KR100831568B1 - Fence structure with opening and shutting gate of preventing falling stones and method constructing the fence as above - Google Patents

Abstract

An opening and closing type fall prevention fence structure and a construction method of an opening and closing type fall prevention fence structure are provided to perform installation work easily between a post and a post by assembling a wire rope of an assembly structure to a fixing structure of an H-beam post, to perform dismantlement work effectively by dismantling an opening and closing door for removing falling stones and a wire rope of an assembly structure easily, to improve efficiency at a falling stone removal work by widening a working space, to absorb the kinetic energy of falling stones by reaction effectively by adding tensile force to a wire rope of an assembly structure with a turnbuckle, and to remove falling stones accumulated on a pocket of a concrete retaining wall by dismantling an opening and closing door for removing falling stones freely. An opening and closing type fall prevention fence structure comprises an opening and closing door(50) for removing falling stones, a fixing structure(10) of an H-beam post, a wire rope(20) of an assembly structure or a steel bar, wherein the opening and closing door for removing falling stones is composed of a horizontal frame(52) and a vertical frame(54), and a wire net(40) is installed in the frames. The fixing structure of the H-beam post is fixed with a connection plate(14) by using a fastening bolt(16) or welding to form a space while a fixing member(12) covers an H-beam post. The wire rope of an assembly structure is connected with a connection member having a hook(222) and a connector(224), wherein the wire rope is connected to the connector. A construction method of an opening and closing door for removing falling stones by an opening and closing type fall prevention fence structure comprises the steps of: installing fixing members to two posts where an opening and closing door for removing falling stones is to be installed; connecting a connection member having a connector and a hook to a wire rope of an assembly structure; inserting the hook of the wire rope to a space of a fixing structure of an H-beam post; and fixing an opening and closing door for removing falling stones to the wire rope using a wire(42) or a ∪-bolt.

Description

Fence structure with opening and shutting gate of preventing falling stones and method constructing the fence as above}

The present invention relates to an open-type rockfall prevention fence structure and a method for constructing the same.

The rockfall prevention fence is an artificially installed facility that prevents falling rocks from the exposed rock on the cut site to the road and is usually installed to prevent traffic flow and risk factors. Falling rocks are inevitable from the exposed rock on the cut slope. The role of the rockfall fence is twofold. One role is to reduce falling kinetic energy by causing falling rocks to collide with the falling rock fences, and at the same time to induce falling into the falling rock fences while preventing falling rocks on the road where the vehicle passes. .

Rockfalls that fall inside a rockfall prevention fence accumulate. If you do not remove it, the problem of breaking the pillar of the falling rock fence, as well as the wire mesh or wire rope occurs.

In order to remove the falling rocks, it is important to install the rock-falling opening doors at regular intervals of the falling rocks.

The technical field of the present invention is a technique for installing a rock-falling door to the rockfall prevention fence.

The causes of falling rocks from exposed rock on cut slopes are due to weathering, rainfall or tree roots. The loosening of the discontinuities increases, causing rockfall.

There are two ways to prevent rockfall.

One is a non-pocket type rock fall protection system and the other is a pocket type rock fall protection system.

Non-pocket rockfall prevention net method is to suppress the kinetic energy of the rock by holding the loose rock piece between the incision plane and the net using the friction of the wire mesh and the incision surface.

The pocket type rockfall prevention net system forms a pocket with props, wire ropes and wire mesh and impacts rockfall with kinetic energy against the wire mesh to reduce the kinetic energy of the rockfall and prevent the rockfall from protruding toward the road. It's a way to induce it.

The location of the falling rock is 2/3 of the height of the falling rock fence, and the falling direction of the falling rock is perpendicular to the falling rock fence.

Rockfall prevention fence of the present invention belongs to the pocket type rockfall prevention net system.

Rockfall protection fences are widely used in Korea and are composed of H-beam struts, wire ropes and wire mesh.

Rockfall is induced to fall inside the rockfall barrier and accumulates high over time.

When the accumulated rock falls on the pillar, wire mesh or wire rope of the rockfall prevention fence, the weight of the rock falls on the pillar, wire mesh or wire rope. If the degree of pressurization is severe there is a problem that the wire mesh or wire rope is broken. If it is worse, the props will bend.

