.

The lower ends of the frame pieces 4c and 4d are attached to the frame pieces 4a and 4d.
It is joined to the upper end of b and they are unconnected. After that, the reinforcing frame attachment device 14 is moved to attach the suction device 18 to one of the frame pieces 4e and 4f, and when this is held, the anchor bolt is removed,
By lowering the working arm 17 slightly, the lower ends of the frame pieces 4e, 4f are abutted against the upper ends of the frame pieces 4c, 4d, and the joints 6 thereof are welded in the lateral direction to connect them. A series of assembling work of the frame pieces 4a to 4h is completed. In this way, the vertically adjacent reinforcing frames 4 and 4 are not connected to each other. This situation is as shown in Fig. 6. After this, the gantry 1
1 and the welder 21 are removed, and the reinforcing frame attachment device 14 is moved.

As described above, in the assembling of the ground frame 4 (II), the pair of frame pieces 4c to 4h are mounted on the pier 1 at a constant ground height, and are sequentially moved upward.
As compared with the method of stacking ~ 4h in order from the bottom, assembling the frame pieces 4c to 4h can be performed at a lower position, actually on the ground, and can be performed safely and quickly without the need of assembling the scaffolding, and the working arm. Since the small lifting height of 17 is sufficient, the capacity of the reinforcing frame attachment device 14 can be reduced and the facility cost can be reduced accordingly.

After assembling the reinforcing piece 4 to the pier 1 in this way,
A plurality of column clamps 2 at predetermined positions on the ground frame 4 (II)
2 are attached at substantially equal intervals, and the ground frame 4 (II) is bound. As shown in FIG. 14, the column clamp 22 includes a pair of clamp frames 23, 23 in which angle members are assembled in a substantially L shape.
With the bolt insertion holes 24, 24 provided at both ends of the frame 23, the bolts 25 are inserted into the holes 24 and tightened with nuts (not shown) to connect the clamp frames 23, 23. I have to.

A frame piece 4 is provided on the lower surface of the clamp frames 23, 23.
A magnet 26 for temporary fixing that can be attracted to c to 4h is provided, and its inner surface is formed as a flat surface that is flush with the inner surface of the clamp frame 23. In the figure, 27 is a rubber packing mounted on the inner surface of the clamp frame 23.

After mounting the column clamp 22, a plurality of injection hoses 2 capable of supplying a filling material 28 such as mortar or synthetic resin into the gap 10 between the pier 1 and the frame pieces 4a to 4h.
9 is vertically piped, and a filling detection sensor 30 is provided in the discharge port.

In the case of this embodiment, the sensor 30 is
Three electrode type level sensors are adopted. Of these, a pair of filling detection sensors 30 are arranged such that their detection positions are vertically displaced as shown in FIG. 17, and these sensors 30, 30 are immersed in the filling material 28. At that time, the detection signal is input to a drive motor for an electric hose reel, which will be described later, and the reel is driven to wind the injection hose 29 by a predetermined amount so that the hose 29 can be wound.

The injection hose 29 has a frame piece 4g at the uppermost position,
The electric hose reel 3 is fed from the upper end of 4h to the outside.
It can be wound up to 1. The electric hose reel 30
A fulcrum 32 that is rotatably supported by a column 32 installed near the pier 1 is provided with a motor 33 that can rotate forward and backward.

The injection hose 29 wound around the electric hose reel 31 is fed to the side of the reel 31 and connected to an injection pump 34, and the pump 35 is connected to a mixer 35 containing a filling material 28. There is. In the figure, 36 is a hose protector provided on the upper ends of the frame pieces 4g and 4h, which is designed to promote smooth movement of the injection hose 29, and 37 is a control panel.

After the filling material 28 is filled and solidified, the column clamp 22 is removed, the injection hose 29, the electric hose reel 31, the injection pump 34, and the mixer 35 are removed, and the surface of the reinforcing frame 4 is automatically coated by the coating machine 38. I try to paint it.

18 to 30 show another embodiment of the present invention, in which the components corresponding to those in the above-mentioned embodiment are designated by the same reference numerals. 18 to 20 show a second embodiment of the present invention, and propose a new method for laying the underground frame 4 (I). That is, in this embodiment, a plurality of attachments 39 are hooked on the upper ends of the frame pieces 4a and 4b, a powerful and heavy vibration generator 40 is integrally attached to the attachments 39, and the vibration of the generator 40 is prevented. It is transmitted to the frame pieces 4a and 4b through the attachment 39,
It is designed to speed up the implantation of a and 4b. In the figure, reference numeral 41 denotes a hose mounting ring provided on the inner surfaces of the frame pieces 4a and 4b, to which the high pressure hose 13 can be mounted. The ring 41 is also used in the first embodiment described above.

FIG. 21 shows a third embodiment of the present invention, and proposes a new reinforcing frame mounting device 42. That is, this embodiment is a modification of a conventional forklift truck,
A hydraulically actuable work arm 43 is provided at its front part so as to be vertically movable and bendable and extendable, and the suction device 18 is connected to the tip of the arm 43. In addition, a pair of basket-shaped work benches 44, 44 are provided on both sides of the suction device 18, and these are configured to be movable together with the suction device 18, and the work bench 43 is provided with a worker, a welding machine, members to be used and tools. The frame pieces 4c to 4h can be housed so that the frame pieces 4c to 4h can be mounted at the same height as the suction device 18 in an efficient manner.

