KR200336229Y1 - Steel pipe pile of closing structure - Google Patents

Abstract

The present invention relates to the expansion of the tip bearing capacity of steel pipe piles and the tip closure structure for preventing buoyancy, and to shorten the length of the steel pipe piles buried in the ground to save the steel pipes used for the steel pipe piles and to prevent the hydraulic pressure generated from the ground layers. It is to provide the end support structure of the steel pipe pile and the end closure structure for preventing buoyancy, which is economically effective to expand and prevent buoyancy, increase the holding force, reduce the requirement of steel pipe pile and shorten the placing air. Conventionally, after pouring steel pipe piles to be placed in the ground as it was constructed using a steel pipe pile head coupler for coupling the head and the concrete foundation of the steel pipe pile.

The present invention installs a closing member consisting of an insertion plate, a connecting pipe, and an outer plate at the tip of the steel pipe pile to be poured, and forms a ventilation hole to increase the tip bearing capacity of the steel pipe pile to be placed in the ground and shorten the depth of the steel pipe pile being driven. By reducing the required amount of steel pipe piles and shortening the driving period, it is to provide a tip closure structure for expanding the bearing capacity of steel pipe piles and preventing buoyancy, which can enhance the economic effect.

Description

Steel pipe pile expansion capacity and steel plate pile of closing structure to prevent buoyancy

The present invention extends the tip bearing capacity of the steel pipe pile and prevents the buoyancy by closing the end of the steel pipe pile through the closing member, and expands the bearing capacity of the tip of the steel pipe pile embedded in the ground to increase the bearing capacity and use it for the steel pipe pile. It saves steel pipes and prevents buoyancy such as water pressure generated in the ground to strengthen the bearing capacity and shorten the pouring air. In providing.

In general, when constructing various construction civil engineering structures such as buildings and bridges, in order to reinforce weak grounds, steel pipe piles are placed on the ground and buried, and the reinforcement structure of tofu (top) is installed on the steel pipe piles to be laid and the foundation concrete structures are constructed. To support concrete civil engineering / building structures.

As an example of the reinforcement structures of the head which is installed on the steel pipe pile to be laid by embedding the steel pipe pile in the ground and buried and supporting the foundation concrete, the coupling hole is placed inside the steel pipe pile, and the coupling hole and the steel pipe pile are bolted together. Fixing by welding and screwing the female screw and the male screw of the reinforcing steel to the upper surface of the coupling, and then placing the concrete to install the coupling in the head of the steel pipe pile driven on the ground, excellent workability and good quality The joint structure of the steel pipe pile head and the concrete foundation, which is secured and is integrated with the concrete being poured by screwing the reinforcing bars and the coupling holes, has been disclosed (Publication Patent Publication No. 10-2000-0030705). In the steel pipe pile head reinforcement structure, it is coupled to the head of the steel pipe pile, Paper is formed, a circular tube having a support step on an inner circumferential surface and a hole formed at a bottom portion thereof, a finishing ring provided between an upper surface of the steel pipe pile and a flange bottom surface of the circular tube, and inserted into the circular tube Is supported on the support step of the circular tube, the radially fixed reinforcing holes are formed, and made of a ring-shaped seat formed with a plurality of holes to complete the reinforcement construction of the steel pipe pile head, so no need for bolts or welding work The steel pipe pile head reinforcement structure (Registration Utility Model Publication No. 20-2001-0247044), which can shorten the working time and secure excellent quality by close contact between the end of the steel pipe pile and the circular tube without voids, is also disclosed. .

And, As an example of reinforcing the tip of the steel pipe pile as a way to increase the bearing capacity by reinforcing the tip of the steel pipe pile placed on the ground floor so that it is firmly supported on the ground when constructing a structure that is subjected to very large loads such as a large building or a bridge. In the steel pipe pile, which is constructed by driving on the ground, the reinforcing pipe having the same outer diameter is welded together to be joined to the tip of the steel pipe pile, and the sealing plate is formed so that the inner circumferential surface of the reinforcing pipe is divided up and down. A plurality of closing members are respectively welded and fixed to the upper and lower portions, and when the steel pipe pile is vertically driven on the ground, the soil is introduced into the reinforcing pipe welded to the distal end thereof to be firmly compacted to form a conical core. A method for reinforcing the tip of a steel pipe pile (Patent Publication No. 10-2001-0107103) is disclosed.