As such, the rockfall prevention fences are designed to induce rockfalls and accumulate inside the lower part. Therefore, rockfall prevention fences should be removed in order to maintain and manage the rockfall prevention fences.

However, existing rockfall prevention fences do not have a working space to remove rockfall even if rockfall accumulates. The rockfall prevention fence is fixed with a wire mesh and there is no opening door.

Even if there is an opening door, the space between the wire ropes is the working space because the door is installed with the wire rope installed at 20 ~ 30cm fixed to the prop. This amount of space is not enough to remove rockfall, so it cannot be removed.

The present invention forms a wire rope of the prefabricated structure to be assembled to the fixed structure of the H-shaped steel support, so that the installation work between the support and the support is easy, as well as the dismantling of the opening and closing door and the prefabricated structure of the rock structure during the rock removal. Its purpose is to improve the efficiency of rockfall removal by not only efficient dismantling work but also wider working space, and by applying tension to the prefabricated wire rope by turnbuckle, Another purpose is to be able to absorb efficiently.

In addition, the opening and closing rockfall prevention fence structure is formed as a prefabricated structure to free the dismantling of the opening and closing door for rockfall removal, and has another purpose to simplify the maintenance and management of rockfall removal accumulated in the pocket of the concrete retaining wall.

The wire rope of the prefabricated structure used here is the same as the assembly of the wire rope of the prefabricated structure even if it is replaced by a steel bar, and at the same time, the concept of efficiently absorbing the kinetic energy of rockfall by reaction is also the same. Therefore, the wire rope of the prefabricated structure will be used in the concept including the steel bar.

The rockfall prevention fence structure 100 of the present invention is composed of a wire rope 20 or a steel bar 30 of a prefabricated structure, a fixed structure 10 of an H-shaped steel post for inserting and fixing it, and a wire mesh 40.

The pillar of the rockfall prevention fence is usually installed on the concrete retaining wall (60). As shown in FIG. 2, a pocket 62 is formed between the concrete retaining wall 60 and the female cut surface. Rockfall is formed to accumulate in the pocket 62. In order to maintain and manage rockfall prevention fences, it is to remove rockfall accumulated periodically. The removal of rockfall prevents the weight of accumulated rockfall from working on the rockfall prevention fence.

Thus, in order to remove the accumulated rockfalls, it is desirable and efficient to install the rock-falling opening / closing doors 50 at regular intervals on the rockfall prevention fence.

Referring to the open-type rockfall prevention fence structure 100 of the present invention as follows.

1) Opening door for removing rockfall (50)

 ⒜ Installation location

Opening and closing door 50 for rockfall removal of the present invention is installed between the struts of the rockfall prevention fence.

The pillar is H-shaped steel and should be installed at intervals of 2-3m. A wire rope is installed and fixed in the horizontal plane between the support post and the support post. In principle, the wire rope should be installed at intervals of 20 to 30 cm. Wire rope is a supporting material for supporting wire mesh. The kinetic energy of the rockfall decreases with the collision of the wire mesh. The energy transmitted to the wire mesh is transferred to the wire rope, which is then transferred to the prop and absorbs the kinetic energy while supporting the impact load of the kinetic energy.

 ⒝ structure

Rockfall removal opening and closing door 50 was composed of a horizontal frame 52 and a vertical frame 54. The space formed by the horizontal frame 52 and the vertical frame 54 is covered with a wire mesh 40. The length of the horizontal frame 52 is equal to the length between the posts. Since the length of the horizontal frame 52 is long, the vertical frame 54 is installed in the middle to prevent sagging of the horizontal frame 52.

 개폐 The relationship between the opening and closing door (50) for rockfall removal and the prefabricated wire rope (20)

The wire rope where the rock-falling opening and closing door 50 is installed is not a fixed type but a prefabricated structure.

First, the wire rope 20 of the prefabricated structure is assembled to the fixed structure 10 of the H-shaped steel post. (See Figure 5a)

The opening and closing door 50 for removing the rockfall is fixed to the wire rope 20 of the prefabricated structure that is firmly assembled to the fixing structure 10 of the H-beam supporter with the wire 42 or the pin bolt 44. (See Fig. 5c. )

As long as it is not the wire 42 or the pin bolt 44, as long as it can fix the rock-opening door 50 for rockfall removal to the wire rope 20 of a prefabricated structure, it may be any.

