KR101227680B1 - Connection method for cast-in-place concrete pile and drilled pile - Google Patents

Abstract

On-site casting pile part is formed on the lower side, and the embedded pile part of the ready-made product is formed on the upper side, and in the meantime, in the manufacture or construction of the mixing pile to be installed by installing a connecting means for connecting them integrally and Regarding various connection methods of the buried pile part, the reinforcing material is to be able to use perforated pipes, section steel reinforcement, wood, linear reinforcement, and the like, and the connection of the reinforcing material and the buried pile part to use the shear connector, bolts and the like.

Description

CONNECTION METHOD FOR CAST-IN-PLACE CONCRETE PILE AND DRILLED PILE}

The present invention relates to a method of connecting the field pouring pile unit and the embedded pile unit. More specifically, the site casting pile part is formed on the lower side, and the embedded pile part of the ready-made product is formed on the upper side, and in the process of manufacturing or constructing the mixing pile to be installed by installing connecting means to connect them integrally therebetween. It relates to various connection methods of the file unit and the embedded file unit.

In general, the pile is a structure used to transfer the load to the deep ground of high strength in order to compensate for the insufficient bearing capacity when mounting the structure in the soft ground.

Representative methods of such piles include excavated piles that insert reinforcement reinforcement to excavate the interior and place concrete piles and insert ready-made products (PHC pile or steel pipe pile) by excavating the interior.

At this time, the cast-in-place pile is excavated inside and inserted reinforcing bar as a kind of reinforcement, and it is mainly applied to large-diameter (φ800mm or more) because it forms the pile by pouring concrete.

At this time, if the pile is not a large diameter but below the medium diameter, embedded piles using conventional ready-made products (PHC piles, (round) steel pipe piles) are mainly applied, and development of pile construction methods using efficient bearing capacity was required.

Accordingly, the mixing pile was developed by applying the cast-in-place pile at the lower part and the embedding pile at the upper part, which is easy to secure the workability and quality.

It is essential to develop an efficient connection method between these two piles.

Therefore, the object of the present invention is to solve the conventional problems as described above, for example, in the construction of medium-diameter (φ300 ~ 600mm) pile construction, it is easy to secure the bearing capacity of the cast-in-place pile and ready-made products (PHC pile, (round)) In order to solve the advantages of the buried pile part using steel pipe piles at the same time, and to provide an efficient connection method of the site-placed pile and the embedded pile in the mixed pile developed to compensate for the loss of bearing capacity due to the construction of the buried pile part. It is assumed that the technical problem.

In order to achieve the above object, the present invention provides a file installed in the ground,

On-site installation pile part, characterized in that the lower part is installed in the drilling hole formed by drilling the ground, easy to secure high bearing capacity, the upper side is a built-in embedded pile containing a PHC pile or (circular) steel pipe pile It will provide a mixing pile combined with the embedded pile.

In this case, various reinforcement materials including the reinforcing bar network assembly are inserted into the site casting pile part, thereby constructing the mixing pile by effectively connecting the reinforcement material and the embedded pile part.

In the present invention, but the reinforcement to be inserted into the cast-in-place concrete is formed on the inside, the upper end of the reinforcing material to be formed integrally with the connecting means including a pressure plate, the connecting means is connected to the lower end of the embedded pile It was made.

Also preferably the reinforcement is

Perforated tube formed integrally with the connecting means which is the pressure plate formed in the center through-hole on the upper surface;

A steel reinforcement member including an I-type or c-shaped steel integrally formed with a connecting means that is a pressure plate formed at the center of the through-hole on the upper surface;

Wood reinforcement made of wood (bamboo, etc.) formed integrally with the connecting means which is the pressure plate formed in the center through-hole on the upper surface; or

Linear reinforcement made of reinforcing bars or FRP bars formed integrally with the connecting means, which is a pressure plate formed in the center of the through-holes on the upper surface;

Various reinforcement materials are used, but these reinforcement materials are integrally connected with the embedded pile part which is a ready-made product.

Also preferably, the lower surface of the reinforcing material is further formed integrally with the reinforcing plate or mortar block as necessary to support the weight of the embedded pile until curing of the cast-in-place concrete during construction.

