WO2018105959A1

WO2018105959A1 - Horizontal support force reinforcement and control system of guardrail installed on slope, horizontal support force reinforcement and control structure of guardrail installed on slope, and guardrail installation method using same

Info

Publication number: WO2018105959A1
Application number: PCT/KR2017/014015
Authority: WO
Inventors: 김민수
Original assignee: 김민수
Priority date: 2016-12-06
Filing date: 2017-12-01
Publication date: 2018-06-14
Also published as: KR101737470B1

Abstract

The present invention reinforces, with a horizontal support force reinforcement structure, a shortage of a horizontal support force of a guardrail pillar caused by a "guardrail installation width at a banking section of a slope" being typically formed narrower than a prescribed tolerance, and at the same time allows an impact load to be absorbed by the horizontal support force reinforcement structure and allows absorption due to bending deformation to precede absorption due to reaction, thereby preventing risk to life due to an initial impact reaction force, as well as significantly reducing the magnitude of the reaction force due to the reaction, which is a main cause of subsequent primary and secondary accidents. In addition, the present invention has a simple horizontal support force reinforcement structure, which makes it easy to repair and newly install a guardrail, thereby making said installation efficient and economical.

Description

Horizontal support reinforcement and control system of guard rail installed on slope, and horizontal support reinforcement and control structure of guard rail installed on slope, and guardrail installation method using the same

The present invention relates to a horizontal support reinforcement and control system of the guard rail provided on the slope, and a horizontal support reinforcement and control structure of the guard rail installed on the slope, and a guard rail installation method using the same. The deflection of the horizontal support capacity of the guardrail support caused by being formed narrower than the specified allowance is reinforced by the horizontal support structure, and at the same time, the impact load is absorbed by the horizontal support structure, but due to the bending deformation. Absorption is preceded by reaction, thereby preventing the risk of life due to the initial impact reaction force, while significantly reducing the magnitude of reaction force caused by reaction, which is the main culprit of the subsequent first and second accidents, as well as horizontal support structure. Is simple, so it is easy to reinforce and repair guard rails. The invention is effective and one is to be economical.

In addition, the magnitude of 1/2 the impact load distributed to the impact reaction support and the control member in the process of reducing the initial impact load by the bending deformation of the impact load distribution and the bending absorbing member is followed by the first and second accidents. When the magnitude | size of the reaction force which causes the pressure is exceeded and this limit is exceeded, the control part of an impact reaction support and a control member is broken, and the invention is made to prevent excess reaction force in advance.

In general, road surface water is drained by sideways installed at the edge of the roadway. There are L-shaped, U-shaped, V-shaped, etc., but mainly the L-shaped side mouth is widely used (see Fig. 1).

The L-shaped side opening 20 includes a drain 21 and a side wall 22 which are in contact with the surface of the road 10.

As shown in FIG. 1, the side opening 20 is installed along the road 10.

Generally, roads are designed along mountainous regions with relatively low land prices. The higher areas are cut and the lower areas are filled. In general, the earthwork volume of cut soil is designed to balance each other.

The side opening is installed at a position close to the fill slope as shown in FIG. The side opening is located between the road and the slope. In addition, a guardrail is provided between the side opening and the slope. Since the width between the side port and the slope is narrow and the guard rail is provided therebetween, the installation width between the guard rail and the slope becomes narrower (see FIGS. 2B and 3A). As such, the 'guard rail installation width of the fill section' (hereinafter referred to as 'guard rail installation width') is narrow and is a slope, so the horizontal support force due to the earth pressure of the guard rail support is insufficient. The narrow “guard rail installation width” is thought to be for the economic feasibility of road construction (land work costs, compensation costs, etc.).

According to the regulations of the Ministry of Land, the flat road guardrail, the flat ground must be secured at least 60cm behind. This is to secure sufficient horizontal support force by earth pressure of the shore.

However, there are no provisions of the Ministry of Land, Infrastructure, and Welfare on slopes of fill sections. Based on the flat, it is thought that at least 60 cm of back ground pressure should be ensured on the slope of the fill section.

