KR102123205B1 - Construction method and mounting structure of retaining wall structure using reinforcing metal and connecting metal - Google Patents

Abstract

According to the present invention, provided are a method for constructing a natural stone retaining wall by using a reinforcement support metal and a connecting metal, capable of enabling fixture securement in response to the thickness of the lower part of primary natural stone, enabling a reduction in earth pressure on a soil layer filling the rear side of natural stone, and facilitating construction in response to a change to installation intervals for natural stone, and an installation structure thereof. According to an advisable embodiment of the present invention, the method for constructing a natural stone retaining wall by using a reinforcement support metal and a connecting metal includes the following steps of: (a) leaving a reinforcement frame inserted upwards in a vertical surface, which is made by cutting a slope, by fixing the frame to the ground at a predetermined distance along the vertical surface; (b) placing primary concrete on the ground in front of the reinforcement frame to a predetermined height; (c) installing a reinforcement support metal to be fixed at a predetermined distance from the reinforcement frame to fix primary natural stone to the upper surface of the primary concrete; (d) placing the primary natural stone on the reinforcement support metal, and then, leaving the primary natural stone fixed on the reinforcement support metal; (e) placing secondary concrete such that the reinforcement support metal can be buried in the primary concrete; (f) filling the rear side of the primary natural stone with soil and rubble stone while additionally placing natural stone like stairs up to a planned height; and (g) leaving the natural stone in the uppermost part connected with the reinforcement frame through a connecting metal.

Description

Construction method and mounting structure of retaining wall structure using reinforcing metal and connecting metal}

The present invention relates to a construction method and an installation structure of a natural stone retaining wall structure using a reinforced support hardware and a connection hardware, in particular, it is possible to secure the fixing in response to the lower thickness of the primary natural stone, and to reduce the earth pressure in the soil layer filled behind the natural stone. It relates to the construction method and installation structure of a retaining wall structure of natural stone using reinforced supporting and connecting hardware to facilitate construction in response to changes in the installation interval of natural stone.

Retaining wall structures are installed on the slopes of the residential site and the foot of the mountain, forming a boundary with the road, and are constructed to prevent them from collapsing due to natural conditions such as soil pressure and rain. The retaining wall structure may be divided into a retaining wall structure using natural stone, a retaining wall structure using cement brick, or a retaining wall structure using concrete, etc., and recently, concrete is used in consideration of shortening of air and economic aspects. A retaining wall structure is constructed. However, unlike the general foothills and roadsides, when a retaining wall structure is installed on a housing site of a large-scale housing site, it is natural, such as civil engineering work and ecological landscaping, which constructs a retaining wall structure using natural stone to create an environmentally friendly appearance. It is eco-friendly and reflects the design extensively.

In general, retaining wall structures using natural stone go well with the surrounding natural environment. However, since natural stone has an atypical shape, it is not easy to stack stones. In addition, by resisting the earth pressure by the weight of natural stone, it is vulnerable to the arrival of an earthquake, and construction safety is reduced due to collapse. Therefore, there is a need for a method of constructing a retaining wall structure capable of more stably constructing an amorphous natural stone.

As the background technology of the present invention, Korean Patent Registration No. 10-0400170, a'retaining wall structure using natural stone' has been proposed. This includes a plurality of decorative stones arranged in multiple layers so that the front surface is exposed to the outside; A rear frame located at the rear of the plurality of decorative seats and installed in a vertical direction to match the heights of the plurality of decorative seats arranged in multiple layers; A plurality of support bars connecting the respective decorative seats with the rear frame to support the respective decorative seats; A bottom frame disposed buried in the lower ground of each of the decorative stones; Including anchors for interconnecting each of the decorative stones and the bottom frame to maintain stability and robustness after construction. However, the above-mentioned background technology is such that the decorative stone disposed on the bottom side is fixed to the bottom frame by passing the rubble layer through the anchor, but there is no connection control means that can cope with the change in distance between the decorative stone and the rear frame, resulting in poor workability. In addition, the method of fixing by installing the anchor at the bottom of the decorative stone also has a problem of poor workability.

Korean Registered Patent Registration No. 10-0400170

The present invention is to secure the fixed in response to the lower thickness of the primary natural stone, to allow the reduction of the earth pressure in the soil layer filled behind the natural stone, and to reinforce the support hardware to facilitate construction in response to changes in the installation interval of the natural stone and The object is to provide a construction method and an installation structure of a retaining wall structure of natural stone using a connecting hardware.

