Bridge and sound barrier integrated structure for driving in beam

Abstract

The invention relates to the technical field of bridges, in particular to a bridge and sound barrier integrated structure for driving in a beam. A bridge and sound barrier integrated structure for driving in a beam comprises a box beam, the box beam is of a concrete structure, the interior of a box beam cavity of the box beam is used for driving of a train, a box beam bottom plate is provided with a bottom plate cross beam, the bottom plate cross beam protrudes out of a box beam web plate, and the bottom plate cross beam is used for anchoring a stay cable or a sling; the track is arranged on a bottom plate of the box girder, and the track extends in the length direction of the box girder. Compared with the prior art that the train runs on the bridge floor and a sound barrier needs to be arranged on the bridge floor, the train of the structure can directly run in the box girder cavity, the step of arranging the sound barrier on the bridge floor is omitted, and the construction efficiency is improved. And as no sound barrier is arranged, the situation that the sound barrier is damaged is avoided as far as possible, and therefore potential safety hazards caused by damage of sound barrier components in the long-term operation process are avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of bridges, and particularly to an integrated structure of a bridge with a vehicle running inside the beam and a sound barrier. Background Art

[0002] In recent years, with the rapid development of China's railways, a series of environmental problems have also emerged. Among them, noise pollution is considered to be the most important pollution factor caused by high-speed railways to the environment and society. With the increase in the density of China's railway network, the situation of passing through environmentally sensitive areas such as densely populated residential areas, schools, government agencies, enterprises and institutions is increasing day by day. Usually, a sound barrier is set up to isolate the noise propagation.

[0003] At present, the sound barriers used on bridges are mainly upright sound barriers and enclosed sound barriers. The upright sound barrier has a simple structure and is convenient for maintenance, and is widely used. However, the upright sound barrier has an "openness", and there are still a large number of direct sounds and noise diffraction phenomena. At present, for sections with higher noise reduction requirements, such as environmental protection areas, schools, densely populated residential areas, etc., enclosed sound barriers are usually used.

[0004] At present, the sound barrier on the bridge is set by installing a sound barrier facility foundation on the bridge deck, setting a sound barrier steel skeleton or steel support on the foundation, and installing a sound barrier plate on the skeleton. At present, the sound barrier facilities adopted on bridges, especially the enclosed sound barriers, largely adopt steel structures and bolt connections. Therefore, during the project acceptance and long-term operation process, the operation and maintenance workload is large, and there are problems such as bolt loosening and sound absorption plate falling off, which pose certain maintenance and safety problems to the line operation and the surrounding environment. Especially in areas where the bridge is relatively high or the wind speed is relatively large, under the alternating action of natural wind and train pulsating wind, the fatigue problem of the currently adopted sound barrier facilities is relatively prominent, and the potential safety hazards are difficult to completely eliminate. At the same time, the maintenance workload during the whole life cycle is large and the cost is high. In addition, the applicant has simultaneously applied for "A Design Method for High-Speed Railway Bridges with Vehicles Running Inside the Beam" for designing this structure. Summary of the Invention

[0005] The purpose of the present invention is to overcome the deficiencies in the prior art that when the sound barrier is set on the bridge deck, there is a risk of bolt loosening and sound absorption plate falling off of the sound barrier, which will affect the line operation and the surrounding environment, and to provide an integrated structure of a bridge with a vehicle running inside the beam and a sound barrier.

[0006] In order to achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0007] In the first aspect, the present invention provides an integrated structure of a bridge with a vehicle running inside the beam and a sound barrier, comprising:

[0008] Box girder, the box girder is a concrete structure, the interior of the box girder chamber of the box girder is used for train running, a bottom beam is arranged on the box girder bottom plate, the bottom beam protrudes from the box girder web, and the bottom beam is used for anchoring stay cables or suspension cables;

[0009] Track, the track is arranged on the box girder bottom plate, and the track extends along the length direction of the box girder.