Most of the major accidents on the slopes of embankments were found to be due to the lack of bearing capacity of guardrail supports due to earth pressure behind the props. The reason is that the width of the installation behind the struts is not at least 60cm. The reason for the crash of the Incheon Bridge bus in the second Gyeongin Expressway in July 2010 is also the cause.

The horizontal support capacity of guardrail support is required to secure horizontal support of 45.0KN on flat roads, while securing horizontal support of at least 90% (40.5KN) and up to 120% (54.0KN). .

At the maximum horizontal bearing capacity (54.0 KN), the allowance for the props to be pushed out of the ground is 35 cm.

On the other hand, as shown in Fig. 2b, since the installation width of the guard rail support is narrow and it is close to the slope surface of the fill area, the ground cannot be properly grounded. Less than 120%) is not satisfied.

The primary reasons why guardrails installed on slopes in fill sections do not meet the requirements of the Ministry of Land, Infrastructure, and Welfare, and that the installation width behind the slope is less than 60 cm of the Ministry of Land, Infrastructure and Transport, and the installation width behind the slope is narrow. Because it is a slope, it is impossible to make a pledge. The steeper the slope, the more difficult the compaction becomes. It is known that the horizontal bearing capacity of the struts installed on the slope of the fill section is less than 70% of the flat land.

The vehicle shock load absorption mechanism of the guard rail consisting of the support and the guard plate will be described.

In general, the vehicle shock load absorption mechanism of the guardrail is achieved by 'absorption by reaction' and 'absorption by bending deformation'.

When the vehicle collides with the guard rail, the reaction force against the impact load is exerted on the guard rail, and the impact load of the vehicle is absorbed by the exerted reaction force. It is for this reason that a car crashed into a guardrail bounces off the guardrail.

Absorption by bending deformation means that when the vehicle collides with the guardrail, the impact load causes the guardrail plate (wing) to bend (in this case, the bend). It is a phenomenon that is spreading, and the impact load of the vehicle is absorbed by the 'bending' (in this case, the wing of the guard rail manufactured by bending).

For guardrails, the absorption by "reaction" and "bending strain" must be harmonized. Absorption of only “reaction” Absorption of only “bending strain” is dangerous for life and inefficient for shock absorption.

For example, if absorption is the only reaction, the reaction force is transmitted to the occupant as it is, and the life is dangerous. In other words, due to the reaction force, not only the life of the occupant is primarily at risk, but also the vehicle is bounced, causing a second accident by a high-speed traffic vehicle, thereby further jeopardizing the life of the occupant. The primary culprit of the first and second accidents is the initial reaction force on the impact load of the vehicle. The greater the initial reaction force, the more inevitable the first and second accidents.

To prevent this, it is important to reduce the initial reaction force.

On the contrary, if it is only absorbing the 'bending strain', it is insufficient to absorb the large vehicle impact load by 'bending strain' without 'reaction'.

In addition, if the initial impact is absorbed by the 'reaction', followed by the absorption of the 'bending strain', the initial large impact reaction force is transmitted to the occupant as it is dangerous to life. The reaction force is because the head and neck of the occupant can not withstand this impact reaction force.

Therefore, it is desirable to reduce the initial reaction force, which is the main culprit of the first and second accidents, by bending deformation.

Next, the problems of the prior art in view of the vehicle shock load absorption mechanism of the guardrail is as follows.

As the first of the prior arts, Japanese Patent Laid-Open Publication No. 10-2016-0105723 (hereinafter referred to as Prior Art-1) is disclosed.

As shown in FIG. 3A, the prior art-1 reinforces the side opening 40 and the support 110 to reinforce the horizontal support force of the support 110 of the guard rail 120 installed on the slope 320 of the fill section. It is the structure which it fixed and supported by the assembly 20. According to Figure 3a, the impact load of the vehicle on the slope 320 is to reinforce the horizontal bearing capacity of the support (110) lacked by the reinforcing band assembly 20 fixed to the side opening (40). The reinforcing band assembly 20 is composed of first and

second band portions

210 and 220.

