KR100380563B1 - Apparatus to reinforce the footing part of pier and thereof method - Google Patents

Abstract

The present invention relates to an underwater pier foundation reinforcement device and a reinforcement method, and a well barrel consisting of a pair of semi-powder to which a reinforcing frame is coupled to the formwork of the semi-cylindrical body and a pipe to which a plurality of nozzles are fixed to the lower end is coupled. A plurality of buckets are installed at equal intervals to the outside of the well bucket assembly formed by coupling at least one step to the outside of the base portion of the piers are configured to include an underwater observation device to observe the underwater working process.

The well reinforcement method according to the present invention comprises the steps of assembling at least one step of the well barrel consisting of a pair of semi-powder in which the reinforcing frame is arranged inside the formwork of the semi-cylindrical body and a plurality of pipes are fixed around the base of the piers; Spraying compressed fluid from the lower end of the well through a plurality of pipes and nozzles to dig the river bottom around the foundation and seating the well; and after the well is buried in the river bottom, the inside of the well Placing an underwater concrete layer on the bottom, and after the underwater concrete layer is cured, discharging the water inside the well, and placing and reinforcing the ground concrete inside the well; It is composed.

The present invention can not only easily install the well, but also firmly installed to a certain depth, since the concrete is poured into the well of the well installed in this well can be prevented defects that occur when the concrete leaks In addition, it is possible to perform the construction very safely since all the work performed underwater is recorded and observed on the water by the underwater observation device while conducting the operation under the directing and supervision.

Description

Underwater piers foundation reinforcement device and reinforcement method {APPARATUS TO REINFORCE THE FOOTING PART OF PIER AND THEREOF METHOD}

The present invention relates to an underwater piers foundation reinforcement device and a reinforcement method, and in particular, a well barrel, in which a reinforcing frame is coupled to two sets of semi-circular formwork and an injection pipe for injecting compressed fluid, is assembled outside the base of the piers. After digging the bottom by spraying the compressed fluid from the bottom nozzle of the well, the well is allowed to settle by self-weight, and then the water drainage, underwater concrete casting, and ground concrete casting of the well are carried out. The present invention relates to an underwater piers foundation reinforcement apparatus and a reinforcement method for repairing and reinforcing the foundation part of the foundation.

In general, the foundation of reinforced concrete bridge piers of various bridges with long-term use, external impact, scour due to high flow rate friction, concrete corrosion due to neutralization, concrete corrosion due to water pollution, defects due to poor construction, concrete It is damaged due to deterioration of the equipment, and if it is not timely repaired, it is in danger of collapse.

In order to reinforce the foundation of damaged pier, the steel and F.R.P formwork are installed and repaired and reinforced by the method of pouring underwater concrete using products that do not separate aggregates in water.

In the conventional well-well reinforcement method, if the floor is not fixed at the position where the formwork is to be submerged, it is difficult to arrange the ground by diving workers to flatten it, and then to settle the form and secure a constant depth of the bottom of the water. The part where the concrete can leak out is blocked by using the bag concrete, and then the underwater concrete is poured.

The conventional well-pit reinforcing method as described above is difficult to perform a reliable construction due to the difficulty of the subfloor work, there was an unstable problem, because the concrete leaks due to the pressure during the concrete pouring, can occur a joint phenomenon, As a result, there is a problem in that the failure of the aggregate separation, there is a problem that causes the defect, as well as it is impossible to see all the work in the water on the water, so that the work supervision instructions are not made, there is a problem of poor construction.

The present invention has been devised to solve such problems and defects, the well is coupled to the reinforcement frame to two sets of semi-circular formwork, and the well pipe combined with the injection pipe for injecting compressed fluid, the outer side of the piers The bottom of the well by the weight of the well and let the water settle down by self-weight, and then drain the water inside the well, underwater concrete and ground concrete It is to provide an underwater pier foundation reinforcement apparatus and reinforcement method that can be performed to repair and reinforce the foundation of the pier.

1 to 8 is a view showing the configuration of the construction device for reinforcement according to the present invention,

1 is a cross-sectional view showing the configuration of a construction device for reinforcement according to the present invention.

2 is a cross-sectional view taken along the line A-A of FIG.

