KR102517707B1 - Construction method of pier and its structure system - Google Patents

Abstract

The present invention relates to a pier system and a construction method thereof, comprising: a steel pipe pile with a lower end buried in the ground; An insertion steel pipe in which an engaging member spanning the upper end of the steel pipe pile protrudes from an outer circumferential surface, and a lower portion of the engaging member is accommodated in an upper end of the receiving space of the steel pipe pile; a reinforcing bar that is placed between the steel pipe pile and the inserted steel pipe; A base steel pipe formed of a steel pipe having an inner space surrounding a portion of the inserted steel pipe, a support member integrally coupled with the base steel pipe and extending inside the radius of the base steel pipe to span the upper end of the steel pipe pile, and reinforced concrete A precast coping assembly comprising a coping member, which is synthesized into the base steel pipe as a structure and formed in the center of a penetrating portion through which the reinforcing bar passes; A composite concrete for integrating the steel pipe pile, the insertion steel pipe, and the coping assembly by casting concrete on the inside of the inserted steel pipe and the base steel pipe; A girder whose end rests on the upper surface of the coping assembly; A precast floor plate installed on the girder; Topping concrete for integrating the precast floor plate and the girder; It is configured to provide a pier system and its construction method that shorten the construction period and ensure higher load-bearing capacity.

Description

Pier system and its construction method {CONSTRUCTION METHOD OF PIER AND ITS STRUCTURE SYSTEM}

The present invention relates to a pier system and a construction method thereof, and more specifically, to a pier system and a construction method thereof, which realize a higher load carrying capacity while the construction of a pier installed on the water surface is simple and in a short time. it's about

In general, a bridge consists of a bridge superstructure composed of a bridge substructure such as piers or abutments, girders mounted on the bridge substructure, and deck plates installed to be supported on the girders.

There are differences in the form of bridges depending on the installation location or purpose. For example, a bridge substructure is formed of a concrete structure, but when it is installed on a mountainous area or on the water surface, steel pipe piles, which are easy to transport and install, are sometimes used for construction convenience.

The bridge 9 illustrated in FIG. 1 is a pier constructed in the sea, etc., and has steel pipe piles 10 fixed to the ground below the water surface to form a bridge substructure, and a bridge anchoring device 20a installed on the upper surface of the steel pipe piles 10. The girder 20 mounted on the girder 20, the precast bottom plate 30 mounted on the upper surface of the girder 20, and the front end of the girder 20 by pouring into the shear pocket 32 of the precast bottom plate 30 It is composed of synthetic concrete 40 that integrates the girder 20 and the precast floor plate 30 through the connecting material 32, and the pavement surface 50 formed on the upper surface of the precast floor plate 30.

Here, the precast floor plate 30 can be precast for the entire thickness of the floor plate required as described above according to the construction method, and only a part of the required floor plate thickness is precast as a precast floor plate, and then the girder and It is mounted between the girders and then integrated with the cast-in-place concrete on the girder 20 and the precast floor plate of partial thickness to be synthesized.

Since the construction process of the pier performed on the water surface is dangerous to workers and the access of heavy equipment is limited and difficult, it is preferable to perform it in a prefabricated form.

To this end, in the bridge 9 shown in FIG. 1, steel pipe piles 10 are driven into the ground below the water surface as a lower structure of the bridge and fixed, and the bridge floor using a precast floor plate 20 manufactured in advance in a factory. build a plate

However, when constructing a bridge substructure using steel pipe piles 10, it is very difficult to install a bridge device at the top of each pile isolated from each other, compared to forming a pier with a concrete structure, and having a small area There is a very difficult problem in mounting girders on piles.

Accordingly, it is necessary to install a coping on the top of the steel pipe pile 10 to expand the mounting cross section, and the need for a plan to quickly install the coping on the top of the steel pipe pile 10 while ensuring the safety of workers on the water surface is required .

At the same time, since the reinforcing process of the upper end of the steel pipe pile is required, there is a need for a method to more easily reinforce this process on the water surface.

In order to solve the above conventional problems, an object of the present invention is to provide a pier system and a construction method that realize higher load capacity while the construction of a pier installed on the water surface is simple and in a short time.

That is, an object of the present invention is to install a coping assembly for stably mounting a girder on top of steel pipe piles disposed separately from each other on the water surface in a simple and convenient way to ensure the safety of workers.

In addition, an object of the present invention is to have a coping assembly installed and fixed on top of a steel pipe pile to have a high load capacity.

At the same time, the present invention aims to reinforce the upper end of the steel pipe pile by synthesizing concrete at the top of the steel pipe pile.

Above all, the present invention aims to ensure the safety of workers and more quickly construct a pier with high resistance capability.

In addition, an object of the present invention is to improve workability by minimizing the installation of formwork so that concrete can be poured.

The present invention has been derived to achieve the above object, and a steel pipe pile with a lower end buried in the ground; An insertion steel pipe in which an engaging member spanning the upper end of the steel pipe pile protrudes from an outer circumferential surface, and a lower portion of the engaging member is accommodated in an upper end of the receiving space of the steel pipe pile; a reinforcing bar that is placed between the steel pipe pile and the inserted steel pipe; A base steel pipe formed of a steel pipe having an inner space surrounding a portion of the inserted steel pipe, a support member integrally coupled with the base steel pipe and extending inside the radius of the base steel pipe to span the upper end of the steel pipe pile, and reinforced concrete A precast coping assembly comprising a coping member, which is synthesized into the base steel pipe as a structure and formed in the center of a penetrating portion through which the reinforcing bar passes; A composite concrete for integrating the steel pipe pile, the insertion steel pipe, and the coping assembly by casting concrete on the inside of the inserted steel pipe and the base steel pipe; A girder whose end rests on the upper surface of the coping assembly; A precast floor plate installed on the girder; Topping concrete that integrates the precast floor plate, the girder, the coping assembly, and the composite concrete; It provides a pier system characterized in that it comprises.

The present invention, as a pier system of another embodiment, a steel pipe pile with a lower end buried in the ground; An insertion steel pipe in which an engaging member spanning the upper end of the steel pipe pile protrudes from an outer circumferential surface, and a lower portion of the engaging member is accommodated in an upper end of the receiving space of the steel pipe pile; a reinforcing bar disposed between an inner circumferential surface of the steel pipe pile and an outer circumferential surface of the inserted steel pipe; A support member extending in a radially inward direction toward the insertion steel pipe and formed in the form of an annular plate covering a part of the insertion steel pipe and spanning the upper end of the steel pipe pile, and concrete as a main material in a form surrounding the edge of the support member The synthesized coping member through which the reinforcing bars pass through is formed in the center, a cross-section reinforcing member formed in a closed cross-section shape and integrally coupled to the support member, and protruding from the support member to assist in coupling with the coping member. a precast coping assembly including a support shear connector embedded in the coping member; a composite concrete that integrates the steel pipe pile and the coping assembly by casting concrete on the inside of the inserted steel pipe and the coping assembly; A girder whose end rests on the upper surface of the coping assembly; A precast floor plate mounted on the girder and installed to be at least a part of the floor plate; Topping concrete for integrating the precast floor plate, the girder, and the composite concrete; It provides a pier system characterized in that it comprises.