Even if the horizontal bearing force of the support 110 is reinforced by the reinforcing band assembly 20 of FIG. 3A, this is only a reinforcement for the reaction force. When the reaction force exceeding the provisions of the Ministry of Land, Infrastructure, and Reinforcement band assembly 20 is reinforced, the reaction force is transmitted to the occupant at the beginning of the collision so that the first accident (life is at risk) and the second accident (bounces to another lane). Load) is inevitable. This is because there is no absorption structure due to the bending deformation to reduce the initial reaction force in the reinforcing band assembly 20 structure in which the reaction force is reinforced.

On the contrary, if the horizontal support of the support 110 is strengthened to some extent by the reinforcing band assembly 20, but still lacks the horizontal support of the support 110, the support of the support 110 is insufficient as the horizontal support force. There is a problem that can not function.

As a second of the prior art, Patent No. 10-1640859 (hereinafter referred to as Prior Art-2) is disclosed.

As shown in FIG. 4, the prior art-2 installs the auxiliary column 140 near the starting point of the fill slope, and mounts the support force reinforcing plate 120 between the main column 110 and the auxiliary column 140. FIG. It can be seen that the deficiency of the horizontal support of the main support 110 is reinforced by the auxiliary support 140. The prior art-2 is a method of supporting the lack of horizontal support of the main support 110 by the supporting support 140 installed on the slope side of the rear mounting width, which is also supported by the back support 140. Since the main support 110 is supported in a state in which the supporting force is insufficient, there is a problem that it is difficult to meet the regulatory requirements.

This is the same as the case where the horizontal support force is reinforced by the reinforcing band assembly 20, but still lacks the horizontal support force than the prescribed value, and the result is the same.

In addition, even if the conventional method of supporting the main column 110 from the back side such as the auxiliary column 140 on the slope side narrow installation slope of the slope surface of the fill section, the problem of the prior art-2 support method as it is Have.

(a) The present invention allows the deflection of the horizontal support force of the guard rail support generated by the 'guard rail installation width' of the fill section slope to be generally narrower than the prescribed allowance to be reinforced by the horizontal support structure. In addition, the impact load is absorbed by the horizontal bearing structure, but the absorption due to the bending deformation precedes the absorption by the reaction, preventing the risk of life due to the initial impact reaction force and reacting as the main culprit of the subsequent first and second accidents. The purpose is to greatly reduce the magnitude of the reaction force by,

(b) As the strut is pushed out of the ground with respect to the impact load (within the permissible range), the impact load distribution and deflection absorbing members are also pushed together. In the distributed state, it is connected and fixed to the impact load distribution, bending absorbing member and two support points (support points a and b), while the two stop points (a, b) of the impact reaction support and control member to keep the struts pushed out. It is another purpose that the impact load distribution and bending absorbing member between the two stopping points (a, b) and the struts located at the center thereof are preceded by the reaction force by the suppression of the bending force (S). ,

(c) The magnitude of 1/2 the impact load distributed to the impact reaction support and control member in the process of reducing the initial impact load by the bending deformation of the preceding impact load distribution / bending absorbing member is followed by the first and second orders. When the magnitude of the reaction force causing an accident is exceeded and the limit is exceeded, another purpose is to prevent the reaction force from exceeding by causing the control unit of the impact reaction support and control member to break.

(d) The horizontal bearing reinforcement structure, which reinforces the horizontal bearing capacity of insufficient shores and at the same time reduces the initial impact reaction force by the preceding bending deformation, is simple in structure, so that the reinforcement repair and installation of the guard rail is easy and the work is There is another purpose to being efficient and economical.

The configuration of the horizontal support and reinforcement control system for the guard rail provided on the slope of the present invention is as follows.

In the guardrail system in which the side opening 170 and the guard rail 100 are installed on the slope 160 of the narrow width behind the slope 180 in connection with the road 180.

