Cable-supported sound insulation barrier

Abstract

The invention relates to the technical field of noise control, in particular to a cable-supported sound insulation barrier. The sound insulation screen comprises side sound insulation screens arranged on the two sides of a road and a bridge and further comprises a top sound insulation screen arranged above the road and the bridge, the top sound insulation screen comprises a bearing cable net, a main frame, side frames and sound insulation plates, the main frame comprises main stand columns and main beams, and the main stand columns are arranged in the middle of the road and the bridge at intervals in the longitudinal direction of the road and the bridge; the girders are fixedly arranged at the upper parts of the main upright posts along the longitudinal direction of the road bridge; the side frame comprises side stand columns and side beams, the side stand columns are fixedly arranged on the edges of a road bridge at intervals in the longitudinal direction of the road bridge, and the side beams are fixedly arranged on the tops of the side stand columns in the longitudinal direction of the road bridge. The bearing cable net comprises a plurality of main inhaul cables, the main inhaul cables roughly extend in the transverse direction of the road bridge, the two ends of each main inhaul cable are fixed to the corresponding main beam and the corresponding edge beam respectively, the main inhaul cables are arranged at intervals in the longitudinal direction of the road bridge, and the sound insulation plates are arranged on the bearing cable net. The method can be widely applied to noise control projects in the traffic and transportation fields such as highways, railways, subways and high-speed rails.

Description

Technical Field

[0001] The invention belongs to the technical field of noise control, and in particular relates to a sound insulation barrier for blocking road or railway noise. Background Art

[0002] Over the years, the rapid development of my country's automobile industry and the continuous improvement of road infrastructure have provided great convenience for people's production and life. However, various vehicles will generate strong noise during operation on roads or railways. When they are close to villages or residential buildings, if they are not properly managed, they will cause environmental complaints. In order to reduce the impact of vehicle operation noise on the surrounding environment, sound-absorbing barriers are usually set up on both sides of roads or railways that pass through sensitive sections such as bridges, residential areas or commercial areas to achieve sound insulation and noise reduction. Generally speaking, the higher the sound insulation screen, the larger the surrounding surface, the larger the sound shadow area, and the better the sound insulation and noise reduction effect. Due to the limited height of ordinary upright sound insulation screens and the insufficient control range of noise, many sections in the project need to use fully enclosed sound insulation screens to improve the sound insulation effect and meet environmental protection requirements.

[0003] In practice, it is found that, on the one hand, the existing fully enclosed sound insulation screens mostly use bending-resistant steel beams to bear the weight of the sound insulation board (hereinafter referred to as rigidly supported sound insulation barriers), and the span is large, so the weight itself is very large, the steel beam size is large, and more steel is consumed; on the other hand, as the speed of vehicles is getting higher and higher, the speed of cars reaches 120km / h, the speed of subways and urban railways reaches 100-150km / h, and the speed of high-speed railways reaches 160-350km / h or more. When vehicles pass at high speed, the change in air pressure will form an alternating exciting force of tension and suction, especially when the front of the vehicle enters the The wind pressure generated when the train enters and leaves the rear of the train causes the sound-absorbing and sound-insulating barrier to vibrate strongly, which can easily cause fatigue damage to the components or connecting structures of the sound-absorbing and sound-insulating barrier. In order to resist the damage caused by this alternating excitation force, the steel frame must also have high strength; in particular, the area of ​​the fully enclosed vibration isolation screen is large, and according to the differences in regional climate, it is also necessary to consider the adverse effects of external loads such as typhoons, rain and snow. The above problems force the steel frame to further increase the amount of steel used. Therefore, the cost of this type of fully enclosed sound insulation screen remains high, which seriously affects the promotion and application of fully enclosed sound insulation screen technology. In addition, for rail bridges, the rigidly supported sound insulation screen will produce vibration response with the vibration of the train due to its high rigidity, emitting large secondary noise. Summary of the invention

[0004] The purpose of the present invention is to overcome the above-mentioned defects and provide a cable-supported sound insulation barrier which has good economy, low secondary noise and is not easy to be damaged.

[0005] The cable-supported sound insulation barrier of the present invention is realized as follows: it includes side sound insulation screens arranged on both sides of the road bridge, and also includes a top sound insulation screen arranged above the road bridge, the top sound insulation screen includes a load-bearing cable net, a main frame, a side frame and a sound insulation board, the main frame includes a main column and a main beam, the main column is arranged at intervals in the middle of the road bridge along the longitudinal direction of the road bridge, and the main beam is fixedly arranged on the upper part of the main column along the longitudinal direction of the road bridge; the side frame includes a side column and a side beam, the side column is fixedly arranged at the edge of the road bridge along the longitudinal direction of the road bridge, and the side beam is fixedly arranged on the top of the side column along the longitudinal direction of the road bridge; the load-bearing cable net includes a plurality of main cables, the main cables extend roughly in the transverse direction of the road bridge and the two ends are respectively fixed on the main beam and the side beam, the main cables are arranged at intervals in the longitudinal direction of the road bridge, and the sound insulation board is arranged on the load-bearing cable net.

[0006] In order to improve stability, the cable-supported sound insulation barrier of the present invention may further include a tensioning cable, one end of which is fixedly connected to the upper part of the side column, and the other end of which is connected to a connector fixedly arranged on the road and bridge foundation outside the side column. By optimizing the tension of the tensioning cable, the pulling force on the side column generated by the deadweight of the sound insulation board through the main cable can be balanced, and the bending moment in the cross section of the road and bridge on the side column can be reduced, so that the side column is mainly subjected to compression, thereby reducing its size and the amount of steel used.