On the other hand, according to another field of the invention, the present invention is a construction method of a pier system, comprising: a pile installation step of driving a steel pipe pile having an internal space so that the lower end of the steel pipe pile is buried in the ground; An insertion steel pipe installation step of preparing an insertion steel pipe having an engaging member protruding from an outer circumferential surface and installing the insertion steel pipe to the steel pipe pile so that the engaging member spans the upper end of the steel pipe pile; A reinforcing bar installation step of installing a pre-manufactured reinforcing bar to be seated in the inner space, and installing the upper end of the reinforcing bar to be exposed to the upper part of the steel pipe pile; A base steel pipe formed of a steel pipe having an inner space surrounding a portion of the inserted steel pipe, a support member integrally coupled with the base steel pipe and extending to the inside of the radius of the base steel pipe, and a reinforced concrete structure. Prepare a precast coping assembly, which includes a coping member formed in the center of the penetration part through which the reinforcing bars pass through, and prepared in advance at the factory, so that the coping assembly is positioned so that the support member spans the upper end of the steel pipe pile. A coping assembly installation step to be installed to be mounted on; A girder mounting step of mounting a girder so that an end of the girder is placed on the upper surface of the coping assembly; A girder connection step of interconnecting connecting members extending from the end of the girder; A precast floor plate installation step of installing a precast floor plate so as to rest on the girder; By casting and curing concrete between the inside of the inserted steel pipe and the base steel pipe and the precast bottom plate, the steel pipe pile, the inserted steel pipe and the coping assembly are integrated, and the precast bottom plate and the girder are integrated. The integration step of integrating; It provides a construction method of a pier system, characterized in that it comprises.

The present invention is a construction method of a pier system of another embodiment, comprising: a pile installation step of driving a steel pipe pile having an internal space so that the lower end of the steel pipe pile is buried in the ground; An insertion steel pipe installation step of preparing an insertion steel pipe having an engaging member protruding from an outer circumferential surface and installing the insertion steel pipe to the steel pipe pile so that the engaging member spans the upper end of the steel pipe pile; A reinforcing bar installation step of installing a pre-manufactured reinforcing bar to be seated in the inner space, and installing the upper end of the reinforcing bar to be exposed to the upper part of the steel pipe pile; A support member extending in a radially inward direction toward the insertion steel pipe and formed in the form of an annular plate covering a part of the insertion steel pipe and spanning the upper end of the steel pipe pile, and concrete as a main material in a form surrounding the edge of the support member It is composed of a coping member that is synthesized and has a through portion through which the reinforcing bars pass through, formed in the center, and a support shear connector protruding from the support member and embedded in the coping member to assist in coupling with the coping member, and pre-manufactured in a factory. A coping assembly installation step of preparing a precast coping assembly and installing the coping assembly to be mounted on the steel pipe pile so that the support member spans the upper end of the steel pipe pile; A girder mounting step of mounting a girder so that an end of the girder is placed on the upper surface of the coping assembly; A girder connection step of interconnecting connecting members extending from the end of the girder; A precast floor plate installation step of installing a precast floor plate so as to rest on the girder; By casting and curing concrete between the inside of the inserted steel pipe and the base steel pipe and the precast bottom plate, the steel pipe pile, the inserted steel pipe and the coping assembly are integrated, and the precast bottom plate and the girder are integrated. The integration step of integrating; It provides a construction method of a pier system, characterized in that it comprises.

According to the present invention, advantageous effects of shortening the construction period of the pier and ensuring higher load-bearing capacity can be obtained.

That is, the present invention can obtain an advantageous effect of improving workability and shortening the construction period at the site by manufacturing the coping assembly of the pier in advance at the factory, transporting it to the site, and installing it on top of the steel pipe pile.

In addition, according to the present invention, the coping assembly can be accurately installed at a predetermined position of the steel pipe pile by means of a support member made of steel, and the effect of enduring the load transmitted from the floor plate and the girder by the support member can be obtained.

Further, in the present invention, a support member made of steel and a coping member, which is a reinforced concrete structure, are combined to obtain an advantageous effect of improving resistance to shear force, compressive stress, and bending moment.

In addition, in the present invention, the coping assembly is integrated with synthetic concrete in a state where the steel pipe is inserted into the steel pipe pile, so that the support rigidity at the head of the steel pipe pile is higher and the head of the steel pipe pile is more firmly and reliably reinforced. beneficial effects can be obtained.

In the present invention, a sealing member is provided on the inner circumferential surface of the lower plate reinforcement of the coping assembly, and a lower plate is provided on the bottom surface of the inserted steel pipe to block the internal space of the steel pipe pile, so that the pouring boundary of the composite concrete is moved to the upper side of the lower plate reinforcement and the lower plate By forming, it is possible to obtain an advantageous effect of efficiently reinforcing the cross section of a steel pipe pile by composite concrete.

In the present invention, the exposed reinforcing bars protruding from the end of the girder are coupled to the coupling plate and connected to the groove formed on the upper side of the coupling plate to form a lattice with a '∩'-shaped connecting member, in the direction of the bridge or at right angles to the bridge It is possible to obtain an advantageous effect of securing structural safety by inducing integral behavior such as a single body of girders arranged in the direction.

In addition, the present invention, the reinforcing bar installed at the upper end of the steel pipe pile is provided with a radiating member extending toward the inserted steel pipe, the inner end of the radiating member is installed in contact with the outer circumferential surface of the inserted steel pipe, so that the radiating member is inserted into the steel pipe and the steel pipe By accurately positioning it at a predetermined position between the piles, it is possible to obtain an effect of increasing the reinforcing precision of the composite concrete cast at the upper end of the steel pipe pile.

1 is a cross-sectional view showing the configuration of a pier installed on a mountain or water surface;
2 is a view showing the configuration of a pier system according to the present invention;
Figure 3 is a cutaway perspective view showing a part of the configuration of the coping part installed on the steel pipe pile of Figure 2 as a first embodiment of the present invention, cut away;
Figure 4 is a perspective view showing the inserted steel pipe body of Figure 3;
5 is a view showing a configuration in which reinforcing bars are arranged in the inserted steel pipe body of FIG. 4;
Figure 6 is a side cross-sectional view showing a state in which the steel tube body is installed in the steel pipe pile of Figure 2;
Figure 7 is a partially cut-away perspective view of a coping assembly constituting the coping part of Figure 3;
Figure 8 is a perspective view looking up from the lower side of the coping structure installed on the steel pipe pile of Figure 3;
Figure 9 is a cutaway perspective view showing a state in which composite concrete is synthesized at the upper end of the steel pipe pile of Figure 3 and the coping assembly is integrated with the steel pipe pile;
Figure 10 is a cutaway perspective view showing a part of the configuration of the coping part installed on the steel pipe pile of Figure 2 as a second embodiment of the present invention, cut away;
Figure 11 is a partially cut-away perspective view of the coping assembly of Figure 10;
12 is a cutaway perspective view showing a state in which composite concrete is synthesized at the upper end of the steel pipe pile of FIG. 10 and the coping assembly is integrated with the steel pipe pile;
13a and 13b are cut-away perspective views showing the configuration of a coping assembly according to another embodiment of the present invention;
14 is a cutaway perspective view showing the configuration of a coping assembly according to another embodiment of the present invention;
15a and 15b are diagrams showing a configuration for connecting exposed reinforcing bars in a state where a girder is mounted on a coping portion of a steel pipe pile;
16a and 16b are views showing the configuration of another embodiment in which exposed reinforcing bars are connected in a state where the girder is mounted on the coping part of the steel pipe pile;
17 is a view showing the configuration of another embodiment of connecting exposed reinforcing bars in a state where a girder is mounted on a coping part of a steel pipe pile;
18a to 18c are diagrams showing the configuration according to the construction sequence of the pier system according to the present invention.

