KR102102366B1 - Reinforcement structure using steel plate with guide anchor for controlling distance - Google Patents

Abstract

The present invention relates to a seismic reinforcement structure using a steel plate with a guide anchor for maintaining an interval and a construction method thereof, and more specifically, to a seismic reinforcement structure using a steel plate with a guide anchor for maintaining an interval and a construction method thereof. A plurality of guide anchors for maintaining an interval are installed on the steel plate so that a separation distance is uniformly controlled in accordance with a work site. Therefore, unlike the prior method of controlling the separation distance with feelings of workers, the separation distance between an outer surface of a beam or a column and the steel plate is uniformly maintained so that the thickness of a filling material filled in a separation space is also uniformly maintained. Thus, seismic reinforcement quality control can be effectively improved.

Description

Seismic reinforcing structure using steel sheet with guide anchors for maintaining gaps and its construction method {REINFORCEMENT STRUCTURE USING STEEL PLATE WITH GUIDE ANCHOR FOR CONTROLLING DISTANCE}

The present invention relates to a seismic reinforcing structure using a steel sheet having a guide anchor for maintaining a gap and a construction method thereof, and more specifically, by installing a plurality of guide anchors for maintaining a gap in the steel sheet, uniformly spaced distances suitable for the work site Unlike the previous method, in which the separation distance was adjusted by the operator's feeling, the separation distance between the outer surface of the beam or the pillar and the steel sheet was maintained uniformly, and thus the thickness of the filler filling the separation space was also maintained. It relates to a seismic reinforcing structure using a steel plate formed with a guide anchor for maintaining a gap, which can effectively improve the seismic reinforcing quality control, and a construction method therefor.

Since Korea began scientific seismic observation in 1978, the frequency of occurrence of earthquakes has increased, so it is no longer an earthquake safety zone.

Regarding the seismic design of buildings, seismic-related regulations have been enacted in the Building Act since 1988, and after a few revisions, the scope has been expanded and expanded to apply seismic-related regulations to small buildings in 2015.

However, since the seismic design regulations are applied to new buildings, the buildings constructed prior to the introduction of the seismic design regulations were designed and constructed without considering the effects of earthquakes, and the aging and expansion of concrete with the increase of the elapsed years, Due to the increase in loads due to remodeling, such as reconstruction and repair, the seismic performance due to insufficient load capacity is not properly exhibited.

In the event of an unexpected earthquake, such buildings are expected to suffer a lot of human lives, and it is expected that the economic and social losses due to reconstruction as well as the direct economic damage caused by the collapse and damage of buildings will be enormous.

Accordingly, national and local governments have seismicized to comply with the seismic design standards for national important facilities in order to protect people's lives, property, and major infrastructure from earthquake disasters in accordance with the 「Basic Act on Disaster and Safety Management」 and the purpose of this Act. Reinforcement is being promoted. Seismic evaluation of privately-owned facilities is recommended, and reinforcement or supplementation is recommended. As a result, various studies on seismic reinforcement methods for existing buildings and facilities are currently underway.

Unlike the earthquake-resistant design method applied to new buildings, the seismic reinforcement method needs to be reinforced to existing buildings or facilities, so it is necessary to consider usability, constructability, and economics, and consider appropriate characteristics of existing buildings and facilities. You need to choose

Seismic reinforcement methods of existing buildings and facilities include a method of reinforcing structures and a method of reducing earthquake loads on buildings.

Among them, the method that is generally adopted is a method of reinforcing the structure to increase strength and ductility, and there are methods of increasing and reinforcing the existing member cross-sections of existing buildings or facilities and attaching reinforcing materials.

According to the method of increasing the cross-sectional area of the beam or column of the structure or increasing the strength and ductility, the separation distance between the beam or column of the structure and the reinforced steel sheet should be applied differently. Frequently, the separation distance between the steel plate and the pillar is not constant.

Normally, in order to install a reinforced steel plate on a beam or a pillar of a structure, the reinforced steel plate must be fixed with an anchor bolt in a hole pre-drilled in the beam or pillar. When fixing the reinforced steel plate while tightening the anchor bolt, the inside of the reinforced steel plate is visually observed from the outside. Since the separation distance between the structure and the reinforcing steel plate is constructed with the intuition of the operator, the separation distance is not constant and jagged, so there is a problem that the filling material is not thick enough or there is no space to enter the grouting itself. It was difficult to expect good quality due to this.