[0007] In addition, the main frame may also include anti-thrust main diagonal braces or anti-thrust main diagonal cables, the two ends of which are respectively connected to adjacent main columns, and the anti-thrust main diagonal braces or anti-thrust main diagonal cables are arranged in an X shape or a zigzag shape; in addition, the side frame may also include anti-thrust side diagonal braces or anti-thrust side diagonal cables, the two ends of which are respectively connected to adjacent side columns, and the anti-thrust side diagonal braces or anti-thrust side diagonal cables are arranged in an X shape or a zigzag shape; furthermore, the load-bearing cable net may also include longitudinal sub-cables or longitudinal sub-beams, the longitudinal sub-cables or longitudinal sub-beams are arranged to extend longitudinally along the road bridge, the longitudinal sub-cables or longitudinal sub-beams are arranged at intervals from each other in the transverse direction of the road bridge, and are fixedly connected to the main cables at the intersection with the main cables. Of course, the load-bearing cable net can also include anti-thrust secondary diagonal braces or anti-thrust secondary diagonal cables, which are arranged in an X-shape or a zigzag shape between the main beam and the side beam, and are fixedly connected to the main cables, or the main cables and longitudinal secondary cables, or the main cables and longitudinal secondary beams at their intersection. The main function of this technical solution of adding various types of inclined cables or braces is that by arranging anti-thrust main inclined braces or anti-thrust main inclined cables in the main frame and anti-thrust side inclined braces or anti-thrust side inclined cables in the side frame, the main columns and side columns can be significantly strengthened and supported against push and shear; after anti-thrust secondary inclined braces or anti-thrust secondary inclined cables are arranged in the load-bearing cable net, the wind force and seismic response force acting on the sound insulation board in the top sound insulation screen can be fully transmitted to the main beam and side beam through the anti-thrust secondary inclined braces or anti-thrust secondary inclined cables, and then transmitted to the road and bridge foundation through the main columns and side columns. Since the anti-thrust and anti-shear capabilities of the main columns and side columns have been significantly enhanced, the size and steel consumption of the main columns and side columns can be greatly reduced. Similarly, for the wind force and seismic response force acting on the side sound insulation board of the side sound insulation screen, the anti-push and anti-shear capacity of the side columns is enhanced by anti-push side diagonal braces or anti-push side diagonal cables, so the size of the side columns and the amount of steel used can also be effectively reduced.

[0008] In the cable-supported sound barrier of the present invention, a plurality of sound insulation boards are provided, and the sound insulation boards are arranged in an array along the longitudinal direction and the transverse direction of the road bridge. Both ends of each sound insulation board along the longitudinal direction of the road bridge are respectively fixed on the main cable.

[0009] If necessary, the cable-supported sound barrier of the present invention also includes a middle sound insulation screen, which includes a middle sound insulation board and an intermediate support frame. The middle sound insulation board is arranged in the middle support frame, and the two side facades of the middle sound insulation board corresponding to the roads on both sides are provided with sound absorption structures. Among them, the middle support frame can be independently fixed on the road bridge, or the middle support frame and the main frame can be integrated. Based on the same technical principle, the side sound insulation screen can be composed of side sound insulation boards and side support frames, and the side support frame is independently fixed on the road bridge or the side support frame and the side frame can be integrated. The side sound insulation board is arranged in the side support frame, and the inner side facade of the side sound insulation board corresponding to the internal road is provided with a sound absorption structure. Of course, in order to further improve the sound insulation and noise reduction effect, at least part of the sound insulation boards in the top sound insulation screen can also be provided with a sound absorption structure on the inner surface corresponding to the internal road. In this way, the noise generated by cars or trains will be fully absorbed and attenuated inside the cable-supported sound insulation barrier of the present invention, avoiding amplification of the sound inside the cable-supported sound insulation barrier due to multiple reflections. Therefore, it has better sound insulation and noise reduction effects for noise-sensitive objects such as nearby residential areas, business areas, schools or hospitals.

[0010] A damping device is arranged between the main cable and the main column or / and between the main cable and the side column, and the damping device includes a viscous damper, an eddy current damper or a small hole throttling damper. The damping device can absorb the vibration or wave-like oscillation of the top sound insulation screen caused by the running wind and the natural strong wind, and improve the service life of each component in the cable-supported sound insulation barrier of the present invention. By the same token, a damping device can also be arranged between the main column and the longitudinal sub-cable or / and between the side column and the longitudinal sub-beam, or between the main column and the longitudinal sub-beam or / and between the side column and the longitudinal sub-beam, and the damping device includes a viscous damper, an eddy current damper or a small hole throttling damper. It should be pointed out that, especially when the damping device is arranged between the longitudinal sub-beam and the main column or the side column, its control range is wider and the energy consumption and vibration reduction effect is more prominent.

