KR20200029075A - Pile for Earth self-retaining wall using double I beam - Google Patents

Abstract

The present invention relates to a self-standing type pile for a retaining wall using a double I-beam, capable of performing deep excavation in a section with a narrow property line in a downtown area even if an embedded length is short. The self-standing type pile for a retaining wall using a double I-beam comprises: the double I-beam formed in a ㅍ-shaped cross section and vertically extended; and a horizontal reinforcing member extended in the horizontal direction in order for resistance to be generated by positive earth pressure and connected to the double I-beam. The self-standing type pile for a retaining wall using the double I-beam can perform the deep excavation when there is a lack of the property line. The horizontal reinforcing member capable of forming the resistance by the positive earth pressure is connected to an in-site concrete pile. So, the self-standing type pile for a retaining wall using the double I-beam can improve constructability and performance of the deep excavation even if the in-site concrete pile is not deeply embedded and even if the embedded length of the in-site concrete pile is short. 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 positive earth pressure is formed. Therefore, even if the embedded length for forming passive earth pressure is short, the self-standing type pile for a reinforcing wall can perform the construction of a retaining wall. Moreover, the self-standing type pile for a reinforcing wall using the double I-beam can perform deep excavation even when the ground is soft.

Description

Pile for Earth self-retaining wall using double I beam}

The present invention relates to a self-supporting mudguard file using a double eye beam capable of breaking into a deep depth even when the root boundary is short in a narrow section of the downtown boundary 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.

The self-supporting mudguard file using the double eye beam according to the present invention for solving the above problems is superior in 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, so deformation due to earth pressure An object of the present invention is to provide a self-supporting mudguard file using a double eye beam that can be deeply dug by using a double eye beam that does not occur.

Another object of the present invention is a non-exposure section for forming a passive earth pressure corresponding to the main earth pressure because a horizontal reinforcement member extending in a horizontal direction in which a trench space is formed when a trowel is constructed using a double eye beam is coupled to the double eye beam Even if the length of the near end of the double eye beam is shortened, sufficient support force to cope with the main earth pressure is formed, so that even when the double eye beam is not brought into a deeper depth, deeper depth digging can be performed. When the horizontal reinforcement member is coupled to the double eye beam at the abutting position, the purpose is to further improve the supportability of the double eye beam to improve the constructability.

Another object of the present invention is to combine a small sized inclined reinforcement member connecting a double eye beam and a horizontal reinforcing member to form an additional support force corresponding to the main earth pressure generated in the exposed section of the double eye beam exposed by trenching. By doing so, even if the length of the near entrance, which is a non-exposed section of the double eye beam for forming the passive earth pressure, is shortly formed, it is possible to sufficiently carry out the construction of the soil, as well as to prevent structural deformation of the double eye beam and ensure a sufficient working space. There is this.

Still another object of the present invention is that the vertical resistance reinforcement pile that is inserted into the ground of the trench can be combined with a horizontal reinforcement member to perform sufficient earthing construction even if the length of the near entrance, which is a non-exposed section of the double eye beam for forming passive earth pressure, is short. The purpose of this is to make it possible to dig deeply even in the case of soft ground.

According to the present invention, even when the ground boundary line is insufficient, it is possible to carry out deep drilling by using a double eye beam that is superior in torsional strength and buckling strength due to a higher cross-section coefficient than the existing H beam and does not cause deformation due to earth pressure.

In addition, the horizontal reinforcement member that extends in the horizontal direction in which a trench space is formed during the construction of a trowel using a double eye beam is coupled to the double eye beam, so that the double eye beam is a non-exposed section for forming a passive earth pressure corresponding to the main earth pressure. Even if the entry length is shortened, sufficient support force to cope with the main earth pressure is formed, so that even if the double eye beam is not inserted at a deeper depth, deeper digging can be performed. Particularly, the double eye at the position touching the ground of the trench. When the horizontal reinforcing member is coupled to the beam, it is possible to further improve the supportability of the double eye beam, thereby improving the constructability.

