TWI417440B - Impact absorption fence - Google Patents

Description

Shock absorption barrier

The present invention relates to an impact absorbing barrier for attenuating and stopping impact energy of falling objects such as falling rocks or avalanches.

In order to protect roads or houses from falling objects such as falling rocks or avalanches, shock absorbing barriers for absorbing such impacts have been provided on the inclined surfaces. Regarding the above-mentioned protective grille, it is known that a protective net such as a wire or a wire mesh is horizontally stretched between the pillars which are stood at predetermined intervals on the inclined surface.

[Patent Document 1] Japanese Patent No. 3390132

However, the conventional shock absorbing barrier has the following problems.

<1> Since the impact of the falling rock or the like is absorbed by the rigidity of the pillar or the deflection of the protective net, the impact that can be absorbed is limited, and in order to construct a shield of higher strength, a large construction cost is required.

<2> Although increasing the interval between the pillars will reduce the construction cost, the protective net at the central portion between the pillars will be slack and the grid height will be insufficient.

<3> Since the protective net is tightly placed between the pillars, the height of the ridges at the ridges becomes insufficient when the natural ground between the pillars is raised.

<4>Because the protective net is tightly placed between the pillars, when the natural ground is recessed between the pillars, the ground and the protective net will be A gap occurs between them, which may cause the falling stones to pass through the gap.

<5> In order to solve the above <3> and <4>, it is necessary to set up pillars in accordance with the terrain, so the number of pillars will increase, resulting in an increase in construction costs.

<6> When a falling rock or the like hits, the protective net deflects and approaches the center of the net up and down, so that the longitudinal width of the protective net is reduced. Therefore, it will cause the next falling rock to pass through the upper side or the lower side of the protective net.

The present invention has been made in order to solve the above problems, and an object of the invention is to provide an impact absorbing protection grille which can ensure a gate height and has a large attenuation efficiency of impact energy and a simple structure.

The first embodiment of the present application for achieving the above object is an impact absorbing protective fence in which a protective net is tightly disposed between pillars which are arranged at predetermined intervals, wherein the protective net includes a erected phase. a plurality of ropes between the upper and lower pillars and a mesh material that is tightly disposed between the ropes, and a buffer member is disposed at an intersection of the pillars and the ropes or the overlapping portions of the plurality of ropes Grasp the above ropes.

The second embodiment of the present application is the impact absorbing barrier according to the first embodiment, wherein the pillar is hollow, and the pillar rope fixed by the anchor in the lower portion of the pillar is inserted and worn through the pillar. And the above-mentioned strut rope is grasped by a cushioning member provided at an upper end portion of the above-mentioned strut.

The third embodiment of the present invention is the shock absorbing protection grille according to the first or second embodiment, wherein the cushioning member is a frictional resistance type.

The fourth embodiment of the present application is the shock absorbing protection grille according to the first embodiment, wherein a gate high holding material is disposed along a direction extending through the protective net, and when the impact force is applied, the grid height maintaining material is self-contained. The above protective net is detached.

The fifth embodiment of the present invention is the impact absorbing shield according to the fourth or fifth embodiment, wherein the gate height holding material is bendable in the longitudinal direction when an impact force is applied.

The sixth aspect of the present invention is the impact absorbing shield of the fourth or fifth embodiment, wherein at least a part of the gate height holding material is coupled to the mesh material, and both ends are locked to the above The rope, when the impact force acts, the above-mentioned grid height retaining material will be detached from the above-mentioned rope.

The seventh embodiment of the present application is the shock absorbing protective fence according to the fourth or fifth embodiment, wherein the wire high holding material is connected to the wire connecting the upper end of the adjacent pillar or the wire connecting the lower end. Fang, formed with the expansion of the protective net.

The eighth aspect of the present invention is the impact absorbing barrier of the fourth or fifth embodiment, wherein the length of the gate height holding material is the same as or longer than the pillar.

The ninth embodiment of the present invention is the impact absorbing protective fence according to the fourth or fifth embodiment, wherein the gate height holding material is adjustable in length.

The present invention can attain at least one of the following effects by means for solving the above problems.

