KR101036852B1 - Psc bridge pier assembled with precast concrete segments having steel duct and steel pipe and reinforcing bar, and constructing method thereof - Google Patents

Abstract

The present invention relates to a PSC bridge pier assembled with precast concrete segments having a steel duct, a steel pipe and a reinforcing bar, and a method of constructing the PSC pier, and more particularly, to a PSC pier construction method comprising a plurality of foundation sheath pipes, And a plurality of shear connection members for shear connection are formed to protrude from the upper surface of the steel sheathing pipe, and a plurality of shear connection members for shear connection are formed so as to protrude from the upper surface, A pier foundation installation step of installing a pier foundation so that an insertion hole is formed; A steel pipe supporting steel pipe inserting step for inserting a steel pipe supporting steel pipe having the same length as the steel pipe between the foundation sheath pipe inserted into the bridge pier foundation and the steel wire; A reinforcing bar inserting step of inserting a reinforcing bar into the reinforcing bar insertion hole for the pier foundation; (N = "2" or more): 1 in a vertical direction and a plurality of shear connectors on the upper surface, a plurality of connection sockets on the corresponding lower surface, Each of the connecting sockets of the segment manufactured so as to have the reinforcing bar insertion holes for the segments to be combined with each of the front shear connection members provided on the upper surface of the pier foundation so that the segments are stacked on the upper surface of the pier foundation 1 lamination process; A second laminating step of laminating the segments at a plurality of stages by mutually combining the respective connecting sockets of the segments adjacent to the respective front end connectors of the segments by 1: 1; A coping portion forming step of forming a coping portion on the upper surface of the uppermost segment; And a fixing step of fixing the steel wire after tensioning the steel wire after the steel wire supporting steel pipe is removed, and fixing the steel wire.

According to the present invention, it is possible to prevent the rise of the construction cost and to facilitate the connection between the segment and the foundation of the pier, by installing the shear connection member using the steel pipe duct having a partially short length in the pier foundation and the segment, And the steel wire supporting pipe for self-supporting the steel wire is inserted between the steel wire and the sheath pipe so that the steel wire is made to stand upright by the steel wire supporting steel pipe at the time of the segment stacking, It is possible to improve the economical efficiency by reducing the number of the steel material and the number of the fixing holes while performing the same performance as that in the case of rewinding only with the steel material by allowing the reinforcing bars to bear a part of the bending resistance burdened by the steel wire by providing the reinforcing bars between the steel wires.

Precast, segment, PSC, bridge, construction, shear connection, connection socket, rebar

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a PSC bridge pier assembled with a precast concrete segment having a steel duct, a steel pipe and a reinforcing bar, and a method of constructing the bridge pier,

The present invention relates to a PSC bridge pier assembled with precast concrete segments having steel ducts, steel pipes and reinforcing bars, and a method of constructing the bridge piers. More particularly, the present invention relates to a bridge pier And a connecting socket using a partially ducted steel duct is installed in the segment and the coping portion, and a steel pipe is inserted between the sheath pipe and the steel wire for self-reliance of the steel wire, and the steel wire is partially buried between the steel wire and the steel wire The present invention relates to a PSC bridge pier assembled with precast concrete segments having steel ducts, steel pipes and reinforcing bars, and a construction method thereof.

In general, the construction of bridges due to concrete pouring at the site increases the construction period, and due to the environmental problems and the complaints caused by them, the construction methods such as this have been reduced in recent years. Instead, Rapid construction methods are widely used.

The rapid construction method described above not only shortens the overall construction period of the bridge but also minimizes environmental problems and complaints. The rapid construction method requires mechanization of the construction environment due to the use of large equipment It is true that we are contributing.

In assembling such a segment, a shear key should be provided for the shear connection at the discontinuity that exists between the segments so that shear resistance by mechanical engagement is exhibited. In the case of precast concrete segments, these shear keys are typically made in the form of protrusions on one side of the segment when making the segment. However, when the shear key is protruded at one side of the segment, when the form is demolished, the shear key breaks easily due to minor carelessness. Especially, when the size of the shear key is small and the protrusion length is large, breakage of the shear key is liable to occur in the process of manufacturing the segment. In addition, when the concrete is not properly filled in the shear key forming part of the form, the shear key is not formed in the desired shape in the segment when the form is deformed.

On the other hand, in disposing the tension members continuously in the neighboring segments, there is a possibility that leakage occurs through the discontinuity between the segments. The discontinuity between the segments, that is, the leakage from the tie-member mounting hole occurring at the joint surface of the segment, causes corrosion of the tie member, which leads to damage of the tie member, which can cause serious problems in the whole structure such as collapse of the structure. Therefore, in assembling the segments in succession, special measures are required to prevent the corrosion of the tensions that are continuously disposed on the segments.

