KR20190069991A - Seismic isolation rubber pad for micro-pile and construction method of micro-pile using the same - Google Patents

Abstract

The present invention relates to a seismic isolation rubber pad, coupled to a head of a micro-pile (a pile with a small diameter) buried in a concrete layer to absorb and attenuate a shock, and a method for constructing a micro-pile with a function of earthquake proofing and seismic isolation using the same, and, more specifically, to a seismic isolation rubber pad and a method for constructing a micro-pile with a function of earthquake proofing and seismic isolation using the same, wherein the rubber pad includes: a first seismic isolation pad coupled to encompass a side surface and an upper part of a plate based on the plate (a ground pressing plate) coupled to the head of the micro-pile, an upper fixation unit of the plate and the micro-pile exposed to a set length at an upper part of the plate; a second seismic isolation pad coupled to encompass a lower surface of the plate and a lower fixation unit of the plate; and a third seismic isolation pad which is coupled to a lower part of the second seismic isolation pad while encompassing an exposed part of the micro-pile installed at an upper part of a weak layer.

Description

TECHNICAL FIELD [0001] The present invention relates to a microfiber seismic rubber pad, and a method of constructing a microfiber having seismic isolation function using the microfiber seismic rubber pad,

The present invention relates to a micro pile (small diameter pile) seam rubber pad and a method of constructing a micro pile having seismic and seismic isolation using the same. More particularly, the present invention relates to a micro pile The present invention relates to a microfibre seismic rubber pad that is combined with an anti-seismic function of a microfilm during construction to improve seismic performance, and a method of constructing a microfiber having seismic and seismic functions using the same.

Microfiles installed by drilling holes with a diameter of 30 cm or less are difficult to enter into large equipment which is difficult to apply the existing pile foundation method and have difficulty in entering the large equipment where the pile foundation method is difficult, Etc. are applied simultaneously to the foundation method or the positive pressure countermeasure method.

In order to make the cement grout and high-strength steel rods unite as one as a method which can be used under any ground conditions and working conditions while minimizing the drilling hole while conveying high load force to a small cross section, The bar can maximize the friction force with the grout and can be extended to any length by using a coupler. The plate and the nut are installed at the fixing end to maximize the bearing capacity. .

The conventional microfiles are fixed on the rock for a certain length of time with a friction supporting file and the head of the microfabrication is installed in the foundation concrete in a buried type so that the load of the whole building can be received by the pile, have.

On the other hand, it is also important to hold the seismic load unconditionally strongly (seismic), but it is also important to partially absorb the impact of the seismic load (seismic isolation).

The principle of seismic design is to prevent the seismic wave from affecting the structure by separating the structure and foundation ground from each other if the structure and foundation ground are reinforced by impact and strengthened so that they do not fall off when the seismic wave is transmitted.

Unlike in the past, earthquakes are frequently occurring worldwide, including in Korea, and as the damage increases, the need for seismic isolation and seismic design for buildings is increasing. The construction of seismic design for buildings was mandatory in 1988 and most of the buildings constructed before that were not designed for seismic design. Recently, the importance of seismic design and seismic design has been recognized and applied.

Since the existing reinforced seismic design criteria must be applied to the new or existing structures, the existing seismic design can not guarantee the safety of the structure.

The need to reinforce columns, beams and foundations to resist increased seismic loads has been raised, and the columns, beams and foundation sections have been enlarged for this purpose.

One of the existing microfiles, the microfabrication method, is used mainly for the basic or basic reinforcement of new and unfolded structures in areas where it is difficult to enter large equipment and where the work space is narrow or space is limited. However, It is being used without proper use for countermeasures against earthquake and seismic shocks in Korea

(0001) Korean Patent No. 10-1088788 (seismic file structure using seismic file cap and permanent tensile material) (0002) Korean Patent No. 10-1105377 (Foundation structure of seismic foundation for seismic strengthening of buildings and method of construction thereof)

SUMMARY OF THE INVENTION It is an object of the present invention to provide a method of securing and maintaining an anti-vibration property against the foundation (expansion and contraction) of a structure in which a large equipment is difficult to enter and a narrow space, A micro pile seismic rubber pad configured to act as a buffer to minimize the transmission of seismic waves from the ground to the structure in the event of an earthquake by constructing the pendulum to have a strong vertical load and a soft nature to the horizontal load, The method comprising the steps of:

According to an aspect of the present invention, there is provided a microfibre seam rubber pad, which is bonded to a head of a microfibre embedded in a concrete layer to absorb and attenuate impact, And an isolating member made of a material and covering the entire head of the microfilm.

