KR20020060351A - Pier revolution apparatus and T-type pier construction method using the same - Google Patents

Abstract

PURPOSE: A pier revolving device is provided to gain flexibility and ductility and construct a structurally stabilized T-type pier by installing temporary timbering in line with traffic flow and rotating upper column to the direction. CONSTITUTION: The pier revolving device comprises the following devices as an upper revolving device(10) that is circular closure shape on the whole, which upper plate hole(13) of constant diameter continues to lower center part of the upper plate(11), and extruded at constant thickness, a lower revolving device(20) that is circular plate shape on the whole, digged a rotating disk hole(21) with insertable diameter of the rotating disk in the middle of upper center part to lower plate at constant diameter, sealing materials(30) inserted along contact parts of revolving disk(12) of the upper revolving device(10) and revolving disk holes(21) of the lower revolving devices(20), and plural oil pipes(40) vertically penetrated from lower part of the lower revolving device(20) to revolving disk holes(21).

Description

Pier revolution apparatus and T-type pier construction method using the same

The present invention relates to a bridge rotating apparatus and a T-type bridge construction method using the same. More specifically, by installing the coping part temporary coping part of the T-type bridge at the right angle to the traffic flow direction during the construction of the T-type bridge, to prevent extreme traffic congestion and consequent interruption of work process and extension of air. , T-beams are completed to match the traffic flow direction, and only the upper part (upper column and coping part) of the T-beam bridge using the pier rotating device (direction or constant angle corresponding to the traffic flow) To a pier rotating device and a T-type bridge construction method using the same.

In the case of overpasses and bridges constructed in a conventional urban area, the pier among the substructures (such as alternating bridges and bridge piers) uses a lot of T-type bridges. However, the biggest problem in the construction of the T-type bridge piers, as can be seen in Figure 1a, by installing a temporary copper bar (2) for the construction of the coping portion of the T-type bridge (1) perpendicular to the traffic flow direction to the lane of the existing road It is inevitably occupied, causing severe traffic jams during construction and consequently enormous social and economic costs.

Accordingly, the present inventors have installed a pier rotating device in a direction coinciding with the traffic flow direction as shown in FIG. 1B to divide the T-type pier (1) into two pillars (including a coping part) and a lower column. After construction by using, by rotating the upper column (including coping part) of the completed T-beam pier in the desired direction (direction of traffic flow or direction with a certain angle with the traffic flow direction), T-type without causing traffic jam The piers rotating device that can construct the piers and the T-type piers construction method using the piers were developed.

An object of the present invention is to install a temporary bridge for the construction of the coping portion of the T-type pier in the direction coinciding with the traffic flow in order to construct a T-type pier, only the upper column (including the coping portion) of the T-pier pier traffic flow Pier rotating device which does not cause traffic jam by temporary construction bar installed at right angle with traffic flow direction by fixing by rotating in the direction coinciding with the direction or the direction with traffic flow and fixed angle and T-type bridge using the same It is to provide a hypothesis.

Another object of the present invention is to install a pier rotating device used to rotate the upper pillar (including the coping portion) of the T-pier pier in the middle portion of the steel pipe embedded inside the T-pier, the steel pipe is integral with the T-pier It is to provide a bridge rotating device and a bridge construction method using the same to ensure the durability, flexibility and toughness of the T-type bridge piers.

Still another object of the present invention is to provide a pier rotating device and an pier construction method using the same, which provide an optimal rotational force and a magnitude of hydraulic pressure applied to the pier rotating device to rotate the T-pier.

FIG. 1a is a state diagram of a conventional T-type pier construction method in which the installation direction of the temporary copper bar used for the T-type bridge construction is installed at right angles to the traffic flow direction to hinder traffic flow.

Figure 1b is a state diagram of the T-type pier construction method of the present invention is installed so that the installation direction of the temporary copper bar used in the T-type bridge construction coincides with the traffic flow direction does not interfere with the traffic flow.