[0010] When this box girder is used in a cable-stayed bridge, the extended area where the bottom beam protrudes from the box girder web is used for anchoring stay cables; when this box girder is used in a suspension bridge, the extended area where the bottom beam protrudes from the box girder web is used for anchoring suspension cables.

[0011] The box girder is a concrete structure, and the concrete structure has certain sound insulation performance. Moreover, since the train runs directly inside the box girder, the box girder body can act as a sound insulation component. Compared with the prior art where the train runs on the bridge deck and a sound barrier needs to be set on the bridge deck, the train of this structure can run directly inside the box girder chamber, reducing the step of setting a sound barrier on the bridge deck, which is beneficial to improving the construction efficiency. And because there is no sound barrier, the situation of sound barrier breakage is avoided as much as possible, thereby avoiding the potential safety hazards brought by the diseases of the sound barrier components during long-term operation. A bottom beam is arranged on the bottom surface of the box girder bottom plate, and the areas where both ends of the bottom beam protrude from the box girder web are used for anchoring stay cables or suspension cables. Compared with the existing cable-stayed bridge where the stay cables are fixed to the top plate of the box girder, the stay cables of this box girder are anchored to the bottom beam, so that the stay cables can support the box girder bottom plate, which is beneficial to improving the stability of the box girder.

[0012] Preferably, a haunch is arranged inside the box girder of the bottom beam, and the haunch is arranged at the bottom corner of the box girder.

[0013] The bottom corners of the box girder chamber are the two bottom corners below the box girder chamber. Since the train acts directly on the bottom plate, a large negative moment is generated at the end of the bottom plate. Because the bottom plate and the web are integrally cast, the negative moment at the end of the bottom plate is transmitted to the web, and a region with relatively large stress will be formed at a certain height inside the web. Therefore, a haunch is set to improve the local stress at the junction of the bottom plate and the web. Then, through the data of force analysis, the height range with relatively large stress inside the box girder is determined, and the height of the haunch is adapted to the height range with relatively large stress inside the box girder.

[0014] Preferably, convex members and concave members with different depths and different widths are arranged on the inner surface of the box girder.

[0015] Convex members and concave members with different widths and different depths are arranged on the inner surface of the box girder, which can effectively absorb sound and is beneficial to improving the sound insulation performance of the box girder.

[0016] Preferably, pressure relief holes are arranged on the box girder web.

[0017] The shape of the pressure relief hole is determined according to the actual situation, and it can be a round hole or a round-ended hole.

[0018] Preferably, the pressure relief holes provided in the web of the box girder are distributed in a row along the length direction of the track, the distance between two adjacent pressure relief holes is 6 - 8 m, and the diameter of the pressure relief hole is 60 - 80 cm; pressure relief holes are also provided in the top plate of the box girder.

[0019] In areas where the sound insulation requirements are not strict, such as commercial areas, parks, green spaces or industrial areas, etc., circular holes with a diameter of 60 - 80 cm are provided, and pressure relief holes are provided in both the web and the top plate of the box girder, which is beneficial to ensuring the pressure relief effect.

[0020] Preferably, the pressure relief holes are distributed in two rows along the length direction of the track, the distance between two adjacent pressure relief holes in the same row is 1 - 2 m, the diameter of the pressure relief hole is 8 - 12 cm, and the axis of the pressure relief hole is arranged in a curve.

[0021] In areas where the sound insulation requirements are strict, such as residential areas, hospitals, schools or office areas, etc., only circular pressure relief holes with a diameter of 8 - 12 cm are provided in the web, which can reduce the noise emission as much as possible while relieving pressure. The axis of the pressure relief hole is arranged in a curve, which increases the sound reflection, is beneficial to improving the sound insulation effect, and does not affect the ventilation and pressure relief effects at the same time.

[0022] Preferably, a maintenance passage is provided inside the box girder chamber, the maintenance passage is arranged on both sides of the box girder chamber along the length direction of the track, a cable trough is provided inside the maintenance passage, and anchor fittings are provided below the cable trough, and the anchor fittings are used for anchoring the bottom plate prestressed tendons.

