Buffering and energy-consuming system shed tunnel protection structure

Abstract

The utility model belongs to the technical field of structure engineering, through intercepting, buffering to rockfall, thereby protecting shed cave main body structure, avoid the shed cave structure to be directly impacted by rockfall and take place damage, to improve the safety and service life of shed cave. The utility model discloses a kind of shed cave protection structure with buffering energy dissipation system, including vertically arranged frame column group and with column group solid joint vertical, horizontal frame beam;Vertical frame beam top lap has shed cave roof, forms a complete frame structure to bear load, and vertical support component is arranged at shed cave top, and vertical and frame longitudinal beam solid joint. Vertical support component and rock intercepting net are connected by spring, T-shaped sliding rod, steel wire suture rope, steel wire connecting rope, and jointly form flexible energy dissipation protection shed cave system. The shed cave protection system is blocked by impact load layer by layer through dissipation, conversion, absorption method, and the influence of rockfall impact load on shed cave main body structure is reduced to minimum.

Description

Technical Field

[0001] This utility model belongs to the field of structural engineering technology, specifically relating to a protective structure for a shed with a buffer energy dissipation system. Background Technology

[0002] Currently, there are two main protective measures for tunnel slopes or cutting slopes: slope reinforcement and tunnel protection structures. With the development of railways and highways, some tunnel slopes or cutting slopes can reach heights of 100 meters or more, with a large distribution of loose rocks and unstable boulders on the slope surface, and some slopes approaching vertical. In such cases, slope reinforcement schemes become impractical due to construction technology and economic constraints. Tunnel protection structures then play an irreplaceable role. However, as the protection height increases, the likelihood of tunnel structures being damaged or destroyed by falling rocks also increases significantly; numerous cases of tunnels being damaged by falling rocks exist. Utility Model Content

[0003] This utility model provides a protective structure for a tunnel with a buffer energy dissipation system. By intercepting and buffering falling rocks, it protects the main structure of the tunnel and prevents the tunnel structure from being damaged by direct impact from falling rocks, thereby improving the safety and service life of the tunnel.

[0004] Therefore, the present invention adopts the following technical solution: A protective structure for a shed with a buffer energy dissipation system includes a frame structure formed by multiple rows of vertical, horizontal and longitudinal frame columns. A shed roof slab is fixed to the top of the frame structure. A rockfall net is installed above the shed roof slab. Vertical support members are connected to the frame structure around the rockfall net and support the rockfall net. A buffer is also connected between the rockfall net and the vertical support members to provide cushioning for the rockfall net.

[0005] Furthermore, the buffer includes a cylindrical sleeve, a T-shaped sliding rod, and a spring. The spring is sleeved on the T-shaped sliding rod, and the T-shaped sliding rod passes through the cylindrical sleeve. When the T-shaped sliding rod slides along the cylindrical sleeve, it compresses the spring. One end of the cylindrical sleeve is connected to a vertical support member, and one end of the T-shaped sliding rod is connected to a rockfall barrier.

[0006] Furthermore, it also includes steel wire sewing ropes and steel wire connecting ropes. Each buffer is connected to the other by steel wire sewing ropes, which are arranged in a rectangular plane. The perimeter of the protective net is connected to the steel wire sewing ropes by steel wire connecting ropes.

[0007] Furthermore, the frame structure includes frame columns, longitudinal frame beams, and transverse frame beams, with each row of frame column groups consisting of two frame columns; adjacent rows of column groups are fixedly connected by longitudinal frame beams and transverse frame beams.

[0008] Furthermore, the vertical support member is fixed above the longitudinal frame beam.

[0009] The beneficial effects of this utility model are as follows: This invention employs a beam-column frame structure as the main skeleton to withstand various vertical and horizontal loads. The roof slab of the shed structure can be fabricated using either cast-in-place or precast methods. A certain number of vertical support members are installed on the top of the shed according to its width and structural dimensions. These vertical support members support the protective buffer system at the top of the shed, acting as the supporting structure to withstand the load generated at the support points after a rockfall impacts the buffer system. The buffer system's vibration-damping and energy-dissipating structure converts the vertical impact load into a near-horizontal load, transferring it to the upward-extending vertical support members on both sides of the shed, rather than allowing the rockfall to directly transfer the impact load to the top structure. This minimizes the impact on the structure. Attached Figure Description

[0010] Figure 1 This is a cross-sectional view of the energy-consuming conversion shed protection system of this utility model.

[0011] Figure 2 This is a longitudinal elevation view of the energy-consuming conversion shed protection system of this utility model.

[0012] Figure 3 This is a cross-sectional view of the top vibration reduction and energy dissipation structure of the energy-consuming conversion shed protection system of this utility model.

[0013] Figure 4 This is a plan view of the top vibration reduction and energy dissipation structure of the energy-consuming conversion shed protection system of this utility model.

[0014] Figure 5 This is a longitudinal sectional view of the energy-consuming buffer of this utility model.

[0015] Figure 6 This is a longitudinal and transverse cross-sectional view of the energy-consuming buffer of this utility model.

[0016] In the diagram: 1. Frame column, 2. Longitudinal frame beam, 3. Transverse frame beam, 4. Tunnel roof slab, 5. Vertical support component, 6. Rockfall barrier, 7. Buffer, 8. Spring, 9. Connector, 10. Cylindrical sleeve, 11. T-shaped sliding rod, 12. Steel wire sewing rope, 13. Steel wire connecting rope, 14. Connecting hole, 15. Tunnel portal. Detailed Implementation

[0017] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0018] like Figure 1 and 2As shown, a protective structure for a shed with a buffer energy dissipation system includes multiple rows of vertical frame column groups, each row of frame column groups consisting of two frame columns 1; adjacent rows of column groups are fixedly connected by longitudinal frame beams 2 and transverse frame beams 3, the frame columns 1, longitudinal frame beams 2 and transverse frame beams 3 form a frame structure, and a shed roof plate 4 is fixed to the top of the frame structure, which is used to provide protection for the space below.