Figure 2a is an exploded perspective view of the pier rotating device of the present invention.

Figure 2b is a combined perspective view of the pier rotating device of the present invention.

2C is a cross-sectional view of the pier rotating device of the present invention.

3a is a plan view of the pillar connecting device of the present invention.

Figure 3b is a perspective view of the T-shaped support plate constituting the pillar connecting device of the present invention.

4A to 4H are flowcharts of a construction method for constructing a T-type pier using the pier rotating device of the present invention.

<Description of Major Codes in Drawings>

1: T-type pier

10: upper rotating device 11: upper plate

12: rotating plate 13: upper plate hole

20: lower rotating device 21: rotating plate hole

22: bottom plate hole 30: sealing material

40: oil pipe 100: pier rotating device

200: pier foundation 201: steel pipe

202: lower column rebar 203: position fixing plate

204: lower pillar 205: pillar connecting device

206: upper column 207: hydraulic device

208: Rebar joint device 209: Formwork connection

210: spacer member of the pillar connector 211: support plate of the pillar connector

212 ring of the column connecting device 213: upper column rebar

The present invention will be described in detail with reference to the drawings.

Figure 2a is an exploded perspective view of the pier rotating device 100 of the present invention, Figure 2b is a combined perspective view of the pier rotating device 100, Figure 2c is a cross-sectional view of the pier rotating device 100 of the present invention.

As shown in FIG. 2A, the pier rotating device 100 includes an upper rotating device 10, a lower rotating device 20, a sealing material 30, and an oil pipe 40, as shown in FIG. 4A. It is installed in the middle portion of the 201, it is a device that can rotate the upper pillar 206 formed on the pier rotating device 100 as shown in Figure 4e. 2 is formed in a circular shape, but may be formed in a square or a regular polygon. Hereinafter, the circular pier rotating device 100 will be described.

The upper rotary device 10 is a circular stopper as a whole, consisting of the upper plate 11 and the rotating plate 12 and is welded to the middle portion of the steel pipe 201 as shown in Figure 4a.

The upper plate 11 is a circular plate, the upper surface of the circular upper plate hole 13 is excavated with a constant diameter, the lower surface has the same diameter as the upper plate hole 13 and the rotating plate protruding to a constant thickness (12) is formed. The upper plate hole 13 serves to reduce the weight of the pier rotating device 100 of the present invention and an anchor to be described later may be installed.

The rotary plate 12 is inserted into the rotary plate hole 21 of the lower rotary device 20 to be described later by protruding continuously on the lower surface of the upper plate 11. Therefore, when the outer circumferential surface of the rotating plate 12 is in contact with each other, the inner circumferential surface portions of the rotating plate hole 21 of the lower rotating device 20 are applied to the pier rotating device 100 with a rotational force exceeding the frictional force of the contact portion. As described above, the upper column 206 including the upper rotating device 10 is rotated.

The lower rotating device 20 is a circular plate having an overall shape, and a rotating plate hole 21 is formed on an upper surface thereof, and a lower plate hole 22 is formed on a lower surface thereof. And, the anchor to be described later may be installed.

The rotating plate hole 21 is inserted into the rotating plate 12, the bottom portion is provided with an oil pipe 40 which will be described later is filled with oil (oil), and also the inner peripheral surface is filled with oil to reduce the friction of the contact surface. As shown in FIG. 4E, the oil is filled with hydraulic pressure by a hydraulic device to secure a buoyancy of a size capable of lifting the weight of the upper pillar 206. Therefore, the rotational force for rotating the upper pillar 206 in the desired direction can be significantly reduced.

Since the sealing material 30 is filled with oil while the oil is applied to the lower rotating device 20 through the oil pipe 40, oil does not leak from the contact portion between the rotating plate hole 21 and the rotating plate 12 by hydraulic pressure. For this purpose, a circular sealing material 30 is used as shown in Fig. 2C. Sealing material 30 may be a durable rubber or metal ring may be used.