3 is a partial perspective view of a well bucket which is a main part of the present invention;

Figure 4 is a perspective view of the "B" portion of Figure 3 showing the shape of the reinforcing bar in the formwork of the well.

Figure 5 is a perspective view of the "C" part of Figure 3 showing the coupling form of the nozzle is coupled to the lower end of the well.

Figure 6 is a perspective view showing the configuration of the underwater observation device.

FIG. 7 is a cross-sectional view taken along the line D-D of FIG. 6. FIG.

8 is an explanatory view showing a construction example of the well reinforcement method according to the present invention.

<Description of the reference numerals for the main parts of the drawings>

1: pier 2: foundation

10: underwater concrete layer 100: well

100 ': Semi-powder 100 ": Well sump assembly

110: formwork 120: steel frame

130 pipe 131 nozzle

140: distribution pipe 141: inlet

142: inlet 200: underwater observation device

210: support body 220: underwater camera

230: lighting

In order to achieve the above object, a factory for reinforcing a well bucket according to the present invention comprises a pair of wells consisting of a pair of semi-powders in which a steel frame is coupled to a mold of a semi-cylindrical body and a pipe in which a plurality of nozzles are fixed to a lower end thereof. In addition, a plurality of wells are installed at equal intervals to the outside of the well assembly formed by combining at least one step outside the base portion of the piers are configured to include an underwater observation device to observe the underwater working process.

The formwork is formed of a steel sheet or FRP, and is formed by forming flanges for fastening bolts on both side edges and upper and lower edges.

The underwater observing apparatus is configured by combining an underwater camera and a lamp at a lower portion of each support tube fixed to the outside of the well assembly.

A distribution pipe having a plurality of inlets is coupled to an upper end of the upper well, and a compression fluid supply hose for supplying a high pressure compressed fluid from a jet pump is connected to an inlet of the distribution pipe, and each inlet of the distribution pipe is connected. It is provided with a solenoid valve for opening and closing the injection of the compressed fluid is configured so that the compressed fluid is injected in whole or in part to each pipe.

The well reinforcement method using the factory reinforcement of the present invention as described above at least around the base of the piers wells consisting of a pair of semi-powder in which the reinforcing frame is arranged inside the mold of the semi-cylindrical structure and a plurality of pipes are fixed Assembling one or more stages, and spraying the compressed fluid from the lower end of the well through a plurality of pipes and nozzles to dig the river bottom around the foundation and seating the well, and the well being buried in the river bottom. Thereafter, placing an underwater concrete layer on the inner bottom of the well, and after the underwater concrete layer is cured, discharging water inside the well, and placing ground concrete inside the well It is configured to include the step of reinforcing.

Hereinafter, the embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 to 6 is a view showing the configuration of the construction apparatus for reinforcement according to the present invention, Figure 1 is a cross-sectional view showing the configuration of the construction apparatus for reinforcement according to the present invention, Figure 2 is a cross-sectional view taken along line AA of FIG. 3 is a partial perspective view of a well bucket which is a main part of the present invention, FIG. 4 is a perspective view of the portion “B” of FIG. 3 showing a shape of reinforcing the reinforcing bars in the formwork of the well, and FIG. 5 is coupled to the lower end of the well. 3 is a perspective view of part “C” of FIG. 3 showing a coupling form of the nozzle, FIG. 6 is a perspective view showing the configuration of the underwater observation device, FIG. 7 is a sectional view taken along line DD of FIG. 6, and FIG. An explanatory diagram showing an example of construction of a well reinforcement method according to the invention is shown.

First, referring to FIGS. 1 and 2, in the drawing, 1 shows a pier, and the pier 1 is composed of a foundation part 2, a column part 3, and a coping part 4, and a pier 1. The bridge top plate 5 is coupled to the coping portion 4 of the, and the well 100 is wrapped around the base portion 2 of the bridge (1) is coupled to form.

Hereinafter, referring to FIGS. 1 to 5, the well container 100 is formed by combining two sets of semi-cylindrical semi powders 100 ′, and the semi-powder 100 ′ of the well container 100 is formed of a formwork. It is formed by reinforcing the reinforcing frame 120 on the inner side of the 110, the circular pipe 130 is configured to be coupled in the longitudinal direction at regular intervals.