The reinforcing structure used in the method of reinforcing the end portion of the steel pipe pile as described above extends and welds the reinforcing pipe 20 having the same outer diameter as the steel pipe pile 10 to the tip of the steel pipe pile and closes the closing member 22 on the inner circumferential surface of the steel pipe pile. ) Is fixed by welding the sealing plate (21) welded up and down, the configuration of the reinforcement pipe is complicated, the production is cumbersome and the manufacturing cost is high, it is uneconomical, in particular the steel pipe seal is sealed by the sealing plate 21 As the groundwater (underground pneumatics) is not ejected and the steel pipes are subjected to hydraulic pressure, the bearing capacity may be weakened, and the rigidity of the steel pipe piles and reinforcement pipes may be caused by welding the reinforcement pipes to the steel pipe piles. This weakening, when placed in the strata, can not be ruled out.

In order to solve the above problems, the present invention constitutes a closed structure through a closing member consisting of an insertion plate, a connecting pipe, and an outer plate at the tip of the steel pipe pile, thereby shortening the length of the steel pipe pile embedded in the ground Expansion of the bearing capacity of steel pipe piles, which saves the steel pipes used for steel pipe piles and prevents buoyancy such as water pressure generated in the ground, thereby increasing the bearing capacity and excellent economic support such as reducing the pouring air. To provide a tip closure structure for preventing over buoyancy.

In order to realize the object of the present invention, through the closing member consisting of an insertion plate, a connecting pipe, and an outer plate at the tip of the steel pipe pile, it is constructed as a shield structure to shorten the length of the steel pipe pile embedded in the ground It saves the cost of steel pipes, saves the cost of subsidiary materials of steel piles, and shortens the casting time.

In order to realize the other object of the present invention, a vent hole is formed in the closing member interfering with the tip of the steel pipe like a fraud, and the groundwater generated in the stratum is discharged through the steel pipe pile to prevent the problem of bearing force due to buoyancy. It is in the tip closure structure of the steel pipe pile to raise the

1 is a perspective view of an exploded steel pipe pile of the closure member of the present invention,

2 is a cross-sectional view of the steel pipe pile through the closing member of the present invention,

Figure 3 is an enlarged cross-sectional view of the closure member portion of the present invention,

Figure 4 is a cross-sectional view of another embodiment of the closure member portion of the present invention,

5 is a perspective view of examples of the closure member to be designed according to the present invention,

6 is an exemplary view showing a driving state of a conventional steel pipe pile,

7 is an exemplary view showing a driving state of the steel pipe pile of the present invention.

Explanation of symbols on the main parts of the drawing

100; Steel pipe pile 110; Tip

120; Mountain tip 200; Closing member

210; Insertion plate 211,231; Aeration

220; Connector 230; Exterior

The present invention reduces the consumption of the steel pipe required for the steel pipe pile by interposing the closing member 200 at the tip end of the steel pipe pile 100, and expands the bearing capacity of the steel pipe pile driven in the stratum to increase the holding force and shorten the air It is in the tip closure structure of the steel pipe pile.

Hereinafter, the present invention will be described in detail by the accompanying drawings.

1 is a perspective view of a disassembled steel pipe pile of the closure member of the present invention, Figure 2 is a cross-sectional view of the steel pipe pile through the closure member of the present invention, the subject innovation is the tip portion of the steel pipe pile 100 is embedded in the ground layer Through the closing member 200 to expand the bearing capacity of the tip portion 110 of the steel pipe pile 100 and to increase the reaction force of the vertical load to improve the bearing capacity, shortening the depth of the steel pipe pile 100 buried in the ground layer It can reduce raw material cost by reducing the requirement of steel pipe, which is the raw material of pile, and also reduce the construction cost by shortening the pouring air of steel pipe pile being driven.

Figure 3 is an enlarged cross-sectional view of the closing member portion of the present invention, when looking at the intervention process of the closing member 200 in the steel pipe pile 100 of the present invention, the steel pipe pile in the tip portion 110 of the steel pipe pile (100) After inserting the insertion plate 210 having a similar size to the inner diameter of the vent hole 211 into the steel pipe pile 100, and welds the steel pipe pile and the insertion plate (w).

In addition, after the connecting pipe 220 is welded to the lower portion of the insertion plate 210, the ventilation hole 231 is formed at the bottom of the steel pipe pile 100 to be in close contact with the bottom of the connecting pipe, The steel plate pile 100 and the closing member 200 are integrally formed by welding by welding the outer plate 230 having a size similar to an outer diameter of the steel pipe pile to each other by welding (w).

At this time, the insertion plate 210 welded to the lower portion of the connecting pipe 220 is inserted into the inside of the steel pipe pile 100 and then welded the insertion plate 210 and the outer plate 230 to the steel pipe pile (100) It can also be constructed by welding at the bottom.