Hereinafter, the fixing of the wire 42 will be described. Even if the wire 42 is described as a reference, it is needless to say that the shock bolt 44 is also included here.

The rock-falling opening and closing door 50 is fixed to the wire rope 20 of the prefabricated structure by the wire 42. Rockfall removal opening and closing door 50 is suspended on the wire rope 20 of the prefabricated structure by the wire (42). If only the wire 42 is loosened, the opening and closing door 50 for removing the rockfall cannot be suspended from the wire rope 20 of the prefabricated structure.

In other words, when the wire 42 fixed to the wire rope 20 of the prefabricated structure is released to remove the rockfall, the opening and closing door 50 for removing the rockfall is dismantled from the wire rope 20 of the prefabricated structure. When dismantling the wire rope 20 of the prefabricated structure inserted into the fixed structure 10 of the H-shaped steel pillar is a structure that can obtain a work space for removing rockfall.

Opening and closing the door for removing rockfall 50 and the wire rope 20 of the prefabricated structure is tied to the wire 42 and fixed. The contact with the wire rope 20 of the prefabricated structure may be a horizontal frame 52 of the rock-falling opening and closing door 50 or may be a wire mesh 40 of the rock-falling opening and closing door 50. It does not matter wherever the fixation of the opening / closing door 50 for rockfall removal is certain. Wire mesh 40 and wire rope should be bound more than 20% of span length.

Rockfall removal opening and closing door 50 is a structure supported by the wire rope 20 of the prefabricated structure fixed by the wire (42).

2) Fixing structure 10 of H-shaped steel post for assembling wire rope 20 of prefabricated structure

The fixing structure 10 of the H-shaped steel post at the position where the rock-falling opening / closing door 50 is installed is made of a structure in which the wire rope 20 of the prefabricated structure can be easily assembled and firmly fixed.

The fixing member 12 is provided in the form of surrounding the H-beam support. Fixing member 12 is a structure that is fastened to the fastening bolt 16 by the connecting plate (14). The fastening bolt 16 may also be fixed by welding. A space 18 is formed in the fixing structure 10 of the H-shaped steel post by the fixing member 12. The hook portion 222, 32 of the wire rope 20 or the steel bar 30 having a prefabricated structure is inserted into the space 18.

3) Prefabricated Wire Rope (20)

Wire rope 20 of the prefabricated structure should be easy to assemble the H-shaped steel strut structure (10). In addition, the wire rope 20 having a prefabricated structure is effective in absorbing impact loads of rockfall having kinetic energy as long as it is easy to impart tensile force.

Rockfall's kinetic energy is reduced by colliding with a rockfall prevention fence. The mechanism by which rockfall prevention fences absorb rockfall kinetic energy is the absorption by reaction. The magnitude of the reaction is proportional to the magnitude of the tensile force of the wire rope 20 of the prefabricated structure. That is, the looser the wire rope 20 of the prefabricated structure is, the smaller the absorption capacity due to reaction becomes. On the contrary, the tighter the wire rope 20 of the prefabricated structure is, the larger the reaction absorption capacity becomes.

Both ends of the wire rope 20 of the prefabricated structure is connected to the connecting member 22 having a hook portion 222 at the front end and a connecting ring portion 224 at the rear end.

In addition, the steel bar 30 may be used instead of the wire rope in the wire rope 20 of the prefabricated structure. (See FIG. 6) Since the steel bar 30 is a single united member, unlike the wire rope 20 of the prefabricated structure, the connection of the rear end is performed. There is no annulus 224. The steel bar 30 has only the hook portion 32 of the tip.

4) Connection of the turnbuckle (26)

Whether the wire rope 20 or the steel bar 30 of the prefabricated structure having the connecting member 22 is provided with a large tensile force to increase the ability to absorb the impact load of the large kinetic energy rockfall. This is because the absorption capacity of the impact load is proportional to the magnitude of the tensile force.

The turnbuckle 26 is used in the present invention to impart a tensile force.

