Canopy tunnel

Abstract

The utility model discloses a cantilever shed tunnel which comprises an upper-layer supporting system installed on a side slope, a lower-layer supporting system installed on the side slope and located below the upper-layer supporting system, and an upper-layer protective net with one side fixed to the upper-layer supporting system and the other side fixed to the portion, above the upper-layer supporting system, of the side slope. One side of the lower-layer protective net is fixed on the upper-layer supporting system, and the other side of the lower-layer protective net is fixed on the lower-layer supporting system; the side, away from the side slope, of the upper-layer protective net and the side, away from the side slope, of the lower-layer protective net incline downwards. The device has two-stage buffering performance, and can reduce the impact of rockfall on the shed tunnel. Meanwhile, a double-layer steel column supporting system is adopted, so that the stability of the shed tunnel is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of slope protection, and particularly relates to a shed cave. BACKGROUND

[0002] The existing shed cave protection net adopts single-column support or rigid arch structure, which has the following defects:

[0003] 1. Insufficient structural stability: the single-column support is easy to overturn under the impact of falling rocks, and the arch pre-buried foundation is difficult to construct in a complex slope.

[0004] 2. Single energy dissipation level: only relying on the deformation of the net surface to absorb energy, the connecting nodes of the steel column and the net surface are easy to break after impact.

[0005] Therefore, the present application provides a shed cave with two-stage buffer energy dissipation and stronger structural stability. SUMMARY

[0006] To solve the above problems, the present application provides a shed cave with two-stage buffer energy dissipation and stronger structural stability.

[0007] The utility model discloses a shed cave, which comprises an upper support system installed on a slope, a lower support system installed on the slope below the upper support system, an upper protection net fixed on one side of the upper support system and on the other side of the upper support system on the slope above the upper support system, and a lower protection net fixed on one side of the upper support system and on the other side of the lower support system; the side of the upper protection net away from the slope and the side of the lower protection net away from the slope are both inclined downward.

[0008] The utility model discloses a shed cave, which comprises an upper support system installed on a slope, a lower support system installed on the slope below the upper support system, an upper protection net fixed on one side of the upper support system and on the other side of the upper support system on the slope above the upper support system, and a lower protection net fixed on one side of the upper support system and on the other side of the lower support system; the side of the upper protection net away from the slope and the side of the lower protection net away from the slope are both inclined downward.

[0009] The upper support system comprises a plurality of upper steel columns installed on the slope at intervals along the width of the slope and a middle transverse support rope connected to the heads of all the upper steel columns; one side of the upper protection net is fixed on the middle transverse support rope, and the other side is fixed on the slope above the upper steel column.

[0010] The lower layer support system comprises a plurality of lower layer steel columns installed on the slope at intervals along the width of the slope and a lower layer transverse support rope connected in series to the column heads of all the lower layer steel columns; one side of the lower layer protective net is fixed to the lower layer transverse support rope and the other side is fixed to the middle layer transverse support rope.

[0011] A plurality of top bases are arranged on the slope above the upper layer steel columns at intervals along the width of the slope and are connected in series by a upper layer transverse support rope; the upper layer protective net is fixed to the upper layer transverse support rope.

[0012] A plurality of upper layer longitudinal support ropes are arranged at intervals between the upper layer transverse support rope and the middle layer transverse support rope and are supported below the upper layer protective net; a plurality of lower layer longitudinal support ropes are arranged between the middle layer transverse support rope and the lower layer transverse support rope and are supported below the lower layer protective net.

[0013] An upper layer inclined support rope is connected between the top base and the column head of the upper layer steel column, is supported below the upper layer protective net and extends along the diagonal of the upper layer protective net; a lower layer inclined support rope is connected between the column head of the upper layer steel column and the column head of the lower layer steel column, is supported below the lower layer protective net and extends along the diagonal of the lower layer protective net.

[0014] The upper layer longitudinal support ropes, the lower layer longitudinal support ropes, the upper layer inclined support rope and the lower layer inclined support rope can make the upper layer protective net and the lower layer protective net bear stronger impact force, thereby improving the durability of the utility model.

[0015] The awning further comprises a lower pull rope; one end of the lower pull rope is fixed to the column head of the lower layer steel column and the other end is fixed to the roadbed below by an anchor rod.