In addition, by combining a small-sized inclined reinforcing member that connects the double eye beam and the horizontal reinforcing member, an additional supporting force corresponding to the main earth pressure generated in the exposed section of the double eye beam exposed by the trench is formed to form a manual earth pressure. Even if the length of the near entrance, which is a non-exposed section of the double eye beam, is shortly formed, it is possible to sufficiently carry out the construction of the soil, as well as to prevent structural deformation of the double eye beam and sufficiently secure a work space.

In addition, even if the length of the near entrance, which is the non-exposed section of the double eye beam for passive earth pressure formation, is shortened by combining the vertical resistance reinforcement pile that is inserted into the ground of the trench to the horizontal reinforcement member, it is possible to sufficiently construct the soil. It is a useful invention that can dig deeply even in the case of ground.

1 is a perspective view of a self-supporting mudguard file using a double eye beam according to the present invention.
Figure 2 is a front view of Figure 2;
Figure 3 is a state diagram of the installation of a self-supporting mudguard file using 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, in the double eye beam 10, as shown in FIGS. 1 to 2, the third and fourth plates 13 and 14 are coupled between the first and second plates 11 and 12, so that the cross-sectional shape is made of ㅍ. It extends in the vertical direction and is constructed to be inserted into the ground (G1) during the construction of the earthen membrane.

The double eye beam 10 may be made of a high strength steel material.

Next, the horizontal reinforcing member 20 is coupled to the first plate 11 of the double eye beam 10, which is inserted under the ground G1 during the construction of the earthenware and is subjected to the main earth pressure, thereby supporting the double eye beam 10. It is a structure for forming.

Here, the horizontal reinforcing member 20 is horizontally extended in the direction of the trench space (O), but the horizontal extension length is the depth of the trench and the depth of the trench (G2) near the bottom of the double eye beam (10) It depends on.

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 double eye beam 10 extending in the vertical direction and the horizontal reinforcing member 20 extending in the horizontal direction to connect them.

More specifically, among the double eye beams 10 extending in the vertical direction, the exposed section A1 exposed without being inserted into the trench ground G2 and the horizontal reinforcing member 20 extending in the horizontal direction are supported. It is a configuration to do.

Here, the inclination angle of the inclined reinforcing member 30 is varied depending on the depth of excavation and the depth of intrusion of the double eye beam 10 in the ground (2). .

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

More specifically, the double eye beam 10 is configured to form a reaction force on the horizontal reinforcement member 20 by being coupled to the opposite side of the combined position.

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 operational effect of the self-supporting pile using a double eye beam according to the present invention made of the above configuration.

First of all, the double eye beam 10 of the self-supporting mudguard file 100 using the double eye beam according to the present invention is a configuration that approaches the ground (G1) for mudguard construction, which is related to general mud construction. Is omitted.

However, in the case of the self-supporting pile screen 100 using the double eye beam according to the present invention, the third and fourth plates 13 and 14 are coupled between the first and second plates 11 and 12 to form a cross section. It will use the double eye beam 10 made of.

Therefore, even when the ground boundary line is insufficient, since the cross section coefficient is higher than the existing H beam, it has excellent torsional strength and buckling strength, so that deformation due to earth pressure does not occur, and it is possible to enter deeper depths. You can get the possible effect.

Meanwhile, the double eye beam 10 enters the ground G1 at the time of construction of the soil, and then performs a digging operation to a planned depth.

Here, the double eye beam 10 after the above-described trenching is exposed to the outside from the ground (G1) to the ground (G2), as shown in Figure 4 (A1), and the ground (G2) At the lower end of the double eye beam 10, it is made of a non-exposed section (A2), which is near to the position where the lower end is formed, and in the case of the exposure section (A1), the double eye beam (10) changes the volume of soil in the backfill. Due to the expansion, the main earth pressure (Acive earth preussure) is generated based on the ground (G2) of the trench, and the passive earth pressure (A2) is generated in the non-exposed section (A2).