In the case of the wire rope 20 and the steel bar 30 of the prefabricated structure, the position where the turnbuckle 26 is connected is as follows. (See Figures 7 and 8)

 경우 for wire rope 20 of prefabricated structure with connecting member 22 (see FIG. 7)

In the case of the wire rope 20 of the prefabricated structure, the turnbuckle 26 is inserted between the hook portion 222 and the connecting ring 224 of the connecting member 22. Spiral portions 222a and 224a are formed in the hook portion 222 and the connecting ring portion 224 at the position where the turnbuckle 26 corresponds. The length of the wire rope 20 of the prefabricated structure can be shortened by the length of the spiral portions 222a and 224a. As the length of the wire rope 20 of the prefabricated structure is shortened, tensile force is applied to the wire rope 20 of the prefabricated structure.

 강 In case of steel bar 30 having hook portion 32 formed on tip (see Fig. 8)

In the case of the steel bar 30 having the hook portion 32 formed at the tip, the turnbuckle 26 is installed between the center of the steel bar 30, that is, between the steel bar 30 and the steel bar 30. A spiral portion 34 is formed at an end portion of the steel bar 30 into which the turnbuckle 26 is inserted.

5) Assembly of the fixed structure 10 of the H-beam strut and the wire rope 20 of the prefabricated structure

The hook portion 222 of the wire rope 20 of the prefabricated structure is inserted into the space portion 18 of the fixed structure 10 of the H-shaped steel post and assembled. Also in the case of the steel bar 30, the hook part 32 of the steel bar 302 is inserted into the space part 18 of the fixed structure 10 of the H-shaped steel pillar, and is assembled.

In the case of the prefabricated wire rope 20 or the steel bar 30 in which the turnbuckle 26 is formed, the hook portion 222 of the prefabricated wire rope 20 is first spaced in the fixed structure 30 of the H-shaped steel post. After inserting into 18, the turnbuckle 26 may be rotated to impart a tensile force. Due to the application of tensile force, the wire rope 20 of the prefabricated structure is tightened.

Summarizing the present invention open-type rockfall prevention fence structure 100 is as follows.

Opening and falling rock prevention fence structure 100 is a structure consisting of a wire rope 20 or steel rod 30 of the fixed structure 10 and prefabricated structure of the opening and closing door 50 and the H-shaped steel pillar for rockfall removal. Rockfall removal opening and closing door 50 is composed of a horizontal frame 52 and a vertical frame 54, the wire mesh 40 is installed in the frame 52, 54.

The fixing structure 10 of the H-beam support forms the space portion 18 while the fixing member 12 is firmly fixed by the fastening bolt 16 or welding together with the connecting plate 14 while the fixing member 12 surrounds the H-beam support. It is a structure.

The wire rope 20 of the prefabricated structure has a connecting member 22 connected to both ends thereof, the hook portion 222 is formed at the front end of the connecting member 22, and the connecting ring portion 224 is formed at the rear end thereof. Is a structure that is connected to the connecting portion 224 of the rear end.

In the case of the steel bar 30, the connecting member 22 is omitted and only the hook portion 222 is formed at both ends.

The turnbuckle 26 is installed between the hook part and the connecting part in the case of the wire rope 20 of the prefabricated structure, and in the case of the steel bar, it is installed in the center of the steel bar. Since the length of the wire rope 20 or the steel bar 30 of the prefabricated structure is controlled by the turnbuckle 26, the assembly with the turnbuckle 26 is made by the spiral portion.

The present invention is because the wire rope of the prefabricated structure is formed to be assembled to the fixed structure of the H-shaped steel pillar, so that the installation work between the support and the support is easy, as well as the opening and closing door and the prefabricated structure for removing the rockfall during the rockfall removal work. It is easy to dismantle the rope, so that the dismantling work is not only efficient, but the dismantling wire rope of the prefabricated structure makes it possible to use the work space widely.

In addition, it is possible to impart a tensile force to the wire rope of the prefabricated structure by the turnbuckle, and it is efficient to absorb the kinetic energy of the rockfall by reaction.