In order to solve such a problem, the present applicant has developed a patent registration 10-0738999 (precast concrete segment having an assembly structure using a steel duct and a connection assembly structure thereof).

1, a pre-cast concrete segment 10 (hereinafter, abbreviated as a "segment") having an assembly structure using the steel duct is provided with a steel duct 12 for shear connection in the assembling direction of the segment 10, As shown in Fig. The steel duct is composed of a steel pipe for supporting a cylindrical steel wire, and a tensile material to be introduced into the segment 10 is disposed through the steel duct 20.

As shown in the figure, the steel duct 20 has its lower end positioned to fit on the lower surface of the segment 10 and does not protrude to the outside, but the upper end of the steel duct 20 is connected to the upper end of the segment 10 And is projected out of the upper surface. The upper end of the outwardly projecting steel duct 20 is connected to the upper surface of the steel duct 20 embedded in the lower surface of the adjacent segment 10, that is, the adjacent segment 10, when the adjacent segments 10 are assembled with each other. And is inserted into the lower end portion. In order to facilitate insertion of the steel duct 20 between the neighboring segments 10, the lower end of the steel duct 20 is made up of an expanded tube portion 21 whose diameter is enlarged, In addition to the formation of the tube portion 21, the upper end of the steel duct 20 is formed with a tapered axial tube portion 23 so that its diameter gradually decreases.

However, since the axial pipe portion is formed at one end of the steel duct and the expanded portion is formed at the other end, when the length of the segment is long, the length of the steel duct is also increased and the construction cost is increased.

In addition, there is another problem that it is difficult to stack the segments when the sheath tube having the same steel wire as the pier length is installed on the foundation of the pier, and the steel wire is warped when the segments are stacked.

In addition, when the segment used in the pierce sphere is connected to the pier foundation, the connection between the segment and the pier foundation is not easy because the front end connected to the segment is not separately formed at the pier foundation, There is another problem that holds.

Also, due to the characteristics of the PSC pier designed to resist the steel wire against the bending in the pier structure, the energy dissipating ability is lowered, and there is another problem that the construction cost is increased due to the number of the steel material and the fixing tool.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide a pier bridge foundation and a segment having a shear connection member using a steel duct partially having a short length and a connecting socket using a steel duct partially having a short length in the segment and the coping portion A PSC that is assembled into a precast concrete segment with a steel duct and steel ducts to prevent the rise in construction cost and to facilitate the connection between the segment and the pier foundation and to prevent the shear failure of the joint in advance. And to provide a method for constructing a bridge pier and its construction.

The present invention also relates to a steel pipe duct for reinforcing the steel pipe for supporting the steel wire for self-standing between the steel wire and the sheath pipe so as to allow the steel wire to stand upright by the steel wire supporting steel pipe during the segment stacking, And a method of constructing the PSC bridge pier.

Further, according to the present invention, a reinforcing bar is provided between a steel wire and a steel wire so that a portion of the bending resistance burdened by the steel wire is borne by the reinforcing steel, thereby improving the economical efficiency by reducing the number of steels and anchor holes The present invention provides a PSC pier and a method of constructing the PSC pier, which are assembled with a precast concrete segment having a steel duct, a steel pipe, and a reinforcing bar.

In addition, the present invention is characterized in that the corner of the pier and the edge of the segment are chamfered and the sealing material is attached thereto to water between the segments and to add color to the sealing material to provide aesthetics. Another object is to provide a PSC bridge pier assembled with a cast concrete segment and a construction method thereof.

According to an aspect of the present invention,

A PSC pier construction method comprising: a plurality of foundational sheath pipes; a steel wire extended by a pierce length and inserted into the foundation sheath pipe; and a plurality of shear connection members for shear connection protruding from the upper surface A pier foundation foundation process for constructing a pier foundation so that a foundation reinforcing bar insertion hole is formed by a certain depth in a vertically downward direction between respective shear connection members; A steel pipe supporting steel pipe inserting step for inserting a steel pipe supporting steel pipe having the same length as the steel pipe between the foundation sheath pipe inserted into the bridge pier foundation and the steel wire; A reinforcing bar inserting step of inserting a reinforcing bar into the reinforcing bar insertion hole for the pier foundation; (N = "2" or more): 1 in a vertical direction and a plurality of shear connectors on the upper surface, a plurality of connection sockets on the corresponding lower surface, Each of the connecting sockets of the segment manufactured so as to have the reinforcing bar insertion holes for the segments to be combined with each of the front shear connection members provided on the upper surface of the pier foundation so that the segments are stacked on the upper surface of the pier foundation 1 lamination process; A second laminating step of laminating the segments at a plurality of stages by mutually combining the respective connecting sockets of the segments adjacent to the respective front end connectors of the segments by 1: 1; A coping portion forming step of forming a coping portion on the upper surface of the uppermost segment; And a fixing step of fixing the steel wire after tensioning the steel wire after the steel wire supporting steel pipe is removed, and fixing the steel wire.