Hereinafter, a pier system 1 according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. However, in describing the present invention, detailed descriptions of well-known functions or configurations will be omitted to clarify the gist of the present invention.

As shown in the drawing, the pier system 1 according to the first embodiment of the present invention has a steel pipe pile 10 with a lower end embedded in the ground and an accommodation space 10c formed by a hollow part of the steel pipe pile 10. ) The inserted steel pipe body 110 accommodated at the upper end of the steel pipe pile 10, the reinforcing bar 120 placed between the inner wall of the steel pipe pile 10 and the inserted steel pipe body 110, and mounted on the upper end of the steel pipe pile 10 A coping assembly 130 on which the girder 150 is mounted, a composite concrete 141 that is cast in place to integrate the steel pipe pile 10, the inserted steel pipe body 110, and the coping assembly 130, and the coping assembly 130 A girder 150 whose end is mounted on the coping formed by the girder 150, a precast bottom plate 160 whose end is placed on the girder 150 and mounted, and a girder 150 and a precast bottom plate 160 cast on site ) and topping concrete 142 forming the upper surface of the bridge.

Here, the inserted steel pipe body 110, the reinforcing bar 120, the coping assembly 130, and the composite concrete 141 are the coping portion 101 for the girder 150 to be placed on the upper end of the steel pile pipe 10. ) constitutes

As shown in FIG. 4, the inserted steel pipe body 110 is formed with a cross section accommodated in the receiving space 10c of the steel pipe pile 10, and the outer peripheral surface at the upper end of the inserted steel pipe 111. The holding member 112 protrudes in the radial direction and spans the upper end of the steel pipe pile 10, and the steel pipe pile 10 is accommodated in the cross section of the accommodation space, but the high-viscosity poured concrete is applied to the inner circumference of the steel pipe pile 10 and It consists of a lower plate 113 formed to the extent that it does not leak through the gap of the.

The hooking member 112 has a stepped portion 112a having a height deviation of the bottom surface at its radial end, and as shown in FIG. 6, the stepped portion 112a spans the upper end of the steel pipe pile 10. Accordingly, when the stepped portion 112a of the holding member 112 is placed on the upper end of the steel pipe pile 10, the inserted steel pipe body 110 is in a predetermined position with respect to the steel pipe pile 10, so the inserted steel pipe body It becomes easy to arrange the steel pipe pile 10 and the concentric form (110).

The lower plate 113 is integrally coupled to the lower end of the inserted steel pipe 111, and is disposed spaced apart from the inner circumferential surface of the steel pipe pile 10 by a predetermined gap. Here, the gap is the diameter (113d) of the lower plate 113 to the extent that the amount of concrete leaking through the gap is small so that the upper space 10u of the lower plate 113 can be filled with concrete when the synthetic concrete 141 is poured. this is determined For example, the diameter 113d of the lower plate 113 may be determined to have a deviation of about 5 to 30 mm from the inner diameter 10d of the steel pipe pile 10. Here, the deviation is determined to be a dimension capable of inserting the lower plate 113 into the receiving space 10c of the steel pipe pile 10 while preventing leakage of the poured concrete. Although not shown in the drawings, a sealing member may be applied to the outer circumferential surface 113e of the lower plate 113 to reliably prevent leakage of the synthetic concrete 141. Accordingly, the composite concrete 141 is poured and cured in the form of filling the upper side of the lower plate 113.

When the inserted steel pipe body 110 is over the upper end of the steel pipe pile 10 by the step 112a of the engaging member 112, the center of the inserted steel pipe 111 is moved by the step 112a to the steel pipe pile 10. Since it is located within the center and the allowable range, the center of the lower plate 113 is also located within the center and the allowable range of the steel pipe pile 10. Therefore, the gap between the lower plate 113 and the inner circumferential surface of the steel pipe pile 10 is generated only within the allowable range along the circumferential direction.

As shown in FIG. 5, the reinforcing bar 120 surrounds the circumference of the inserted steel pipe 111 and connects the ring-shaped reinforcing bar 121 spaced apart in a number in the height direction and the ring-shaped reinforcing bar 121 in the vertical direction. It is configured to include a vertical reinforcing bar 122 and a radiating member 123 extending from the position of the plurality of vertical reinforcing bars 122 spaced apart in the circumferential direction toward the inside of the radius, and the inner circumferential surface of the steel pipe pile 10 and the inserted steel pipe It is disposed between the outer circumferential surfaces of (111). The radiation member 123 may be formed of reinforcing bars or steel, and may be formed of various materials for determining posture and position.

Here, the upper end 122u of the vertical reinforcing bar 122 is not buried in the composite concrete 141 but is buried by the topping concrete 142. Through this, the inserted steel pipe body 110 and the steel pipe pile 10 are integrated through the reinforcing bar 120 and the composite concrete 141, and the coping assembly ( 130), the girder 150, and the precast bottom plate 160 are integrated.

The radius outer end of the radial member 123 is formed with a hole through which the vertical reinforcement 122 passes, and the radius inner end extends to a position where it can contact the insertion steel pipe 111. Accordingly, as shown in FIG. 5, the center of the reinforcing bar 120 is arranged to coincide with the center of the inserted steel pipe 111 by the radiation member 123 within an allowable range.

On the other hand, the reinforcing bars 120 are manufactured in advance at the factory, transported to the construction site, lifted with a crane, and the steel pipe holding member 113 is inserted into the steel pipe pile 10 so that the lower part of the middle portion of the steel pipe 111 is inserted into the steel pipe. It is simply field installed by placing it over the top of the pile (10). On the other hand, according to another embodiment of the present invention, the reinforcing bar 120 is pre-fabricated and assembled together with the inserted steel pipe body 110 at the factory and transported to the construction site, and the inserted steel pipe body 110 and the reinforcing bar 120 It may be installed in the field on the steel pipe pile 10 in this assembled state.

As shown in FIG. 7, the coping assembly 130 includes a base steel pipe 131 formed of a steel pipe having an inner space surrounding the upper portion of the inserted steel pipe 111, and a base steel pipe 131 formed of a reinforced concrete structure. ) And the coping member 132 synthesized on the outer circumferential surface of the steel pipe pile 10 by passing through the base steel pipe 131 and coupled with the coping member 132 and extending radially inward toward the inner space of the base steel pipe 131. The support member 133 spanning the upper end, the coping reinforcing bars 134 forming a lattice shape inside the base steel pipe 131, and the annular plate coupled to the base steel pipe 131 at the lower end of the base steel pipe 131. The shape of the lower plate reinforcement 135, the upper surface shear connector 136 protruding from the upper surface of the lower plate reinforcement 135 and embedded in the coping member 132, and the steel pipe pile formed along the inner circumferential surface of the lower plate reinforcement 135 ( 10) includes a sealing material 137 that eliminates the gap between the outer circumferential surface and the outer circumferential surface.

Here, the base steel pipe 131 is formed as a corrugated steel pipe in which concave and convex portions are repeated in a wave form on the inner and outer circumferential surfaces, and is firmly integrated against the shear force in the vertical direction with the coping member 132 formed of concrete as the main material. do.

The coping member 132 is integrally formed with the base steel pipe 131 on the outer circumferential surface of the base steel pipe 131, and is pre-formed in a factory as a reinforced concrete structure mainly made of concrete having high compressive strength. The coping member 132 is provided with a through portion accommodating the insertion steel pipe 111 through the inner space of the base steel pipe 131 . The upper surface of the coping member 132 may be determined to be the same as the height of the upper end of the base steel pipe 131, and the lower surface of the coping member 132 is defined by the upper surface of the lower plate reinforcing member 135. Although not shown in the drawing, the upper surface of the coping member 132 may be formed higher than the upper end of the base steel pipe 131 if necessary. The upper surface of the coping member 132 is preferably formed flat for mounting the girder 150.