The oil pipe 40 is vertically penetrating the lower plate hole 21 formed in the lower surface of the lower rotating device 20 in Figure 2b is formed in an inverted 'b' shape, but the amount of hydraulic and oil of the desired size One or more oil pipes 40 may be installed at various parts of the upper and lower rotating devices 10 and 20 to fill the oil, and serve to transfer oil to the lower rotating device 20 together with hydraulic pressure. One end of the oil pipe 40 protrudes outward from the lower column 204 and the hydraulic device 207 is connected to the protruding end to apply oil to oil.

Although not shown in the drawing, the hook-shaped anchor is fixed to the upper and lower rotating devices 10 and 20 so as to be buried in the concrete of the upper and lower pillars to fix the pier rotating device 100 to the T-type pier. Multiple can be installed.

The pier rotating device 100 can be produced by structural forged steel used as structural steel (SM 45 C),

The oil flowing into the oil pipe 40 uses a product (SUPER HYDRO AW) that satisfies the viscosity index 105, specific gravity (0.865), flash point (220 ° C), and water content (100PPM).

Sealing material 30 is preferably used to satisfy the material (NBR, TEFRON in the case of rubber), operating temperature (-70 ~ 260 ℃), elongation (200-400), tensile strength (140-350 Kg / ㎠) Do.

T-type pier construction method using the pier rotating device 100 of the present invention,

1 step of digging the land of the site where the bridge foundation 200 is to be formed;

Step 2 to install the bridge foundation formwork on the bridge foundation (200), reinforce the reinforcement embedded in the bridge foundation (200), and install the steel pipe 201 is installed the pier rotating device (100);

A plurality of lower column reinforcing bars 202 are disposed around the steel pipe 201 to a height at which the pier rotating device 100 of the steel pipe 201 is installed, and the plurality of lower column reinforcing bars 202 penetrates from the top to a predetermined depth. Installing the position fixing plate 203 of the lower column reinforcement 202 inserted below;

After pouring concrete into the bridge foundation (200) formwork to cure, install the lower pillar formwork to the height of the pier rotating device 100 of the steel pipe 201, and after curing the lower pillar concrete to cure the lower pillar ( 4 steps to complete 204);

Removing the position fixing plate 203 and installing the column connecting device 205 on the upper surface of the lower pillar 204;

Reinforcing the upper column reinforcing bar 213 and the coping part reinforcement on the column connecting device 205, installs the upper pillar 206 and the coping part form, and then curing by pouring the upper column and coping part concrete, the column connecting device Six steps to demolish 205;

A seventh step of connecting the hydraulic device 207 to the oil pipe 40 of the pier rotating device 100 to inject oil and to rotate the upper column 206 while applying oil pressure;

An eight step of fixing the upper column 206 by removing the hydraulic pressure of the hydraulic device 207 after installing the reinforcing bar fitting 208 on the lower column reinforcing bar 202 of the lower column 204;

After connecting the lower column reinforcing bar 202 to the upper column reinforcing bar 213 by using the reinforcing bar 208, the connection formwork 209 is installed at the connection portion of the upper column 206 and the lower column 204. 9 steps to cure after filling the joint concrete;

10 steps of dismantling the connecting die 209 and finishing the connecting portion;

It includes, and will be described with reference to FIG.

The foundation dig using a machine so that the bridge foundation 200 can be formed in the site to be constructed T-pier pier. A T-pier is constructed at the site of the foundation trench,

After the foundation trench, formwork is placed according to the shape of the foundation foundation 200, the reinforcement required to the inside of the formwork, as shown in Figure 4a the pier rotating device 100 of the present invention the steel pipe 201 installed in the middle portion It is installed vertically so as to be embedded in the bridge foundation (200).