Here, the pier foundation bases are formed with chipped grooves for easy attachment of the non-shrinkage mortar on the upper surface, and rubber pads for horizontally maintaining and filling the shrinkage mortar are further inserted into the grooves.

Here, the predetermined depth of the reinforcing bars for foundation holes is formed to a depth satisfying the required fixing length.

Here, the segment further includes a sheath tube for the segment, which corresponds one-to-one with the foundation sheath tube so that the steel wire and the wire for supporting the steel wire penetrate therethrough and extends from the lower end of the sheath connector to the upper end of the connection socket do.

Here, the segment has chamfer portions at the bottom edge of the uppermost segment and chamfer portions at the lowermost segment and the upper and lower edges of the segment adjacent to the uppermost segment, respectively, and the sealant is bonded to the chamfered portion.

Here, the segment is formed with a ring-shaped first sealing groove spaced a predetermined distance from the outer surface of the front end connection member, and a first sealing rubber pad is provided in the first sealing groove.

Here, the bottom surface of the connecting socket is interfaced with the upper surface of the first sealing rubber pad.

Here, the segment is formed with a ring-shaped second sealing groove spaced a predetermined distance from the outer surface of the reinforcing bar insertion hole for the segment located on the upper surface thereof, and a second sealing rubber pad is provided in the second sealing groove .

Here, the steel pipe for supporting the steel wire is fixed by the supporting steel bar at the pier foundation, and is removed when the segments are stacked.

Here, the reinforcing bars are fixed together with the steel wire supporting steel pipe by the supporting reinforcing bars.

Here, the above-mentioned coping portion is laid on the top surface of the uppermost segment, or pre-casted and laminated on the uppermost segment of the uppermost segment.

Here, the coping portion is formed by inserting a connection socket into a bottom surface of the segment at a position corresponding to the front end coupling member of the segment, and a reinforcing bar insertion hole for the coping portion is formed at a position corresponding to the reinforcing bar insertion hole for 1: .

Here, the coping portion may further include a sheathing sheath pipe corresponding to the sheathing sheathing tube so that the steel wire and the steel wire supporting steel pipe penetrate therethrough, and extending from a lower end of the shear connection member to an upper end of the connection socket do.

Here, the shear connection member is formed in a cylindrical shape with the upper and lower surfaces opened, or a tapered shape in which the upper and lower surfaces are opened, the upper end is narrower, and the lower end is widened.

Here, the connection socket is formed in a cylindrical shape with an upper surface closed and a lower surface opened, and a through hole through which the foundation sheath pipe or the sheath pipe for segment penetrates is provided at the center of the upper surface.

Here, the shear connection member and the connection socket maintain a gap when they are coupled with each other, and the non-shrinkage mortar is filled in the gap and the shear connection member and the connection socket.

Here, in the second laminating step, an adhesive is applied to the upper surface of the segment, and the neighboring segments are laminated.

Here, the above-mentioned reinforcing bar is formed to extend by the pierce length.

Here, the reinforcing bars are partially extended by a pier length, the remainder is extended by a predetermined height of the pier, and more reinforcing bars are installed on the lower side of the pier.

Here again, the reinforcing bars are formed by two or more reinforcing bars formed by couplers or sleeves.

Also, the reinforcing bar insertion hole for the foundation, the reinforcing bar insertion hole for the segment, and the reinforcing bar insertion hole for the coping part are designed to have an inner diameter larger than the diameter of the reinforcing bar, and the reinforcing bars are fixed by filling the non-contracting mortar therein.

According to another aspect of the present invention,

And a PSC pier assembled with a precast concrete segment having a steel duct, a steel pipe, and a reinforced concrete structure constructed by a construction method of a PSC bridge pier assembled with precast concrete segments having steel ducts, steel pipes and reinforcing bars.

According to the PSC bridge pier assembled with the precast concrete segment having the steel duct, the steel pipe and the reinforcing steel, and the method of constructing the same, the present invention having the above-described structure, the shear connection member using the steel pipe duct having the short- Thus, the rise of the construction cost can be prevented in advance, the connection between the segment and the pier foundation can be facilitated, and the shear failure of the joint portion can be prevented in advance.

Further, according to the present invention, by inserting a steel pipe for self-sustaining a steel wire between the steel wire and the sheath pipe, the steel wire is made to stand upright by the steel wire supporting steel pipe at the time of stacking the segments to improve the workability, .

According to the present invention, a reinforcing bar is provided between a steel wire and a steel wire so that a portion of the bending resistance burdened by the steel wire is borne by the steel wire, thereby reducing the number of steel materials and the number of fixtures, Can be improved.

Further, according to the present invention, chamfering of the pier foundation base and the edges of the segments, and adhesion of the sealing materials to the edges of the pier bases and seg- ments, waterproofing between the segments and adding color to the sealing material can provide aesthetics.