The construction method of a natural stone retaining wall structure using a reinforcement support hardware and a connection hardware according to a preferred embodiment of the present invention, (a) cut the slope and fixed the reinforcement frame to the ground at regular intervals along the vertical surface by cutting the slope. Placing it upward; (b) pouring primary concrete at a predetermined height on the ground in front of the reinforcing frame; (c) a step of installing the reinforcement support hardware at a predetermined distance from the reinforcement frame to fix the primary natural stone on the upper surface of the primary concrete; (d) placing a primary natural stone on the reinforcing support hardware side, and then fixing the primary natural stone on the reinforcing support hardware side; (e) pouring the secondary concrete so that the reinforcement supporting hardware is embedded in the primary concrete; (f) arranging additional natural stones in a stair form to a planned height while filling the soil and rubble with the back of the primary natural stone; (g) connecting the natural stone located at the uppermost side to the reinforcing frame through a connecting hardware.

In addition, in step (c), the reinforcing support hardware has a length longer than the maximum thickness of the primary natural stone and is fixed so that the lower end of the primary natural stone can be accommodated in the reinforcing support plate fixed to the primary concrete with an anchor and the reinforcing support plate. It is characterized by including a clamp bolt that clamps the lower part of the primary natural stone by being screwed to a pair of clamp brackets and a pair of clamp brackets fixed to face each other at intervals.

In addition, after the step (a), a reinforcement wire mesh is further disposed on the front surface of the reinforcing frame to reduce the earth pressure on the slope side, and the step of being fixedly installed on the reinforcing frame is further included.

In addition, in the step (g), the connecting hardware is an extended anchor with one end fixed to the top natural stone, a fixed bolt with one end fixed to the reinforcement frame, and the other end of the extended anchor and the other end of the fixed bolt by screwing on one axis. Characterized in that it comprises a; connection nut for adjusting the length of the connection to adjust the length of the connecting hardware.

In addition, in the step (f), it is characterized in that it further comprises the step of connecting the Z-shaped reinforcement hardware up and down to the adjacent natural stone whenever the natural stone is extended upward through an anchor.

In addition, the Z-type reinforcing hardware is a natural stone support plate supporting the lower surface of the natural stone, a lower natural stone connecting plate that is bent downward at one end of the natural stone support plate and fixed to the lower natural stone, and is bent upward at the other end of the natural stone support plate to be an anchor to the natural stone. It consists of a fixed upper natural stone connecting plate; The Z-type reinforcement hardware is characterized in that slit holes are formed in the natural stone support plate to dissipate seismic energy through plastic deformation.

According to the construction method and installation structure of the natural stone retaining wall structure using the reinforcement support hardware and the connection hardware of the present invention, it is possible to secure the fixing in response to the lower thickness of the primary natural stone by the reinforcement support hardware mounted on the concrete. In addition, construction is possible in response to changes in the installation gap between the natural stone and the reinforcing frame by the connecting hardware installed on the uppermost natural stone. In addition, the reinforcing hardware installed on the reinforcing frame side can reduce the earth pressure in the soil layer filled behind the natural stone, thereby improving the construction safety of the retaining wall structure.

The following drawings attached in this specification are intended to illustrate preferred embodiments of the present invention, and serve to further understand the technical idea of the present invention together with the detailed description of the present invention, so the present invention is only described in the accompanying drawings. It should not be interpreted as limited.
1 to 4a is a flow chart of a retaining wall structure according to an embodiment of the present invention.
Figure 4b is a state diagram of the Z-type reinforcement hardware is additionally installed on the retaining wall structure according to the present invention.
Figure 4c is a perspective view of the Z-shaped reinforcement hardware shown in Figure 4b.
Figure 5a is a state in which the primary natural stone according to the invention is fixed to the reinforcement support hardware.
5B is a plan view of FIG. 5A.
Figure 6 is an installation state of the connecting hardware applied to the present invention.
7 and 8 is a side view and a front view of the retaining wall structure showing the additional installation state of the reinforcing wire mesh according to the present invention.

The present invention will be described in detail below with reference to the embodiments presented in the accompanying drawings, but the presented embodiments are illustrative for a clear understanding of the present invention and the invention is not limited thereto.

