KR102685263B1 - Vibration-proof structure using underground continuous wall - Google Patents

Abstract

This technology relates to a vibration-proof structure using an underground continuous wall. The vibration isolation structure using an underground continuous wall of the present technology is an underground vibration isolation structure installed between a vibration source and a building to reduce vibration propagated from the vibration source to the building, and is installed to have a predetermined depth from the ground surface, and includes a plurality of It includes a continuous wall in which pile members are connected to each other.

Description

Vibration-proof structure using underground continuous wall {VIBRATION-PROOF STRUCTURE USING UNDERGROUND CONTINUOUS WALL}

The present invention relates to a vibration-proof structure using an underground continuous wall, and more specifically, to a vibration-proof structure using a continuously constructed underground wall.

An underground vibration isolation wall refers to an underground wall constructed between the vibration source and the vibration isolation object for the purpose of preventing the propagation of ground vibration. It can be applied to protect surrounding buildings from vibration sources such as roads and railways, or to reduce vibration noise pollution in residential areas near vibration sources. In addition, it can also be applied to protect surrounding buildings and people from vibration sources at construction sites where dynamic compaction methods, etc. are applied.

As a related prior art, Republic of Korea Patent No. 10-0558250 (Invention name: Vibration isolation wall for reducing ground motion) shows a vibration isolation wall installed in the ground at an angle with respect to a plane perpendicular to the direction in which vibration progresses from the vibration source to the building. Ground vibration is blocked by filling the inside of the vibration isolation wall with hard fill material such as concrete blocks that have a different impedance from the ground. In addition, Republic of Korea Patent Publication No. 10-2013-0117370 (Invention name: Underground dustproof wall installation method and underground dustproof wall) also proposes a method of constructing a dustproof wall by injecting a dustproof liquid containing a highly elastic urethane material into the inside of the dustproof wall.

However, technologies such as those in the prior patents above require an increase in the amount of filler as the damage point becomes wider, which greatly reduces constructability and makes it inevitable to spend a lot of money and time not only when constructing the dustproof wall but also when removing the dustproof wall in the future. do.

In order to solve this problem, the inside of the trench can be maintained as an empty space without any filler, and vibration waves transmitted from the vibration source can be extinguished through this empty space. However, such empty space can be easily damaged by earth pressure or groundwater pressure transmitted from both sides. It has the problem of collapsing and reducing the dustproof effect.

The inventor of the present invention completed the present invention after a long period of research and trial and error in order to solve these problems.

An embodiment of the present invention provides a vibration-proof structure using an underground continuous wall with excellent dust-proof efficiency and constructability.

Meanwhile, other unspecified purposes of the present invention will be additionally considered within the scope that can be easily inferred from the following detailed description and its effects.

The vibration isolation structure using an underground continuous wall according to an embodiment of the present invention is an underground vibration isolation structure installed between a vibration source and a building to reduce vibration propagated from the vibration source to the building, and is installed to have a predetermined depth from the ground surface. It may include a continuous wall in which a plurality of pile members are connected to each other.

The continuous wall may have multiple inclined sections in a continuous zigzag structure.

Each of the plurality of pile members may be integrally molded from a single sheet material.

The plurality of pile members each include a first sheet part and a second sheet part placed on different planes through a central bending part; and first connection parts of the first sheet part and second connection parts of the second sheet part provided at both ends of the body part.

The plurality of pile members include a first pile member, a second pile member, and a third pile member, and the second connection portion of the first pile member is connected to the first connection portion of the second pile member to form the first pile member. A first inclined section is formed by a second sheet portion of the member and a first sheet portion of the second pile member, and the second connection portion of the second pile member is connected to the first connection portion of the third pile member. to form a second inclined section defined by the second sheet portion of the second pile member and the first seat portion of the third pile member, and the first inclined section and the second inclined section have a continuous zigzag structure. You can have

The first inclined section and the second inclined section may intersect at a bending portion of the second pile member.

It further includes a hollow trench formed at a predetermined depth from the ground surface, wherein the continuous wall may be installed through the bottom of the hollow trench.

It may further include a cover that covers the upper opening of the hollow trench, and the uppermost end of the continuous wall may be disposed to contact the cover.

This technology can provide a vibration-proof structure using an underground continuous wall with excellent dust-proof efficiency and constructability.