<1> Since the rope is placed between the upper and lower sides of the pillar and the mesh material which is tightly disposed between the ropes and has a simple structure, the construction is easy and the cost is low.

<2> Since the rope is grasped by the cushioning member, the shield that can be constructed not only has an impact absorbing effect by the deflection of the mesh material, but also has an impact absorbing effect by the sliding resistance of the rope material, thereby The attenuation of the impact energy is more efficient.

<3> Since the gate height retaining material is disposed between the pillars, the slack of the shield mesh between the pillars can be prevented, thereby ensuring the grid height.

<4> In the case of impact such as rockfall, the impact energy is absorbed by the movement of the gate height holding material, the separation of the gate height holding material from the rope, and the bending of the gate height holding material, so that the damping efficiency of the impact energy is increased.

<5> When the impact of falling stones or the like is applied, the gate height retaining material is detached without affecting the sliding of the rope, so that the original function of the protective barrier is not damaged.

<6> The gate height retaining material is bent in the longitudinal direction to enclose the falling stone, etc., so that falling stones and the like can be prevented from being scattered from the protective net.

<7> Since the gate height retaining material is locked to the protective net, it is not necessary to provide an anchor or the like, so that the construction can be easily performed.

<8> Since the expansion portion is formed by using the grid-high holding material having a longer pillar length, the impact area against the falling rock or the like can be increased as compared with the case where the fence is tightly placed between the pillars.

<9> Since the impact area is increased, even if the protective net is deformed by the falling rock or the like, the longitudinal width of the protective net can be ensured, thereby When the next falling rock or the like falls, it does not pass through the upper side or the lower side of the protective net.

<10> Since the expansion portion is formed by using the gate-high holding material having a longer pillar length, the grid height can be ensured even when the protective net is slack.

<11> Since the expansion portion is formed by using the gate-high holding material of the pillar length, the fence can be formed by the undulation of the topography between the pillars.

Embodiments of the present invention will be described below with reference to the drawings.

[Examples]

(1) Structure of shock absorbing protective grid

As shown in FIG. 1, the shock absorbing protection grille of the present invention comprises: a strut 10 standing at a predetermined interval, a protective net 20 including a rope 21 and a mesh material 22 and tightly disposed between the pillars 10, and a gripping rope. The cushion member 13 of the material 21 and the gate height retaining member 30 disposed in the direction of the protective net 20 are disposed.

Hereinafter, each structural component will be described in detail.

(2) pillar

1 and 2 show a first embodiment of the present invention, in which the support 10 is of a dump type, and a plurality of tubular struts 10 are erected on the inclined surface 40 at predetermined intervals. In each of the pillars 10, a pillar rope 11 having a lower portion fixed to the inclined surface 40 by an anchor is disposed, and the pillar ropes 11, as shown in FIG. 3, are attached to the upper end of the pillar 10 by grasping the cushioning members 12 Can be maintained.

The cushioning member 12 has the function of grasping the strut rope 11 and When the tension above the frictional resistance of the grip portion acts, the strut rope 11 is allowed to slide to attenuate the energy.

Optionally, a connecting cable is disposed between each of the pillars 10 and the inclined surface 40, or a cushioning member is disposed at an end or in the middle of the cable.

(3) Protective net

The protective net 20 is a member for resisting falling stones and the like, and includes a rope 21 that is placed between the pillars 10 and a mesh material 22 that is coupled to the rope 21 .

As shown in FIG. 1 , FIG. 4( a ) and FIG. 4( b ), the string 21 is gripped by the cushioning member 13 and placed between the pillars 10 .

The mesh material 22 is a wire mesh or a synthetic resin mesh material. As shown in Fig. 1, the coil material 23 or the like is wound over the entire length or a part of the rope material 21, and the mesh material 22 is in a movable state and the rope material 21 link.

(4) buffer

The cushioning member 13 is a member having a function of grasping the string 21 and allowing the string 21 to slide when the tension of the grip portion acts above the frictional resistance to attenuate the energy.

As shown in Fig. 1 and Fig. 4(a), the cushioning member 13 is attached to the lower end of the column 10, and the two members are joined to the intersection of the column 10 and the string 21. Further, as shown in Fig. 4(b), the cushion member 13 is disposed between the pillars 10 and 10, and the two rope members 21 are connected and tightly connected to the overlapping portion of the rope member 21 which is stretched from the two pillars.

