KR20200029077A - Pile for earth self-retaining wall using cast in place concrete pile with double I beam - Google Patents

Abstract

The present invention relates to a self-standing type pile for a retaining wall, using an in-site concrete pile including a double I-beam, capable of performing deep excavation even if an embedded length is short in a section with a narrow property line in a downtown area. A horizontal reinforcing member capable of forming resistance by active earth pressure is connected to an in-site concrete pile including the double I-beam. So, even if the embedded length of the in-site concrete pile including the double I-beam is short and the in-site concrete pile including the double I-beam is not deeply embedded, the self-standing type pile for a retaining wall can improve performance of the deep excavation and constructability. Also, a small inclination reinforcing member and a vertical resistance reinforcing pile connecting the horizontal reinforcing member combined with the in-site concrete are formed. So, an additional bearing force corresponding to the active earth pressure is formed. Therefore, even if the embedded length for forming passive earth pressure is short, the self-standing type pile for a retaining wall can perform the construction of a retaining wall. Moreover, the self-standing type pile for a retaining wall using the in-site concrete pile including the double I-beam can perform deep excavation even if the ground is soft.

Description

Pile for earth self-retaining wall using cast in place concrete pile with double I beam}

The present invention relates to a self-supporting earth retaining pile file using a cast-in-place concrete file including a double eye beam capable of breaking into a deep depth even when the root position is short in a narrow section of the downtown boundary line of the downtown area.

The mud construction method is a temporary structure that prevents surrounding soil or groundwater from entering the excavation ground when installing a direct foundation, pile foundation, or underground structure.

Temporary facilities are used during construction and are demolished after completion of construction. Temporarily neglected, which is temporarily used to construct the main body structure. Recently, the construction has become large and complicated, and the cost, construction volume, and the proportion of air occupied by the entire construction. It has become very important because it has grown.

The mud construction method consists of a mud wall supporting the surrounding soil and a support material supporting the mud wall, and can be classified into various types according to the type of the mud wall and the support material.

Typical construction methods for mudguards include the H beam and earth plate construction methods, sheet pile construction methods, main-type mud construction methods, and slurry wall construction methods.

The H-beam and earth plate construction method is a method in which the H-beam and the earth plate are installed at regular intervals, and the earth plate is installed between the H-beams at the same time as excavation, and a mud wall is installed to support the mud wall by installing a strut brace or anchor. Although the air is short, there is a disadvantage in that it is necessary to reinforce grouting and take measures against the heaving phenomenon due to poor water resistance.

The sheet pile method is a method of continuously connecting steel piles to form a retaining wall, which is suitable for soft grounds due to its high degree of water repellency.

The main heating type is a method of forming concrete retaining walls by successively placing concrete piles on-site. It is a low-noise method that reinforces the retaining walls by placing reinforcing bars and H beams inside the piles, providing excellent water resistance and high wall rigidity. Although there are few surrounding settlements, there are disadvantages that the air is relatively long and the construction cost is increased.

On the other hand, in the main heating method, the CIP method of filling the pre-assembled reinforcing bars and coarse aggregates in the excavated ground and injecting mortar, constructs piles in the field, mix the soil in the excavation hole with cement pool, and press H beam or rebar There is a soil cement method.

The slurry wall method is a method of excavating while preventing the collapse of the ground using a stabilizer when excavating the ground, inserting a rebar net therein and pouring concrete to continuously install the concrete retaining wall. This method is suitable for downtown construction considering the safety of construction, pollution problems, and the influence of adjacent buildings.

On the other hand, the above-mentioned mud construction method is forced to apply a limited construction method due to the adjacent structures (roads, buildings, etc.) when excavating downtown, and the typical urban excavation method uses H beam as the main material and types it in the planned location. A method of excavating and descending is generally used.

At this time, as a method of forming a wall between the H beams, as described above, a wooden board (H beam and earth plate construction method) or a field pile pile, that is, a soil cement and a concrete pile construction method, is used as a temporary wall.

In the case of using cast-in-place piles, concrete is poured on top of it to fix the top by integrating the H-beam and the top of the cast-in-place pile, which is called a cap beam.

In the case of the related art, the cap beam was used only to reduce the horizontal line of the H beam and the upper displacement of the cast-in-place concrete pile.

That is, it was not used as a role as a belt supporting the wall during excavation.

Therefore, in order to excavate, it is necessary to separately install a first-stage girdle close to the lower portion, which leads to an uneconomical construction.

In particular, all of the above-described construction methods have a problem in that they cannot be actually constructed by earth pressure in a narrow section of the downtown boundary.