Figure 1 is a perspective view schematically showing the installation of a vibration isolation structure using an underground continuous wall according to an embodiment of the present invention.
Figure 2 is a cross-sectional view schematically showing the installation of a vibration isolation structure using an underground continuous wall according to an embodiment of the present invention.
Figure 3 is a plan view schematically showing the installation of a vibration isolation structure using an underground continuous wall according to an embodiment of the present invention.
Figure 4 shows a detailed view of a portion of a continuous wall according to an embodiment of the invention.
Figure 5 is a perspective view schematically showing the installation of a vibration isolation structure using an underground continuous wall according to another embodiment of the present invention.
Figure 6 is a cross-sectional view schematically showing the installation of a vibration isolation structure using an underground continuous wall according to another embodiment of the present invention.
Figure 7 is a cross-sectional view schematically showing the installation of a vibration isolation structure using an underground continuous wall according to another embodiment of the present invention.
The attached drawings are intended as reference for understanding the technical idea of the present invention, and are not intended to limit the scope of the present invention.

Below, the most preferred embodiments of the present invention are described. In the drawings, thickness and spacing are expressed for convenience of explanation, and may be exaggerated compared to the actual physical thickness. In describing the present invention, known configurations unrelated to the gist of the present invention may be omitted. When adding reference numbers to components in each drawing, it should be noted that identical components are given the same number as much as possible even if they are shown in different drawings.

Figure 1 is a perspective view schematically showing the installation of a vibration isolation structure using an underground continuous wall according to an embodiment of the present invention.

Figure 2 is a cross-sectional view schematically showing the installation of a vibration isolation structure using an underground continuous wall according to an embodiment of the present invention.

And, Figure 3 is a plan view schematically showing the installation of a vibration isolation structure using an underground continuous wall according to an embodiment of the present invention.

As shown in Figures 1 to 3, the vibration isolation structure 100 using an underground continuous wall according to an embodiment of the present invention (hereinafter, for convenience of description, simply referred to as 'underground vibration isolation structure') is a continuous wall ( 110).

The continuous wall 110 is installed between the vibration source (VS) and the building (BI).

Continuous walls can be installed passively adjacent to a building. It can be installed in a positive manner adjacent to the vibration source, but the passive method is more advantageous for underground vibration isolation structures.

The continuous wall 110 is installed to have a predetermined depth D1 from the ground surface G.

The installation depth of the continuous wall is indicated in direction III in the drawing. For example, it can be installed at a depth of 10 m.

The continuous wall 110 according to an embodiment of the present invention has a structure in which a plurality of pile members are connected to each other. That is, a continuous wall can be installed by successively driving a plurality of pile members one by one.

The pile member may be a pile structure such as a steel sheet pile. The pile member may be a pile structure that is integrally molded from a single sheet material. This ensures the rigidity required for the pile structure. For example, it can be obtained by slitting a hot-rolled coil to an appropriate size and then cold forming it through a stamping process.

Pile members can generally have a width of 20 to 40 cm, and are installed continuously in a zigzag manner, so the width of the installed continuous wall can be 40 to 80 cm. The width of the continuous wall is indicated in direction I in the drawing.

The length at which the continuous wall is installed (indicated in direction II in the drawing) can be determined by considering the scale of the object to be isolated from vibration and the scale of the vibration source.

According to an embodiment of the present invention, vibration waves generated from the vibration source VS can be efficiently reduced. It is possible to provide an underground vibration-proof structure with excellent vibration-proof efficiency by very effectively changing the direction (A) of vibration waves through a continuous wall having multiple inclined sections of a continuous zigzag structure according to an embodiment of the present invention.

Hereinafter, the structure of the continuous wall according to an embodiment of the present invention will be examined in more detail with reference to FIG. 4.

Figure 4 shows a detailed view of a portion of a continuous wall according to an embodiment of the invention.

Referring to FIG. 4, the continuous wall 110 includes a plurality of pile members 111, 112, 113, 114, and 115. Multiple pile members are connected to each other. In the drawing, for convenience of explanation, only five pile members are shown, but the present invention is not limited to the number, and a larger number of pile members can be connected to each other in consideration of the scale of vibration isolation.

Each pile member may have the same shape. Using pile members of the same shape is advantageous for transportation and loading, and the arrangement is intuitive during installation, increasing the convenience of work.