At this time, if two reinforcing frame mounting devices 42 are used and they are arranged on both sides of the pier 1, frame pieces 4c to 4c
Positioning of h can be performed easily and quickly, and the joint 5,
After welding 5, the frame pieces 4c to 4h are lifted to a predetermined height,
By temporarily fixing this with anchor bolts, etc., a series of installation work can be done efficiently.

FIG. 22 shows a fourth embodiment of the present invention and proposes a new column clamp 22. That is, in this embodiment, one end of a pair of clamp frames 23, 23 is rotatably connected via a pin 45, a bolt 25 is inserted into a bolt insertion hole 24 at the other end, and this is a nut (not shown). The column clamp 22 is tightened with the column clamp 22 by reducing the tightening work of the bolt 25 by one as compared with the above-described embodiment.
Can be easily installed.

FIG. 23 shows a fifth embodiment of the present invention, and proposes a new reinforcing frame attaching device 45 and its assembling method. That is, the reinforcing frame attachment device 45 of this embodiment
Is a main body 46 that can move on the ground, a lifting lift 47 that can be expanded and contracted by a hydraulic pressure generator (not shown) mounted on the main body 46, and a work table 48 that is provided on the upper end of the lift 47.
Both sides of the pedestals 48, 48 are connected via links 49, 49 to promote their synchronous operation and stabilize the operation. A work arm 17 operable by the hydraulic pressure generator is provided on the work table 48.
The adsorption device 18 is connected to the tip of the. In the figure, reference numeral 50 is a safety fence standing around one side of the worktables 48, 48.

The reinforcing frame 4 is attached by the reinforcing frame attaching device 45.
In the case of mounting, after driving the frame pieces 4a and 4b into the ground, two reinforcing frame attachment devices 45 are moved to both sides of the base of the pier 1, and their work platforms 48 and 48 are connected via links 49 and 49. . Next, the frame pieces 4c and 4d, which are the above-ground frames 4 (II), are carried into the worktables 48 and 48 to the respective reinforcing frame attachment devices 45 via a heavy machine such as a crane, and the back surface of these is attached to the suction device 1
Hold at 8 and 18.

Then, the lifting lifts 47, 47 are operated,
When the work platforms 48, 48 are moved to the upper end positions of the frame pieces 4a, 4b, both work arms 17, 17 are moved toward the pier 1, and the frame pieces 4c held by the suction devices 18, 18 are provided.
4d is sandwiched from both sides of the pier 1, their ends are abutted, their lower ends are joined to the upper ends of the frame pieces 4a, 4b, and their joints 5 are welded in the vertical direction.

After mounting the frame pieces 4c and 4d, the working arm 1
7 and 17 are retracted from the pier 1, and adsorption devices 18 and 18
Is lifted from the frame pieces 4c and 4d, and lifts 47 and 47
Is operated to move the worktables 48, 48 to the upper end positions of the frame pieces 4c, 4d, the frame pieces 4e, 4f are carried into the worktables 48, 48 via a heavy machine such as a crane, and the rear surfaces thereof are It is held by the adsorption devices 18, 18.

After that, both work arms 17, 17 are moved toward the bridge pier 1, the frame pieces 4e, 4f held by the suction devices 18, 18 are sandwiched from both sides of the bridge pier 1, and their ends are butted. At the same time, attach the lower end of them to the frame piece 4
They are joined to the upper ends of c and 4d, and their joints 5 are welded in the vertical direction. Thereafter, the same work is performed to make the frame pieces 4e,
The frame pieces 4g and 4h are superposed and assembled on 4f.

As described above, the above-mentioned mounting method is applied to the ground frame 4 (I
I) is installed in order from the bottom, and at that time, each frame piece 4c to 4h
Since the work is performed while the frame is stationary, the reinforcement frame 4 can be mounted smoothly and easily compared with the above-described embodiment that requires this movement after welding the frame pieces, and the occurrence of troubles due to the movement can be prevented. You can Moreover, since the two reinforcing frame mounting devices 45 are used for the above-mentioned mounting, the above-described work can be performed quickly, and the worktables 48, 48 are connected and operated synchronously. , 48 is improved in stability and work safety is secured.

24 to 27 show a sixth embodiment of the present invention, and propose a new mounting method for the reinforcing frame 4. That is, the reinforcing frame mounting method of this embodiment requires a vertically long fixed frame 51 having an L-shaped cross section such as an angle member.
1 is formed with a through hole 53 into which the bolt 52 can be inserted, an anchor block 54 having a wall thickness larger than the head thickness of the bolt 52 is fixed, and a bolt 56 can be screwed into a screw hole 55 of the block 54. There is. In the figure, 57 and 58 are washers, 59 is a screw hole provided at a predetermined position of the pier 1,
Reference numeral 60 denotes a bolt insertion hole provided in the reinforcing frame 4.