[0023] The maintenance passage in this application is similar to the maintenance passage in a tunnel. A cable trough and anchor fittings are provided inside the maintenance passage, and the cable trough is above the anchor fittings, which is convenient for checking the cable condition. Because there is a track in the middle of the box girder chamber, it is anchored inside the maintenance passages on both sides.

[0024] Preferably, heat insulation members are provided outside both the top plate and the web of the box girder.

[0025] Because the track in this application is an enclosed component, heat insulation members are provided outside the top plate and the side plate of the box girder to avoid as much as possible the too large temperature difference between the inside and outside environments of the box girder, which affects the quality of the box girder.

[0026] In a second aspect, the present invention provides a cable-stayed bridge, which includes an integrated structure of a bridge with vehicles running inside the beam and a sound barrier as described above, the bottom plate cross beams are distributed at intervals along the length direction of the cable-stayed bridge, the stay cables of the cable-stayed bridge are connected to the anchorage areas protruding from the webs of the box girder at both ends of the bottom plate cross beam, and the net height and net width of the box girder chamber remain constant along the length direction of the cable-stayed bridge.

[0027] In existing cable-stayed bridges, the cable stays are mostly connected to the top surface of the box girder. In this cable-stayed bridge, since the train needs to run inside the box girder, the bottom plate of the box girder is subject to the dynamic load of the train. The cable stays are anchored to the bottom plate cross beam, which is beneficial to improving the structural stability. The bottom plate cross beams are arranged at intervals along the length direction of the cable-stayed bridge, making the outer wall of the bottom plate uneven, which can absorb noise and is beneficial to improving the sound absorption performance of the box girder. Since this application is to design a bridge with a train running inside the box girder, the box girder is a constant cross-section box girder to avoid the change of the net height and net width of the box girder chamber affecting the running of the train.

[0028] Preferably, it further includes transition segments. The transition segments are arranged at both ends of the box girder. The transition segments extend along the length direction of the track. The transition segments include two side plates. The two side plates are respectively connected to the box girder webs. The top surface heights of the two side plates increase from the side far away from the box girder to the side close to the box girder.

[0029] The transition segments are arranged at both ends of the closed box girder, with an open-air design, and the top surface is higher and higher as it gets closer to the box girder, which can minimize the situation of sonic booms generated when the train or motor vehicle enters the box girder, and is beneficial to improving the sound insulation effect and improving the aerodynamic effect.

[0030] Preferably, the end of the side plate far away from the box girder is provided with a rounded corner.

[0031] The end of the transition segment far away from the box girder is provided with a rounded corner, which can minimize the micro-pressure wave and reduce the discomfort of the passengers' ears when the train enters the box girder as much as possible.

[0032] Preferably, an outer partition is provided at the 0# segment where the box girder is connected to the cable tower. The outer partition is used to thicken the top plate, web and bottom plate of the box girder at the 0# segment.

[0033] In the box girder bridges of the prior art, for the beam segments in contact with the bridge piers, the net height and net width of the box girder chamber are reduced, so that the corresponding beam segments have sufficient strength to resist the shear force brought by the bridge piers. However, the chamber of this box girder is used for the train to run, so the net height and net width of the box girder chamber cannot be changed, thus avoiding affecting the running of the train. An outer partition is arranged at the fulcrum section. The outer partition is connected to the outer walls of the top plate, web and bottom plate of the box girder, without reducing the net height and net width of the box girder chamber of the corresponding beam segment, so that the anti-deformation ability of the beam segment is improved.

