A bridge structure with a fully enclosed sound barrier

Abstract

This utility model relates to the field of bridge engineering, specifically to a bridge structure with a fully enclosed sound barrier. The structure includes a bridge beam and a sound barrier. The bridge beam comprises a top plate component, a bottom plate component, a web component, and inclined components. The top plate component and the bottom plate component are connected via the web component. The two sides of the top plate component are connected to the two sides of the bottom plate component via the inclined components. The sound barrier is located above the top plate component and includes sound-absorbing panels and arch frames. The two ends of the arch frames are connected to the two sides of the top plate component, and the sound-absorbing panels are installed between adjacent arch frames. By adding the inclined components to the bridge beam, the load on both sides of the top plate component is directly transferred to the bottom plate component, effectively solving the problem that traditional box girder structures with flanges are difficult to adapt to the load caused by the installation of a fully enclosed sound barrier.

Description

Technical Field

[0001] This utility model relates to the field of bridge engineering, and in particular to a bridge structure with a fully enclosed sound barrier. Background Technology

[0002] In the actual construction of high-speed railway projects, when the planned high-speed railway line needs to pass through residential areas, the high-speed trains will generate significant noise during operation. This noise pollution will seriously disrupt the daily lives of residents, affecting their normal routines, rest, and physical and mental health. Therefore, installing fully enclosed sound barriers on high-speed railway sections that pass through residential areas has become a necessary measure.

[0003] Currently, viaducts are commonly used in high-speed rail lines. Traditional viaducts typically feature a box-shaped beam structure with flanges on both sides of the top. However, when installing fully enclosed sound barriers on such viaducts, the traditional box-shaped beam structure with flanges cannot adequately handle the weight of the barriers themselves, as well as the wind loads and vibrations from trains during operation. Therefore, targeted optimization and improvement of the traditional viaduct structure are necessary. Utility Model Content

[0004] The purpose of this invention is to overcome the limitations of existing technologies, where traditional box girder structures with flanges cannot adequately withstand the loads of fully enclosed sound barriers when they are installed on elevated high-speed railway lines. Therefore, this application provides a bridge structure with a fully enclosed sound barrier.

[0005] This utility model provides a bridge structure with a fully enclosed sound barrier, comprising:

[0006] A bridge beam, comprising a top plate component, a bottom plate component, a web component, and diagonal components, wherein the top plate component and the bottom plate component are connected by the web component, and both sides of the top plate component are respectively connected to both sides of the bottom plate component by the diagonal components;

[0007] A sound barrier is located above the top plate component. The sound barrier includes sound-absorbing panels and arches. The two ends of the arches are connected to the two sides of the top plate component, and the sound-absorbing panels are installed between two adjacent arches.

[0008] This utility model provides a bridge structure with a fully enclosed sound barrier. The top plate component constitutes the bridge deck structure for laying high-speed rail tracks and installing other bridge deck facilities. Simultaneously, the two sides of the top plate component serve as mounting supports for the arch frame of the sound barrier. The web plate component connects the top plate component and the bottom plate component, forming a stable integrated structure. The inclined components effectively transfer the loads from both sides of the top plate component to the bottom plate component, thereby enhancing the top plate component's ability to withstand the load of the sound barrier. Compared to traditional box girder structures with flanges, the bridge girder of this application avoids the presence of flanges, strengthening the stress characteristics of the top plate component. The main function of the sound-absorbing panel is to reduce the noise generated when the high-speed rail passes by; the arch frame serves as the supporting skeleton for the sound-absorbing panel, fixing it in place.

[0009] This utility model, by adding the inclined component to the bridge beam, realizes the direct transfer of loads from both sides of the top plate component to the bottom plate component, effectively solving the problem that traditional box girder structures with flanges are difficult to adapt to the load caused by the installation of fully enclosed sound barriers.

[0010] Preferably, the arch frame has arch feet at both ends, and the arch feet at both ends of each arch frame are respectively connected to the top surfaces on both sides of the top plate component.

[0011] Preferably, the top surfaces of both sides of the top plate component are provided with bases, and the two arch feet are respectively connected to the top surfaces of both sides of the top plate component through the bases. The bases are used to enhance the stability of the connection between the arch feet and the top plate component.