Support member 133 is disposed in the radial direction through the base steel pipe 131. The outside of the radius of the support member 133 is embedded in the coping member 132 to reinforce the tensile strength of the coping member 132, and the inside of the radius of the support member 133 is disposed in the inner space of the base steel pipe 131 to make the steel pipe The coping assembly 130 can be mounted on the top of the pile 10. Since the support member 133 is formed of a steel material to support the shear force and moment acting on the coping portion 101, it is preferably formed of a section steel having a sufficient cross section. For example, as illustrated in the drawings, it may be formed of an H-beam having a section modulus twice or more higher than that of the engaging member 112.

The coping reinforcing bar 134 reinforces the inside of the coping member 132 formed of concrete as the main material, and at the same time protrudes inward into the inner space of the base steel pipe 131 to reinforce the composite concrete 141 to be cast in-situ later. As shown in FIGS. 3 and 7, the coping reinforcing bars 134 form a lattice shape in the inner space of the base steel pipe 131, so that the composite concrete 141 is placed without interfering with the pouring of the composite concrete 141. The effect of reinforcing the tensile strength can be enhanced.

The lower plate reinforcement 135 is coupled to the lower end of the base steel pipe 131 by welding or the like to limit the lower limit of the coping member 132, and as shown in FIG. 8, the inner peripheral surface 135i has a sealing member capable of elastic deformation ( 137) is formed in a ring shape and serves to prevent leakage of the composite concrete 141 by being in close contact with the outer circumferential surface of the steel pipe pile 10. An upper surface shear connector 136 protrudes from the upper surface of the lower plate stiffener 135 and is buried in the coping member 132 to couple the lower plate stiffener 135 and the coping member 132 .

The coping assembly 130 having the above configuration is prefabricated in a factory, transported to a construction site, and lifted by a crane, so that the steel pipe 111 inserted into the inner space of the base steel pipe 131 is accommodated, and the upper end of the steel pipe pile 10 The bottom surface of the support member 133 is simply installed in the field by being mounted in a supported form in contact. At this time, since both the supporting member 133 of the coping assembly 130 and the engaging member 112 of the inserted steel pipe body 110 are mounted on the upper end of the steel pipe pile 10, the supporting member 133 and the engaging member 112 ) Adjust the posture by rotating in the circumferential direction so that they are mounted on the top of the steel pipe pile 10 without interfering with each other.

The composite concrete 141 is in a state where the steel pipe body 110 and the reinforcing bar 120 are installed at the upper end of the steel pipe pile 10, and the coping assembly 130 is raised and mounted on the steel pipe pile 10. In the concrete pouring machine (not shown), unhardened concrete is poured into the upper inside of the base steel pipe 131 of the coping assembly 130 and the inside 10u of the inserted steel pipe 111 and cured.

At this time, since the inner circumferential surface (135i) of the lower plate reinforcement 135 is finished with a sealing material 137 between the outer circumferential surface of the coping assembly 130 and the steel pipe pile 10, the poured concrete leaks out of the steel pipe pile 10. prevented from becoming In addition, since the lower plate 113 is blocked downward between the inner circumferential surface of the steel pipe pile 10 and the insertion assembly 110, leakage of the poured concrete to the lower part of the steel pipe pile 10 is prevented. Accordingly, the composite concrete 141 is filled only at the upper end of the steel pipe pile 10, and the nose composed of the steel pipe pile 10, the inserted steel pipe body 110, the reinforcing bar 120, and the coping assembly 130 At the same time as integrating the ping part 101, reinforcement of the head of the steel pipe pile 10 is performed.

On the other hand, in the composite concrete 141, in a state where the end of the girder 150 is placed on the upper surface of the coping member 132 and the precast floor plate 160 is placed on the girder 150, the topping concrete 142 It may be formed by pouring at once together.

Hereinafter, a pier system according to a second embodiment of the present invention will be described in detail.

However, in order to clarify the gist of the second embodiment, the same or similar reference numerals are given to components identical or similar to those of the first embodiment described above, and descriptions thereof will be omitted.

As shown in FIG. 12, the coping portion 201 of the pier system according to the second embodiment of the present invention is installed to span the steel pipe pile 10 and the upper end of the steel pipe pile 10 ( 210), a reinforcing bar 220 surrounding the insertion steel pipe 211 of the insertion steel pipe body 210, and a coping member 232 made of concrete as a main material, and the coping assembly 230 mounted on the steel pipe pile 10 ) and the composite concrete 241 that is poured into the upper interior 10u of the steel pipe pile 10 and synthesized.

As shown in FIG. 10, the insertion steel pipe body 210 is composed of an insertion steel pipe 211 formed in a cross section accommodated in the upper inside 10u of the accommodation space of the steel pipe pile 10, and the insertion steel pipe 211 Formed with a predetermined gap between the holding member (212, the same as or similar to the configuration of the first embodiment) protruding radially from the outer circumferential surface of the upper end and spanning the upper end of the steel pipe pile 10, and the inner circumferential surface of the steel pipe pile 10 It includes a lower plate 213 and a plurality of protruding members 214 formed on the upper surface of the lower plate 213 to be spaced apart from each other and protruding upward.

Here, unlike the first embodiment in which the insertion steel pipe 211 is directly coupled to the lower plate 213, the insertion steel pipe 211 of the second embodiment is coupled to the upper end of the protruding member 214. Accordingly, between the lower plate 213 and the inserted steel pipe 211, a communication passage 214p corresponding to the upwardly protruding height of the protruding member 214 communicates the inner space of the inserted steel pipe 211 with the outside.

Accordingly, in the process of integrating the insertion steel pipe body 210 and the coping assembly 230 with the composite concrete 241 cured by pouring unhardened concrete into the insertion steel pipe 211, the inside of the insertion steel pipe 211 As the cast-in-place concrete is discharged through the communication passage 214p, air pockets are not generated inside the inserted steel pipe 211, and the casting time can be reduced.

On the other hand, in the embodiment illustrated in the drawing, although the configuration in which the communication passage 214p is formed by the insertion steel pipe 211 being spaced apart from the lower plate 213 by the protruding member 214 as an example, the protruding member 214 includes being formed as a single member as part of the insertion steel pipe 211.

Unlike the reinforcing bar 120 in the first embodiment, the reinforcing bar 220 may not include a radiating member.

As shown in FIG. 11, the coping assembly 230 does not include a base steel pipe unlike the first embodiment described above, and is formed in the form of an annular plate extending radially inward toward the insertion steel pipe 211, A support member 233 whose edge portion is embedded in the coping member 232 and whose non-embedded radius inner portion spans the upper end of the steel pipe pile 10, and is formed in the form of an annular plate to be spaced downward from the support member 233. The lower plate stiffener 235 disposed at the position, and the outer portion of the radius of the support member 233 is wrapped around the lower plate stiffener 235 in close contact with the upper surface of the support member 233 and the lower plate stiffener 235. A coping member 232 having a through portion formed therein, an upper surface shear connector 236 protruding from the upper surface of the lower plate stiffener 235 and buried in the coping member 232, and a lower plate stiffener 235 as shown in FIG. The sealing material 237 formed along the inner circumferential surface of the steel pipe pile 10 to eliminate the gap between the outer circumferential surface of the steel pipe pile 10 and the radially inner end of the support member 233 to be exposed by the penetrating portion of the coping member 232 integrally A cross-section reinforcing member 239 is formed to reinforce the cross-section of the supporting member 233 .