Retaining wall structure 100 according to the present invention is a reinforcement frame 20, the lower end of which is penetrated a certain depth to the ground 10 as shown in Figure 4a is installed along the cut vertical surface of the slope, 1 poured into the ground 10 After the reinforcement support hardware 40 fixed to the car concrete 12 as an anchor is installed in a number of directions at a certain distance from the reinforcement frame 20, after the lower end of the natural stone 30 is fixed to the reinforcement support hardware 40 After the additional amount of natural stone 30 is stacked in a stepwise manner, the uppermost natural stone 30 has a structure connected to the upper end of the reinforcement frame 20 through a connecting hardware 50. At this time, the natural stone 30 adjacent up and down may be connected to the Z-type reinforcement hardware 70 through the anchor 72 as shown in FIG. 4B. Here, the configuration of the reinforcement support hardware 40, the connection hardware 50 and the Z-type reinforcement hardware 70 will be described later in the construction order below.

Construction of reinforcement frame 20

First, as shown in FIG. 1, the reinforcing frame 20 is fixed to the ground 10 at regular intervals along the vertical surface by cutting the slope and cutting the slope to the upper surface. In the present embodiment, the reinforcing frame 20 uses steel having an H-shaped cross section, but is not limited thereto. At this time, the upper end of the reinforcement frame 20 is installed so as not to exceed the maximum height of the natural stone 30 located at the top.

Pour of primary concrete (12)

Then, as shown in FIG. 1, the primary concrete 12 is poured into the ground 10 at a predetermined height toward the front of the reinforcement frame 20. The pouring thickness of the primary concrete 12 may be determined in consideration of the anchor depth of the reinforcement support hardware 40 to be described later. That is, concrete is poured at least thicker than the depth of the anchor of the reinforcement support hardware 40.

Installation of reinforcement support hardware (40)

Next, as shown in FIG. 2, the reinforcement support hardware 40 is fixedly installed at a predetermined distance from the reinforcement frame 20 to fix the primary natural stone 30 on the upper surface of the primary concrete 12. Reinforcing support hardware 40 may be installed for each one natural stone (30).

2 and 5, the reinforcing support hardware 40 is a reinforcing support plate 41 having a length longer than the maximum thickness of the primary natural stone 30 and the primary natural stone 30 in the reinforcing support plate 41. A clamp bolt (43) that is screwed to a pair of clamp brackets (42) and a pair of clamp brackets (42) fixed to face each other at regular intervals to accommodate the lower end, and clamps the lower part of the primary natural stone (30). ). An extended pressure plate 44 may be further installed at the tip of the clamp bolt 43 to increase the area of the tightening pressure applied to the natural stone 30. The reinforcement support hardware 40 is installed by fixing the reinforcement support plate 41 to the primary concrete 12 with an anchor 45.

Fix the primary natural stone (30) to the reinforcement support hardware (40) side

Then, after placing the primary natural stone 30 on the side of the reinforcing support hardware 40 as shown in FIG. 3, the primary natural stone 30 is fixed to the side of the reinforcing support hardware 40.

At this time, the natural stone 30 is placed on the upper surface of the reinforcement support plate 41, the lower end is located between the pair of clamp brackets 42, firmly fixed to the reinforcement support hardware 40 by the clamping force of the clamp bolt 43 Is fixed. Accordingly, the primary natural stone 30 is firmly fixed to the primary concrete 12 layer by the fixing support force of the reinforcing support hardware 40 to prevent collapse of the retaining wall structure 1000 during the earthquake.

Pour of secondary concrete (14)

Next, as shown in FIG. 3, the secondary concrete 14 is poured so that the reinforcement support hardware 40 is embedded in the primary concrete 12. Therefore, even if the reinforcement support hardware 40 is installed, the damage of the aesthetics of the retaining wall structure 1000 is eliminated.

Stacking of natural stones (30) and backfilling

Then, as shown in FIG. 4, the natural stone 30 is additionally arranged to be in the form of a staircase up to a planned height while filling the soil 39 or the soil and rubble with the rear of the primary natural stone 30. At this time, the natural stone 30 that is disposed in a relatively neighboring upper portion is to be overlaid at a certain depth behind the upper end of the natural stone 30 located directly below.

As described above, in the process of extending the natural stone 30 upward, the Z-type reinforcement hardware 70 may be used as shown in FIG. 4B. At this time, the Z-shaped reinforcing hardware 70 is connected to the adjacent natural stones 30 and 30 through the anchors 72, respectively. The Z-shaped reinforcement hardware 70 may be made of steel. The Z-shaped reinforcement hardware 70 includes a natural stone support plate 701, a lower natural stone connection plate 702 bent downward at one end of the natural stone support plate 701, and an upper natural stone connection plate 703 bent upward at the other end of the natural stone support plate 701. ).