Nevertheless, there is no guide device to keep the space between the beams or steel plates of the building constant, so the operator secures a rough gap with the eye.

In addition, the work is performed in such a way that the reinforcing steel sheets surrounding the outer circumferential surface of the structure's beams or pillars are carried one by one at the site and welding the parts where the reinforcing steel plates and the reinforcing steel plates come into contact with each other. Due to this, there is a problem that it is difficult to secure safety due to the reduced economic efficiency and the risk of fire due to on-site welding.

The present invention has been derived to improve the problems of the prior art.

Republic of Korea Registered Patent 10-1391184 (Registration Date 2014.04.25)

The present invention provides a seismic reinforcing member to the main members of the beams and pillars constituting the structure to stably support the important structures from earthquakes, resulting in concrete aging and remodeling such as extension, remodeling, repair, etc. It is intended to increase the strength and ductility by reinforcing the cross section or increasing the cross-sectional area on a beam or column member that has insufficient strength due to an increase in load, etc., and to improve the strength of the beam or column of the structure. By installing the guide anchor for the operator, the distance between the outer surface of the beam or the pillar and the steel plate are maintained uniformly, unlike the previous method, in which the separation distance was adjusted with the operator's feeling by uniformly adjusting the separation distance suitable for the work site. As the thickness of the filling material filled in the separation space is also kept uniform, seismic resistance And that the cavity-holding guide anchor capable of improving the steel effectively quality control is to provide an earthquake-proof reinforcement structure and a construction method using the formed steel plate for the purpose of the invention.

To solve the above problem,

'의 판형상의 상부단면을 갖는 제1보강용 강판과,The present invention is to wrap spaced apart at a predetermined distance from the outer surface of the beam or pillar structure, one side is open '

The first steel plate for reinforcement having a plate-shaped upper section,

Bonding to the open rim of the first reinforcing steel sheet, the second reinforcing steel sheet of a rectangular plate type,

A guide anchor for maintaining a gap, which is installed on a plurality of inner surfaces of the first reinforcing steel sheet and the second reinforcing steel sheet, and controls the separation distance from the outer circumferential surface of the structure to the steel sheet constantly,

In order to fix the steel plate spaced a predetermined distance from the outer surface of the structure by the guide anchor for maintaining the gap, an anchor bolt that penetrates the steel plate and is formed with a fixing hole pre-drilled in the structure,

The structure and the steel plate are fastened by the anchor bolts, and a seismic reinforcement structure using a steel plate formed with a guide anchor for spacing, including a filling material filling a space formed between the structure and the steel plate by the guide anchor for spacing. Provides

And as a construction method of the seismic reinforcement structure,

Pre-treating the surface of the beam or pillar of the structure (S10);

Perforating a plurality of fastening holes for fastening anchor bolts to the beams or pillars of the structure (S20);

The cross-section of the steel sheet surrounding the outer circumferential surface of the beam or pillar of the structure is pre-manufactured to form a 'U' shape, but a guide anchor for maintaining the gap to maintain a certain distance from the outer circumferential surface of the beam or pillar of the structure is provided. A step of manufacturing a first reinforcement steel sheet by installing a plurality of coupling holes for coupling anchor bolts for fixing steel sheets to the beams or pillars of the structure (S30);

A guide anchor for spacing to maintain a certain distance from the outer circumferential surface of the beam or pillar of the structure to the steel sheet having a rectangular parallelepiped shape so as to contact along the rim of the open surface of the first reinforcement steel sheet, the inner surface of the steel sheet Is installed in a number, the step of manufacturing a second steel plate for reinforcing by drilling a plurality of coupling holes for coupling the anchor bolt for fixing the steel plate to the beam or pillar of the structure (S40);

The first reinforcing steel plate and the second reinforcing steel plate are fixed in a state spaced apart from the beams or pillars of the structure using anchor bolts, but the reinforcing steel plates are fixed from the beams or pillars of the structure using the guide anchors for maintaining the gap. Step to adjust to be spaced apart and fixed (S50);

It provides a construction method for forming a seismic reinforcement structure comprising; grouting the space between the beams or pillars of the structure and the reinforcing steel plate (S60).