When the above-mentioned fixed frame 51 is used to mount the reinforcing frame 4 on the ground, screw holes 59 are provided at predetermined positions at the four corners of the pier 1.
And the fixing frames 51 are positioned at the four corners, and the through holes 5 are formed.
A bolt 52 is inserted into 3 through a washer 57, and the bolt 52 is screwed into a screw hole 59 to attach the fixing frame 51. Next, the reinforcing frame mounting device 42 is operated to hold the single frame pieces 4c to 4h on the suction device 18, and the single frame pieces 4c to 4h are positioned at a predetermined mounting position of the pier 1, and the bolt 56 is bolted via the washer 58. It is inserted into the insertion hole 60 and screwed into the screw hole 55 to be fixed.

After the pair of frame pieces 4c and 4d are attached to the base of the pier 1, the frame piece 4e is held by the adsorption device 18, and the device 18 is lifted above the frame piece 4c to move the frame piece 4c to the pier 1.
Position it in the specified mounting position of the
6 is screwed into the screw hole 55 and fixed. At this time, the work of screwing the bolts 52 and 56 is performed on the basket-shaped work table 44, and since the work table 44 moves up and down together with the suction device 18, the height of the work table 44 increases depending on the mounting position of the frame piece. Is automatically set, and the above work can be performed easily and efficiently.
If the two reinforcing frame attaching devices 42 are arranged on both sides of the pier 1, the above attaching work of the reinforcing frame 4 can be performed more quickly.

When the frame pieces 4c to 4h have been attached in this manner, a gap 10 is formed between the fixed frame 51 and the frame pieces 4c to 4h and is approximately the thickness of the anchor block 54, which is the spacer as described above. Since it plays the role of 9, the arrangement of the spacer 9 can be omitted. Then, after the frame pieces 4c to 4h are attached, the joint portions 5 and 6 are welded.

28 to 30 show a seventh embodiment of the present invention, and propose a new mounting method for the reinforcing frame 4. That is, according to the reinforcing frame mounting method of this embodiment, each of the frame pieces 4a to 4h is made of iron, that is, iron and steel, or a robust synthetic resin such as F.I. R. P, and bead-shaped ribs 61 and 62 are provided on the joints 5 and 5 along the tube axial direction so as to project outward, and any one of these ribs, in this embodiment, a plurality of engagements with the rib 61. The recess 63 is formed and the other rib 6 is formed.
2 is formed with an engaging convex portion 64 that can be engaged with the concave portion 63.

In this embodiment, the engaging concave portion 63 and the engaging convex portion 64 are formed in a trapezoidal shape in plan view, and are prevented from coming off from the joint portion 5 after they are engaged with each other.
Of these, a screw hole 65 is formed in the bottom surface of the engaging recess 63, and a through hole 67 into which the bolt 66 can be inserted is formed in the engaging protrusion 64.
Both are connected by being screwed into.

When assembling such frame pieces 4a to 4h, a pair of frame pieces 4a to 4h are prepared, their ends are abutted against each other, and the respective engagement protrusions 67 are formed in the engagement recesses 63. It may be positioned at the opening edge, hit by a wood hammer or the like to be pushed into the engaging recess 63, and then the bolt 66 may be inserted into the through hole 67 and screwed into the screw hole 65.

As described above, the above assembling work is a simple work for engaging the engaging convex portion 67 with the engaging concave portion 63 and screwing them together, and therefore, this can be carried out easily.
Compared to the above-mentioned welding method, it can be installed without requiring various equipment. Moreover, frame pieces 4a to 4h made of synthetic resin
In this case, there are advantages that it is lightweight and convenient to carry and handle, and that it can be deformed relatively easily, so that flexibility in assembly can be obtained.

As another method of connecting the frame pieces 4a to 4h, in addition to tightening the bolts 66, the joint edges may be formed into various joints such as a Hoso joint that can be engaged with each other, or they may be combined. In the case of the resin frame pieces 4a to 4h, a method using welding or a binding tool is adopted. Alternatively, the ribs 61 and 62 may be omitted, and the joint portions of the frame pieces 4a to 4h may be mechanically coupled simply by screw connection with screws or bolts, rivet rivet connection, nail connection, or needle material connection. It is possible.

The frame pieces 4a to 4h assembled in this manner are prevented from coming off by the engaging force of the engaging convex portion 67 and the engaging concave portion 63, and are further firmly fixed by the bolts 66. The joining of the pieces 4a to 4h can be firmly maintained. Further, even if one of the pair of frame pieces is damaged, it can be removed and replaced, so that recovery work after an earthquake can be performed reasonably and quickly as compared with the welding method described above.

In each of the above-mentioned embodiments, the frame pieces 4c to 4c.
Although 4h is formed in a U-shaped cross section, this is because the bridge pier 1 has a rectangular cross section. In short, it may be formed in a half shape of the cross sectional shape of the pier 1. Further, the joints 6 of the reinforcing frames 4 adjacent to each other in the vertical direction are not connected, but if more sufficient rigidity is to be obtained, they may be connected by welding or the like.

The use and operation of the present invention thus constructed will be described based on the first embodiment shown in FIGS. 1 to 17. First, based on the underground and above-ground height and the cross-sectional shape of the pier 1 to be reinforced, the underground frame 4 (I) and the above-ground frame 4 (I
The shape and dimension of I) are determined, and the frame pieces 4a to 4h are manufactured.
In the case of the embodiment, the pier 1 includes the underground portion 1a and the above-ground portion 1b.
Since they have the same rectangular cross section, the underground frame 4 (I) and the above-ground frame 4 (II) are formed to have a square U-shaped cross section.