At this time, a slit hole 701a may be further formed in the natural stone support plate 701 so as to dissipate seismic energy by plastic deformation in the Z-type reinforcement hardware 70 as shown in FIG. 4C.

Connect the top natural stone 30 to the reinforcement frame 20

Then, as shown in Figure 4a, the natural stone 30 located at the uppermost side is connected to the reinforcement frame 20 through the connecting hardware 50.

Here, as shown in FIG. 6, the connecting hardware 50 has an extended anchor 51, one end of which is fixedly installed on the top-side natural stone 30, a fixing bolt 52 of which one end is fixed on the side of the reinforcement frame 20, and an extended anchor ( It includes a connection nut 53 for adjusting the length of the connecting hardware 50 by connecting the other end of the 51 and the other end of the fixing bolt 52 by screw fastening on one axis.

Therefore, even if a distance change between the top natural stone 30 and the reinforcing frame 20 occurs, the connection between the top natural stone 30 and the reinforcing frame 20 through the operation of the connecting nut 53 for adjusting the length of the connecting hardware 50 side You can try.

The natural stone retaining wall structure 1000 thus constructed is fixed through the reinforcement support hardware 40 anchored to the concrete 12 layer where the primary natural stone 30 is first poured on the ground 10, and is primary Stable construction between the natural stones 30 as well as the upper natural stones 30 can be completed, and the collapse of the natural stones 30 can be prevented even when an earthquake arrives.

In addition, the clamp bolt 43 installed in the reinforcement support hardware 40 according to the lower thickness of the natural stone 30 can accommodate the lower portion of the natural stone 30 through rotational transport, thereby facilitating the installation and fixation of the natural stone 30. can do.

In addition, since the connecting hardware 50 is used, the installation stability of the natural stone is increased by connecting and constructing the uppermost natural stone 50 to the reinforcing frame 20.

Meanwhile, as shown in FIGS. 7 and 8, the reinforcement frame 20 After construction, the reinforcing wire mesh 60 may be further disposed on the front surface of the reinforcing frame 20 to reduce slope pressure on the rear side of the slope side and fixedly installed on the reinforcing frame 20. The reinforcing wire mesh 60 may be fixed to the reinforcing frame 20 using U bolts. When the reinforcing wire mesh 60 is installed in this way, the earth pressure (main earth pressure) is reduced to increase the construction stability of the natural stone retaining wall structure 1000.

In addition, when the Z-type reinforcement hardware 70 is constructed as shown in FIG. 4B, the coupling between the natural stones 30 vertically disposed is integrated, and at the same time, the natural stone 30 is connected to the reinforcement frame 20 through the connection hardware 50. Since it has a triangular structure, a more stable natural stone retaining wall structure 1000 is constructed to improve seismic performance.

The present invention has been described in detail with reference to the presented embodiments so far, but those skilled in the art can make various modifications and modified inventions without departing from the technical spirit of the present invention with reference to the presented embodiments. will be. The present invention is not limited by such modified and modified inventions, but is limited by the appended claims.

12: primary concrete
20: reinforcement frame
30: natural stone
40: reinforcement support hardware
50: connecting hardware
60: reinforced wire mesh
70: Z-type reinforcement hardware

Claims (8)

