KR100573371B1 - The site other opinion picket spatial-temporal method which applies the meritorious metal tubing - Google Patents

Abstract

The present invention relates to a cast-in-place pile using a perforated steel pipe, the cast-in-place pile that is generally applied as a foundation of a structure that is subjected to a large load does not occur the noise and vibration problems of the existing pile pile, In particular, it is applied to the ground which is difficult to apply a driving pile.

However, the reinforcement of the site-casting piles currently applied has been using reinforcing steel bars assembled in the field, and it is difficult to assemble and manage the reinforcing steel bars.

Therefore, the present invention can compensate for the drawbacks of manpower, time and construction cost by replacing the reinforcement of the cast-in-placement pile with a perforated steel pipe instead of the existing reinforcing network, and to improve the axial compression section force of the pile by Hoop Tension and complete in the factory. It is a way to reduce cost, increase constructability, and facilitate quality control by applying the product to an appropriate length.

Description

The site other opinion picket spatial-temporal method which applies the meritorious metal tubing}

1 is a perspective view showing the present invention perforated steel pipe

Figure 2 is a cross-sectional view showing the invention perforated steel pipe.

Figure 3 is an exemplary state of use of the cast-in-place piles implemented by the present invention.

Explanation of symbols on the main parts of the drawings

1: perforated steel pipe 2: through hole

3: cast-in-place pile 4: concrete

The present invention relates to a cast-in-place pile using a perforated steel pipe, specifically, by using a perforated steel pipe having a through hole as a reinforcing material of the cast-in-place pile, the tension of the steel pipe as an additional resistance force when the vertical force is applied The present invention relates to a method for constructing a cast-in-place pile by applying a perforated steel pipe that increases the axial compression force of the pile.

In general, pile foundations are frequently used as foundations to prevent ground subsidence in civil engineering and building structures, and pile foundations are largely driven piles that are equipped with ready-made piles (steel pipe piles, concrete piles, etc.) on the ground using driving equipment. It is divided into a pile and a site-placement pile in which concrete is excavated after inserting a reinforcing bar into the ground in advance.

Driving piles and cast-in-place piles have advantages and disadvantages, but in recent years, since the civil complaints increase in urban areas due to the increase in load and the depth of construction due to the large size of the structure, and especially the noise and vibration problems, the cast-in-place piles This is the preferred situation.

However, existing cast-in-place piles have low noise and can penetrate to the required depth required in the field, but problems due to securing space and supply of equipment when assembling reinforcing bars applied as reinforcement for compression and shear Due to the complicated process that occurs during transportation and construction, it takes a lot of manpower, time, and construction cost, and it is not only difficult to apply it in reality, but also the most fatal problem that can occur when concrete is placed by applying a hole larger than the maximum aggregate size. In addition to the separation of phosphorus materials and the convenience of construction is not possible, the plan to replace the existing rebar network is being pursued.

In addition, the reinforcement steel is not easy to control the number of through holes applied, and it is not easy to design and construct on-site placing piles. Due to the fact that the defect rate of the material is high due to the manufacture and supply of the product in the field, the axial compression section force of the pile is weak when the vertical force is applied, and it is difficult to assemble and manage the rebar network. Is doing.

Accordingly, an object of the present invention for solving the above problems is to use the perforated steel pipe instead of the reinforcing steel net in the cast-in-place pile to exhibit the ring shape of the steel pipe as an additional resistance force compared to the reinforcing steel bar when the vertical force is applied. Therefore, it is to provide a cast-in-place pile using a perforated steel pipe to increase the axial compression section force of the pile.

Still another object of the present invention is to apply a perforated steel pipe manufactured in a factory so that there are no defects instead of a machined steel net manufactured by hand, and it is possible to construct a unique site-placement pile, and also to enable easy work during construction. It saves the manpower and time required for network assembly.