The underground frame 4 (I) is composed of a single frame body projecting above the ground beam 3 above the ground, that is, a pair of frame pieces 4a and 4b, the length of which is the same as that of the underground portion 1a. The above-ground protrusion height h is set to the length including the above-ground protrusion height h.
The desired height that can efficiently perform the construction of the
It is set to cm.

The above-ground frame 4 (II) is composed of three frames,
This is two frame bodies having the same length as the underground frame 4 (I), that is, two sets of frame pieces 4e to 4h, and a frame body slightly shorter than the underground frame 4 (I), that is, one set of frame pieces 4c, 4d. It consists of and. These frame pieces 4a to 4h are manufactured by cutting a steel plate into the length described above and press-molding this into a U-shaped cross section.

After molding, of the frame pieces 4a to 4f excluding the topmost frame pieces 4g and 4h, one frame piece 4a, 4 forming a pair.
A pair of joints 7 and 7 are provided on the inner and outer surfaces of both edges of c and 4d as shown in FIG.
2 and 13 as well as each frame piece 4a-4f
A pair of joints 8 and 8 are attached to the upper end of the as shown in FIGS. Further, a plurality of spacers 9 are attached to the inner surfaces of the frame pieces 4a to 4h as shown in FIGS.

The frame pieces 4a to 4f thus manufactured are attached to the pier 1
When installing on the ground, the ground part 1a and the above-ground part 1b are separately mounted. First, when mounting the underground portion 1a, the pedestal 11 is installed around the above-ground portion where the pier 1 is exposed.
A pair of frame pieces 4a, 4b that constitute the underground frame 4 (I) on top
Are stored in a standing position using a heavy machine such as a crane, and they are sandwiched from both sides of the pier 1, and their ends are butted. Then, while maintaining the above state, the joint portions 5 and 5 are welded to connect the frame pieces 4a and 4b in a tubular shape.

After the above connection, the frame 11 is removed and the frame piece 4 is removed.
Set a and 4b directly on the ground. In this case, the frame piece 4a,
Even if 4b is moved, spacers 9 attached to their inner surfaces
The leg piece 9a of the frame comes into contact with the pier 1, and the elasticity of the leg piece 9a causes the frame piece 4 to
A uniform gap 10 is formed between a and 4b and the pier 1.
After the standing, a plurality of vibration generators 12 are installed on the upper ends of the frame pieces 4a and 4b, and the inner surfaces of the frame pieces 4a and 4b are provided with the vibration generators 12 shown in FIG.
A high-pressure hose 13 communicating with a high-pressure water source is vertically piped through a plurality of mounting rings 41 such as No. 9, and an injection nozzle (not shown) provided at its discharge port is arranged facing the ground. This situation is as shown in FIG.

Under this condition, when the vibration generator 12 is driven and high pressure water is simultaneously supplied to the high pressure hose 13,
The high-pressure water collides with the ground, and the water flow disturbs the inside of the frame pieces 4a and 4b to promote the softening of the ground, and the low frequency vibration of the vibration generator 12 enhances the subsidence of the frame pieces 4a and 4b. This is gradually driven into the ground, and when the lower end reaches the underground beam 3, the driving is finished.

As described above, in the above-mentioned driving, a small and inexpensive equipment is sufficient as compared with the method using the excavating machine, and moreover, the excavation of the earth and sand and the laying of the frame pieces 4a and 4b can be carried out at the same time, so that the above-mentioned work can be carried out quickly. In addition, the working range is limited to a narrow range defined by the frame pieces 4a and 4b and the pier 1, so that the working range is reduced and the excavation amount is suppressed to a small amount.

After driving the frame pieces 4a and 4b, the vibration generator 12 is removed and the high pressure hose 13 is pulled out.
Transfer to installation of the ground frame 4 (II). At the time of this installation, a pedestal 11 is installed at the base of the pier 1 at a height substantially the same as the above-ground projecting height h of the frame pieces 4a, 4b, and a pair of frame pieces 4g, 4h arranged on the pedestal 11 at the uppermost position of the pier 1 Are accommodated in a standing position using a heavy machine such as a crane (not shown), and they are sandwiched from both sides of the pier 1 and their ends are butted. At that time, the frame piece 4 is placed between the joints 5 and 5 provided on the frame piece 4g.
Insert the ends of h and position them left and right,
Further, the lower end portions of the frame pieces 4g and 4h are inserted between the joints 8 and 8 provided on the upper end portions of the frame pieces 4a and 4b, and their upper and lower positions are positioned. After that, the joints 5 and 5 are welded to each other in the longitudinal direction via the welding machine 21 to connect them in a tubular shape. This situation is as shown in FIG.

After connecting the frame pieces 4g and 4h, the gantry 11 and the welding machine 21 are removed, and instead the reinforcing frame attachment device 14 is moved so that the suction device 18 is attached to one of the frame pieces 4g and 4h.
The work arm 17 is vertically lifted as shown in FIG. 4, and the frame pieces 4g and 4h are moved to a predetermined height, that is, the height required to carry in the next frame pieces 4e and 4f.
Lifting and temporarily fixing the positions of the frame pieces 4g and 4h by an appropriate means such as anchor bolts.