[0012] Preferably, a first bolt and a second bolt are pre-embedded in the base, and a first steel plate is provided at the bottom of the arch foot. The first bolt and the second bolt are both U-bolts, and the first bolt and the second bolt are arranged longitudinally and transversely. A first through hole is provided on the first steel plate, and the number, size and position of the first through hole are adapted to the number, size and position of the bolt heads of the first bolt and the second bolt protruding outside the base.

[0013] In this design, both the first and second bolts are U-bolts, arranged longitudinally and transversely. This U-bolt arrangement enhances the anchoring effect of the first and second bolts within the base, resulting in a more stable anchorage. The bolt heads of the first and second bolts protruding from the base pass through the first through hole in the first steel plate. Then, by using nuts, a reliable connection between the arch foot and the base can be achieved.

[0014] Preferably, the top of the base has a first groove, the first steel plate is installed in the first groove, and a gap is provided between the first steel plate and the bottom of the first groove, the gap being filled with mortar. In this design, the gap between the first steel plate and the bottom of the first groove can absorb dimensional deviations between the base and the first steel plate caused by processing precision or thermal expansion and contraction, ensuring that the components can still achieve effective contact under non-ideal conditions and avoiding stress concentration caused by forced assembly. After the mortar is filled, it cures to form a rigid bonding layer. Its fluid filling characteristics can fully wrap the bottom surface of the first steel plate and the rough surface of the bottom of the first groove. Through the dual action of mechanical interlocking and chemical bonding, a continuous force transmission path is established between the first steel plate and the base.

[0015] Preferably, a second groove is provided at the bottom of the first groove, and a shear key is provided at the bottom of the first steel plate. The shear key is located in the second groove, which is filled with mortar. In this design, the second groove is used to accommodate the shear key, and the mortar filling the second groove is used to establish a continuous horizontal force transmission path between the shear key and the base after solidification. Furthermore, the shear key enhances the shear resistance between the arch foot and the base.

[0016] The mortar can be ordinary cement mortar or gravity-flow mortar.

[0017] Preferably, a second steel plate is provided at the bottom of the first groove. The second steel plate has a reserved hole and a second through hole. The shape and size of the reserved hole are consistent with the shape and size of the second groove. The reserved hole is aligned with the second groove during installation. The number, size, and position of the second through hole are adapted to the number, size, and position of the bolt heads of the first bolt and the second bolt protruding outside the base. In this scheme, the reserved hole is for the shear key to pass through. The bolt heads of the first bolt and the second bolt protruding outside the base are used to pass through the second through hole in the second steel plate. The second steel plate is used for simultaneous installation when the first bolt and the second bolt are pre-embedded to ensure that the relative position between the bolt heads of the first bolt and the second bolt protruding outside the base meets the predetermined requirements. In this way, when the arch foot is subsequently installed, the bolt head can smoothly pass through the first through hole in the first steel plate.

[0018] Preferably, the mortar filling the gaps and the second groove is gravity-flow mortar. Using the gravity-flow mortar can improve the efficiency and density of the gap filling.

[0019] Gravity-flowing mortar is a special mortar material designed specifically for filling gaps. Its core characteristics lie in its excellent self-leveling and flowability. Under the influence of gravity, this mortar can automatically fill complex shapes or narrow gaps without the need for additional vibration or compaction, significantly improving construction efficiency. Its formulation typically includes highly fluid cementitious materials, fine aggregates, and high-efficiency water-reducing agents, ensuring good workability with low water consumption while also considering the strength and durability after hardening.

[0020] Preferably, the arch frame is made of I-beams, and a baffle is provided on the web of the arch frame. One end of the sound-absorbing plate is located between the flange of the arch frame and the baffle. In this design, the sound-absorbing plate is fixedly connected to the arch frame by being clamped between the flange of the arch frame and the baffle.

[0021] Preferably, rubber pads are provided between the sound-absorbing panel and the flange of the arch frame, and between the sound-absorbing panel and the baffle. In this design, the rubber pads serve to dampen vibrations and adjust installation gaps. The rubber pads have good elasticity; when the sound-absorbing panel is subjected to external impacts or vibrations, the rubber pads can absorb and disperse this energy, thereby reducing the direct impact on the sound-absorbing panel and the flange of the arch frame or the baffle, thus providing damping. During the installation of the sound-absorbing panel, due to manufacturing errors or installation limitations, there may be a certain gap between the sound-absorbing panel and the arch frame or the baffle. The flexibility of the rubber pads allows them to adapt to these gaps, ensuring that the sound-absorbing panel can fit tightly in the predetermined position while maintaining a certain degree of elasticity, facilitating installation and adjustment.