Seismic reinforcing structure using a steel sheet having a guide anchor for maintaining a gap in the present invention has the following effects.

first. A number of guide anchors are installed on the steel plate surrounding the outer surface of the beams or pillars of the building, and unlike the previous method of adjusting the separation distance with the operator's feeling by uniformly adjusting the separation distance suitable for the work site, or As the separation distance between the outer surface of the pillar and the steel sheet is maintained uniformly, and thus the thickness of the filling material filled in the separation space is also maintained uniformly, it is possible to effectively improve the seismic reinforcement quality control.

' 형태로 절곡된 강판을 사용함으로써 용접 및 접합부위를 최소화하여 공사기간을 상당시간 단축시킬 수 있고, 용접에 의한 화재발생 위험도를 최소화시킬 수 있는 장점을 갖는다.second. The upper section is'

'By using the steel plate bent in the form, it minimizes welding and joining parts, shortening the construction time significantly, and has the advantage of minimizing the risk of fire caused by welding.

third. It has the advantage of improving work efficiency and work safety.

1 is a perspective view of a seismic reinforcing structure using a steel sheet having a guide anchor for spacing according to the present invention.
Figure 2 is a front cross-sectional view and a partially enlarged view of the earthquake-resistant reinforcement structure using a steel sheet formed with a guide anchor for spacing according to the present invention.
Figure 3 is an exploded perspective view of a seismic reinforcement structure using a steel sheet formed with a guide anchor for spacing according to the present invention.
4 is an exploded perspective view of FIG. 3;
Figure 5 is a side view of a seismic reinforcement structure using a steel sheet formed with a guide anchor for spacing according to the present invention.
Figure 6 is a one-way perspective view of the guide anchor for maintaining the gap constituting the earthquake-resistant reinforcement structure of the present invention.
7 is a perspective view from the other direction of the guide anchor for maintaining a gap constituting the earthquake-resistant reinforcement structure of the present invention.
8 is a one-way perspective view of the anchor bolt constituting the earthquake-resistant reinforcement structure of the present invention.
9 is a perspective view from the other side of the anchor bolt constituting the earthquake-resistant reinforcement structure of the present invention.

Hereinafter, with reference to the drawings for the technical configuration of the description will be described in detail.

1 to 5,

'의 판형상의 상부단면을 갖는 제1보강용 강판(10)과,The seismic reinforcement structure 1 according to the present invention is a spaced apart at a predetermined distance from the outer surface of the structure 100, which is a beam or a column, and one side is open '

The first steel plate for reinforcement 10 having a plate-shaped upper cross-section,

Bonding to the open rim of the first reinforcing steel sheet 10, the second reinforcing steel sheet 20 in the form of a rectangular plate,

Intervals that are installed on the inner surfaces of the first reinforcing steel sheet 10 and the second reinforcing steel sheet 20, to regularly control the separation distance from the outer circumferential surface of the structure 100 to the steel sheets 10 and 20 Retention guide anchor 30,

In order to fix the steel plates 10 and 20 spaced a predetermined distance from the outer surface of the structure 100 by the guide anchor 30 for maintaining the gap, the structure 100 is penetrated through the steel plates 10 and 20 Anchor bolt (40) to form a combination with a pre-drilled fixing hole,

The structure 100 and the steel plates 10 and 20 are fastened by the anchor bolt 40, and spaced between the structure 100 and the steel plates 10 and 20 by the guide anchor 30 for maintaining the gap. It includes a filling material 50 to fill the space formed.

The shape of the first reinforcing steel sheet 10 shows a cross section viewed from the top. As shown in FIGS. 3 and 4, a quadrangular column shape having four surfaces is formed, and one of the four surfaces has an open structure.