The coping member 232 is a reinforced concrete structure made of concrete as a main material and is synthesized in a form that surrounds the radial outer portion of the support member 233, and the inserted steel pipe 211, the reinforcing bar 220, and the cross-section reinforcement 239 are A through portion is provided in the central portion so as to be exposed. The upper surface of the coping member 232 is formed higher than the support member 233 so that the through portion is formed with a sufficient length, and the lower surface of the coping member 232 is defined by the upper surface of the lower plate reinforcement member 235. The support shear connector 233a and the upper shear connector 236, which increase the degree of coupling with the coping member 232, are protruded from the support member 233 and the lower plate stiffener 235, and are embedded in the coping member 232.

The radially outer portion of the supporting member 233 is embedded in the coping member 232 to reinforce the tensile strength of the coping member 232, and the radially inner portion of the supporting member 233 is disposed to extend radially inward to the steel pipe pile ( 10) so that the coping assembly 230 can be mounted on the upper end. However, the support member 133 of the first embodiment is directly mounted on the top of the steel pipe pile 10, and the coping assembly 130 is mounted on the top of the steel pipe pile 10, whereas the support member of the second embodiment (233) is formed in the shape of an annular plate to mount the coping assembly 230 on top of the steel pipe pile 10 in such a way that it is mounted on the holding member 212 of the inserted steel pipe body 210.

At this time, in order to reinforce the bending rigidity of the support member 233, a cross-section reinforcing member 239 having a larger cross section is coupled to the support member 233. As illustrated in the drawing, the cross-section stiffener 239 may be formed in a ring shape at the radially inner end of the support member 233, and although not shown in the figure, the cross-section stiffener 239 is the upper surface of the support member 233. Including all configurations arranged in the form of curves or closed curves of various shapes such as ellipses. Through this, the bending rigidity of the support member 233 is reinforced by the curved cross-section reinforcing member 239, so that shear force and bending moment acting on the coping portion 201 can be supported more.

The lower plate reinforcement 235 is disposed at a position spaced downward from the support member 233 and is synthesized in a form that limits the lower limit of the coping member 232, and as shown in FIG. 12, a sealing material capable of elastic deformation on the inner circumferential surface 237 is formed in a ring shape, and serves to prevent leakage of the composite concrete 241 by being in close contact with the outer circumferential surface of the steel pipe pile 10. An upper surface shear connector 236 protrudes from the upper surface of the lower plate stiffener 235 and is embedded in the coping member 232 to couple the lower plate stiffener 235 and the coping member 232 .

As in the first embodiment, the coping assembly 230 is manufactured in advance in a factory, transported to a construction site, and lifted by a crane, and as shown in FIG. 10, a steel pipe 211 inserted into the inner space of the support member 233 This is accommodated, the holding member 212 is mounted on the upper end of the steel pipe pile 10, and the support member 233 is mounted on the holding member 212, the coping assembly 230 of the steel pipe pile 10 Simple field installation on top.

On the other hand, according to another embodiment of the present invention, as shown in Figure 13a, the coping assembly 230 ', the inner reinforcing bar 232b reinforcing the inside of the coping member 232 is reinforced, the inner reinforcing bar 232b ) It may be configured to be installed at the end of the reinforcing bar coupler (232c).

This can be manufactured by installing the inner reinforcing bar 232b in which the reinforcing bar coupler 232c is installed inside the formwork before molding the coping member 232 of the coping assembly 230', and pouring and curing the concrete. Then, as shown in FIG. 13B, by fastening and connecting a ring-shaped coupling shear connector 232x to the surface 232s of the penetration portion, the coping assembly 230 'is a composite concrete 241 poured into the penetration portion can be bonded more firmly.

On the other hand, according to another embodiment of the present invention, as shown in FIG. 14, in the coping member 232 of the coping assembly 230", the shear key 232x' is recessed on the surface of the penetration part where the composite concrete 241 is poured. ) is formed to assist in a strong connection with the composite concrete 241 poured into the penetrating portion of the coping assembly 230 ". Meanwhile, the shear key 232x' may be formed in a convex shape.

Meanwhile, in the drawings, a configuration in which a coupling shear connector 232x using a reinforcing bar coupler 232c is installed in the coping assembly 230 of the second embodiment is illustrated, but the present invention is of the coping assembly 130 of the first embodiment It includes a configuration in which a coupling shear connector 232x using a reinforcing bar coupler 232c is installed in a through portion exposed by forming the coping member 132 higher than the base steel pipe 131.

The synthetic concrete 241 is in a state where the steel pipe body 210 and the reinforcing bar 220 are installed at the upper end of the steel pipe pile 10, and the coping assembly 230 is raised and mounted on the steel pipe pile 10. In the concrete casting machine (not shown), unhardened concrete is poured into the penetration part of the coping member 232 of the coping assembly 230 and the inside of the inserted steel pipe 211, and cured.

At this time, the concrete poured into the insertion steel pipe 211 is outside the insertion steel pipe 211 through the communication passage 214p formed by the protruding member 214 between the insertion steel pipe 211 and the lower plate 213. Since it is discharged to 88, it is possible to perform the pouring process in a shorter time while preventing air pockets from being generated inside the insertion steel pipe 211.

Similarly, since the inner circumferential surface of the lower plate reinforcement 235 is finished with a sealing material between the outer circumferential surface of the coping assembly 230 and the steel pipe pile 10, leakage of the poured concrete to the outside of the steel pipe pile 10 is prevented. In addition, since the lower plate 213 is blocked downward between the inner circumferential surface of the steel pipe pile 10 and the insertion assembly 210, leakage of the poured concrete to the lower part of the steel pipe pile 10 is prevented. Accordingly, the composite concrete 141 is filled only at the upper end of the steel pipe pile 10, and the nose composed of the steel pipe pile 10, the inserted steel pipe body 210, the reinforcing bar 220, and the coping assembly 230 At the same time as integrating the ping part 201, reinforcement of the head of the steel pipe pile 10 is performed.

On the other hand, in the composite concrete 241, in a state where the end of the girder 150 is placed on the upper surface of the coping member 232 and the precast floor plate 160 is placed on the girder 150, the topping concrete 142 It may be formed by pouring at once together.

The term 'precast floor plate 160' described in the detailed description and claims of the present invention, as opposed to concrete poured on-site, consists of a floor plate prefabricated with the entire thickness of the finished floor plate and a finished floor plate. It is defined as including both prefabricated decks with only partial thickness and prefabricated concrete panels installed between girders to support cast-in-place decks.

As described above, when the copings 101 and 201 for the construction of the pier system 1 are installed, the girders 150 are mounted on the copings 101 and 201. Various girders such as concrete girders, steel girders, steel composite girders, and girders in which prestress is introduced by strands or steel rods may be applied to the girder 150. For convenience, the concrete girder shown in the drawings will be described below as an example.

As shown in FIG. 15A, when the end of the girder 150 is mounted on the upper surface of the coping assembly 130 or the composite concrete 141, the exposed reinforcing bar 152 protrudes in the longitudinal direction of the girder 150 at the end of the girder 150. is formed That is, the first girder 150A faces the third girder 150C, and the second girder 150B faces the fourth girder 150D.