Also preferably, the connection means and the connection pile part of the PHC pile,

A bolt connection which is inserted into a bolt hole formed in the pressure plate, which is a connecting means, and extends from the bottom surface of the buried pile part to a bolt hole formed inwardly so as to be fastened;

A fixing pin connection for inserting a lower catching wedge into a pin hole formed in the pressure plate, which is a connecting means, and extending the upper bolt portion formed integrally with the lower catching wedge to extend into a bolt hole formed inward from a lower surface of the embedded pile part;

A rotatable pin is connected to the rotating pin hole formed in the pressure plate, which is a connecting means, and a ring-shaped clamp portion integrally installed in the pressure plate is formed in a recessed groove shape hole formed in the outer surface of the lower connection plate of the lower end of the embedded pile part. Fixing pin connection to be hooked;

The connecting means formed by connecting the connecting plate formed on the lower end of the shim plate and the buried pile portion by welding with each other; provides a connection method of the field placing pile portion and the buried pile portion to be connected to any one.

In addition, the connection between the connecting means and the buried pile part of the PHC pile

The reinforcing bar assembly is to be installed as a reinforcement of the site casting pile part, but the reinforcing bar network assembly extends to the hollow part of the embedded pile part, and a plurality of transverse shear connectors extending up to the hollow part of the buried pile part are spaced apart in the vertical direction. It is formed to provide a method of connecting the site-pouring pile portion and the embedded pile portion so that the site-pouring concrete is filled in the hollow portion of the embedded pile portion, the shear connection member is installed.

In addition, the connection of the buried pile portion is preferably a connecting means and a circular steel pipe

A plurality of studs are formed on the lower inner surface of the round steel pipe which is the buried pile part, and the connection means of the site pouring pile part is fixed by welding to the inner surface of the lower surface of the circular steel pipe so that the reinforcement of the site pouring pile part extends upward to the stud formation height. To be placed, so that the cast-in-place concrete is filled in the hollow part of the embedded pile part so as to be integrated with each other,

Install a plurality of brackets on the upper surface of the connecting means of the reinforcement, the bracket is fixed by welding along the inner surface around the lower surface of the circular steel pipe of the buried pile portion, and the cast-in-place concrete is filled in the hollow portion of the embedded pile portion to be integrated with each other It provides a method of connecting the on-site pour pile and the embedded pile.

According to the present invention, by applying a site casting pile part to a predetermined height (weathered rock layer or soft rock layer 1 ~ 2m) at the tip of a pile that is conventionally constructed with a medium diameter (φ300 ~ 600mm), the supporting force is maximized, and the upper portion of the field casting pile part is a ready-made product. Since the construction is applied by embedding pile part (PHC file or (round) steel pipe pile), it is possible to improve structural quality and constructability, and install the field pile pile part and embedded pile in the mixed pile developed to be economically applicable. By presenting various connection examples in unifying the parts it is possible to enable the construction of the mixing pile effectively.

1 and 2 is a longitudinal sectional view showing a state in which the construction site and the ground construction showing a mixed pile combining the field-pouring pile portion and the embedded pile portion according to the present invention,
3a, 3b, 3c, 3d and 3e is a front view and a cross-sectional view of the reinforcement according to the present invention,
4a and 4b is a connection configuration of the reinforcement and the embedded pile (PHC file) according to the present invention.

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

<Mixed pile 100 combining the site casting pile unit 110 and the embedded pile unit 130>

For example, as shown in FIG. 1, the mixing pile 100 combining the field pouring pile part 100 and the embedded pile part 130 according to the present invention is provided with a field pouring pile part 110 at a lower side thereof. The buried pile part 130 is formed at an upper side thereof, and a connecting means 160 is integrally connected between an upper end of the field pouring pile part 110 and a lower end of the buried pile part 130.

The site casting pile unit 110 is provided with a reinforcing member 200 including a reinforcing bar assembly 114 is inserted into the hole (Ga) formed by drilling the ground (G), the reinforcing bar assembly 114 is a hole On-site casting concrete 116 to be embedded in (Ga) is provided.

In addition, the embedded pile portion 130 includes a pre-tensioned spun high strength concrete pile (PHC) file or a (round) steel pipe file, the upper end is opened, and through the connecting means 160 and the site placing pile unit 110 and Combined.

And the connecting means 160 is formed of a high rigid acupressure plate 162 made of, for example, an iron ring disk disposed on the top of the site casting pile portion 110, the pressure plate 162 is made of a ring metal ring, A through hole 166 is formed in the center thereof, and a reinforcing bar assembly 114, which is a reinforcing material of the site placing pile part 110, is integrally connected to a lower surface of the through hole 166.