(a) cutting the slope by placing the reinforcement frame 20 on the cut vertical surface at a predetermined distance along the vertical surface and fixing it to the ground 10 to deposit it upward;
(b) pouring the primary concrete 12 at a predetermined height on the ground 10 in front of the reinforcing frame 20;
(c) a step of fixedly installing the reinforcement support hardware 40 at a certain distance from the reinforcement frame 20 to fix the primary natural stone 30 on the upper surface of the primary concrete 12;
(d) placing a primary natural stone 30 on the side of the reinforcing support hardware 40 and fixing the primary natural stone 30 on the side of the reinforcing support hardware 40;
(e) pouring the secondary concrete 14 so that the reinforcement support hardware 40 is embedded in the primary concrete 12;
(f) arranging the natural stone 30 to be in the form of a staircase to the planned height while filling the soil and rubble with the rear of the primary natural stone 30;
(g) connecting the natural stone 30 located at the uppermost side to the reinforcing frame 20 through a connecting hardware 50; includes,
In the step (c), the reinforcement support hardware 40 has a length longer than the maximum thickness of the primary natural stone 30, and the reinforcement support plate 41 is fixed to the primary concrete 12 with an anchor 45, reinforcement The primary natural stone is screwed to a pair of clamp brackets 42 and a pair of clamp brackets 42, which are fixed to face each other at regular intervals so that the lower end of the primary natural stone 30 is accommodated in the support plate 41. (30) Construction method of a natural stone retaining wall structure using a reinforcement support hardware and a connection hardware, characterized in that it comprises a clamp bolt (43) for clamping the lower portion. delete According to claim 1,
After the step (a), characterized in that it further comprises a step of being fixedly installed on the reinforcing frame 20 by further arranging the reinforcing wire mesh 60 on the front surface of the reinforcing frame 20 to reduce the earth pressure on the slope side and the rear side. Construction method of retaining wall structure of natural stone using reinforced supporting hardware and connecting hardware. According to claim 1,
In the step (g), the connecting hardware 50 is an extended anchor 51 having one end fixedly installed on the uppermost natural stone 30, a fixed bolt 52 fixed at one end to the reinforcement frame 20, and an extended anchor ( It is connected to the other end of the fixing bolt 52 and the other end of the fixing bolt 52 by screw fastening on one axis to adjust the length of the connecting hardware 50, the connection nut 53 for adjusting the length; Construction method of natural stone retaining wall structure using iron. According to claim 1,
In step (f), the step of connecting the Z-shaped reinforcement hardware 70 to the adjacent natural stones 30 and 30 through the anchor 72 is further included whenever the natural stone 30 is extended upward. Construction method of a natural stone retaining wall structure using a reinforcement support hardware and a connecting hardware, characterized in that. The method of claim 5,
The Z-shaped reinforcement hardware 70 is a natural stone support plate (701) supporting the lower surface of the natural stone (30), bent downward from one end of the natural stone support plate (701), and the lower natural stone connecting plate (32) fixed by an anchor to the lower natural stone (30) 702), is composed of an upper natural stone connecting plate 703 that is bent upward at the other end of the natural stone support plate 701 and fixed to the natural stone 30 as an anchor;
The Z-type reinforcement hardware 70 is constructed of a natural stone retaining wall structure using reinforcement support hardware and connecting hardware, characterized in that a slit hole 701a is formed in the natural stone support plate 701 to dissipate seismic energy by plastic deformation. Way. The reinforcement frame 20 with a lower depth penetrated to the ground 10 along the cut vertical surface of the slope, and a reinforcement support hardware fixed as an anchor to the primary concrete 12 placed on the ground 10 ( 40) The reinforcement frame 20 is installed in a number of directions at a certain distance, and the lower end of the natural stone 30 is fixed to the reinforcement support hardware 40, and a certain amount of natural stone 30 is additionally stacked on top of each other in a stepwise manner. After the top natural stone 30 is connected to the top of the reinforcement frame 20 through the connecting hardware 50,
The reinforcing support hardware 40 has a predetermined interval so that the lower end of the primary natural stone 30 can be accommodated in the reinforcing support plate 41 and the reinforcing support plate 41 having a length longer than the maximum thickness of the primary natural stone 30. It consists of a pair of clamp brackets 42 fixed to face each other and clamp bolts 43 which are respectively screwed to the pair of clamp brackets 42 and clamp the lower portion of the primary natural stone 30;
The connecting hardware 50 has an extended anchor 51, one end of which is fixedly installed on the top side natural stone 30, a fixing bolt 52 of which one end is fixed on the side of the reinforcing frame 20, and the other end of the extended anchor 51. Reinforcing support hardware and a natural stone retaining wall using connecting hardware, characterized in that it consists of; a connecting nut (53) for adjusting the length of the connecting hardware (50) by connecting the other end of the fixing bolt (52) by screwing on one axis. Structure of the structure. The method of claim 7,
Up and down neighboring natural stone 30 is connected to the Z-shaped reinforcement hardware 70 through the anchor 72;
The Z-shaped reinforcement hardware 70 is a natural stone support plate (701) supporting the lower surface of the natural stone (30), bent downward from one end of the natural stone support plate (701), and the lower natural stone connecting plate (32) fixed by an anchor to the lower natural stone (30) 702), is composed of an upper natural stone connecting plate 703 that is bent upward at the other end of the natural stone support plate 701 and fixed to the natural stone 30 as an anchor;
The Z-type reinforcement hardware 70 has a slit hole 701a formed in the natural stone support plate 701 to dissipate seismic energy through plastic deformation, and the installation of a natural stone retaining wall structure using a reinforcement support hardware and a connection hardware rescue.

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