The exposed reinforcement 152 protruding in the longitudinal direction at the end of each of the girders 150A, 150B, 150C, 150D; 150 is coupled to a coupling plate 155 having a plurality of grooves 155a formed thereon. The combination of the exposed reinforcing bar 152 and the coupling plate 155 may be integrally joined by welding or the like, and as shown in FIG. 16a, the coupling nut 152a is fastened to the coupling plate 155 to ) may be combined with

Then, the '∩'-shaped parallel connection member 156 is inserted into the groove 155a of the coupling plate connected to the girders facing each other and fitted. Accordingly, as shown in FIG. 15B, the first girder 150A and the third girder 150C facing each other are connected to each other by a parallel connecting member 156, and the second girder 150B facing each other and The fourth girder 150D is connected to each other by parallel connection members 156, so that the parallel connection members 156 connecting the facing coupling plates 155 form a lattice shape. In addition, the exposed reinforcing bar 152, the coupling plate 155, and the parallel connection member 156 are buried in the topping concrete 142 and behave integrally.

Through this, even if the end spacing of the girders facing each other is deviated from the predetermined size, the effect of enabling the connection between the girders 150 by the coupling plate 155 and the parallel connection member 156 can be obtained. In addition, as the girders 150 spaced apart from each other are connected by the coupling plate 155 and the parallel connection member 156, it is possible to obtain an advantage of inducing them to behave as if they are one girder in the axial direction. In addition, in the coping part 101 where the ends of the four girders are mounted at 90 degree intervals, the lattice-shaped parallel connecting members 155 connecting each of the girders in the longitudinal direction allow the four girders to move as one. Thus, the advantage of inducing the bottom plate of the pier to behave in a single plate shape can also be obtained.

Meanwhile, in the drawings, a configuration in which four girders are mounted at an interval of 90 degrees on one coping portion 101 has been described as an example, and a configuration in which four girders are mounted at intervals of 90 degrees is described as an example below, but this is for convenience. This is an example, and the present invention includes a configuration in which a plurality of girders are mounted on one coping part 101 at an angle of 90 degrees or less or more, and one to three girders or five or more girders are one coping part. Includes all configurations mounted on (101).

Meanwhile, according to another embodiment of the present invention, as shown in FIG. 16A, the coupling plate 255 may be formed in a rectangular shape. When the coupling plate 255 is formed in a rectangular shape, it cannot be mounted on the coping assembly 130 in a state in which the coupling plate 255 is previously coupled to the exposed reinforcing bars 152 of the girder 150. Therefore, a plurality of coupling grooves 255b are formed on the lower side of the coupling plate 255, and the exposed reinforcing bar 152 formed with a thread at the end is fastened with the coupling nut 152a while receiving it in the coupling groove 255b. Thus, it is possible to fix the coupling plate 255 to the end of the exposed reinforcing bar 152. Then, similar to that shown in FIG. 15B, a '∩'-shaped parallel connection member 156 is inserted into the groove 255a of the coupling plate 255, so that the facing girder is parallel to the coupling plate 255. They are coupled via the connecting member 156.

Through this, even if there is a deviation in the exposed length of the exposed reinforcing bars 152, the distance to the coupling plate 255 can be adjusted by the fastening position of the coupling nut 152a, so the design of the girder 150 in the coping portion 101 You can get the advantage of being able to construct accurately with the dimensions at the time.

Meanwhile, as shown in FIG. 16B, a member fixing hole 255c is provided near the vertex of the quadrangular coupling plate 255', and both ends of the '∩'-shaped diagonal connecting member 157 fix the member. It is inserted and installed into the ball 255c. At this time, one side of the first girder 150A and the other side of the second girder 150B are connected in a diagonal shape, and at the same time, the other side of the first girder 150A and the second girder 150A are arranged to face each other with respect to the coping assembly 130. One side of the two girders (150B) is connected in a diagonal form. Through this, a plurality of girders (150A, 150B, 150C, 150D; 150) disposed on the upper side of the coping assembly 130 are connected in a diagonal form in addition to the lattice form to behave as if they were a single member to realize higher load capacity. can

On the other hand, as illustrated in FIG. 17, the exposed reinforcing bar ( 152) may be configured to be coupled to the coupling member 355, respectively. Here, the coupling member 355 includes an outer plate 355e of a rectangular shape coupled to the exposed reinforcing bar 152 and an inner plate 355i formed in a shape penetrating the inserted steel pipe 111 of the inserted steel pipe body 110 and , and a connecting portion 355x connecting the outer plate 355e and the inner plate 355i. In order to accommodate the length deviation of the exposed reinforcing bars 152 protruding from each girder 150, the outer plate 355e is provided with a coupling groove 355b for accommodating the threaded exposed reinforcing bars 152, as shown in FIG. 16A. Similar to the illustrated configuration, the exposed reinforcing bar 152 and the coupling member 355 are connected with a coupling nut. This does not have a '∩'-shaped parallel connecting member 156 or a '∩'-shaped diagonal connecting member 157, and at the site, each exposed reinforcing bar 152 is inserted into the coupling groove of the coupling member 355. Connecting to (355b) with a coupling nut provides the advantage of simply completing the construction.

That is, the pile installation step of embedding the lower end of the steel pipe pile 10 in the ground by driving the steel pipe pile 10 having an internal space into the ground, preparing the inserted steel pipe body 110 manufactured in the factory, and holding member 112 ) After installing the inserted steel pipe at the top of the steel pipe pile 10, the pre-manufactured reinforcing bar 120 is seated in the space between the inserted steel pipe 111 and the steel pipe pile 10, and pre-manufactured in the factory. The coping assemblies 130 and 230 are lifted and installed on the upper end of the steel pipe pile 10, and the end of the pre-manufactured girder 150 is placed on the upper surface of the coping assembly 130 and 230, Figures 15a to 230 As shown in 17, when the exposed reinforcement 152 protruding from the end of the girder 150 is interconnected using the coupling plates 155 and 255 and the connecting members 156 and 157 or the coupling member 355, It becomes the configuration shown in FIG. 18A.

Then, as shown in FIG. 18B, the precast floor plate 160 manufactured in advance at the factory and transported to the site is installed so as to rest on the girder 150. Accordingly, an empty space (99 in FIG. 2) is created between the girders 150 and above the coping assemblies 130 and 230, and a formwork is installed on the edge of the pier system 1 and the topping concrete 142 is poured. By curing, the girder 150, the coupling plates 155 and 255, the coupling member 355, the exposed reinforcing bar 152, and the connecting members 156 and 157 are integrated.

Here, the coping parts 101 and 201 may be integrated by pouring the composite concrete 141 and 241 before placing the ends of the girder 150 on the coping assemblies 130 and 230. Alternatively, in another embodiment of the present invention, when pouring the topping concrete 142 described later, the insertion steel pipe 111 and the steel pipe pile 10 are placed together in the upper space 10u, and the composite concrete 141 and The placing of the topping concrete 142 and the curing process may be performed simultaneously.

Then, the pavement surface is coated on the upper surface of the topping concrete 142 and handrails are installed to complete the construction of the pier system 1.

In the pier system 1 according to the present invention configured as described above, the inserted steel tubes 110 and 210, the reinforcing bars 120 and 220, and the coping assemblies 130 and 230 are all manufactured in advance at the factory, Since the installation is simply completed by lifting and mounting it, it is possible to greatly shorten the construction period at the site and obtain the advantage of reducing safety accidents of workers.

In particular, the upper end of the steel pipe pile 10 forming the lower structure of the pier not only has high rigidity in the form of a double pipe by the insertion steel pipe 111 concentric with the steel pipe pile 10, but also the coping members 132 and 232 ) By greatly increasing the bending rigidity with the composite cross section by the support members 133 and 233 extending from, an advantageous effect of expressing high load capacity due to excellent resistance to the moment and shear force acting greatly on the coping portion can be obtained. .