[0016] The upper layer steel column and the lower layer steel column are both installed on the slope by the steel column base and can swing relative to the steel column base.

[0017] The upper layer steel column and the lower layer steel column can swing, thereby adjusting the angle between the upper layer protective net and the lower layer protective net and the slope, making the utility model applicable to different slope terrains and improving the applicability of the utility model.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] (1) The utility model has two-stage buffering performance, can reduce the impact of rockfall to the shed hole.

[0020] (2) The upper layer steel column and the lower layer steel column can absorb the impact force of rockfall, so that the connecting joint between the steel column and the protective net is not easy to break.

[0021] Some of the additional features of the present application can be described in the following description. Some of the additional features of the present application will be apparent from the following description and the associated drawings, or can be learned by practice of the application as set forth in the following description or by practice of the examples as set forth in the following description. The features of the present application disclosed herein can be realized and attained by means of the instruments, methodologies, and combinations described in the following description and the associated drawings. BRIEF DESCRIPTION OF DRAWINGS

[0022] The accompanying drawings, which are incorporated herein to provide a further understanding of the application, constitute a part of the application, and the illustrative embodiments of the application and their descriptions serve to explain the application, and do not constitute a limitation on the application. In the drawings, the same reference numbers indicate the same components. Among them,

[0023] Figure 1 It is the installation side view of the utility model.

[0024] Figure 2 It is the top view of the utility model.

[0025] Figure 3 It is the schematic view of the steel column and the base connection of the utility model.

[0026] The reference numerals in the above drawings are: 1 - upper layer steel column, 2 - lower layer steel column, 3 - upper layer protective net, 4 - lower layer protective net, 5 - top base, 6 - steel column base, 7 - pull-down rope, 8 - anchor rod, 9 - upper transverse support rope, 10 - middle transverse support rope, 11 - lower transverse support rope, 12 - upper longitudinal support rope, 13 - upper inclined cable support rope, 14 - bolt, 15 - ear piece, 16 - lower longitudinal support rope, 17 - lower inclined cable support rope. DETAILED DESCRIPTION

[0027] In order to make the person skilled in the art better understand the present application, the technical scheme in the embodiments of the present application will be described clearly and completely in the following description combined with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments.

[0028] EMBODIMENTS

[0029] As Figure 1 , 2As shown, the embodiment discloses a shed cave which is installed on the side slope of the passing road, and the shed cave comprises an upper support system, a lower support system, an upper protective net 3 and a lower protective net 4.

[0030] The upper support system and the lower support system are both installed on the side slope, and the lower support system is below the upper support system. One side of the upper protective net 3 is fixed on the upper support system, and the other side is fixed on the side slope above the upper support system. One side of the lower protective net 4 is fixed on the upper support system, and the other side is fixed on the lower support system. In this way, the upper protective net 3 and the lower protective net 4 form two buffer surfaces.

[0031] In the implementation, the side of the upper protective net 3 away from the side slope and the side of the lower protective net 4 away from the side slope are both inclined downward, and the inclination angle of the side of the lower protective net 4 away from the side slope is greater than the inclination angle of the side of the upper protective net 3 away from the side slope. The lower end of the lower protective net 4 needs to extend to the safety area outside the passing road.

[0032] Through the above structure, the double buffer surface setting of the upper protective net 3 and the lower protective net 4 makes the shed cave of the embodiment have two-stage buffer effect. When the falling rock falls from the side slope, the falling rock first falls on the upper protective net 3 and is buffered and dissipated by the upper protective net 3. Under the guidance of the upper protective net 3, the falling rock falls from the upper protective net 3 to the lower protective net 4, realizes secondary dissipation, and finally falls along the lower protective net 4 to the safety area outside the road. It reduces the impact of the falling rock on the shed cave through two times of buffering and dissipation.

[0033] Specifically, the upper support system comprises a plurality of upper steel columns 1 installed on the side slope. All the upper steel columns 1 are distributed in the width direction of the side slope at intervals. The interval between the adjacent two upper steel columns 1 is set to 5-8m, and the embodiment is set to 5m. All the upper steel columns 1 are connected together through the middle transverse support rope 10 to form a whole.