After that, the reinforcing frame mounting device 14 is withdrawn, and instead, the other frame pieces 4e, 4f are placed on the pedestals 11, 11 on both sides of the pier 1 using a heavy machine such as a crane (not shown). And squeeze them from both sides of the pier 1 and butt their ends together. At that time, the end portions of the frame piece 4f are inserted between the joints 5 and 5 provided on the frame piece 4e to position the left and right positions thereof, and the joints 8 and 8 provided on the upper end portions of the frame pieces 4a and 4b. The lower end portions of the frame pieces 4e and 4f are inserted between them to position them vertically. After that, these joints 5 and 5 are welded longitudinally via the welding machine 21,
These are connected in a tubular shape. This situation is as shown in FIG.

After connecting the frame pieces 4e and 4f, the gantry 11 and the welding machine 21 are removed, and instead the reinforcing frame attachment device 14 is moved to attach the suction device 18 to one of the frame pieces 4g and 4h. Then, when this is held, the anchor bolt is removed, the working arm 17 is slightly lowered, and the frame piece 4
The lower ends of g and 4h are inserted into the joints 8 and 8 provided on the upper ends of the frame pieces 4e and 4f, and their vertical positions are positioned.

After connecting the frame pieces 4e to 4h, the working arm 17
To lower the suction device 18 to one of the frame pieces 4e,
When mounted on 4f and held, the work arm 17 is vertically lifted as shown in FIG. 5, and the frame pieces 4e to 4h are integrally united to a predetermined height, that is, the height required to carry in the next frame pieces 4c and 4d. Then, lift up and temporarily fix the position with an appropriate means such as an anchor bolt.

After the temporary fixing, the reinforcing frame mounting device 14 is withdrawn, and the other frame pieces 4c and 4d are replaced by a crane (not shown).
Using a heavy machine such as the above, it is housed in the pedestals 11 and 11 on both sides of the pier 1 in a standing position, and these are sandwiched from both sides of the pier 1,
Butt their ends. At that time, the ends of the frame piece 4d are inserted between the joints 5 and 5 provided on the frame piece 4c to position the left and right positions thereof, and the joints 8 and 8 provided on the upper end portions of the frame pieces 4a and 4b. The lower end portions of the frame pieces 4c and 4d are inserted between them to position their upper and lower positions. After that, the joints 5 and 5 are welded to each other in the longitudinal direction via the welding machine 21 to connect them in a tubular shape. This situation is as shown in FIG.

The lower ends of the frame pieces 4c and 4d are attached to the frame pieces 4a and 4d.
It is inserted into joints 8 provided at the upper end of b, and the joint 6 is welded in the lateral direction to connect the frame pieces 4a to 4d.
After that, the reinforcing frame mounting device 14 is moved to move the suction device 18
Is attached to one of the frame pieces 4e and 4f, and when this is held, the anchor bolt is removed, the working arm 17 is slightly lowered, and the lower ends of the frame pieces 4e and 4f are attached to the frame pieces 4c and 4d. When inserted into the joints 8, 8 provided at the upper end of the frame, a series of assembling work of the frame pieces 4a to 4h is completed.
This situation is as shown in Fig. 6. After that, the gantry 11 and the welding machine 2
1 and are removed, and the reinforcing frame attachment device 14 is moved.

As described above, in the assembling of the ground frame 4 (II), the pair of frame pieces 4c to 4h are mounted on the pier 1 at a constant ground height and are sequentially moved upward.
As compared with the method of stacking up to 4h in order from the bottom, assembling the frame pieces 4c to 4h can be performed at a lower position, practically on the ground, can be performed safely and quickly without assembling scaffolding, and the working arm Since the vertical movement range of 17 is sufficient for the height of one of the frame pieces 4c to 4h, a low lift is sufficient, and the capacity of the reinforcing frame attachment device 14 can be reduced accordingly, and the equipment cost can be reduced. Further, since the above-described assembling work does not require welding or connection of the frame pieces 4a to 4h that are vertically connected to each other, the work can be performed easily and promptly and the construction cost can be reduced accordingly.

Thus, the underground portion 1a and the above-ground portion 1 of the pier 1 are
After mounting the reinforcing frame 4 over the entire area of b, a plurality of column clamps 22 are mounted at predetermined positions on the ground portion 1b. When the column clamp 22 is attached, the pair of clamp frames 23, 23 is temporarily fixed to a predetermined position of the reinforcing frame 4 via the magnet 26, the bolt insertion holes 24, 24 are aligned with each other, and the bolt 25 is attached to them. Insert it and tighten it with a nut (not shown) to fix it. In this way, since the clamp frame 23 can be temporarily fixed via the magnet 26,
The frame 23 can be easily positioned and fixed, and the rubber packing 23 makes contact with the pier 1
It is possible to prevent the occurrence of scratches on the peripheral surface.

