Vibration reduction structure of subway track

Abstract

The utility model relates to the technical field of rail transit construction, in particular to a vibration reduction structure of a subway rail. The vibration reduction structure of the subway track is arranged below an earthen ruins and comprises a prefabricated slab, a base, fasteners and vibration isolators. Two steel rails of the subway track are mounted on the upper surfaces of the prefabricated slabs through corresponding fasteners; a groove is formed in the upper surface of the base, and the prefabricated slab is arranged in the groove through a vibration isolator, so that the prefabricated slab can suspend in the groove; the multiple vibration isolators are arranged, all the vibration isolators are evenly distributed below the two steel rails, and all the vibration isolators below each steel rail are arranged at intervals in the extending direction of the steel rails. The vibration isolators are arranged to support the prefabricated plate, so that the prefabricated plate can suspend in the groove of the base, the two steel rails of the subway track are fixedly arranged on the prefabricated plate through the fasteners, and when a train passes by, the vibration absorbers can eliminate vibration generated in the running process of the train, so that the earthen ruins above are protected.

Description

TECHNICAL FIELD

[0001] The utility model relates to rail transit construction technical field, concretely relates to a subway track's damping structure. BACKGROUND

[0002] The earth site refers to the ancient building or structural site of the natural material such as clay, clay, sand, etc., like city wall, it reflects the building technology and cultural characteristics of historical period, therefore, the protection and research of earth site have important significance.

[0003] The subway is a kind of in city operation, can realize fast mass rail transit system, usually located underground, subway system is an important part of modern city public traffic, aims at efficiently transporting a large number of passengers, links ground traffic pressure, and promotes the sustainable development of city.

[0004] The subway will pass through the earth site in the construction process, vibration will be generated in the process of subway operation, so as to cause certain influence to the protection of earth site, in view of this, the utility model provides a subway track's damping structure, aims at reducing the influence of vibration generated in the process of subway operation to earth site when subway runs under earth site. UTILITY MODEL CONTENT

[0005] The main purpose of the utility model is to provide a subway track's damping structure to reduce the influence on the protection of earth site above subway system due to vibration when subway runs.

[0006] In order to realize the above purpose, the utility model embodiment provides a subway track's damping structure, is arranged below earth site;The subway track's damping structure includes: prefabricated plate, base, fastener and vibration isolator;

[0007] Two rails of subway track are installed on the upper surface of the prefabricated plate through corresponding fastener;

[0008] The upper surface of the base is provided with a groove, the prefabricated plate is arranged in the groove through the vibration isolator, so that the prefabricated plate can be suspended in the groove;The vibration isolator is provided with multiple, all the vibration isolators are evenly distributed below two rails, and all the vibration isolators below each rail are arranged along the extension direction of the rail.

[0009] Further, the vibration isolator includes sleeve, column and steel spring;

[0010] The lower surface of the prefabricated plate is provided with a mounting groove, and the sleeve is mounted in the mounting groove;

[0011] The column is fixedly arranged in the groove, one end of the steel spring is fixedly connected with the column, and the other end is inserted into the sleeve.

[0012] Further, the vibration isolator comprises a steel spring and two sleeves;

[0013] The lower surface of the prefabricated plate is provided with a mounting groove, one of the sleeves is mounted in the mounting groove, and the other sleeve is fixedly arranged in the groove, and the two sleeves are inserted and can slide relative to each other; one end of the steel spring is fixed in one of the sleeves, and the other end is fixed in the other sleeve.

[0014] Further, a wing plate is arranged on the sleeve arranged in the mounting groove, the prefabricated plate is made of concrete, and the wing plate is cast in the prefabricated plate.

[0015] Further, the bottom wall of the groove is provided with a first drainage ditch.

[0016] Further, the lower surface of the prefabricated plate is provided with a steel cover plate, and the projection of the steel cover plate on the bottom wall of the groove can cover the first drainage ditch.

[0017] Further, the prefabricated plate is made of concrete, and the steel cover plate is cast in the prefabricated plate.

[0018] Further, the second drainage ditch is arranged on the mesa on the left and right sides of the groove.

[0019] Further, the upper surface of the prefabricated plate is provided with a boss corresponding to the steel rail, and the steel rail is mounted on the boss through the fastener.