[0022] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0023] This utility model provides a bridge structure with a fully enclosed sound barrier. By adding the inclined component to the bridge beam, the load on both sides of the top plate component is directly transferred to the bottom plate component, which effectively solves the problem that traditional box girder structures with flanges are difficult to adapt to the load caused by the installation of a fully enclosed sound barrier. Attached Figure Description

[0024] Figure 1 This is a schematic cross-sectional view of a bridge structure with a fully enclosed sound barrier.

[0025] Figure 2 This is an enlarged view of the arch foot area of ​​a bridge structure with a fully enclosed sound barrier.

[0026] Figure 3 for Figure 2 A cross-sectional view along section line AA.

[0027] Figure 4 This is a plan view of the first steel plate.

[0028] Figure 5 This is a plan view of the second steel plate.

[0029] Figure 6 for Figure 1 Cross-sectional view of the BB section line.

[0030] Marked in the image:

[0031] 1-Bridge beam,

[0032] 101-Top slab member, 102-Bottom slab member, 103-Web member, 104-Diagonal member,

[0033] 105-Base,

[0034] 1051 - First bolt, 1052 - Second bolt, 1053 - First groove, 1054 - Second groove

[0035] 1055 - Second steel plate,

[0036] 10551 - Reserved hole, 10552 - Second through hole

[0037] 2-Sound barrier,

[0038] 201-Sound Absorbing Board

[0039] 2011 - Rubber pad,

[0040] 202-Arch frame,

[0041] 2021-Baffle

[0042] 203-arch foot,

[0043] 2031 - First Steel Plate

[0044] 20311 - First through hole, 20312 - Vent hole

[0045] 2032-Shear Key

[0046] 3-High-speed rail track. Detailed Implementation

[0047] The present invention will be further described in detail below with reference to specific embodiments. However, it should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0048] Unless otherwise specified, the terms "upper," "lower," "left," "right," "center," "inner," and "outer" used in the description of specific embodiments of this utility model to indicate orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product / equipment / device is usually placed during use. These terms are merely for the purpose of facilitating the description of the utility model solution or simplifying the description in specific embodiments, and for enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on this utility model.

[0049] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," "parallel," and "coaxial" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, parallel, or coaxial. Slight tilt or deviation is permissible, as long as it does not affect the normal function of the relevant component. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," not that the structure must be perfectly horizontal; a slight tilt is acceptable. "Coaxial" means that two components are arranged as coaxially as possible, allowing them to move coaxially or approximately coaxially when their relative positions change. Alternatively, it can be simplified to mean that the corresponding device / component / element, when arranged in "horizontal," "vertical," "suspended," "parallel," or "coaxial" directions, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. For example, the deviation in the "coaxial" direction is controlled within 0.2-1mm, preferably within 0.2-0.5mm. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.

[0050] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0051] Furthermore, in the description of the embodiments of this utility model, "several", "multiple", and "several" represent at least two. The number can be any number, such as two, three, four, five, six, seven, eight, or nine, and can even exceed nine.

[0052] Furthermore, in the description of the technical solution of this utility model, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "provided with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0053] Example 1

[0054] like Figures 1 to 6 As shown, a bridge structure with a fully enclosed sound barrier includes a bridge beam 1 and a sound barrier 2.

[0055] The bridge girder 1 includes a top slab member 101, a bottom slab member 102, a web member 103, and diagonal members 104. The top slab member 101 and the bottom slab member 102 are connected by the web member 103, and the two sides of the top slab member 101 are connected to the two sides of the bottom slab member 102 by diagonal members 104. Specifically, the top slab member 101, the bottom slab member 102, the web member 103, and the diagonal members 104 are all made of concrete and are formed in one piece by integral casting. The top surface of the top slab member 101 is used to install the high-speed rail track 3.

[0056] The sound barrier 2 is located above the top plate component 101. The sound barrier 2 includes sound-absorbing panels 201 and arch frames 202. The two ends of the arch frames 202 are connected to the two sides of the top plate component 101, and the sound-absorbing panels 201 are installed between two adjacent arch frames 202. Specifically, the arch frames 202 are made of steel structure.