The pressure plate 162, which is such a connecting means, is bolted or welded to the connection plate 136 of the lower end of the embedded pile 130 between the upper end of the field casting pile unit 110 and the lower end of the embedded pile 130. Connected in an integrated manner,

The load by the buried pile unit 130 is smoothly transmitted to the front of the field pouring pile unit 110, through the through-hole 166 formed in the center of the field pouring pile unit 110 ( 116 is filled to a certain height inside the embedded pile portion 130 has a function to connect the field placing pile portion 110 and the embedded pile portion 130 integrally with each other.

And the site casting pile unit 110 is the reinforcing bar assembly 114 is the weight of the embedded pile unit 130 until the strength of the site placing concrete 116 of the site casting pile 110 is cured to express strength The steel reinforcement ring 122 is integrally connected to the lower end of the reinforcing bar assembly 114 by the reinforcing plate 250 so as to be capable of supporting or supporting a predetermined support force in the ground (G).

Such a reinforcing ring 122 is formed integrally to secure the support force and to protect the rebar assembly network 114 until the site casting pile portion 110 is cured against the load due to the weight of the buried pile portion 130 do.

The mixing pile 100 combining such a site casting pile part and an embedded pile part has a medium diameter (φ300 ~ 600 mm), for example, by applying a site casting pile part 110 up to a predetermined height at the tip to maximize the supporting force, and The upper part may be constructed to apply a ready-made product, ie embedded pile portion 130, such as PHC pile or (round) steel pipe pile.

<Reinforcement (200) of the cast site cast unit 110>

The site casting pile part 110 of the mixed pile 100 according to Figure 1 can be seen that the reinforcing bar assembly 114 is formed as a reinforcing material 200, in addition to the various reinforcement 200 can be provided.

That is, according to Figure 2a it can be seen that as the reinforcement 200, the hole pipe 210 is used. That is, the hole 210 is formed of a steel circular tube, a plurality of holes 211 is formed so that the site-casting concrete 116 can be placed in communication with the inside, outside the hole.

Accordingly, it can be seen that the pressure plate 162, which is the connecting means 160 of the present invention, is formed on the upper surface of the perforated pipe 210. Since the hole tube 210 is not manufactured in the form of an assembly, it is not necessary to install the reinforcement ring 122 formed at the bottom of the reinforcement 200 which will be described later.

In addition, according to Figure 2b, as the reinforcement 200, it can be seen that the shaped steel reinforcing material 220, including the H-type, I-type or c-shaped steel and the like. That is, it can be seen that the shape reinforcing material 220 is used as a reinforcing material spaced apart so that, for example, three are arranged on the lower surface of the connecting means 160 by using a steel product consisting of the upper, lower flange and the abdomen (SECTION b-b).

Accordingly, it can be seen that the pressure plate 162, which is also the connecting means 160 of the present invention, is formed on the upper surface of the shaped steel reinforcement 220. Since the section steel reinforcing material 220 is made of three sections of the steel reinforcing material 220 as an assembly form, steel reinforcement ring 122 or mortar as a reinforcing plate 250 at the bottom of the reinforcing material 200 as necessary, such as corrosion prevention or securing of supporting force. Blocks (not shown) will be installed.

In addition, according to Figure 2c as a reinforcement 200, it can be seen that the wood reinforcement 230 made of wood is used. That is, it can be seen that the wood reinforcement 230 is used as a reinforcement, for example, spaced apart so that, for example, six are arranged on the bottom surface of the connecting means 160 by using bamboo (SECTION b-b).

Accordingly, it can be seen that the pressure plate 162, which is the connecting means 160 of the present invention, is formed on the upper surface of the wood reinforcement 230. The wood reinforcement 230 is, for example, six wood reinforcement 230 is manufactured in the form of assembly with each other, so as to secure the support force, such as steel plate reinforcement ring 122 or mortar block (122) at the bottom of the reinforcement 200 as necessary Not shown), and it can be seen that the spiral reinforcement 260 made of wood is formed to surround the outer circumferential surfaces of the bamboo together.

That is, it can be seen that more eco-friendly materials can be used by using wood as a reinforcement material, which can be used since the reinforcement plays a role of reinforcing the site casting pile part rather than securing the bearing capacity of the pile. It can be seen.

In addition, according to Figure 2d it can be seen that as a reinforcement 200, a linear reinforcement 240 made of rebar or FRP bar is used. That is, the linear reinforcing material 240, for example, the reinforcing bar assembly 114 may be used as a representative, it is good to use a linear reinforcing material such as FRP rods, not the reinforcing bar. Again, such a linear reinforcing material can be seen that the six spaced apart so as to be arranged on the lower surface of the connecting means 160 is used as a reinforcement (SECTION b-b).