[0020] Further, the base is made of C40 concrete.

[0021] The utility model discloses the beneficial effect:

[0022] The utility model provides a kind of vibration reduction structure of subway track, is arranged below earthen site;The vibration reduction structure of subway track includes: prefabricated plate, base, fastener and vibration isolator;Two steel rails of subway track are installed on the upper surface of the prefabricated plate by corresponding fastener;The upper surface of the base is provided with groove, and the prefabricated plate is arranged in the groove by the vibration isolator, so that the prefabricated plate can be suspended in the groove;The vibration isolator is set to multiple, and all the vibration isolators are evenly distributed below two steel rails, and all the vibration isolators below each steel rail are arranged along the extension direction of the steel rail.

[0023] By being provided with vibration isolator support prefabricated plate, make prefabricated plate be able to suspend in the groove of base, and two steel rails of subway track are fixedly arranged on prefabricated plate by fastener, when train passes, vibration isolator can eliminate vibration generated in the process of train running, to protect the earthen site above. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the specific embodiments of the present application or the prior art, the drawings required to be used in the specific embodiments or prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0025] Figure 1 The structure of the damping structure of the subway track provided by the present application is shown in the figure.

[0026] Icon: 1-steel rail;

[0027] 21-precast slab; 211-steel cover plate; 22-base; 221-groove; 222-first drain; 223-second drain; 23-fastener; 24-vibration isolator; 241-steel spring; 242-sleeve. DETAILED DESCRIPTION

[0028] The technical solutions of the present application will be described in detail below in combination with specific embodiments. Obviously, the described embodiments are some embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0029] As Figure 1 shown, the present application provides a damping structure of a subway track, which is arranged below a soil site. The damping structure of the subway track comprises a precast slab 21, a base 22, a fastener 23 and a vibration isolator 24. Two steel rails 1 of the subway track are installed on the upper surface of the precast slab 21 through the corresponding fasteners 23. The upper surface of the base 22 is provided with a groove 221, and the precast slab 21 is arranged in the groove 221 through the vibration isolator 24, so that the precast slab 21 can be suspended in the groove 221. The vibration isolators 24 are arranged in multiple numbers, and all the vibration isolators 24 are uniformly distributed below the two steel rails 1. All the vibration isolators 24 below each steel rail 1 are arranged in intervals along the extension direction of the steel rail 1.

[0030] The damping structure of the subway track provided by the present embodiment is used to support the subway track. The subway track and the damping structure of the subway track are arranged in a tunnel, and the tunnel is located below a soil site. The subway track comprises two steel rails 1 arranged in intervals. The damping structure of the subway track comprises a precast slab 21, a base 22, a fastener 23 and a vibration isolator 24. The precast slab 21 and the base 22 are both of concrete material, and the width direction thereof is the direction along which the two steel rails 1 are arranged in intervals. Figure 1The left-right direction is the direction perpendicular to the paper surface, and the length direction is the extension direction of the tunnel. The two rails 1 of the subway track are installed on the upper surface of the precast slab 21 through the fastener 23, and the fastener 23 can be anchored on the precast slab 21 to firmly fix the rail 1. The upper surface of the base 22 is provided with a groove 221, and the precast slab 21 is installed in the groove 221 through the vibration isolator 24. Specifically, the two ends of the vibration isolator 24 are connected with the lower surface of the precast slab 21 and the bottom wall of the groove 221 respectively. Under the action of the vibration isolator 24, the periphery of the precast slab 21 is spaced apart from the inner wall of the groove 221, so that the precast slab 21 can be suspended in the groove 221. The vibration isolator 24 is provided with a plurality of vibration isolators 24, and the vibration isolator 24 is evenly divided into two parts. Each part of the vibration isolator 24 corresponds to one rail 1 of the subway track. The vibration isolator 24 is located below the rail 1, and all the vibration isolators 24 are sequentially and spaced apart along the extension direction of the rail 1.

[0031] The vibration reduction structure of the subway track provided in the embodiment can support the precast slab 21 through the vibration isolator 24, so that the precast slab 21 can be suspended in the groove 221 of the base 22. The two rails 1 of the subway track are fixed on the precast slab 21 through the fastener 23. When the train passes, the vibration isolator can eliminate the vibration generated in the train running process, thereby protecting the above-mentioned earth site.