Each pile member (111, 112, 113, 114, 115) has connection portions (Ca, Cb) on both sides. The connection site (Ca) and connection site (Cb) have complementary structures that can be inserted when engaged with each other. For example, the connecting portion (Cb) of the first installed pile member 111 and then the connecting portion (Ca) of the pile member 112 are inserted and driven in an engaged state. When the driving of the pile member 112 is completed, the connecting portion Ca of the pile member 113 is inserted into a state of engagement with the connecting portion Cb of the previous pile member 112 and driven. Subsequently, other pile members can be driven in the same manner to finally install the continuous wall described above in FIGS. 1 to 3.

For convenience of explanation, the present invention will be described with a focus on an embodiment in which pile members with the same shape of the left and right connecting portions as shown in the drawings are applied. However, the present invention is not limited to this, and pile members of various shapes can be applied. there is. For example, pile members with different connection parts on both sides (such as male and female coupling structures) may be applied. In both cases, the overall view is the same in that a continuous wall with a zigzag structure is formed.

Referring to FIGS. 3 and 4 described above together, the continuous wall 110 according to an embodiment of the present invention has multiple inclined sections in a continuous zigzag structure. Through this continuous zigzag structure, vibration waves generated from the vibration source can be reduced very efficiently.

Specifically, a plurality of consecutive inclined sections (S1, S2, S3, S4) created between neighboring pile members have a structure that is generally inclined with respect to the direction (A) of the vibration wave, thereby reducing vibration. . Multiple inclined structures of continuous walls reduce vibration.

Each pile member (111, 112, 113, 114, 115) has a central bending portion (B). And, it has a first sheet part (S1) and a second sheet part (S2) lying on different planes through this bending part. The connection portion Ca located on one side described above is provided at the end of the first sheet portion, and the connection portion Cb located on the other side is provided at the end of the second sheet portion.

The connecting portion (Cb) of the pile member (111) is connected to the connecting portion (Ca) of the adjacent pile member (112) so that the second sheet portion (S2) of the pile member (111) and the first sheet portion (S2) of the pile member (112) are connected to each other. The first inclined section (S1) is created by the seat part.

The connecting portion (Cb) of the pile member (112) is connected to the connecting portion (Ca) of the adjacent pile member (113) so that the second sheet portion (S2) of the pile member (112) and the first sheet portion (S2) of the pile member (113) are connected to each other. A second inclined section (S2) is created by the seat part.

The connection portion (Cb) of the pile member (113) is connected to the connection portion (Ca) of the adjacent pile member (114) so that the second sheet portion (S2) of the pile member (113) and the first sheet portion (S2) of the pile member (114) are connected to each other. A third inclined section (S3) is created by the seat part.

And, the connecting portion (Cb) of the pile member 114 is connected to the connecting portion (Ca) of the adjacent pile member 115, so that the second sheet portion S2 of the pile member 114 and the pile member 115 are connected to each other. The fourth inclined section S4 is created by the first sheet part.

In the same way, although not shown in FIG. 4, several inclined sections are created for pile members to be driven later.

The slope sections S1, S2, S3, and S4 according to the embodiment of the present invention have a continuous zigzag structure.

The first inclined section (S1) and the second inclined section (S2) continue seamlessly and continuously through the bending portion (B) of the pile member (112). The consecutive first inclined section (S1) and the second inclined section (S2) intersect at the bending portion (B) of the pile member (112).

The second inclined section (S2) and the third inclined section (S3) continue seamlessly and continuously through the bending portion (B) of the pile member (113). The second consecutive inclined section (S2) and the third inclined section (S3) intersect at the bending portion (B) of the pile member (113).

The third inclined section (S3) and the fourth inclined section (S4) continue seamlessly and continuously through the bending portion (B) of the pile member (114). The third consecutive inclined section (S3) and the fourth inclined section (S4) intersect at the bending portion (B) of the pile member (114).

In this way, the continuous wall according to the embodiment of the present invention improves the anti-vibration effect by tightly and efficiently changing the direction of vibration waves by utilizing multiple inclined sections of a continuous zigzag structure created by pile members. In addition to the screen effect of the continuous wall itself, the refraction effect of the continuous multiple inclined sections is added to effectively prevent vibration.

Figure 5 is a perspective view schematically showing the installation of a vibration isolation structure using an underground continuous wall according to another embodiment of the present invention.

And Figure 6 is a cross-sectional view schematically showing the installation of a vibration isolation structure using an underground continuous wall according to another embodiment of the present invention.