[0034] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present invention are:

[0035] 1. An integrated structure of a bridge with in-beam train operation and a sound barrier, comprising a box girder and a track. The interior of the box girder chamber of the track can accommodate a train. The track is arranged inside the box girder chamber and is set along the length direction of the box girder chamber, so that the train can run inside the box girder. The box girder is a concrete structure, and the concrete structure has certain sound insulation performance. And since the train runs directly inside the box girder, the box girder body can act as a sound insulation component. Compared with the existing technology where the train runs on the bridge deck and a sound barrier needs to be set on the bridge deck, the train of this structure can run directly inside the box girder chamber, reducing the steps of setting the sound barrier on the bridge deck, which is beneficial to improving the construction efficiency. And because there is no sound barrier, the situation of sound barrier breakage is avoided as much as possible, thus avoiding the safety hazards brought by the diseases of the sound barrier components during the long-term operation. The bottom surface of the box girder floor is provided with a floor cross beam. The areas where both ends of the floor cross beam protrude from the box girder web are used for anchoring stay cables or suspension cables. Compared with the existing cable-stayed bridge where the stay cables are fixed to the top plate of the box girder, the stay cables of this box girder are anchored to the floor cross beam, so that the stay cables can support the box girder floor, which is beneficial to improving the stability of the box girder. This device solves the deficiencies of the existing technology that when the sound barrier is set on the bridge deck, there are risks of bolt loosening and sound absorption panel falling off of the sound barrier, which will affect the line operation and the surrounding environment.

[0036] 2. A cable-stayed bridge uses the integrated structure of a bridge with in-beam train operation and a sound barrier as described above. The floor cross beams are distributed at intervals along the length direction of the cable-stayed bridge, making the outer wall of the floor uneven, which can absorb noise and is beneficial to improving the sound absorption performance of this box girder; the stay cables of the cable-stayed bridge are connected to the anchorage areas where both ends of the floor cross beam protrude from the box girder web, which is beneficial to improving the structural stability; the net height and net width of the box girder chamber remain unchanged along the length direction of the cable-stayed bridge, avoiding the influence of the change of the net height and net width of the box girder chamber on the train operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 is a schematic diagram of the integrated structure of a bridge with in-beam train operation and a sound barrier of the present invention Figure 1 ;

[0038] Figure 2 is a schematic diagram of the integrated structure of a bridge with in-beam train operation and a sound barrier in the present invention Figure 2 ;

[0039] Figure 3 is a schematic diagram of the integrated structure of a bridge with in-beam train operation and a sound barrier in the present invention Figure 3 ;

[0040] Figure 4 is a schematic diagram of the structure of a cable-stayed bridge in the present invention;

[0041] Figure 5 is a schematic diagram of the transition segment of the present invention;

[0042] Figure 6 Schematic diagram of the pressure relief hole of the present invention Figure 1 ;

[0043] Figure 7 is Figure 6 the cross-section at A-A in

[0044] Figure 8 is Figure 6 the cross-section at B-B in

[0045] Figure 9 Schematic diagram of the pressure relief hole of the present invention Figure 2 ;

[0046] Figure 10 is Figure 9 the cross-section at C-C in

[0047] Figure 11 Schematic diagram of the outer partition board of the present invention;

[0048] Icon: 1 - top plate of box girder, 2 - web of box girder, 3 - bottom plate of box girder, 4 - bottom plate cross beam, 5 - stay cable, 6 - catenary, 7 - maintenance passage, 8 - outer partition board, 9 - pressure relief hole, 10 - transition segment, 11 - longitudinal diaphragm, 12 - vertical diaphragm, 13 - track, 14 - cable tower, 15 - rib slope. Detailed implementation manners

[0049] The present invention will be further described in detail below with reference to specific embodiments. However, it should not be understood that the scope of the above-mentioned subject matter of the present invention is limited to the following embodiments. All technologies implemented based on the content of the present invention belong to the scope of the present invention.