[0032] The vibration reduction structure of the subway track provided in the embodiment, as shown in Figure 1 The vibration isolator 24 includes a sleeve 242, a column and a steel spring 241. The precast slab 21 is provided with a mounting groove in the lower surface, and the sleeve 242 is installed in the mounting groove. The column is fixedly arranged in the groove 221, and one end of the steel spring 241 is fixedly connected with the column and the other end is inserted into the sleeve 242.

[0033] In the embodiment, the vibration isolator 24 includes a sleeve 242, a column and a steel spring 241. The lower surface of the precast slab 21 is provided with a mounting groove. Optionally, the mounting groove can correspond to one vibration isolator 24, or a groove extending along the length direction of the precast slab 21 can be provided in the lower surface of the precast slab 21 as the mounting groove, so as to accommodate all the vibration isolators 24 corresponding to the rail 1. The sleeve 242 of the vibration isolator 24 is fixedly arranged in the mounting groove, the column can be anchored on the bottom wall of the groove 221, one end of the sleeve 242 is open, and the open end of the sleeve 242 faces the column. One end of the steel spring 241 is fixedly connected with the column, and the other end is located in the sleeve 242 and fixedly connected with the sleeve 242. By arranging the mounting groove to accommodate the sleeve 242, the spacing between the precast slab 21 and the bottom wall of the groove 221 can be avoided to be too large, so as to ensure the stability of the precast slab 21 and the train passing through the precast slab 21 while providing the vibration reduction effect.

[0034] Optionally, in the embodiment, the outer surface of the sleeve 242 can be provided with a wing plate, the prefabricated slab 21 is made of concrete, and the sleeve 242 can be poured into the prefabricated slab 21 through the wing plate when the prefabricated slab 21 is poured, thereby improving the stability and connection strength of the sleeve 242.

[0035] The utility model discloses an embodiment provides a damping structure of subway track, as shown in Figure 1 The damping structure of subway track of the utility model discloses a vibration isolator 24, including steel spring 241 and two sleeves 242, the lower surface of prefabricated slab 21 is provided with mounting groove, one of sleeve 242 is installed in mounting groove, and the other sleeve 242 is fixed in recess 221, and two sleeves 242 are inserted and can slide relative, and one end of steel spring 241 is fixed in one of sleeve 242, and the other end is fixed in the other sleeve 242.

[0036] In another embodiment of the vibration isolator 24, the vibration isolator 24 includes a steel spring 241 and two sleeves 242; one of the sleeves 242 is fixed in the mounting groove of the lower surface of the prefabricated slab 21, and the other sleeve 242 is anchored to the bottom wall of the recess 221; both sleeves 242 are open at one end, and the outer diameter of one of the sleeves 242 is less than or equal to the inner diameter of the other sleeve 242, so that both sleeves 242 can be inserted and can slide relative to each other; one end of the steel spring 241 is fixed in one of the sleeves 242, and the other end is fixed in the other sleeve 242; the vibration isolator 24 uses two sleeves 242 in cooperation with the steel spring 241, which can protect the steel spring 241 in the space formed by the two sleeves 242, and has a certain protective effect on the steel spring 241. Moreover, by setting the mounting groove to accommodate the sleeve 242, the distance between the prefabricated slab 21 and the bottom wall of the recess 221 can be avoided, which provides damping effect while ensuring the stability of the prefabricated slab 21 and the train running on the prefabricated slab 21.

[0037] The utility model discloses an embodiment provides a damping structure of subway track, as shown in Figure 1 The sleeve 242 provided in the mounting groove is provided with a wing plate, the prefabricated slab 21 is made of concrete, and the wing plate is poured into the prefabricated slab 21.

[0038] In the embodiment, the outer surface of the sleeve 242 located in the mounting groove can be provided with a wing plate, the prefabricated slab 21 is made of concrete, and the sleeve 242 can be poured into the prefabricated slab 21 through the wing plate when the prefabricated slab 21 is poured, thereby improving the stability and connection strength of the sleeve 242.

[0039] It can be understood that in the embodiment, the vibration isolator 24 described above can also adopt a hydraulic vibration isolation assembly, which is a device that uses the principle of fluid dynamics to absorb and attenuate vibration energy, and can also achieve the purpose of eliminating the influence of vibration generated during train running on the earth site in the embodiment.