Hereinafter, the construction of a PSC bridge pier assembled with precast concrete segments having steel ducts, steel pipes and reinforcing bars according to the present invention will be described in detail with reference to the accompanying drawings.

In the following description of the present invention, detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. The following terms are defined in consideration of the functions of the present invention, and these may be changed according to the intention of the user, the operator, or the like. Therefore, the definition should be based on the contents throughout this specification.

FIG. 2 is a perspective view showing the construction of a bridge pier among the PSC bridge piers assembled with precast concrete segments having steel ducts, steel pipes and reinforcing bars according to the present invention, FIG. 3 is a sectional view taken along line AA in FIG. 2, 5 is a perspective view showing the construction of a segment of a PSC bridge pier assembled with a precast concrete segment having a steel duct, a steel pipe and a steel bar according to the present invention according to the present invention, FIG. 6 is a cross- FIG. 7 is a cross-sectional view taken along the line BB of FIG. 6, and FIG. 8 is a cross-sectional view of the steel duct, the steel pipe, and the reinforcing bar according to the present invention. 9A and 9B are side cross-sectional views illustrating the construction of a coping portion of a PSC bridge pier assembled with a precast concrete segment having a steel FIG. 10 is a perspective view showing the construction of a shear connection member among the PSC pier assembled with precast concrete segments having a re-duct, a steel pipe and a reinforcing bar. FIG. 10 is a perspective view of assembling the precast concrete segment having the steel duct according to the present invention, 11a and 11b are sectional views showing the construction of a reinforcing bar of a PSC bridge pier assembled with precast concrete segments having steel ducts, steel pipes and reinforcing bars according to the present invention, FIG. 12 is a cross-sectional view of a PSC bridge pier assembled with precast concrete segments having steel ducts, steel pipes and reinforcing bars according to the present invention, FIG. 13 is a sectional view of steel pipe ducts, steel pipes and reinforcing bars according to another embodiment of the present invention Sectional view of a PSC pier assembled with precast concrete segments.

As shown in FIGS. 2 to 13, the pier foundation 110 is installed at the site, and a plurality of shear connectors 203 for shear connection are inserted into the upper ends of the pier foundation 110, so that the shear connector 203 protrudes from the upper surface.

The pier foundation 110 includes a plurality of foundation sheath pipes 111 and a steel wire 201 extended by a pierce length and inserted into the foundation sheath pipe 111. The inner and outer The groove 113 is chipped to facilitate attachment of the non-shrinkage mortar to the surface of the groove 113, and the leakage of the horizontal holding and non-shrinkage mortar filling into the groove 113 A rubber pad 115 is inserted and inserted. At this time, a fixing hole 202 for fixing the steel wire 201 is connected to one end of the foundation sheath pipe 111.

Further, it is preferable that the chamfered portion 117 is formed on the top edge of the pier foundation 110 to prevent breakage by the compaction equipment or the like.

Also, the pier foundation 110 is formed with reinforcing bars 119 for foundation for a certain depth in the vertical downward direction between the respective shear connectors 203. Here, the certain depth of the foundation reinforcing bar insertion hole 119 is formed to a depth satisfying the required fixing length of the reinforcing bar 210. [ Here, the foundation reinforcing bar insertion hole 119 is formed by embedding a synthetic resin pipe, a steel pipe, or the like at the time of constructing the pier foundation 110, which is constructed by a construction method capable of forming a normal hole.

On the other hand, when the curing base 110 is cured, a steel wire supporting pipe 207 having the same length as the steel wire 201 is inserted between the foundation sheath pipe 111 and the steel wire 201, (207) is fixed by supporting reinforcing bars (101).

5 to 7, the segment 120 is formed in a rectangular or cylindrical shape as a solid or hollow and has a plurality of shear connectors 203 on the upper surface thereof and a plurality of connection portions And a socket (205).

The segment 120 corresponds to the base sheath pipe 111 in a one-to-one correspondence with the steel sheath pipe 111 so that the steel wire 201 and the steel wire supporting steel pipe 207 pass therethrough. At the lower end of the shear connecting member 203, And a sheath tube 121 for a segment extending to an upper end of the sheath tube 121.

In addition, the segment 120 has chamfered portions 122 at its corners, a sealant 123 is coupled to the chamfered portion 122, and the first and second ring-shaped first and second ring- The first sealing rubber pad 125 is provided on the first sealing groove 124 and the first sealing rubber pad 125 is formed on the bottom surface of the connecting socket 205 This is interviewed. At this time, a mortar may be put in place of the sealing material 123.

The segments 120 correspond to 1: 1 or N: 1 (for example, 2: 1, 3: 1 or the like) with the reinforcing bar insertion holes 119, And has an insertion hole (126). Here, the reinforcing bar insertion hole 126 for the segment is formed by embedding a synthetic resin pipe, a steel pipe, or the like at the time of constructing the pier foundation 110, which is constructed by a construction method capable of forming a normal hole.