The impact load distribution / bending absorbing member 130 is fixed to the lower portion of the plurality of posts 110 in the direction of the inclined surface 160 and parallel to the side opening 170, and the side opening 170 and the impact load distribution / bending absorbing member are fixed. An impact reaction support / control member 140 is installed between the 130, but the impact reaction support / control member 140 is installed on both sides of the support 110 in symmetry (a, b), and the impact load. The distribution / bending absorbing member 130 has a ductility capable of bending deformation, and one end of the impact reaction support / control member 140 has fixing means 150 fixed to the side wall 172 of the side opening 170, and The other end is formed with a connecting means 144 connected to the impact reaction support and control member 140, the impact reaction control unit 142 is formed in the middle of the impact reaction support and control member 140, Lack of horizontal support force (ΔPh) due to lack of guard rail installation width is caused by horizontal support structure. As the support 110 is pushed out of the ground with respect to the reinforced impact load, the impact load distribution and bending absorbing member 130 are also pushed together. By holding the impact load in a distributed state and suppressing the propagation of the support 110 by two support points (i.e., bilateral symmetry points a and b) connected and fixed to the impact load distribution / bending absorbing member 130, As the impact load distribution and bending absorbing member 130 between the two support points a and b and the support 110 located at the center thereof bends into the bow S, first, the impact load is reduced by bending deformation. As a result, the magnitude of the reaction force (primary and secondary cause of the second accident) of the subsequent impact reaction support and control member 140 is reduced, and at this time, the 1/2 distributed to the impact reaction support and control member 140 is reduced. Of the impact reaction support / control member 140 with the impact load of When the magnitude of the action force is greater than this limit, the impact reaction control portion 142 of the impact reaction support and control member 140 is broken to prevent the risk of primary and secondary accidents due to the reaction force. Horizontal support force reinforcement and control system of guard rail installed.

Here,

The impact reaction support and control member 140 is a deformed steel reinforcing bar, and the impact reaction control unit 142 provided at an intermediate portion thereof has a diameter such that the impact reaction support and control member 140 is broken at a limit of 1/2 the impact load distributed to the impact reaction support and control member 140. It consists of a cutting groove cutting the circumference of the.

First, since the present invention is made of a horizontal bearing structure, the configuration of the horizontal bearing structure will be described.

The horizontal bearing reinforcing structure of the present invention is composed of two members, that is, the impact reaction support and control member 140 and the impact load distribution and bending absorbing member 130, and the connection thereof is made by the impact reaction support and control member 140. It is a structure fixed to the side opening 170 and the impact load distribution / bending absorbing member 130. As shown in FIG.

In other words, the horizontal bearing reinforcement structure of the present invention is a structure that reduces the magnitude of the initial reaction force, which is the main culprit of the first and second accidents, by first causing the bending deformation.

Next, an impact load absorption method of the present invention horizontal bearing structure is described.

In the present invention, the horizontal bearing reinforcing structure is first absorbed by bending deformation, and then subsequently absorbed by reaction.

The absorption method by the bending deformation of the present invention will be described with reference to FIG.

The support structure for the impact load F of FIG. 10 includes the impact reaction support / control member 140 fixed to the center strut 110 and the side wall 172 and the impact load distribution / bending absorbing member 130 connected to the strut 110. It is a structure made up of. The impact load distribution / bending absorbing member 130 has a rod shape having ductility. The impact reaction support / control member 140 is provided on both sides of the center strut 110 in a symmetrical (d), and is fixed to the a and b points of the side wall 172 and the impact load distribution / bending absorbing member 130. The impact reaction support and control member 140 preferably forms a right angle with the side wall 172 and the impact load distribution and warpage absorbing member 130. This is to minimize the component of the impact reaction support and control member 140 with respect to the reaction force. The impact load distribution / bending absorbing member 130 is provided on the back surface of the support 110.

The strut 110 is pushed back against the impact load F. The impact R of the support 110 is suppressed by the impact load distribution, bending absorbing member 130 and the impact reaction support and control member 140 provided on the back surface. R is within the allowable range.

In addition, the maximum horizontal bearing force 54.0 KN (the Ministry of Land, Infrastructure, and Transport) that the support 110 can support with respect to the impact load F will be described. For example, the impact reaction support / control member 140 fixed at points a and b is F. The impact load is divided by two. The impact load distribution / bending absorbing member 130 is bent in the shape of the bow S with the a and b points distributed by F / 2 as a supporting point to suppress the sliding of the support 110.

In the process where the impact load component and the bending absorbing member 130 are bent into a bow S with the a and b points as a supporting point, a part of the impact load is first absorbed by the bending deformation, followed by the absorption by the reaction. do.

