JP2869516B2 - Suspended pointed guard fence - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suspended pointed guard fence constructed on an upper slope such as a tunnel or various structures, and is decelerated and guided left and right by falling rocks and avalanches. It is.

[0002]

2. Description of the Related Art A conventional pointed guard fence is, for example, as shown in FIG. 2, excavating a slope s at an appropriate interval above a tunnel (various structures, etc.) a and placing a cocrete foundation c, On the cocrete foundation c, a concrete protection fence formed in the shape of a point with a left and right sloping wall ba in a plan view is constructed, and both slopes ba of the pointed concrete protection fence receive a falling rock, an avalanche F, etc., and decelerate. It has a structure to protect it by guiding F1 on both sides of the tunnel.

[0003]

The conventional pointed concrete protective fence is provided on a cocrete foundation, which is formed by excavating the upper slope of a building (tunnel) or the like as described above.
Excavation and construction on slopes with poor scaffolding requires a lot of time and effort because it is constructed as a heavy structure, and the fence itself is such that the slope of the foundation can easily flow out or collapse due to rainwater due to the excavation. However, there is a problem that the vehicle may fall down, and it is difficult to repair and a troublesome reconstruction is required.

SUMMARY OF THE INVENTION The present invention has been developed to solve the above-mentioned problems. An object of the present invention is to provide a plurality of pointed cross beams fixed to a column group with a base plate in a plurality of steps. As a head protection fence, this pointed protection fence is placed on a slope and suspended and supported by a suspension cable group, simplifying and reducing weight and facilitating construction and repair management, and improving protection performance and reliability as well as workability. It is to provide an improved suspended pointed guard fence.

[0005]

SUMMARY OF THE INVENTION According to the present invention, a plurality of pointed cross beams reinforced by reinforcing beams by connecting diagonal cross beams to the left and right of the pointed head are fixed to a plurality of columns with a base plate in a plurality of steps. The fence mechanism is simplified and lightened by arranging the pointed guard fence on a slope and connecting and suspending it with a plurality of hanging ropes anchoring the tip and both wings. At the same time, the construction and repair management are facilitated, and the suspension support enhances the cushioning support performance and inducibility of falling rocks and avalanches.

In addition, a plurality of energy-reducing ropes are stretched in a plurality of steps at approximately vertical intervals substantially in front of the pointed guard fence,
Comprehensive measures such as further improving the buffer support performance of falling rocks and avalanches, and furthermore, installing a protective wire mesh almost all behind the pointed guard fence to prevent falling from falling rocks and avalanches etc. In addition, the protection performance and reliability are further improved.

[0007]

[Action] A pointed guard fence formed by connecting a plurality of pointed cross beams reinforced with reinforcing beams by connecting diagonal cross beams to the left and right of the pointed head in a plurality of steps with a plurality of columns with a base plate, The structure is relatively simple and lightweight, and it is easy to place on the slope. It is easily constructed as a protective fence.

[0008] This pointed guard fence is suspended by the above-mentioned hanging ropes, buffers the falling rocks, avalanches, etc. at both wings formed by the pointed cross beams, guides it smoothly to the left and right, and slopes the slope. The workability is enhanced, such as preventing the fence from falling due to spills or collapse, etc., and it exhibits reliable and excellent protection performance.

In addition, a plurality of energy-reducing ropes are stretched in a plurality of steps at approximately vertical intervals substantially in front of the pointed guard fence,
The damping rope group further absorbs rockfalls and avalanches and guides them to the left and right, and furthermore, a protective wire mesh is installed almost all over the rear side of the pointed guard fence, and this rocking mesh Overall, the protection performance and reliability have been further improved, such as preventing avalanches from falling directly below.

Further, the pointed guard fence is selected to have a required size and structure (bearing strength), and the number of suspension ropes is set in accordance with the scale of the building to be protected, the shape of the slope, falling rocks, avalanches, and the like. It can be easily constructed as a suspended pointed guard fence that exhibits the required required protection performance by increasing or decreasing the number of pieces, and repair management can be performed at any time.