[0011] The cable-supported sound barrier of the present invention may also include a ventilation and pressure relief channel. The ventilation and pressure relief channel may be arranged in various forms. For example, the ventilation and pressure relief channel is arranged between the side sound insulation screen and the top sound insulation screen, and a sound shielding extension section is arranged on the top sound insulation screen, and the sound shielding extension section covers the top of the side sound insulation screen in both vertical and horizontal projections; in addition, the ventilation and pressure relief channel may also be arranged between the top sound insulation screen and the main beam. In order to prevent noise from leaking out of the ventilation and pressure relief channel between the top sound insulation screen and the main beam, a shielding sound insulation screen is arranged below the ventilation and pressure relief channel, and the projection of the shielding sound insulation screen on the surface of the road and bridge is partially overlapped with the projection of the top sound insulation screen on the surface of the road and bridge. The function of the ventilation and pressure relief channel is as the name implies, which can form natural ventilation in the cable-supported sound insulation barrier of the present invention, discharge automobile exhaust, reduce the internal temperature, and reduce the thrust generated by wind pressure along the lateral direction of the road and bridge; wherein, the ventilation and pressure relief channels are arranged in the center and on both sides at the same time, and a chimney effect can be generated when the sun is irradiated, so as to increase air circulation and reduce the temperature inside the cable-supported sound insulation barrier of the present invention.

[0012] As two typical special cases, one technical solution is that a connecting beam can also be set between the side columns set on both sides of the road bridge, the main frame is fixed on the connecting beam, the main column is fixed on the middle of the connecting beam corresponding to the middle of the road bridge, and the main beam is fixed on the top of the main column; the second technical solution is that the top sound insulation screen also includes a suspended frame, the suspended frame is composed of a horizontal tie rod and an oblique support rod, the horizontal tie rod and the oblique support rod are symmetrically arranged on both sides of the main column, the two ends of the horizontal tie rod are respectively connected to the lower part of the main column and the top of the side column, the two ends of the oblique support rod are respectively connected to the upper part of the main column and the top of the side column, the main beam is fixed on the main column and arranged above the connection point between the horizontal tie rod and the main column. These two solutions are suitable for the scene where the main column in the middle of the road bridge cannot be put on the ground, and can provide a more spacious interior space and vision.

[0013] Photovoltaic panels, integrated photovoltaic films, or photovoltaic coatings may be provided on the exposed surfaces of the sound insulation boards in the cable-supported sound insulation barrier of the present invention. By converting solar energy into electrical energy for use in lighting and ventilation inside the cable-supported sound insulation barrier, it is more economical and environmentally friendly.

[0014] It should be noted that the sound insulation board, the middle sound insulation board or the side sound insulation board in the present invention can be made of various materials, and can be at least one of metal perforated fiber composite sound absorbing board, alloy foam sound absorbing board, artificial fiber sound absorbing board, sandstone sound absorbing board, tempered glass micro-perforated board, transparent PC sound insulation board or calcium silicate sound insulation board. Generally, a combination of transparent and non-transparent sound insulation board is used to ensure the natural light brightness in the cable-supported sound insulation barrier of the present invention.

[0015] Compared with the existing sound insulation screen, the cable-supported sound insulation barrier of the present invention uses a load-bearing cable net to support the sound insulation board in the top sound insulation screen, which greatly reduces the amount of steel used compared with the traditional steel frame, and the construction cost is greatly reduced; in addition, due to the small weight of the load-bearing cable net, the corresponding load-bearing requirements for the main frame and the side frame are greatly reduced, which is conducive to optimizing and reducing the size and steel usage of the main frame and the side frame, and further reducing the construction cost; the force of the overall structure is more reasonable. On the one hand, in the cross section of the road and bridge, the main column is subjected to a small bending moment due to the symmetrical force, and the side column is subjected to a greatly reduced bending moment due to the balancing effect of the tension cable and the main cable. On the other hand, in the longitudinal direction of the road and bridge, the horizontal force is also converted into the tension or pressure of the diagonal brace and diagonal cable with the help of various types of diagonal braces and diagonal cables, and the bending moment of the main column and the side column is greatly reduced , so the size and weight of the main column and the side column are also greatly reduced; at the same time, since the total weight of the cable-supported sound barrier of the present invention is greatly reduced, the additional load imposed on the road bridge is also smaller, which is conducive to improving the service life and actual bearing capacity of the road bridge; in addition, the setting of the ventilation and pressure relief channel forms natural ventilation, which is conducive to cooling and exhausting exhaust gas, and reduces the thrust generated by wind pressure along the lateral direction of the road bridge; in addition, since the load-bearing cable net is a set of flexible systems, it has strong deformation adaptability when dealing with the alternating exciting force generated by the high-speed passing of vehicles and the vibration caused by the inlet and outlet wind pressure. In particular, after the damping device is added, the vibration energy can be quickly attenuated, effectively avoiding the problems of local fatigue damage caused by the concentration of force on the rigid frame of the traditional sound barrier at the connection part, greatly reducing the difficulty and investment of later operation and maintenance. In addition, the sound insulation board in the top sound insulation screen is supported on a flexible load-bearing cable net, which has a lower natural frequency and will not produce coupling resonance with the vibration of the bridge, so it will not emit secondary noise.

[0016] To sum up, the cable-supported sound barrier of the present invention not only has good sound insulation function, but also has good vibration suppression effect. It has a simple structure, good economy, small secondary noise, is not easy to damage, has a long service life, good applicability, high cost performance, safety and reliability, and can be widely used in noise control projects in transportation fields such as roads, railways, subways, and high-speed railways. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is one of the structural schematic diagrams of the cable-supported sound insulation barrier of the present invention.

[0018] Figure 2 for Figure 1 A partial view of the.

[0019] Figure 3 for Figure 1 Partial view in direction B.

[0020] Figure 4 for Figure 1 Partial view in the direction of C.

[0021] Figure 5 This is the second structural schematic diagram of the cable-supported sound insulation barrier of the present invention.

[0022] Figure 6 for Figure 5 Partial view in the D direction.

[0023] Figure 7 for Figure 5 Partial view in the E direction.