Accordingly, it can be seen that the pressure plate 162, which is also the connecting means 160 of the present invention, is formed on the upper surface of the linear reinforcing material 240. The linear reinforcing material 240 is, for example, six linear reinforcing materials 240 are manufactured in the form of assembly with each other, as necessary, such as corrosion prevention or securing of bearing capacity, steel reinforcement ring 122 or as a reinforcing plate 250 at the bottom of the reinforcement 200 as necessary. The mortar block (not shown) may be installed, and the spiral reinforcement 260 may be formed to surround the outer circumferential surfaces of the linear reinforcement 240 together.

The various reinforcing members 200 according to FIGS. 2A to 2D described above are first manufactured integrally by the connecting means 160 at the lower end of the embedded pile part 130 and are integrally installed on the ground.

Hereinafter, look at the connection examples of the reinforcement 200 connected integrally with the buried pile portion 130.

<How to connect the pile pile 130 and the reinforcement 200>

First, a PHC pile, which is a ready-made product, in which a hollow part is formed, is used as the embedded pile part 130, and the reinforcement 200 will be described based on the case of the rebar assembly network 114 shown in FIG. 1.

Referring to FIG. 3A, bolt holes 310 and 330 and bolt 320 are used to connect the buried pile part 130 and the reinforcement 200.

That is, a bolt hole 310 is formed in the pressure plate 162, which is the connecting means 160 constituting the reinforcement 200, but the bolt hole 330 of the buried pile portion corresponding to the bolt hole 310 is inward from the lower surface. Since the PHC pile is formed in advance to tension the steel bar, the fastening part constituting the bolt 320 extends through the bolt holes, but is finally fastened so that the buried pile part 130 and the reinforcement 200 can be connected to each other. It can be seen that.

Referring to FIG. 3B, a bolt hole 330, a fixing pin 340, and a pin hole 350 are used to connect the buried pile part 130 and the reinforcement 200.

That is, the pin plate 350 is formed in the pressure plate 162, which is the connecting means 160 constituting the reinforcement 200, the bolt hole 330 of the buried pile portion 130 corresponding to the pin hole 350 Since the pre-formed to tension the internal steel bar PHC pile from the lower surface, so that the fastening portion 341 constituting the fixing pin 340 is extended to pass through the bolt hole 330, the fixing pin ( It can be seen that the engaging wedge portion 342 constituting the 340 is inserted into the pin hole 350 so as to be caught and fixed, so that the final embedded pile portion 130 and the reinforcement 200 can be connected.

According to FIG. 3C, the engaging hole 135 and the clamp 370 are used to connect the buried pile part 130 and the reinforcement 200.

That is, the lower fixing body portion 372 is pin-connected to the rotation pin hole 163 formed in the pressure plate 162, which is the connecting means 160 so as to be rotatable, and integrally connected to the lower fixing body portion 372. The final buried pile portion (clamp connection method) is to be hooked to the hook hole (135) of the groove formed in the outer surface of the connecting plate 136 formed on the lower end of the embedded pile portion It can be seen that the connection between the 130 and the reinforcement 200 is possible.

According to Figure 3d, it can be seen that the welding method is used to connect the buried pile portion 130 and the reinforcement 200.

That is, the connecting plate 160 of the pressure plate 162 and the reinforcing plate 136 formed on the lower end of the buried pile portion 130 up and down with each other by the welding connection method of the final buried pile portion 130 and the reinforcing member 200 You can see that the connection is made possible.

According to FIG. 3E, the shear connecting member 380 is used to connect the buried pile part 130 and the reinforcement 200.

That is, the reinforcing bar 200 assembly to be installed as the reinforcement 200 of the site casting pile unit 110, the reinforcing bar network assembly 114 to extend upward to the hollow portion of the embedded pile 130, the In the lower portion of the embedded pile 130, a plurality of transverse shear connectors 380 extending up to the hollow portion of the embedded pile 130 are spaced apart in the vertical direction, so that the site-casting concrete 116 is embedded in the pile pile 130 It can be seen that the final buried pile portion 130 and the reinforcement 200 are connected to each other by filling the hollow portion of the hollow).

Next, first, the (round) steel pipe pile is used as the embedded pile portion 130, the reinforcement 200 will be described based on the case of the reinforcing bar as shown in FIG.