'인 강판을 사용함으로써, 상기 구조의 제1보강용 강판(10)으로 구조체(100)의 외둘레를 감싸 넣어, 상기 구조체(100)가 제1보강용 강판(10) 내부에 놓이도록 한 후, 판형 구조를 이루고 있는 제2보강용 강판(20)으로 상기 개방된 일면을 용접 등의 접합수단으로 일체화시키면 된다. 이와 같이 상기 제1보강용 강판(10)과 제2보강용 강판(20)을 용접 등의 접합 수단을 통해 접합을 이룬 일체는 상하부가 개방된 중공의 육면체 구조를 이루게 된다.The upper section is'

By using the 'in steel plate, the outer circumference of the structure 100 is wrapped with the first reinforcement steel plate 10 of the structure, so that the structure 100 is placed inside the first reinforcement steel plate 10 , The second surface of the steel plate 20 for forming a plate structure may be integrated with the open one surface by a bonding means such as welding. As described above, the integral part of the first reinforcing steel plate 10 and the second reinforcing steel plate 20 joined by means of welding or the like forms a hollow hexahedral structure with upper and lower portions open.

' 형상을 절곡된 것을 사용함으로써, 기존 네 개의 면을 모두 용접하는 방식과 비교하여 볼 때 일정한 품질의 제1보강용 강판(10)을 사용함에 따른 시공품질의 신뢰성을 높일 수 있다.The first reinforcing steel plate 10 is'

By using a bent shape, it is possible to increase the reliability of the construction quality by using the first reinforcement steel plate 10 of constant quality in comparison with the method of welding all four surfaces.

And by using the first reinforcement steel plate 10 in a bent state, the construction period can be shortened considerably and compared to the method of welding butt-welding to form four sides using four steel plates of the existing plate type. As it is used, quality control is advantageous, and it has the advantage of securing constructability and safety.

In addition, by minimizing the welding or joining area, it is possible to secure the safety of construction by reducing the risk of fire due to welding on site.

The first steel plate 10 for reinforcement, as shown in Figure 4, after pushing the concrete structure 100 to wrap around the outer circumference, by bonding with the second steel plate 20 for reinforcement, the concrete structure 100 Can be completely wrapped by placing it in the center of the inside.

The steel sheet (10, 20) is a Zn-Mg-Zn multi-layer plated steel sheet plated in the order of Zn, Mg, and Zn on the Fe steel sheet surface, and then heated to 200 ° C. under a vacuum atmosphere at a heating rate of 30 ° C./s. After that, by using the product prepared by heat treatment at 200 ° C. for 50 to 70 minutes, it has high strength characteristics and corrosion resistance characteristics, thereby improving construction quality and maintenance.

Zinc-magnesium alloys have high corrosion resistance, but Zn has excellent adhesion by forming several intermetallic compounds between Fe, but it has poor plating adhesion because it does not form any intermetallic compounds between Fe and Mg. Accordingly, in the present invention, a Zn-Mg-Zn multi-layer plated steel sheet plated in the order of Zn, Mg, and Zn on the Fe steel sheet surface is prepared and then heat-treated to complete the steel sheets 10 and 20.

The concrete structure 100 wrapped by using the reinforcing steel plates 10 and 20 is spaced apart from the reinforcing steel plates 10 and 20 by a predetermined width to form a gap. Is for

The feature of the present invention is to install a plurality of spacing guide guide anchors on the reinforcing steel plates (10, 20), and adjust the separation distance according to the work site uniformly. Or, it is possible to effectively improve the seismic reinforcement quality control by keeping the separation distance between the outer surface of the pillar and the steel plate uniform, and thereby maintaining the uniform thickness of the filler filling the separation space.

In general, in order to fix the steel plate to the concrete pillar, the anchor bolt that penetrates the steel plate is inserted into the concrete pillar through a hole that is pre-drilled and tightened. However, it is difficult to accurately measure the separation distance between the concrete pillar and the steel plate because the operator's view is obscured by the steel plate, and the construction is performed while maintaining the proper separation distance entirely with the intuition of the operator.

The problem with this construction is that it is difficult to maintain a constant separation distance between the concrete column and the steel plate.

If the separation distance is not uniform and sharp and sharp, the thickness of the filling material is also not constant, and in severe cases, the grouting itself cannot be performed, so that the seismic reinforcement cannot be properly performed.