[0024] Figure 8 for Figure 5 Partial view in the F direction.

[0025] Fig. 9 This is the third structural schematic diagram of the cable-supported sound insulation barrier of the present invention.

[0026] Fig.10 for Fig. 9 Partial view in the G direction.

[0027] Fig.11 for Fig. 9 Partial view in the H direction.

[0028] Fig.12 This is the fourth structural schematic diagram of the cable-supported sound insulation barrier of the present invention.

[0029] Fig.13 This is the fifth structural schematic diagram of the cable-supported sound insulation barrier of the present invention.

[0030] Fig.14 This is the sixth structural schematic diagram of the cable-supported sound insulation barrier of the present invention. DETAILED DESCRIPTION

[0031] Embodiment 1 like Figure 1 , Figure 2 , Figure 3 and Figure 4The cable-supported sound insulation barrier of the present invention includes side sound insulation screens arranged on both sides of the road bridge, and also includes a top sound insulation screen arranged above the road bridge, the top sound insulation screen includes a load-bearing cable net, a main frame, a side frame and a sound insulation board, the main frame includes a main column 1 and a main beam 2, the main column 1 is fixedly arranged in the foundation 7 in the middle of the road bridge at intervals along the longitudinal direction of the road bridge, the main beam 2 is fixedly arranged on the top of the main column 1 along the longitudinal direction of the road bridge, and an insulator 10 is arranged between adjacent main columns 1, and the insulator 10 is specifically an isolation green belt; the side frame includes side columns 3 and side beams 4, the side columns 3 are fixedly arranged at the edge of the road bridge at intervals along the longitudinal direction of the road bridge, and the side beams 4 are fixedly arranged along the longitudinal direction of the road bridge. It is arranged on the top of the side column 3; the load-bearing cable net includes a plurality of main cables 5, which extend roughly in the transverse direction of the road bridge and have their two ends respectively fixed on the main beam 2 and the side beam 4, and the main cables 5 are arranged spaced apart from each other in the longitudinal direction of the road bridge; a sound insulation board 6 is arranged on the load-bearing cable net, and a plurality of sound insulation boards are arranged, and the sound insulation boards 6 are arranged in an array in the longitudinal direction and transverse direction of the road bridge, and the two ends of each sound insulation board 6 in the longitudinal direction of the road bridge are respectively fixed on the main cables 5; the side sound insulation screen is composed of a side sound insulation board 9 and a side support frame, and the side sound insulation board is arranged in the side support frame. Specifically, the side column 3 is also used as the side support frame, that is, the side support frame is integrated with the side frame.

[0032] like Figure 1 As shown in , the road-bridge structure in this example is specifically a highway. When used, the noise generated by the vehicle 8 during the driving process inside the cable-supported sound insulation barrier of the present invention will be blocked and shielded by the side sound insulation board 9 in the side sound insulation screen and the sound insulation board 6 in the top sound insulation screen. In this way, the noise will be absorbed and attenuated inside the cable-supported sound insulation barrier of the present invention, avoiding the noise from being amplified due to multiple reflections inside the cable-supported sound insulation barrier of the present invention. Therefore, the noise intensity transmitted to the external environment is greatly reduced, which can effectively reduce the adverse effects of vehicle operation noise on the surrounding environment, and has better sound insulation and noise reduction effects for noise-sensitive objects such as nearby residential areas, business areas, schools or hospitals.

[0033] Compared with the existing sound insulation screen, the cable-supported sound insulation barrier of the present invention uses a load-bearing cable net to support the sound insulation board in the top sound insulation screen, which greatly reduces the steel consumption compared with the traditional steel frame, and greatly reduces the construction cost; in addition, due to the small weight of the load-bearing cable net, the corresponding load-bearing requirements for the main frame and the side frame are greatly reduced, which is conducive to optimizing and reducing the size and steel consumption of the main frame and the side frame, and further reducing the construction cost. At the same time, due to the significant reduction in the total weight of the cable-supported sound insulation barrier of the present invention, the additional load imposed on the road bridge is also smaller, which is conducive to improving the service life and actual bearing capacity of the road bridge; in addition, since the load-bearing cable net is a set of flexible systems, when dealing with the alternating excitation force generated by the high-speed passing of vehicles and the vibration caused by the inlet and outlet wind pressure, it has strong deformation adaptability, effectively avoiding the problems of local fatigue damage caused by the concentrated force on the connection part of the rigid frame of the traditional sound insulation barrier, and greatly reducing the difficulty and investment of later operation and maintenance. In addition, the sound insulation board in the top sound insulation screen is supported on a flexible load-bearing cable net, which has a low natural frequency and will not produce coupled resonance with the vibration of the bridge, so it will not emit secondary noise.

[0034] To sum up, the cable-supported sound barrier of the present invention not only has good sound insulation function, but also has good vibration suppression effect. It has a simple structure, good economy, small secondary noise, is not easy to damage, has a long service life, good applicability, high cost performance, safety and reliability, and can be widely used in noise control projects in transportation fields such as roads, railways, subways, and high-speed railways.

[0035] It should be noted that the sound insulation board or edge sound insulation board described in the present invention can be made of various materials, and can be at least one of metal perforated fiber composite sound absorbing board, alloy foam sound absorbing board, artificial fiber sound absorbing board, sandstone sound absorbing board, tempered glass micro-perforated board, transparent PC sound insulation board or calcium silicate sound insulation board. Generally, a combination of transparent and non-transparent sound insulation board is used to ensure the natural light brightness inside the cable-supported sound insulation barrier of the present invention, so as to achieve the purpose of saving electric energy.