According to Figure 4a it can be seen that the circular steel pipe is used as the embedded pile portion 130. A plurality of studs 137 are formed on the lower inner surface of the round steel pipe up and down spaced apart, and the connecting means 160 of the cast-in-place pile part 110 is fixed by welding to the lower inner surface of the round steel pipe and the cast-in-place pile part The reinforcement 200 of 110 may be disposed to extend upward to the height of the stud 137, and the cast-in-place concrete 116 may be formed by filling the hollow portion of the embedded pile 130 to be integrated with each other. It can be seen that.

According to FIG. 4b, a trapezoidal bracket 138 is formed to extend upward on the upper surface of the connection means 160 of the site casting pile part 110, and the bracket 138 is a round steel pipe which is an embedded pile portion 130. It can be seen that after being fixed by welding to the inner surface of the lower portion of the cast-in-place concrete 116 is filled in the hollow portion of the embedded pile portion 130 to be integrated with each other.

Although the present invention has been described in detail with reference to specific embodiments thereof with reference to the accompanying drawings, the present invention is not limited to such specific structures. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as set forth in the appended claims. However, it is intended that the present invention covers all such modifications and variations as fall within the true scope of the invention.

100: mixing pile
110: casting site
130: embedded file part
200: reinforcement
210: Merit Hall
220: section steel reinforcement
230: wood reinforcement
240: linear reinforcement
250: reinforcement plate
260: spiral reinforcement

Claims (5)

In the mixed pile combining the site pile pile part and the pile pile part installed by installing the embedded pile part which is a ready-made product including PHC pile or (circular) steel pipe pile in the drilling hole formed by drilling the ground
The site casting pile portion is to be formed inside the reinforcement to be inserted into the site casting concrete, so that the connecting means including acupressure plate is formed integrally on the upper end of the reinforcement, so that the connecting means is connected to the bottom of the embedded pile portion,
Connection of the connection means and the buried pile portion of the PHC pile is a bolt connection is inserted into the bolt hole formed in the pressure plate is a connecting means extending from the lower surface of the embedded pile portion to the bolt hole formed inward to the fastening; A fixing pin connection for inserting a lower locking wedge portion into a pin hole formed in a pressure plate, which is a connecting means, and extending the upper bolt portion formed integrally with the lower locking wedge portion to a bolt hole formed inwardly from a lower surface of an embedded pile portion; The lower fixed body portion is pin-connected to the rotating pin hole formed in the pressure plate, which is a connecting means, and the upper clamp portion of the ring shape integrally with the lower fixed body portion is formed on the outer surface of the connection plate formed at the lower end of the embedded pile portion. Fixing pin connection to be hooked to the hanging hole of the hollow groove shape; Or a welding connection in which the connecting plate formed at the lower end of the bearing plate and the buried pile part, which are the connecting means, is connected to each other by welding; connecting the site placing pile part and the buried pile part to each other. The method of claim 1, wherein the reinforcing material
Perforated tube formed integrally with the connecting means which is the pressure plate formed in the center through-hole on the upper surface;
Steel stiffener comprising an H-type, I-type or c-shaped steel formed integrally with the connecting means which is a pressure plate formed in the center through-hole on the upper surface;
Wood reinforcement made of wood integrally formed with a connecting means which is a pressure plate formed in the center through-hole on the upper surface; or
Linear reinforcement made of a reinforcing bar or FRP bar integrally formed with a connecting means which is a pressure plate formed in the center of the through hole on the upper surface;
The reinforcing material is connected to the field placing pile portion and embedded pile portion, characterized in that the reinforcement plate or mortar block further formed integrally. delete In the mixed pile combining the site pile pile part and the pile pile part installed by installing the embedded pile part which is a ready-made product including PHC pile or (circular) steel pipe pile in the drilling hole formed by drilling the ground
The site casting pile portion is to be formed inside the reinforcement to be inserted into the site casting concrete, so that the connecting means including acupressure plate is formed integrally on the upper end of the reinforcement, so that the connecting means is connected to the bottom of the embedded pile portion,
The connecting means and the PHC pile is connected to the embedded pile pile reinforcement to install the reinforcing bar network assembly, the reinforcing mesh assembly is to extend to the hollow of the embedded pile portion, the lower portion of the embedded pile pile Connection of the site casting pile part and the buried pile part so that the lateral shear connecting member extending to the hollow part is formed to be spaced apart in the vertical direction, so that the site casting concrete is filled in the hollow part of the buried pile part so as to be integrated with each other. Way. delete

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