KR20140124603A

KR20140124603A - Precast block and buttress of retaining wall having largesection capable of regulating height

Info

Publication number: KR20140124603A
Application number: KR1020130042336A
Authority: KR
Inventors: 이응교
Original assignee: 주식회사 인우 (Inwoo.Co.Ltd)
Priority date: 2013-04-17
Filing date: 2013-04-17
Publication date: 2014-10-27

Abstract

The present invention relates to a precast block and a precast buttressed retaining wall with a large cross section, capable of controlling the height thereof by having a structure of which the height can be adjusted according to construction environment and which has a large cross section. The precast buttressed retaining wall can also improve constructability, mobility, and solidity for construction. The precast block of the buttressed retaining wall includes a bottom unit supported by the ground or a foundation; a wall unit formed on the bottom unit in the vertical direction; and a support unit comprising a support plate part formed on the bottom unit and the wall unit in the perpendicular direction and an insertion part including an insertion hole to which the upper end of the pile unit, which protrudes from the upper side of the bottom unit and is driven to the ground or the foundation, is inserted by passing through the bottom unit. Therefore, the precast buttressed retaining wall improves stability and has excellent construction in comparison with an existing buttressed retaining wall.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a pre-cast block and a height-adjustable pre-cast block retaining wall,

The present invention relates to a building field, and more particularly, to a precast block and height adjustment of a retaining wall having a structure capable of improving workability and mobility and having improved rigidity at the time of construction, As far as practicable, a pre-cast part wall retaining wall.

Generally, a retaining wall is installed in the process of constructing roads, railways, river banks, and the like on inclined portions of the ground.

These retaining walls were mainly L-shaped or inverted-T-shaped, and were installed in-situ. Specifically, construction is carried out by installing reinforcing bars and formworks on the site and casting concrete.

However, since the concrete retaining wall construction by such a site casting is performed directly on site in order to form the retaining wall structure, there is a problem that the construction period is prolonged and the construction cost is excessively increased. Since the construction period is long, And the risk of a safety accident is increased.

In recent years, a method of assembling an L-shaped or inverted T-shaped precast concrete retaining wall manufactured in the factory in the field has been proposed in order to solve such a problem.

1 is a perspective view showing such a prior art retaining wall.

The precast retaining wall 1 is composed of a bottom plate portion 2 and a wall plate portion 3 provided in the height direction near one end of the upper surface of the bottom plate portion 2, After the reinforcing bars 5 are exposed to the spaces on both sides of the concrete part 2a, the placement of the placement unit 2b and the like is performed.

Such a pre-cast retaining wall can be back-filled immediately after the retaining wall is installed, and can be restored to the surrounding wrapping. Therefore, the construction speed is fast and the economic efficiency is improved. In addition, There is an advantage in the construction of the city or urgent.

However, such conventional precast concrete retaining walls are limited in the shape and size of the pre-cast concrete because they are subject to restrictions on the height and weight of the road traffic when moving from the factory to the installation site. Particularly, in the case of a retaining wall having a large end face, this problem is exacerbated in the precast retaining wall. Therefore, in the case of subwall retaining walls having a large cross section at present, there is a limitation in the precast method, so that the construction is mostly carried out in a manner to be laid in the field.

On the other hand, the precast retaining wall also lacks adaptability to various terrains of various heights, and the ability to support the soil is significantly lowered as the height is increased.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and it is an object of the present invention to provide a precast block of a retaining wall capable of effectively separating and manufacturing a plurality of units so as to improve mobility to a conveying equipment, The purpose is to provide a retaining wall.

The present invention also relates to a precast block of a retaining wall which can be remarkably shortened in air and which is excellent in workability and robustness even when applied to a terrain having a large earth pressure and a high earth pressure, The purpose is to provide a wall retaining wall.