The formwork 110 is formed of a steel sheet or F.R.P, the flange 111 is formed on both side edges and the upper and lower edges. A plurality of fixing rods 121 are fixed to the formwork 110, and the fixing rods 121 are disposed in the widthwise reinforcing bars 122 and the longitudinal reinforcing bars 123 at regular intervals and are bundled with the bundle line 124. In addition to being fixed, the pipe 130 is bundled and fixed by the bundle line 124.

The fixing rod 121 is fixed to the formwork 110 by screwing or welding. For example, when the formwork 110 is made of FRP, a plurality of holes are formed in the formwork 110 and the ends of the fixing rods 121 are formed by fastening with nuts 125 and the formwork 110 is fastened. In the case of a steel plate, the fixing rod 121 is welded and fixed.

The form of coupling the reinforcing frame 120 and the pipe 130 need not be limited to the above example, and may be applied in various other forms.

The well 100 is stacked in multiple stages, for example, three stages outside the base portion 2 of the pier 1, as shown in Figs. 1 and 2, the pipe coupled to the formwork 110 at the bottom ( As shown in FIG. 3, the nozzle 131 is fixed to the lower end of the 130, and the underwater observation device 200 is installed outside the well bucket assembly 100 ″ formed by combining the well bucket 100 in multiple stages. The pipe 130 and the nozzle 131 serve to dig out the high pressure fluid by spraying the lower periphery of the base portion 2 of the river bottom.

The upper end of the upper well 100, the distribution pipe 140 is provided with a plurality of inlet 141 is coupled, the inlet 142 of the distribution pipe 140 of the high pressure from the jet pump (not shown) A compressed fluid supply hose 8 for supplying a compressed fluid such as air is connected. Each injection hole 141 of the distribution pipe 140 is provided with a solenoid valve for opening and closing the injection of the compressed fluid can be adjusted so that the compressed fluid is injected in whole or in part to each pipe (130).

The pipes 130 coupled to the wells 100 of each stage are connected via the coupling 132, and the inlet 141 of the upper pipe 130 and the distribution pipe 140 is also coupled to the coupling 132. Connected via.

1 and 6, the underwater observing apparatus 200, a plurality of (four in the figure) the support tube 210 is fixed to the outside of the well assembly (100 ") at regular intervals, The lower side of each support tube 210 is coupled to the underwater camera 220 and the lamp 230 is configured to observe the lower side of the well assembly assembly 100 "from the outside.

The underwater observing apparatus 200 is provided with a plurality of, for example, four at equal intervals around the pier 1 as shown in FIG. 2 so that the entire observation around the base portion 2 of the pier 1 can be observed. .

The support pipe 210 is a guide pipe 212 is welded to the support pipe 211, the detent 213 is coupled to the lower end, the detent 213 is a wedge-shaped fixed angle 214 is formed by the steel bottom It is deeply inserted into and is fixed stably. The upper end of the support tube 210 is stably fixed to the column portion 3 of the piers 1 by a fixing means 240 at regular intervals.

A guide groove 212A is formed in a guide pipe 212 of the support pipe 210, and a slider 215 is inserted into the guide pipe 212, and fixed to the outside of the slider 215. The underwater camera 220 and the lamp 230 are coupled to the installation plate 216, thereby allowing the position of the underwater camera 220 and the lamp 230 to be adjusted up and down.

The guide tube 212 of the support pipe 210 is inserted into a plurality of strands of wires 9 connected to the control computer and the power supply, respectively, and the lower end is connected to the underwater camera 220 and the lamp 230.

The contact plate 217 of the slider 215 and the mounting plate 216 is coupled to the contact plate 217A, and a tightening nut 217B for screwing the contact plate 217A onto the mounting plate 216 is screwed up and down. By adjusting the position of the underwater camera 220 and the lamp 230, and tightening the tightening nut 217B to fix the close contact plate 217A to the guide tube 212 to maintain a stable position have. In Fig. 6B, reference numeral 217C shows a spring washer.

The fixing means 240 is fixed to the inner annular ring 241 to the column portion 3 of the pier 1, the outer annular ring 242 to the fastening member 243 to the outside of the inner annular ring 241. The upper end portion of the support tube 211 of the support tube body 210 is fastened to the outer annular band 242 by the fastening member 243.