Therefore, in the present invention, as shown in FIGS. 1 to 7, a plurality of spacing guide guides 30 are installed on the reinforcing steel plates 10 and 20.

The guide anchor 30 for maintaining the gap has a gap between the guide anchor 30 for maintaining the gap and the cylindrical structure of the steel plate coupling part 31 having a columnar structure and 2 to 4 times the diameter of the steel plate coupling part 31. It is composed of a space adjusting part 32 that is in contact with the structure 100 in the adjusted state,

The steel plate coupling portion 31 has a cylindrical shape with a front end portion 311 coupled to the steel plates 10 and 20, and a screw line 312a is formed to form a screw connection with the gap adjusting portion 32 and the rear end portion ( 312),

The gap adjustment part 32 is formed with a bend surface 321 for interval spacing identification along the outer circumferential surface, a reference mark 322 for spacing adjustment is formed on the front surface of the structure 100, and the gap adjustment reference table Characters of 'in' and 'out' are displayed in both directions based on the hour 322, and before and after turning the gap adjusting portion 32 along the thread 312a formed in the steel plate engaging portion 31 It is used to make it easy to check the moving direction and the moving interval.

The guide anchor 30 for maintaining the gap, as shown in Figures 2 to 4, the steel plate coupling portion 31 forms a coupling with the reinforcing steel plates (10, 20), the opposite space adjustment portion 32 After adjusting the interval using a constant, after the adjustment of the interval is completed, as shown in Figure 4, the first reinforcing steel plate 10 is pushed to surround the concrete structure 100 with a circumference, and 2 By joining the steel plate 20 for reinforcing, the concrete structure 100 is placed in the center of the interior and completely wrapped.

At this time, the spaced apart between the reinforcing steel plates 10 and 20 and the structure 100 maintains a uniform constant distance by the guide anchor 30 for maintaining the gap.

As shown in FIG. 7, the gap adjusting part 32 moves forward or backward along the screw thread 312a formed in the rear end part 312 of the steel plate coupling part 31 as it rotates in one direction, The distance between the reinforcing steel plates 10 and 20 and the concrete structure 100 can be kept constant.

At this time, since the reference mark 322 for adjusting the gap is formed on the front surface of the gap adjusting part 32, and the characters of 'in' and 'out' are displayed in both directions based on the reference mark 322 for adjusting the gap, By rotating in the left or right direction based on the reference mark 322 for adjusting the spacing, the spacing can be adjusted according to the movement before and after the spacing adjusting unit 32.

In addition, since the outer circumferential surface of the gap adjustment part 32 forms a plurality of bent surfaces with a certain width, it is possible to measure a certain distance forward or backward along with the reference mark 322 for the gap adjustment, so that the reinforcing steel plate 10, It is configured to more easily maintain a predetermined distance through the guide anchor 30 for maintaining the gap installed in 20).

In this way, the present invention, as the guide anchor 30 for maintaining the gap is installed on the steel plates 10 and 20, reinforced from the four sides of the structure 100, deviating from the method of securing the rough gap with the sense of the conventional worker As the separation distance to the steel plates 10 and 20 is maintained under uniformity, the seismic reinforcement quality by the filling material filled between the steel plates 10 and 20 for reinforcement and the concrete structure 100 can be maintained uniformly as a whole. The construction quality can be greatly improved.

Figure 3 is a side view of the seismic reinforcement structure 100 using the reinforcement steel plate 10, 20 formed with a guide anchor 30 for spacing according to the present invention, the guide anchor 30 and the anchor bolt 40 for spacing ) Shows that the concrete structure 100 and the reinforcing steel plates 10 and 20 are fixedly spaced.

The anchor bolt 40 is carbon (C) 0.39 ~ 0.40 wt%, silicon (Si) 0.22 ~ 0.24 wt%, manganese (Mn) 0.76 ~ 0.84 wt%, phosphorus (P) 0.007 ~ 0.014 wt%, sulfur (S ) 0.003 to 0.008 wt%, chromium (Cr) 0.81 to 0.89 wt%, manganese (Mo) 0.13 to 0.20 wt%, nickel (Ni) 0.12 to 0.16 wt%, copper (Cu) 0.07 to 0.10 wt% and iron (Fe) ) Use the remaining amount.