In addition, since the structure of the opening and closing rockfall prevention fence structure is prefabricated, the dismantling of the opening and closing door for removing the rockfall is free, and it is not only easy to remove rockfall accumulated in the pocket of the concrete retaining wall, but also very convenient and useful to maintain and manage it.

The procedure for constructing the opening and closing door 50 for rockfall removal by the present invention open-type rockfall prevention fence structure 100 is as follows.

⒜ the step of installing the fixing member (12) on both shores to be installed rocking door 50 for rockfall removal (see Fig. 4);

Connecting the connecting member 22 having the connecting part 224 and the hook part 222 to the wire rope 20 of the prefabricated structure (see FIG. 4);

(B) inserting the hook portion 222 of the prefabricated wire rope 20 into the space portion 18 of the fixed structure 10 of the H-shaped steel post (see Fig. 5A);

(2) fixing the opening and closing door (50) for removing the rockfall on the wire rope (20) of the prefabricated structure by the wire (42) or the bolt (44);

The assembly process is the same even if the steel bar 30 having the hook portion 32 instead of the wire rope 20 of the prefabricated structure in the step ⒝ ~ ⒞. (See Fig. 6)

If the turnbuckle 26 is installed here, the installation process is as follows.

⒜ the step of installing the fixing member (12) on both shores to be installed rocking door 50 for rockfall removal (see Fig. 4);

Connecting the turnbuckle 26 between the hook portion 224 and the hook portion 222 of the connecting member 22 connected to both ends of the wire rope 20 of the prefabricated structure (see FIG. 7);

(B) inserting the hook portion 222 of the prefabricated wire rope 20 into the space portion 18 of the fixed structure 10 of the H-beam support (see FIG. 7);

(B) rotating the turnbuckle 26 to impart tensile force to the wire rope 20 of the prefabricated structure;

(2) fixing the opening and closing door (50) for removing the rockfall on the wire rope (20) of the prefabricated structure by the wire (42) or the pin bolt (44);

Even when using the steel bar 30 having a hook portion 32 instead of the wire rope 20 of the prefabricated structure in the step ⒞ ~ 과정 the process of connecting the turnbuckle 26 and thereby applying a tensile force to the steel bar 30 Both are the same. (See Fig. 8)

Now, the operation for removing the rockfall accumulated in the back pocket portion 62 of the rockfall prevention fence of the present invention is as follows.

Rockfall removal work is the opposite of the work to install the rockfall removal opening door 50, the order is the opposite.

(B) dismantling the wire (20) or the bolt (44) fixing the rock-falling opening / closing door (50) to the wire rope (20) or the steel bar (30) of the prefabricated structure to remove the rock-falling door (50);

(B) rotating the turnbuckle 26 in reverse to release the tension applied to the wire rope 20 or the steel bar 30 of the prefabricated structure;

(B) disassembling the hook portion (32) of the wire rope (20) or the steel rod (30) of the prefabricated structure from the space portion (18) of the fixing structure (10) of the H-shaped steel support;

(C) removing the rockfall through the space portion 18 from which the opening and closing door 50 for removing the rockfall is removed; Is made of.

1 is a state diagram in which the openable rockfall prevention fence structure of the present invention is located

2 is a perspective view of the invention open-type rockfall prevention fence installed on the concrete retaining wall

3 is a perspective view of the open-type rockfall prevention fence structure of the present invention assembled

4 is an exploded perspective view of the wire rope of the fixed structure and the assembled structure of the H-shaped steel strut of the present invention.

FIG. 5A is a one-step assembly diagram of assembling a wire rope of a prefabricated structure to a fixed structure of an openable H-shaped steel post to install an opening and closing door for removing a rockfall of the present invention. FIG.

FIG. 5b is a two-step assembly diagram in which an opening and closing door for removing a rockfall of the present invention is fixed to a wire rope of a prefabricated structure by a wire; FIG.

FIG. 5C is a two-step assembly drawing fixed with pin bolts instead of wires in FIG. 5B.

6 is another embodiment in which a steel bar having a hook portion is assembled to a fixed structure of an openable H-shaped steel pillar of the present invention instead of a wire rope of a prefabricated structure.

7 is another embodiment of a prefabricated wire rope in which a turnbuckle is inserted between connecting members to give a tensile force to the prefabricated wire rope of the present invention.