Steel pipe may be used to a certain thickness and length of the steel pipe according to the size and shape of the T-type pier, and after cutting the intermediate degree of the steel pipe in advance to position the pier rotating device 100 between the cut steel pipe, The cut steel pipe is welded and attached to the upper rotary device 10 and the lower rotary device 20 of the bridge rotating device 100, respectively. At this time, the welded upper and lower steel pipes to maintain the vertical,

The cut portion of the steel pipe may be adjusted according to the weight of the upper pillar 206 to be supported by the pier rotating device 100. Usually, it is preferable to install in the middle of the steel pipe or above.

The pier rotating device 100 is inserted into the steel pipe 201 and installed as described above, so that the steel pipe 201 and the T-type pier can be integrated with each other, thereby securing rigidity in the entire T-type pier.

That is, even if the T-pier is artificially separated and installed by the installation of the pier rotating device 100, sufficient rigidity can be secured to external force, and flexibility to sufficiently resist horizontal load such as earthquake load can be secured. It is possible to secure ductility (resistance to the buckling of the pillar) that can be sufficiently resisted during celebrations such as loads, and stable operation is possible even when rotating the upper pillar of the T-pier.

After installing the steel pipe 201 provided with the pier rotating device 100 vertically to the pier foundation 200, the pier rotating device 100 from the bottom surface of the pier foundation 200 as shown in FIG. A plurality of reinforcement along the periphery of the steel pipe 201 to the installed height. The lower column reinforcing bar 202 serves as a member receiving the compressive force of the column, and a plurality of holes into which the lower column reinforcing bars 202 may be inserted as shown in FIG. 4B to be formed at a predetermined interval around the steel pipe 201. The formed circular positioning plate 203 is inserted from the upper portion of the lower column reinforcing bar 202. Accordingly, the position fixing plate 203 serves to prevent the position of the lower column reinforcing bar 202 from being changed by external force (concrete placing, etc.) that may be applied during construction.

After inserting the position fixing plate 203 into the lower column reinforcing bar 202, the bridge-based concrete is poured to cure the foundation to form the bridge foundation 200, and after installing the lower column formwork, the lower column concrete pier rotating device ( The lower pillar 204 is completed by curing to the installed height.

After the lower pillar 204 is completed, the lower pillar 204 and the upper pillar 206 to support the weight of the upper pillar 206 without placing concrete on the site where the pier rotating device 100 is installed. A pillar connecting device 205 is installed at the connection portion as shown in FIG. 4C.

The pillar connecting device is composed of a spacer 210, a support plate 211 having a wedge shape of a T-shaped cross section, and a ring 212 attached to the support plate 211 as shown in FIG.

The spacer 210 is for fixing the position of the lower column reinforcing bar 202 protruding beyond the height in which the pier rotating device 100 is installed, and is inserted between the lower column reinforcing bar 202 and the steel pipe. The spacer 210 may use a wooden or plastic product.

The support plate 211 is inserted along the periphery of the steel pipe between the lower column reinforcing bars 202 in which the spacer 210 is installed as a wedge shape having a T-shaped cross section as shown in FIG. 3B. Accordingly, the steel plate 201 is fitted with each other along the periphery of the steel pipe 201 and the length L of the support plate is equal to the diameter of the pillar of the T-pier. The support plate 211 serves to separate the upper pillar 206 and the lower pillar 204 and the connection of the upper pillar 206 and the lower pillar 204 when the concrete is poured to form the upper pillar 206. The site is not filled with concrete. In addition, the support plate 211 can be used as a work reference plate when installing the upper column reinforcement and formwork, it is easy to install the upper column reinforcement 213 and formwork.

The ring 212 is used when the support plate 211 is installed along the circumference of the steel pipe 201, and then pulls a pipe or wood into the ring to pull the support plate 211 apart.