[0050] In the description of the specific embodiments of the present invention, without special instructions, the expression terms of the orientation or position relationship such as "upper", "lower", "left", "right", "center", "inner", "outer", etc. are all based on the orientation or position relationship shown in the drawings, or the orientation or position relationship when the invention product / device / device is normally used and placed. These terms of orientation or position relationship are only for the convenience of describing the solution of the present invention or simplifying the description in the specific embodiments, so as to facilitate technicians to quickly understand the solution, rather than indicating or implying that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific position relationship. Therefore, it should not be construed as a limitation to the present invention.

[0051] In addition, when terms such as "horizontal", "vertical", "hanging", "parallel" appear, it does not mean that the corresponding device / component / element is required to be absolutely horizontal or vertical or hanging or parallel, but it can be slightly inclined or deviated. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and it does not mean that the structure must be completely horizontal, but it can be slightly inclined. Or, it can be simply understood that the corresponding device / component / element is arranged in directions such as "horizontal", "vertical", "hanging", "parallel", and can have an error / deviation of ±10% relative to the corresponding direction setting, more preferably an error / deviation within ±8%, more preferably an error / deviation within ±6%, more preferably an error / deviation within ±5%, more preferably an error / deviation within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the solution of the present invention.

[0052] In addition, when expressions such as "first", "second", "third", etc. appear in the terms, they are only used to distinguish the descriptions of the same or similar components, and should not be understood as emphasizing or implying the relative importance of specific components.

[0053] In addition, in the description of the embodiments of the present invention, "several", "multiple", "a number of" represent at least 2. It can be any situation such as 2, 3, 4, 5, 6, 7, 8, 9, etc., and even can be a situation of more than 9.

[0054] In addition, in the description of the technical solution of the present invention, unless otherwise clearly specified / defined / restricted, when terms such as "set", "installed", "connected", "connected", "provided with", "laid", "arranged" appear, they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. It can be connection means commonly used in the art such as welding, riveting, bolting, threaded connection, etc. Such a connection can be a mechanical connection, an electrical connection or a communication connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two components.

[0055] Embodiment 1

[0056] As Figure 1 shown, a bridge and sound barrier integrated structure for a train running inside a beam adopted in this embodiment includes:

[0057] A box girder, the box girder is a concrete structure, the interior of the box girder cavity of the box girder is used for train running, a bottom plate cross beam 4 is arranged on the bottom surface of the box girder bottom plate 3, the bottom plate cross beam 4 protrudes from the box girder web 2, and the bottom plate cross beam 4 is used for anchoring a stay cable 5 or a suspension cable;

[0058] A track 13, the track 13 is arranged on the box girder bottom plate 3, and the track 13 extends along the length direction of the box girder.

[0059] Figure 1 The middle dotted line is the gauge of the train. In this embodiment, the box girder is provided with only one chamber, and two tracks 13 are arranged inside one chamber. However, in the actual use process, the number of chambers of the box girder and the number of tracks 13 inside the chamber are determined according to the actual situation.

[0060] The box girder is of concrete structure, and the concrete structure has certain sound insulation performance. Moreover, since the train runs directly inside the box girder, the box girder body can act as a sound insulation component. Compared with the existing technology where the train runs on the bridge deck and a sound barrier needs to be set on the bridge deck, the train of this structure can run directly inside the box girder chamber, reducing the steps of setting a sound barrier on the bridge deck, which is beneficial to improving the construction efficiency. And because there is no sound barrier, the situation of sound barrier breakage is avoided as much as possible, thus avoiding the potential safety hazards brought by the diseases of the sound barrier components during the long-term operation. The bottom surface of the box girder bottom plate 3 is provided with a bottom plate cross beam 4. The areas where the two ends of the bottom plate cross beam 4 protrude from the box girder web 2 are used for anchoring the stay cables 5 or the suspension cables. Compared with the existing cable-stayed bridge where the stay cables 5 are fixed to the top plate of the box girder, the stay cables 5 of this box girder are anchored to the bottom plate cross beam 4, so that the stay cables 5 can support the box girder bottom plate 3, which is beneficial to improving the stability of the box girder.