In this way, the absorption of reaction forces, which are the main culprit of the first and second accidents, does not occur at an early stage, and the induction of the absorption of bending deformation takes place not only to greatly reduce the risk of life but also to reduce the magnitude of subsequent reaction forces. It is possible to prevent a big accident.

Next, the function of the impact reaction control unit 142 of the impact reaction support and control member 140 of the present invention will be described.

Although the horizontal bearing structure of the present invention is an absorption method that is preceded by absorption by bending deformation, the vehicle does not collide with the support 110 only. For convenience of explanation, the vehicle is described as colliding with the strut 110 and the absorption concept of the horizontal bearing structure is described.

For example, when the vehicle collides toward the impact reaction support and control member 140 instead of the support 110, the impact reaction force is greatly applied to the impact reaction support and control member 140.

If the impact reaction force exceeds the magnitude (limit value) of the reaction force causing the first and second accidents, the impact reaction control unit 142 of the impact reaction support and control member 140 breaks at the limit. This is to prevent the risk of life of first and second accidents due to impact reaction force.

The impact reaction support and control member 140 is preferably a deformed steel bar. This is because the deformed reinforcing bar is widely used in the state that properties such as yield point strength and tensile stress according to diameter have already been verified.

When the impact reaction support and control member 140 is a deformed reinforcing bar, the impact reaction control unit 142 has a cutting groove shape in which a circumference of the diameter is cut in the middle portion thereof.

On the other hand, the configuration of the horizontal bearing reinforcement and control structure of the guard rail provided on the slope of the present invention is as follows.

In the guardrail structure in which the side opening 170 and the guard rail 100 are installed on the slope side 160 with a narrow installation width after the slope 180 is connected to the road 180.

A plurality of impact load distribution and bending absorbing members 130 are installed in parallel to the side openings 170 in the direction of the inclined surface 160 on the bottoms of the plurality of supports 110, and fixed to the supports 110 by the fastening bolts 132. The impact reaction support and control member 140 is installed between the side opening 170 and the impact load distribution / bending absorbing member 130, but the impact reaction support and control member 140 is formed around the support 110. It is installed symmetrically on both sides , the impact load distribution and bending absorbing member 130 is a flexible member capable of bending deformation, one end of the impact reaction support and control member 140 is fixed to the side wall 172 of the side opening 170 It is fixed by the means 150, the other end is connected and fixed to the impact load distribution, bending absorbing member 130 by the connecting means 144, the middle of the impact reaction support and control member 140 Horizontal support force of the guard rail installed on the slope, characterized in that the impact reaction control unit 142 is formed A steel structure and control.

In addition, the fixing means 150 having one end of the impact reaction support and control member 140 fixed to the side wall 172 includes a fixing nut part assembled to the fixing spiral 146 of the impact reaction support and control member 140. 152, fastening piece 154, and fastening holes 154a are preferable. The side wall 172 is firmly fixed by the anchor bolt 154b.

In addition, the other end of the impact reaction support and control member 140 connects and fixes the impact load distribution and the bending absorbing member 130 so that the connection thread 144a and the fastening nut 144b of the impact reaction support and control member 140 are fixed. Is made by the connecting means (144).

The impact reaction support and control member 140 is preferably a deformed steel reinforcing bar, and the impact reaction control unit 142 provided at the middle portion thereof breaks at a limit of 1/2 the impact load allocated to the impact reaction support and control member 140. It is preferable that the cutting groove is formed by cutting the circumference of the diameter as much as possible. This is because the deformed steel rebar has a certain physical property and is easy to handle for forming a cutting groove.

(a) The deflection of the horizontal support capacity of the guardrail struts generated due to the fact that the guardrail installation width of the fill section slope is usually narrower than the specified allowance is reinforced by the horizontal support structure and at the same time, the impact load It is absorbed by the horizontal bearing structure, but the absorption by the bending deformation precedes the absorption by the reaction, preventing the risk of life due to the initial impact reaction force, and reacting by the reaction that is the main culprit of the subsequent first and second accidents. By greatly reducing the size of the force has the effect of preventing the risk of life due to the initial reaction force,

(b) The magnitude of 1/2 the impact load distributed to the impact reaction support and control member in the course of reducing the initial impact load due to the bending deformation of the impact load distribution and bending absorbing member, followed by the first and second orders. When the magnitude of the reaction force causing an accident is exceeded and the limit is exceeded, the control unit of the impact reaction support and control member is broken, thereby preventing the excess of the reaction force in advance.