[0057] The length direction of the top plate member 101 and the bottom plate member 102 is consistent with the length direction of the bridge beam 1, and the width direction of the top plate member 101 and the bottom plate member 102 is also consistent with the width direction of the bridge beam 1. The two sides of the top plate member 101 refer to the two sides located in the width direction of the top plate member 101, and the two sides of the bottom plate member 102 refer to the two sides located in the width direction of the bottom plate member 102.

[0058] In an optional embodiment, arch feet 203 may be provided at both ends of the arch frame 202, and the arch feet 203 at both ends of each arch frame 202 are respectively connected to the top surfaces on both sides of the top plate member 101. Specifically, the arch feet 203 are made of steel structure.

[0059] In an optional embodiment, bases 105 may be provided on the top surfaces of both sides of the top plate component 101, and the two arch feet 203 are respectively connected to the top surfaces of both sides of the top plate component 101 through the bases 105. Specifically, the bases 105 are made of concrete and are integrally cast with the top plate component 101 in one piece.

[0060] In an optional embodiment, a first bolt 1051 and a second bolt 1052 may be pre-embedded in the base 105, and a first steel plate 2031 may be provided at the bottom of the arch foot 203. Both the first bolt 1051 and the second bolt 1052 are U-bolts, and the first bolt 1051 and the second bolt 1052 are arranged longitudinally and transversely. The first steel plate 2031 is provided with a first through hole 20311, and the number, size and position of the first through hole 20311 are adapted to the number, size and position of the bolt heads of the first bolt 1051 and the second bolt 1052 protruding outside the base 105.

[0061] Specifically, each base 105 may contain two first bolts 1051, with the plane of the first bolt 1051 parallel to the cross-sectional plane of the bridge beam 1. Each base 105 may contain four second bolts 1052, with the plane of the second bolt 1052 parallel to the length direction of the bridge beam 1. The bottom embedment depth of the first bolt 1051 is greater than that of the second bolt 1052. The diameters of the first bolt 1051 and the second bolt 1052 are 20mm-36mm, specifically 20mm, 26mm, 28mm, 30mm, 32mm, and 36mm.

[0062] In an optional embodiment, the top of the base 105 may be provided with a first groove 1053, and a first steel plate 2031 is installed in the first groove 1053. A gap is provided between the first steel plate 2031 and the bottom of the first groove 1053, and the gap is filled with mortar. Specifically, the depth of the first groove 1053 is 80mm, the thickness of the first steel plate 2031 is 30mm, and the width of the gap is 50mm. The first steel plate 2031 may also be provided with vent holes 20312, so that when filling the mortar, the air in the gap can be discharged to the outside through the vent holes 20312, thereby making the mortar filling operation more convenient and smooth.

[0063] In an optional embodiment, a second groove 1054 may be provided at the bottom of the first groove 1053, and a shear key 2032 is provided at the bottom of the first steel plate 2031. The shear key 2032 is located in the second groove 1054, which is filled with mortar. Specifically, the second groove 1054 is located at the middle of the bottom of the first groove 1053, and the depth of the second groove 1054 is 150mm. The shear key 2032 protrudes 150mm from the bottom of the first steel plate 2031. The shear key 2032 is made of H-beam steel, and the shear key 2032 is connected to the first steel plate 2031 by welding.

[0064] In an optional embodiment, a second steel plate 1055 may be provided at the bottom of the first groove 1053. The second steel plate 1055 has a reserved hole 10551 and a second through hole 10552. The shape and size of the reserved hole 10551 are consistent with the shape and size of the second groove 1054. The reserved hole 10551 is aligned with the second groove 1054 for installation. The number, size, and position of the second through holes 10552 are adapted to the number, size, and position of the bolt heads of the first bolt 1051 and the second bolt 1052 protruding outside the base 105. Specifically, the thickness of the second steel plate 1055 can be 8mm or 10mm.

[0065] In an optional embodiment, the mortar filling the gap and the second groove 1054 may be gravity-flow mortar.

[0066] In an optional embodiment, the arch frame 202 can be made of I-beams, with a baffle 2021 provided on the web of the arch frame 202. One end of the sound-absorbing plate 201 is located between the flange of the arch frame 202 and the baffle 2021. The baffle 2021 can be a fixed baffle or a movable baffle. When the baffle 2021 is a fixed baffle, it can be welded or bolted to the web of the arch frame 202. When the baffle 2021 is a movable baffle, it can move away from or towards the flange of the arch frame 202. If there is a dimensional error between the sound-absorbing plate 201 and the arch frame 202 during installation, it can be adjusted using the movable baffle to ensure the installation connection between the sound-absorbing plate 201 and the arch frame 202.