After the column clamp 22 is attached, the mixer 35, the injection pump 34, the electric hose reel 31 and its support 32, etc. are installed near the bridge pier 1, and the motor 33 thereof is installed.
Reverse. In this way, the injection hose 29 wound on the reel 31 is unwound, and this is sent from the upper end of the reinforcing frame 4 to the gap 10 between the pier 1 and the reinforcing frame 4 and moves downward, The discharge port is at the lowest position of the gap 10,
That is, the motor 33 is stopped when it reaches the position directly above the underground beam 3.

Under this condition, when the motor 33 is kept powered on and the injection pump 34 is driven, the filler 28 contained in the mixer 35, in this embodiment, mortar is sent to the injection hose 29. This moves in the hose 29 and is discharged from the discharge port to fill the gap 10 from below. As the filling material 28 is filled, the filling level thereof gradually rises and flows into the discharge port of the injection hose 29, and when the pair of filling detection sensors 30 and 30 installed in the relevant portion is immersed in the filling material 28. , The sensor 3
0 and 30 detect the filling level of the filling material 28 and output the signal to the motor 33.

Therefore, the motor 33 rotates in the normal direction, the injection hose 29 is wound around the electric hose reel 31 and moves upward in the gap 10, and the discharge port thereof is pulled out from the filling material 28.
The motor 33 is driven by the signal for a certain period of time, and is stopped when the injection hose 29 has moved a certain distance above the filling material 28. Therefore, after this, the filling level rises, the filling material 28 flows into the discharge port of the injection hose 29 again, and the filling detection sensors 30 and 30 sink into the filling material 28. Of the filling hose is detected, the signal is output to the motor 33, and the motor 33 is driven to rotate in the normal direction to pull up the injection hose 29 by a predetermined distance.

As described above, since the filling hose 29 is automatically moved while the filling detection sensor 30 detects the filling level of the filling material 28, the positional relationship between the discharge port of the hose 29 and the filling level is determined. It is maintained normally, and reliable and smooth filling becomes possible. Further, since the discharge port of the injection hose 29 can be prevented from immersing in the filling material 28 for a long time, the pressure rise formed in the injection hose 29 can be avoided,
The occurrence of impact when pulling up the hose 29 is suppressed.

In this way, when the gap 10 is filled to the upper end, the filling of the filling material 28 is completed, and then the injection pump 34, the mixer 35, the electric hose reel 31 and the like are removed. In this case, the pressure in the gap 10 increases with the filling, but the peripheral surface of the reinforcing frame 4 is bound by the plurality of column clamps 22, so the reinforcing frame 4 is not deformed. After that, when the filling material 28 hardens, the reinforcing frame 4
And the pier 1 are integrated, and the strength of the relevant part is strengthened. In this case, since the gap 10 is formed uniformly around the pier 1 via the spacer 9, there is no uneven thickness of the filling material 28,
Therefore, the reliability of the strength of the part can be obtained.

After the filling material 28 is cured, the column clamp 22
By removing and coating the surface of the reinforcing frame 4, a series of reinforcing work is completed. In addition, in the above-described embodiment, the joint portions 6 of the vertically adjacent reinforcing frames 4 and 4 are in a non-connected state, but even in such a case, the periphery of the pier 1 is covered with the filling material 28, and the joints 8, 8 provides a constant connection strength. Therefore, the reinforcing frame 4 made of synthetic resin could be realized. Moreover, when an earthquake occurs, a certain degree of freedom can be obtained for the shaking of the reinforcing frame 4 at the position of the joint 6,
Compared to the case where the parts are welded and firmly connected, the pier 1
While flexibility and toughness can be obtained and seismic strength can be improved,
Even if the joint 6 is opened, the joint 5 is connected by welding or mechanical means, so that the situation where the stirrup and the concrete fall off from the joint 6 is stopped, and the desired effect is obtained. is there.

[0073]