(c) The horizontal bearing reinforcement structure of the present invention, which reinforces the horizontal bearing capacity of the insufficient support and at the same time reduces the initial impact reaction force by the preceding bending deformation, is simple in structure and easy to reinforce and repair the guard rail. It is a useful invention whose work is efficient and economical.

1 is a state diagram showing a state in which roads and sideways are generally installed on slopes of fill sections

Figure 2a is a state diagram showing the relationship between the horizontal bearing force of the earth pressure applied to the shore when the vehicle collides with the guard rail provided on the flat portion

Figure 2b is a state diagram showing the relationship between the horizontal bearing force of the earth pressure applied to the shore when the vehicle collides with the guard rail provided on the slope

Fig. 3a is a state sectional view of the prior art showing a state in which a deficiency of the horizontal support force of the prop of the roadside guardrail installed on the slope of the fill part is being supported on the road side;

FIG. 3B is a plan view of FIG. 3A

Fig. 4 is a state cross-sectional view showing a state in which a deficiency of the horizontal support force of the prop of the roadside guardrail installed on the slope surface is supported on the slope side.

Fig. 5 is a schematic cross-sectional view showing a horizontal support force reinforcing structure of a guardrail column of the present invention installed between a side opening and a slope.

6 is a perspective view showing a state in which the horizontal bearing structure is installed between the side opening and the slope

7 is a perspective view showing a horizontal support structure reinforced state of the present invention installed between the side opening and the slope

8 is a rear perspective view showing a state in which the impact load distribution and the bending absorbing member of the horizontal support structure of the present invention are installed and fixed on a support post;

9 is an exploded perspective view of the impact reaction support and control member of the horizontal support structure of the present invention.

[Fig 10] A and b points of the impact reaction support and control member which are both symmetrically fixed with the impact load distribution and bending absorbing member of the horizontal bearing reinforcement structure of the present invention while the strut is pushed due to the impact load F are supported. Bending deformed perspective view showing impact load distribution and bending absorbing member bent in a bow (S) as a dot

The configuration of the guardrail installation method using the horizontal bearing reinforcement and control structure of the guardrail provided on the slope of the present invention is as follows.

Ordinary guard rail 100 consisting of the strut 110 and the guard rail plate 120 is connected to the road 180, the side opening 170 and the guard rail 100 on the slope side 160 narrow installation slope after the slope In the guard rail installation method installed

(a) The impact load distribution and bending absorbing member 130 having a ductility parallel to the side surface 170 in the direction of the inclined surface 160 is installed on the bottom of the plurality of pillars 110, and the fastening bolts 132 are provided. Securing to the support 110;

(b) The impact reaction control unit 142 is provided at the middle of the impact reaction support and control member 140, the fixed screw 146 for fixing the side wall 172 at one end thereof, and the impact load distribution at the other end thereof. In the state in which the connecting spiral portion 144a for fastening the absorbing member 130 is formed, the side wall 172 fixing screw 146 is spirally coupled to the fixing nut 152 of the fixing means 150. Forming an assembly member (C) having a piece (154);

(c) The assembly member (C) having the fastening piece 154 assembled in the step (b) is installed between the side opening 170 and the impact load distribution and bending absorbing member 130, but centers the support 110. Symmetrically installed on both sides, and one end of the assembly member (C) is fixed to the side opening (170) and the other end to the impact load distribution and bending absorbing member (130). The fastening piece 154 of the assembly member C is fixed to the side wall 172 by 154b, so that one end of the assembly member C is fixed to the side wall 172, and the impact load distribution / bending absorbing member 130 is fixed. In the fixing of the joint, the other end of the assembly member C is fastened and fixed to the impact load distribution / bending absorbing member 130 by the connection screw 144a and the fastening nut 144b of the impact reaction support and control member 140. And a step of fixing the impact load distribution / bending absorbing member 130 to the horizontal support force of the guardrail installed on the slope. Steel and a method to install guardrail with a control structure.