[0040] The subway track vibration reduction structure provided in the embodiment of the utility model, as shown in Figure 1 The bottom wall of the groove 221 is provided with a first drainage ditch 222.

[0041] Optionally, in the embodiment, the bottom wall of the groove 221 is provided with a first drainage ditch 222 to drain the accumulated water in the groove 221, protect the base 22, prevent the base 22 from softening or being eroded, maintain its carrying capacity, avoid track settlement or deformation due to changes in the strength of the base 22, and ensure the safety and comfort during train running. Moreover, in cold regions, frost heaving caused by frozen accumulated water can also be eliminated. By providing the first drainage ditch 222, a solid guarantee for the long-term stable operation of the subway system can be provided.

[0042] Optionally, in the embodiment, the part of the bottom wall of the groove 221 located on both sides of the first drainage ditch 222 is inclinedly arranged towards the first drainage ditch 222, so that the water in the groove 221 can flow into the first drainage ditch 222; further, the inner surface of the first drainage ditch 222 can be first coated with waterproof concrete, and then covered with a layer of polyurethane waterproof material, to prevent water in the first drainage ditch 222 from seeping into the base 22.

[0043] The subway track vibration reduction structure provided in the embodiment of the utility model, as shown in Figure 1 The lower surface of the prefabricated slab 21 is provided with a steel cover plate 211, and the projection of the steel cover plate 211 towards the bottom wall of the groove 221 can cover the first drainage ditch 222.

[0044] Preferably, in the embodiment, the lower surface of the prefabricated slab 21 is also provided with a steel cover plate 211, and the projection of the steel cover plate 211 towards the bottom wall of the groove 221 can cover the first drainage ditch 222, thereby playing a certain protective role on the first drainage ditch 222.

[0045] The subway track vibration reduction structure provided in the embodiment of the utility model, as shown in Figure 1 The prefabricated slab 21 is made of concrete, and the steel cover plate 211 is cast in the prefabricated slab 21.

[0046] The prefabricated slab 21 is made of concrete, and the steel cover plate 211 is cast in the prefabricated slab 21.

[0047] The subway track vibration reduction structure provided in the embodiment of the utility model, as shown inFigure 1 As shown, the second drainage ditch 223 is arranged on the mesa on the left and right sides of the groove 221 of the base 22.

[0048] In the embodiment, two second drainage ditches 223 are arranged on the mesa on the left and right sides of the groove 221 of the base 22, which can protect the base 22, prevent the base 22 from softening or being eroded, maintain the bearing capacity of the base 22, avoid track settlement or deformation caused by the change of the strength of the base 22, and ensure the safety and comfort of the train during running. In addition, in cold regions, it can also eliminate the frost heaving caused by the freezing of accumulated water. By arranging the second drainage ditch 223, it can provide a solid guarantee for the long-term stable operation of the subway system.

[0049] The utility model embodiment provides a subway track damping structure, the upper surface of prefabricated slab 21 is equipped with the boss corresponding with steel rail 1, steel rail 1 is installed on the boss through fastener 23.

[0050] In the embodiment, the upper surface of the prefabricated slab 21 is provided with two bosses, and the steel rail 1 is installed on the corresponding boss through the corresponding fastener 23. The boss can provide more stable foundation support for the steel rail 1, and ensure that the steel rail 1 is not prone to transverse or longitudinal displacement under the action of train load. This helps to maintain the geometric accuracy of the track and ensure the safety and stability of train running. At the same time, by fixing the steel rail 1 on the boss, the pressure transmitted to the base 22 during train operation can be effectively dispersed, reducing the risk of local deformation and settlement of the base 22 material. The design of the boss usually forms a certain slope on both sides of the track, which helps to guide the flow of rainwater and other water to the drainage ditch on both sides, avoiding the accumulation of water under the steel rail 1, thereby protecting the base 22 structure from water erosion. The boss makes the installation position of the steel rail 1 more accurate and controllable, and during the laying process, the height, level and direction of the steel rail 1 can be adjusted slightly by adjusting the gasket and other methods to ensure that the track geometric parameters meet the design requirements. When the steel rail 1 needs to be replaced or repaired, the boss structure provides a clear operating space, facilitating the inspection and work of the technicians, and improving the maintenance efficiency. Optionally, the boss can also integrate elastic elements (such as rubber pads, springs, etc.), which can absorb part of the vibration energy when the train passes, play a good vibration isolation role, and reduce the impact on the earth site.