8 is another embodiment of a steel rod having a hook portion in which a turnbuckle is inserted into the center of the steel rod to impart tensile force to the steel rod of the present invention.

<Description of the symbols for the main parts of the drawings>

100; Rockfall Protection Fence Structure

10; Fixed structure of H-beam strut

12; Fixing member

14; Connecting plate

16; Tightening Bolt

18; Space

20; Prefabricated Wire Rope

22; Connecting member 222; Hook portion 222a; Helix 224; Connecting part 224a; Spiral

26; Turnbuckle

30; Rod 32 ,; Hook 34; Spiral

40; Wire mesh 42; Wire 44; Ｕ bolt

50; Rockfall opening door

52; Horizontal frame 54; Vertical frame

60; Concrete retaining wall

62; Pocket part

Claims (8)

In the fence for rockfall prevention consisting of the support, the wire rope and the wire mesh, the wire rope 20 of the prefabricated structure is assembled to the fixed structure 10 of the H-shaped steel post, and the opening and closing door 50 of the prefabricated structure is installed on the wire rope 20 of the prefabricated structure. The fixing structure 10 of the H-shaped steel pillar is fixed to the spaced portion 18 while being firmly fixed by the fastening bolt 16 together with the connecting plate 140 while the fixing member 12 surrounds the H-shaped steel pillar. The wire rope 20 has a structure of forming a prefabricated structure, and a connecting member 22 is connected to both ends thereof, and a hook portion 222 is provided at the front end of the connecting member 22, and a connecting ring portion 224 is provided at the rear end thereof. While the wire rope is formed is an open-ended rockfall prevention fence structure, characterized in that consisting of a structure that is connected to the connecting portion 224 of the rear end The method of claim 1 Instead of the wire rope 20 of the prefabricated structure open and close type rockfall prevention fence structure, characterized in that using the steel bar 30 formed integrally with the hook portion 32 The method of claim 1 The turnbuckle 26 is installed between the hook portion 222 and the hook portion 224 of the wire rope 20 of the prefabricated structure, and the helix of the hook portion 222a and the hook portion 224 of the hook portion 222. Opening type rockfall prevention fence structure characterized in that the spiral coupled by the portion (224a) The method of claim 2 The turnbuckle 26 is installed in the center of the steel bar 30 and the opening and closing type rockfall prevention fence structure, characterized in that the spiral is coupled by the spiral portion 34 formed on both ends of the steel bar (30) In constructing a rockfall prevention fence consisting of shore, wire rope and wire mesh 고정 installing the fixing member (12) on both shores on which the opening and closing door (50) for removing the rockfall will be installed; Connecting the connecting member 22 having the connecting part 224 and the hook part 222 to the wire rope 20 of the prefabricated structure; Inserting the hook portion 222 of the prefabricated wire rope 20 into the space portion 18 of the fixed structure 10 of the H-shaped steel post; Fixing the rock-falling opening / closing door 50 to the wire rope 20 of the prefabricated structure by the wire 42 or the bolt 44; The method of claim 5 Method of constructing an open-ended rockfall prevention fence, characterized in that the steel bar 30 having a hook portion 32 instead of the wire rope 20 of the prefabricated structure in the step ⒝ ~ ⒞ In constructing a rockfall prevention fence consisting of shore, wire rope and wire mesh 고정 installing the fixing member (12) on both shores on which the opening and closing door (50) for removing the rockfall will be installed; Connecting the turnbuckle 26 between the hook portion 224 and the hook portion 222 of the connecting member 22 connected to both ends of the wire rope 20 of the prefabricated structure; Inserting the hook portion 222 of the prefabricated wire rope 20 into the space portion 18 of the fixed structure 10 of the H-shaped steel post; (B) rotating the turnbuckle 26 to impart tensile force to the wire rope 20 of the prefabricated structure; Fixing the rock-falling opening / closing door 50 to the wire rope 20 of the prefabricated structure by the wire 42 or the bolt 44; The method of claim 7, Method of constructing an open-ended rockfall prevention fence, characterized in that the steel bar 30 having a hook portion 32 instead of the wire rope 20 of the prefabricated structure in the ⒝ ~ ⒞ step

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