In addition, in step (b), the impact reaction support and control member 140 is a deformed reinforcing bar, and the impact reaction control unit 142 installed at the middle portion of the impact reaction is 1/2 of the impact distributed to the impact reaction support and control member 140. Forming a circumferential cutting groove of the deformed bar so as to break at the load limit.

Thus, the horizontal bearing reinforcing structure of the present invention is composed of two members, that is, the impact reaction support and control member 140 and the impact load distribution and bending absorbing member 130, the connection of the impact reaction support and control member 140 It is made by the impact reaction support and control member 140, one end is connected to and fixed to the side opening 170, the other end to the impact load distribution, bending absorbing member 130, the impact load distribution around the support 110 While the impact reaction support / control member 140 is fixed to both sides of the bending absorbing member 130 (i.e., both symmetry points a and b), the support 110 is pushed out of the ground with respect to the impact load. The impact load distribution / bending absorbing member 130 is also pushed together (within the permissible range), and the impact reaction support and control member 140 installed in both symmetry is supported with the impact loads distributed by 1/2, In addition, two jerseys connected and fixed to the impact load distribution and the bending absorbing member 130 The impact load distribution and warpage absorbing member 130 between the two stop points a and b and the strut 110 located at its center by suppressing the push of the strut 110 by the points (support points a and b) While bending to the bow shape (S) to prevent the risk of life due to the initial impact reaction force by the bending deformation, the structure of the reaction force, which is the main culprit of the subsequent first and second accidents, is reduced.

Claims

In the guardrail system in which the side opening 170 and the guard rail 100 are installed on the slope 160 of the narrow width behind the slope 180 in connection with the road 180.

The impact load distribution / bending absorbing member 130 is fixed to the lower portion of the plurality of posts 110 in the direction of the inclined surface 160 and parallel to the side opening 170, and the side opening 170 and the impact load distribution / bending absorbing member are fixed. An impact reaction support / control member 140 is installed between the 130, but the impact reaction support / control member 140 is installed on both sides of the support 110 in symmetry (a, b), and the impact load. The distribution / bending absorbing member 130 has a ductility capable of bending deformation, and one end of the impact reaction support / control member 140 has fixing means 150 fixed to the side wall 172 of the side opening 170, and The other end is formed with a connecting means 144 connected to the impact reaction support and control member 140, the impact reaction control unit 142 is formed in the middle of the impact reaction support and control member 140, Lack of horizontal support force (ΔPh) due to lack of guard rail installation width is caused by horizontal support structure. As the support 110 is pushed out of the ground with respect to the reinforced impact load, the impact load distribution and bending absorbing member 130 are also pushed together. By holding the impact load in a distributed state and suppressing the propagation of the support 110 by two support points (i.e., bilateral symmetry points a and b) connected and fixed to the impact load distribution / bending absorbing member 130, As the impact load distribution and bending absorbing member 130 between the two support points a and b and the support 110 located at the center thereof bends into the bow S, first, the impact load is reduced by bending deformation. As a result, the magnitude of the reaction force (primary and secondary cause of the second accident) of the subsequent impact reaction support and control member 140 is reduced, and at this time, the 1/2 distributed to the impact reaction support and control member 140 is reduced. Of the impact reaction support / control member 140 with the impact load of When the magnitude of the action force is greater than this limit, the impact reaction control portion 142 of the impact reaction support and control member 140 is broken to prevent the risk of primary and secondary accidents due to the reaction force. Horizontal bearing capacity reinforcement and control system of installed guard rail
The method of claim 1

The impact reaction support and control member 140 is a deformed steel reinforcing bar, and the impact reaction control unit 142 provided at an intermediate portion thereof has a diameter such that the impact reaction support and control member 140 is broken at a limit of 1/2 the impact load distributed to the impact reaction support and control member 140. Horizontal support force reinforcement and control system for guard rails installed on slopes characterized by cutting grooves cut through the circumference
In the guardrail structure in which the side opening 170 and the guard rail 100 are installed on the slope side 160 with a narrow installation width after the slope 180 is connected to the road 180.