The precast block of the retaining wall according to the present invention is characterized in that the precast block of the retaining wall comprises a bottom portion supported by a ground or foundation, a wall portion formed in a vertical direction from the bottom portion, and a plate-like support plate formed in a normal direction from the bottom portion and the wall portion And a support portion having an insertion portion protruding upward from the bottom surface portion and having an upper end portion of a pile to be pushed against the ground or a foundation through which the bottom portion is inserted, is provided. Therefore, the rigidity is improved and the workability is superior to that of the conventional sub-wall type retaining wall.

The precast block of the retaining wall according to the present invention may have a columnar shape in which the inserting portion is formed on the plane center side of the bottom surface portion and protrudes to both sides of the support plate portion. Therefore, it is possible to support more firmly at the center side of the support plate portion, and the coupling force with the pile portion is excellent.

In the pre-cast block of the retaining wall according to the present invention, it is preferable that the supporting plate portion and the inserting portion have a linear shape whose upper end face is inclined downwardly on the side face so as to extend at one end of the bottom face portion and the upper end side of the wall face portion. Therefore, the bearing capacity against earth pressure is improved while maximizing spatial utilization.

According to another aspect of the present invention, there is provided a retaining wall using the precast block, the retaining wall including at least one wall portion coupled to an upper end side of a wall portion of the precast block, And a height-adjustable, large-diameter pre-cast wall retaining wall including a pile portion to be formed. Therefore, the height of the retaining wall can be easily adjusted and the workability and reliability can be improved even in the subwall having the large end face.

Further, it is preferable that the height-adjustable large-end pre-cast wall retaining wall of the present invention is a PHC file. Therefore, the durability and the supporting force are improved.

In addition, the height-adjustable high-end precast wall retention wall of the present invention may further include a tension member arranged to penetrate the wall portion and the wall portion in the vertical direction and to provide a tensional force in the height direction. Therefore, the joining between the food items is easy and the construction is simple and robust.

The present invention provides a wall-retaining wall of a large-scale precast retaining wall capable of height-adjustable and a precast block applied thereto. The wall-retaining wall can be formed by assembling predetermined wall portions at various heights according to selection, thereby improving workability and mobility .

Particularly, it is possible to form a retaining wall having a large area, and since the wall portion can be formed of a plurality of walls, the inconvenience of transportation due to the restriction of the height during transportation to a conveying means such as a truck, It has an advantage to be solved.

In addition, since the precast block can be firmly fixed to the ground or foundation by the pile portion, and the precast block has a structure having a high supporting force with respect to the lateral load, the retaining wall is further improved in rigidity, It is possible to minimize the time required for the curing material.

1 is a perspective view showing a retaining wall of the prior art.
FIG. 2 is a perspective view showing a pre-cast block of a height-adjustable large-diameter pre-cast wall retaining wall of the present invention. FIG.
Figure 3 is a side view of the precast block of Figure 2;
Fig. 4 is a front view showing the precast block of Fig. 2; Fig.
FIG. 5 is an exploded perspective view showing a height-adjustable large-diameter pre-cast wall retaining wall of the present invention. FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a precast block of a retaining wall according to the present invention and a wall retaining wall of a large-end precast portion capable of adjusting the height will be described in detail with reference to the accompanying drawings.

Although the precast block applied to the retaining wall is described in the concept of the present invention, it can be applied not only to the retaining wall used for preventing the collapse of the slope and for the formation of the ground in slope, but also to various structures constituting a predetermined wall surface.

In addition, the present invention mainly describes an example of an 'L' -like precast block, but it is not limited thereto. The present invention can be applied to a precast block having an inverted 'T' shape as well as a bottom portion The concept of the present invention can be applied variously as far as it includes a wall portion which is substantially upright.

FIG. 2 is a perspective view showing a precast block applied to a wall-retaining wall of a large-end precast portion capable of height adjustment according to the concept of the present invention, FIG. 3 is a side view of the precast block, and FIG. 4 is a front view.

The pre-cast block of the subwall retention wall according to the concept of the present invention basically comprises a bottom face portion 110 which is supported on a ground or a bottom plate and has a substantially flat plate shape and a lower face portion 110 extending upward from the rear side of the bottom face portion 110 And a support plate 120 for supporting the wall surface 120 and the bottom surface 110 and distributing the lateral pressure of the wall surface 120 to the bottom surface 110, (141).