After installing the pillar connecting device 205, the upper pillar reinforcement 213 is placed along the upper circumference of the steel pipe 201, and the upper pillar 206 formwork is installed, and the coping formwork is formed to form a pillar coping portion. After reinforcing the coping part reinforcement, the upper pillar concrete and the coping part concrete are poured and cured to complete the upper part of the T-pier. When the upper part of the T-pier is completed, the pillar connecting device 205 is inserted into the ring 212 of the pillar connecting device 205 by pulling the pipe or lumber as shown in FIG.

The upper and lower columns of the T-pier are designed to match the direction of traffic flow so as not to cause traffic jams, as shown in Fig. 1b, so that the final installation position of the T-pier (rotate or be installed so as to be perpendicular to the direction of traffic flow). It can be installed to have a certain angle with the flow direction. Since the pier rotating device 100 is installed between the upper column 204 and the lower column 206, when the upper column 206 (including the coping part) is rotated to the final position using a crane or the like as shown in FIG. 206 is the upper pillar 204 is rotated without rotation. At this time, when the oil is filled in the pier rotating device 207 while applying hydraulic pressure to the oil pipe 40 of the pier rotating device 100, the upper rotary device 10 of the pier rotating device 100 gets buoyancy due to the hydraulic pressure. Even if the magnitude of the rotational force applied to the upper pillar 206 is smaller than the load including the own weight of the upper pillar 206, the upper pillar 206 can be easily rotated to a desired position. The hydraulic pressure is preferably applied to 10% or less of the load applied to the upper column 206.

After the upper pillar 206 of the T-pier is rotated to the final position, the reinforcing bar 208 is installed in the lower column reinforcing bar 202 as shown in FIG. 4F, and the hydraulic pressure applied by the hydraulic device 207 is removed. When the hydraulic pressure is removed, the upper column 206 is fixed to the lower column 204 by the weight of the upper column 206. The upper and lower column reinforcing bars 213 and 202 are integrally connected to the upper column reinforcing bars 213 protruding from the upper column 206 by connecting the reinforcing bar 208 installed in the lower column reinforcing bars 202. The reinforcing bar 208 is used as a coupler for reinforcing bars or a friction plate for reinforcing bars.

After the upper and lower column reinforcing bars 213 and 202 are connected, the connection formwork 209 is formed in the connection portion of the upper pillar 206 and the lower pillar 204, and the connection formwork 209 is formed inside the connection formwork 209. Injecting concrete into the joint to cure, dismantling the connection formwork 209 and finish as shown in Figure 4h to complete the T-type pier.

The pier rotating device of the present invention and the T-type bridge construction method using the same are completed by installing the temporary copper bar for forming the coping portion of the T-type pier to match the traffic flow direction, and then transport the upper column including the coping portion of the T-type pier. By rotating to coincide with the flow direction, it does not cause traffic jams due to the construction of downtown T-type bridges, thereby reducing the economic cost of traffic jams.T-type bridges are constructed by using steel pipes with bridge turning devices. Since the pier acts integrally with the steel pipe, it is easy to ensure the durability, flexibility and ductility of the T-type bridge pier, it is possible to construct a structurally stable T-type bridge piers.

Claims (11)