The cushioning member 13 and the cushioning member 12 for holding the strut rope 11 can use a well-known frictional resistance cushioning member such as the following to hold the rope. In this way, the two plates are overlapped, and the nut is screwed into the U-bolt passing through the plate body in the overlapping state, thereby holding the rope.

(5) Impact absorption of protective nets and pillars

When the falling rock or the like hits the above-described impact absorbing barrier including the support 10 and the protective net 20, the impact energy is attenuated by the sliding of the wire constituting the mesh 22 of the protective net 20 and the deflection deformation toward the downstream side of the inclined surface. Further, the impact energy acting on the protective net 20 acts on the rope 21.

The impact energy acts on the string 21 as a tensile force, and if the tensile force exceeds the gripping force of the cushioning member 13, the string 21 slides in the cushioning member 13 against the gripping force. The impact energy is thus attenuated by the frictional force.

Therefore, as shown in Fig. 1, when the cord member 21 is grasped by the cushioning member 13, the grasping method is such that the super-long portion 211 for sliding the string member 21 is formed.

The impact energy via the mesh material 22, the rope 21, and the cushioning member 13 is finally transmitted to the pillar 10.

When the impact energy acts on the strut 10 and exceeds the gripping force of the cushioning member 12 provided at the upper end of the strut 10, the strut rope 11 slides inside the cushioning member 12, and the frictional force thereof absorbs the impact energy while supporting the braking force of the load. The pillar 10 is inclined at the same time.

Further, when the stay 10 is connected to the cable or the cushion is provided with the cushion member, the impact energy can be attenuated by the sliding resistance of the cable or the cushion member.

Since the foundation concrete 10 is not required when the pillar 10 is erected, it is only necessary to anchor the pillar rope 11, so that it can be easily erected.

Since the simple structure of the upper and lower ropes 21 and the mesh material 22 is tightly provided only between the pillars 10, the construction can be performed at low cost and easily.

Since the mesh member 22, the rope member 21, and the support member 10 each have an absorption function for impact energy, it is possible to easily construct an impact absorption barrier having high attenuation efficiency of impact energy.

(6) Grid height retaining material

The gate height retaining material 30 is a member for preventing the net 20 between the pillars 10 from slacking, and is disposed along the direction of the fence 20 extending between the pillars 10.

The gate height holding material 30 is a columnar body having the same length as the pillar 10 or longer than the pillar 10.

As shown in Fig. 1, a recess 31 is provided in the vicinity of the upper end of the gate height holding member 30 and in the vicinity of the lower end for locking the gate height holding member 30 to the string 21.

The gate height holding material 30 is configured such that the joint portion 32 is provided at at least one of the longitudinal directions, and can be bent into a plurality of sections.

As shown in FIG. 5, the gate height holding material 30 is configured to be expandable and contractible by providing the sliding portion 34 or the like, and the length can be adjusted.

The gate height holding material 30 is locked and disposed on the rope 21 that is placed between the pillars 10.

Since the length of the gate height holding material 30 is the same as that of the pillar 10 or longer than the pillar 10, the fence 20 is tightly disposed in the longitudinal direction.

The rope 21 passes through the recess 31 near the upper end of the gate height holding member 30 and the vicinity of the lower end, and as shown in Fig. 5, is locked by the pin 33 or the like, and the gate holding material 30 is easily self-roping when impacted by a falling rock or the like. 21 detached. Further, at least a part of the gate height holding material 30 is coupled to the mesh member 22 by a wire 24 or the like.

Since the gate height holding material 30 is locked to the rope 21 of the protective net 20, it is not necessary to provide an anchor or the like, so that the construction can be easily performed.

(7) Ensure the grid height

The shock absorbing protective grille is formed by tightly providing the protective net 20 between the pillars 10. As shown in Fig. 6(a), the protective net 20 is loosened to the bottom side of the center portion between the pillars 10 by weight, and the grid height is changed. For H1, the necessary gate height H cannot be ensured, resulting in insufficient gate height.