In the above, preferred embodiments of the present invention have been described by way of example, but the scope of the present invention is not limited only to these specific embodiments, and can be appropriately changed within the scope described in the claims.

1: pier system 110: inserted steel tube
111: insertion steel pipe 112, 212: engaging member
113: lower plate 120: rebar
123: radiation member 130, 230: coping assembly
131: base steel pipe 132, 232: coping member
133, 233: support member 134: coping reinforcing bar
135, 235: lower plate reinforcement 141, 241: composite concrete
142: topping concrete 150: girder
152: exposed rebar 155: coupling plate
156, 157: connecting member

Claims (19)

Steel pipe piles with lower ends embedded in the ground;
An insertion steel pipe in which an engaging member spanning the upper end of the steel pipe pile protrudes from an outer circumferential surface, and a lower portion of the engaging member is accommodated in an upper end of the receiving space of the steel pipe pile;
a reinforcing bar disposed between an inner circumferential surface of the steel pipe pile and an outer circumferential surface of the inserted steel pipe;
A base steel pipe formed of a steel pipe having an internal space surrounding a part of the inserted steel pipe, a support member integrally coupled with the base steel pipe and extending inside the radius of the base steel pipe to span the upper end of the steel pipe pile, and concrete A precast coping assembly including a coping member as a main material and formed in the center of a through portion through which the reinforcing bars pass through the base steel pipe;
A composite concrete for integrating the steel pipe pile, the insertion steel pipe, and the coping assembly by casting concrete on the inside of the inserted steel pipe and the base steel pipe;
A girder whose end rests on the upper surface of the coping assembly;
Exposed reinforcing bars protruding from the end of the girder mounted on the upper surface of the coping assembly;
A coupling plate coupled to the exposed reinforcing bar and having a plurality of grooves formed thereon;
a '∩'-shaped parallel connecting member having both ends inserted into the grooves of the coupling plate coupled to the exposed reinforcing bars extending from the girder facing the upper surface of the coping assembly;
A precast floor plate mounted on the girder and installed to be at least a part of the floor plate;
Topping concrete that integrates the precast floor plate, the girder, the coping assembly, and the composite concrete;
A pier system comprising:
Steel pipe piles with lower ends embedded in the ground;
An insertion steel pipe in which an engaging member spanning the upper end of the steel pipe pile protrudes from an outer circumferential surface, and a lower portion of the engaging member is accommodated in an upper end of the receiving space of the steel pipe pile;
a reinforcing bar disposed between an inner circumferential surface of the steel pipe pile and an outer circumferential surface of the inserted steel pipe;
A base steel pipe formed of a steel pipe having an internal space surrounding a part of the inserted steel pipe, a support member integrally coupled with the base steel pipe and extending inside the radius of the base steel pipe to span the upper end of the steel pipe pile, and concrete A precast coping assembly including a coping member as a main material and formed in the center of a through portion through which the reinforcing bars pass through the base steel pipe;
A composite concrete for integrating the steel pipe pile, the insertion steel pipe, and the coping assembly by casting concrete on the inside of the inserted steel pipe and the base steel pipe;
A girder whose end rests on the upper surface of the coping assembly;
Exposed reinforcing bars protruding from the end of the girder mounted on the upper surface of the coping assembly;
A coupling member having a rectangular outer plate coupled to the exposed reinforcing bar, an inner plate formed in a shape penetrating the insertion steel pipe, and a connecting portion connecting the outer plate and the inner plate;
A precast floor plate mounted on the girder and installed to be at least a part of the floor plate;
Topping concrete that integrates the precast floor plate, the girder, the coping assembly, and the composite concrete;
A pier system comprising:
According to claim 1,
The coupling plate is formed in a rectangular shape, and a member fixing hole is provided at an edge of the coupling plate;
It is formed in a '∩' shape and both ends are inserted into the member fixing hole and installed, connecting one side of the first girder and the other side of the second girder arranged to face each other with respect to the coping assembly in a diagonal form, A diagonal connecting member connecting the other side of the first girder and the one side of the second girder in a diagonal shape;
A pier system further comprising.
According to any one of claims 1 to 3,
The base steel pipe is formed of a corrugated steel pipe having an inner circumferential surface and an outer circumferential surface formed in a form in which concave parts and convex parts are repeated in a wave form and having an internal space,
The pier system, characterized in that the support member protrudes inwardly into the interior space through the outer and inner sides of the base steel pipe.
Steel pipe piles with lower ends embedded in the ground;
An insertion steel pipe in which an engaging member spanning the upper end of the steel pipe pile protrudes from an outer circumferential surface, and a lower portion of the engaging member is accommodated in an upper end of the receiving space of the steel pipe pile;
a reinforcing bar disposed between an inner circumferential surface of the steel pipe pile and an outer circumferential surface of the inserted steel pipe;
A support member extending in a radially inward direction toward the insertion steel pipe and formed in the form of an annular plate covering a part of the insertion steel pipe and spanning the upper end of the steel pipe pile, and concrete as a main material in a form surrounding the edge of the support member The synthesized coping member through which the reinforcing bars pass through is formed in the center, a cross-section reinforcing member formed in a closed cross-section shape and integrally coupled to the support member, and protruding from the support member to assist in coupling with the coping member. a precast coping assembly including a support shear connector embedded in the coping member;
A composite concrete for integrating the steel pipe pile and the coping assembly by casting concrete on the inside of the inserted steel pipe and the coping assembly;
A girder whose end rests on the upper surface of the coping assembly;
Exposed reinforcing bars protruding from the end of the girder mounted on the upper surface of the coping assembly;
A coupling plate coupled to the exposed reinforcing bar and having a plurality of grooves formed thereon;
a '∩'-shaped parallel connecting member having both ends inserted into the grooves of the coupling plate coupled to the exposed reinforcing bars extending from the girder facing the upper surface of the coping assembly;
A precast floor plate mounted on the girder and installed to be at least a part of the floor plate;
Topping concrete for integrating the precast floor plate, the girder, and the composite concrete;
A pier system comprising:
Steel pipe piles with lower ends embedded in the ground;
An insertion steel pipe in which an engaging member spanning the upper end of the steel pipe pile protrudes from an outer circumferential surface, and a lower portion of the engaging member is accommodated in an upper end of the receiving space of the steel pipe pile;
a reinforcing bar disposed between an inner circumferential surface of the steel pipe pile and an outer circumferential surface of the inserted steel pipe;
A support member extending in a radially inward direction toward the insertion steel pipe and formed in the form of an annular plate covering a part of the insertion steel pipe and spanning the upper end of the steel pipe pile, and concrete as a main material in a form surrounding the edge of the support member The synthesized coping member through which the reinforcing bars pass through is formed in the center, a cross-section reinforcing member formed in a closed cross-section shape and integrally coupled to the support member, and protruding from the support member to assist in coupling with the coping member. a precast coping assembly including a support shear connector embedded in the coping member;
A composite concrete for integrating the steel pipe pile and the coping assembly by casting concrete on the inside of the inserted steel pipe and the coping assembly;
A girder whose end rests on the upper surface of the coping assembly;
Exposed reinforcing bars protruding from the end of the girder mounted on the upper surface of the coping assembly;
A coupling member having a rectangular outer plate coupled to the exposed reinforcing bar, an inner plate formed in a shape penetrating the insertion steel pipe, and a connecting portion connecting the outer plate and the inner plate;
A precast floor plate mounted on the girder and installed to be at least a part of the floor plate;
Topping concrete for integrating the precast floor plate, the girder, and the composite concrete;
A pier system comprising:
According to claim 5,
The coupling plate is formed in a rectangular shape, and a member fixing hole is provided at an edge of the coupling plate;