[0034] In addition, the lower support system comprises a plurality of lower steel columns 2 installed on the side slope. All the lower steel columns 2 are also distributed in the width direction of the side slope at intervals. Similarly, the interval between the adjacent two lower steel columns 2 is set to 5-8m, and the embodiment is set to 5m, that is, the upper steel column 1 and the lower steel column 2 can be arranged opposite to each other during construction. All the lower steel columns 2 are connected together through the lower transverse support rope 11 to form a whole.

[0035] In addition, a plurality of top bases 5 are installed on the side slope above the upper steel column 1 at intervals in the width direction of the side slope. All the top bases 5 are connected together through the upper transverse support rope 9.

[0036] Through the above structure, the top base 5, the upper steel column 1, and the lower steel column 2 together form the support system for the cantilevered shed opening. One side of the upper protective net 3 is fixed to the middle transverse support rope 10, and the other side is fixed to the upper transverse support rope 9. One side of the lower protective net 4 is fixed to the lower transverse support rope 11, and the other side is fixed to the middle transverse support rope 10.

[0037] Both the upper steel column 1 and the lower steel column 2 can be made of rectangular hollow section steel, and they are installed at a predetermined height on the slope to ensure that the upper protective netting 3 and the lower protective netting 4 have a clearance of ≥4.5m from the road below. When installing the upper steel column 1 and the lower steel column 2, the angles between them and the slope can be set differently to meet the aforementioned inclination requirements of the upper protective netting 3 and the lower protective netting 4.

[0038] In specific setup, the mesh size of the upper protective net 3 and the lower protective net 4 is 80-150mm, the wire diameter is 4-6mm, the tensile strength is ≥1770MPa, and the surface is galvanized.

[0039] This embodiment employs a double-layer steel column support system, which makes the cantilevered shed less prone to overturning when impacted by falling rocks, thus improving its stability. Furthermore, compared to traditional rigid arch-frame sheds, its construction is simpler.

[0040] like Figure 2 As shown, several upper longitudinal support ropes 12 are spaced apart between the upper transverse support rope 9 and the middle transverse support rope 10, and the upper longitudinal support ropes 12 support the lower layer of protective netting 3. Similarly, several lower longitudinal support ropes 16 are spaced between the middle transverse support rope 10 and the lower transverse support rope 11, and the lower longitudinal support ropes 16 support the lower layer of protective netting 4. Upper longitudinal support ropes 12 can also be connected between the column head of the upper steel column 1 and its corresponding top base 5, and lower longitudinal support ropes 16 can also be connected between the column head of the lower steel column 2 and its corresponding upper steel column 1.

[0041] An upper diagonal support rope 13 connects the top base 5 to the column head of the upper steel column 1. The upper diagonal support rope 13 supports the upper protective net 3 below and extends along the diagonal of the upper protective net 3. Similarly, a lower diagonal support rope 17 connects the column head of the upper steel column 1 to the column head of the lower steel column 2. The lower diagonal support rope supports the lower protective net 4 below and extends along the diagonal of the lower protective net 4.

[0042] In this embodiment, the upper longitudinal support rope 12, the lower longitudinal support rope 16, the upper diagonal support rope 13, and the lower diagonal support rope 17 enable the upper protective net 3 and the lower protective net 4 to withstand stronger impact forces, thereby improving the durability of the cantilever shed opening.

[0043] When the width of the slope to be protected is wide, the upper protective net 3 and the lower protective net 4 can both be formed by splicing multiple protective net units through unloading buckles, at this time, the splicing positions between the protective net units are supported by the longitudinal support ropes to improve the strength of the splicing positions.

[0044] In addition, the upper steel column 1 and the lower steel column 2 can also be connected with reinforcing steel ropes, one end of the reinforcing steel rope is connected with the column head of the steel column, and the other end is fixed on the slope through an anchor rod, so that the upper steel column 1 and the lower steel column 2 are more firm.

[0045] The awning hole is also provided with a pull-down rope 7, one end of the pull-down rope 7 is fixed with the column head of the lower steel column 2, and the other end is fixed with the lower roadbed through an anchor rod 8. In addition, the upper steel column 1 and the lower steel column 2 are both installed on the slope through a steel column base 6, and the upper steel column 1 and the lower steel column 2 can swing relative to the steel column base 6. Figure 3 As shown in the figure, specifically, two pieces of ears 15 are arranged on the steel column base 6 at intervals, the lower end of the steel column is installed between the two pieces of ears 15, and then connected through a bolt 14, and the steel column can swing around the bolt as the fulcrum.