[0051] Preferably, in the embodiment, the material of the base 22 is C40 concrete, which means that the standard value of the compressive strength of the concrete cube is 40 N / mm 2 , which has high strength and long service life.

[0052] In the description of the utility model, it is necessary to explain, the direction or position relation that the term "upper", "lower" and the like indicate is based on the direction or position relation shown in the drawing, is only for the convenience of describing the utility model and simplifying the description, and is not indicate or imply that the device or element indicated must have a particular orientation, construct and operate in a particular orientation, therefore can not be understood as the limitation of the utility model. In addition, the term "first", "second" is only for the purpose of description, and can not be understood as indicating or implying relative importance.

[0053] In the description of the utility model, it is necessary to explain, unless another explicit provision and limitation, the term "installation", "communication", "connection" should be broad understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, also can be electrical connection;Can be direct communication, also can be indirectly communicated through the intermediate medium, can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific circumstances. In addition, in the description of the utility model, unless otherwise stated, the meaning of "multiple" is two or more than two.

[0054] The above is only the preferred embodiment of the utility model, and is not used to limit the utility model, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A vibration damping structure of a subway track arranged below a soil site; characterized by, The damping structure of the subway track comprises a prefabricated plate (21), a base (22), a fastener (23) and a vibration isolator (24); Two steel rails (1) of the subway track are installed on the upper surface of the prefabricated plate (21) through the corresponding fasteners (23); The upper surface of the base (22) is provided with a groove (221), and the prefabricated plate (21) is arranged in the groove (221) through the vibration isolator (24), so that the prefabricated plate (21) can be suspended in the groove (221); a plurality of vibration isolators (24) are arranged, and all the vibration isolators (24) are uniformly distributed below the two steel rails (1), and all the vibration isolators (24) below each steel rail (1) are arranged in the extension direction of the steel rail (1).

2. The damping structure of a subway track according to claim 1, wherein The vibration isolator (24) comprises a sleeve (242), a column and a steel spring (241); The lower surface of the prefabricated plate (21) is provided with a mounting groove, and the sleeve (242) is mounted in the mounting groove; The column is fixedly arranged in the groove (221), and one end of the steel spring (241) is fixedly connected with the column, and the other end is inserted into the sleeve (242).

3. The damping structure of a subway track according to claim 1, wherein The vibration isolator (24) comprises a steel spring (241) and two sleeves (242); The lower surface of the prefabricated plate (21) is provided with a mounting groove, one of the sleeves (242) is mounted in the mounting groove, and the other sleeve (242) is fixedly arranged in the groove (221), and the two sleeves (242) are inserted and can slide relative to each other; one end of the steel spring (241) is fixedly arranged in one of the sleeves (242), and the other end is fixedly arranged in the other sleeve (242).

4. The damping structure of a subway track according to claim 3, wherein The sleeve (242) arranged in the mounting groove is provided with a wing plate, the prefabricated plate (21) is made of concrete material, and the wing plate is cast in the prefabricated plate (21).

5. The damping structure for a subway track according to claim 1, wherein The bottom wall of the groove (221) is provided with a first drainage ditch (222).

6. The damping structure of a subway track according to claim 5, wherein The lower surface of the prefabricated plate (21) is provided with a steel cover plate (211), and the projection of the steel cover plate (211) to the bottom wall of the groove (221) can cover the first drainage ditch (222).

7. The damping structure of a subway track according to claim 6, wherein The prefabricated plate (21) is made of concrete material, and the steel cover plate (211) is cast in the prefabricated plate (21).

8. The damping structure of a subway track according to claim 1, wherein The base (22) is arranged on the mesa on the left and right sides of the groove (221) and is provided with a second drainage ditch (223).

9. The damping structure of a subway track according to claim 1, wherein The upper surface of the prefabricated plate (21) is provided with a boss corresponding to the steel rail (1), and the steel rail (1) is installed on the boss through the fastener (23).

10. The damping structure of a subway track according to claim 1, wherein The base (22) is made of C40 concrete material.

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