[0019] Several vertical support members 5 are fixed longitudinally on both sides of the top of the shed roof slab 4, and the vertical support members 5 are fixedly connected to the longitudinal frame beam 2. Steel wire ropes 12 are arranged between the vertical support members 5, and the steel wire ropes 12 between four adjacent vertical support members 5 are arranged in a rectangle. A rockfall barrier 6 is suspended within this rectangle by steel wire connecting ropes 13. Sufficient vertical space is left between the shed roof slab 4 and the rockfall barrier 6 to ensure that falling rocks, after compressing the rockfall barrier 6 and causing vertical deformation, do not touch the shed roof slab 4. The impact load of falling rocks on the top of the shed is directly borne by the rockfall barrier 6.

[0020] To enhance the buffering capacity of the rockfall barrier 6, a buffer 7 is also installed between the steel wire rope 12 and the vertical support member 5. When the rockfall impact load is applied by the rockfall barrier 6, the buffer 7 is stretched to provide cushioning. The buffer 7 includes a connector 9, a cylindrical sleeve 10, and a spring 8. The vertical support member 5 is connected to the cylindrical sleeve 10 via the connector 9. The spring 8 is installed inside the cylindrical sleeve 10. The spring 8 is connected to the steel wire connecting rope 13 through a connecting hole 14. The steel wire connecting rope 13 is connected to the rockfall barrier 6 via the steel wire rope 12. The steel wire connecting rope 13 transfers the load to the T-shaped sliding rod 11 through the connecting hole 14. When the T-shaped sliding rod 11 receives the impact tension, it compresses the spring 8. The spring 8 undergoes significant compression deformation after being compressed, thus dissipating the impact energy.

[0021] The deployment method of this utility model is as follows: When setting up the tunnel protection system on the slope at the tunnel entrance, the location of the frame column 1 is determined based on the geological conditions of the slope. Then, longitudinal frame beams 2 and transverse frame beams 3 are constructed according to the construction drawings. Next, the tunnel roof slab 4 is constructed, reserving positions for the vertical support components 5 on the longitudinal beams during construction. Finally, the vertical support components 5 located on the longitudinal frame beams 2, as well as the rockfall net 6 and buffer 7, are constructed.

[0022] The impact load of falling rocks on the top of the tunnel is directly borne by the rockfall barrier 6. Firstly, the flexible deformation of the barrier 6 itself dissipates some of the falling rock energy. Secondly, the impact energy is further reduced by the buffer 7 connected to it. When a rock impacts the barrier 6, the impact load is transferred to the steel wire connecting rope 13 via the steel wire stitching rope 12. The steel wire connecting rope 13 then transfers the load to the T-shaped sliding rod 11 through the connecting hole 14. Upon receiving the impact tension, the T-shaped sliding rod 11 compresses the spring 8, causing it to undergo significant compression deformation and dissipate the impact energy. Simultaneously, the compressed spring 8 transfers the tension to the cylindrical sleeve 10, which then transfers the tension to the vertical support member 5 via the connector 9. The vertical support member 5 then transfers the load to the longitudinal frame beam 2, which in turn transfers the load to the frame column 1. This completes the dissipation, conversion, and force transfer of impact energy, achieving the protective function of the main structure under impact loads.

Claims

1. A protective structure for a shed with a buffer energy dissipation system, characterized in that, The frame structure is formed by multiple rows of vertical, horizontal and longitudinal frame columns (1). The top of the frame structure is fixed with a shed top plate (4). A rock barrier net (6) is provided above the shed top plate (4). Vertical support members (5) are connected to the frame structure around the rock barrier net (6). The vertical support members (5) support the rock barrier net (6). A buffer (7) is also connected between the rock barrier net (6) and the vertical support members (5). The buffer (7) is used to provide buffer for the rock barrier net (6).

2. The protective structure for a shed with a buffer energy dissipation system according to claim 1, characterized in that, The buffer (7) includes a cylindrical sleeve (10), a T-shaped sliding rod (11) and a spring (8). The spring (8) is sleeved on the T-shaped sliding rod (11), and the T-shaped sliding rod (11) passes through the cylindrical sleeve (10). When the T-shaped sliding rod (11) slides along the cylindrical sleeve (10), it compresses the spring (8). One end of the cylindrical sleeve (10) is connected to a vertical support member (5), and one end of the T-shaped sliding rod (11) is connected to a rockfall net (6).

3. The protective structure for a shed with a buffer energy dissipation system according to claim 2, characterized in that, It also includes a steel wire sewing rope (12) and a steel wire connecting rope (13). Each buffer (7) is connected to the other by the steel wire sewing rope (12). The steel wire sewing rope (12) is arranged in a rectangular plane. The protective net is connected to the steel wire sewing rope (12) by the steel wire connecting rope (13) around its perimeter.

4. The protective structure for a shed with a buffer energy dissipation system according to claim 1, characterized in that, The frame structure includes frame columns (1), longitudinal frame beams (2) and transverse frame beams (3). Each row of frame columns consists of two frame columns (1). The adjacent rows of column groups are fixedly connected by longitudinal frame beams (2) and transverse frame beams (3).

5. The protective structure for a shed with a buffer energy dissipation system according to claim 4, characterized in that, The vertical support member (5) is fixed above the longitudinal frame beam (2).

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