[0061] Furthermore, the width of the upper flange of the box girder is reduced compared with that of the traditional box girder upper flange, as Figures 1 - 3 shown. The traditional tracks 13 are mostly arranged on the top surface of the box girder, and the existing upper flange of the box girder will act as the bridge deck, so the width of the existing upper flange of the box girder is much larger than that of the lower flange to enhance the anti-deformation ability of the box girder to meet the stress characteristics of the box girder top plate 1. However, in this application, since the tracks 13 are arranged inside the box girder chamber, the gravity of the tracks 13 and the train is mainly borne by the box girder bottom plate 3, so the width of the upper flange of the box girder is shortened, which can save the materials for manufacturing the box girder.

[0062] Furthermore, the height of the box girder chamber is greater than or equal to 65% of the width of the box girder chamber, which is adapted to the situation where the train runs inside the box girder chamber. In this embodiment, the net width of the box girder chamber is 1239 mm, and the net height is 962 mm. For the traditional box girder, the train mostly runs on the top surface of the top plate, and the live load of the train is directly transmitted to the top surface of the upper flange of the box girder. The height-width ratio of the chamber of this structure is greater than or equal to 65%, which is adapted to the situation where the tracks 13 are arranged inside the box girder chamber and the train runs inside the box girder chamber in this application. And because the net height of the train chamber is increased, the bending resistance and torsional resistance of the box girder can be improved.

[0063] The box girder web 2 is provided with a pressure relief hole 99. As Figures 6 - 8As shown, in areas where sound insulation requirements are not strict, such as commercial areas, parks, green spaces or industrial areas, the pressure relief holes 99 provided on the box girder web 2 are distributed in a row along the length direction of the track 13. A row of pressure relief holes 99 are provided on a box girder web 2, and the distance between two adjacent pressure relief holes 99 is 6-8m, and the diameter of the pressure relief holes 99 is 60-80cm. The box girder top plate 1 is also provided with pressure relief holes 99, and the position distribution of the pressure relief holes 99 on the box girder top plate 1 matches the distribution of the pressure relief holes 99 on the box girder web 2. In areas where sound insulation requirements are strict, such as residential areas, hospitals, schools or office areas, only circular pressure relief holes 99 with a diameter of 8-12cm are provided on the box girder web, and the pressure relief holes 9 provided on a box girder web are distributed in two rows along the length direction of the track, and the distance between two adjacent pressure relief holes 9 in the same row is 1-2m, and the axis of the pressure relief holes 9 is provided in a curve, as shown in FIG. Figures 9 - 10 As shown, the noise emission can be reduced as much as possible while being able to release pressure. The axis of the pressure relief hole 9 is arranged in a curve, which increases sound reflection and is conducive to improving the sound insulation effect, while not affecting the ventilation and pressure relief effects.

[0064] like Figures 1 - 3 As shown, the box beam cavity is provided with an inspection channel 7, and the inspection channel 7 is provided on both sides of the box beam cavity along the length direction of the track 13. A cable trough is provided inside the inspection channel 7, and an anchor is provided at the lower part of the cable trough ( Figures 1 - 3 The anchor is used to anchor the prestressed bundle of the bottom plate. The inspection channel 7 in the present application is similar to the inspection channel 7 in the tunnel. A cable trough and an anchor are provided inside the inspection channel 7, and the cable trough is above the anchor to facilitate the inspection of the cable. Because a track 13 is provided in the middle of the box beam chamber, it is anchored inside the inspection channel 7 on both sides.

[0065] The outside of the box girder top plate 1 and the outside of the box girder web plate 2 are both provided with thermal insulation components ( Figures 1 - 3 Because the track 13 of the present application is a closed component, a thermal insulation component is arranged outside the box girder top plate 1 and the box girder side plate to avoid too large a temperature difference between the box girder interior and the external environment bottom plate, which may affect the quality of the box girder.