Also, the base member may include: a first upper surface side pad coupled to the upper fixing portion of the plate and to the upper portion of the plate while surrounding a microfilm having a predetermined length; A second upper surface resilient pad tightly coupled to a side surface of the first upper surface resilient pad and coupled with the upper surface and the side surface of the plate, A first lower surface side pad coupled to the lower fixing portion of the plate while surrounding the lower side fixing portion; A second lower surface side pad which is tightly coupled to a side surface of the first lower side surface elastic pad and is coupled to the lower surface of the plate while surrounding the side surface; And a third lower surface side pad coupled to the lower portion of the second lower side surface pad while surrounding the exposed portion of the micro pile located above the soft layer.

Further, a protruding portion is formed on the inner surface of the base member contacting the head portion of the micro-pile.

Meanwhile, a method of constructing a micro-file having an earthquake-proof function and a seismic isolation function using the micro-pile seismic-resistant rubber pad of the present invention includes a micro pile construction step of installing a pile- A third bottom facing pad bonding step of bonding the third bottom facing pad to the pile exposed to the top of the soft layer; A first lower surface side pad bonding step of coupling the first lower side surface side pad to the upper end of the third lower side surface side pad; Joining the second upper surface side resilient pad and the second lower side surface resilient pad to a plate (a platen) and then assembling the upper surface resilient pad to the upper end of the first lower side resilient pad; Joining the first upper surface side resilient pad to an upper portion of the assembled plate; And a foundation concrete pouring step.

As described above, according to the present invention, it is possible to apply the present invention to a conventional pile construction method with a simple additional structure and a low cost by combining an elastic member having elasticity with a rubber material on the entirety of the head of the micro pile.

In addition, since the seismic member is simply constituted by the first upper seismic pad, the second upper seismic pad, the first lower seismic pad, the second lower seismic pad, and the third lower seismic pad, Since the structure is simple, the working efficiency can be improved.

In addition, by forming the concave-convex portion on the inner surface of the seismic member, the impact damping effect can be improved.

In addition, by applying the above-mentioned seamed rubber pads to a micro pile, the micro pile head (HEAD) that is embedded on the basis of the expansion / contraction of the existing structure secures the original load support and seismic resistance of the friction pile, It is possible to maximize the safety of the structure by restraining the transmission of the seismic waves to the structure as much as possible and acting as a damping material. That is, by adding a simple structure, it is possible to improve seismic performance as well as seismic performance.

1 is a conceptual exploded perspective view of a microfibre seam rubber pad according to an embodiment of the present invention,
Fig. 2 is a side sectional view of Fig. 1,
3 is a conceptual exploded side cross-sectional view of another embodiment of a microfiber seam rubber pad according to the present invention,
4 is a conceptual view of a third surface-relief pad according to another embodiment of the microfiber seam rubber pad according to the present invention,
5 is a schematic view showing a construction section of a conventional microfiber,
6 is a view schematically showing the construction of a microfilm using a microfibre seam rubber pad according to the present invention,
7 is a process diagram according to a method of constructing a micro-file having an earthquake-proof and seismic isolation function according to the present invention.

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail.

It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. Like reference numerals are used for like elements in describing each drawing.

The terms including ordinal, such as second, first, etc., may be used to describe various elements, but the elements are not limited to these terms.

The terms used herein are used only for the purpose of distinguishing one element from another. For example, without departing from the scope of the present invention, the second component may be referred to as a first component, and similarly, the first component may also be referred to as a second component. And / or < / RTI > includes any combination of a plurality of related listed items or any of a plurality of related listed items.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the terms "comprises" or "having" and the like are used to specify that there is a feature, a number, a step, an operation, an element, a component or a combination thereof described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a conceptual exploded perspective view of a microfiber seam rubber pad according to the present invention, FIG. 2 is a side sectional view of FIG. 1, and FIG. 3 is a perspective view of a microfiber seam rubber pad according to another embodiment 4 is a conceptual view of a third side pad according to another embodiment of the microfibre seam rubber pad according to the present invention, and Fig. 5 is a schematic cross-sectional view schematically showing a construction cross- FIG. 6 is a view schematically showing a construction of a microfabricated with a microfibre seam rubber pad according to the present invention, and FIG. 7 is a view showing a construction of a microfiber having an anti- It is a process chart.

1 to 7, a microfiber seismic rubber pad of the present invention and a construction method of a microfiber having seismic and seismic isolation functions using the same will be described.

First, the microfiber seismic rubber pad of the present invention is bonded to a head of a micro pile 30 embedded in a concrete layer to absorb and attenuate impact.

That is, it is composed of a rubber material having elasticity or a synthetic resin material, and is made up of an insulating member 100 that covers the entire head of the micro pile 30.