A circular plug shape as a whole, the upper plate hole 13 having a constant diameter is continuous in the center of the upper plate 11 and the lower surface of the upper plate 11 which is dug in the upper surface to have the same diameter as the upper plate hole 13 An upper rotary device 10 having a rotary plate 12 protruding at a predetermined thickness; The circular plate shape as a whole, the rotary plate hole 21 having a diameter that can be inserted into the rotary plate 12 of the upper rotary device 10 is dug in the center of the upper surface, the lower surface such as the upper plate hole 13 A lower rotating device 20 having a lower plate hole 22 formed in a diameter; A sealing member 30 inserted along a contact portion of the rotating plate 12 of the upper rotating device 10 and the rotating plate hole 21 of the lower rotating device 20; And, A plurality of oil pipes 40 vertically penetrating from the lower surface of the lower rotating device 20 to the rotating plate hole 21; Pier rotating device comprising a. The pier rotating device according to claim 1, wherein the sealing material is any one of rubber or metal rings. The pier rotating device according to claim 1, further comprising a plurality of oil pipes (40) formed by vertically penetrating the rotating plate (12) from the upper surface of the upper rotating device (10). The pier rotating device according to claim 1, wherein a plurality of anchors are further added to the upper plate hole (13) of the upper rotating device (10) and the lower plate hole (22) of the lower rotating device (20). 1 step of digging the land of the site where the bridge foundation 200 is to be formed; Step 2 to install the pier foundation formwork on the pier foundation 200, reinforce the reinforcement embedded in the pier foundation 200, and install the steel pipe 201 is installed the pier rotating device 100 of claim 1 ; A plurality of lower column reinforcing bars 202 are disposed around the steel pipe 201 to a height at which the pier rotating device 100 of the steel pipe 201 is installed, and the plurality of lower column reinforcing bars 202 penetrates from the top to a predetermined depth. Step 3 for installing the position fixing plate 203 of the lower column reinforcement is inserted below; After pouring concrete into the bridge foundation (200) formwork to cure, install the lower pillar formwork to the height of the pier rotating device 100 of the steel pipe 201, and after curing the lower pillar concrete to cure the lower pillar ( 4 steps to complete 204); Removing the position fixing plate 203 and installing the column connecting device 205 on the upper surface of the lower pillar 204; Reinforcing the upper column reinforcing bar 213 and the coping part reinforcement on the column connecting device 205, installs the upper pillar 206 and the coping part form, and then curing by pouring the upper column and coping part concrete, the column connecting device Six steps of dismantling 205; A seventh step of connecting the hydraulic device 207 to the oil pipe 40 of the pier rotating device 100 to inject oil and to rotate the upper column 206 while applying oil pressure; An eight step of fixing the upper column 206 by removing the hydraulic pressure of the hydraulic device 207 after installing the reinforcing bar fitting 208 on the lower column reinforcing bar 202 of the lower column 204; After connecting the lower column reinforcing bar 202 to the upper column reinforcing bar 213 by using the reinforcing bar 208, the connection formwork 209 is installed at the connection portion of the upper column 206 and the lower column 204. 9 steps to cure after filling the joint concrete; 10 steps of dismantling the connecting die 209 and finishing the connecting portion; T-type pier construction method using a pier connecting device comprising a. In claim 5, the steel pipe 201 is installed, the pier rotating device 100, T-type pier construction method using a pier connecting device characterized in that after cutting the steel pipe of a certain length, the pier rotating device of claim 1 was attached by welding between the cut steel pipe. 7. The pier connecting device according to claim 6, wherein the cutting position of the steel pipe 201 is determined at any one of the positions where the pier connecting device 100 is at least in the middle or higher than the final height of the pier. T-type bridge construction method. In claim 5, the pillar connecting device 205, A plurality of spacers 210 installed between the lower column reinforcing bars 202 and the steel pipe 201; A plurality of support plates 211 inserted between the lower column reinforcing bars 202 and the spacer 210; And, A plurality of rings 212 installed on the support plate 211; T-type pier construction method using a pier connecting device 100, comprising a. The method of claim 8, wherein the material of the spacer 210 is T-type bridge construction method using a bridge connecting device 100, characterized in that any one of plastic or wood. In claim 8, the support plate 210 is a 'T'-shaped cross-section is installed along the steel pipe 201 and the lower column reinforcement 202, with the lower column reinforcement 202 and the spacer 210 interposed therebetween. Pier type construction method using a pier connecting device 100, characterized in that the wedge of. The method of claim 5, wherein the reinforcing bar 208 is a T-type bridge construction method using a pier connecting device 100, characterized in that any one of the coupler for reinforcing bars or friction joint plate for reinforcing bars.