Moreover, in order to cope with the dynamic earth pressure generated in the pile, the ground near the ground must be about 1.5 to 2.5 times more than the exposed pile. In the case of a situation to do, the work was very difficult in a small space.

In order to solve the above problems, various types of mudguard methods have been proposed in the past.

As an example, there is a two-row self-supporting earth retaining method such as Korean Patent Registration No. 10-1692541 (hereinafter referred to as 'patent document 1').

The two-row self-supporting retaining method as in Patent Document 1 can increase the bearing capacity of the pile by connecting the front and rear row piles and then connecting them.

In addition, there is a construction method of installing a raker in a two-row self-supporting pile construction method, such as Korean Patent Registration No. 10-0964995 (hereinafter referred to as 'patent document 2').

The construction method as in Patent Document 2 is made to increase the bearing capacity of the retaining wall by placing the raker in an inclined space during the construction method of Patent Document 1 described above.

(Patent Document 1) KR10-1692541 B1 Two-row self-supporting mud construction heat transfer, post heat pile connection structure

(Patent Document 2) KR10-0964995 Two-row thumb pile earthing method using B1 raker

However, the two-row self-supporting earth retaining method as in Patent Document 1 can be very useful in a narrow section of the land boundary line by connecting the front and back piles after connecting the front and back piles, but the construction efficiency is reduced by double-inserting the pile There was a problem.

In addition, the above-mentioned Patent Document 2 was able to increase the bearing capacity of the retaining wall by additionally installing a raker in the configuration of Patent Document 1, but the above-described raker must be configured to a size sufficient to form a sufficient supporting force, so the worker A. There was a problem in that the work space was very narrow and the workability was deteriorated during the construction of a building wall or foundation.

In order to solve the above problems, the self-supporting soil retaining pile using the on-site concrete pile containing the double eye beam according to the present invention has torsional strength and buckling strength due to a higher cross-section coefficient than the existing H beam even when the ground boundary line is insufficient. A cast-in-place concrete with a double-eye beam that can be deeply dug by using a cast-in-place concrete pile that includes a double-eye beam in which a double-eye beam that does not deform due to soil pressure is excellent because it is excellent The purpose is to provide a self-supporting pile using a pile.

Another object of the present invention is that the horizontal reinforcing member extending in the horizontal direction in which the trench space is formed is coupled to the double eye beam exposed by the first incision surface of the cast-in-place concrete pile including the double eye beam, thereby supporting the main earth pressure. Even when the length of the near-field of the cast-in-place concrete pile including the double-eye beam, which is a non-exposed section for forming the corresponding passive earth pressure is short, sufficient support force to cope with the main earth pressure is formed, so that deep depths can be drilled. In addition, when the horizontal reinforcement member is combined with the cast-in-place concrete pile containing the double eye beam at the location that touches the ground, the supportability of the cast-in-place concrete pile containing the double eye beam can be further improved to improve the workability. There is a purpose.

Another object of the present invention is a combination of a small-sized inclined reinforcement member connecting a horizontal reinforcement member and a cast-in-place concrete file containing a double eye beam, and an on-site cast concrete file including a double eye beam exposed by a trencher. The additional support force corresponding to the main earth pressure generated in the exposed section is formed so that even if the length of the near-entrance section, which is a non-exposed section of the cast-in-place concrete pile with a double eye beam for manual earth pressure formation, is short, it is possible to sufficiently construct the soil. Of course, the purpose is to prevent structural deformation of the cast-in-place concrete file including the double eye beam and to secure a sufficient working space.

Still another object of the present invention is to shorten the length of the near-field, which is a non-exposed section of the cast-in-place concrete pile, which includes a double eye beam for forming passive earth pressure by combining a vertical resistance reinforcement pile, which is inserted into the ground, into a horizontal reinforcement member. The purpose of this is to allow sufficient earthing construction, and also to dig deeply in the case of soft ground.

In the present invention, even when the ground boundary line is insufficient, the field pour includes a double eye beam in which a double eye beam is formed inside the concrete, which is superior in torsional strength and buckling strength due to a higher cross-section coefficient than the existing H beam, so that deformation due to earth pressure does not occur. By using a concrete pile, it is possible to dig deeper.

In addition, the horizontal reinforcing member extending in the horizontal direction in which the trench space is formed is coupled to the double eye beam exposed by the first incision surface of the cast-in-place concrete pile including the double eye beam, thereby generating a manual earth pressure corresponding to the main earth pressure. Even when the near-length length of the cast-in-place concrete pile including the double-eye beam, which is a non-exposed section for forming, is short, sufficient support capacity to cope with the main earth pressure is formed, so that deep-diving can be performed. When the horizontal reinforcement member is coupled to the cast-in-place concrete pile containing the double eye beam at the abutting position, the supportability of the cast-in-place concrete pile containing the double eye beam can be further improved to improve the constructability.