Therefore, in order to achieve the above object, the present invention has been made to solve the time and cost problems caused by rebar network assembly by applying perforated steel pipe instead of rebar network as structural reinforcement of the site cast pile, Forming a plurality of holes in the ground to prevent the settlement of civil engineering, building structures, the reinforcement is inserted into the hole is a small diameter perforated steel pipe so that the concrete can easily enter, a plurality of holes are formed along the surface, When the concrete is placed in the hole through the through-holes of the perforated steel pipe is tightly filled in / out characterized in that it increases the axial compression cross-sectional force of the pile.

Hereinafter, described in detail with reference to the accompanying drawings.

1 is a perspective view showing a porous steel pipe of the present invention, Figure 2 is a cross-sectional view showing a porous steel pipe of the present invention, Figure 3 is an exemplary view showing a state of use of the hole pouring steel pipe cast site according to the present invention.

The present invention can supplement the shortcomings of manpower, time and construction cost by replacing the reinforcement of the cast-in-place piles generally applied to the foundation of the structure subjected to large loads with perforated steel pipes (1) instead of the existing reinforcing bar, By increasing the axial compression cross-sectional force of the pile 3 by the hoop tension according to the ring shape of the steel pipe 1 and by applying the finished product in the factory to an appropriate length, it is possible to not only reduce the cost, but also increase the workability and quality control. It is a construction method of on-site placing pile (3) applying perforated steel pipe (1).

Therefore, the present invention is to excavate a plurality of holes at a predetermined interval through a perforator in the ground work to prevent the settlement of the building structure at this time through the hole larger than the maximum aggregate value in the steel pipe (1) inserted into the excavated hole When the concrete (4) is poured to form the concrete (4) can easily enter and exit, but should not affect the structural load resistance of the steel.

Into the excavated hole is inserted into the perforated steel pipe (1) as a reinforcing material for compression and shear, the diameter is somewhat smaller than the hole and a plurality of through holes (2) penetrating in the longitudinal direction is formed on the surface.

That is, when the concrete 4 is poured into the perforated steel pipe 3 inserted into the hole, the concrete 4 is tightly packed into the hole through the through-hole 2 while the perforated steel pipe 1 and the concrete 4 Not only can it increase the adhesive force but also prevents the separation of materials that can occur when concrete (4) is placed by applying a through hole (2) larger than the maximum aggregate size. Providing and controlling the thickness of the steel pipe (1) and the number of through holes (2) applied to facilitate the design and construction of the site-casting pile (3).

In addition, since the perforated steel pipe (1) is in the form of a pipe in the longitudinal direction (Hoop Tension) according to the ring shape when the vertical force is applied as an additional drag force compared to the reinforcing bar network can increase the axial compression section force of the pile (3) .

In addition, by adjusting the installation site and length when inserting the perforated steel pipe (1) according to the inside of the hole is a structure that increased the efficiency.

As described above, the present invention is in the form of a pipe and a plurality of through holes are formed on the surface, while increasing the adhesion and concrete and prevent separation of materials, while the vertical force acts as the hoop tension is exerted as an additional resistance force compared to the reinforcing bar pile axial compression It can increase the sectional force and can be widely used in places where current construction is restricted by noise and vibration.

In addition, by replacing the existing rebar network with perforated steel pipe, it is possible to reduce the cost incurred by manpower and time required to assemble the rebar network.

Therefore, the present invention can be applied not only to large-diameter on-site casting piles, which are currently applied to the present invention, but also to medium- and small-diameter on-site casting piles.                     

On the other hand, the present invention exemplified the best embodiment thereof, but is not limited to this, if limited to the appended claims can be carried out without departing from the scope of the invention in view of the modifications of the embodiments described so far Can be.

Claims (2)

In the construction method of the cast-in-place pile, Forming a plurality of holes in the ground to prevent the settlement of civil engineering, building structures, the reinforcement is inserted into the hole is a small diameter perforated steel pipe so that the concrete can easily enter, a plurality of holes are formed along the surface, When the concrete is placed inside the pile is filled in and out through the through-holes of the perforated steel pipe in-site casting pile construction method applying the perforated steel pipe, characterized in that to increase the axial compression cross-sectional force of the pile. delete

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