It is formed in a '∩' shape and both ends are inserted into the member fixing hole and installed, connecting one side of the first girder and the other side of the second girder arranged to face each other with respect to the coping assembly in a diagonal form, A diagonal connecting member connecting the other side of the first girder and the one side of the second girder in a diagonal shape;
A pier system further comprising.
The method of any one of claims 5 to 7, wherein the coping assembly,
an internal reinforcing bar reinforcing the inside of the coping member;
a reinforcing bar coupler installed at an end of the inner reinforcing bar so that an end of the through portion is exposed to the through portion;
A coupling shear connection member connected to the reinforcing bar coupler in a state in which the coping member is synthesized with the support member;
A pier system further comprising.
According to any one of claims 5 to 7,
A pier system, characterized in that a shear key formed concave or convex is formed on the inner circumferential surface of the penetrating portion of the coping member.
The method of any one of claims 1 to 3 or any one of claims 5 to 7,
A pier system, characterized in that the lower plate is provided at the lower part of the inserted steel pipe to reduce the gap with the inner circumferential surface of the steel pipe pile, and the composite concrete is filled on the upper side of the lower plate.
According to claim 10,
On the upper surface of the lower plate, a plurality of protruding members are spaced apart from each other and protrude upward, and the insertion steel pipe is coupled to the upper end of the protruding member to form a communication passage for communicating between the lower plate and the insertion steel pipe. .
The method of any one of claims 1 to 3, wherein the coping assembly,
At the lower end of the base steel pipe, a lower plate reinforcing member in the form of an annular plate coupled to the base steel pipe and in close contact with the bottom surface of the coping member;
A sealing material formed along the inner circumferential surface of the lower plate reinforcing material to eliminate gaps between the outer circumferential surface of the steel pipe pile;
A pier system, characterized in that configured to further include.
The method of any one of claims 5 to 7, wherein the coping assembly,
a lower plate reinforcing member in the form of an annular plate formed in close contact with the lower surface of the coping member;
an upper surface shear connector protruding from the upper surface of the lower plate stiffener and buried in the coping member;
A sealing material formed along the inner circumferential surface of the lower plate reinforcing material to eliminate gaps between the outer circumferential surface of the steel pipe pile;
A pier system, characterized in that configured to further include.
The rebar according to any one of claims 1 to 3 or 5 to 7, wherein the reinforcing bar,
Ring-shaped reinforcing bars wrapped around the circumference of the inserted steel pipe and spaced apart in a height direction;
vertical reinforcing bars connecting the ring-shaped reinforcing bars in a vertical direction;
a radiation member extending from a plurality of positions of the vertical reinforcing bars spaced apart in a circumferential direction toward an inner side of a radius;
A pier system comprising, being manufactured in advance at a factory and transported to a construction site, characterized in that the position of the reinforcing bar with respect to the inserted steel pipe is determined by the radius inner end of the radiating member.
As a construction method of the pier system,
A pile installation step of driving a steel pipe pile having an internal space so that the lower end of the steel pipe pile is buried in the ground;
An insertion steel pipe installation step of preparing an insertion steel pipe having an engaging member protruding from an outer circumferential surface and installing the insertion steel pipe to the steel pipe pile so that the engaging member spans the upper end of the steel pipe pile;
A reinforcing bar installation step of installing a pre-manufactured reinforcing bar to be seated in the inner space, and installing the upper end of the reinforcing bar to be exposed to the upper part of the steel pipe pile;
A base steel pipe formed of a steel pipe having an inner space surrounding a portion of the inserted steel pipe, a support member integrally coupled with the base steel pipe and extending to the inside of the radius of the base steel pipe, and a reinforced concrete structure. Prepare a precast coping assembly, which includes a coping member formed in the center of the penetration part through which the reinforcing bars pass through, and prepared in advance at the factory, so that the coping assembly is positioned so that the support member spans the upper end of the steel pipe pile. A coping assembly installation step to be installed to be mounted on;
A girder mounting step of mounting a girder so that an end of the girder is placed on the upper surface of the coping assembly;
A coupling plate having a plurality of grooves formed on the upper side is coupled to the exposed reinforcing bar protrudingly extended from the end of the girder mounted on the upper surface of the coping assembly, and the exposed reinforcing bar extending from the girder facing the upper surface of the coping assembly. A girder connection step of inserting and installing both ends of a '∩'-shaped parallel connection member into the groove of the coupled coupling plate, interconnecting connection members extending from the end of the girder;
A precast floor plate installation step of installing a precast floor plate so as to rest on the girder;
By casting and curing concrete between the inside of the inserted steel pipe and the base steel pipe and the precast bottom plate, the steel pipe pile, the inserted steel pipe and the coping assembly are integrated, and the precast bottom plate and the girder are integrated. The integration step of integrating;
Construction method of the pier system, characterized in that it comprises.
As a construction method of the pier system,
A pile installation step of driving a steel pipe pile having an internal space so that the lower end of the steel pipe pile is buried in the ground;
An insertion steel pipe installation step of preparing an insertion steel pipe having an engaging member protruding from an outer circumferential surface and installing the insertion steel pipe to the steel pipe pile so that the engaging member spans the upper end of the steel pipe pile;
A reinforcing bar installation step of installing a pre-manufactured reinforcing bar to be seated in the inner space, and installing the upper end of the reinforcing bar to be exposed to the upper part of the steel pipe pile;
A support member extending in a radially inward direction toward the insertion steel pipe and formed in the form of an annular plate covering a part of the insertion steel pipe and spanning the upper end of the steel pipe pile, and concrete as a main material in a form surrounding the edge of the support member It is composed of a coping member that is synthesized and has a through portion through which the reinforcing bars pass through, formed in the center, and a support shear connector protruding from the support member and embedded in the coping member to assist in coupling with the coping member, and pre-manufactured in a factory. A coping assembly installation step of preparing a precast coping assembly and installing the coping assembly to be mounted on the steel pipe pile so that the support member spans the upper end of the steel pipe pile;
A girder mounting step of mounting a girder so that an end of the girder is placed on the upper surface of the coping assembly;
A coupling plate having a plurality of grooves formed on the upper side is coupled to the exposed reinforcing bar protrudingly extended from the end of the girder mounted on the upper surface of the coping assembly, and the exposed reinforcing bar extending from the girder facing the upper surface of the coping assembly. A girder connection step of inserting and installing both ends of a '∩'-shaped parallel connection member into the groove of the coupled coupling plate, interconnecting connection members extending from the end of the girder;
A precast floor plate installation step of installing a precast floor plate so as to rest on the girder;
Concrete is cast in situ and cured between the penetration part of the coping member, the inside of the inserted steel pipe, and the precast bottom plate to integrate the steel pipe pile, the inserted steel pipe, and the coping assembly, and the precast bottom plate And an integration step of integrating the girder;
Construction method of the pier system, characterized in that it comprises.
According to claim 15 or 16,
The coupling plate is formed in a rectangular shape, and a member fixing hole is provided at an edge of the coupling plate;
Both ends of the diagonal connecting member formed in a '∩' shape are inserted into the member fixing hole, and one side of the first girder and the other side of the second girder are connected in a diagonal form, arranged to face each other with respect to the coping assembly, Construction method of the pier system, characterized in that for connecting the other side of the first girder and one side of the second girder in a diagonal form.

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