In addition, the driving force generated in the exposed section of the cast-in-place concrete pile containing the double eye beam and the double-eye beam exposed by excavation by combining the small-sized inclined reinforcement member connecting the horizontal reinforcement member The additional support force corresponding to the earth pressure is formed, so that even if the length of the near-entry, which is a non-exposed section of the cast-in-place concrete pile with a double eye beam for manual earth pressure is shortened, it is possible to carry out sufficient earthing construction, as well as a double eye beam. It is possible to prevent structural deformation of the included cast-in-place concrete file and secure a sufficient working space.

In addition, even if the length of the near-entry, which is a non-exposed section of the cast-in-place concrete pile containing a double eye beam for manual earth pressure formation, is shortly formed by combining the vertical resistance reinforcement piles that are inserted into the ground of the digger to the horizontal reinforcing member, sufficient earthing is performed. Of course, the purpose is to make it possible to dig deeply even in the case of soft ground.

1 is a perspective view of a self-supporting soiling pile file using a cast-in-place concrete file including a double eye beam according to the present invention.
Figure 2 is a front view of Figure 2;
3 is a state diagram of the installation of a self-supporting mudguard file using a cast-in-place concrete file containing a double eye beam according to the present invention.

Hereinafter, the configuration of the present invention will be described in more detail with reference to the accompanying drawings.

First, the cast-in-place concrete pile 10 including the double-eye beam is a structure formed by placing and curing the concrete 12 after inserting the double-eye beam 11 into the excavated space excavated in the field.

The first incision of the concrete 12 of the exposed section A1 exposed to the outside after performing some digging as shown in FIGS. A part of the inner double eye beam 11 is exposed by the surface 13.

Here, the double eye beam 11 is a third, fourth plate (11c, 11d) is coupled between the first and second plates (11a, 11b), the cross-sectional shape is made of ㅍ characters and extends in the vertical direction to construct a soil film It is made of a high-strength steel material with a configuration incorporating the ground (G1).

Next, the horizontal reinforcing member 20 is exposed by the first incision surface 13 of the cast-in-place concrete pile 10 that includes a double eye beam that is inserted under the ground G1 during construction of the soil and is subjected to main earth pressure. It is a configuration for forming a supporting force on the cast-in-place concrete pile 10 including a double eye beam by being coupled to the double eye beam 11.

Here, the horizontal reinforcing member 20 extends in the direction in which the trench space O is formed, but the horizontal extension length is a field pour including a depth of the trench and a double eye beam inserted below the trench ground G2. It will depend on the depth of the concrete pile 10.

In particular, the material of the horizontal reinforcement member 20 is preferably made of a steel material.

Meanwhile, in the present invention, the inclined reinforcement member 30 may be further included.

The inclined reinforcing member 30 is configured to be inclined between the cast-in-place concrete pile 10 including a double eye beam extending in the vertical direction and the horizontal reinforcing member 20 extending in the vertical direction to connect them.

More specifically, among the cast-in-place concrete piles 10 that include a double eye beam extending in the vertical direction, the exposed section A1 exposed to the trench ground G2 and not horizontally extending into the trench ground G2 and the horizontal reinforcement member extending in the horizontal direction It is a structure for connecting and supporting (20).

In the present invention, the first incision surface formed in the cast-in-place concrete pile 10 including the double eye beam to couple the above-described inclined reinforcement member 30 to the cast-in-place concrete pile 10 including the double eye beam On the upper side of (13), a second incision surface (14) identical to the first incision surface (13) is formed to form a double eye beam (11) and a horizontal reinforcement member (20) exposed by the second incision surface (14). It is configured to be fixed to the inclined reinforcement member 30.

Here, the inclination angle of the inclined reinforcing member 30 is the depth of intrusion and the depth of incidence of the on-site concrete pile 10 including the double eye beam in the ground (G2) (hereinafter referred to as 'near position') It depends on).

In addition, the present invention may be configured to further include a vertical resistance reinforcement pile (40).

More specifically, it is a configuration for forming a reaction force on the horizontal reinforcing member 20 by coupling to the opposite side of the position where the cast-in-place concrete pile 10 including the double eye beam is coupled.

The vertical resistance reinforcement pile 40 may be coupled to the lower side of the horizontal reinforcement member 20 as shown in FIG. 2, or may be coupled to the side of the horizontal reinforcement member 20 as shown in FIG. 3.