[0011]

FIG. 1 shows each embodiment of the present invention. In the figure, 1 is a cross beam having both wings 10b formed on both sides of a pointed head 10a;
5 is a column to which the horizontal beams are fixed, 3a to 3d are reinforcing beams connecting the left and right horizontal beams, 4a and 4b are base plates of the columns, and 9a to 9e are anchors 19a to 19e.
A hanging rope anchored by 10; a pointed protection fence consisting of a pointed head 10a and both wings 10b; 13 a power-reducing rope stretched over a front surface of the pointed protection fence with a spacer 7 or a pipe 8; Reference numeral 15 denotes a protective wire mesh extending on the rear surface (or the front surface) of the pointed protective fence.

More specifically, the diagonal cross beam 1 is formed of various shaped steel materials such as H-shaped steel materials, pipes, and the like, and the front ends of the left and right diagonal cross beams are appropriately connected by a pointed head 10a (not shown). And a plurality of reinforcing beams 3a are provided between the left and right diagonal horizontal beams.
To 3d to form a pointed cross beam reinforced. The support 2 is formed of various shaped steel materials and pipes such as H-shaped steel and supports the left and right diagonal cross beams 1. The support 5 is formed of a rectangular steel material and the like, and each diagonal cross beam is formed by a pointed head 10a. 1 to support the front end. Also, base plates 4a, 4b are fixedly provided at the lower ends of the columns 2, 5, and the columns 5 of the pointed head 10a and the front side (upper side) of the right and left columns 2 groups.
In addition, a plurality of pointed cross beams are fixed at appropriate intervals in a vertical direction with connecting metal fittings (not shown) to form a pointed guard fence 10 including a pointed head 10a and both wings 10b. .

The pointed guard fence 10 is disposed on the upper slope S at an appropriate distance from various structures such as tunnels and the like, and a plurality of suspension ropes 9a 9a to 9e, and anchors 19a to 1 having the upper ends of the suspension ropes installed on the upper slope S.
9e is connected to each other, anchored and suspended, and easily constructed as a suspended pointed guard fence.

When constructing the above-mentioned suspended pointed guard fence, the scale of the structure such as a tunnel to be protected, the height and slope of the slope S, the size of falling rocks and avalanches, the falling speed, etc.
The size and structure (proof strength) of the pointed guard fence 10 are selected, and if necessary, a large number of hanging ropes 9a to 9d are used as shown in FIG. Alternatively, as shown in FIG. 1B, at least the upper and lower portions of the pointed head 10a are suspended and supported by a plurality of suspension ropes 9a and 9c,
b is suspended by a suspension rope 9e to secure required fence strength and suspension performance against falling rocks, avalanches, and the like.

In the above-mentioned suspension type pointed guard fence, the pointed guard fence 10 is formed by mounting a plurality of pointed cross beams on columns 2 and 5 having a plurality of base plates 4a and 4b, and is relatively simple. The pointed guard fence is easily disposed on the slope S, and the pointed head 10a and the two wings 10b are easily supported by a plurality of suspension ropes 9a to 9e. Is done. With the above-mentioned suspension mechanism, the two wing parts 10b buffer the falling rocks and avalanches falling from above the slope and receive moderately decelerated and smoothly guided to the left and right. Also, the slope on which the pointed guard fence is arranged is provided. The protection performance and reliability have been effectively improved as well as the workability, such as preventing the fence from falling down even if it spills or collapses.

In the illustrated pointed guard fence 10,
At the front side of the pointed head 10a, a pipe 8 is provided side by side with the upper connecting member 6 and the base plate 4a, and a spacer 7 is fixed to the front side of the diagonal horizontal frame 1 with a space therebetween. A plurality of energy-reducing ropes 13 are stretched in a plurality of stages with a tube material 8 and a spacer 7 at an up-down interval. Rockfalls, avalanches and the like are further buffered and received by the group of energy-reducing ropes 13 and guided to the left and right.