The fastening member 243 consists of both bolts 243A and 243B and a socket 243C in the middle portion, thereby rotating the sockets 243C so that both bolts 243A and 243B are stretched and coupled. I can regulate it. The fastening member 243 for fixing the support tube 211 of the support tube body 210 to the outer annular stand 242 may be fixed by welding the outer bolt 243B directly to the support tube 211. It is slidably coupled to the tube 211 and can be fixed by being welded to the inner side of the adjustment ring 243E, which is fixed by bolts 243D.

In FIG. 1, reference numeral 6 denotes a drain hose for draining water inside the well assembly assembly 100 "by a pumping pump, and FIG. 7 illustrates a hose for transporting ready-mixed concrete for transporting ready-mixed concrete from the ready-mixed truck. will be.

The well-hole reinforcement method using the factory reinforcement of the present invention as described above, the step of cleaning around the base portion (2) of the pier (1) to be reinforced, and the steel frame 120 in the form 110 of the semi-cylindrical Lift the well bucket 100 consisting of a pair of semi-powder 100 ′ in which the plurality of pipes 130 are fixed and fixed, is assembled at least one step around the base portion 2 of the piers 1 by a crane. And spraying the compressed fluid pumped by the jet pump through the plurality of pipes 130 and the nozzles 131 to dig the river bottom around the base 2 to seat the well 100. And, the step of observing the process of installing the well 100 with the underwater observation device 200 installed around the pier (1), and after the well 100 is buried in the river bed, the well Pouring the underwater concrete layer (10) to the inner bottom of the (100) and the underwater concrete After the layer 10 is cured, pumping and discharging the water in the well 100 with a pumping pump, and cleaning the inside of the well 100 again using water pressure, and It is configured to include the step of reinforcing the ground concrete inside the (100).

Hereinafter, a more detailed description of the well-pipe reinforcement method of the present invention as described above as follows.

First, by using a jet pump by the submersible worker to clean and clean up around the foundation 2 of the pier (1), of course, by neutralizing the corrosion of concrete to increase the adhesion of old and new concrete.

Subsequently, the semi-powder 100 'of the well 100 manufactured as shown in FIG. 3 is moved to the lower part of the piers 1 using a crane, and as shown in FIG. 1 and FIG. Push in both sides of the foundation (2) and bolted tightly to the flange 111 formed on the periphery of both ends, and in the same way well according to the height of the foundation (2) to be reinforced of the piers (1) 100) are stacked in multiple stages, for example, three stages to assemble the three stage well barrel assembly 100 &quot;, and bolted to the flange 111 formed at the periphery of the upper and lower ends of the well cylinders 100 at each stage for firmness. In addition to the assembly, the pipe 130 coupled to the well 100 of each stage is connected by inserting a coupling pipe 132 for a conventional pipe connection.

After combining the three-stage well 100 as described above, as shown in Figure 8a, by driving the jet pump to pump the compressed fluid is coupled to a plurality of pipes 130 through the compressed fluid supply hose (8) It is supplied to the plurality of pipes 130 through the distribution pipe 140, and sprayed at a high pressure through the nozzle 131 coupled to the lower end of each pipe 130, as shown in Figure 8b, around the base 2 As well as the riverbed is cleared, the riverbed is dug into a certain depth, the three-stage well 100 is seated at a certain depth in the ground by its own weight.

As such, the process of installing the well 100 is performed while observing by the underwater observation device 200, and illuminates the lower part of the piers 1 with an illuminating lamp 230 coupled to the lower end of the support tube 210. By taking a picture of the camera 220 and receiving this signal to the control computer to record and manage the work as well as to display on the monitor it is possible to securely and accurately seat the well (100) while observing the work situation.

As a result of observing with the underwater observation device 200 in the process of installing the well 100, if the bottom is less dug, the part which is not carved by opening and closing the solenoid valve coupled to the inlet 141 of the distribution pipe 140 The compressed fluid is concentrated in the air to be further excavated, and if it is determined to be partially necessary, the diving worker can be smoothly put into operation.

Without the above-described underwater observation device 200, there is a risk of poor construction because it is impossible to see on the water and work supervision is not made, but the underwater observation device 200 can be a good construction because it can observe the work under water in detail. Contribute to help.