In the present invention, by combining the horizontal reinforcing member 20 to the double eye beam 10 exposed after construction for the trench space O, the non-exposed section, which is a near point for forming passive earth pressure corresponding to the main earth pressure as described above ( Even if the length of A2) is shortened, the exposure section A1 of the double eye beam 10 can form a supporting force capable of sufficiently coping with the main earth pressure while obtaining the effect of preventing the deformation of the double eye beam 10 It becomes possible.

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.

Accordingly, the present invention is a horizontal reinforcing member 20 disposed to contact the ground (G2) of the trench is combined in an extended form in a direction capable of resisting the main earth pressure generated from the double eye beam 10 double eye beam When the main earth pressure occurs in (10), the reaction force (①) occurs in the horizontal reinforcement member 20 as shown in FIG. 3 to support the double eye beam 10, so the size of the manual earth pressure, that is, the double eye beam 10 Even if the length of the non-exposed section A2 near the exposure section A1 is short, the effect of enabling the construction of a trench to a deep depth can be obtained by the support force of the horizontal reinforcement member 20.

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 the double eye beam 10 from being deformed by 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 double eye beam 10 by the horizontal reinforcing member 20, and moreover, a position different from the horizontal reinforcing member 20 as shown in FIG. Since the reaction force (②) in supports the double eye beam 10, it is possible to obtain an effect capable of preventing structural deformation of the double eye beam 10 due to the main pressure as well as the supporting force.

In particular, the inclined reinforcing member 30 as described above is composed of a structure that connects the double eye beam 10 and the horizontal reinforcing member 20, so that even if it is formed smaller than the size of a conventional raker, it forms a sufficient additional supporting force, thereby building walls. B. When constructing the foundation for the floor, it is possible to secure enough work space.

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: double eye beam
11 1st edition 12 2nd edition 13 3rd edition 14 4th edition
A1: Exposure section A2: Non-exposure section
20: horizontal reinforcement member
30: Inclined reinforcement member
40: vertical resistance reinforcement pile
100: self-supporting pile file using double eye beam

Claims (6)

A third, fourth plate (13, 14) is coupled between the first and second plates (11, 12) facing each other, a double eye beam (10) made of a cross section of a ㅍ shape but extending in a vertical direction;
It includes a horizontal reinforcement member (20) extending in the horizontal direction in which the trench space (O) is formed to be coupled to the double eye beam (10) so as to generate a resistance force due to the main earth pressure; Used self-supporting mudguard file.
The method according to claim 1, wherein the horizontal reinforcing member (20) coupled to the double eye beam (10) is placed at a position where the double eye beam (10) comes into contact with the breaking ground (G2) when the ground (G1) enters and breaks the ground (G1). A file for self-supporting earthenware using a double eye beam that is characterized by being.
According to claim 1, The double eye beam 10 and the horizontal reinforcing member 20, the inclined reinforcing member 30 that is inclinedly coupled to further comprises a self-supporting pile file using a double eye beam characterized in that it is configured.
According to claim 1, The horizontal reinforcing member 20 is a self-supporting pile using a double eye beam characterized in that the vertical resistance reinforcement pile (40), which is inserted into the ground (G2) of the trench is further coupled.
The method of claim 4, wherein the vertical resistance reinforcement pile (40) coupled to the horizontal reinforcement member (20) is a self-supporting pile using a double eye beam characterized in that it is coupled to the lower surface of the horizontal reinforcement member (20). .
The method of claim 4, wherein the vertical resistance reinforcement pile (40) coupled to the horizontal reinforcement member (20) is a self-supporting pile using a double eye beam characterized in that it is coupled to the side of the horizontal reinforcement member (20). .

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