In the shock absorbing protection grille of the present invention, by providing the grid height retaining material 30 between the pillars 10, as shown in Fig. 6(b), the protective net 20 is tightly disposed in the longitudinal direction, and the protective net 20 can be prevented. Relaxation to ensure the necessary grid height H.

(8) Ensure the height of the grid consistent with the sloped terrain

In the case where the topography of the slope 40 between the pillars 10 is raised, the gate height is insufficient at the raised portion of the slope 40.

Therefore, as shown in Fig. 7, the gate height retaining material 30 is disposed at the protective net 20 of the raised portion so that the protective net 20 is tightly disposed in the longitudinal direction, thereby ensuring even in the case of terrain elevation. Grid height.

As shown in Fig. 8, the terrain of the inclined surface 40 between the pillars 10 is recessed. In this case, the grid height holding material 30 longer than the pillars 10 is disposed so that the fence 20 is tightly disposed in the longitudinal direction, thereby filling the gap A generated when the gate height holding material 30 is not used, thereby preventing Falling stones and the like pass through the gap A. At this time, the anchor pin 35 is provided at the lower portion of the gate height holding member 30 to fix the gate height holding member 30 to the inclined surface 40, whereby the protective net 20 can be easily tightly fitted to the gap A.

Since the gate height retaining material 30 can be adjusted in length in accordance with the terrain of the inclined surface 40 in the field, the construction efficiency is better.

(9) Impact absorption of the gate height retaining material

As shown in Fig. 9, when a falling rock or the like hits the impact absorbing shield, the braking force that pushes the rock back or the like is caused by the weight of the grid height retaining material 30 locked to the fence 20. The impact energy is attenuated by the braking force, that is, the impact energy is absorbed, thereby weakening the impact force acting on the protective net 20 and the strut 10.

Further, since the gate-high holding material 30 is disposed on the peak side of the protective net 20, the falling stone or the like directly hits the gate-high holding material 30, and most of the impact is resisted by the gate-high holding material 30, so that the protective net 20 is impacted. The risk of damage is reduced.

Since the gate height holding material 30 is only locked to the rope 21 and is attached to the mesh material 22 by a coil material or the like, even if it is damaged by impact, it does not affect the performance of the shock absorbing barrier itself, and is replaced. The gate height retaining material 30 is also relatively easy and inexpensive.

The gate height retaining material 30 imparts weight to the protective net 20. Accompanying protective net When the sliding of the rope 21 or the movement of the web 22, the gate height retaining material 30 will also move, and the weight imparted to the protective net 20 acts as a braking force against the impact, so the impact absorption performance of the impact absorbing barrier Can be improved.

The gate height holding material 30 is configured to be detached when it is locked by the rope 21 and subjected to an impact such as a falling rock. At the time of the detachment, the impact energy is absorbed by the resistance generated by the pin 33 or the like. By detaching, the sliding of the rope 21 is not affected, and the absorption of the impact energy is not hindered, and the wire 24 is connected to the mesh 22 by the wire 24, so that the weight of the gate holding material 30 is directly imparted to the mesh. 22 acts as a braking force for the impact and therefore has no effect on the performance of the shock absorbing barrier.

As shown in Fig. 10, the gate height holding material 30 is configured such that the joint portion 32 is provided at at least one of the longitudinal directions, and when the rock is impacted by a falling rock or the like, the joint portion 32 is detached, so that the gate height holding member 30 is bent.

Since the joint portion 32 is disengaged against the frictional force, the impact energy is absorbed when it is disengaged.

Further, since the gate height holding member 30 is bent to wrap the falling stone or the like, it is possible to prevent the falling stones and the like from being scattered from the protective net 20.

(10) Formation of the expansion department

When the gate height holding material 30 having a length longer than the pillar 10 is used, the rope 21 is tightly disposed in the longitudinal direction of the gate height holding member 30, as shown in Fig. 11, above the outer side of the line connecting the upper ends of the pillars 10, The expansion portion B will be formed. By forming the expansion portion B, the protective net 20 is horizontally tightened compared to When it is disposed between the pillars 10, the impact area against rockfall or the like can be increased.