[0066] like Figures 1 - 3As shown, a rib slope 15 is provided inside the box girder of the bottom plate cross beam 4, and the rib slope 15 is arranged at the bottom corners of the box girder. The bottom corners of the box girder chamber are the two bottom corners below the box girder chamber. Since the train acts directly on the bottom plate, a large negative bending moment is generated at the end of the bottom plate. Because the bottom plate and the web are integrally cast, the negative bending moment at the end of the bottom plate is transmitted to the web, and a region with relatively large stress will be formed at a certain height inside the web. Therefore, the rib slope 15 is provided to improve the local stress at the junction of the bottom plate and the web. Then, based on the data of the stress analysis, the height range with relatively large stress inside the box girder is determined, and the height of the rib slope 15 is adapted to the height range with relatively large stress inside the box girder.

[0067] The inner surface of the box girder is provided with raised members and sunken members with different widths and different depths ( Figures 1 - 11 both not shown), which can effectively absorb sound and is beneficial to improving the sound insulation performance of the box girder.

[0068] When this box girder is not used for a cable-stayed bridge or a suspension bridge, the specific structure is as Figure 2 shown; as Figure 3 shown, in actual use, a longitudinal diaphragm 11 and a vertical diaphragm 12 can be provided below the box girder chamber to increase the stiffness of the box girder, thereby increasing the stiffness of the bridge and enhancing the spanning ability of the bridge.

[0069] In this embodiment, as Figure 1 and Figure 2 shown, the catenary 6 is connected to the middle of the bottom surface of the box girder top plate 1. In actual use, the connection position of the catenary 6 can be adjusted to other areas according to needs.

[0070] Embodiment 2

[0071] As Figure 4 shown, a cable-stayed bridge includes a bridge with integrated structure of in-beam driving and a sound barrier as in Embodiment 1. The bottom plate cross beams 4 are distributed at intervals along the length direction of the cable-stayed bridge. The stay cables 5 of the cable-stayed bridge are connected to the anchorage areas protruding from the box girder webs 2 at both ends of the bottom plate cross beam 4. The net height and net width of the box girder chamber remain constant along the length direction of the cable-stayed bridge.

[0072] In existing cable-stayed bridges, the anchor cables are mostly connected to the top surface of the box girder. In this cable-stayed bridge, since the train needs to run inside the box girder, the bottom plate 3 of the box girder is subjected to the dynamic load of the train. The stay cables 5 are anchored to the bottom plate cross beam 4, which is beneficial to improving the structural stability. The bottom plate cross beams 4 are arranged at intervals along the length direction of the cable-stayed bridge, making the outer wall of the bottom plate uneven, which can absorb noise and is beneficial to improving the sound absorption performance of this box girder. Since this application is to design a bridge with the train running inside the box girder, the box girder is an equal-section box girder to avoid the influence of the change of the net height and net width of the box girder chamber on the train running.

[0073] It also includes a transition segment 10, as Figure 5As shown in the figure, the transition section 10 is arranged at both ends of the box girder. The transition section 10 includes two side plates, and the two side plates are respectively connected to the box girder webs 2. The top surface heights of the two side plates increase from the side far away from the box girder to the side close to the box girder. The transition section 10 is arranged at both ends of the closed box girder, with an open-air design, and the higher the top surface is closer to the box girder, which can minimize the situation of sonic booms generated when trains or motor vehicles enter the interior of the box girder, and is conducive to improving the sound insulation effect. The end of the side plate far away from the box girder is provided with a rounded corner. When the end of the transition section 10 far away from the box girder is provided with a rounded corner, it can minimize the micro-pressure wave and reduce the discomfort of passengers' ears when the train enters the box girder as much as possible.