[0036] Embodiment 2 like Figure 5 , Figure 6 , Figure 7 and Figure 8The cable-supported sound insulation barrier of the present invention shown in the figure is different from the first embodiment in that the road-bridge structure is specifically an urban railway, and the side sound insulation screen is composed of an independently arranged side support frame 14 and a side sound insulation board 9, the side sound insulation board 9 is arranged in the side support frame 14, and the side sound insulation board 9 is provided with a sound absorbing structure 15 on the inner side facade corresponding to the internal road; in addition, it also includes a tensioning cable 11, one end of the tensioning cable 11 is fixedly connected to the upper part of the side column 3, and the other end is connected to a connecting piece 12 fixedly arranged on the road-bridge foundation 7 outside the side column 3; in addition, a damping device 13 is arranged between the main cable 5 and the main column 1, and the damping device 13 is specifically a small hole throttling damper; fourthly, the cable-supported sound insulation barrier of the present invention described in this example also includes a ventilation and pressure relief channel, which is arranged between the sound insulation board 6 of the top sound insulation screen and the main beam 2, as shown in FIG. Figure 5 As shown in , the gap J between the two constitutes the ventilation and pressure relief channel; fifth, the side frame also includes an anti-push side diagonal brace 16, and the two ends of the anti-push side diagonal brace 16 are respectively connected to the adjacent side columns, and the anti-push side diagonal brace 16 is arranged in an X shape; sixth, the main frame also includes an anti-push main diagonal brace 17, and the two ends of the anti-push main diagonal brace 17 are respectively connected to the adjacent main columns, and the anti-push main diagonal brace 17 is arranged in a zigzag shape; seventh, the load-bearing cable net also includes a longitudinal auxiliary cable 18, and the longitudinal auxiliary cable 18 is arranged to extend longitudinally along the road bridge, and the longitudinal auxiliary cables are arranged to be spaced apart from each other in the transverse direction of the road bridge, and are fixedly connected to the main cable 5 at the intersection with the main cable 5.

[0037] Compared with the first embodiment, in the technical solution of the cable-supported sound insulation barrier described in this embodiment, the side column 3 is inclined outward, the stress state is more reasonable, and it can better withstand the tension of the main cable 5. In particular, after the tension cable 11 is added, the tension of the tension cable 11 is optimized, and the tension generated by the deadweight of the sound insulation board 6 on the side column 3 through the main cable 5 can be balanced, and the bending moment in the cross section of the road and bridge on the side column 3 can be reduced, so that it is mainly compressed, so that its size and steel consumption can be reduced; in addition, due to the addition of the damping Device 13, the damping device can absorb the vibration or wave-like oscillation of the top sound insulation screen caused by the running wind and natural strong wind, and improve the service life of each component in the cable-supported sound insulation barrier of the present invention. After the damping device is added, the alternating exciting force generated by the high-speed operation of the vehicle and the kinetic energy of the vibration caused by the inlet and outlet wind pressure can be quickly attenuated, effectively avoiding the problems of local fatigue damage caused by the concentrated force at the connection part of the rigid frame of the traditional sound insulation barrier, and greatly reducing the difficulty and investment of later operation and maintenance; the main frame is provided with an anti-thrust main diagonal brace, and the side frame is provided with an anti-thrust side diagonal brace, so that the main column and the side column can be significantly strengthened and supported against push and shear, which is conducive to reducing the size and steel consumption of the main column and the side column; after the longitudinal auxiliary cable is provided in the load-bearing cable net, the integrity of the load-bearing cable net is greatly improved, and the load-bearing sound insulation board is more stable and reliable; from the perspective of the stress of the overall structure, the stress of the overall structure of the technical solution described in this example is more reasonable. On the one hand, in the cross section of the road bridge, the main column is subjected to a small bending moment due to the symmetrical force, and the side column is subjected to tension. The balancing effect of the cable and the main cable greatly reduces the bending moment. On the other hand, in the longitudinal direction of the road bridge, the horizontal force is also converted into the tension or pressure of the diagonal braces and cables with the help of various types of diagonal braces and cables, and the bending moment of the main columns and side columns is greatly reduced. Therefore, the size and weight of the main columns and side columns are also greatly reduced; the role of the wind pressure relief channel is as the name suggests, which can form natural ventilation in the cable-supported sound insulation barrier of the present invention, discharge automobile exhaust, reduce the internal temperature, and reduce the thrust generated by wind pressure along the lateral direction of the road bridge.