All files on the site installed by drilling with a small diameter of 30 cm or less in diameter are referred to as micro files (small diameter piles) in a comprehensive sense, and helical files constructed in a similar manner to the HEAD- pile, screw-pile, and the like are all corresponding to small-diameter piles. In the drawings, only the micro-pile 30, which is a small-diameter pile according to one embodiment, is shown.

The seam member 100 includes a first upper side resilient pad 110, a second upper side resilient pad 120, a first lower side resilient pad 130, a second lower side resilient pad 140, As shown in FIG.

1 to 3 and 6, the first upper surface resilient pad 110 is fixed to the upper portion of the plate 50 with respect to the plate 50, which is coupled to the head of the micro pile 30, And the microfiber 30 exposed by a predetermined length is wrapped around the upper portion of the plate 50.

The toe portion of the microfiber 30 refers to the exposed portion of the outer side of the soft layer 10 (upper portion of the soft layer in the drawing) and will include both the microfibers 30 and the plate 50 coupled thereto, In the drawing, the upper fixing part can be understood as a fixing nut 60 for fixing the plate 50 at the upper part of the plate 50. [

The second upper seismic pad 120 is tightly coupled to the side surface of the first upper seismic pad 110 and is coupled while covering the upper surface and the side surface of the plate 50.

The first lower seismic isolation pad 130 is coupled with the lower fixing part of the plate 50 while the lower fixing part is seen as a fixing nut 60 for fixing the plate 50 at the lower part of the plate 50 .

The second lower seismic isolation pad 140 is tightly coupled to the side surface of the first lower seismic isolation pad 130 and is coupled while wrapping the lower surface and the side surface of the plate 50.

The side surfaces of the plate 50 are all wrapped by the second upper side vibration pad 120 and the second lower side side vibration pad 140 and the side surfaces of the plate 50 are respectively surrounded by half, It is not desirable to limit the shape, length, and ratio of the side surface of the plate 50 if the side surface of the plate 50 is entirely enclosed by the upper and lower lower surface resilient pads 120 and 140.

The third lower seismic isolation pad 150 is coupled to the lower portion of the first lower seismic isolation pad 130 while surrounding the exposed portion of the microfilm 30 located above the soft insulation layer 10, The hole can be formed.

1 and 2, the seismic member 100 includes a first upper side resilient pad 110, a second upper side resilient pad 120, a first lower side resilient pad 130, a second lower side resilient pad 140, It is not preferable to limit the coupling structure, the number, the shape, and the like, as long as it is a shape that can be coupled while wrapping the head of the micro pile 30, 4, the third lower ground plane pad 150 may be formed of two parts.

In the case of two parts, each constituent part may be fastened with a bolt or the like, or may be combined with a male and female protrusions on the contact surface, and other than the above-mentioned methods as long as the contact surfaces are in close contact with each other.

3, the first upper surface resilient pad 110, the second upper surface resilient pad 120, the first lower resilient pad 130, and the second lower resilient pad (not shown), which are in contact with the head of the micro- 140 and the third lower seismic isolation pad 150 may have recesses 200 formed therein.

The size and the ratio of the concave and convex portions 200 are conceptually shown. By reducing the surface of the concave and convex portion 200 which is in contact with the head portion of the micro file 30 and securing a space, It is possible to attenuate effectively. That is, it is effective to attenuate an impact by attenuating an impact or the like over a third or more degree according to the shape of the concave-convex portion 200 through the concave-convex portion 200 through the first or second order.

The shapes and sizes of the concave and convex portions 200 may be differently applied, and irregular shapes as well as regular shapes may be used.

5 to 6, a method of constructing a micro-file having an earthquake-proof and seismic isolation function using a microfibre seismic rubber pad according to the present invention will be described.

The simplicity of the structure of the microfibre seismic rubber pad of the present invention can be easily seen by comparing FIGS. 5 and 6. FIG.

That is, the structure of the conventional micro pile 30 includes a first upper surface resilient pad 110, a second upper surface resilient pad 120, a first lower surface resilient pad 130, a second lower surface resilient pad 140, Assembling is completed when the lower side seismic pad 150 is coupled and the second upper side resilient pad 120 and the second lower side resilient pad 140 are coupled by a fastening member 300 such as a bolt and a nut.

The closing member 310 is attached to the fastening member 300. The closing member 310 may be made of the same material as the base member 100 or may be made of another material having elasticity can do.

Although the closing member 310 does not protrude from the drawing and is configured to form the same plane as the second upper face-to-face member 120 and the second lower face-to-face member 140, If the fastening member 310 is engaged and the fastening member 300 is not in direct contact with the concrete when the concrete is poured, it can be deformed as much as possible.