Here, the above-described horizontal reinforcing member 20, the inclined reinforcing member 30 and the vertical resistance reinforcing pile 40 are formed in the form of a double eye beam, but are not limited thereto and may have a cross section of various shapes, and horizontal reinforcing. The combination of the member 20, the inclined reinforcing member 30, and the vertical resistance reinforcement pile 40 may be combined using a fastening means such as welding or a bolt / nut.

Looking at the working effect of the self-supporting mudguard file using a cast-in-place concrete file including a double eye beam according to the present invention having the above configuration.

First, the on-site pouring concrete file 10 including the double eye beam of the self-supporting mudguard file 100 using the on-site pouring concrete file containing the double eye beam according to the present invention is used for the construction of the earth (G1) The perforation and the double eye beam 11, the general configuration formed by pouring and curing of the concrete 12 after the entry of the detailed description will be omitted.

However, in the self-supporting soil retaining file 100 using a cast-in-place concrete file including a double eye beam according to the present invention, the third and fourth plates 11c and 11d are between the first and second plates 11a and 11b. Combined to form a cast-in-place concrete pile 10 including a double eye beam using a double eye beam 11 having a cross-sectional shape.

Accordingly, the double eye beam 11 has a high cross-section coefficient than the conventional H beam even when the ground boundary line is insufficient, and thus has excellent torsional strength and buckling strength, so that it is possible to obtain an effect capable of breaking through to a deep depth.

On the other hand, the on-site pouring concrete file 10 including the double eye beam is exposed to the outside from the ground (G1) to the ground (G2), as shown in Figure 4 (A1), and the ground ( G2) consists of a non-exposure section (A2), which is near to the position where the lower end of the cast-in-place concrete pile 10 with a double eye beam is formed, and in the case of the exposure section (A1), a double eye beam is included. The on-site concrete pile 10 expands due to the volume change of the soil in the backfill, resulting in the main earth pressure (acive earth preussure) based on the digging ground (G2), and the non-exposed section (A2) is passive Passive earth pressure is generated.

In the present invention, by forming a horizontal reinforcing member 20 on the cast-in-place concrete pile 10 including a double eye beam exposed after construction for the trench space O, manual earth pressure formation corresponding to the main earth pressure as described above is formed. Even if the length of the non-exposed section (A2), which is a nearby location, is short, the exposed section (A1) of the cast-in-place concrete pile 10 including a double eye beam can form a supporting force capable of sufficiently responding to the main earth pressure, while the double eye is formed. It is possible to obtain an effect of preventing deformation of the cast-in-place concrete file 10 including the beam.

That is, when the main earth pressure generated as shown in FIG. 4 is generated, the force corresponds only to the passive earth pressure generated in the non-exposed section (A2), which is the near position, but in the normal case, the non-exposed section (which is near the exposed section (A1)) The ratio of A2) should be 1: 1.5 ∼ 2.5, so if the depth of the trench is to be deeply formed, the non-exposed section (A2) should also be relatively deeper. It is difficult to form the phosphorus non-exposed section (A2) deeper, so it is difficult to form the depth of the trench.

Thus, the present invention is a horizontal reinforcing member 20 disposed to abut against the ground (G2) of the trench is extended in a direction capable of resisting the main earth pressure generated in the cast-in-place concrete pile 10 containing a double eye beam When the main earth pressure is generated in the cast-in-place concrete pile 10 including the double eye beam, the reaction force (①) in the horizontal reinforcement member 20 occurs as shown in FIG. 4, resulting in the cast-in-place concrete pile containing the double eye beam. Because it supports the pile 10, it is horizontal even if the length of the passive earth pressure, that is, the length of the non-exposure section A2, which is near to the exposure section (A1) of the cast-in-place concrete pile 10 including the double eye beam, is short. By the support force of the reinforcing member 20, it is possible to obtain an effect that enables the construction of a trench to a deep depth.

In particular, by the action of the horizontal reinforcing member 20, even if there is no existing raker or earth anchor, a sufficient supporting force is formed, so that it is possible to obtain an effect that enables construction to be dug to a deep depth.

In addition, the above-mentioned support force acts to prevent deformation of the cast-in-place concrete pile 10 including the double eye beam in the main earth pressure.

On the other hand, in the present invention, the inclined reinforcement member 30 for connecting the double eye beam 10 and the horizontal reinforcement member 20 is further included.