In the description of the present invention, a direction in which the wall surface portion 120 is formed is referred to as a height direction, a width direction of the bottom surface portion 110 is a lateral direction, and a direction in which the wall surface portion 120 of the bottom surface portion 110 faces Direction is defined as a longitudinal direction.

The wall portion 120 is formed in a plate-like shape as a whole and functions to support the earth or wall surface on one side. The wall portion 120 can support a predetermined wall portion (170 in FIG. 5) while coupling the lower portion as will be described later.

The wall portion 120 is preferably made of concrete including reinforcing bars, but the material is not limited thereto. The wall portion 120 may be pre-cast in the production process together with the bottom portion 110 and the support portion 140, and may be transferred to the construction site to be combined with each other to form a retaining wall.

In the concept of the present invention, a retaining wall of a wall type is basically proposed, in which the wall surface portion 120 secures a certain width in the width direction and has a certain height with respect to the earth, The support structures can be combined and supported together.

The bottom surface portion 300 may extend substantially horizontally below the wall portion 200 so that the bottom surface can be supported with respect to the ground or foundation, and may be substantially plate-shaped.

The wall surface portion 120 and the bottom surface portion 110 may be formed integrally with each other. The wall surface portion 120 and the bottom surface portion 110 have an advantage that the workability can be improved when they are transferred to a construction site in a form of being pre- .

The support portion 140 may be disposed in a manner that connects the wall portion 120 and the support portion 140. As described above, in the retaining wall structure of the sub-wall type, the earth pressure is dispersed in the support portion 140, .

Therefore, for one precast block 100, it is preferable that the support portions 140 are formed substantially on the lateral center side of the wall portion 120 and the support portion 140, and are arranged in the normal direction with respect to each.

As shown in FIG. 3, the upper end of the wall portion 120 and the front end of the bottom portion 110 may be formed to have a predetermined thickness, for example, It is preferable that it is formed in a right triangle shape. According to this concept, the precast block 100 on a side view is substantially triangular in shape.

In the concept of the present invention, since the precast block 100 must have rigidity while supporting the total earth pressure, it is preferable that the precast block 100 is fixed to the ground or the foundation by the pile (160 in FIG. 5) as described later.

Therefore, the precast block 100 can be formed with a predetermined insertion portion 150 through which the file portion can be inserted through the bottom portion 110 and the support portion 140. In the insertion portion 150, An insertion opening 151 communicating with an opening formed in the body 110 may be formed. The shape of the insertion port 151 corresponds to the outer circumferential surface of the pile section to be described later.

The insertion portion 150 may be formed in various shapes depending on the selection. The insertion portion 150 may protrude upward from the center of the bottom portion 110 in consideration of the spatial arrangement efficiency and productivity, but may be integrally formed with the support plate portion 141 And may be made wider on both sides with respect to the upper support plate 141.

This shape can be more specifically described with reference to FIG. When the width of the support plate 141 is equal to the width of the insertion part 150, the support plate 141 and the insertion part 150 may be integrally formed, Of course.

Although the insertion portion 150 is formed as a square column as a whole, it is needless to say that the insertion portion 150 may have a cylindrical shape.

Meanwhile, in order to maximize space utilization and support force, the support portion 140 including the support plate portion 141 and the insertion portion 150 is preferably formed in a linear shape whose upper end portion is inclined downward as a whole

Through the openings arranged in the inserting section 150 and the bottom section 110, the file section is inserted from the lower side, and such a file section is inserted in such a manner as to be pushed against the ground or the foundation so as to fix the position and the shape.

In addition, the slope portion 130 may be further provided between the bottom portion 110 and the wall portion 120 so as to improve the durability against the pressure of the earth pressure in the longitudinal direction.

FIG. 5 is an exploded perspective view showing a state in which a height-adjustable large-diameter pre-cast wall retaining wall is formed using the precast block.