A plurality of impact load distribution and bending absorbing members 130 are installed in parallel to the side openings 170 in the direction of the inclined surface 160 on the bottoms of the plurality of supports 110, and fixed to the supports 110 by the fastening bolts 132. The impact reaction support and control member 140 is installed between the side opening 170 and the impact load distribution / bending absorbing member 130, but the impact reaction support and control member 140 is formed around the support 110. It is installed symmetrically on both sides , the impact load distribution and bending absorbing member 130 is a flexible member capable of bending deformation, one end of the impact reaction support and control member 140 is fixed to the side wall 172 of the side opening 170 It is fixed by the means 150, the other end is connected and fixed to the impact load distribution, bending absorbing member 130 by the connecting means 144, the middle of the impact reaction support and control member 140 Horizontal support force of the guard rail installed on the slope, characterized in that the impact reaction control unit 142 is formed River control structure and
The method of claim 3,

The fixing means 150 at which one end of the impact reaction support and control member 140 is fixed to the side wall 172 is a fixing nut part 152 assembled to the fixing spiral 146 of the impact reaction support and control member 140. ), A fastening piece 154 and a fastening hole 154a, and the side wall 172 is fixed by an anchor bolt 154b.
The method of claim 3,

The other end of the impact reaction support / control member 140 is connected to the shock load distribution / bending absorbing member 130 and is fixed to the connection spiral 144a and the fastening nut 144b of the impact reaction support / control member 140. Horizontal support and reinforcement and control structure of the guard rail installed on the slope, characterized in that made by the connecting means 144 of the
The method according to claim 3 or 4

The impact reaction support and control member 140 is a deformed steel reinforcing bar, and the impact reaction control unit 142 provided at an intermediate portion thereof has a diameter such that the impact reaction support and control member 140 is broken at a limit of 1/2 the impact load distributed to the impact reaction support and control member 140. Horizontal bearing capacity reinforcement and control structure of guard rail installed on the inclined surface, characterized by cutting groove cut in the circumference of the
Ordinary guard rail 100 consisting of the strut 110 and the guard rail plate 120 is connected to the road 180, the side opening 170 and the guard rail 100 on the slope side 160 narrow installation slope after the slope In the guard rail installation method installed

(a) The impact load distribution and bending absorbing member 130 having a ductility parallel to the side surface 170 in the direction of the inclined surface 160 is installed on the bottom of the plurality of pillars 110, and the fastening bolts 132 are provided. Securing to the support 110;

(b) The impact reaction control unit 142 is provided at the middle of the impact reaction support and control member 140, the fixed screw 146 for fixing the side wall 172 at one end thereof, and the impact load distribution at the other end thereof. In the state in which the connecting spiral portion 144a for fastening the absorbing member 130 is formed, the side wall 172 fixing screw 146 is spirally coupled to the fixing nut 152 of the fixing means 150. Forming an assembly member (C) having a piece (154);

(c) The assembly member (C) having the fastening piece 154 assembled in the step (b) is installed between the side opening 170 and the impact load distribution and bending absorbing member 130, but centers the support 110. Symmetrically installed on both sides, and one end of the assembly member (C) is fixed to the side opening (170) and the other end to the impact load distribution and bending absorbing member (130). The fastening piece 154 of the assembly member C is fixed to the side wall 172 by 154b, so that one end of the assembly member C is fixed to the side wall 172, and the impact load distribution / bending absorbing member 130 is fixed. In the fixing of the joint, the other end of the assembly member C is fastened and fixed to the impact load distribution / bending absorbing member 130 by the connection screw 144a and the fastening nut 144b of the impact reaction support and control member 140. And a step of fixing the impact load distribution / bending absorbing member 130 to the horizontal support force of the guardrail installed on the slope. And steel guardrail installation method using a control structure
The method of claim 7,

In the step (b), the impact reaction support and control member 140 is a deformed steel reinforcing bar, and the impact reaction control unit 142 installed at the intermediate portion thereof has a half impact load distributed to the impact reaction support and control member 140. Forming a circumferential cutting groove of the deformed bar so as to break at the limit value of the guard rail installation method using the horizontal bearing reinforcement and control structure of the guard rail installed on the slope