The segment 120 is formed with a ring-shaped second sealing groove 127 spaced a predetermined distance from the end of the reinforcing bar insertion hole 126 located on the upper surface of the segment 120, and the second sealing groove 127 is formed in the second sealing groove 127. A sealing rubber pad 128 is provided to block the discharge of the non-shrinkage mortar to the outside.

As shown in FIGS. 8 and 12, the coping portion 130 is placed on the upper surface of the uppermost segment, or is pre-cast and stacked on the uppermost segment.

The coping portion 130 is formed by inserting a connection socket 205 into a bottom surface which is in a position corresponding to the front end connection member 203 of the segment 120 in a one to one correspondence relationship and the steel wire 201 and the steel wire supporting steel pipe 207 And a sheathing tube 131 for coping extending from the lower end of the shear connection member 203 and the upper end of the connection socket 205 so as to pass through the segment sheath tube 121, A reinforcing bar insertion hole 133 for a coping portion is formed at a position corresponding to the reinforcing bar insertion hole 126 in a 1: 1 position. Here, the reinforcing insert hole 133 for the coping part is formed by embedding a synthetic resin pipe, a steel pipe, or the like at the time of constructing the pier foundation 110, which is constructed by a construction method capable of forming a normal hole.

Meanwhile, the pier foundation 110 of the present invention and the shear connection member 203 formed on the segment 120 are formed into a cylindrical shape with the upper and lower surfaces opened by a steel material as shown in FIG. 9A. Here, the shear connection member 203 may be formed in a tapered shape in which the upper and lower surfaces thereof are opened as shown in FIG. 9B, the upper end thereof is narrower and the lower end thereof is widened.

10, the connection socket 205 formed in the segment 120 and the coping portion 130 is formed in a cylindrical shape having an open top and a bottom opened, and a base sheath tube 111 Or a through hole 206 through which the sheath tube 121 for a segment passes.

On the other hand, the shear connection member 203 and the connection socket 205 maintain the gap G when they are coupled with each other, and a gap G is formed between the shear connection member 203 and the connection socket 205, Lt; / RTI >

In addition, no shrinkage mortar is filled in the base sheath tube 111, the segment sheath tube 121, and the sheathing sheath tube 131 to maintain the tension of the steel wire 201 located therein.

12, the reinforcing bars 210 may be extended by a pierce length as shown in FIG. 12, or may be extended by a pierce length as shown in FIG. 13, and the remainder may be extended by a predetermined height of the bridge, More reinforcing bars 210 are installed on the lower side of the pier. At this time, the number of reinforcing bars 210 is equal to or greater than the number of steel rods 201.

11A, two or more reinforcing bars 210 may be extended by a coupler 211, or two or more reinforcing bars 210 may be formed on a sleeve 213 as shown in FIG. 11B, As shown in Fig. Here, the coupler 211 and the sleeve 213 are well-known structures that are commonly used, and therefore their detailed description is omitted.

The reinforcing bar insertion hole 119 for the foundation, the reinforcing bar insertion hole 126 for the segment and the reinforcing bar insertion hole 133 for the coping portion are designed to have an inner diameter larger than the diameter of the reinforcing bar 210, It is preferable that the reinforcing bars 210 are filled.

Hereinafter, a construction method of a PSC bridge pier assembled with precast concrete segments having steel ducts, steel pipes and reinforcing bars according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 14 is a simplified process diagram of a method of constructing a PSC bridge pier assembled with precast concrete segments having steel ducts, steel pipes and reinforcing bars according to the present invention, FIGS. 15A to 15H are views showing a steel duct, And a pre-cast concrete segment including the PSC pier.

First, as shown in Figs. 14 and 15A, a plurality of foundation sheath pipes 111, a steel wire 201 extended by a pierce length and inserted into the foundation sheath pipe 111, A plurality of shear connectors 203 for shear connection protruding from the upper surface of the shear connection members 203 and a piercing hole 119 formed at a predetermined depth in the vertical downward direction between the shear connectors 203, The base 110 is constructed on the ground surface (S110). At this time, the pier foundation 110 performs the compaction process on the ground surface by the compaction equipment.

As shown in FIG. 15B, a steel pipe supporting steel pipe 207 having the same length as the steel pipe 201 is inserted between the foundation sheath pipe 111 and the steel pipe 201 inserted in the pier foundation 110 (S120). At this time, it is preferable to fix the steel wire supporting steel pipe 207 by the supporting steel bar 101.