As described above, the wall surface portion 120 is formed in a plate shape having a predetermined length in the height direction, and the height of the wall surface portion 120 is determined by the height of the wall portion 120 170 may be selectively formed depending on the number and size of the electrodes.

In the concept of the present invention, the precast block 100 may further include one or more wall portions 170 coupled to the upper side of the wall portion 120 to form a retaining wall, and the wall portion 170 and the wall portion (120) are coupled in a manner that they are engaged with each other in the field construction.

The wall portion 170 may be formed of two or more walls coupled to each other in a height direction. In the description of the present invention, the wall portion 170 includes a first wall portion 171 and a first wall portion 171 And a second wall portion 172 coupled to an upper side of the second wall portion 172. [ However, the shape, the number, and the fastening manner of the wall portion are not necessarily limited thereto. Also, in one precast block 100, a plurality of walls may be arranged laterally and fastened together.

The wall portion 120 may be formed to extend upward from the rear side end portion of the bottom portion 110 as described above and the wall portion 170 is coupled to the upper end side of the wall portion 120, The tension members 180 may be disposed in such a manner that the tension members 180 pass through the walls mutually to provide a clamping force between the walls 170 and the wall portions 120 and between the wall portions.

Specifically, the wall portion 170 may include a first wall portion 171, a second wall portion 172, and an additional wall portion. The wall portion 170 may be coupled to each other in a height direction, The first wall portion 171 can be engaged with the upper end of the wall portion 120 at the lower end side.

As described above, the tension member 180 may be disposed in a manner such that the tension member 180 is passed through in order to couple the members provided in the vertical direction. The tension member 180 may have a shape of a long steel bar or a long steel wire But is not limited thereto.

The tension member 180 may preferably be made of any one of a PS strand, a PS strand, a PS steel bar, or a continuous fiber reinforcement, provided that it is capable of providing a prestress by a tensile force. have.

In addition, predetermined holes passing through the first wall portion 171, the second wall portion 172, and the wall surface portion 120 may be formed, and the tension members 180 may be disposed through the holes.

In addition, in order to improve the bonding force and improve the accuracy in the construction process, predetermined projecting fastening portions (not shown) are formed at the upper and / or lower ends of the respective members and inserted into the grooves formed at the opposite portions It is also possible that the fastening of the fastening portion is performed.

Accordingly, the tension member 180 is disposed through a hole or a predetermined member that penetrates the wall portion 120 and the wall portion 170 in the up-and-down direction and provides a mutual fastening force by providing a tension force to the overall standing structure You can.

In addition, the pile portion 160 may be disposed in the up-and-down direction of the precast block 100 as described above. The pile portion 160 may include a bottom portion 110 and a part or all of the insertion portion 150 Can be arranged in a manner of penetrating.

The pile portion 160 may be made of various materials depending on the selection, and may be made of a reinforced concrete structure or a metallic pillar type. Preferably, the file portion may be a Pretensioned Spin High-strength Concrete (PHC) file. The PHC file refers to a file which is a high-strength prestress file and which is prestressed in advance to improve the adaptability to bending, and will be described later.

The pile portion is preferably formed in a cylindrical shape for supporting and dispersing loads, but is not limited thereto.

In addition, the pile portion 160 may be made of a variety of materials such as metal or concrete. In the present embodiment, the pile portion must support the entire structure of the retaining wall through the bottom portion 110, Is preferably made of a high structure.

The file unit 160 includes a hollow cylindrical filament body (not shown), a beam inserted in the longitudinal direction of the center of the file body (not shown in the figure) (Not shown) that improves the fastening force with the base 110.

The file body may be made of a reinforced concrete structure, and the beam coupled to the center portion may be made of a metal material, more preferably, an H beam.

A process of constructing a large-end precast wall retaining wall capable of height adjustment by the precast block 100 according to the above embodiment will be described.