As shown in FIG. 8B, after the well bucket 100 is buried to a depth of about 50 cm under water, the concrete ready to be supplied from the ready-mixed truck through the ready-mixed concrete transport hose 7 lowered to the bottom of the well bucket 100 is concrete. Using only the self-weight of the to put a thickness of, for example, 30 ~ 50cm from the bottom to pour the concrete layer 10 underwater.

After about 24 hours, the drain hose 6 is inserted into the well 100, and the water in the well 100 is pumped and discharged by the pump, and the water tank 100 is discharged using water pressure. Clean the inside of) again.

Subsequently, by pouring the concrete 11 for land, not underwater concrete, as shown in FIG. 8C, the piers 1 can be completely reinforced.

The present invention as described above forms a reinforcing bar in the formwork to form a reinforcement frame and form a well barrel semi-powder in which a nozzle for spraying compressed fluid is coupled to a pipe fixed to the lower end, and then assembled outside the base of the piers. Then, by spraying the compressed fluid at the lower end of the well, the bottom of the well is excavated by digging the bottom, so that the well can be easily installed as well as firmly installed to a certain depth. Underwater concrete is placed inside a well-mounted well, which not only prevents leaks caused by concrete leaks, but also directs and supervises all underwater operations by recording and observing them under water. Since work is performed, construction can be performed very safely. As a result, the present invention can not only reduce construction period, cost, and manpower, but also improve repair and reinforcement so that the bridge can be used safely in the long term, thus improving the competitiveness and reliability of the repair reinforcement method. Has the effect of improving.

Claims (6)

Reinforcing frame is coupled to the form of the semi-cylindrical body and a plurality of nozzles are made of a pair of semi-powder is coupled to the pipe fixed to the lower end, and the well is formed by coupling at least one step outside the base of the piers Underwater pier foundation reinforcement device characterized in that it comprises a plurality of observing device that is installed at equal intervals to the outside of the well assembly to be able to observe the underwater working process. The method of claim 1, wherein the formwork is formed of a steel sheet or FRP, underwater bridge foundation reinforcement device characterized in that the flanges for fastening bolts are formed on both side edges and the upper and lower edges. The underwater pier foundation reinforcement apparatus of claim 1, wherein the underwater observing apparatus is configured by combining an underwater camera and a lighting unit at a lower side of each support tube fixed to the outside of the well assembly. According to claim 1, wherein the upper end of the upper well is a distribution pipe having a plurality of inlet is coupled, the inlet of the distribution pipe is connected to a compression fluid supply hose for supplying a high pressure compressed fluid from the jet pump, Each injection port of the distribution pipe is provided with an solenoid valve for opening and closing the injection of the pressurized fluid underwater piling foundation reinforcement device, characterized in that the compressed fluid is injected in whole or in part to each pipe. Assembling at least one stage of a pair of semi-powder wells in which a reinforcing frame is arranged inside the form of the semi-cylinder and fixed to a plurality of pipes around the foundation of the piers; Spraying at the bottom of the well through the bottom of the well while digging the river bottom around the foundation portion, and the well is buried in the river bottom, and pouring an underwater concrete layer on the inner bottom of the well And, after the underwater concrete layer is cured, discharging the water inside the well bucket, and reinforcing the underwater concrete foundation by pouring concrete for the ground inside the well bucket. Method. The crane according to claim 5, further comprising: cleaning a circumference of the foundation of the piers to be reinforced, and a pair of wells consisting of a pair of semi-powders in which a steel frame is arranged inside a form of a semi-cylindrical body and a plurality of pipes are fixed. Assembling at least one stage around the foundation of the piers; and spraying the compressed fluid pumped by the jet pump through a plurality of pipes and nozzles to dig the river bed around the foundation and seat the well; And observing the process of installing the well by an underwater observing apparatus installed around the pier, and after the well is buried in the river bed, placing an underwater concrete layer on the inner bottom of the well; After the underwater concrete layer is cured, pumping and discharging the water inside the well tank with a pumping pump, and using the water pressure of the well bucket Underwater pier foundation reinforcement method comprising the step of cleaning the inside again, and the step of reinforcing by placing concrete for the ground inside the well.