Reaction force of the vertical load by integrating the closing member 200 consisting of the insertion plate 210, the connecting pipe 220, the outer plate 230 by welding to the front end portion 110 of the steel pipe pile 100 as described above To increase the support capacity.

In addition, the hydraulic pressure generated in the ground layer at the time of driving is discharged through the air vents 211 and 231 of the closing member 200 to solve the problem of the bearing force due to buoyancy.

4 is a cross-sectional view of another embodiment of the closure member in the present invention, when welding the closing member 200 to the tip of the steel pipe pile 100, unlike the tip 110 of the steel pipe pile (100) unlike the above Closing member 200 is involved in the steel pipe pile 100 is similar in size to the inner diameter and the ventilation hole 211 is formed in the lower portion of the insertion plate 210 is welded to the connecting pipe 220 and the connecting pipe The closing member 200 in a manner in which the outer plate 230 having a similar size to the inner diameter of the steel pipe pile 100 and a ventilation hole 211 formed in the lower portion of the 220 is in close contact with the inner surface of the steel pipe pile 100. ) Can be configured integrally.

Figure 5 is a perspective view of the closure member examples of the design change in the present invention, (a) the closing member 200 is described in Figures 1 and 2 of the present invention omitted this and (b) the closing member 200 is In the (a) the closing member of the (200) is to omit only the ventilation hole, (c) the closing member 200 is connected to the insertion plate 210 and the outer plate 230 a plurality of connection configuration The connecting rod 221 and the insertion plate 210 and the outer plate 230 formed in the vent hole 211, 231, respectively, (d) the closing member 200 of the insert plate ( The connection configuration connected to the 210 and the exterior plate 230 may be implemented by connecting the connection configuration with the "+" shaped connector 222 and forming the ventilation holes 211 and 231, respectively, to configure the closing member 200. will be.

Since the configuration in which the closing member 200 of (c) (d), which can be changed as described above, also intervenes in the steel pipe pile 100 is performed as shown in FIGS. 1 and 2, description thereof will be omitted.

6 is an exemplary view showing a driving state of a conventional steel pipe pile, the ground layer is generally composed of a topsoil layer, silt layer, clay layer, weathered soil layer, wind rock layer from approximately the upper layer, when previously hitting the steel pipe pile, 15m It is known that the steel pipe pile 100 having a length of about 3 to be welded and embedded is embedded to have a bearing capacity of the basic concrete structure only when the steel pipe pile of approximately 45 m is embedded.

However, FIG. 7 is an exemplary view showing the driving state of the steel pipe pile of the present invention. In the present invention, the steel pipe pile 100 having about 15m length is welded and embedded by extending the welding of the steel pipe pile of about 15m length under the same conditions. The test results show that the pile can support the foundation concrete structure even if it is buried.

In this way, after driving the steel pipe pile is to intervene the upper reinforcing structure to the upper end portion 120 of the steel pipe pile 100 and to build the base concrete structure.

As described above, the present invention, through the closing member 200 to the steel pipe pile 100, the steel pipe pile 100 has a similar support force with less requirements than before, to save the steel pipe which is the raw material of the steel pipe pile It can reduce the air by shortening the driving time and economical effect of saving material and construction cost.

The present invention incorporates a reinforcing structure at the front end of the steel pipe pile to complement the structural support of the steel pipe pile, save the material of the steel pipe, and shorten the driving time. It is a profitable design to get an economic effect.

Claims (3)

In the steel pipe pile (100) embedded in the strata, Insertion plate 210 is inserted into the inner surface of the front end portion 110 of the steel pipe pile 100 and the vent hole 211 is formed, and A connecting pipe 220 welded to the lower part of the insertion pipe, The end of the support pipe expansion and buoyancy prevention end of the steel pipe pile, characterized in that through the closing member 200 consisting of an outer plate 230 is welded to the lower end of the steel pipe pile 100 is formed with a vent hole 231 Closed structure. The method of claim 1, Insertion plate 210 and the configuration of the closing member 200 involved in the steel pipe pile 100 A tip closure structure for preventing tip buoyancy expansion and buoyancy of the steel pipe pile, characterized in that the connection between the connecting pipe 220 with a plurality of connecting rods (221). The method of claim 1, Insertion plate 210 and the configuration of the closing member 200 involved in the steel pipe pile 100 Expanded end support capacity of the steel pipe pile, characterized in that it consists of a plurality of "+" shaped connector 222 between the connecting pipe 220 and the tip closure structure for preventing buoyancy.