Then, as shown in FIG. 15C, the reinforcing bar 210 is inserted into the reinforcing bar insertion hole 119 for the foundation of the pier foundation 110 (S130). 13, in order to place more reinforcing rods 210 on the lower side of the pier, reinforcing rods having different lengths, that is, reinforcing rods whose length is extended by a piercing length and the remainder are extended by a predetermined height of the pier And inserted into the reinforcing bar insertion hole 119 for foundation.

15D, the previously manufactured segment 120 is laminated on the upper surface of the pier foundation 110, and the rubber pads 115 The connection socket 205 of the segment 120 is connected to the front end connection member 203 of the pier foundation 110 by 1: 1 (S140). The steel wire 201 and the steel wire supporting steel pipe 207 penetrate the segment 120 through the segment sheath tube 121 of the segment 120 and the steel wire 210 penetrates the segment 120 of the segment 120, And penetrates the segment 120 through the insertion hole 126. Further, the grooves 113 for the segments are filled with no shrinkage mortar through spaces between the rubber pads 115.

15E, in order to sequentially stack the segments 120 manufactured from the above state to the design height on the upper surface of the segment 120 stacked on the upper surface of the pier foundation 110, And the shear connector 203 are coupled one to another (S150). At this time, the support reinforcing bars 101 are removed from the steel pipe supporting steel pipe 207 and the reinforcing bars 210 to stack the segments 120. Also, epoxy is applied to the bottom surface of the segment 120 adjacent to the top surface of the segment 120 to bond them together. 13, in order to arrange more reinforcing rods 210 on the lower side of the pier, the reinforcing bars 210 extended by a predetermined height of the pier are first fixed, and the segments 120 are moved up to the height of the reinforcing bars 210 The non-shrinkage mortar is poured through the reinforcing bar insertion holes 126 for the uppermost segment after stacking in the uppermost segment to form the reinforcing bar insertion holes 126 for the segments and the reinforcing bar insertion holes 119 is filled with a non-shrinkage mortar and then cured to fix the reinforcing bar 120. Thereafter, the segments 120 are laminated by the above process.

15F, in order to stack the coping portion 130 on the top surface of the uppermost segment or to laminate the precast produced on the top surface of the uppermost segment, the shear connecting member 203 and the connecting socket 205 to each other (S160). At this time, the steel wire 201 and the steel wire supporting steel pipe 207 are discharged through the coping sheath pipe 131 and the reinforcing bar 210 is discharged through the reinforcing steel insertion hole 133 for the copping part.

Then, as shown in FIG. 15G, the steel wire support pipe 207 is pulled out, and then the steel wire 201 is tightened and fixed, and non-shrinkage mortar is poured through the reinforcing steel insert hole 133 for the coping part, Shrinkage mortar is filled in the hole 133, the reinforcing bar insertion hole 126 for the segment, and the reinforcing bar insertion hole 119 for fixing the reinforcing bar 210 (S170). At this time, the fixing of the steel wire 201 is performed by fixing the fixing hole 202 at the upper end thereof by a conventional method and filling the mortar into the base sheath pipe 111 through the fixing hole 202 of the pier foundation 110 Thereby filling the mortar in the longitudinal direction of the segment sheath tube 121 and the sheathing sheath tube 131. Further, the reinforcing bar insertion hole 133 for the coping portion and the non-contracting mortar filled in the reinforcing bar insertion hole 126 for segment are unsealed by the second sealing rubber pad 128.

Then, the shrinking mortar is filled in the shear connector 203 and the connecting socket 205. At this time, the non-shrinkage mortar is undesirably discharged to the outside by the first sealing rubber pad 129 which is in contact with the bottom surface of the connecting socket 205.

15H, when the pier construction is completed, the seal 120 is adhered to the chamfer 122 between the segment 120 and the neighboring segments 120 with a color different from that of the concrete, . At this time, the mortar may be placed in place of the sealing material 123, and the sealing material 123 may be attached in the process of laminating the segments 120.

The reinforcing bars 120 are formed by stacking the pier foundation 110, the segments 120 and the copings 130 and then connecting the reinforcing bars 120 through the reinforcing bars 130 for the segments through the reinforcing bars 133 for the copings of the copings 130 126 and the reinforcing bar insertion hole 119 for the foundation, and then filled with the non-shrinkage mortar.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It is to be understood, however, that the invention is not to be limited to the specific forms thereof, which are to be considered as being limited to the specific embodiments, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims. .