Moreover, since the impact area is increased, even if the protective net 20 is flexed and deformed due to falling stones or the like, the longitudinal width of the protective net 20 can be ensured, so that when the next falling rock or the like falls, the self-protecting net 20 does not Pass on the upper side or the lower side.

The shape of the formed expansion portion B can be changed by providing a plurality of root gate height retaining members 30.

(11) Other embodiments

In the above embodiment, the structure is such that the gate height holding material 30 is mounted on the impact absorbing protection grid including the rope 21 and the mesh material 22. However, the same effect can be obtained by applying the gate height holding material 30 in the shock absorbing protection grid of the following structure. That is, a plurality of wire ropes that are placed between the pillars are used as a protective net, or only a wire mesh is used as a protective net.

10‧‧‧ pillar

11‧‧‧Pillar rope

12‧‧‧ cushioning parts

13‧‧‧ Buffer

20‧‧‧Protective net

21‧‧‧Land

211‧‧‧Super Long Department

22‧‧‧Net

23‧‧‧ coil material

24‧‧‧Wire

30‧‧‧ Grid height retaining material

31‧‧‧ recess

32‧‧‧ joints

33‧‧ ‧ sales

34‧‧‧Sliding section

35‧‧‧ anchor pin

40‧‧‧Bevel

A‧‧‧ gap

B‧‧‧Expansion Department

H, H1‧‧‧ grid height

1 is a perspective view of an impact absorbing barrier of the present invention; FIG. 2 is a front view of the impact absorbing barrier of the present invention; FIG. 3 is a side view of the upper end of the pillar; and FIG. 4 is a grasping rope by a buffer member. FIG. 5 is a side view of the gate height holding material; FIG. 6 is an explanatory view of the gate height of the impact absorbing guard gate by the gate height holding material; FIG. 7 is a gate height maintaining material And to ensure the impact absorption barrier The description of the grid height; Fig. 8 is a layout view of the grid height retaining material in conformity with the slope topography; Fig. 9 is a side view of the state after the impact of the falling rock, etc.; Fig. 10 is a side view of the state after the impact of the falling rock and the like And Fig. 11 is an explanatory view showing an expansion portion provided in an upper portion of the shock absorbing protection grille of the present invention.

10‧‧‧ pillar

11‧‧‧Pillar rope

12‧‧‧ cushioning parts

13‧‧‧ Buffer

20‧‧‧Protective net

21‧‧‧Land

211‧‧‧Super Long Department

22‧‧‧Net

23‧‧‧ coil material

24‧‧‧Wire

30‧‧‧ Grid height retaining material

31‧‧‧ recess

Claims (8)

An impact absorbing protective grille is an impact absorbing protective grille tightly disposed between the pillars which are arranged at predetermined intervals, and is characterized in that: the protective net comprises a plurality of roots arranged between the upper and lower sides of the adjacent pillars a cord and a web material tightly disposed between the ropes; a buffer member is disposed at an intersection of the pillar and one of the ropes or one of the plurality of ropes to grasp the rope, A gate height retaining material is disposed along the direction of the protective net, and the gate height retaining material is detached from the protective net when the impact force acts. The impact absorbing barrier of claim 1, wherein the pillar is hollow, and a pillar of the pillar is inserted and passed through the anchor after being fixed by an anchor in the lower portion of the pillar, and by The cushioning member is disposed at an upper end of the pillar to grasp the pillar rope. The shock absorbing protective fence according to claim 1 or 2, wherein the cushioning member is a frictional resistance type. The impact absorbing barrier of claim 1, wherein the gate height retaining material is bendable in the longitudinal direction when an impact force is applied. The impact absorbing barrier of claim 1 or 4, wherein at least a portion of the gate holding material is associated with the mesh The two ends are locked to the rope, and when the impact force acts, the gate height retaining material is detached from the rope. The shock absorbing protection grille according to claim 1 or 4, wherein the gate height retaining material is formed by a line connecting the upper end of the adjacent pillar or a line connecting the lower end of the adjacent pillar. One of the expansion departments of the network. The impact absorbing barrier of claim 1 or 4, wherein the gate height retaining material has the same length as or longer than the pillar. For example, the shock absorbing protective fence of claim 1 or 4, wherein the grid height retaining material is adjustable in length.