As described above, according to the invention of claim 1, the cylindrical underground frame to be mounted in the underground portion of the pier is arranged around the pier, the underground frame is vibrated, and the underground frame and the pier are Since high-pressure water was pumped in between and the underground frame was sunk and placed, high-speed construction of the underground frame could be realized, downsizing of the equipment and cost of the equipment could be achieved, and the working range was between the underground frame and the pier. The work scale can be reduced only during the period, and the amount of excavation can be reduced. According to the invention of claim 2, since the upper end of the underground frame is projected to a predetermined height above the ground, the connection work with the above-ground frame can be easily performed. According to the invention of claim 3, the frame pieces of the above ground frames are joined at a pier position at a predetermined height above the ground, the joined ground frames are sequentially moved upward, and the ground frame immediately below is mounted to the above ground frame. By suppressing the moving range of the ground frame, it is possible to reduce the capacity of the moving device for this purpose. According to the invention of claim 4, since the ground frame is sequentially mounted from below, the frame can be mounted stably and reliably. According to the invention of claim 5, since the joining portions of the adjacent upper and lower reinforcing frames are in a non-connected state, there is an effect that flexibility and toughness can be obtained as compared with a pier having a rigid structure connecting these. According to the invention, the axial joints of the frame pieces are mechanically connected to each other by means of screw connection with bolts or screws, or by means of tacking, nailing, needle connecting, etc. Compared to the connection method described above, the connection can be performed more easily, and even after the connection, a part of the frame pieces can be replaced, so that they can be repaired rationally. According to the invention of claim 7, a plurality of engaging concave portions and engaging convex portions which can be engaged with each other are provided at the axial joint portion of the frame piece, and these engaging concave portions and the engaging convex portions are screw-connected. Therefore, the frame pieces can be firmly connected. According to the eighth aspect of the invention, since the movements of the engaging concave portions and the engaging convex portions are restrained through the engagement, the frame pieces can be connected before the screw connection. According to the invention of claim 9, since the pair of frame pieces is mainly composed of iron or iron-based metal or synthetic resin, mechanical connection of the frame pieces of various members is realized, and particularly, frame piece made of synthetic resin. In the case of, there is an effect that the weight is reduced, the handling is convenient, and the flexibility at the time of assembling is achieved. Claim 1
In the invention of No. 0, since the axial end portions of the pair of frame pieces made of synthetic resin are welded and connected, the frame pieces can be firmly connected. According to the invention of claim 11, the fixed frame provided with the anchor block is fixed to the peripheral surface of the pier, the reinforcing frame is arranged outside the fixed frame, and the frame is screw-connected through the block. The above-mentioned block can be made to function as a space holding member between the pier and the reinforcing frame while realizing simple attachment. According to the twelfth aspect of the invention, since a plurality of spacers that can be elastically displaced are provided on the inner surface of the reinforcing frame and the spacers are arranged so as to be engageable with the peripheral surface of the pier, a uniform interval is provided between the reinforcing frame and the pier. When formed, the filling material can be uniformly filled, and there is an effect that the reliability of the strength of the relevant portion can be obtained.
According to the invention of claim 13, an injection hose capable of discharging the filling material is provided so as to be vertically movable between the reinforcing frame and the pier, and a filling detection sensor is provided in the discharge port of the hose, and the injection hose is supplied via this detection signal. Since it is possible to move up, it is possible to fill the filler material smoothly, reduce the impact at the time of filling, and ensure the safety of work. According to the fourteenth aspect of the invention, since the reinforcing frame is bound through the column clamp having the magnet that can be attracted to the ground frame, the clamp can be easily and quickly attached. According to the fifteenth aspect of the present invention, the pair of work platforms can be connected with the bridge pier sandwiched therebetween, and the suction device can be moved toward and away from the pier, so that the work platform can be stably moved along the pier, The reinforcing frame can be installed neatly. According to the sixteenth aspect of the present invention, since the pair of worktables is provided and the worktables can be moved together with the suction device, the reinforcing frame can be efficiently attached.

[Brief description of drawings]

FIG. 1 is an explanatory view showing a first embodiment of the present invention, showing a situation before driving an underground frame.

FIG. 2 is an explanatory view showing the first embodiment of the present invention, showing a situation after driving of an underground frame.

FIG. 3 is an explanatory view showing the first embodiment of the present invention, showing an assembling state of the uppermost ground frame.

FIG. 4 is an explanatory view showing the first embodiment of the present invention, showing the assembling state of the next-stage ground frame.

FIG. 5 is an explanatory view showing the first embodiment of the present invention, showing an assembling state of the lowermost ground frame.

FIG. 6 is an explanatory view showing the first embodiment of the present invention, showing a situation where the assembling of all the ground frames is completed.

FIG. 7 is an explanatory view showing the first embodiment of the present invention, showing a situation in which the ground frame is bound by a column clamp.

FIG. 8 is an explanatory view showing the first embodiment of the present invention, showing a situation in which the peripheral surface of the ground frame is being coated.

9 is an enlarged cross-sectional view taken along the line AA of FIG.

10 is an enlarged cross-sectional view taken along the line BB in FIG.

FIG. 11 is a perspective view showing a main part of a suction device applied to the reinforcing frame mounting device of the present invention.

12 is an enlarged cross-sectional view taken along the line CC of FIG.

13 is a cross-sectional view showing an enlarged main part of FIG.

FIG. 14 is a front view showing a mounting state of a joint for positioning the vertical position of the ground frame.

15 is a cross-sectional view taken along the line DD of FIG.

FIG. 16 is a perspective view showing a column clamp applied to the first embodiment of the present invention. ,

FIG. 17 is an explanatory diagram showing a filling material filling detection mechanism applied to the first embodiment of the present invention.

FIG. 18 is a cross-sectional view showing a driving method of an underground frame applied to the second embodiment of the present invention, showing a state of arrangement of a vibration generator and a high pressure hose.

19 is an enlarged sectional view taken along the line EE of FIG.

20 is an enlarged cross-sectional view taken along the line FF of FIG.

FIG. 21 is a perspective view showing a reinforcing frame mounting device applied to a third embodiment of the present invention.

FIG. 22 is a perspective view showing a column clamp applied to a fourth embodiment of the present invention.

FIG. 23 is a perspective view showing a reinforcing frame attachment device applied to a fifth embodiment of the present invention.

FIG. 24 is a perspective view showing a method of attaching the ground frame, which is applied to the sixth embodiment of the invention.

FIG. 25 is an enlarged perspective view showing a main part of FIG. 24.

26 is an enlarged sectional view taken along the line GG in FIG.

27 is an enlarged cross-sectional view taken along the line HH of FIG. 25.

FIG. 28 is a sectional view of a pier showing a seventh embodiment of the present invention.