1 is a perspective view showing a structure of a segment having an assembled structure using a conventional steel duct,

2 is a perspective view showing the construction of a bridge pier among PSC bridge piers assembled with precast concrete segments having steel ducts, steel pipes and reinforcing bars according to the present invention,

3 is a cross-sectional view taken along line A-A in Fig. 2, Fig. 4 is a plan view of Fig. 2,

5 is a perspective view of a segment of a PSC bridge pier assembled with precast concrete segments having steel ducts, steel pipes and reinforcing bars according to the present invention,

FIG. 6 is a bottom perspective view showing the construction of a segment of a PSC bridge pier assembled with precast concrete segments having steel ducts, steel pipes and reinforcing bars according to the present invention,

7 is a sectional view taken along line B-B of Fig. 6,

8 is a side cross-sectional view showing the construction of a coping portion of a PSC bridge pier assembled with precast concrete segments having steel ducts, steel pipes and reinforcing bars according to the present invention,

9A and 9B are perspective views showing the construction of a shear connection member among PSC piers assembled with precast concrete segments having steel ducts, steel pipes and reinforcing bars according to the present invention,

10 is a perspective view showing the construction of a connection socket of a PSC bridge pier assembled with a precast concrete segment having a steel duct, a steel pipe and a reinforcing bar according to the present invention,

11A and 11B are cross-sectional views illustrating the construction of a reinforcing bar of a PSC pier assembled in a precast concrete segment having steel ducts, steel pipes and reinforcing bars according to the present invention,

12 is a cross-sectional view of a PSC bridge pier assembled with precast concrete segments having steel ducts, steel pipes and reinforcing bars according to the present invention,

13 is a cross-sectional view of a PSC bridge pier assembled with precast concrete segments having steel ducts, steel pipes and reinforcing bars according to another embodiment of the present invention,

FIG. 14 is a simplified view of a construction method of a PSC bridge pier assembled with precast concrete segments having steel ducts, steel pipes and reinforcing bars according to the present invention,

15A to 15H are diagrams for explaining a method of constructing a PSC bridge pier assembled with precast concrete segments having steel ducts, steel pipes and reinforcing bars according to the present invention.

DESCRIPTION OF THE REFERENCE NUMERALS

110: Pier foundation 120: Segment

130: Coping portion 201: Steel wire

203: shear connector 205: connection socket

207 steel pipe for supporting steel wire 210 steel

Claims (23)