[0067] In an optional embodiment, rubber pads 2011 may be provided between the sound-absorbing panel 201 and the flange of the arch frame 202, as well as between the sound-absorbing panel 201 and the baffle 2021. Specifically, the rubber pad 2011 may be an EPDM rubber strip, which is arranged along the length of the arch frame 202.

[0068] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A bridge structure with a fully enclosed sound barrier, characterized in that, include: The bridge beam (1) includes a top plate member (101), a bottom plate member (102), a web member (103), and a diagonal member (104). The top plate member (101) and the bottom plate member (102) are connected by the web member (103). The two sides of the top plate member (101) are respectively connected to the two sides of the bottom plate member (102) by the diagonal member (104). A sound barrier (2) is located above the top plate component (101). The sound barrier (2) includes a sound-absorbing panel (201) and an arch frame (202). The two ends of the arch frame (202) are connected to the two sides of the top plate component (101). The sound-absorbing panel (201) is installed between two adjacent arch frames (202).

2. A bridge structure with a fully enclosed sound barrier according to claim 1, characterized in that, The arch frame (202) has arch feet (203) at both ends, and the arch feet (203) at both ends of each arch frame (202) are respectively connected to the top surface on both sides of the top plate component (101).

3. A bridge structure with a fully enclosed sound barrier according to claim 2, characterized in that, The top surfaces on both sides of the top plate component (101) are provided with bases (105), and the two arch feet (203) are respectively connected to the top surfaces on both sides of the top plate component (101) through the bases (105).

4. A bridge structure with a fully enclosed sound barrier according to claim 3, characterized in that, The base (105) is pre-embedded with a first bolt (1051) and a second bolt (1052). The bottom of the arch foot (203) is provided with a first steel plate (2031). The first bolt (1051) and the second bolt (1052) are both U-bolts. The first bolt (1051) and the second bolt (1052) are arranged longitudinally and transversely. The first steel plate (2031) is provided with a first through hole (20311). The number, size and position of the first through hole (20311) are adapted to the number, size and position of the bolt heads of the first bolt (1051) and the second bolt (1052) protruding from the base (105).

5. A bridge structure with a fully enclosed sound barrier according to claim 4, characterized in that, The base (105) has a first groove (1053) on its top, and the first steel plate (2031) is installed in the first groove (1053). There is a gap between the first steel plate (2031) and the bottom of the first groove (1053), and the gap is filled with mortar.

6. A bridge structure with a fully enclosed sound barrier according to claim 5, characterized in that, The bottom of the first groove (1053) is provided with a second groove (1054), and the bottom of the first steel plate (2031) is provided with a shear key (2032). The shear key (2032) is located in the second groove (1054), and the second groove (1054) is filled with mortar.

7. A bridge structure with a fully enclosed sound barrier according to claim 6, characterized in that, The bottom of the first groove (1053) is provided with a second steel plate (1055), and the second steel plate (1055) is provided with a reserved hole (10551) and a second through hole (10552). The shape and size of the reserved hole (10551) are consistent with the shape and size of the second groove (1054). The reserved hole (10551) is aligned with the second groove (1054) and installed. The number, size and position of the second through hole (10552) are adapted to the number, size and position of the bolt heads of the first bolt (1051) and the second bolt (1052) protruding from the base (105).

8. A bridge structure with a fully enclosed sound barrier according to claim 7, characterized in that, The mortar filling the gap and the second groove (1054) is gravity-flow mortar.

9. A bridge structure with a fully enclosed sound barrier according to any one of claims 1-8, characterized in that, The arch frame (202) is made of I-beams, and a baffle (2021) is provided on the web of the arch frame (202). One end of the sound-absorbing plate (201) is located between the flange of the arch frame (202) and the baffle (2021).

10. A bridge structure with a fully enclosed sound barrier according to claim 9, characterized in that, Rubber pads (2011) are provided between the sound-absorbing plate (201) and the flange of the arch frame (202), as well as between the sound-absorbing plate (201) and the baffle (2021).

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