[0038] Based on the technical principle of this example, the anti-thrust main diagonal braces in the cable-supported sound insulation barrier of the present invention can also be arranged in an X-shape. In addition to the anti-thrust main diagonal braces, the main frame can also be provided with anti-thrust main diagonal cables, and the two ends of the anti-thrust main diagonal cables are respectively connected to the adjacent main columns, and the anti-thrust main diagonal cables are arranged in an X-shape or a zigzag shape; similarly, the anti-thrust side diagonal braces in the side frame can also be arranged in a zigzag shape. In addition to the anti-thrust side diagonal braces, the side frame can also be provided with anti-thrust side diagonal cables, and the two ends of the anti-thrust side diagonal cables are respectively connected to the adjacent side columns, and the anti-thrust side diagonal cables are arranged in an X-shape or a zigzag shape; of course, in addition to the longitudinal sub-cables, longitudinal sub-beams can also be arranged in the load-bearing cable net, and the longitudinal sub-beams are arranged along the longitudinal extension of the road and bridge, and the longitudinal sub-beams are arranged at intervals in the transverse direction of the road and bridge, and are fixedly connected to the main cables at the intersection with the main cables; in addition, there are various damping devices that can be used in the present invention. In addition to the small hole throttling damper mentioned above, it can also be a viscous damper, an electric Eddy current dampers and other forms of dampers. It should be particularly pointed out that, in addition to being arranged between the main cable and the main column, the damping device can also be arranged between the main cable and the side column. Of course, the damping device can also be arranged between the main cable and the main column and between the main cable and the side column at the same time. Based on this technical principle, the damping device can also be arranged between the main column and the longitudinal sub-cable or / and between the side column and the longitudinal sub-beam, or between the main column and the longitudinal sub-beam or / and between the side column and the longitudinal sub-beam. The damping device includes a viscous damper, an eddy current damper or a small hole throttling damper. This setting method of the damping device has a larger control range and a better damping energy dissipation effect, which is beneficial to improve the service life of each component in the cable-supported sound insulation barrier of the present invention, and can also achieve good technical effects. These are simple changes based on the technical principles of the present invention, which are only explained in words here, and are all within the protection scope required by the present invention.

[0039] Embodiment 3 like Fig. 9 , Fig.10 and Fig.11 The cable-supported sound insulation barrier of the present invention shown in the figure is different from the second embodiment in that the road-bridge structure is specifically a railway bridge, the foundation 7 of the road-bridge is a bridge beam, one end of the tensioning cable 11 is connected to the top of the side column 3, and the other end is connected to the connecting piece 12 fixedly arranged on the foundation 7; in addition, it also includes a middle sound insulation screen, the middle sound insulation screen includes a middle sound insulation board 20 and a middle support frame 21, the middle sound insulation board 20 is arranged in the middle support frame 21, the middle sound insulation board 20 is provided with a sound absorbing structure 15 on both side facades corresponding to the roads on both sides, and the middle support frame 21 is independently fixed on the foundation 7 (not specifically shown in the figure); in addition, the inner surface of the sound insulation board 6 in the middle of the top sound insulation screen corresponding to the inner road is provided with a sound absorbing structure 15; fourth, as Fig.11As shown in , the load-bearing cable net also includes an anti-thrust auxiliary oblique cable 22, which is arranged in an X shape between the main beam 2 and the side beam 4, and is fixedly connected with the main cable 5 at their intersection; fifth, a shielding sound insulation screen 19 is provided below the ventilation and pressure relief channel at the gap J, and the projection of the shielding sound insulation screen 19 on the surface of the road bridge and the projection of the top sound insulation screen on the surface of the road bridge are partially overlapped; sixth, in addition to the ventilation and pressure relief channel at the gap J, a ventilation and pressure relief channel is also reserved at the gap K between the side sound insulation screen and the top sound insulation screen, and accordingly, a sound shielding extension section 27 is provided on the top sound insulation screen, and the sound shielding extension section 27 covers the top of the side sound insulation screen in both vertical and horizontal projections.

[0040] Compared with the second embodiment, in the technical solution described in this embodiment, since a middle sound insulation screen is added, and sound absorbing structures 15 are arranged outside the surface of both sides of the middle sound insulation board 20, and sound absorbing structures 15 are also arranged on the surface of the sound insulation board facing the inner side of the road of some top sound insulation screens, the ability to absorb vehicle running noise is stronger and the sound absorption and noise reduction effect is better; in addition, since anti-thrust auxiliary inclined cables are also arranged in the load-bearing cable net, the wind force and seismic response force acting on the sound insulation board in the top sound insulation screen can be fully transmitted to the main beam and the side beam through the anti-thrust auxiliary inclined cables, and then transmitted to the road bridge foundation through the main columns and the side columns. Since the anti-thrust and anti-shear capabilities of the main columns and the side columns have been significantly enhanced, the size and steel consumption of the main columns and the side columns can be greatly reduced. At the same time, The support of the sound insulation board 6 is also more stable and reliable, and the safety is better. In addition, since ventilation and pressure relief channels are arranged in the center and on both sides of the cable-supported sound insulation barrier of the present invention described in this example, a chimney effect can be generated when sunlight is irradiated, thereby increasing air circulation and reducing the temperature inside the cable-supported sound insulation barrier of the present invention. Furthermore, since the shielding sound insulation screen and the sound shielding extension section are added, noise can be effectively prevented from leaking from the ventilation and pressure relief channel, and the sound insulation and noise reduction effect is better. It should be particularly noted that the shielding sound insulation screen can also block rain, preventing rainwater from falling directly onto the lane inside the cable-supported sound insulation barrier of the present invention and interfering with driving. When used, the shielding sound insulation screen can be used to collect rainwater and guide it to the downpipe (not specifically shown in the figure) arranged at the main column for discharge.