As shown in Figures 5 and 6, the vibration isolation structure 100' using an underground continuous wall according to another embodiment of the present invention may further include a hollow trench 120.

At this time, except that the continuous wall 110' is installed through the hollow trench 120, the contents of the continuous wall 110 in FIGS. 1 to 4 described above can be applied in the same way, focusing on the differences. Take a look.

The hollow trench 120 is excavated to a predetermined depth D2.

The excavation depth of the hollow trench is indicated in direction III in the drawing. For example, it can be excavated to a depth of 3 m from the ground. At this time, the hollow trench can be excavated to a width of 1.4 m. The excavation width is indicated in direction I in the drawing.

Typically, surface waves generated from a vibration source have a frequency of 5 Hz.

The hollow trench is installed between the vibration source (VS) and the building (BI), but can be installed in a passive manner adjacent to the building. It can be installed in a positive manner adjacent to the vibration source, but the passive method is more advantageous for underground vibration isolation structures.

A continuous wall 110' is installed through the bottom 122 of this hollow trench 120. The continuous wall 110' is installed to have a predetermined depth D1 from the bottom 122 of the hollow trench.

The installation depth of the continuous wall is indicated in direction III in the drawing. For example, it can be installed at a depth of 7m.

As described above, the continuous wall 110' has a structure in which a plurality of pile members are connected to each other. That is, a continuous wall can be installed by continuously driving a plurality of pile members in order.

The length at which the hollow trench and continuous wall are installed (indicated in direction II in the drawing) can be determined by considering the scale of the object to be isolated from vibration and the scale of the vibration source.

According to an embodiment of the present invention, the continuous wall 110' may be installed so that its uppermost end (T) is substantially aligned with the bottom 122 of the hollow trench 120. That is, the uppermost end (T) of the continuous wall may be installed at approximately the same height as the bottom portion 122 of the hollow trench. Since hollow trenches are more advantageous in reducing surface waves and continuous walls are more advantageous in reducing real waves, the use of necessary materials is minimized by dividing the roles.

The internal space of the hollow trench assists in the installation of continuous walls by providing enough space to accommodate the hammer (not shown) that strikes when driving piles.

According to this embodiment of the present invention, vibration waves generated from the vibration source VS can be reduced more efficiently. Vibration waves can be largely divided into R-waves, which are surface waves, and P-waves and S-waves, which are real waves. A hollow trench effectively reduces surface waves, and a continuous wall efficiently reduces real waves. In other words, among the vibration waves transmitted from the vibration source, the R wave is dominantly reduced by the hollow trench, and among the vibration waves transmitted from the vibration source, the P wave and S wave are dominantly reduced by the continuous wall, resulting in an underground vibration isolation system with excellent vibration isolation efficiency. Structure can be provided.

In addition, since the hollow structure is formed relatively shallow to reduce surface waves that transmit the largest impact among vibration waves to ground buildings, it is possible to provide an underground vibration-proof structure with excellent constructability.

Figure 7 is a cross-sectional view schematically showing the installation of a vibration isolation structure using an underground continuous wall according to another embodiment of the present invention.

As shown in FIG. 7, the continuous wall 110' of the underground vibration isolation structure is installed through the hollow trench 120, and its uppermost end (T) is located at the upper opening 124 at the lower bottom 122 of the hollow trench. It can be placed at a predetermined location in the section leading to.

In FIGS. 5 and 6 described above, an embodiment is shown in which the uppermost end (T) of the continuous wall is disposed at the same height as the lower bottom 122 of the hollow trench, and in FIG. 7, the uppermost end (T) of the continuous wall is at the same height as the lower bottom 122 of the hollow trench. An embodiment is shown positioned flush with the upper opening 124.

Referring to FIG. 7, the upper opening 124 of the hollow trench 120 of the underground vibration isolation structure may be covered by a cover 130 to prevent safety accidents, and when the cover is present, the uppermost part of the continuous wall (T) may be installed so that it is disposed at approximately the same height as the upper opening 124 of the hollow trench.

In the drawing, the depth at which the hollow trench 120 is excavated from the ground is referred to as D2, and the depth at which the continuous wall 110' is driven from the ground is referred to as D1.

By arranging the uppermost end of the continuous wall in contact with the lower surface of the cover, the continuous wall can serve as a support for the cover.