The anchor bolt 40 having the above configuration is austenitized by heat treatment at 860 to 880 ° C. for 80 to 100 minutes, and air-cooled after tempering treatment at 550 to 650 ° C. for 80 to 100 minutes, and the component composition And it is excellent in high strength properties and low temperature toughness and mechanical properties by the heat treatment process.

The filler filled between the concrete structure 100 and the reinforcing steel plates 10 and 20 is any one selected from cement mortar, epoxy resin or polymer cement mortar containing special fibers, and reinforced with the concrete structure 100 Grouting so that the steel plates 10 and 20 are integrated.

More specifically, specific gravity 1.3, length 12 ~ 14mm, diameter 35 ~ 43㎛, tensile strength 1,400 ~ 1,800 MPa, elastic modulus 35 ~ 39 GPa polyvinyl alcohol (Polyvinyl alcohol, PVA) synthetic fiber 1.5 ~ 5.0 wt% , Water 18.0 ~ 26.0 wt%, Cement 20.0 ~ 28.0 wt%, Fumed Silica 0.8 ~ 3.0 wt%, Fly ash 14.5 ~ 23.5 wt%, Particle Size 2 ~ 5㎛ Limestone (CaCO ₃ ) Composite cement (a) 23.0 ~ 38.0 wt% composed of fine powder filler 30.1 ~ 35.3 wt% and naphthalene-based or melamine-based super plasticizer 0.1 ~ 0.3 wt% 100.0 wt% ;

Sand (b) 25.2-35.0 wt%;

A crack inhibitor consisting of 45.0 to 55.0 wt% of Portland cement and 100.0 wt% of dolomite powder 45.0 to 55.0 wt% (c) 3.8 to 11.5 wt%;

Any one or two cement-based injection materials selected from micro cement or colloid cement having a particle size of 1.0 to 24.0 µm (d) 2.5 to 10.5 wt%;

SiO ₂ 1.0 ~ 4.2 wt%, A1 ₂ O ₃ 20.2 ~ 26.7 wt%, Fe ₂ O ₃ 0.3 ~ 1.5 wt%, CaO 38.2 ~ 47.2 wt%, MgO 0.1 ~ 0.4 wt%, SO ₃ 25.1 ~ 33.7 wt% 0.50.0 to 5.5 wt% of the rapid injection material (e) having a powder composition of 100.0 wt% (cm 2 / g) 5,000;

Water (f) 30.0 ~ 45.0 wt%; consisting of (a + b + c + d + e + f) is used.

The cement-based injecting material exhibits relatively excellent characteristics not only in long-term strength but also in initial strength, and serves to improve durability by increasing the injectability and strength of the filler.

Looking at the construction process using the seismic reinforcement structure (1) as described above is as follows.

That is, the construction method of the seismic reinforcement structure (1) is a step of pre-treating the surface of the beam or pillar of the structure (100) (S10);

Punching a plurality of fastening holes 101 for fastening the anchor bolts 40 to the beams or pillars of the structure 100 (S20);

It is manufactured in advance so that the cross-section of the steel sheet surrounding the outer circumferential surface of the beam or pillar of the structure 100 forms a 'c' shape, but for maintaining a gap to maintain a certain distance from the outer circumferential surface of the beam or pillar of the structure 100 A plurality of guide anchors 30 are installed on the inner surface of the steel plate, and a plurality of coupling holes 401 for coupling the anchor bolts 40 for fixing the steel plate to the beams or pillars of the structure 100 are drilled. Manufacturing a first reinforcing steel sheet 10 (S30);

A guide anchor for maintaining a gap to maintain a certain distance from the outer circumferential surface of the beam or pillar of the structure 100 to the steel plate forming a rectangular parallelepiped so as to contact along the rim of the open surface of the first reinforcing steel plate 10 A plurality of 30 is installed on the inner surface of the steel plate, and a plurality of coupling holes 401 for coupling the anchor bolts 40 for fixing the steel plate to the beams or pillars of the structure 100 are drilled, and the second Step of manufacturing the reinforcing steel sheet 20 (S40);

The first reinforcing steel plate 10 and the second reinforcing steel plate 20 are fixed in a state spaced apart from the beams or pillars of the structure using anchor bolts 40, but using the guide anchor for maintaining the gap Adjusting and fixing the reinforcing steel plate to be spaced apart at regular intervals from the beam or pillar (S50);

And grouting the space between the beams or pillars of the structure and the reinforcing steel plate (S60).