The precast block 100 is disposed on a ground or a bottom plate portion where a predetermined gravel should be supported in the horizontal direction and the pile portion 160 is inserted into the ground through the inserting portion 150 to be inserted into the ground, Support can be achieved. However, it is needless to say that the construction may be performed in such a manner that the pile portion 160 is first inserted into the ground or the bottom plate to determine its position, and the precast block 100 is coupled thereto.

At this time, the wall part 170 may be arranged on the upper side with respect to the wall part 120. The number of the wall parts 170 arranged in this way can be varied according to the size and shape of the supported soil part, It should be noted that the height adjustment can be made selectively. Each of the wall portions 170 may have a selected size and shape and may be formed to have a height different from that of the wall portion 170 coupled to the adjacent precast block 100 Of course.

At this time, a tension member 180 is disposed through the wall portion 120 and the wall portion 170, and the tension member 180 provides a longitudinal tension force through the tension device 181, As shown in Fig.

Further, additional precast blocks 100 may be disposed on both sides of the precast block 100, and the precast blocks 100 may be adjacent and fastened in the lateral direction.

The fastening between adjacent precast blocks 100 may be accomplished in situ, as well as transverse tension members (not shown) may be tightened to each other by providing a tensional force between them.

Further, an additional transverse tensional element may be disposed between the wall portions 170 adjacent to each other in such a manner that the transverse tensional elements pass through the interior. In regard to the arrangement and construction of such a tensional element, Can be applied.

On the other hand, in the assembling process of adjoining the precast blocks 100 to each other, a protrusion (not shown) formed on one side of one precast block 100 is inserted into the adjacent precast block 100 (Not shown) may be additionally disposed so as to prevent undesirable inflow and outflow of the fluid material on the connection portion at the adjacent portions. have. The sealing member may be made of a material having a predetermined ductility or a material capable of being cured in a construction process.

The above-described height-adjustable large-end precast casting wall retaining wall and precast block for the same can be formed by assembling the predetermined wall portions at various heights in the field according to selection, thereby improving workability and mobility It is effective.

In addition, since the precast block can be firmly fixed to the ground or foundation by the pile portion, and the precast block has a structure having a high supporting force with respect to the lateral load, the retaining wall is further improved in rigidity, It is possible to minimize the time required for the curing material, and thus the construction period can be remarkably shortened.

In the foregoing, the present invention has been described in detail based on the embodiments and the accompanying drawings. However, the scope of the present invention is not limited by the above embodiments and drawings, and the scope of the present invention will be limited only by the content of the following claims.

100 ... Precast block 110 ... bottom part
120 ... wall portion 130 ... slope portion
140 ... support portion 141 ... support plate portion
150 ... insertion portion 151 ... insertion hole
160 ... file portion 170 ... wall portion
171 ... first wall portion 172 ... second wall portion
180 ... tension member 181 ... tension device

Claims

A bottom part supported against the ground or foundation;
A wall surface portion formed in a vertical direction from the bottom surface portion; And
An insertion portion having an insertion port which is inserted into the bottom surface portion through an upper end of a pile portion protruded upward from the bottom surface portion and pushed against the ground or the foundation, And a supporting portion formed on the bottom wall of the pre-cast block.

The method according to claim 1,
Wherein the inserting portion is formed in a columnar shape that is formed on a plane center side of the bottom surface portion and protrudes to both sides of the support plate portion.

3. The method of claim 2,
And the support plate portion and the insertion portion,
Wherein the upper surface is formed in a linear shape inclined downwardly on the side surface so as to extend at one end of the bottom surface portion and the upper end side of the wall surface portion.

A retaining wall using the precast block according to any one of claims 1 to 3,
At least one wall portion coupled to an upper end side of a wall portion of the precast block; And
And a pile portion that is disposed to penetrate through the bottom portion and the insertion portion of the precast block and is pushed to the ground or foundation.

5. The method of claim 4,
Wherein the file portion is a PHC file.

The method according to claim 6,
Further comprising a tension member arranged to penetrate through the wall portion and the wall portion in a vertical direction and to provide a tension force in the height direction.