For example, the hollow trench may be formed to have a width of 1.4 m, and the cover may be provided in a size that sufficiently covers the width of the hollow trench. In this case, a continuous wall may be utilized for the lower support structure of the cover. You can. In other words, the top of the continuous wall can serve to support the cover from below.

In the drawings, for convenience of explanation, the description is centered on the embodiment in which the cover exists above the opening of the hollow trench, but the case is not limited thereto, and if a part of the cover has a shape to be inserted into the hollow trench, the inserted length By driving the continuous wall as deeply as possible, it can serve as a support for the cover.

The cover can be made of sturdy steel or corrosion-resistant aluminum so that it can function as a road or walkway.

In this case, when the opening of the hollow trench is to be covered by a cover, a continuous wall must be present inside the hollow trench to support the cover, that is, the uppermost end of the continuous wall is the same as the upper opening of the hollow trench as shown in the drawing. It can be driven to be placed at any height. In this case, longer length sheet piles can be applied to preserve the reduced length at the bottom of the continuous wall (and thus increase the use of required materials), but by allowing the continuous wall to act as a support structure for the cover, this allows the cover to be used as a support structure for the cover itself. Since there is no need to add reinforcing structures, the increase in cost can be offset.

The underground vibration isolation structure according to an embodiment of the present invention achieves higher vibration isolation efficiency in the direction of vibration waves by forming several dense, continuous inclined sections. Vibration waves incident in the direction perpendicular to the underground vibration isolation structure are efficiently reflected through the continuous zigzag multi-inclined structures. By forming a V-shape without the horizontal sections seen in existing sheet piles, it forms a densely continuous zigzag structure, thereby maximizing the vibration reduction effect.

In addition, the hollow trench, which is a vibration-proof structure according to an embodiment of the present invention, is sufficient to be excavated only to the depth required for surface-wave-oriented vibration isolation, so the shallower the hollow trench, the lower the risk of collapse and improves constructability.

Although the technical idea of the present invention has been specifically recorded according to the above preferred embodiments, it should be noted that the above-described embodiments are for illustrative purposes only and are not intended for limitation. Additionally, an expert in the technical field of the present invention will understand that various embodiments are possible within the scope of the technical idea of the present invention.

100: Vibration-proof structure using underground continuous wall
110: continuous wall
111, 112, 113, 114, 115: Pile member
S1: first sheet portion
S2: Second sheet part
B: bending area
Ca, Cb: connection site
S1, S2, S3, S4: Slope section
T: Top of continuous wall
120: hollow trench
122: bottom part
124: opening
130: cover
BI: Architecture
VS: vibration source
W: underground water

Claims (8)

An underground vibration isolation structure installed between a vibration source and a building to reduce vibration propagated from the vibration source to the building,
A hollow trench formed at a predetermined depth; and
It includes a continuous wall of a plurality of sheet piles connected to each other, installed to have a predetermined depth from the bottom of the hollow trench,
The uppermost end of the continuous wall is arranged to touch the lower bottom of the hollow trench,
Each of the plurality of pile members,
A first sheet part and a second sheet part placed on different planes through a central bending part;
a first connection portion formed at an end of the first sheet portion; and
It includes a second connection portion formed at an end of the second sheet portion,
The plurality of pile members include a first pile member, a second pile member, and a third pile member,
The second connection portion of the first pile member is connected to the first connection portion of the second pile member to create a first slope defined by the second sheet portion of the first pile member and the first seat portion of the second pile member. Form a section,
The second connection portion of the second pile member is connected to the first connection portion of the third pile member to form a second slope defined by the second sheet portion of the second pile member and the first seat portion of the third pile member. Forming a section,
The first slope section and the second slope section have a continuous zigzag structure,
The first inclined section and the second inclined section intersect at a bending portion of the second pile member,
The first pile member, the second pile member, and the third pile member are sequentially driven by a hammer accommodated in the inner space of the hollow trench,
The hollow trench predominantly reduces the R wave among vibration waves generated from the vibration source through its hollow structure,
The continuous wall predominantly reduces P waves and S waves among the vibration waves generated from the vibration source through a zigzag multi-inclined structure.
A vibration-proof structure using continuous underground walls.
delete According to paragraph 1,
A vibration-proof structure using an underground continuous wall, wherein the first sheet portion and the second sheet portion are integrally molded from a single sheet material.
delete delete delete delete According to paragraph 1,
A dustproof structure using an underground continuous wall, further comprising a cover covering the upper opening of the hollow trench.

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