In the PSC pier construction method, And a plurality of shear connection members for shear connection are formed so as to protrude from the upper surface of the base sheath pipe and extend through the foundation sheath pipe, A pier foundation installation step for constructing a pier foundation so that a foundation reinforcing bar insertion hole is formed by a certain depth in a vertical downward direction between the piers; A steel pipe supporting steel pipe inserting step for inserting a steel pipe supporting steel pipe having the same length as the steel pipe between the foundation sheath pipe inserted into the bridge pier foundation and the steel wire; A reinforcing bar inserting step of inserting a reinforcing bar into the reinforcing bar insertion hole for the pier foundation; (N = "2" or more): 1 in a vertical direction and a plurality of shear connectors on the upper surface, a plurality of connection sockets on the corresponding lower surface, Each of the connecting sockets of the segment manufactured so as to have the reinforcing bar insertion holes for the segments to be combined with each of the front shear connection members provided on the upper surface of the pier foundation so that the segments are stacked on the upper surface of the pier foundation 1 lamination process; A second laminating step of laminating the segments at a plurality of stages by mutually combining the respective connecting sockets of the segments adjacent to the respective front end connectors of the segments by 1: 1; A coping portion forming step of forming a coping portion on the upper surface of the uppermost segment; And And a fixing step of fixing the steel wire after fixing the steel wire after removing the steel wire supporting steel pipe, and fixing the reinforcing steel wire. The construction of a PSC pier assembled with a precast concrete segment having a steel duct, a steel pipe and a steel bar Way. The method according to claim 1, The pier foundation includes: Characterized in that a groove for a chipped segment is formed on the upper surface to facilitate the attachment of the non-shrinkage mortar, and a rubber pad for horizontally holding and filling the shrinkage mortar is further inserted in the groove. A method of constructing a PSC pier assembled with precast concrete segments with reinforcing bars. The method according to claim 1, The predetermined depth of the reinforcing bar insertion hole for foundation, Wherein the pre-cast concrete segment is formed at a depth that satisfies a required fusing length. 2. The method of claim 1, wherein the pre-cast concrete segment comprises a steel duct and a steel pipe. The method according to claim 1, The segment includes: Further comprising a sheath tube for a segment which corresponds one to one with the foundation sheath tube so that the steel wire and the steel wire supporting steel pipe penetrate therethrough and extends from the lower end of the shear connection member to the upper end of the connection socket. And a method of constructing a PSC pier assembled with precast concrete segments having steel and reinforcing bars. The method according to claim 1, The segment includes: Wherein a chamfered portion is formed at the bottom edge of the uppermost segment and a chamfered portion is formed at each of the upper and lower edges of the segment which is adjacent to the lowermost segment and the uppermost segment and the sealing material is joined to the chamfered portion, Construction method of PSC piers assembled with precast concrete segments. The method according to claim 1, The segment includes: Wherein a first sealing groove is formed in a ring shape at a predetermined distance from an outer surface of the front end connection member and a first sealing rubber pad is provided in the first sealing groove, Construction method of PSC piers assembled with precast concrete segments. The method according to claim 6, Wherein the first sealing rubber pad comprises: And the bottom surface of the connecting socket is interfaced with the upper surface of the connecting socket. The method of constructing a PSC pier with a steel duct, a steel pipe, and a reinforced concrete precast concrete segment. The method according to claim 1, The segment includes: A second sealing groove formed in a ring shape spaced apart from the outer surface of the reinforcing bar insertion hole for the segment located on the upper surface thereof and a second sealing rubber pad provided in the second sealing groove; A method of constructing a PSC pier assembled with precast concrete segments having steel and reinforced bars. The method according to claim 1, Wherein the steel wire supporting steel pipe comprises: Wherein the reinforcing bars are fixed by supporting reinforcing bars at the pier foundation and are removed at the time of laminating the segments. A method of constructing a PSC pier with a steel duct, a steel pipe and a reinforced concrete precast concrete segment. 10. The method of claim 9, The reinforcing bars, And the reinforcing bars are fixed together with the steel pipe for supporting the steel wire by the supporting steel bars, and a method for constructing the PSC bridge pier assembled with precast concrete segments having steel pipes and reinforcing bars. The method according to claim 1, Wherein: Wherein the PSC pier is assembled in a precast concrete segment having a steel duct, a steel pipe, and a reinforcing bar, wherein the PSC pier is assembled on the upper surface of the uppermost segment, or is precasted and stacked on the uppermost segment. The method according to claim 1, Wherein: And a reinforcing bar insertion hole is formed at a position corresponding to the reinforcing bar insertion hole for the segment by 1: 1, wherein the reinforcing bar insertion hole is formed by inserting a connection socket into a bottom surface at a position corresponding to 1: 1 with the front end connection member of the segment. A method of constructing a PSC pier assembled with precast concrete segments having ducts, steel pipes and reinforcing bars. 12. The method of claim 11, Wherein: Further comprising a sheathing tube for coping which corresponds one to one with the sheathing sheath tube so that the steel wire and steel wire supporting steel pipe penetrates therethrough and extends from the lower end of the shear connecting member to the upper end of the connecting socket. And a method of constructing a PSC pier assembled with precast concrete segments having steel and reinforcing bars. The method according to claim 1, Wherein the shear connector comprises: And a tapered shape in which the upper and lower surfaces are opened and the upper end is narrower and the lower end is widened. The method of claim 1, wherein the PSC pier is assembled with a precast concrete segment having a steel duct, a steel pipe and a reinforcing bar. 5. The method of claim 4, The connecting socket includes: And a through hole through which the foundation sheath pipe or the segment sheath pipe passes is formed in a central portion of the upper surface of the steel pipe duct, Construction method of PSC piers assembled with concrete segments. The method according to claim 1, The shear connection member and the connection socket, A PSC pier assembled with a precast concrete segment comprising a steel duct, a steel pipe and a reinforcing bar, characterized in that a gap is maintained during the mutual coupling, and the shrinkage mortar is filled in the gap and the shear connection member and the connection socket. Way. The method according to claim 1, In the second laminating step, And applying the adhesive to the upper surface of the segment, and then laminating the adjacent segments. The method of claim 1, wherein the segments are laminated. The method according to claim 1, The reinforcing bars, Wherein the length of the pier is greater than the length of the pier. The method of claim 1, wherein the pre-cast concrete segment comprises a steel duct and a steel pipe. The method according to claim 1, The reinforcing bars, A part of which is extended by a pierce length and the remainder is extended by a predetermined height of the pier and further reinforcing bars are installed on the lower part of the bridge pier, and PSCs assembled with precast concrete segments having steel pipes and reinforcing bars Construction method of piers. 20. The method according to claim 18 or 19, The reinforcing bars, A method of constructing a PSC pier with two or more reinforcing bars extended by a coupler, wherein the reinforcing bars are assembled with precast concrete segments having steel ducts and steel pipes and reinforcing bars. 20. The method according to claim 18 or 19, The reinforcing bars, A method of constructing a PSC pier assembled with precast concrete segments comprising a steel duct, a steel pipe and a reinforcing bar, characterized in that at least two reinforcing bars are formed by sleeves. 13. The method according to claim 1 or 12, The reinforcing bar insertion hole for the foundation, the reinforcing bar insertion hole for the segment, Wherein the reinforcing bars are designed to have an inner diameter larger than the diameter of the reinforcing bars and filled with non-shrinkage mortars to fix the reinforcing bars. The construction method of the PSC piers assembled with precast concrete segments having steel ducts and steel bars and reinforcing bars . A PSC pier assembled with a precast concrete segment comprising a steel duct, a steel pipe and a rebar constructed by a construction method of a PSC pier assembled with precast concrete segments having steel ducts, steel ducts and reinforcing bars of claim 1.

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