According to the present invention, a seismic reinforcing structure using a steel sheet with a guide anchor for maintaining a gap and a construction method thereof can significantly shorten the construction period by minimizing the welding area for joining between the reinforcing steel plates, and can prevent fires caused by on-site welding. The risk can be reduced significantly,

Through the guide anchor for maintaining the gap, the separation distance between the concrete pillar and the reinforcing steel plate is kept constant, and the filling material is filled with a uniform thickness in the separation space to perform a seismic reinforcement construction. high portential.

1: Seismic reinforcement structure
10: 1st reinforcing steel plate
20: Second reinforcement steel sheet
30: Guide anchor for spacing
40: anchor bolt
50: filling material
100: structure

Claims (6)

It is a spaced apart at a predetermined distance from the outer surface of the beam or pillar structure 100, and one side is open '

The first steel plate for reinforcement 10 having a plate-shaped upper cross-section,
Bonding to the open rim of the first reinforcing steel sheet 10, the second reinforcing steel sheet 20 in the form of a rectangular plate,
Intervals that are installed on the inner surfaces of the first reinforcing steel sheet 10 and the second reinforcing steel sheet 20, to regularly control the separation distance from the outer circumferential surface of the structure 100 to the steel sheets 10 and 20 Retention guide anchor 30,
In order to fix the steel plates 10 and 20 spaced a predetermined distance from the outer surface of the structure 100 by the guide anchor 30 for maintaining the gap, the structure 100 is penetrated through the steel plates 10 and 20 Anchor bolt (40) to form a combination with a pre-drilled fixing hole,
The structure 100 and the steel plates 10 and 20 are fastened by the anchor bolt 40, and spaced between the structure 100 and the steel plates 10 and 20 by the guide anchor 30 for maintaining the gap. Including the filling material 50 to fill the formed space,

The filling material 50 is a synthetic fiber of polyvinyl alcohol (PVA) having a specific gravity of 1.3, a length of 12 to 14 mm, a diameter of 35 to 43 µm, a tensile strength of 1,400 to 1,800 MPa, and an elastic modulus of 35 to 39 GPa. %, Water 18.0 ~ 26.0 wt%, Cement 20.0 ~ 28.0 wt%, Fumed Silica 0.8 ~ 3.0 wt%, Fly Ash 14.5 ~ 23.5 wt%, Particle Size 2 ~ 5 Μm limestone (CaCO ₃ ) Composite cement (a) 23.0 ~ 38.0 wt composed of fine powder filler 30.1 ~ 35.3 wt% and naphthalene-based or melamine-based super plasticizer 0.1 ~ 0.3 wt% 100.0 wt% %;
Sand (b) 25.2-35.0 wt%;
A crack inhibitor consisting of 45.0 to 55.0 wt% of Portland cement and 100.0 wt% of dolomite powder 45.0 to 55.0 wt% (c) 3.8 to 11.5 wt%;
Any one or two cement-based injection materials selected from micro cement or colloid cement having a particle size of 1.0 to 24.0 µm (d) 2.5 to 10.5 wt%;
SiO ₂ 1.0 ~ 4.2 wt%, A1 ₂ O ₃ 20.2 ~ 26.7 wt%, Fe ₂ O ₃ 0.3 ~ 1.5 wt%, CaO 38.2 ~ 47.2 wt%, MgO 0.1 ~ 0.4 wt%, SO ₃ 25.1 ~ 33.7 wt% 0.50.0 to 5.5 wt% of the rapid injection material (e) having a powder composition of 100.0 wt% (cm 2 / g) 5,000;
Water (f) 30.0 ~ 45.0 wt%; consisting of (a + b + c + d + e + f) seismic reinforcement structure using a steel plate with a guide anchor for maintaining the gap, characterized in that consisting of.



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