[0074] As Figure 11 As shown in the figure, an outer partition 8 is provided at the 0-section of the box girder connected to the cable tower 14. The outer partition 8 is used to thicken the box girder top plate 1, the box girder web 2 and the box girder bottom plate 3 of the 0-section. For the box girder bridges in the prior art, the beam sections in contact with the piers will reduce the net height and net width of the box girder chamber, so that the corresponding beam sections have sufficient strength to resist the shear force brought by the piers. However, the chamber of this box girder is used for the form of trains, so the net height and net width of the box girder chamber cannot be changed to avoid affecting the train operation. An outer partition 8 is arranged at the fulcrum section. The outer partition 8 is connected to the outer walls of the box girder top plate 1, the box girder web 2 and the box girder bottom plate 3. Without reducing the net height and net width of the box girder chamber of the corresponding beam section, the anti-deformation ability of the beam section is improved.

[0075] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An integrated structure of a bridge and a sound barrier for vehicles traveling in the beam, characterized in that: Include: A box girder, wherein the box girder is a concrete structure, wherein the interior of the box girder cavity is used for train travel, and a bottom plate cross beam (4) is provided on the bottom surface of the box girder bottom plate (3), wherein the bottom plate cross beam (4) protrudes from the box girder web plate (2), and the bottom plate cross beam (4) is used for anchoring inclined cables (5) or slings; A track (13), wherein the track (13) is arranged on the box beam bottom plate (3), and the track (13) extends along the length direction of the box beam.

2. The integrated structure of a bridge and a sound barrier for vehicles traveling within a beam according to claim 1, characterized in that: The bottom plate cross beam is provided with a stem oblique (15) inside the box beam, and the stem oblique (15) is arranged at the bottom angle of the box beam.

3. The integrated structure of a bridge and a sound barrier for vehicles traveling within a beam according to claim 1, characterized in that: The inner surface of the box beam is provided with convex components and concave components of different depths and widths.

4. The integrated structure of a bridge and a sound barrier for vehicles traveling within a beam according to any one of claims 1 to 3, characterized in that: The box beam web (2) is provided with a pressure relief hole (9).

5. The integrated structure of a bridge and a sound barrier for vehicles traveling within a beam according to claim 4, characterized in that: The pressure relief holes (9) arranged on the box beam web (2) are distributed in a row along the length direction of the track (13), the distance between two adjacent pressure relief holes (9) is 6-8m, and the diameter of the pressure relief holes (9) is 60-80cm; the box beam top plate (1) is also provided with pressure relief holes (9).

6. The integrated structure of a bridge and a sound barrier for vehicles traveling within a beam according to claim 4, characterized in that: The pressure relief holes (9) are distributed in two rows along the length direction of the track (13); the distance between two adjacent pressure relief holes (9) in the same row is 1-2 m; the diameter of the pressure relief holes (9) is 8-12 cm; and the axis of the pressure relief holes (9) is arranged in a curve.

7. A cable-stayed bridge, characterized in that: An integrated structure of a bridge and sound barrier for vehicles traveling within a beam as described in any one of claims 1 to 6, wherein bottom plate cross beams (4) are spaced apart along the length direction of the cable-stayed bridge, and the cable-stayed cables (5) of the cable-stayed bridge are connected to the anchoring areas protruding from the box beam web (2) at both ends of the bottom plate cross beam (4), and the clear height and clear width of the box beam cavity are kept constant along the length direction of the cable-stayed bridge.

8. The cable-stayed bridge according to claim 7, characterized in that: The invention also comprises a transition section (10), wherein the transition section (10) is arranged at both ends of the box beam, the transition section (10) extends along the length direction of the track (13), and the transition section (10) comprises two side plates, wherein the two side plates are respectively connected to the web plate (2) of the box beam, and the top surface height of the two side plates increases from the side away from the box beam to the side close to the box beam.

9. The cable-stayed bridge according to claim 8, characterized in that: The side plate is provided with a rounded corner at one end away from the box beam.

10. A cable-stayed bridge according to any one of claims 7 to 9, characterized in that: The section No. 0 of the box girder connected to the cable tower (14) is provided with an outer partition plate (8), and the outer partition plate (8) is used to thicken the box girder top plate (1), the box girder web plate (2) and the box girder bottom plate (3) of the section No. 0.

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