That is, the seismic isolation member 100 should be structured so as to surround the entirety of the head so that the head of the micro pile 30 is not in direct contact with the concrete.

The construction procedure according to the above structure includes a microfabrication step S100, a third lower side interposed pad coupling step S200, a first lower side interposed pad coupling step S300, a plate coupling step S400, A joining step S500 and a foundation concrete casting step S600.

Since the microfile construction step S100 is a known technology and is the same as the conventional technology, a detailed description thereof will be omitted, and there may be a difference in the order of construction depending on the type of the microfiles 30. However, Is omitted.

In the third lower side isolation pad bonding step S200, the third lower side surface pad 150 is coupled to the head of the micro pile 30 exposed to the outside (upper side) of the soft layer 10 after the micro pile 30 is installed. do.

Thereafter, the first lower facing pad 130 is coupled to the upper end of the third lower facing pad 150 through the first lower facing pad bonding step S300.

The first lower seismic isolation pad 130 is coupled with a fixing nut 60.

After the first lower side surface facing pad 130 coupled with the fixing nut 60 is coupled, the plate 50 is coupled to the upper end of the first lower side surface side pad 130 through the plate bonding step S400.

At this time, the second upper side surface elastic pad 120 and the second lower side surface elastic pad 140 are assembled to the plate 50 by the fastening member 300, and they can be delivered from the factory when assembled.

The fastening member 300 may be attached with the finishing member 310 or may be further attached with the finishing member 310 after the binding.

Thereafter, the first upper surface resilient pad 110 is coupled through the first upper surface resilient pad attaching step (S500), and the fixing nut 60 is also coupled to the first upper surface resilient pad 110.

Accordingly, the first lower surface elastic pad 130 is fastened together with the first upper surface elastic pad 110 while coupling the first upper surface elastic pad 110, and the plate 50 is fixed and the fastening member 100 is tightened .

Thereafter, the foundation concrete 70 is laid, and the foundation concrete 70 is laid in a known manner, and a detailed description thereof will be omitted.

The above-described construction procedure is completed by fastening only the seismic member 100 in the conventional construction procedure. By the present invention, it is possible to easily work with a simple structure and process, thereby improving work efficiency and improving seismic performance, (30).

10: soft layer 20: rock layer
30: microfiber 40: casing
50: plate 60: fixing nut
70: Concrete
100: Isolation member
110: first upper seismic pad 120: second upper seismic pad
130: first lower seam pad 140: second lower seam pad
150: Third lower side spacer
200: uneven portion
300: fastening member
310: Closing member
S100: Micro file construction step
S200: Third lower septal pad bonding step
S300: First lower septal pad bonding step
S400: plate combining step
S500: First upper seismic pad joining step
S600: Step of placing foundation concrete

Claims (4)

The present invention relates to a micro pile seismic rubber pad which is joined to a head of a micro pile (a small diameter pile) embedded in a concrete layer to absorb and attenuate impact,
Characterized in that the pad is made of a rubber material having elasticity and is made of a seismic member which covers the entire head of the micro pile.
2. The seat according to claim 1,
A first upper surface side pad coupled with an upper fixed portion of the plate and an upper portion of the plate while surrounding a microfilm exposed by a predetermined length;
A second upper surface resilient pad tightly coupled to a side surface of the first upper surface resilient pad and coupled with the upper surface and the side surface of the plate,
A first lower surface side pad coupled to the lower fixing portion of the plate while surrounding the lower side fixing portion;
A second lower surface side pad which is tightly coupled to a side surface of the first lower side surface elastic pad and is coupled to the lower surface of the plate while surrounding the side surface; And
And a third lower surface side pad coupled to the lower portion of the second lower side surface pad while surrounding the exposed portion of the micro pile located above the soft layer.
The method according to claim 1,
And a concave-convex portion is formed on an inner surface of the base member contacting the head portion of the micro-pile.
A method of constructing a micro pile having an earthquake-proof and seismic isolation function using the micro pile seismic resistant rubber pad according to any one of claims 1 to 3,
A microfabrication step of installing a pile on a soft layer;
A third bottom facing pad bonding step of bonding the third bottom facing pad to the pile exposed to the top of the soft layer;
A first lower surface side pad bonding step of coupling the first lower side surface side pad to the upper end of the third lower side surface side pad;
Joining the second upper surface side resilient pad and the second lower side surface resilient pad to a plate (a platen) and then assembling the upper surface resilient pad to the upper end of the first lower side resilient pad;
Joining the first upper surface side resilient pad to an upper portion of the assembled plate; And
And a foundation concrete pouring step.

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