The inclined reinforcing member 30 has an additional supporting force in addition to the force supporting the cast-in-place concrete pile 10 including a double eye beam by the horizontal reinforcing member 20, and further, horizontal reinforcing as shown in FIG. Since the reaction force (②) at a position different from the member 20 supports the cast-in-place concrete pile 10 including the double eye beam, it is possible to prevent structural deformation of the double eye beam 10 due to the supporting force as well as the dynamic earth pressure. You can also get the effect you can.

In particular, the above-described inclined reinforcing member 30 is made of a structure that connects the on-site cast concrete pile 10 and the horizontal reinforcing member 20 including a double eye beam, so that it is sufficient even if it is formed smaller than the size of a conventional raker. Since it forms a supporting force, it is possible to sufficiently secure a working space when constructing a building wall or a floor foundation.

In addition, in the present invention, the vertical resistance reinforcement pile 40 may be further coupled to the lower side of the opposite side of the horizontal reinforcement member 20 combined with the double eye beam 10.

The vertical resistance reinforcement pile 40 is a configuration that is inserted in the downward direction from the trench ground (G2), as shown in Figure 4, the reaction force (③) in the vertical resistance reinforcement pile 40 supports the horizontal reinforcement member 20 Because of this, it is possible to obtain the effect of the double pile, and even when the ground is soft, it increases the supporting force, so that it is possible to perform digging at a deep depth when constructing the soil.

In particular, the above-described vertical resistance reinforcement pile 40 can be coupled to the lower side or side of the horizontal reinforcement member 20, when coupled to the lower side can obtain a greater reaction force, when coupled to the side of the construction Convenience can be improved.

Although the above-described embodiment is described with respect to the most preferred example of the present invention, it is not limited to the above-described embodiment, and various modifications are possible without departing from the technical spirit of the present invention. It is obvious to the engineers.

G1: Ground G2: Digging Ground O: Digging Space
10: Cast-in-place concrete file with double eye beam
11: double eye beam
11a: 1st edition 11b: 2nd edition 11c: 3rd edition 11d: 4th edition
12: concrete 13: first cut surface 14: second cut surface
A1: Exposure section A2: Non-exposure section
20: horizontal reinforcement member
30: Inclined reinforcement member
40: vertical resistance reinforcement pile
100: Self-supporting earthing file using cast-in-place concrete file with double eye beam

Claims (6)

The third and fourth plates 11c and 11d are coupled between the first and second plates 11a and 11b facing each other to form an elongated cross-section, but to the outside of the double eye beam 11 extending vertically. The site where the concrete 12 is poured and cured, but includes a double eye beam including a first incision surface 13 in which a portion of the outside concrete 11 is cut so that a part of the inside double eye beam 11 is exposed Pour concrete pile 10;
A cast-in-place concrete pile (10) including a double-eye beam is extended in a horizontal direction in which the trench space (O) is formed to support the resistance due to the main earth pressure to support the cast-in-place concrete pile (10) with a double eye beam. ) The horizontal reinforcement member 20 coupled to the double eye beam 11 exposed by the first incision surface 13 of the independence using the cast-in-place concrete file including the double eye beam characterized in that it comprises a Expression mudguard files.
The method according to claim 1, wherein the first cutting surface (13) of the cast-in-place concrete pile (10) including the double eye beam is positioned at a position where the lower surface of the horizontal reinforcement member (20) can contact the burrow surface (G2). A self-supporting mudguard file using a cast-in-place concrete file that includes a double eye beam that is characterized by being formed on the surface.
According to claim 1, The second incision surface so that a part of the inner double eye beam (11) is exposed to the upper side of the first incision surface (13) formed in the cast-in-place concrete pile (10) containing the double eye beam ( 14),
The inclined reinforcing member 30 further inclinedly coupled to the horizontal reinforcing member 20 and the double eye beam 11 exposed by the second cutting surface 14 of the cast-in-place concrete pile 10 including the double eye beam is further provided. A self-supporting mudguard file using a cast-in-place concrete file that includes a double eye beam, which is characterized by including construction.
The method of claim 1, wherein the horizontal reinforcing member (20) is a self-supporting method using a cast-in-place concrete file including a double eye beam, characterized in that a vertical resistance reinforcement pile (40) inserted into the ground (G2) is dug. Earthing file.
The method of claim 4, wherein the vertical resistance reinforcement pile (40) coupled to the horizontal reinforcement member (20) is a cast-in-place concrete pile including a double eye beam characterized in that it is coupled to the lower surface of the horizontal reinforcement member (20). Self-supporting mudguard file.
According to claim 4, The vertical resistance reinforcement pile (40) coupled to the horizontal reinforcement member (20) is a cast-in-place concrete pile including a double eye beam characterized in that it is coupled to the side of the horizontal reinforcement member (20). Self-supporting mudguard file.

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