[0041] It should be noted that in this example, the sound-absorbing structure is provided on the inner surface of some sound insulation boards 6 in the top sound insulation screen as an example. According to the specific structure of the top sound insulation screen, the sound-absorbing structure can also be provided on the inner surface of all sound insulation boards. In addition, the sound-absorbing structure can also be provided on the inner surface of the shielding sound insulation screen 19. In addition, based on the technical principle of this example, the anti-thrust auxiliary oblique cable can be provided in a zigzag shape in addition to being provided in an X shape. In addition to the anti-thrust auxiliary oblique cable, an anti-thrust auxiliary oblique brace can also be provided in the load-bearing cable net. The anti-thrust auxiliary oblique brace is provided in an X shape or a zigzag shape between the main beam and the side beam, and is fixedly connected with the main cable at its intersection. Of course, the load-bearing cable net is also provided with a technical solution of a longitudinal auxiliary cable or a longitudinal auxiliary beam. The anti-thrust auxiliary oblique brace or the anti-thrust auxiliary oblique cable and the longitudinal auxiliary cable or the longitudinal auxiliary beam can also be fixedly connected with each other at the intersection of the two to improve the integrity and stability. The above technical contents are simple changes based on the technical principle of the present invention. They are only described in words here without additional drawings. They are also within the protection scope required by the present invention.

[0042] Embodiment 4 like Fig.12 The cable-supported sound barrier of the present invention shown in the figure is different from the first embodiment in that a connecting beam 23 is arranged between the side columns 3 arranged on both sides of the road bridge, and the main frame is fixedly arranged on the connecting beam 23, wherein the main column 1 is fixedly arranged in the middle of the connecting beam 23 corresponding to the middle of the road bridge, and the main beam 2 is fixedly arranged on the top of the main column 1; in addition, a photovoltaic power generation film 24 is integrally arranged on the exposed surface of the sound insulation board 6; in addition, the insulator 10 is specifically an isolating low wall.

[0043] Compared with the first embodiment, in the technical solution described in this example, the main column is arranged on the connecting beam, which can well adapt to the application scenario where the main column cannot touch the ground in the middle of the road bridge, and provide a more spacious internal space and field of vision; in addition, after a photovoltaic power generation film is added to the exposed surface of the sound insulation board, the photovoltaic power generation film can convert solar energy into electrical energy for internal lighting and ventilation of the cable-supported sound insulation barrier, which is more economical and environmentally friendly.

[0044] Of course, based on the technical principles of this example, in addition to adding photovoltaic power generation films, other solar energy utilization facilities such as photovoltaic power generation panels or photovoltaic power generation coatings can also be set on the exposed surface of the sound insulation board to achieve the same technical effects. Here, only textual explanations are given, and they are all within the scope of protection required by the present invention.

[0045] Embodiment 5 like Fig.13The cable-supported sound insulation barrier of the present invention shown in the figure is different from the fourth embodiment in that the top sound insulation screen also includes a suspended frame, which is composed of a transverse tie rod 25 and an oblique support rod 26, and the transverse tie rod 25 and the oblique support rod 26 are symmetrically arranged on both sides of the main column, respectively. The two ends of the transverse tie rod 25 are respectively connected to the lower part of the main column 1 and the top of the side column 3, and the two ends of the oblique support rod 26 are respectively connected to the upper part of the main column 1 and the top of the side column 3. The main beam 2 is fixed on the main column 1 and arranged above the connection point between the transverse tie rod 25 and the main column 1. Specifically, the main beam 2 is also arranged above the connection point between the oblique support rod 26 and the main column 1; in addition, the insulator 10 is specifically a short isolation pier.

[0046] Compared with the fourth embodiment, in the technical solution described in this example, a stable triangular support structure is formed by using transverse tie rods, oblique support rods and main columns, which can effectively decompose the weight of the top sound insulation screen to the side columns. The main columns do not bear a large load, so there is no need to set very thick transverse tie rods and oblique support rods, which is conducive to reducing the size and steel consumption of the main columns, transverse tie rods and oblique support rods. The size and steel consumption of the side columns are also optimized, thereby reducing the weight and steel consumption of the entire top sound insulation screen, achieving the purpose of reducing construction costs.

[0047] Of course, based on the technical principles of this example, Fig.14 As shown, the main beam 2 can also be arranged above the connection point between the transverse tie rod 25 and the main column 1 and below the connection point between the oblique support rod 26 and the main column 1. In this structure, the oblique support rod 26 has a better supporting effect and a more stable structure.

[0048] The embodiments of the present invention are only for better illustrating the technical solutions of the present invention and should not be regarded as limitations of the present invention. The technical features in many embodiments may also be used interchangeably. Based on the technical principles of the present invention, those skilled in the art may re-combine the technical solutions described in the above embodiments or simply replace some of the components therein with similar technologies. As long as they are based on the technical principles of the present invention, they are all within the protection scope required by the present invention.

Claims

1. A cable-supported sound barrier, comprising side sound insulation screens arranged on both sides of a road or bridge, characterized in that: It also includes a top sound insulation screen arranged above the road bridge, the top sound insulation screen includes a load-bearing cable net, a main frame, a side frame and a sound insulation board, the main frame includes a main column and a main beam, the main column is arranged in the middle of the road bridge at intervals along the longitudinal direction of the road bridge, and the main beam is fixedly arranged on the upper part of the main column along the longitudinal direction of the road bridge; the side frame includes side columns and side beams, the side columns are fixedly arranged at the edge of the road bridge at intervals along the longitudinal direction of the road bridge, and the side beams are fixedly arranged on the top of the side columns along the longitudinal direction of the road bridge; the load-bearing cable net includes a plurality of main cables, the main cables extend roughly in the transverse direction of the road bridge and have their two ends respectively fixed on the main beam and the side beam, the main cables are arranged at intervals from each other along the longitudinal direction of the road bridge, and the sound insulation board is arranged on the load-bearing cable net.

2. The cable-supported noise barrier according to claim 1, characterized in that: The cable-supported sound insulation barrier also includes a tensioning cable, one end of which is fixedly connected to the upper part of the side column, and the other end is connected to a connecting piece fixedly arranged on the road and bridge foundation outside the side column.