Further, a protection wire mesh 13 is stretched on the reinforcing beam 3c or the like by an appropriate means as shown in the figure on almost the entire rear side of the pointed protection fence 10, and the protection wire mesh 13 causes falling rocks, avalanches, etc. Prevents the structure from dropping directly on the lower structure, thereby further enhancing overall protection performance and reliability.

The suspended pointed guard fence of the present invention has a scale corresponding to the size of the structure to be protected, the shape of the slope, the falling rock, the avalanche, etc. as described above. Repair and management can be easily performed by replacing or increasing the rope.

In the above-described embodiment, the base plates 4a, 4b of the columns 2, 5 are anchored to the slopes by anchor rods as necessary to increase the fixing force, or to reduce the force of the rope 1 for energy reduction.
3 can be provided between the upper and lower cross beams 1 so as to be in various modes such as preventing falling rocks, avalanches and the like.

[0020]

As described above, according to the present invention, a plurality of pointed cross beams reinforced by reinforcing beams by connecting diagonal cross beams to the left and right of the cusp are fixed to a plurality of columns with a base plate in a plurality of steps. The pointed guard fence formed by this method has a simplified and lighter fence structure and is easily placed on the slope, and the point and both wings of the pointed guard fence are suspended and supported by a plurality of suspension ropes. It is easily constructed as a suspended pointed guard fence. In addition, this pointed guard fence is hung and supported by a hanging rope, and the two wings formed by the pointed cross beams effectively buffer and receive rockfalls, avalanches, etc., moderately decelerate and smoothly move left and right. The protection performance and reliability as well as the workability have been significantly improved, for example by preventing the falling of the fence due to the outflow or collapse of the slope.

Also, a plurality of energy-reducing ropes are stretched in a plurality of steps at a vertical interval substantially in front of the pointed guard fence to further buffer rockfalls, avalanches, etc., to guide them to the left and right, and A protective wire mesh is installed almost entirely on the rear side of the guard fence to prevent falling rocks and avalanches on the structure to be protected, thereby further enhancing overall protection performance and reliability.

Further, a pointed guard fence is selected in accordance with a structure to be protected, a slope, a falling rock, an avalanche, or the like, and the number of hanging ropes is increased or decreased, so that the corresponding required protection performance is exhibited. It is easily constructed as a suspended pointed guard fence, and can be repaired and managed as needed.

[Brief description of the drawings]

FIG. 1 is a plan view (A) and a side view (B) showing an embodiment of the present invention.

FIG. 2 is a front view showing a conventional example (A) and a side view thereof (B).
It is.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Diagonal cross beam 2,5 Prop 3a-3d Reinforcement beam 4a-4d Base plate 9a-9e Suspension rope 10 Pointed protection fence 10a Pointed head 10b Both wings 13 Power reduction rope 15 Protective wire mesh 19a-19e Anchor S Slope

Claims (3)

(57) [Claims] 1. A plurality of pointed cross beams in which diagonal cross beams are connected to each other on the left and right sides of a cusp and the diagonal cross beams are connected to each other by a reinforcing beam, and are fixed to a plurality of columns with a base plate at a plurality of steps with vertical intervals. A pointed guard fence, and the pointed guard fence is arranged on a slope, and is supported by a plurality of suspension ropes anchoring the pointed head and both wings. Head guard fence. 2. The suspended pointed guard fence according to claim 1, wherein a plurality of energy-reducing ropes are stretched in a plurality of steps at approximately vertical intervals substantially in front of the pointed guarded fence. Features a hanging pointed guard fence. 3. The suspension type pointed guard fence according to claim 1, wherein a protective wire mesh is stretched almost all over a rear side of the pointed guard fence. Type pointed guard fence.