[0046] The upper steel column 1 and the lower steel column 2 of the embodiment can swing, the angle of the upper steel column 1 and the lower steel column 2 can be adjusted by adjusting the length of the pull-down rope 7, the upper longitudinal support rope, the lower longitudinal support rope and the corresponding reinforcing steel rope, and then the angle between the upper protective net 3 and the lower protective net 4 and the slope is adjusted, so that the utility model can be applied to different slope terrains, and the application performance of the utility model is improved. At the same time, the swingable upper steel column 1 and the lower steel column 2 can absorb the impact force of the falling rocks, so that the connection node between the steel column and the protective net is not easy to break.

[0047] It should be noted that all the features disclosed in the specification, or the steps in all the methods or processes disclosed, can be combined in any manner, except for the mutually exclusive features and / or steps.

[0048] In addition, the above specific embodiments are exemplary, and those skilled in the art can think of various solutions under the inspiration of the disclosure of the utility model, and these solutions also belong to the disclosed range of the utility model and fall within the protection scope of the utility model. Those skilled in the art should understand that the specification and the drawings of the utility model are illustrative and do not constitute a limitation on the claims. The protection scope of the utility model is defined by the claims and their equivalents.

Claims

1. A type of cantilever shed opening, characterized in that, It includes an upper support system installed on the slope, a lower support system installed on the slope and located below the upper support system, an upper protective net (3) fixed on the slope on one side and above the upper support system on the other side, and a lower protective net (4) fixed on the upper support system on one side and below the lower support system on the other side; the side of the upper protective net (3) away from the slope and the side of the lower protective net (4) away from the slope are both inclined downwards.

2. The cantilever shed opening according to claim 1, characterized in that, The upper support system includes several upper steel columns (1) installed at intervals along the width of the slope and a central transverse support rope (10) connected to the column heads of all the upper steel columns (1); one side of the upper protective net (3) is fixed to the central transverse support rope (10), and the other side is fixed to the slope above the upper steel columns (1).

3. The cantilever shed opening according to claim 2, characterized in that, The lower support system includes several lower steel columns (2) installed at intervals along the width of the slope and a lower transverse support rope (11) connected to the column heads of all the lower steel columns (2); one side of the lower protective net (4) is fixed to the lower transverse support rope (11), and the other side is fixed to the middle transverse support rope (10).

4. The cantilever shed opening according to claim 3, characterized in that, On the slope above the upper steel column (1), a number of top bases (5) are set at intervals along the width of the slope, and all the top bases (5) are connected in series by upper transverse support ropes (9); the upper protective net (3) is fixed on the upper transverse support ropes (9).

5. The cantilever shed opening according to claim 4, characterized in that, Several upper longitudinal support ropes (12) are provided at intervals between the upper transverse support rope (9) and the middle transverse support rope (10), and the upper longitudinal support ropes (12) are supported below the upper protective net (3); several lower longitudinal support ropes (16) are provided between the middle transverse support rope (10) and the lower transverse support rope (11), and the lower longitudinal support ropes (16) are supported below the lower protective net (4).

6. The cantilever shed opening according to claim 5, characterized in that, An upper inclined support rope (13) is connected between the top base (5) and the column head of the upper steel column (1). The upper inclined support rope (13) is supported below the upper protective net (3) and extends along the diagonal of the upper protective net (3). A lower inclined support rope (17) is connected between the column head of the upper steel column (1) and the column head of the lower steel column (2). The lower inclined support rope is supported below the lower protective net (4) and extends along the diagonal of the lower protective net (4).

7. The cantilever shed opening according to claim 3, characterized in that, It also includes a pull-down rope (7); one end of the pull-down rope (7) is fixed to the column head of the lower steel column (2), and the other end is fixed to the roadbed below by an anchor rod (8).

8. The cantilever shed opening according to claim 7, characterized in that, The upper steel column (1) and the lower steel column (2) are both installed on the slope through the steel column base (6), and the upper steel column (1) and the lower steel column (2) can swing relative to the steel column base (6).

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