29 is a perspective view showing an enlarged main part of FIG. 28. FIG.

FIG. 30 is an enlarged cross-sectional view showing a main part of FIG. 28, showing a connection state of frame pieces.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bridge pier 4 Reinforcement frame 4a-4h Frame piece 4 (I) Reinforcement frame (underground frame) 4 (II) Reinforcement frame (ground frame) 5 Joint part 9 Spacer 13 High pressure hose 14,42,45 Reinforcement frame attachment device 18 Adsorption device 26 Magnet 30 Filling Detection Sensor 44, 48 Work Table 51 Fixed Frame 54 Anchor Block 63 Engagement Recess 64 Engagement Convex

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Taro Shimohira 2-3-5 Misaki-cho, Chiyoda-ku, Tokyo Steel Construction Co., Ltd. (72) Inventor Masaharu Saito 2 Misaki-cho, Chiyoda-ku, Tokyo 5th-3th Iron Construction Co., Ltd. (72) Inventor Shigeru Matsuoka 2-3-5th Misakicho, Chiyoda-ku, Tokyo Inside Steel Construction Co., Ltd.

Claims (16)

[Claims] 1. A method of reinforcing a pier, wherein a reinforcing frame is attached to the peripheral surface of the pier, and a filling material is filled between the frame and the pier,
A cylindrical underground frame to be installed in the underground part of the pier was placed around the pier, the underground frame was vibrated, and high-pressure water was pumped between the underground frame and the pier, and the underground frame was sunk. Reinforcement method for piers characterized by this. 2. The method of reinforcing a pier according to claim 1, wherein the upper end of the underground frame is projected to a predetermined height above the ground. 3. A bridge pier in which a plurality of above-ground frames in which a pair of half-frame-shaped frame pieces are connected in a tubular shape are superposed on the above-ground portion of a pier and the filler is filled between the frames and the pier. In the reinforcement method,
Reinforcement of piers, characterized in that the frame pieces of each above-ground frame are connected at a pier position at a predetermined height above the ground, the connected above-ground frame is moved upwards in sequence, and the above-ground frame immediately below is attached to the above-ground frame. Construction method. 4. A bridge pier in which a plurality of above-ground frames in which a pair of half-divided frame pieces are connected in a tubular shape are superposed on the above-ground portion of the pier and the filler is filled between the frames and the pier. In the reinforcement method,
The method for reinforcing a pier according to claim 1, wherein the above-mentioned frame is sequentially mounted from below. 5. A reinforcement method for a bridge pier in which a plurality of reinforcing frames are vertically stacked on the peripheral surface of the bridge pier, and a filling material is filled between the frames and the bridge pier. Reinforcement method for bridge piers with joints not connected. 6. A pier for mounting a pair of half-divided frame pieces on the peripheral surface of the pier, connecting axial end portions of the frame pieces, and filling a filling material between the frame and the pier. In the reinforcement method, a reinforcement method for a bridge pier in which the axial joints of the frame pieces are mechanically connected to each other by means of screw connection with bolts or screws, or by means of rivets, nails, needles or the like. 7. A bridge pier in which a pair of half-shaped frame pieces are attached to the peripheral surface of the pier, the axial ends of the frame pieces are connected, and a filler is filled between the frame and the pier. In the reinforcing method, a plurality of engaging concave portions and engaging convex portions that can be engaged with each other are provided at the axial joint portion of the frame piece, and the engaging concave portions and the engaging convex portions are screw-connected. Reinforcement method for piers described in 6. 8. The engagement concave portion and the engagement convex portion are engaged with each other,
The method for reinforcing a pier according to claim 7, wherein the movement of the piers is restricted. 9. The method of reinforcing a pier according to claim 6, wherein the pair of frame pieces are made of metal or synthetic resin. 10. The method for reinforcing a pier according to claim 9, wherein the pair of synthetic resin frame pieces are welded together at their axial ends and joined together. 11. A fixed frame provided with an anchor block is fixed to a peripheral surface of a pier, and a reinforcing frame is arranged outside the fixed frame,
The method of reinforcing a pier according to claim 3, wherein the frame is connected by screw means through the block. 12. The method of reinforcing a pier according to claim 1, wherein a plurality of elastically displaceable spacers are provided on the inner surface of the reinforcing frame, and the spacers are arranged so as to be engageable with the peripheral surface of the pier. 13. An injection hose capable of discharging a filling material is provided so as to be vertically movable between a reinforcing frame and a pier, a filling detection sensor is provided in the discharge port of the hose, and the injection hose is lifted via this detection signal. The method of reinforcing a pier according to claim 1, wherein the pier reinforcement method is movable. 14. The ground frame is bound by a column clamp having a magnet capable of being attracted to the reinforcing frame.
Reinforcement method for piers described in 6. 15. A reinforcement frame mounting device comprising a vertically movable work platform and a suction device capable of holding a reinforcement frame, wherein a pair of work platforms can be connected with a bridge pier sandwiched therebetween, and the suction device is attached to the bridge pier. Reinforcement frame mounting device characterized in that it can be moved toward and away from the frame. 16. The reinforcing frame mounting device according to claim 15, further comprising a pair of worktables, the worktables being movable together with the suction device.