3. The cable-supported noise barrier according to claim 1, characterized in that: The main frame also includes an anti-thrust main diagonal brace or an anti-thrust main diagonal cable, both ends of which are respectively connected to adjacent main columns, and the anti-thrust main diagonal brace or the anti-thrust main diagonal cable are arranged in an X shape or a zigzag shape.

4. The cable-supported noise barrier according to claim 1, characterized in that: The side frame also includes an anti-push side diagonal brace or an anti-push side diagonal cable, the two ends of which are respectively connected to adjacent side columns, and the anti-push side diagonal brace or the anti-push side diagonal cable is arranged in an X shape or a zigzag shape.

5. The cable-supported noise barrier according to claim 1, characterized in that: The load-bearing cable net also includes longitudinal auxiliary cables or longitudinal auxiliary beams, which are arranged to extend longitudinally along the road bridge. The longitudinal auxiliary cables or longitudinal auxiliary beams are arranged at intervals in the transverse direction of the road bridge and are fixedly connected to the main cables at the intersection with the main cables.

6. The cable-supported noise barrier according to claim 1 or 5, characterized in that: The load-bearing cable net also includes anti-thrust secondary diagonal braces or anti-thrust secondary diagonal cables, which are arranged in an X shape or a zigzag shape between the main beam and the side beam, and are fixedly connected to the main cables, or the main cables and longitudinal secondary cables, or the main cables and longitudinal secondary beams at their intersection points.

7. The cable-supported noise barrier according to claim 5, characterized in that: A damping device is arranged between the main column and the longitudinal auxiliary cable or / and between the side column and the longitudinal auxiliary beam, or between the main column and the longitudinal auxiliary beam or / and between the side column and the longitudinal auxiliary beam, and the damping device includes a viscous damper, an eddy current damper or a small hole throttling damper.

8. The cable-supported noise barrier according to claim 1, characterized in that: A plurality of sound insulation boards are provided, and the sound insulation boards are arranged in an array along the longitudinal direction and the transverse direction of the road bridge. Both ends of each sound insulation board along the longitudinal direction of the road bridge are respectively fixed on the main cable.

9. The cable-supported noise barrier according to claim 1, characterized in that: The cable-supported sound insulation barrier also includes a middle sound insulation screen, which includes a middle sound insulation board and a middle supporting frame. The middle sound insulation board is arranged in the middle supporting frame, and the two side facades of the middle sound insulation board corresponding to the roads on both sides are provided with sound absorbing structures.

10. The cable-supported noise barrier according to claim 9, characterized in that: The intermediate support frame is independently fixed on the road bridge, or the intermediate support frame is integrated with the main frame.

11. The cable-supported noise barrier according to claim 1, characterized in that: The side sound insulation screen is composed of a side sound insulation board and a side supporting frame. The side supporting frame is independently fixed on the road bridge or the side supporting frame is integrated with the side frame. The side sound insulation board is arranged in the side supporting frame. The inner side facade of the side sound insulation board corresponding to the internal road is provided with a sound absorbing structure.

12. The cable-supported noise barrier according to claim 1, characterized in that: A damping device is arranged between the main cable and the main column or / and between the main cable and the side column. The damping device includes a viscous damper, an eddy current damper or a small hole throttling damper.

13. The cable-supported noise barrier according to claim 1, characterized in that: The cable-supported sound insulation barrier also includes a ventilation and pressure relief channel.

14. The cable-supported noise barrier according to claim 13, characterized in that: The ventilation and pressure relief channel is arranged between the side sound insulation screen and the top sound insulation screen. The top sound insulation screen is provided with a sound shielding extension section. The sound shielding extension section covers the top of the side sound insulation screen in both vertical and horizontal projections.

15. The cable-supported noise barrier according to claim 13, characterized in that: The ventilation and pressure relief channel is arranged between the sound insulation board and the main beam of the top sound insulation screen.

16. The cable-supported noise barrier according to claim 15, characterized in that: A sound-blocking screen is provided below the ventilation and pressure relief channel, and the projection of the sound-blocking screen on the surface of the road and bridge is partially overlapped with the projection of the top sound-blocking screen on the surface of the road and bridge.

17. The cable-supported noise barrier according to claim 1, characterized in that: A connecting beam is arranged between the side columns arranged on both sides of the road bridge, the main frame is fixedly arranged on the connecting beam, the main column is fixedly arranged at the middle part of the connecting beam corresponding to the middle part of the road bridge, and the main beam is fixedly arranged on the top of the main column.

18. The cable-supported noise barrier according to claim 1, characterized in that: The top sound insulation screen also includes a suspended frame, which is composed of a transverse tie rod and an oblique support rod. The transverse tie rod and the oblique support rod are symmetrically arranged on both sides of the main column. The two ends of the transverse tie rod are respectively connected to the lower part of the main column and the top of the side column, and the two ends of the oblique support rod are respectively connected to the upper part of the main column and the top of the side column. The main beam is fixed on the main column and is arranged above the connection point between the transverse tie rod and the main column.

19. The cable-supported noise barrier according to claim 1, characterized in that: The exposed surface of the sound insulation board is provided with a photovoltaic power generation panel, or an integrated photovoltaic power generation film, or a photovoltaic power generation coating.

20. The cable-supported noise barrier according to claim 1, characterized in that: At least part of the sound insulation panels in the top sound insulation screen are provided with a sound absorbing structure on the inner surface corresponding to the inner road.

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